/* roulang page: index */
:root {
            --bg: #0B111E;
            --card: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.12);
            --brand: #18D6C3;
            --brand-light: #7CFFEB;
            --amber: #F5A524;
            --text-main: #F1F5FB;
            --text-second: #A6B2C7;
            --text-muted: #71829B;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-card: 0 20px 45px rgba(0, 0, 0, 0.35);
            --container: 1200px;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            background-color: var(--bg);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
            line-height: 1.75;
            margin: 0;
        }
        a { color: var(--brand-light); text-decoration: none; transition: color 0.2s ease; }
        img { max-width: 100%; border-radius: var(--radius-md); }
        button, input { font-family: inherit; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
        .section-space { padding: 96px 0; }
        .section-title { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
        .section-sub { color: var(--text-second); margin-bottom: 40px; max-width: 620px; }
        .glass-panel {
            background: var(--card);
            border: 1px solid var(--card-border);
            backdrop-filter: blur(20px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(20px);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(24, 214, 195, 0.4);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 24px rgba(24, 214, 195, 0.1);
        }
        .brand-gradient {
            background: linear-gradient(135deg, #18D6C3 0%, #0FB5A6 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #18D6C3, #0EC0AE);
            color: #062320;
            font-weight: 700;
            border-radius: 999px;
            border: none;
            padding: 0 28px;
            height: 48px;
            font-size: 15px;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 0 22px rgba(24, 214, 195, 0.22);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(24, 214, 195, 0.45); }
        .btn-primary:active { transform: scale(0.97); }
        .btn-primary:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: #fff;
            border-radius: 999px;
            padding: 0 24px;
            height: 48px;
            font-size: 15px;
            transition: all .2s ease;
        }
        .btn-secondary:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-2px); }
        .btn-secondary:active { transform: scale(0.97); }
        .btn-secondary:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 0;
            transition: color .2s;
        }
        .btn-ghost:hover { color: var(--brand-light); }
        .btn-ghost:hover svg { transform: translateX(4px); }
        .btn-ghost svg { transition: transform .2s ease; }
        .badge {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(24, 214, 195, 0.12);
            color: var(--brand-light);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .3px;
        }
        .badge-amber {
            background: rgba(245, 165, 36, 0.12);
            color: #FFC76B;
        }
        .form-input {
            width: 100%;
            height: 48px;
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            background: rgba(0, 0, 0, 0.22);
            padding: 0 16px;
            color: var(--text-main);
            font-size: 15px;
            transition: border-color .2s, box-shadow .2s;
        }
        .form-input::placeholder { color: var(--text-muted); }
        .form-input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(24, 214, 195, 0.15), 0 0 18px rgba(24, 214, 195, 0.1); }
        .form-input:focus-visible { outline: none; border-color: var(--brand); }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 17, 30, 0.76);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
        .logo-text { font-weight: 800; font-size: 20px; letter-spacing: .5px; white-space: nowrap; color: #fff; display: flex; align-items: center; gap: 12px; }
        .logo-mark {
            width: 34px; height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at center, rgba(24,214,195,0.3), rgba(24,214,195,0.05));
            border: 1px solid rgba(24,214,195,0.4);
            display: flex; align-items: center; justify-content: center;
        }
        .logo-mark svg { width: 18px; height: 18px; stroke: var(--brand-light); }
        .header-search { flex: 1; max-width: 560px; display: flex; align-items: center; background: rgba(0, 0, 0, 0.24); border: 1px solid rgba(255, 255, 255, 0.14); border-radius: 999px; height: 44px; padding: 0 6px 0 14px; }
        .header-search:focus-within { border-color: rgba(24, 214, 195, 0.8); box-shadow: 0 0 0 3px rgba(24, 214, 195, 0.12); }
        .header-search input { flex: 1; background: transparent; border: none; outline: none; color: #fff; font-size: 14px; }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search-btn { background: var(--brand); color: #062320; border-radius: 999px; border: none; height: 32px; padding: 0 16px; font-weight: 700; font-size: 13px; cursor: pointer; transition: background .2s; }
        .header-search-btn:hover { background: var(--brand-light); }
        .header-nav { display: flex; align-items: center; gap: 12px; }
        .header-nav a.nav-link { color: var(--text-second); font-size: 14px; font-weight: 500; padding: 6px 10px; border-radius: 999px; transition: all .2s; }
        .header-nav a.nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .header-nav a.nav-link.active-nav { color: var(--brand-light); background: rgba(24,214,195,0.12); }
