/* roulang page: index */
:root {
            --bg: #08090f;
            --bg-soft: #0d111e;
            --panel: #111827;
            --panel-light: #151e31;
            --line: rgba(0, 240, 255, .16);
            --line-strong: rgba(0, 82, 255, .55);
            --blue: #2266ff;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --text: #f8fafc;
            --muted: #aab6ca;
            --dim: #71809b;
            --radius: 20px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --container: 1180px;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            background:
                radial-gradient(circle at 82% 7%, rgba(0, 240, 255, .07), transparent 27rem),
                radial-gradient(circle at 12% 42%, rgba(34, 102, 255, .08), transparent 30rem),
                var(--bg);
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .22;
            background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
            background-size: 46px 46px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        :focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; }
        .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
        .eyebrow {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .17em;
            text-transform: uppercase;
        }
        .section { padding: 104px 0; position: relative; }
        .section-heading { max-width: 700px; margin-bottom: 44px; }
        .section-heading h2 {
            color: var(--text);
            font-size: clamp(1.9rem, 3.3vw, 3.1rem);
            line-height: 1.12;
            letter-spacing: -.04em;
            margin-top: 11px;
        }
        .section-heading p { color: var(--muted); margin-top: 17px; max-width: 640px; }
        .section-heading.split { display: flex; justify-content: space-between; align-items: end; gap: 28px; max-width: none; }
        .section-heading.split p { margin: 0; max-width: 430px; }

        .site-header {
            position: fixed;
            z-index: 40;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, .83);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, .12);
        }
        .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 34px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            width: 34px; height: 34px; display: grid; place-items: center;
            color: var(--bg); background: var(--lime); font-weight: 950;
            clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
        }
        .brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
        .brand-copy strong { font-size: .92rem; letter-spacing: .04em; }
        .brand-copy span { color: var(--cyan); font-size: .67rem; margin-top: 4px; letter-spacing: .08em; text-transform: uppercase; }
        .desktop-nav { display: flex; align-items: center; gap: 5px; flex: 1; }
        .nav-link {
            color: var(--muted); padding: 9px 13px; border-radius: 9px; font-size: .88rem;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }
        .nav-link:hover { color: var(--text); background: rgba(0, 240, 255, .08); transform: translateY(-1px); }
        .nav-link.active { color: var(--cyan); background: rgba(0, 240, 255, .1); }
        .nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
        .login-link { color: var(--muted); font-size: .87rem; padding: 9px 8px; transition: color .2s; }
        .login-link:hover { color: var(--cyan); }
        .nav-cta, .btn-primary {
            color: #03101a; background: var(--cyan); font-weight: 850; border: 1px solid var(--cyan);
            padding: 11px 17px; clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: transform .2s, box-shadow .2s, background .2s;
        }
        .nav-cta:hover, .btn-primary:hover { background: var(--lime); box-shadow: 0 0 26px rgba(0, 240, 255, .28); transform: translateY(-2px); }
        .menu-toggle {
            display: none; color: var(--cyan); background: transparent; border: 1px solid var(--line);
            width: 42px; height: 42px; border-radius: 10px; font-size: 1.3rem;
        }
        .mobile-panel { display: none; }

        .hero {
            min-height: 720px;
            padding: 160px 0 72px;
            background-image: linear-gradient(90deg, rgba(8,9,15,.98) 0%, rgba(8,9,15,.77) 43%, rgba(8,9,15,.32) 100%), url('/assets/images/backpic/back-1.jpg');
            background-position: center;
            background-size: cover;
            border-bottom: 1px solid var(--line);
            display: flex;
            align-items: center;
        }
        .hero::after {
            content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 150px;
            background: linear-gradient(transparent, var(--bg)); pointer-events: none;
        }
        .hero-content { position: relative; z-index: 1; }
        .hero-copy { max-width: 820px; }
        .hero h1 {
            font-size: clamp(2.5rem, 5.8vw, 5.65rem);
            line-height: .99; letter-spacing: -.065em; max-width: 820px; margin: 15px 0 24px;
        }
        .hero h1 span { color: var(--cyan); }
        .hero-intro { color: #d8e1ef; font-size: clamp(1rem, 1.5vw, 1.2rem); max-width: 680px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 31px; }
        .btn-secondary {
            border: 1px solid rgba(0, 240, 255, .42); background: rgba(8, 9, 15, .54); color: var(--text);
            padding: 11px 17px; clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: border .2s, color .2s, background .2s, transform .2s;
        }
        .btn-secondary:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(0, 240, 255, .1); transform: translateY(-2px); }
        .hero-facts { display: flex; flex-wrap: wrap; gap: 25px; margin-top: 43px; }
        .fact { border-left: 2px solid var(--lime); padding-left: 12px; }
        .fact strong { display: block; color: var(--text); font-size: 1.2rem; }
        .fact span { color: var(--muted); font-size: .78rem; }

        .broadcast-bar {
            margin-top: 62px; position: relative; z-index: 2; max-width: 1040px;
            display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 0;
            background: rgba(13,17,30,.86); border: 1px solid var(--line-strong);
            box-shadow: var(--shadow); backdrop-filter: blur(12px);
        }
        .broadcast-cell { padding: 22px 24px; border-right: 1px solid var(--line); }
        .broadcast-cell:last-child { border-right: 0; }
        .broadcast-cell h3 { font-size: 1rem; margin: 4px 0 4px; }
        .broadcast-cell p { color: var(--muted); font-size: .82rem; }
        .live-dot { display: inline-flex; align-items: center; gap: 7px; color: var(--lime); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
        .live-dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px var(--lime); animation: pulse 1.5s infinite; }
        .countdown { display: flex; gap: 14px; margin-top: 5px; }
        .countdown b { font-size: 1.5rem; color: var(--cyan); line-height: 1; }
        .countdown small { color: var(--dim); font-size: .65rem; display: block; }
        .reminder-form { display: flex; gap: 8px; margin-top: 8px; }
        .reminder-form input {
            min-width: 0; width: 100%; color: var(--text); background: rgba(255,255,255,.06);
            border: 1px solid var(--line); padding: 9px 11px; outline: none;
        }
        .reminder-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.1); }
        .mini-submit { background: var(--lime); border: 0; color: #10150a; padding: 8px 12px; font-weight: 800; white-space: nowrap; }
        .form-status { color: var(--lime); font-size: .7rem; margin-top: 6px; min-height: 17px; }

        .news-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); gap: 38px; align-items: start; }
        .news-list { border-top: 1px solid var(--line); }
        .news-item { display: grid; grid-template-columns: 105px 1fr auto; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: center; }
        .news-date { color: var(--cyan); font-size: .75rem; font-weight: 800; }
        .news-item h3 { font-size: 1.02rem; line-height: 1.3; margin-bottom: 4px; }
        .news-item h3 a:hover { color: var(--cyan); }
        .news-item p { color: var(--muted); font-size: .82rem; }
        .news-tag { color: var(--dim); font-size: .7rem; border: 1px solid var(--line); padding: 4px 8px; white-space: nowrap; }
        .featured {
            min-height: 355px; position: relative; overflow: hidden; padding: 27px;
            display: flex; flex-direction: column; justify-content: end; border: 1px solid var(--line-strong);
            background: linear-gradient(0deg, rgba(8,9,15,.98), rgba(8,9,15,.1)), url('/assets/images/coverpic/cover-1.jpg') center/cover;
        }
        .featured:hover { border-color: var(--cyan); }
        .featured h3 { font-size: 1.5rem; line-height: 1.15; margin: 10px 0; }
        .featured p { color: #c8d2e2; font-size: .86rem; }
        .text-link { display: inline-flex; color: var(--cyan); font-size: .82rem; font-weight: 800; margin-top: 18px; }
        .text-link:hover { color: var(--lime); }

        .definition-layout { display: grid; grid-template-columns: .84fr 1.16fr; gap: 58px; align-items: center; }
        .definition-image { position: relative; min-height: 430px; }
        .definition-image img { width: 100%; height: 430px; object-fit: cover; border: 1px solid var(--line-strong); filter: saturate(.82); }
        .image-note {
            position: absolute; left: 20px; bottom: 20px; right: 20px; padding: 16px;
            background: rgba(8,9,15,.87); border-left: 3px solid var(--lime); font-size: .82rem; color: #dae3f2;
        }
        .definition-copy h2 { font-size: clamp(1.9rem, 3vw, 2.8rem); line-height: 1.1; letter-spacing: -.04em; margin: 9px 0 17px; }
        .definition-copy > p { color: var(--muted); }
        .term-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; margin-top: 27px; }
        .term { padding: 17px 18px; background: rgba(17,24,39,.7); border: 1px solid var(--line); }
        .term strong { display: block; color: var(--cyan); font-size: 1.12rem; margin-bottom: 3px; }
        .term span { color: var(--muted); font-size: .8rem; }

        .steps-section { background: var(--bg-soft); border-top: 1px solid rgba(0,240,255,.08); border-bottom: 1px solid rgba(0,240,255,.08); }
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; position: relative; }
        .steps::before { content: ""; position: absolute; left: 10%; right: 10%; top: 29px; height: 1px; background: var(--line-strong); }
        .step { position: relative; padding: 0 32px 0 0; }
        .step-number { width: 58px; height: 58px; display: grid; place-items: center; position: relative; z-index: 1; color: var(--bg); background: var(--cyan); font-weight: 950; clip-path: polygon(12px 0, 100% 0, calc(100% - 12px) 100%, 0 100%); }
        .step h3 { font-size: 1.12rem; margin: 22px 0 7px; }
        .step p { color: var(--muted); font-size: .88rem; max-width: 280px; }

        .comparison-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
        .comparison-intro h2 { font-size: clamp(1.9rem, 3vw, 2.7rem); line-height: 1.1; letter-spacing: -.04em; margin: 10px 0 15px; }
        .comparison-intro p { color: var(--muted); }
        .formula {
            margin-top: 26px; padding: 20px; background: rgba(34,102,255,.1);
            border-left: 3px solid var(--blue); color: #dfeaff;
        }
        .formula b { color: var(--lime); }
        .result-board { border: 1px solid var(--line); background: rgba(13,17,30,.62); }
        .result-row { display: grid; grid-template-columns: 1.25fr .8fr .9fr; border-bottom: 1px solid var(--line); }
        .result-row:last-child { border-bottom: 0; }
        .result-row > div { padding: 17px 19px; border-right: 1px solid var(--line); }
        .result-row > div:last-child { border-right: 0; }
        .result-head { color: var(--cyan); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; background: rgba(0,240,255,.06); }
        .result-row:not(.result-head) { color: var(--muted); font-size: .86rem; }
        .result-row:not(.result-head) strong { color: var(--text); display: block; }
        .profit { color: var(--lime) !important; font-weight: 800; }
        .loss { color: #ff7b8d !important; font-weight: 800; }

        .app-section { background: linear-gradient(110deg, #0d111e 15%, #0b172c 100%); overflow: hidden; }
        .app-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
        .app-copy h2 { font-size: clamp(1.9rem, 3.3vw, 3rem); line-height: 1.1; letter-spacing: -.045em; margin: 10px 0 17px; }
        .app-copy p { color: var(--muted); max-width: 590px; }
        .app-points { display: grid; gap: 13px; margin: 25px 0; }
        .app-point { display: flex; gap: 12px; align-items: flex-start; color: #d7e1ef; font-size: .9rem; }
        .app-point i { color: var(--lime); font-style: normal; font-weight: 900; }
        .screen-stage { min-height: 430px; position: relative; display: grid; place-items: center; }
        .screen-stage::before { content: ""; position: absolute; width: 360px; height: 360px; border: 1px solid rgba(0,240,255,.22); border-radius: 50%; box-shadow: 0 0 90px rgba(0,240,255,.1); }
        .screen {
            position: relative; z-index: 1; width: min(100%, 450px); padding: 17px;
            background: #09101e; border: 1px solid var(--cyan); box-shadow: 0 0 45px rgba(0,240,255,.16);
            transform: rotate(2deg);
        }
        .screen-top { display: flex; justify-content: space-between; color: var(--muted); font-size: .72rem; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
        .screen-title { font-size: 1.25rem; color: var(--text); margin: 20px 0 14px; }
        .screen-line { display: flex; justify-content: space-between; align-items: center; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: .82rem; }
        .screen-line span { color: var(--muted); }
        .screen-line b { color: var(--cyan); }
        .screen-pill { color: var(--bg); background: var(--lime); padding: 4px 8px; font-weight: 900; font-size: .68rem; }

        .faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; align-items: start; }
        .faq-lead h2 { font-size: clamp(1.9rem, 3.2vw, 3rem); line-height: 1.08; letter-spacing: -.045em; margin: 10px 0 16px; }
        .faq-lead p { color: var(--muted); }
        .faq-list { border-top: 1px solid var(--line); }
        details { border-bottom: 1px solid var(--line); padding: 19px 0; }
        summary { list-style: none; cursor: pointer; padding-right: 28px; position: relative; font-weight: 750; }
        summary::-webkit-details-marker { display: none; }
        summary::after { content: "+"; position: absolute; right: 0; top: -4px; color: var(--cyan); font-size: 1.4rem; font-weight: 400; }
        details[open] summary::after { content: "−"; color: var(--lime); }
        details p { color: var(--muted); font-size: .9rem; margin-top: 12px; padding-right: 24px; }

        .about-section { padding-top: 75px; }
        .about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 45px; align-items: start; }
        .about-layout h2 { font-size: 2rem; line-height: 1.12; letter-spacing: -.04em; margin: 9px 0 15px; }
        .about-layout p { color: var(--muted); }
        .trust-list { display: grid; gap: 12px; }
        .trust-item { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
        .trust-icon { color: var(--lime); font-size: 1.2rem; }
        .trust-item strong { display: block; font-size: .94rem; }
        .trust-item span { color: var(--muted); font-size: .8rem; }