        .login-outline-btn { border: 1px solid rgba(24, 214, 195, 0.6); color: var(--brand-light); background: transparent; border-radius: 999px; height: 36px; padding: 0 16px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all .2s; box-shadow: 0 0 8px rgba(24,214,195,0.2); display: inline-flex; align-items: center; }
        .login-outline-btn:hover { background: rgba(24, 214, 195, 0.12); box-shadow: 0 0 14px rgba(24,214,195,0.45); color: #fff; }
        .mobile-toggle { display: none; background: transparent; border: none; color: #fff; width: 42px; height: 42px; font-size: 24px; cursor: pointer; align-items: center; justify-content: center; border-radius: 10px; }
        .mobile-toggle:hover { background: rgba(255,255,255,0.05); }
        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 99;
            background: rgba(11, 17, 30, 0.96);
            backdrop-filter: blur(22px);
            padding: 90px 30px 30px;
        }
        .mobile-menu.open { display: block; }
        .mobile-menu a { display: block; padding: 14px 0; font-size: 18px; font-weight: 600; color: var(--text-main); border-bottom: 1px solid rgba(255,255,255,0.08); }
        .mobile-menu a:hover { color: var(--brand-light); }
        .hero-wrap { position: relative; padding: 110px 0 110px; overflow: hidden; }
        .hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; opacity: 0.4; z-index: 0; }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, #0B111E 38%, rgba(11, 17, 30, 0.52) 68%, rgba(11, 17, 30, 0.2)), rgba(11,17,30,0.7); z-index: 1; }
        .hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center; }
        .hero-title { font-size: clamp(2.3rem, 4.6vw, 3.6rem); font-weight: 800; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 20px; }
        .hero-title .highlight { background: linear-gradient(135deg, #18D6C3, #7CFFEB); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
        .hero-desc { font-size: 16px; color: var(--text-second); line-height: 2; margin-bottom: 30px; max-width: 520px; }
        .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
        .hero-access-panel { background: rgba(255, 255, 255, 0.06); backdrop-filter: blur(18px); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 20px; padding: 30px; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,0.35); }
        .hero-access-panel::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, transparent, rgba(24,214,195,0.7), transparent); border-radius: 20px 20px 0 0; }
        .hero-access-title { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
        .hero-access-sub { color: var(--text-second); font-size: 13px; margin-bottom: 20px; }
        .hero-access-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 14px; }
        .hero-access-row:last-child { border-bottom: none; }
        .hero-access-label { color: var(--text-second); display: flex; align-items: center; gap: 10px; }
        .hero-access-value { color: #fff; font-weight: 600; }
        .info-badge { display: inline-block; background: rgba(24,214,195,0.1); border: 1px solid rgba(24,214,195,0.2); border-radius: 999px; width: 28px; height: 28px; text-align: center; line-height: 26px; color: var(--brand-light); font-size: 13px; }
        .feature-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; margin-top: 40px; }
        .philosophy-block { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }
        .philosophy-media { position: relative; border-radius: 24px; overflow: hidden; box-shadow: 0 30px 70px rgba(0,0,0,0.4); }
        .philosophy-media img { width: 100%; height: 100%; object-fit: cover; display: block; min-height: 400px; }
        .media-overlay-caption { position: absolute; left: 20px; bottom: 20px; background: rgba(0,0,0,0.65); backdrop-filter: blur(12px); border-radius: 14px; padding: 12px 18px; font-size: 13px; color: #fff; max-width: 80%; }
        .feature-dots { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; margin-top: 28px; }
        .dot-item { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-second); }
        .dot-item svg { flex: 0 0 auto; margin-top: 4px; }
        .dot-item strong { color: #fff; display: block; font-size: 14px; margin-bottom: 2px; }
        .featured-cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 1fr; gap: 20px; }
        .featured-card-lg { grid-column: span 2; grid-row: span 2; }
        .featured-card { padding: 28px; border-radius: 20px; display: flex; flex-direction: column; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); backdrop-filter: blur(14px); position: relative; overflow: hidden; transition: all .3s ease; }
        .featured-card:hover { transform: translateY(-4px); border-color: rgba(24,214,195,0.3); box-shadow: 0 8px 28px rgba(0,0,0,0.3); }
        .featured-card:hover .arrow-link-icon { transform: translateX(4px); }
        .featured-card .card-icon { width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; background: rgba(24,214,195,0.14); }
        .featured-card-lg .card-icon { width: 58px; height: 58px; }
        .featured-card .card-title { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
        .featured-card-lg .card-title { font-size: 20px; }
        .featured-card .card-desc { color: var(--text-second); font-size: 14px; line-height: 1.8; }
        .featured-card-lg .card-desc { font-size: 15px; }
        .arrow-link-icon { transition: transform .2s; margin-left: auto; color: var(--brand-light); }
        .icon-bg-wrap { background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.15; position: absolute; inset: 0; }