        .final-cta { margin-top: 80px; padding: 48px; background: linear-gradient(110deg, rgba(0,82,255,.27), rgba(0,240,255,.08)); border: 1px solid var(--line-strong); display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .final-cta h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.12; letter-spacing: -.04em; }
        .final-cta p { color: var(--muted); margin-top: 8px; max-width: 650px; }

        footer { padding: 54px 0 28px; border-top: 1px solid var(--line); background: #07080d; }
        .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 45px; padding-bottom: 40px; }
        .footer-copy { color: var(--muted); max-width: 380px; font-size: .86rem; margin-top: 17px; }
        .footer-col h3 { font-size: .8rem; color: var(--cyan); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 14px; }
        .footer-col a { display: block; color: var(--muted); font-size: .84rem; margin: 9px 0; transition: color .2s; }
        .footer-col a:hover { color: var(--lime); }
        .footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; justify-content: space-between; gap: 20px; color: var(--dim); font-size: .75rem; }
        .responsible { color: var(--lime); }

        .fab {
            position: fixed; left: 16px; bottom: 96px; z-index: 50; min-width: 56px; height: 56px; padding: 0 16px;
            display: flex; align-items: center; justify-content: center; gap: 7px; color: var(--cyan);
            background: rgba(0,0,0,.72); border: 1px solid transparent; border-radius: 14px;
            background-image: linear-gradient(rgba(0,0,0,.86), rgba(0,0,0,.86)), linear-gradient(135deg, var(--lime), var(--cyan), var(--blue));
            background-origin: border-box; background-clip: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0,240,255,.38); opacity: .72; transition: opacity .25s, transform .25s, box-shadow .25s;
            backdrop-filter: blur(10px);
        }
        .fab:hover { opacity: 1; transform: scale(1.08); box-shadow: 0 0 34px rgba(0,240,255,.72); }
        .fab-icon { font-size: 1.35rem; animation: flicker 3s infinite; }
        .fab-label { font-size: .72rem; font-weight: 800; }
        .fab-notice { position: absolute; right: -3px; top: -4px; width: 9px; height: 9px; border-radius: 50%; background: #ff4160; box-shadow: 0 0 10px #ff4160; animation: pulse 1.4s infinite; }

        @keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .4; transform: scale(.75); } }
        @keyframes flicker { 0%, 92%, 100% { opacity: 1; } 94% { opacity: .3; } 96% { opacity: 1; } }
        @media (max-width: 1024px) {
            .nav-wrap { gap: 18px; }
            .desktop-nav { gap: 0; }
            .nav-link { padding-inline: 9px; font-size: .82rem; }
            .broadcast-bar { grid-template-columns: 1fr 1fr; }
            .broadcast-cell:last-child { grid-column: 1 / -1; border-top: 1px solid var(--line); }
            .definition-layout, .comparison-layout, .faq-layout { gap: 35px; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 34px)); }
            .section { padding: 75px 0; }
            .nav-wrap { min-height: 68px; }
            .desktop-nav { display: none; }
            .menu-toggle { display: block; margin-left: auto; }
            .nav-actions { margin-left: 0; gap: 5px; }
            .login-link { font-size: .78rem; }
            .nav-cta { padding: 9px 11px; font-size: .78rem; }
            .mobile-panel { padding: 10px 0 18px; border-top: 1px solid var(--line); }
            .mobile-panel.open { display: grid; gap: 5px; }
            .mobile-panel .nav-link { padding: 11px 4px; border-bottom: 1px solid rgba(255,255,255,.06); }
            .hero { min-height: auto; padding: 135px 0 55px; }
            .hero h1 { font-size: clamp(2.45rem, 11vw, 4rem); }
            .hero-facts { gap: 15px; }
            .broadcast-bar { margin-top: 45px; grid-template-columns: 1fr; }
            .broadcast-cell, .broadcast-cell:last-child { grid-column: auto; border-right: 0; border-top: 1px solid var(--line); }
            .broadcast-cell:first-child { border-top: 0; }
            .news-layout, .definition-layout, .comparison-layout, .app-layout, .faq-layout, .about-layout { grid-template-columns: 1fr; }
            .featured { min-height: 290px; }
            .definition-image, .definition-image img { min-height: 340px; height: 340px; }
            .steps { grid-template-columns: 1fr; gap: 33px; }
            .steps::before { left: 28px; right: auto; top: 29px; bottom: 29px; width: 1px; height: auto; }
            .step { padding-right: 0; display: grid; grid-template-columns: 58px 1fr; column-gap: 18px; }
            .step h3 { margin: 0 0 5px; align-self: end; }
            .step p { grid-column: 2; }
            .step-number { grid-row: span 2; }
            .screen-stage { min-height: 380px; }
            .final-cta { margin-top: 55px; padding: 30px 24px; display: block; }
            .final-cta .btn-primary { display: inline-block; margin-top: 22px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
            .footer-grid > div:first-child { grid-column: 1 / -1; }
            .footer-bottom { display: block; }
            .footer-bottom span { display: block; margin-top: 7px; }
        }
        @media (max-width: 520px) {
            .brand-copy strong { font-size: .8rem; }
            .brand-copy span { font-size: .57rem; }
            .brand-mark { width: 29px; height: 29px; font-size: .75rem; }
            .nav-actions { gap: 1px; }
            .login-link { padding-inline: 4px; }
            .nav-cta { padding: 8px 9px; }
            .hero-actions { display: grid; }
            .hero-actions a { text-align: center; }
            .hero-facts { display: grid; grid-template-columns: 1fr 1fr; }
            .fact:last-child { grid-column: 1 / -1; }
            .section-heading.split { display: block; }
            .section-heading.split p { margin-top: 15px; }
            .news-item { grid-template-columns: 1fr; gap: 6px; }
            .news-tag { justify-self: start; }
            .term-grid { grid-template-columns: 1fr; }
            .result-board { overflow-x: auto; }
            .result-row { min-width: 570px; }
            .reminder-form { display: grid; grid-template-columns: 1fr auto; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-grid > div:first-child { grid-column: auto; }
            .fab { left: 14px; bottom: 78px; }
            .fab-label { display: none; }
        }

/* roulang page: article */
:root {
            --bg: #08090f;
            --bg-soft: #0d111e;
            --panel: #111827;
            --panel-light: #151e31;
            --panel-deep: #0b101b;
            --line: rgba(0, 240, 255, .16);
            --line-strong: rgba(0, 82, 255, .55);
            --blue: #2266ff;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --text: #f8fafc;
            --muted: #aab6ca;
            --dim: #71809b;
            --danger: #ff5577;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --container: 1180px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background:
                radial-gradient(circle at 82% 7%, rgba(0, 240, 255, .07), transparent 27rem),
                radial-gradient(circle at 12% 42%, rgba(34, 102, 255, .08), transparent 30rem),
                var(--bg);
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .22;
            background-image:
                linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
            background-size: 46px 46px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
            z-index: -1;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input {
            font: inherit;
        }

        button {
            cursor: pointer;
        }

        img {
            display: block;
            max-width: 100%;
        }

        .container {
            width: min(var(--container), calc(100% - 48px));
            margin-inline: auto;
        }

        .eyebrow {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .17em;
            text-transform: uppercase;
        }

        .section {
            position: relative;
            padding: 104px 0;
        }

        .section-heading {
            max-width: 700px;
            margin-bottom: 44px;
        }

        .section-heading h2 {
            margin: 11px 0 0;
            color: var(--text);
            font-size: clamp(1.9rem, 3.3vw, 3.1rem);
            line-height: 1.12;
            letter-spacing: -.04em;
        }

        .section-heading p {
            max-width: 640px;
            margin: 17px 0 0;
            color: var(--muted);
        }

        .section-heading.split {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 28px;
            max-width: none;
        }

        .section-heading.split p {
            max-width: 430px;
            margin: 0;
        }

        .site-header {
            position: fixed;
            z-index: 40;
            top: 0;
            right: 0;
            left: 0;
            background: rgba(8, 9, 15, .83);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, .12);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 34px;
            min-height: 76px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: max-content;
        }

        .brand-mark {
            display: grid;
            place-items: center;
            width: 34px;
            height: 34px;
            color: var(--bg);
            background: var(--lime);
            font-weight: 950;
            clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
        }

        .brand-copy {
            display: flex;
            flex-direction: column;
            line-height: 1.1;
        }

        .brand-copy strong {
            font-size: .92rem;
            letter-spacing: .04em;
        }

        .brand-copy span {
            margin-top: 4px;
            color: var(--cyan);
            font-size: .67rem;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .desktop-nav {
            display: flex;
            flex: 1;
            align-items: center;
            gap: 5px;
        }

        .nav-link {
            padding: 9px 13px;
            border-radius: 9px;
            color: var(--muted);
            font-size: .88rem;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }

        .nav-link:hover {
            color: var(--text);
            background: rgba(0, 240, 255, .08);
            transform: translateY(-1px);
        }

        .nav-link.active {
            color: var(--cyan);
            background: rgba(0, 240, 255, .1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }

        .login-link {
            color: var(--muted);
            font-size: .86rem;
            transition: color .2s ease;
        }

        .login-link:hover {
            color: var(--cyan);
        }

        .nav-cta,
        .btn-primary {
            padding: 11px 17px;
            border: 1px solid var(--cyan);
            color: #03101a;
            background: var(--cyan);
            font-weight: 850;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: transform .2s, box-shadow .2s, background .2s;
        }

        .nav-cta:hover,
        .btn-primary:hover {
            background: var(--lime);
            box-shadow: 0 0 26px rgba(0, 240, 255, .28);
            transform: translateY(-2px);
        }

        .btn-primary:active,
        .nav-cta:active,
        .btn-secondary:active {
            transform: translateY(1px);
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--cyan);
            background: transparent;
            font-size: 1.3rem;
        }

        .mobile-panel {
            display: none;
        }

        .article-hero {
            position: relative;
            min-height: 590px;
            padding: 150px 0 74px;
            background-image:
                linear-gradient(90deg, rgba(8, 9, 15, .98) 0%, rgba(8, 9, 15, .86) 43%, rgba(8, 9, 15, .46) 100%),
                url('/assets/images/backpic/back-2.jpg');
            background-position: center;
            background-size: cover;
            border-bottom: 1px solid var(--line);
        }

        .article-hero::after {
            content: "";
            position: absolute;
            right: 0;
            bottom: 0;
            left: 0;
            height: 150px;
            pointer-events: none;
            background: linear-gradient(transparent, var(--bg));
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(300px, .72fr);
            align-items: center;
            gap: 68px;
        }

        .hero-copy {
            max-width: 760px;
        }

        .hero-copy h1 {
            max-width: 790px;
            margin: 16px 0 22px;
            color: var(--text);
            font-size: clamp(2.35rem, 5vw, 5rem);
            line-height: 1.02;
            letter-spacing: -.065em;
        }

        .hero-copy h1 em {
            color: var(--cyan);
            font-style: normal;
        }

        .hero-intro {
            max-width: 680px;
            color: #d8e1ef;
            font-size: clamp(1rem, 1.5vw, 1.18rem);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 13px;
            margin-top: 29px;
        }

        .btn-secondary {
            padding: 11px 17px;
            border: 1px solid rgba(0, 240, 255, .42);
            color: var(--text);
            background: rgba(8, 9, 15, .54);
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: border .2s, color .2s, background .2s, transform .2s;
        }

        .btn-secondary:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            background: rgba(0, 240, 255, .1);
            transform: translateY(-2px);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            margin-top: 30px;
            color: var(--dim);
            font-size: .82rem;
        }

        .article-meta strong {
            color: var(--muted);
            font-weight: 650;
        }

        .live-panel {
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, .3);
            background: rgba(13, 17, 30, .86);
            box-shadow: 0 0 42px rgba(0, 240, 255, .09), var(--shadow);
            clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
        }

        .live-panel::before {
            content: "";
            position: absolute;
            top: 0;
            right: 15%;
            width: 38%;
            height: 1px;
            background: var(--lime);
            box-shadow: 0 0 15px var(--lime);
        }

        .live-image {
            position: relative;
            height: 168px;
            overflow: hidden;
        }

        .live-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .7;
            filter: saturate(.85) contrast(1.1);
        }

        .live-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(13, 17, 30, 1), transparent 70%);
        }

        .live-label {
            position: absolute;
            z-index: 1;
            top: 16px;
            left: 17px;
            padding: 5px 9px;
            border: 1px solid rgba(204, 255, 0, .5);
            color: var(--lime);
            background: rgba(8, 9, 15, .75);
            font-size: .66rem;
            font-weight: 800;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .live-body {
            padding: 21px 23px 24px;
        }

        .live-body h2 {
            margin: 0;
            font-size: 1.16rem;
            letter-spacing: -.02em;
        }

        .live-body p {
            margin: 8px 0 0;
            color: var(--muted);
            font-size: .88rem;
        }

        .countdown {
            display: flex;
            gap: 9px;
            margin: 18px 0 17px;
        }

        .time-box {
            min-width: 62px;
            padding: 8px 7px;
            border: 1px solid var(--line);
            background: rgba(8, 9, 15, .55);
            text-align: center;
        }

        .time-box strong {
            display: block;
            color: var(--cyan);
            font-size: 1.25rem;
            line-height: 1.1;
        }

        .time-box span {
            color: var(--dim);
            font-size: .64rem;
            letter-spacing: .06em;
            text-transform: uppercase;
        }

        .reminder-form {
            display: flex;
            gap: 8px;
            margin-top: 9px;
        }

        .reminder-form input {
            min-width: 0;
            width: 100%;
            padding: 10px 12px;
            border: 1px solid var(--line);
            outline: none;
            color: var(--text);
            background: rgba(8, 9, 15, .7);
            font-size: .83rem;
        }

        .reminder-form input::placeholder {
            color: var(--dim);
        }

        .reminder-form input:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, .1);
        }