        .latest-zone { display: grid; grid-template-columns: 1.7fr 0.9fr; gap: 28px; align-items: start; }
        .post-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
        .post-list li .inner-card { display: flex; gap: 14px; padding: 16px; border-radius: 14px; background: rgba(255,255,255,0.028); border: 1px solid rgba(255,255,255,0.06); transition: background .2s, border-color .2s; }
        .post-list li .inner-card:hover { background: rgba(255,255,255,0.05); border-color: rgba(24,214,195,0.2); }
        .post-thumb { width: 128px; height: 92px; object-fit: cover; border-radius: 10px; flex: 0 0 auto; }
        .post-content { flex: 1; min-width: 0; }
        .post-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 6px; }
        .post-title { font-size: 16px; font-weight: 700; line-height: 1.6; color: #fff; margin-bottom: 6px; transition: color .2s; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
        a:hover .post-title { color: var(--brand-light); }
        .post-desc { font-size: 13px; color: var(--text-second); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; }
        .post-bottom { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-muted); }
        .sidebar-sticky { position: sticky; top: 96px; }
        .trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; margin-top: 32px; }
        .trust-item { padding: 24px 12px; background: rgba(255,255,255,0.02); border-top: 1px solid rgba(255,255,255,0.1); border-bottom: 1px solid rgba(255,255,255,0.1); }
        .trust-icon-wrap { width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 50%; background: rgba(24,214,195,0.1); display: flex; align-items: center; justify-content: center; border: 1px solid rgba(24,214,195,0.2); }
        .trust-icon-wrap svg { width: 27px; height: 27px; stroke: var(--brand-light); }
        .trust-value { font-size: 20px; font-weight: 800; margin-bottom: 2px; }
        .trust-label { color: var(--text-second); font-size: 14px; }
        .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
        .faq-item { background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; padding: 22px 24px; transition: border-color .25s; }
        .faq-item[open] { border-color: rgba(24,214,195,0.35); }
        .faq-question { list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 700; font-size: 16px; color: var(--text-main); padding: 6px 0; }
        .faq-question::-webkit-details-marker { display: none; }
        .faq-question .faq-icon { transition: transform 0.25s; flex: 0 0 22px; height: 22px; color: var(--brand-light); }
        .faq-item[open] .faq-icon { transform: rotate(180deg); }
        .faq-item[open] .faq-question { color: var(--brand-light); }
        .faq-answer { padding-top: 10px; color: var(--text-second); font-size: 15px; line-height: 2; margin-top: 8px; border-top: 1px solid rgba(255,255,255,0.08); }
        .cta-panel { background: linear-gradient(145deg, rgba(12, 20, 36, 0.9), rgba(11, 17, 30, 0.95)); border: 1px solid rgba(24,214,195,0.2); border-radius: 28px; padding: 70px 40px; text-align: center; position: relative; overflow: hidden; }
        .cta-panel::before { content: ''; position: absolute; width: 350px; height: 350px; border-radius: 50%; top: -120px; left: -80px; background: radial-gradient(circle, rgba(24,214,195,0.2), transparent 70%); pointer-events: none; }
        .cta-panel::after { content: ''; position: absolute; width: 300px; height: 300px; right: -60px; bottom: -100px; border-radius: 50%; background: radial-gradient(circle, rgba(245,165,36,0.1), transparent 70%); pointer-events: none; }
        .cta-title { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 18px; position: relative; }
        .cta-desc { color: var(--text-second); max-width: 580px; margin: 0 auto 28px; position: relative; }
        .cta-form { display: flex; max-width: 470px; margin: 0 auto; gap: 12px; position: relative; }
        .cta-form input { flex: 1; }
        .cta-note { font-size: 12px; position: relative; color: var(--text-muted); margin-top: 16px; }
        .site-footer { background: #060B14; border-top: 1px solid rgba(255,255,255,0.05); padding: 54px 0 24px; margin-top: 80px; }
        .footer-grid { display: grid; grid-template-columns: 1.3fr 0.9fr 0.9fr 1.2fr; gap: 44px; margin-bottom: 38px; }
        .footer-logo { font-size: 18px; font-weight: 800; margin-bottom: 12px; color: #fff; }
        .footer-subblock p { color: var(--text-muted); font-size: 14px; max-width: 280px; }
        .footer-heading { font-weight: 700; margin-bottom: 16px; font-size: 15px; color: #fff; }
        .footer-links { list-style: none; margin: 0; padding: 0; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links li a.plain-link { color: var(--text-muted); font-size: 14px; transition: color .2s; }
        .footer-links li a.plain-link:hover { color: var(--brand-light); }
        .footer-status-note { font-size: 13px; color: var(--text-muted); line-height: 1.9; margin-top: 12px; }
        .copyright-row { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 14px; color: var(--text-muted); }
        .copyright-row a { color: var(--text-muted); }
        .copyright-row a:hover { color: var(--brand-light); }
        .place-bg { background-image: url('/assets/images/backpic/back-3.webp'); background-size: cover; background-position: center; }
        .stat-number { font-size: 32px; font-weight: 800; color: #fff; line-height: 1.2; }
        .stat-number span.brand-gradient { font-size: 0.8em; }

        @media (prefers-reduced-motion: reduce) {
            * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
        }

        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 42px; }
            .featured-cards-grid { grid-template-columns: 1fr 1fr; }
            .featured-card-lg { grid-column: span 2; grid-row: auto; }
            .philosophy-block { grid-template-columns: 1fr; gap: 40px; }
            .latest-zone { grid-template-columns: 1fr; }
            .trust-grid { grid-template-columns: 1fr 1fr; }
            .section-space { padding: 72px 0; }
        }
        @media (max-width: 768px) {
            .header-search.desktop-only { display: none; }
            .mobile-toggle { display: flex; }
            .header-nav { display: none; }
            .header-inner { height: 70px; }
            .featured-cards-grid { grid-template-columns: 1fr; }
            .featured-card-lg { grid-column: span 1; }
            .feature-grid { grid-template-columns: 1fr; gap: 18px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .post-list li .inner-card { flex-direction: column; }
            .post-thumb { width: 100%; height: 160px; }
            .section-space { padding: 56px 0; }
            .hero-wrap { padding: 70px 0 70px; }
            .cta-form { flex-direction: column; }
            .cta-panel { padding: 40px 20px; }
            .trust-grid { grid-template-columns: 1fr; }
            .featured-cards-grid { gap: 12px; }
            .cred-line { flex-direction: column; text-align: center; }
        }