        .reminder-form button {
            flex: 0 0 auto;
            padding: 10px 13px;
            border: 1px solid var(--lime);
            color: #081009;
            background: var(--lime);
            font-size: .8rem;
            font-weight: 800;
            transition: box-shadow .2s, transform .2s;
        }

        .reminder-form button:hover {
            box-shadow: 0 0 20px rgba(204, 255, 0, .25);
            transform: translateY(-1px);
        }

        .form-note {
            min-height: 20px;
            margin: 7px 0 0;
            color: var(--dim);
            font-size: .72rem;
        }

        .article-section {
            padding: 76px 0 100px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 720px) minmax(250px, 310px);
            align-items: start;
            gap: 58px;
            justify-content: center;
        }

        .article-main {
            min-width: 0;
        }

        .reading-lead {
            margin-bottom: 29px;
            padding: 20px 22px;
            border-left: 3px solid var(--cyan);
            background: linear-gradient(90deg, rgba(0, 240, 255, .08), rgba(0, 240, 255, 0));
            color: #d8e1ef;
        }

        .cms-content {
            color: #c8d3e4;
            font-size: 1.04rem;
            line-height: 1.78;
        }

        .cms-content h2,
        .cms-content h3 {
            margin: 43px 0 14px;
            color: var(--text);
            line-height: 1.2;
            letter-spacing: -.03em;
        }

        .cms-content h2 {
            font-size: clamp(1.55rem, 3vw, 2.15rem);
        }

        .cms-content h3 {
            font-size: 1.34rem;
        }

        .cms-content p {
            margin: 0 0 20px;
        }

        .cms-content ul,
        .cms-content ol {
            margin: 17px 0 24px;
            padding-left: 25px;
        }

        .cms-content li {
            margin: 8px 0;
            padding-left: 4px;
        }

        .cms-content a {
            color: var(--cyan);
            text-decoration: underline;
            text-decoration-color: rgba(0, 240, 255, .4);
            text-underline-offset: 3px;
        }

        .cms-content blockquote {
            margin: 26px 0;
            padding: 18px 21px;
            border: 1px solid var(--line);
            background: var(--panel-deep);
            color: #e5edf8;
        }

        .cms-content img {
            width: 100%;
            height: auto;
            margin: 25px 0;
            border: 1px solid var(--line);
        }

        .not-found {
            padding: 33px 25px;
            border: 1px solid rgba(255, 85, 119, .3);
            background: rgba(255, 85, 119, .06);
        }

        .not-found h2 {
            margin: 0 0 9px;
            color: var(--text);
            font-size: 1.45rem;
        }

        .not-found p {
            margin: 0 0 19px;
            color: var(--muted);
        }

        .side-stack {
            position: sticky;
            top: 102px;
            display: grid;
            gap: 18px;
        }

        .side-card {
            overflow: hidden;
            border: 1px solid var(--line);
            background: rgba(17, 24, 39, .72);
            box-shadow: 0 14px 35px rgba(0, 0, 0, .16);
        }

        .side-card-image {
            height: 138px;
            overflow: hidden;
        }

        .side-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

        .side-card:hover .side-card-image img {
            transform: scale(1.05);
        }

        .side-card-body {
            padding: 18px;
        }

        .side-card h2,
        .side-card h3 {
            margin: 0;
            color: var(--text);
            font-size: 1rem;
            line-height: 1.35;
        }

        .side-card p {
            margin: 9px 0 0;
            color: var(--muted);
            font-size: .84rem;
            line-height: 1.6;
        }

        .side-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            color: var(--cyan);
            font-size: .82rem;
            font-weight: 750;
        }

        .side-link::after {
            content: "→";
            transition: transform .2s ease;
        }

        .side-link:hover::after {
            transform: translateX(4px);
        }

        .side-list {
            display: grid;
            gap: 0;
            margin: 12px 0 0;
            padding: 0;
            list-style: none;
        }

        .side-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 11px 0;
            border-bottom: 1px solid rgba(0, 240, 255, .1);
            color: var(--muted);
            font-size: .83rem;
        }

        .side-list li:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .side-list b {
            flex: 0 0 auto;
            color: var(--lime);
            font-size: .72rem;
        }

        .dashboard-section {
            padding: 92px 0;
            border-top: 1px solid rgba(0, 240, 255, .08);
            border-bottom: 1px solid rgba(0, 240, 255, .08);
            background: linear-gradient(115deg, rgba(13, 17, 30, .7), rgba(8, 9, 15, .18));
        }

        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .metric {
            padding: 22px 20px;
            border-top: 2px solid var(--cyan);
            background: var(--panel);
        }

        .metric:nth-child(2) {
            border-top-color: var(--lime);
        }

        .metric:nth-child(3) {
            border-top-color: var(--blue);
        }

        .metric:nth-child(4) {
            border-top-color: #9b7cff;
        }

        .metric strong {
            display: block;
            color: var(--text);
            font-size: 1.72rem;
            line-height: 1.1;
            letter-spacing: -.045em;
        }

        .metric span {
            display: block;
            margin-top: 8px;
            color: var(--muted);
            font-size: .8rem;
        }

        .comparison-wrap {
            overflow-x: auto;
            border: 1px solid var(--line);
            background: rgba(17, 24, 39, .68);
        }

        .comparison-table {
            width: 100%;
            min-width: 620px;
            border-collapse: collapse;
            text-align: left;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 19px;
            border-bottom: 1px solid rgba(0, 240, 255, .1);
        }

        .comparison-table th {
            color: var(--cyan);
            background: rgba(0, 240, 255, .06);
            font-size: .73rem;
            letter-spacing: .1em;
            text-transform: uppercase;
        }

        .comparison-table td {
            color: var(--muted);
            font-size: .9rem;
        }

        .comparison-table tr:last-child td {
            border-bottom: 0;
        }

        .comparison-table td:first-child {
            color: var(--text);
            font-weight: 750;
        }

        .result-win {
            color: var(--lime) !important;
            font-weight: 750;
        }

        .result-split {
            color: #ffd166 !important;
            font-weight: 750;
        }

        .process-section {
            padding: 100px 0 86px;
        }

        .process-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 62px;
            align-items: center;
        }

        .process-copy {
            max-width: 590px;
        }

        .process-copy h2 {
            margin: 10px 0 17px;
            font-size: clamp(1.9rem, 3.4vw, 3rem);
            line-height: 1.1;
            letter-spacing: -.045em;
        }

        .process-copy p {
            margin: 0;
            color: var(--muted);
        }

        .step-list {
            display: grid;
            gap: 0;
            margin: 29px 0 0;
            padding: 0;
            list-style: none;
        }

        .step-list li {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 16px;
            padding: 17px 0;
            border-top: 1px solid var(--line);
        }

        .step-number {
            display: grid;
            place-items: center;
            width: 34px;
            height: 34px;
            border: 1px solid var(--cyan);
            color: var(--cyan);
            font-size: .78rem;
            font-weight: 850;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
        }

        .step-list h3 {
            margin: 0;
            color: var(--text);
            font-size: 1rem;
        }

        .step-list p {
            margin: 5px 0 0;
            color: var(--muted);
            font-size: .88rem;
        }

        .formula-box {
            position: relative;
            padding: 32px;
            border: 1px solid rgba(34, 102, 255, .55);
            background:
                linear-gradient(135deg, rgba(34, 102, 255, .14), transparent 50%),
                var(--panel);
            box-shadow: 0 0 45px rgba(34, 102, 255, .1);
        }

        .formula-box::after {
            content: "2¼";
            position: absolute;
            right: 20px;
            bottom: 8px;
            color: rgba(0, 240, 255, .08);
            font-size: 6rem;
            font-weight: 950;
            line-height: 1;
        }

        .formula-box h3 {
            position: relative;
            z-index: 1;
            margin: 0;
            color: var(--text);
            font-size: 1.18rem;
        }

        .formula {
            position: relative;
            z-index: 1;
            margin: 22px 0;
            padding: 18px;
            border-left: 2px solid var(--lime);
            color: var(--lime);
            background: rgba(8, 9, 15, .55);
            font-size: 1rem;
            font-weight: 750;
        }

        .formula-box p {
            position: relative;
            z-index: 1;
            margin: 0;
            color: var(--muted);
            font-size: .9rem;
        }

        .faq-section {
            padding: 92px 0;
            background: rgba(13, 17, 30, .62);
            border-top: 1px solid rgba(0, 240, 255, .08);
        }

        .faq-list {
            max-width: 850px;
            margin: 0;
        }

        .faq-item {
            border-top: 1px solid var(--line);
        }

        .faq-item:last-child {
            border-bottom: 1px solid var(--line);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 21px 0;
            color: var(--text);
            font-weight: 750;
            list-style: none;
            cursor: pointer;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            flex: 0 0 auto;
            color: var(--cyan);
            font-size: 1.4rem;
            font-weight: 400;
            transition: transform .2s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-width: 740px;
            padding: 0 44px 21px 0;
            color: var(--muted);
            font-size: .94rem;
        }

        .cta-section {
            padding: 92px 0 108px;
        }

        .cta-box {
            position: relative;
            overflow: hidden;
            padding: 48px clamp(25px, 6vw, 78px);
            border: 1px solid rgba(0, 240, 255, .35);
            background:
                linear-gradient(105deg, rgba(0, 240, 255, .12), transparent 48%),
                var(--panel);
            text-align: center;
            clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
        }

        .cta-box::before,
        .cta-box::after {
            content: "";
            position: absolute;
            width: 90px;
            height: 1px;
            background: var(--lime);
            box-shadow: 0 0 18px var(--lime);
        }

        .cta-box::before {
            top: 20px;
            left: 25px;
        }

        .cta-box::after {
            right: 25px;
            bottom: 20px;
        }

        .cta-box h2 {
            position: relative;
            z-index: 1;
            max-width: 760px;
            margin: 0 auto;
            color: var(--text);
            font-size: clamp(1.8rem, 4vw, 3.2rem);
            line-height: 1.1;
            letter-spacing: -.05em;
        }

        .cta-box p {
            position: relative;
            z-index: 1;
            max-width: 650px;
            margin: 16px auto 0;
            color: var(--muted);
        }

        .cta-box .hero-actions {
            position: relative;
            z-index: 1;
            justify-content: center;
        }

        .fab {
            position: fixed;
            z-index: 50;
            left: 1rem;
            bottom: 6rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 52px;
            min-height: 48px;
            padding: 0 15px;
            border: 1px solid var(--cyan);
            color: var(--cyan);
            background: rgba(0, 0, 0, .66);
            box-shadow: 0 0 15px rgba(0, 240, 255, .5);
            backdrop-filter: blur(12px);
            font-size: .78rem;
            font-weight: 900;
            letter-spacing: .1em;
            clip-path: polygon(9px 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
            opacity: .72;
            animation: fab-breathe 3.5s ease-in-out infinite;
            transition: opacity .2s, transform .2s, box-shadow .2s, color .2s, border-color .2s;
        }

        .fab::after {
            content: "NEW";
            position: absolute;
            top: -9px;
            right: -8px;
            padding: 2px 4px;
            color: #081009;
            background: var(--lime);
            font-size: .48rem;
            letter-spacing: .04em;
            animation: new-blink 1.7s steps(2, end) infinite;
        }

        .fab:hover {
            opacity: 1;
            color: var(--lime);
            border-color: var(--lime);
            box-shadow: 0 0 28px rgba(204, 255, 0, .46);
            transform: scale(1.08);
        }

        .fab:active {
            transform: scale(.95) translateY(2px);
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: .62; }
            50% { opacity: .86; }
        }

        @keyframes new-blink {
            0%, 65% { opacity: 1; }
            66%, 100% { opacity: .35; }
        }

        footer {
            border-top: 1px solid rgba(0, 240, 255, .13);
            background: #06070c;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 55px;
            padding: 66px 0 53px;
        }

        .footer-copy {
            max-width: 390px;
            margin: 20px 0 0;
            color: var(--dim);
            font-size: .85rem;
        }

        .footer-col {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 11px;
        }

        .footer-col h3 {
            margin: 0 0 8px;
            color: var(--text);
            font-size: .82rem;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .footer-col a {
            color: var(--dim);
            font-size: .84rem;
            transition: color .2s ease, transform .2s ease;
        }

        .footer-col a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

        .responsible {
            display: inline-block;
            margin-top: 6px;
            padding: 5px 8px;
            border: 1px solid rgba(204, 255, 0, .25);
            color: var(--lime);
            font-size: .7rem;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            padding: 19px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, .06);
            color: var(--dim);
            font-size: .72rem;
        }

        :focus-visible {
            outline: 2px solid var(--lime);
            outline-offset: 4px;
        }

        @media (max-width: 1024px) {
            .nav-wrap {
                gap: 18px;
            }

            .desktop-nav {
                gap: 0;
            }

            .nav-link {
                padding-inline: 9px;
                font-size: .79rem;
            }

            .hero-grid {
                gap: 35px;
            }

            .article-layout {
                grid-template-columns: minmax(0, 720px) 260px;
                gap: 32px;
            }

            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(var(--container), calc(100% - 34px));
            }

            .desktop-nav {
                display: none;
            }

            .nav-wrap {
                min-height: 68px;
            }

            .nav-actions {
                gap: 8px;
            }

            .login-link {
                font-size: .78rem;
            }

            .nav-cta {
                padding: 9px 12px;
                font-size: .8rem;
            }

            .menu-toggle {
                display: block;
            }

            .mobile-panel {
                padding: 12px 0 18px;
                border-top: 1px solid rgba(0, 240, 255, .1);
            }

            .mobile-panel.open {
                display: grid;
                gap: 5px;
            }

            .mobile-panel .nav-link {
                padding: 12px 10px;
            }

            .article-hero {
                min-height: auto;
                padding: 125px 0 70px;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 38px;
            }

            .hero-copy h1 {
                font-size: clamp(2.35rem, 10vw, 4rem);
            }

            .live-panel {
                max-width: 560px;
            }

            .article-section,
            .section,
            .process-section,
            .faq-section,
            .cta-section,
            .dashboard-section {
                padding: 70px 0;
            }