/* roulang page: article */
:root {
            --night: #0B111E;
            --brand: #18D6C3;
            --bright: #7CFFEB;
            --amber: #F5A524;
            --text-main: #F1F5FB;
            --text-sub: #A6B2C7;
            --text-muted: #71829B;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-pill: 999px;
            --shadow-card: 0 20px 45px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, sans-serif;
            background-color: var(--night);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(24, 214, 195, 0.08) 0%, transparent 60%), radial-gradient(ellipse at 10% 90%, rgba(245, 165, 36, 0.05) 0%, transparent 50%);
            z-index: 0;
            pointer-events: none;
        }
        body::after {
            content: "";
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 30h60M30 0v60' stroke='rgba(255,255,255,0.02)' stroke-width='1'/%3E%3C/svg%3E");
            z-index: 0;
            pointer-events: none;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 17, 30, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            min-height: 76px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            flex-wrap: wrap;
        }
        .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.3px;
        }
        .logo-text .logo-mark {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(24, 214, 195, 0.2), rgba(24, 214, 195, 0.05));
            border: 1px solid rgba(24, 214, 195, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 auto;
        }
        .logo-text .logo-mark svg {
            width: 24px;
            height: 24px;
            stroke: var(--brand);
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-pill);
            padding: 0 4px 0 14px;
            height: 44px;
            flex: 1;
            max-width: 560px;
            margin: 0 auto;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(24, 214, 195, 0.15), 0 0 20px rgba(24, 214, 195, 0.08);
        }
        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 14px;
            min-width: 0;
            font-family: inherit;
        }
        .header-search input::placeholder {
            color: var(--text-sub);
        }
        .header-search input::-webkit-search-cancel-button {
            -webkit-appearance: none;
        }
        .header-search-btn {
            background: var(--brand);
            color: #04231F;
            border: none;
            border-radius: var(--radius-pill);
            height: 36px;
            padding: 0 20px;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            font-family: inherit;
            flex-shrink: 0;
            font-weight: 600;
        }
        .header-search-btn:hover {
            background: var(--bright);
            box-shadow: 0 0 20px rgba(24, 214, 195, 0.3);
        }
        .header-search-btn:active {
            transform: scale(0.96);
        }
        .header-search-btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .nav-link {
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active-nav {
            color: var(--brand);
            background: rgba(24, 214, 195, 0.08);
            font-weight: 600;
        }
        .login-outline-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 20px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(24, 214, 195, 0.4);
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            background: rgba(24, 214, 195, 0.06);
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .login-outline-btn:hover {
            background: rgba(24, 214, 195, 0.12);
            box-shadow: 0 0 18px rgba(24, 214, 195, 0.15);
            color: var(--bright);
        }
        .login-outline-btn:active {
            transform: scale(0.96);
        }
        .login-outline-btn:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-main);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: min(86vw, 360px);
            height: 100vh;
            background: rgba(11, 17, 30, 0.92);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            z-index: 200;
            padding: 24px;
            box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
            flex-direction: column;
            gap: 8px;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        .mobile-menu-header .close-btn {
            background: rgba(255, 255, 255, 0.1);
            border: none;
            color: var(--text-main);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: background 0.3s ease;
        }
        .mobile-menu-header .close-btn:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 14px;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 6px;
            text-decoration: none;
            transition: var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(24, 214, 195, 0.1);
            color: var(--brand);
        }
        .mobile-menu .btn-primary-sm {
            display: block;
            text-align: center;
            padding: 12px 20px;
            border-radius: 999px;
            background: var(--brand);
            color: #04231F;
            font-weight: 700;
            border: none;
            margin-top: 8px;
            cursor: pointer;
        }
        @media (min-width: 1025px) {
            .desktop-only {
                display: flex;
            }
        }
        @media (max-width: 1200px) {
            .logo-text {
                font-size: 18px;
            }
            .header-search {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
                margin: 6px 0 12px;
            }
            .header-inner {
                padding-top: 10px;
            }
            .header-nav {
                margin-left: auto;
            }
        }
        @media (max-width: 768px) {
            .desktop-only {
                display: none;
            }
            .header-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
        }
        @media (min-width: 769px) {
            .mobile-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        .site-footer {
            background: rgba(5, 9, 16, 0.9);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 30px;
            margin-top: 80px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 19px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 30%, var(--brand));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            text-align: left;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-sub);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--brand);
            padding-left: 4px;
        }
        .footer-status-note {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 14px 16px;
            color: var(--text-sub);
            font-size: 13.5px;
        }
        .copyright-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: var(--text-muted);
            font-size: 13px;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .copyright-row {
                flex-direction: column;
                text-align: center;
            }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #18D6C3, #14B8A8);
            color: #04231F;
            font-weight: 700;
            border: none;
            padding: 14px 30px;
            border-radius: 999px;
            cursor: pointer;
            font-size: 15px;
            transition: var(--transition);
            gap: 8px;
            text-decoration: none;
            box-shadow: 0 0 25px rgba(24, 214, 195, 0.20);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(24, 214, 195, 0.35);
            color: #04231F;
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 999px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-secondary:active {
            transform: scale(0.96);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid rgba(255, 255, 255, 0.6);
            outline-offset: 3px;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 18px 0;
            font-size: 14px;
            color: var(--text-sub);
        }
        .breadcrumb-nav a {
            color: var(--text-sub);
            text-decoration: none;
        }
        .breadcrumb-nav a:hover {
            color: var(--brand);
        }
        .breadcrumb-sep {
            color: var(--text-muted);
            margin: 0 4px;
            opacity: 0.7;
        }
        .breadcrumb-current {
            color: var(--text-muted);
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        @media (max-width: 520px) {
            .breadcrumb-nav {