            .article-layout {
                grid-template-columns: 1fr;
                gap: 45px;
            }

            .side-stack {
                position: static;
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 42px;
            }

            .footer-grid {
                grid-template-columns: 1.2fr 1fr;
                gap: 35px;
            }

            .footer-grid > :first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: min(var(--container), calc(100% - 28px));
            }

            .brand-copy strong {
                font-size: .78rem;
            }

            .brand-copy span {
                font-size: .58rem;
            }

            .brand-mark {
                width: 31px;
                height: 31px;
                font-size: .83rem;
            }

            .nav-actions {
                margin-left: auto;
            }

            .login-link {
                display: none;
            }

            .nav-cta {
                padding: 8px 10px;
                font-size: .74rem;
            }

            .article-hero {
                padding-top: 112px;
            }

            .hero-copy h1 {
                font-size: 2.45rem;
            }

            .hero-intro {
                font-size: .95rem;
            }

            .hero-actions {
                display: grid;
                grid-template-columns: 1fr;
            }

            .hero-actions a {
                text-align: center;
            }

            .article-meta {
                display: grid;
                gap: 6px;
            }

            .live-body {
                padding: 18px;
            }

            .countdown {
                gap: 5px;
            }

            .time-box {
                min-width: 0;
                flex: 1;
            }

            .reminder-form {
                display: grid;
                grid-template-columns: 1fr;
            }

            .reminder-form button {
                width: 100%;
            }

            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: 9px;
            }

            .metric {
                padding: 17px 14px;
            }

            .metric strong {
                font-size: 1.35rem;
            }

            .metric span {
                font-size: .72rem;
            }

            .side-stack {
                grid-template-columns: 1fr;
            }

            .formula-box {
                padding: 24px 20px;
            }

            .faq-item summary {
                padding: 17px 0;
                font-size: .93rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 31px;
                padding-top: 48px;
            }

            .footer-grid > :first-child {
                grid-column: auto;
            }

            .footer-bottom {
                display: grid;
                gap: 6px;
            }

            .fab {
                left: 14px;
                bottom: 76px;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #08090f;
            --bg-soft: #0d111e;
            --panel: #111827;
            --panel-light: #151e31;
            --line: rgba(0, 240, 255, .16);
            --line-strong: rgba(0, 82, 255, .55);
            --blue: #2266ff;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --text: #f8fafc;
            --muted: #aab6ca;
            --dim: #71809b;
            --danger: #ff647c;
            --warning: #ffc857;
            --radius: 20px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            background:
                radial-gradient(circle at 84% 8%, rgba(0, 240, 255, .08), transparent 29rem),
                radial-gradient(circle at 8% 44%, rgba(34, 102, 255, .09), transparent 33rem),
                var(--bg);
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: -1;
            opacity: .2;
            background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
            background-size: 46px 46px;
            mask-image: linear-gradient(to bottom, black, transparent 76%);
        }
        a { color: inherit; text-decoration: none; }
        button, input, select { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        h1, h2, h3, h4, p { margin: 0; }
        ul { margin: 0; padding: 0; list-style: none; }

        .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
        .eyebrow {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .17em;
            text-transform: uppercase;
        }
        .section { padding: 100px 0; position: relative; }
        .section-heading { max-width: 720px; margin-bottom: 42px; }
        .section-heading h2 {
            color: var(--text);
            font-size: clamp(1.9rem, 3.3vw, 3.1rem);
            line-height: 1.12;
            letter-spacing: -.045em;
            margin-top: 11px;
        }
        .section-heading p { color: var(--muted); margin-top: 17px; max-width: 650px; }
        .section-heading.split {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 30px;
            max-width: none;
        }
        .section-heading.split p { margin: 0; max-width: 440px; }

        .site-header {
            position: fixed;
            z-index: 40;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, .84);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, .12);
        }
        .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 34px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--bg);
            background: var(--lime);
            font-weight: 950;
            clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
        }
        .brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
        .brand-copy strong { font-size: .92rem; letter-spacing: .04em; }
        .brand-copy span {
            color: var(--cyan);
            font-size: .67rem;
            margin-top: 4px;
            letter-spacing: .08em;
            text-transform: uppercase;
        }
        .desktop-nav { display: flex; align-items: center; gap: 5px; flex: 1; }
        .nav-link {
            color: var(--muted);
            padding: 9px 13px;
            border-radius: 9px;
            font-size: .88rem;
            white-space: nowrap;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }
        .nav-link:hover { color: var(--text); background: rgba(0, 240, 255, .08); transform: translateY(-1px); }
        .nav-link.active { color: var(--cyan); background: rgba(0, 240, 255, .1); }
        .nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
        .login-link { color: var(--muted); font-size: .88rem; font-weight: 700; padding: 8px; transition: color .2s ease; }
        .login-link:hover { color: var(--cyan); }
        .nav-cta, .btn-primary {
            color: #03101a;
            background: var(--cyan);
            font-weight: 850;
            border: 1px solid var(--cyan);
            padding: 11px 17px;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: transform .2s, box-shadow .2s, background .2s;
        }
        .nav-cta:hover, .btn-primary:hover {
            background: var(--lime);
            box-shadow: 0 0 26px rgba(0, 240, 255, .28);
            transform: translateY(-2px);
        }
        .nav-cta:active, .btn-primary:active { transform: translateY(1px); }
        .menu-toggle {
            display: none;
            color: var(--cyan);
            background: transparent;
            border: 1px solid var(--line);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 1.3rem;
        }
        .mobile-panel { display: none; }

        .inner-hero {
            position: relative;
            min-height: 660px;
            padding: 142px 0 76px;
            overflow: hidden;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--line);
            background-image: linear-gradient(90deg, rgba(8,9,15,.96) 0%, rgba(8,9,15,.83) 46%, rgba(8,9,15,.4) 100%), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
        }
        .inner-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 160px;
            background: linear-gradient(transparent, var(--bg));
            pointer-events: none;
        }
        .hero-layout {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
            gap: 62px;
            align-items: center;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .81rem;
            color: var(--muted);
            margin-bottom: 20px;
        }
        .breadcrumb span { color: var(--cyan); }
        .hero-copy h1 {
            font-size: clamp(2.55rem, 5.1vw, 5.1rem);
            letter-spacing: -.065em;
            line-height: 1;
            max-width: 760px;
            margin: 13px 0 23px;
        }
        .hero-copy h1 em { color: var(--cyan); font-style: normal; }
        .hero-intro { color: #d9e2f2; font-size: clamp(1rem, 1.45vw, 1.17rem); max-width: 660px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
        .btn-secondary {
            border: 1px solid rgba(0, 240, 255, .42);
            background: rgba(8, 9, 15, .55);
            color: var(--text);
            padding: 11px 17px;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: border .2s, color .2s, background .2s, transform .2s;
        }
        .btn-secondary:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(0, 240, 255, .1); transform: translateY(-2px); }
        .hero-note { color: var(--dim); margin-top: 20px; font-size: .82rem; }

        .coupon-wall {
            position: relative;
            padding: 15px;
            background: linear-gradient(145deg, rgba(21, 30, 49, .96), rgba(8, 9, 15, .96));
            border: 1px solid var(--line-strong);
            box-shadow: 0 0 0 1px rgba(0, 240, 255, .08), var(--shadow);
            clip-path: polygon(0 20px, 20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
        }
        .coupon-wall::before {
            content: "";
            position: absolute;
            width: 240px;
            height: 240px;
            right: -90px;
            top: -90px;
            border-radius: 50%;
            background: rgba(0, 240, 255, .1);
            filter: blur(20px);
        }
        .coupon-topline {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 3px 5px 14px;
            font-size: .75rem;
            color: var(--muted);
            border-bottom: 1px dashed rgba(0, 240, 255, .31);
        }
        .status-live { display: inline-flex; align-items: center; gap: 7px; color: var(--lime); font-weight: 800; }
        .status-live i { display: block; width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 10px var(--lime); animation: blink 1.7s infinite; }
        .main-coupon {
            position: relative;
            z-index: 1;
            padding: 26px 10px 24px;
            display: grid;
            grid-template-columns: 78px 1fr;
            align-items: center;
            gap: 16px;
        }
        .coupon-icon {
            width: 74px;
            height: 74px;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--blue), var(--cyan));
            color: #04121d;
            font-size: 2rem;
            font-weight: 900;
            clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
        }
        .coupon-title { font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); }
        .coupon-value { font-size: clamp(1.7rem, 3.2vw, 2.65rem); font-weight: 900; line-height: 1.06; letter-spacing: -.045em; margin: 5px 0; }
        .coupon-text { color: var(--muted); font-size: .9rem; }
        .coupon-redeem {
            position: relative;
            z-index: 1;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
            padding: 15px 17px;
            color: #07101a;
            background: var(--lime);
            border: 0;
            font-weight: 900;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
        }
        .coupon-redeem:hover { transform: translateY(-2px); background: var(--cyan); box-shadow: 0 10px 28px rgba(204,255,0,.18); }
        .coupon-redeem span:last-child { font-size: 1.2rem; }
        .coupon-foot { position: relative; z-index: 1; color: var(--dim); padding: 13px 5px 2px; font-size: .77rem; text-align: center; }

        .signal-strip {
            border-bottom: 1px solid var(--line);
            background: rgba(13, 17, 30, .72);
        }
        .signal-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            min-height: 112px;
        }
        .signal-item {
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 20px 25px;
            border-right: 1px solid var(--line);
        }
        .signal-item:first-child { border-left: 1px solid var(--line); }
        .signal-number { color: var(--cyan); font-size: 1.65rem; line-height: 1; font-weight: 900; letter-spacing: -.05em; }
        .signal-label { color: var(--muted); font-size: .82rem; line-height: 1.35; }

        .dashboard-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr);
            gap: 42px;
            align-items: stretch;
        }
        .formula-board {
            min-height: 100%;
            padding: 34px;
            background: linear-gradient(135deg, rgba(17, 24, 39, .94), rgba(13,17,30,.7));
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
        }
        .formula-board h3 { font-size: 1.35rem; letter-spacing: -.03em; }
        .formula-board > p { color: var(--muted); margin: 10px 0 26px; }
        .formula-row {
            display: grid;
            grid-template-columns: 118px 1fr auto;
            gap: 15px;
            align-items: center;
            padding: 15px 0;
            border-top: 1px solid rgba(0, 240, 255, .1);
        }
        .formula-row:last-child { border-bottom: 1px solid rgba(0, 240, 255, .1); }
        .formula-state { color: var(--text); font-weight: 800; }
        .formula-expression { color: var(--muted); font-size: .92rem; }
        .formula-result {
            color: var(--cyan);
            font-size: .82rem;
            font-weight: 800;
            white-space: nowrap;
            text-align: right;
        }
        .formula-result.loss { color: var(--danger); }
        .logic-note {
            display: flex;
            gap: 12px;
            margin-top: 25px;
            padding: 16px;
            border-left: 3px solid var(--cyan);
            background: rgba(0, 240, 255, .06);
            color: #d7e4f2;
            font-size: .9rem;
        }
        .logic-note b { color: var(--cyan); }

        .calculator {
            padding: 32px;
            background: var(--panel-light);
            border: 1px solid rgba(34, 102, 255, .5);
            box-shadow: 0 18px 52px rgba(0,0,0,.26);
            clip-path: polygon(0 18px, 18px 0, 100% 0, 100% 100%, 18px 100%, 0 calc(100% - 18px));
        }
        .calculator h3 { font-size: 1.35rem; letter-spacing: -.03em; }
        .calculator p { color: var(--muted); margin: 9px 0 21px; font-size: .91rem; }
        .field { display: grid; gap: 7px; margin-bottom: 15px; }
        .field label { color: #dce5f3; font-size: .81rem; font-weight: 750; }
        .field input, .field select {
            width: 100%;
            outline: none;
            appearance: none;
            border: 1px solid rgba(0, 240, 255, .2);
            background: rgba(8, 9, 15, .66);
            color: var(--text);
            border-radius: 8px;
            padding: 12px 13px;
            transition: border .2s, box-shadow .2s, background .2s;
        }
        .field input:focus, .field select:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(0,240,255,.12);
            background: rgba(8, 9, 15, .9);
        }
        .calc-btn {
            width: 100%;
            margin-top: 5px;
            padding: 13px;
            border: 1px solid var(--cyan);
            color: #03101a;
            background: var(--cyan);
            font-weight: 900;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
        }
        .calc-btn:hover { background: var(--lime); transform: translateY(-2px); box-shadow: 0 0 22px rgba(0,240,255,.22); }
        .calc-result {
            min-height: 70px;
            margin-top: 16px;
            padding: 13px 15px;
            border: 1px solid rgba(0, 240, 255, .16);
            background: rgba(8, 9, 15, .55);
            color: var(--muted);
            font-size: .89rem;
        }
        .calc-result strong { display: block; color: var(--cyan); font-size: 1.04rem; margin-bottom: 3px; }

        .matrix-area { background: linear-gradient(180deg, transparent, rgba(13,17,30,.72), transparent); }
        .matrix {
            display: grid;
            grid-template-columns: 1.15fr .85fr .85fr .85fr;
            border-top: 1px solid var(--line);
            border-left: 1px solid var(--line);
        }
        .matrix > div {
            min-height: 112px;
            padding: 20px;
            border-right: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .matrix-head {
            color: var(--dim);
            font-size: .71rem;
            font-weight: 800;
            letter-spacing: .1em;
            text-transform: uppercase;
            background: rgba(0, 240, 255, .04);
        }
        .matrix-title { font-weight: 850; }
        .matrix-title small { display: block; color: var(--muted); font-size: .81rem; font-weight: 500; margin-top: 4px; }
        .matrix-state { display: flex; align-items: center; color: #d9e4f2; font-size: .9rem; }
        .matrix-profit { color: var(--cyan); font-weight: 850; }
        .matrix-profit.red { color: var(--danger); }
        .matrix-profit.gold { color: var(--warning); }

        .comparison-layout {
            display: grid;
            grid-template-columns: minmax(0, .8fr) minmax(400px, 1.2fr);
            gap: 58px;
            align-items: center;
        }
        .image-story { position: relative; }
        .image-story img {
            width: 100%;
            min-height: 480px;
            object-fit: cover;
            filter: saturate(.85) contrast(1.05);
            border: 1px solid var(--line);
        }
        .image-story::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(8,9,15,.92));
            pointer-events: none;
        }
        .image-caption {
            position: absolute;
            z-index: 1;
            left: 24px;
            bottom: 22px;
            right: 24px;
            color: #dbe8f5;
            font-size: .88rem;
        }
        .case-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
        .case-row {
            display: grid;
            grid-template-columns: 42px 1fr auto;
            gap: 17px;
            align-items: center;
            padding: 21px 0;
            border-bottom: 1px solid var(--line);
        }
        .case-index {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--line-strong);
            font-size: .78rem;
            font-weight: 850;
        }
        .case-row h3 { font-size: 1rem; }
        .case-row p { color: var(--muted); font-size: .87rem; margin-top: 4px; }
        .case-total { text-align: right; color: var(--cyan); font-size: .9rem; font-weight: 850; white-space: nowrap; }
        .case-total span { display: block; color: var(--dim); font-size: .72rem; font-weight: 600; margin-top: 3px; }

        .steps-section { padding-top: 70px; }
        .steps-track {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            border: 1px solid var(--line);
            background: rgba(17, 24, 39, .45);
        }
        .step { padding: 31px; min-height: 240px; border-right: 1px solid var(--line); }
        .step:last-child { border-right: 0; }
        .step-number { color: var(--blue); font-size: .77rem; font-weight: 900; letter-spacing: .14em; }
        .step h3 { font-size: 1.25rem; letter-spacing: -.03em; margin: 28px 0 10px; }
        .step p { color: var(--muted); font-size: .92rem; }
        .step:hover { background: rgba(0,240,255,.045); }
        .step:hover .step-number { color: var(--cyan); }

        .faq-shell {
            display: grid;
            grid-template-columns: .74fr 1.26fr;
            gap: 76px;
            align-items: start;
        }
        .faq-intro { position: sticky; top: 110px; }
        .faq-intro h2 {
            font-size: clamp(1.9rem, 3vw, 2.8rem);
            line-height: 1.1;
            letter-spacing: -.045em;
            margin-top: 10px;
        }
        .faq-intro p { color: var(--muted); margin-top: 16px; }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            padding: 20px 2px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            border: 0;
            background: transparent;
            color: var(--text);
            text-align: left;
            font-size: 1rem;
            font-weight: 780;
        }
        .faq-question span:last-child { color: var(--cyan); font-size: 1.35rem; font-weight: 400; transition: transform .2s ease; }
        .faq-answer { display: none; color: var(--muted); padding: 0 30px 20px 0; font-size: .94rem; }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question span:last-child { transform: rotate(45deg); }

        .cta-section { padding: 30px 0 104px; }
        .cta-panel {
            position: relative;
            overflow: hidden;
            padding: 58px;
            background-image: linear-gradient(100deg, rgba(8,9,15,.98), rgba(8,9,15,.77)), url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(0,240,255,.35);
            box-shadow: var(--shadow);
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(0, 240, 255, .12);
            right: -150px;
            top: -180px;
            filter: blur(30px);
        }
        .cta-content { position: relative; z-index: 1; max-width: 690px; }
        .cta-content h2 { font-size: clamp(2rem, 4vw, 3.45rem); line-height: 1.05; letter-spacing: -.05em; }
        .cta-content p { color: #d3deed; margin: 17px 0 24px; }
        .mini-form { display: flex; gap: 10px; max-width: 580px; }
        .mini-form input {
            min-width: 0;
            flex: 1;
            color: var(--text);
            border: 1px solid rgba(0,240,255,.3);
            background: rgba(8,9,15,.68);
            padding: 13px 15px;
            outline: none;
        }
        .mini-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.11); }
        .form-message { min-height: 20px; color: var(--lime); margin-top: 10px; font-size: .83rem; }

        footer {
            padding: 68px 0 25px;
            background: #06070c;
            border-top: 1px solid var(--line);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.45fr .9fr .9fr;
            gap: 70px;
            padding-bottom: 53px;
        }
        .footer-copy { color: var(--muted); max-width: 410px; margin-top: 19px; font-size: .9rem; }
        .footer-col { display: grid; align-content: start; gap: 11px; }
        .footer-col h3 { color: var(--text); font-size: .83rem; letter-spacing: .09em; text-transform: uppercase; margin-bottom: 7px; }
        .footer-col a { color: var(--muted); font-size: .88rem; transition: color .2s, transform .2s; }
        .footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
        .responsible {
            display: inline-flex;
            width: max-content;
            margin-top: 7px;
            padding: 5px 8px;
            color: var(--warning);
            border: 1px solid rgba(255, 200, 87, .32);
            font-size: .73rem;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            padding-top: 22px;
            color: var(--dim);
            border-top: 1px solid rgba(0,240,255,.1);
            font-size: .79rem;
        }

        .fab {
            position: fixed;
            z-index: 50;
            left: 16px;
            bottom: 96px;
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid transparent;
            border-radius: 15px;
            background: linear-gradient(rgba(8,9,15,.88), rgba(8,9,15,.88)) padding-box, linear-gradient(135deg, var(--cyan), var(--blue), var(--lime)) border-box;
            box-shadow: 0 0 17px rgba(0,240,255,.43);
            backdrop-filter: blur(12px);
            opacity: .72;
            transition: transform .25s ease, opacity .25s ease, box-shadow .25s ease;
            animation: fabPulse 2.5s infinite;
        }
        .fab::after {
            content: "MỚI";
            position: absolute;
            top: -7px;
            right: -9px;
            padding: 2px 5px;
            color: #0c1118;
            background: var(--lime);
            font-size: .55rem;
            font-weight: 900;
            letter-spacing: .06em;
            animation: blink 1.25s infinite;
        }
        .fab:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 0 29px rgba(0,240,255,.75); }
        .fab:active { transform: scale(.95); }
        .fab svg { width: 25px; height: 25px; }

        @keyframes blink { 50% { opacity: .38; } }
        @keyframes fabPulse { 50% { box-shadow: 0 0 24px rgba(0,240,255,.68); } }

        @media (max-width: 1080px) {
            .nav-wrap { gap: 17px; }
            .desktop-nav { gap: 0; }
            .nav-link { padding-inline: 8px; font-size: .8rem; }
            .hero-layout { gap: 32px; }
            .faq-shell { gap: 48px; }
            .footer-grid { gap: 42px; }
        }
        @media (max-width: 820px) {
            .container { width: min(var(--container), calc(100% - 34px)); }
            .desktop-nav { display: none; }
            .nav-wrap { min-height: 68px; gap: 12px; }
            .nav-actions { margin-left: auto; }
            .login-link { display: none; }
            .nav-cta { padding: 9px 12px; font-size: .82rem; }
            .menu-toggle { display: grid; place-items: center; }
            .mobile-panel {
                padding: 0 0 14px;
                grid-template-columns: 1fr;
                gap: 4px;
                max-height: 0;
                overflow: hidden;
                transition: max-height .3s ease;
            }
            .mobile-panel.open { display: grid; max-height: 280px; }
            .mobile-panel .nav-link { padding: 11px 12px; }
            .inner-hero { min-height: auto; padding: 118px 0 62px; }
            .hero-layout, .dashboard-grid, .comparison-layout, .faq-shell { grid-template-columns: 1fr; }
            .hero-layout { gap: 38px; }
            .coupon-wall { max-width: 560px; }
            .signal-grid { grid-template-columns: repeat(2, 1fr); }
            .signal-item:nth-child(3) { border-left: 1px solid var(--line); }
            .formula-board, .calculator, .cta-panel { padding: 27px; }
            .comparison-layout { gap: 38px; }
            .image-story img { min-height: 330px; }
            .faq-intro { position: static; }
            .steps-track { grid-template-columns: 1fr; }
            .step { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
            .step:last-child { border-bottom: 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid > div:first-child { grid-column: 1 / -1; }
        }
        @media (max-width: 620px) {
            .section { padding: 74px 0; }
            .section-heading.split { display: block; }
            .section-heading.split p { margin-top: 16px; }
            .brand-copy strong { font-size: .83rem; }
            .brand-copy span { font-size: .59rem; }
            .nav-cta { display: none; }
            .formula-row { grid-template-columns: 1fr auto; }
            .formula-expression { grid-column: 1 / -1; grid-row: 2; }
            .matrix { grid-template-columns: 1fr 1fr; }
            .matrix > div { min-height: 94px; padding: 15px; }
            .matrix-head:nth-child(3), .matrix-head:nth-child(4) { display: none; }
            .matrix > div:nth-child(4n+3), .matrix > div:nth-child(4n+4) { display: none; }
            .case-row { grid-template-columns: 35px 1fr; }
            .case-total { grid-column: 2; text-align: left; }
            .mini-form { display: grid; }
            .footer-grid { grid-template-columns: 1fr; gap: 34px; }
            .footer-grid > div:first-child { grid-column: auto; }
            .footer-bottom { display: grid; }
            .cta-panel { padding: 34px 24px; }
            .fab { left: 13px; bottom: 23px; }
        }
        @media (max-width: 420px) {
            .container { width: min(var(--container), calc(100% - 28px)); }
            .brand-mark { width: 30px; height: 30px; }
            .hero-copy h1 { font-size: 2.45rem; }
            .main-coupon { grid-template-columns: 58px 1fr; padding-inline: 3px; }
            .coupon-icon { width: 56px; height: 56px; font-size: 1.45rem; }
            .signal-grid { grid-template-columns: 1fr; }
            .signal-item, .signal-item:nth-child(3) { border-left: 1px solid var(--line); }
            .formula-board, .calculator { padding: 22px; }
        }

/* roulang page: category3 */
:root {
            --bg: #08090f;
            --bg-soft: #0d111e;
            --panel: #111827;
            --panel-light: #151e31;
            --line: rgba(0, 240, 255, .16);
            --line-strong: rgba(0, 82, 255, .55);
            --blue: #2266ff;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --text: #f8fafc;
            --muted: #aab6ca;
            --dim: #71809b;
            --danger: #ff4d65;
            --success: #ccff00;
            --radius: 20px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            background:
                radial-gradient(circle at 82% 7%, rgba(0, 240, 255, .07), transparent 27rem),
                radial-gradient(circle at 12% 42%, rgba(34, 102, 255, .08), transparent 30rem),
                var(--bg);
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: -1;
            opacity: .22;
            background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
            background-size: 46px 46px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
        }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        img { display: block; max-width: 100%; }
        h1, h2, h3, p { margin-top: 0; }
        :focus-visible { outline: 3px solid var(--lime); outline-offset: 3px; }

        .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
        .eyebrow {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .17em;
            text-transform: uppercase;
        }
        .section { padding: 104px 0; position: relative; }
        .section-heading { max-width: 700px; margin-bottom: 44px; }
        .section-heading h2 {
            color: var(--text);
            font-size: clamp(1.9rem, 3.3vw, 3.1rem);
            line-height: 1.12;
            letter-spacing: -.04em;
            margin: 11px 0 0;
        }
        .section-heading p { color: var(--muted); margin: 17px 0 0; max-width: 640px; }
        .section-heading.split {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 28px;
            max-width: none;
        }
        .section-heading.split p { margin: 0; max-width: 430px; }

        .site-header {
            position: fixed;
            z-index: 40;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, .83);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, .12);
        }
        .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 34px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--bg);
            background: var(--lime);
            font-weight: 950;
            clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
        }
        .brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
        .brand-copy strong { font-size: .92rem; letter-spacing: .04em; }
        .brand-copy span { color: var(--cyan); font-size: .67rem; margin-top: 4px; letter-spacing: .08em; text-transform: uppercase; }
        .desktop-nav { display: flex; align-items: center; gap: 5px; flex: 1; }
        .nav-link {
            color: var(--muted);
            padding: 9px 13px;
            border-radius: 9px;
            font-size: .88rem;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }
        .nav-link:hover { color: var(--text); background: rgba(0, 240, 255, .08); transform: translateY(-1px); }
        .nav-link.active { color: var(--cyan); background: rgba(0, 240, 255, .1); }
        .nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
        .login-link { color: var(--muted); font-size: .88rem; padding: 8px; transition: color .2s; }
        .login-link:hover { color: var(--cyan); }
        .nav-cta, .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #03101a;
            background: var(--cyan);
            font-weight: 850;
            border: 1px solid var(--cyan);
            padding: 11px 17px;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: transform .2s, box-shadow .2s, background .2s;
        }
        .nav-cta:hover, .btn-primary:hover {
            background: var(--lime);
            box-shadow: 0 0 26px rgba(0, 240, 255, .28);
            transform: translateY(-2px);
        }
        .nav-cta:active, .btn-primary:active { transform: translateY(1px); }
        .menu-toggle {
            display: none;
            color: var(--cyan);
            background: transparent;
            border: 1px solid var(--line);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 1.3rem;
        }
        .mobile-panel { display: none; }

        .category-hero {
            position: relative;
            min-height: 660px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 140px 0 70px;
            border-bottom: 1px solid var(--line);
            background:
                linear-gradient(90deg, rgba(8,9,15,.98) 0%, rgba(8,9,15,.9) 42%, rgba(8,9,15,.42) 100%),
                url('/assets/images/backpic/back-3.jpg') center / cover no-repeat;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 180px;
            background: linear-gradient(transparent, var(--bg));
            pointer-events: none;
        }
        .hero-layout {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            align-items: center;
            gap: clamp(34px, 7vw, 110px);
        }
        .hero-copy { max-width: 710px; }
        .hero-copy h1 {
            font-size: clamp(2.55rem, 5.1vw, 5.2rem);
            line-height: .99;
            letter-spacing: -.065em;
            margin: 15px 0 23px;
        }
        .hero-copy h1 em { font-style: normal; color: var(--cyan); }
        .hero-copy p {
            color: #d8e1ef;
            font-size: clamp(1rem, 1.45vw, 1.16rem);
            max-width: 630px;
            margin-bottom: 0;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(0, 240, 255, .42);
            background: rgba(8, 9, 15, .54);
            color: var(--text);
            padding: 11px 17px;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: border .2s, color .2s, background .2s, transform .2s;
        }
        .btn-secondary:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(0, 240, 255, .1); transform: translateY(-2px); }
        .hero-points { display: flex; flex-wrap: wrap; gap: 12px 22px; margin: 34px 0 0; padding: 0; list-style: none; }
        .hero-points li { color: var(--muted); font-size: .89rem; }
        .hero-points li::before { content: "✓"; color: var(--lime); margin-right: 8px; font-weight: 900; }

        .vertical-board {
            position: relative;
            min-height: 492px;
            padding: 17px;
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, .46);
            background: rgba(10, 15, 27, .87);
            box-shadow: 0 0 0 5px rgba(0, 240, 255, .05), 0 25px 70px rgba(0,0,0,.5), 0 0 36px rgba(0,240,255,.16);
            clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
        }
        .vertical-board::before {
            content: "";
            position: absolute;
            inset: 0;
            opacity: .27;
            background: linear-gradient(140deg, transparent 35%, rgba(0,240,255,.22), transparent 65%);
            animation: scan 4s linear infinite;
        }
        @keyframes scan { from { transform: translateY(-115%); } to { transform: translateY(115%); } }
        .board-head { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 8px; color: var(--cyan); font-weight: 800; font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; }
        .board-live { display: inline-flex; align-items: center; gap: 6px; color: var(--lime); }
        .board-live i { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px var(--lime); animation: pulse 1.2s infinite; }
        @keyframes pulse { 50% { opacity: .35; transform: scale(.7); } }
        .score-core { position: relative; text-align: center; padding: 53px 0 32px; }
        .score-label { color: var(--dim); font-size: .77rem; text-transform: uppercase; letter-spacing: .12em; }
        .score-big { color: var(--text); font-size: 5.3rem; line-height: 1; font-weight: 900; letter-spacing: -.09em; margin-top: 12px; }
        .score-big span { color: var(--cyan); font-size: 2.2rem; vertical-align: middle; }
        .score-note { color: var(--lime); font-size: .78rem; font-weight: 800; letter-spacing: .08em; margin-top: 8px; }
        .board-line { height: 1px; background: var(--line); position: relative; }
        .split-result { position: relative; display: grid; grid-template-columns: 1fr 1fr; margin-top: 25px; }
        .result-half { padding: 7px 11px; }
        .result-half + .result-half { border-left: 1px solid var(--line); }
        .result-half b { display: block; font-size: 1.07rem; color: var(--text); margin-top: 2px; }
        .result-half small { color: var(--muted); display: block; font-size: .72rem; }
        .mini-track { position: relative; display: flex; gap: 7px; align-items: center; margin-top: 30px; color: var(--dim); font-size: .72rem; }
        .mini-track::before { content: ""; position: absolute; height: 2px; left: 0; right: 0; background: var(--line); }
        .mini-track span { position: relative; z-index: 1; width: 12px; height: 12px; border-radius: 50%; background: var(--bg-soft); border: 2px solid var(--blue); }
        .mini-track span.active { background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 14px var(--cyan); }
        .mini-track em { position: relative; z-index: 1; margin-left: auto; background: var(--panel); font-style: normal; padding-left: 7px; }

        .signal-strip { border-block: 1px solid var(--line); background: rgba(13,17,30,.67); }
        .signal-grid { display: grid; grid-template-columns: 1.2fr repeat(3, 1fr); }
        .signal-item { padding: 25px 28px; border-left: 1px solid var(--line); }
        .signal-item:first-child { border-left: 0; }
        .signal-item span { display: block; color: var(--dim); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
        .signal-item strong { display: block; color: var(--text); font-size: 1.14rem; line-height: 1.3; margin-top: 5px; }
        .signal-item strong.cyan { color: var(--cyan); }
        .signal-item strong.lime { color: var(--lime); }

        .intro-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(40px, 7vw, 104px); align-items: start; }
        .intro-visual { position: relative; padding-bottom: 36px; }
        .intro-image {
            min-height: 465px;
            height: 100%;
            object-fit: cover;
            filter: saturate(.82) contrast(1.05);
            clip-path: polygon(0 0, calc(100% - 35px) 0, 100% 35px, 100% 100%, 35px 100%, 0 calc(100% - 35px));
        }
        .image-caption {
            position: absolute;
            right: -25px;
            bottom: 0;
            max-width: 250px;
            padding: 18px 20px;
            border: 1px solid var(--line-strong);
            background: var(--panel);
            box-shadow: var(--shadow);
        }
        .image-caption b { display: block; font-size: .82rem; color: var(--cyan); letter-spacing: .08em; }
        .image-caption span { display: block; color: var(--muted); font-size: .8rem; margin-top: 5px; }
        .article-copy h2 {
            margin: 10px 0 19px;
            font-size: clamp(1.9rem, 3vw, 3rem);
            line-height: 1.13;
            letter-spacing: -.04em;
        }
        .article-copy p { color: var(--muted); margin-bottom: 18px; }
        .angle-list { padding: 0; margin: 28px 0 0; list-style: none; }
        .angle-list li { position: relative; padding: 15px 0 15px 28px; color: #d8e1ef; border-bottom: 1px solid var(--line); }
        .angle-list li::before { content: "↗"; position: absolute; left: 0; color: var(--cyan); font-weight: 900; }
        .angle-list b { color: var(--text); }

        .calculation-zone { background: linear-gradient(180deg, rgba(17,24,39,.52), transparent); border-block: 1px solid var(--line); }
        .calc-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 55px; align-items: start; }
        .calc-lead { position: sticky; top: 112px; }
        .calc-lead h2 { font-size: clamp(2rem, 3.6vw, 3.45rem); line-height: 1.06; letter-spacing: -.055em; margin: 10px 0 18px; }
        .calc-lead p { color: var(--muted); max-width: 390px; }
        .formula-note { margin-top: 28px; padding: 17px 18px; border-left: 3px solid var(--lime); background: rgba(204,255,0,.055); color: #d8e1ef; font-size: .91rem; }
        .formula-note b { color: var(--lime); }

        .example-stack { display: grid; gap: 14px; }
        .example-row {
            display: grid;
            grid-template-columns: 112px minmax(0,1fr) 145px;
            gap: 20px;
            align-items: center;
            padding: 24px 25px;
            border: 1px solid var(--line);
            background: rgba(17,24,39,.62);
            transition: transform .22s ease, border-color .22s ease, background .22s ease;
        }
        .example-row:hover { transform: translateX(6px); border-color: rgba(0,240,255,.52); background: var(--panel-light); }
        .example-chip { color: var(--cyan); font-weight: 900; font-size: 1.27rem; line-height: 1; }
        .example-chip small { display: block; color: var(--dim); font-weight: 700; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; margin-top: 8px; }
        .example-main h3 { font-size: 1.05rem; line-height: 1.35; margin: 0 0 5px; }
        .example-main p { color: var(--muted); font-size: .88rem; margin: 0; }
        .outcome { text-align: right; }
        .outcome span { color: var(--dim); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; display: block; }
        .outcome b { display: block; margin-top: 4px; font-size: 1.12rem; }
        .outcome .win { color: var(--lime); }
        .outcome .half { color: #ffcf4d; }
        .outcome .lose { color: var(--danger); }

        .scenario-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 35px; }
        .scenario-head h2 { font-size: clamp(2rem, 3.7vw, 3.45rem); line-height: 1.06; letter-spacing: -.055em; margin: 10px 0 0; max-width: 660px; }
        .scenario-head p { color: var(--muted); max-width: 340px; margin: 0; }
        .scenario-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
        .scenario-card {
            position: relative;
            min-height: 300px;
            overflow: hidden;
            border: 1px solid var(--line);
            background: var(--panel);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }
        .scenario-card:hover { transform: translateY(-7px); border-color: var(--cyan); box-shadow: 0 16px 35px rgba(0,240,255,.11); }
        .scenario-card:first-child { grid-column: span 7; }
        .scenario-card:last-child { grid-column: span 5; }
        .scenario-photo { width: 100%; height: 100%; min-height: 300px; object-fit: cover; opacity: .46; transition: opacity .25s ease, transform .4s ease; }
        .scenario-card:hover .scenario-photo { opacity: .58; transform: scale(1.04); }
        .scenario-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: end; padding: 28px; background: linear-gradient(0deg, rgba(8,9,15,.98) 3%, rgba(8,9,15,.37) 70%, transparent); }
        .scenario-number { color: var(--lime); font-size: .74rem; font-weight: 900; letter-spacing: .16em; }
        .scenario-overlay h3 { font-size: clamp(1.3rem, 2vw, 1.8rem); margin: 9px 0 8px; line-height: 1.14; }
        .scenario-overlay p { color: #c8d2e1; margin: 0; max-width: 540px; font-size: .92rem; }
        .scenario-badge {
            position: absolute;
            top: 19px;
            right: 19px;
            color: #051016;
            background: var(--cyan);
            padding: 6px 9px;
            font-size: .68rem;
            line-height: 1;
            font-weight: 900;
            letter-spacing: .08em;
            text-transform: uppercase;
            clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
        }

        .tool-panel {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            border: 1px solid var(--line-strong);
            background: linear-gradient(135deg, rgba(34,102,255,.13), rgba(0,240,255,.045) 48%, rgba(17,24,39,.9));
            box-shadow: var(--shadow);
        }
        .tool-copy { padding: clamp(30px, 5vw, 62px); }
        .tool-copy h2 { font-size: clamp(1.9rem, 3.4vw, 3.2rem); line-height: 1.08; letter-spacing: -.05em; margin: 10px 0 17px; }
        .tool-copy p { color: var(--muted); max-width: 520px; }
        .tool-mini-list { display: grid; gap: 12px; margin-top: 28px; }
        .tool-mini-list div { color: #d8e1ef; font-size: .92rem; }
        .tool-mini-list span { color: var(--lime); margin-right: 9px; }
        .tool-form { padding: clamp(28px, 4vw, 50px); border-left: 1px solid var(--line); background: rgba(8,9,15,.34); }
        .tool-form label { display: block; color: var(--muted); font-size: .77rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; margin-bottom: 8px; }
        .tool-form input {
            width: 100%;
            color: var(--text);
            background: rgba(8,9,15,.72);
            border: 1px solid var(--line);
            padding: 13px 14px;
            outline: none;
            transition: border .2s, box-shadow .2s;
        }
        .tool-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.11); }
        .tool-form .field { margin-bottom: 18px; }
        .tool-form .btn-primary { width: 100%; margin-top: 5px; }
        .form-note { color: var(--dim); font-size: .76rem; margin: 15px 0 0; }

        .faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(40px, 8vw, 120px); }
        .faq-intro h2 { font-size: clamp(2rem, 3.5vw, 3.25rem); line-height: 1.08; letter-spacing: -.05em; margin: 10px 0 17px; }
        .faq-intro p { color: var(--muted); }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            border: 0;
            color: var(--text);
            background: none;
            text-align: left;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding: 23px 0;
            font-size: 1.04rem;
            font-weight: 750;
        }
        .faq-question span:last-child { color: var(--cyan); font-size: 1.45rem; line-height: 1; transition: transform .22s; }
        .faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease; }
        .faq-answer > div { overflow: hidden; }
        .faq-answer p { color: var(--muted); margin: 0; padding: 0 38px 0 0; }
        .faq-item.open .faq-answer { grid-template-rows: 1fr; }
        .faq-item.open .faq-answer p { padding-bottom: 24px; }
        .faq-item.open .faq-question span:last-child { transform: rotate(45deg); color: var(--lime); }

        .final-cta { padding: 0 0 104px; }
        .cta-surface {
            position: relative;
            overflow: hidden;
            padding: clamp(40px, 7vw, 80px);
            text-align: center;
            border: 1px solid rgba(0,240,255,.42);
            background:
                linear-gradient(90deg, rgba(8,9,15,.96), rgba(8,9,15,.7)),
                url('/assets/images/backpic/back-2.jpg') center / cover;
            box-shadow: var(--shadow);
        }
        .cta-surface::before {
            content: "";
            position: absolute;
            width: 310px;
            height: 310px;
            left: -100px;
            bottom: -145px;
            border-radius: 50%;
            background: rgba(0,240,255,.13);
            filter: blur(25px);
        }
        .cta-surface > * { position: relative; }
        .cta-surface h2 { font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.05; letter-spacing: -.06em; max-width: 720px; margin: 12px auto 17px; }
        .cta-surface p { color: #d8e1ef; max-width: 620px; margin: 0 auto; }
        .cta-surface .hero-actions { justify-content: center; }

        footer { border-top: 1px solid var(--line); background: #06070b; padding: 72px 0 25px; }
        .footer-grid { display: grid; grid-template-columns: 1.55fr 1fr 1fr; gap: 58px; }
        .footer-copy { color: var(--muted); font-size: .88rem; max-width: 410px; margin: 21px 0 0; }
        .footer-col h3 { color: var(--text); font-size: .87rem; margin: 2px 0 16px; }
        .footer-col a { display: block; color: var(--muted); font-size: .84rem; margin: 10px 0; transition: color .2s, transform .2s; }
        .footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
        .responsible { display: inline-block; margin-top: 10px; color: var(--lime); font-size: .75rem; font-weight: 800; }
        .footer-bottom { border-top: 1px solid var(--line); margin-top: 55px; padding-top: 20px; display: flex; justify-content: space-between; gap: 20px; color: var(--dim); font-size: .76rem; }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--cyan);
            background: rgba(0,0,0,.65);
            box-shadow: 0 0 18px rgba(0,240,255,.5);
            clip-path: polygon(16% 0, 100% 0, 84% 100%, 0 100%);
            opacity: .68;
            transition: transform .2s, opacity .2s, box-shadow .2s, color .2s, border-color .2s;
            animation: fabGlow 2.2s ease-in-out infinite;
        }
        .fab::after {
            content: "MỚI";
            position: absolute;
            top: 5px;
            right: 7px;
            color: var(--lime);
            font-size: .48rem;
            font-weight: 900;
            letter-spacing: .04em;
            animation: pulse 1.1s infinite;
        }
        .fab:hover { opacity: 1; transform: scale(1.1); color: var(--lime); border-color: var(--lime); box-shadow: 0 0 31px rgba(0,240,255,.8); }
        .fab:active { transform: scale(.95); border-color: #ff007f; }
        .fab svg { width: 26px; height: 26px; animation: flicker 4s infinite; }
        @keyframes fabGlow { 50% { box-shadow: 0 0 30px rgba(0,240,255,.72); } }
        @keyframes flicker { 0%, 95%, 100% { opacity: 1; } 96% { opacity: .42; } 98% { opacity: .82; } }

        @media (max-width: 1024px) {
            .nav-wrap { gap: 17px; }
            .desktop-nav .nav-link { padding-inline: 8px; font-size: .81rem; }
            .hero-layout { gap: 45px; }
            .signal-item { padding: 22px 19px; }
            .footer-grid { gap: 35px; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 32px)); }
            .section { padding: 76px 0; }
            .desktop-nav { display: none; }
            .nav-wrap { min-height: 68px; gap: 12px; }
            .nav-actions { margin-left: auto; gap: 3px; }
            .login-link { display: none; }
            .nav-cta { font-size: .8rem; padding: 10px 12px; }
            .menu-toggle { display: block; }
            .mobile-panel { padding-bottom: 13px; }
            .mobile-panel.open { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
            .mobile-panel .nav-link { font-size: .8rem; padding: 10px; }
            .category-hero { padding: 116px 0 58px; min-height: auto; }
            .hero-layout { grid-template-columns: 1fr; }
            .vertical-board { width: min(320px, 100%); min-height: 390px; margin-left: auto; }
            .score-core { padding: 37px 0 22px; }
            .score-big { font-size: 4.45rem; }
            .signal-grid { grid-template-columns: 1fr 1fr; }
            .signal-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
            .signal-item:nth-child(4) { border-top: 1px solid var(--line); }
            .intro-grid, .calc-layout, .tool-panel, .faq-layout { grid-template-columns: 1fr; }
            .calc-lead { position: static; }
            .intro-image { min-height: 370px; }
            .image-caption { right: 0; }
            .scenario-card:first-child, .scenario-card:last-child { grid-column: span 12; }
            .tool-form { border-left: 0; border-top: 1px solid var(--line); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid > div:first-child { grid-column: span 2; }
        }
        @media (max-width: 520px) {
            body { font-size: 15px; }
            .container { width: calc(100% - 28px); }
            .brand-copy strong { font-size: .78rem; }
            .brand-copy span { font-size: .56rem; }
            .brand-mark { width: 30px; height: 30px; }
            .nav-cta { padding: 9px 9px; font-size: .72rem; }
            .menu-toggle { width: 38px; height: 38px;
            font-size: 1.2rem;
        }
        .hero-copy h1 { font-size: clamp(2.2rem, 11vw, 3.45rem); }
        .hero-actions { flex-direction: column; align-items: stretch; }
        .hero-actions a { width: 100%; }
        .hero-points { display: grid; gap: 8px; }
        .vertical-board { min-height: 360px; padding: 14px; }
        .score-big { font-size: 3.8rem; }
        .signal-grid { grid-template-columns: 1fr; }
        .signal-item, .signal-item:nth-child(3), .signal-item:nth-child(4) {
            border-left: 0;
            border-top: 1px solid var(--line);
        }
        .signal-item:first-child { border-top: 0; }
        .intro-image { min-height: 275px; }
        .image-caption { position: relative; right: auto; margin: -25px 14px 0; }
        .example-row { grid-template-columns: 1fr; gap: 10px; padding: 20px; }
        .outcome { text-align: left; padding-top: 10px; border-top: 1px solid var(--line); }
        .scenario-grid { display: grid; gap: 14px; }
        .scenario-card, .scenario-card:first-child, .scenario-card:last-child { min-height: 285px; grid-column: span 12; }
        .scenario-photo { min-height: 285px; }
        .scenario-overlay { padding: 20px; }
        .tool-copy, .tool-form { padding: 27px 21px; }
        .faq-question { font-size: .96rem; padding: 19px 0; }
        .faq-answer p { padding-right: 0; }
        .cta-surface { padding: 38px 21px; }
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .footer-grid > div:first-child { grid-column: auto; }
        .footer-bottom { flex-direction: column; gap: 8px; margin-top: 36px; }
        .fab { left: 14px; bottom: 78px; width: 52px; height: 52px; }
    }

/* roulang page: category1 */
:root {
            --bg: #08090f;
            --bg-soft: #0d111e;
            --panel: #111827;
            --panel-light: #151e31;
            --panel-deep: #0b101b;
            --line: rgba(0, 240, 255, .16);
            --line-strong: rgba(0, 82, 255, .55);
            --blue: #2266ff;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --text: #f8fafc;
            --muted: #aab6ca;
            --dim: #71809b;
            --danger: #ff5577;
            --warning: #ffc857;
            --success: #ccff00;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            background:
                radial-gradient(circle at 82% 7%, rgba(0, 240, 255, .07), transparent 27rem),
                radial-gradient(circle at 12% 42%, rgba(34, 102, 255, .08), transparent 30rem),
                var(--bg);
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: -1;
            opacity: .22;
            background-image:
                linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
            background-size: 46px 46px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
        }

        a { color: inherit; text-decoration: none; }
        img { display: block; max-width: 100%; }
        button, input, select { font: inherit; }
        button { cursor: pointer; }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
            outline: 3px solid rgba(0, 240, 255, .65);
            outline-offset: 3px;
        }

        .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
        .section { padding: 104px 0; position: relative; }
        .eyebrow {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 850;
            letter-spacing: .17em;
            text-transform: uppercase;
        }

        .section-heading { max-width: 700px; margin-bottom: 42px; }
        .section-heading h2 {
            margin: 10px 0 0;
            color: var(--text);
            font-size: clamp(1.9rem, 3.3vw, 3.1rem);
            line-height: 1.12;
            letter-spacing: -.045em;
        }

        .section-heading p { color: var(--muted); margin: 17px 0 0; max-width: 640px; }
        .section-heading.split {
            max-width: none;
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 32px;
        }
        .section-heading.split p { margin: 0; max-width: 430px; }

        .site-header {
            position: fixed;
            z-index: 40;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, .83);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, .12);
        }

        .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 34px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--bg);
            background: var(--lime);
            font-weight: 950;
            clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
        }
        .brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
        .brand-copy strong { font-size: .92rem; letter-spacing: .04em; }
        .brand-copy span {
            color: var(--cyan);
            font-size: .67rem;
            margin-top: 4px;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .desktop-nav { display: flex; align-items: center; gap: 5px; flex: 1; }
        .nav-link {
            color: var(--muted);
            padding: 9px 13px;
            border-radius: 9px;
            font-size: .88rem;
            white-space: nowrap;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }
        .nav-link:hover { color: var(--text); background: rgba(0, 240, 255, .08); transform: translateY(-1px); }
        .nav-link.active { color: var(--cyan); background: rgba(0, 240, 255, .1); }

        .nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
        .login-link {
            color: var(--muted);
            font-size: .88rem;
            padding: 9px 5px;
            transition: color .2s ease;
        }
        .login-link:hover { color: var(--cyan); }
        .nav-cta, .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            color: #03101a;
            background: var(--cyan);
            font-weight: 850;
            border: 1px solid var(--cyan);
            padding: 11px 17px;
            clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
            transition: transform .2s, box-shadow .2s, background .2s;
        }
        .nav-cta:hover, .btn-primary:hover {
            background: var(--lime);
            box-shadow: 0 0 26px rgba(0, 240, 255, .28);
            transform: translateY(-2px);
        }
        .nav-cta:active, .btn-primary:active { transform: translateY(1px) scale(.98); }

        .menu-toggle {
            display: none;
            color: var(--cyan);
            background: transparent;
            border: 1px solid var(--line);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 1.3rem;
        }
        .mobile-panel {
            display: none;
            padding: 0 0 16px;
            grid-template-columns: 1fr;
            gap: 4px;
        }
        .mobile-panel.open { display: grid; }
        .mobile-panel .nav-link { border: 1px solid transparent; }
        .mobile-panel .nav-link.active { border-color: var(--line); }

        .hero {
            position: relative;
            overflow: hidden;
            min-height: 720px;
            padding: 152px 0 88px;
        }
        .hero::after {
            content: "";
            position: absolute;
            width: 550px;
            height: 550px;
            right: -180px;
            bottom: -190px;
            border: 1px solid rgba(0, 240, 255, .16);
            border-radius: 50%;
            box-shadow: 0 0 0 54px rgba(0, 82, 255, .035), 0 0 0 110px rgba(0, 240, 255, .02);
            pointer-events: none;
        }
        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
            align-items: center;
            gap: 54px;
        }
        .hero-copy { padding: 26px 0 10px; }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 19px;
            color: var(--lime);
            font-size: .75rem;
            font-weight: 800;
            letter-spacing: .11em;
            text-transform: uppercase;
        }
        .live-dot {
            width: 8px;
            height: 8px;
            background: var(--lime);
            border-radius: 50%;
            box-shadow: 0 0 0 5px rgba(204, 255, 0, .1), 0 0 16px var(--lime);
            animation: pulse-dot 1.8s infinite;
        }
        .hero h1 {
            max-width: 620px;
            margin: 0;
            font-size: clamp(2.65rem, 5vw, 5rem);
            line-height: .98;
            letter-spacing: -.068em;
            font-weight: 900;
        }
        .hero h1 em { color: var(--cyan); font-style: normal; }
        .hero-intro {
            max-width: 555px;
            margin: 25px 0 0;
            color: var(--muted);
            font-size: 1.04rem;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 11px 17px;
            color: var(--text);
            border: 1px solid var(--line-strong);
            background: rgba(17, 24, 39, .56);
            font-weight: 750;
            transition: border-color .2s, background .2s, transform .2s;
        }
        .btn-secondary:hover { border-color: var(--cyan); background: rgba(0, 240, 255, .08); transform: translateY(-2px); }

        .hero-metrics { display: flex; gap: 27px; margin-top: 43px; }
        .metric { border-left: 2px solid var(--cyan); padding-left: 12px; }
        .metric strong { display: block; color: var(--text); font-size: 1.2rem; line-height: 1.1; }
        .metric span { display: block; margin-top: 5px; color: var(--dim); font-size: .77rem; }

        .hero-media {
            position: relative;
            min-height: 490px;
            transform: translateY(20px);
        }
        .hero-image-wrap {
            position: absolute;
            inset: 0 0 0 9%;
            overflow: hidden;
            clip-path: polygon(9% 0, 100% 0, 92% 100%, 0 100%);
            border: 1px solid rgba(0, 240, 255, .34);
            background: var(--panel);
        }
        .hero-image-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8,9,15,.18), rgba(8,9,15,.08) 45%, rgba(0,82,255,.19));
        }
        .hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; opacity: .79; }
        .formula-card {
            position: absolute;
            z-index: 2;
            left: 0;
            bottom: 23px;
            width: min(330px, 84%);
            padding: 24px;
            background: rgba(11, 16, 27, .91);
            backdrop-filter: blur(16px);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
        }
        .formula-card .small-label { color: var(--cyan); font-size: .68rem; letter-spacing: .13em; font-weight: 800; text-transform: uppercase; }
        .formula { display: flex; align-items: center; gap: 8px; margin: 11px 0 8px; }
        .formula b { color: var(--lime); font-size: 1.45rem; }
        .formula span { color: var(--muted); }
        .formula-card p { margin: 0; color: var(--muted); font-size: .85rem; line-height: 1.5; }

        .signal-strip {
            position: relative;
            z-index: 2;
            margin-top: -1px;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background: rgba(13, 17, 30, .72);
        }
        .signal-inner { display: flex; align-items: center; min-height: 74px; gap: 25px; }
        .signal-title { color: var(--cyan); font-size: .75rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; white-space: nowrap; }
        .signal-items { display: flex; align-items: center; gap: 30px; overflow-x: auto; scrollbar-width: thin; }
        .signal-item { color: var(--muted); font-size: .87rem; white-space: nowrap; }
        .signal-item b { color: var(--text); margin-right: 7px; }

        .dashboard { display: grid; grid-template-columns: 1.12fr .88fr; gap: 24px; }
        .board-panel {
            position: relative;
            overflow: hidden;
            padding: 34px;
            border: 1px solid var(--line);
            background: linear-gradient(145deg, rgba(21,30,49,.92), rgba(11,16,27,.92));
        }
        .board-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 85px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 18px var(--cyan);
        }
        .board-panel h3 { margin: 0; font-size: 1.34rem; letter-spacing: -.025em; }
        .board-panel > p { color: var(--muted); margin: 10px 0 26px; }

        .split-rule { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 15px; margin-top: 24px; }
        .split-half {
            padding: 21px 18px;
            border: 1px solid rgba(0,240,255,.14);
            background: rgba(8,9,15,.4);
        }
        .split-half strong { display: block; color: var(--cyan); font-size: 1.38rem; line-height: 1; }
        .split-half span { display: block; color: var(--dim); margin-top: 6px; font-size: .76rem; }
        .plus-symbol { color: var(--lime); font-size: 1.35rem; font-weight: 900; }

        .outcome-list { display: grid; gap: 10px; }
        .outcome-row {
            display: grid;
            grid-template-columns: 90px 1fr auto;
            align-items: center;
            gap: 13px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(170,182,202,.11);
        }
        .outcome-row:last-child { border-bottom: 0; }
        .outcome-row span { color: var(--muted); font-size: .86rem; }
        .outcome-row b { font-size: .93rem; }
        .status { padding: 4px 9px; font-size: .69rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
        .status.win { background: rgba(204,255,0,.12); color: var(--lime); border: 1px solid rgba(204,255,0,.2); }
        .status.lose { background: rgba(255,85,119,.1); color: var(--danger); border: 1px solid rgba(255,85,119,.2); }
        .status.half { background: rgba(255,200,87,.1); color: var(--warning); border: 1px solid rgba(255,200,87,.22); }

        .matrix { display: grid; grid-template-columns: 1.05fr .95fr; gap: 65px; align-items: start; }
        .reading-path { border-left: 1px solid var(--line-strong); }
        .path-item { position: relative; padding: 0 0 35px 32px; }
        .path-item:last-child { padding-bottom: 0; }
        .path-item::before {
            content: "";
            position: absolute;
            left: -7px;
            top: 5px;
            width: 13px;
            height: 13px;
            background: var(--bg);
            border: 2px solid var(--cyan);
            box-shadow: 0 0 14px rgba(0,240,255,.48);
        }
        .path-item small { color: var(--cyan); font-size: .7rem; letter-spacing: .11em; font-weight: 850; text-transform: uppercase; }
        .path-item h3 { margin: 5px 0 8px; font-size: 1.18rem; }
        .path-item p { margin: 0; color: var(--muted); max-width: 530px; }

        .visual-note {
            position: relative;
            min-height: 530px;
            overflow: hidden;
            border: 1px solid var(--line);
            background: var(--panel-deep);
        }
        .visual-note img { width: 100%; height: 100%; object-fit: cover; opacity: .48; }
        .visual-note::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,.08), rgba(8,9,15,.95));
        }
        .note-content { position: absolute; z-index: 1; inset: auto 28px 28px; }
        .note-content h3 { margin: 0; font-size: 1.55rem; line-height: 1.15; }
        .note-content p { color: var(--muted); margin: 12px 0 0; }
        .note-chip {
            display: inline-block;
            margin-bottom: 14px;
            padding: 5px 10px;
            border: 1px solid rgba(204,255,0,.34);
            color: var(--lime);
            background: rgba(8,9,15,.64);
            font-size: .7rem;
            font-weight: 800;
            letter-spacing: .09em;
            text-transform: uppercase;
        }

        .compare-section { background: linear-gradient(90deg, transparent, rgba(34,102,255,.06), transparent); }
        .comparison-shell { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
        .compare-row {
            display: grid;
            grid-template-columns: 1.05fr 1fr 1fr;
            gap: 22px;
            align-items: center;
            padding: 24px 20px;
            border-bottom: 1px solid rgba(170,182,202,.1);
        }
        .compare-row:last-child { border-bottom: 0; }
        .compare-row.head { padding-top: 17px; padding-bottom: 17px; background: rgba(0,240,255,.035); }
        .compare-row.head div { color: var(--cyan); font-size: .72rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
        .compare-row h3 { margin: 0; font-size: 1.03rem; }
        .compare-row p { margin: 0; color: var(--muted); font-size: .9rem; }
        .compare-row .result-good { color: var(--lime); font-weight: 800; }
        .compare-row .result-warn { color: var(--warning); font-weight: 800; }
        .compare-row .result-bad { color: var(--danger); font-weight: 800; }

        .calculator-wrap {
            display: grid;
            grid-template-columns: 1fr .94fr;
            gap: 0;
            border: 1px solid var(--line);
            background: var(--panel-deep);
            box-shadow: var(--shadow);
        }
        .calculator-copy {
            padding: 45px;
            background:
                linear-gradient(145deg, rgba(34,102,255,.13), transparent 60%),
                var(--panel-light);
        }
        .calculator-copy h2 { margin: 10px 0 0; font-size: clamp(1.8rem, 3vw, 2.65rem); line-height: 1.12; letter-spacing: -.04em; }
        .calculator-copy p { color: var(--muted); margin: 16px 0 0; max-width: 470px; }
        .mini-rules { display: grid; gap: 12px; margin-top: 30px; }
        .mini-rule { display: flex; gap: 11px; align-items: flex-start; color: var(--muted); font-size: .89rem; }
        .mini-rule i { color: var(--lime); font-style: normal; font-weight: 900; }

        .calculator { padding: 38px; }
        .field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
        .field { display: grid; gap: 7px; }
        .field label { color: var(--muted); font-size: .78rem; font-weight: 750; }
        .field input, .field select {
            width: 100%;
            min-height: 48px;
            padding: 0 13px;
            border: 1px solid rgba(0,240,255,.2);
            border-radius: 0;
            color: var(--text);
            background: rgba(8,9,15,.68);
            transition: border-color .2s, box-shadow .2s;
        }
        .field input:focus, .field select:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.1); outline: none; }
        .field select option { color: #111827; }
        .calc-submit { width: 100%; margin-top: 19px; border: 0; }
        .calc-result {
            margin-top: 18px;
            padding: 17px;
            border-left: 3px solid var(--cyan);
            background: rgba(0,240,255,.055);
        }
        .calc-result small { display: block; color: var(--muted); font-size: .74rem; }
        .calc-result strong { display: block; color: var(--text); margin-top: 4px; font-size: 1.06rem; }
        .calc-result span { display: block; color: var(--dim); margin-top: 5px; font-size: .8rem; }

        .faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; align-items: start; }
        .faq-side { position: sticky; top: 106px; }
        .faq-side h2 { margin: 10px 0 0; font-size: clamp(1.9rem, 3vw, 3rem); line-height: 1.1; letter-spacing: -.045em; }
        .faq-side p { color: var(--muted); margin: 18px 0 0; }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 0;
            color: var(--text);
            text-align: left;
            background: transparent;
            border: 0;
            font-weight: 780;
        }
        .faq-icon {
            flex: 0 0 auto;
            display: grid;
            place-items: center;
            width: 27px;
            height: 27px;
            color: var(--cyan);
            border: 1px solid var(--line);
            transition: transform .2s, background .2s;
        }
        .faq-answer { display: none; padding: 0 42px 22px 0; color: var(--muted); }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-icon { transform: rotate(45deg); background: rgba(0,240,255,.1); }

        .cta-section { padding-top: 42px; padding-bottom: 104px; }
        .cta-box {
            position: relative;
            overflow: hidden;
            padding: 68px 55px;
            text-align: center;
            border: 1px solid var(--line-strong);
            background:
                radial-gradient(circle at 50% 0%, rgba(0,240,255,.16), transparent 40%),
                linear-gradient(120deg, rgba(34,102,255,.15), rgba(13,17,30,.92));
        }
        .cta-box::before, .cta-box::after {
            content: "";
            position: absolute;
            width: 110px;
            height: 110px;
            border: 1px solid rgba(0,240,255,.23);
            transform: rotate(45deg);
        }
        .cta-box::before { top: -58px; left: -58px; }
        .cta-box::after { right: -58px; bottom: -58px; }
        .cta-box h2 { position: relative; margin: 12px auto 0; max-width: 750px; font-size: clamp(2rem, 4vw, 3.35rem); line-height: 1.08; letter-spacing: -.05em; }
        .cta-box p { position: relative; max-width: 625px; margin: 19px auto 0; color: var(--muted); }
        .cta-box .hero-actions { position: relative; justify-content: center; margin-top: 30px; }

        footer {
            padding: 65px 0 25px;
            border-top: 1px solid var(--line);
            background: rgba(5, 7, 12, .72);
        }
        .footer-grid { display: grid; grid-template-columns: 1.35fr .8fr .8fr; gap: 56px; }
        .footer-copy { max-width: 405px; margin: 18px 0 0; color: var(--muted); font-size: .88rem; }
        .footer-col { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
        .footer-col h3 { margin: 0 0 7px; color: var(--text); font-size: .87rem; }
        .footer-col a { color: var(--muted); font-size: .85rem; transition: color .2s, transform .2s; }
        .footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
        .responsible {
            margin-top: 8px;
            color: var(--warning);
            font-size: .73rem;
            font-weight: 700;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 25px;
            margin-top: 50px;
            padding-top: 20px;
            border-top: 1px solid rgba(170,182,202,.12);
            color: var(--dim);
            font-size: .75rem;
        }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 35;
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            background: rgba(8,9,15,.78);
            border: 1px solid transparent;
            border-radius: 16px;
            background-image: linear-gradient(var(--bg), var(--bg)), linear-gradient(135deg, var(--cyan), var(--blue), var(--lime));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0,240,255,.38);
            opacity: .72;
            transition: transform .25s, opacity .25s, box-shadow .25s;
            animation: fab-breathe 2.6s ease-in-out infinite;
        }
        .fab::after {
            content: "MỚI";
            position: absolute;
            top: -7px;
            right: -10px;
            padding: 2px 5px;
            color: #fff;
            background: var(--danger);
            font-size: .54rem;
            font-weight: 900;
            letter-spacing: .05em;
            animation: blink 1.3s infinite;
        }
        .fab:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 0 30px rgba(0,240,255,.7); }
        .fab:active { transform: scale(.95); }
        .fab span { font-size: 1.42rem; filter: drop-shadow(0 0 7px var(--cyan)); }

        @keyframes pulse-dot {
            50% { opacity: .45; box-shadow: 0 0 0 8px rgba(204,255,0,.02), 0 0 20px var(--lime); }
        }
        @keyframes fab-breathe {
            50% { transform: translateY(-5px); opacity: 1; }
        }
        @keyframes blink {
            50% { opacity: .35; }
        }

        @media (max-width: 1100px) {
            .nav-wrap { gap: 18px; }
            .desktop-nav .nav-link { padding-inline: 8px; font-size: .82rem; }
            .hero-grid { gap: 32px; }
            .matrix { gap: 40px; }
            .faq-layout { gap: 45px; }
        }

        @media (max-width: 860px) {
            .container { width: min(var(--container), calc(100% - 36px)); }
            .desktop-nav { display: none; }
            .menu-toggle { display: grid; place-items: center; margin-left: 2px; }
            .nav-wrap { min-height: 68px; gap: 12px; }
            .nav-actions { gap: 8px; }
            .login-link { display: none; }
            .nav-cta { padding: 9px 12px; font-size: .8rem; }
            .hero { min-height: auto; padding: 124px 0 64px; }
            .hero-grid, .dashboard, .matrix, .calculator-wrap, .faq-layout { grid-template-columns: 1fr; }
            .hero-media { min-height: 420px; transform: none; }
            .hero-copy { padding-top: 0; }
            .hero h1 { max-width: 720px; }
            .dashboard { gap: 18px; }
            .matrix { gap: 43px; }
            .visual-note { min-height: 380px; }
            .faq-side { position: static; }
            .section { padding: 76px 0; }
            .section-heading.split { display: block; }
            .section-heading.split p { margin-top: 17px; }
            .footer-grid { grid-template-columns: 1.2fr 1fr; gap: 36px; }
            .footer-grid > :first-child { grid-column: span 2; }
        }

        @media (max-width: 560px) {
            body { font-size: 15px; }
            .container { width: min(var(--container), calc(100% - 28px)); }
            .brand-copy strong { font-size: .82rem; }
            .brand-copy span { font-size: .58rem; }
            .brand-mark { width: 31px; height: 31px; }
            .nav-cta { padding: 9px 10px; font-size: .74rem; }
            .menu-toggle { width: 39px; height: 39px; }
            .hero { padding-top: 112px; }
            .hero h1 { font-size: clamp(2.35rem, 12vw, 3.35rem); }
            .hero-intro { font-size: .96rem; }
            .hero-actions { display: grid; grid-template-columns: 1fr; }
            .hero-actions a { width: 100%; }
            .hero-metrics { gap: 14px; justify-content: space-between; }
            .metric { padding-left: 9px; }
            .metric strong { font-size: 1rem; }
            .metric span { font-size: .68rem; }
            .hero-media { min-height: 340px; margin-top: 5px; }
            .hero-image-wrap { inset-left: 3%; }
            .formula-card { left: 0; bottom: 10px; padding: 17px; }
            .signal-inner { min-height: 63px; gap: 15px; }
            .signal-items { gap: 21px; }
            .board-panel { padding: 24px 20px; }
            .split-rule { gap: 7px; }
            .split-half { padding: 16px 11px; }
            .outcome-row { grid-template-columns: 77px 1fr auto; gap: 8px; }
            .outcome-row span, .outcome-row b { font-size: .78rem; }
            .status { padding: 3px 6px; font-size: .6rem; }
            .compare-row { grid-template-columns: 1fr 1fr; gap: 10px 16px; padding: 19px 4px; }
            .compare-row > :first-child { grid-column: span 2; }
            .compare-row.head { display: none; }
            .compare-row p::before { display: block; margin-bottom: 4px; color: var(--dim); font-size: .65rem; letter-spacing: .07em; text-transform: uppercase; }
            .compare-row p:nth-child(2)::before { content: "Tài 2.25"; }
            .compare-row p:nth-child(3)::before { content: "Xỉu 2.25"; }
            .calculator-copy, .calculator { padding: 29px 21px; }
            .field-grid { grid-template-columns: 1fr; }
            .faq-question { font-size: .94rem; padding: 19px 0; }
            .cta-box { padding: 48px 22px; }
            .footer-grid { grid-template-columns: 1fr; gap: 31px; }
            .footer-grid > :first-child { grid-column: auto; }
            .footer-bottom { flex-direction: column; gap: 6px; margin-top: 35px; }
            .fab { left: 14px; bottom: 78px; width: 52px; height: 52px; }
        }