                font-size: 13px;
                gap: 4px;
            }
            .breadcrumb-current {
                max-width: 150px;
            }
        }
        .article-hero-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 24px;
            padding: 42px 44px;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            position: relative;
            overflow: hidden;
            margin-top: 8px;
        }
        .article-hero-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(24, 214, 195, 0.4), transparent);
        }
        @media (max-width: 640px) {
            .article-hero-card {
                padding: 26px 22px;
                border-radius: 18px;
            }
        }
        .article-hero-card .h1-article {
            font-size: clamp(1.65rem, 3vw, 2.4rem);
            line-height: 1.35;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.2px;
            margin-top: 12px;
            word-break: break-word;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
        }
        .article-meta span {
            white-space: nowrap;
        }
        .article-meta i {
            margin-right: 5px;
            color: var(--brand);
            font-size: 13px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            background: rgba(24, 214, 195, 0.1);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 8px;
            white-space: nowrap;
        }
        .badge-amber {
            background: rgba(245, 165, 36, 0.12);
            color: var(--amber);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr;
            position: relative;
            margin-top: 24px;
        }
        .article-body {
            max-width: 860px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.11);
            border-radius: 24px;
            padding: 48px 56px;
            font-size: 16.5px;
            line-height: 1.95;
            color: #E2E9F4;
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 24px 20px;
                font-size: 15.5px;
                border-radius: 16px;
            }
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--brand);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            color: #fff;
            margin: 28px 0 14px;
        }
        .article-body p {
            margin: 0 0 18px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 4px;
            padding-left: 12px;
        }
        .article-body li {
            margin-bottom: 6px;
            line-height: 1.8;
        }
        .article-body ul li::marker {
            color: var(--brand);
            font-size: 14px;
        }
        .article-body ol li::marker {
            color: var(--brand);
            font-weight: 600;
        }
        .article-body blockquote {
            border-left: 4px solid var(--brand);
            background: rgba(24, 214, 195, 0.06);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 16px 16px 0;
            color: var(--text-main);
        }
        .article-body img {
            border-radius: 14px;
            margin: 28px auto;
        }
        .article-body a {
            color: var(--brand);
            border-bottom: 1px solid rgba(24, 214, 195, 0.3);
            padding-bottom: 1px;
        }
        .article-body a:hover {
            color: var(--bright);
            border-bottom-color: var(--bright);
        }
        .article-body hr {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin: 24px 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 15px;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 10px 12px;
            text-align: left;
        }
        .article-body table th {
            background: rgba(255, 255, 255, 0.06);
            font-weight: 600;
            color: var(--text-main);
        }
        .article-body code {
            background: rgba(255, 255, 255, 0.1);
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--brand);
        }
        .article-body pre {
            background: rgba(0, 0, 0, 0.4);
            padding: 18px 20px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 20px 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .empty-state {
            text-align: center;
            padding: 80px 40px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed rgba(255, 255, 255, 0.16);
            border-radius: 24px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            width: 100%;
        }
        .empty-state .empty-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: rgba(24, 214, 195, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .empty-state .empty-icon i {
            color: var(--brand);
            font-size: 26px;
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-tags .tag-btn {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-sub);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }
        .article-tags .tag-btn:hover {
            background: rgba(24, 214, 195, 0.1);
            border-color: rgba(24, 214, 195, 0.2);
            color: var(--brand);
        }
        .related-section {
            max-width: 860px;
            margin: 24px auto 0;
        }
        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: #F1F5FB;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title::before {
            content: "";
            width: 6px;
            height: 22px;
            background: linear-gradient(180deg, var(--brand), #0e8b80);
            border-radius: 999px;
            display: inline-block;
        }
        .data-panel-side {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 24px;
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }
        .data-panel-side .side-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .data-panel-side .side-item:last-child {
            border-bottom: none;
        }
        .num-badge {
            width: 34px;
            height: 34px;
            flex: 0 0 auto;
            background: linear-gradient(135deg, rgba(24, 214, 195, 0.2), rgba(24, 214, 195, 0.05));
            border: 1px solid rgba(24, 214, 195, 0.25);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand);
            font-size: 14px;
        }
        .data-panel-side .side-title {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            white-space: normal;
            display: block;
        }
        .cta-rounded-small {
            background: linear-gradient(135deg, rgba(24, 214, 195, 0.15), rgba(24, 214, 195, 0.03));
            border: 1px solid rgba(24, 214, 195, 0.2);
            border-radius: 20px;
            padding: 22px;
            margin-top: 18px;
        }
        .nav-back-arrows {
            display: flex;
            justify-content: space-between;
            width: 100%;
            margin-top: 20px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.22);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item summary {
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            flex: 0 0 auto;
            background: rgba(24, 214, 195, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 14px;
            transition: transform 0.3s ease;
        }
        .faq-item details[open] summary {
            color: var(--brand);
        }
        .faq-item details[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-sub);
            font-size: 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
        }
        @media (max-width: 768px) {
            .article-meta {
                gap: 10px 14px;
                font-size: 13px;
            }
            .container {
                padding: 0 16px;
            }
        }
        .php-code-note {
            display: none !important;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root {
        --bg: #0B111E;
        --surface: rgba(255, 255, 255, 0.05);
        --surface-hover: rgba(255, 255, 255, 0.09);
        --border: rgba(255, 255, 255, 0.12);
        --brand: #18D6C3;
        --brand-light: #7CFFEB;
        --amber: #F5A524;
        --success: #34D399;
        --danger: #F87171;
        --text: #F1F5FB;
        --muted: #A6B2C7;
        --weak: #71829B;
        --radius-lg: 20px;
        --radius-md: 12px;
        --radius-pill: 999px;
        --shadow-card: 0 20px 45px rgba(0, 0, 0, 0.35);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--text);
        font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        font-size: 16px;
        line-height: 1.8;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }

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

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

    button,
    input {
        font-family: inherit;
        font-size: 14px;
    }

    .container {
        max-width: 1220px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(11, 17, 30, 0.84);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .header-inner {
        min-height: 76px;
        display: flex;
        align-items: center;
        gap: 18px;
        flex-wrap: nowrap;
    }

    .logo-text {
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 19px;
        font-weight: 800;
        letter-spacing: 0.3px;
        color: #fff;
        white-space: nowrap;
        position: relative;
        transition: opacity 0.2s;
    }

    .logo-text:hover {
        opacity: 0.85;
    }

    .logo-mark {
        width: 36px;
        height: 36px;
        border-radius: 12px;
        background: linear-gradient(140deg, rgba(24, 214, 195, 0.24), rgba(255, 255, 255, 0.08));
        border: 1px solid rgba(24, 214, 195, 0.34);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .logo-mark svg {
        width: 20px;
        height: 20px;
        stroke: var(--brandlight);
    }

    .header-search {
        flex: 1 1 auto;
        max-width: 560px;
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: var(--radius-pill);
        padding: 0 6px 0 16px;
        height: 44px;
        transition: border-color .25s, box-shadow .25s;
    }

    .header-search:focus-within {
        border-color: var(--brand);
        box-shadow: 0 0 0 4px rgba(24, 214, 195, 0.16);
    }

    .header-search input {
        flex: 1 1 auto;
        min-width: 0;
        background: transparent;
        border: 0;
        outline: none;
        color: #F1F5FB;
        height: 100%;
    }

    .header-search input::placeholder {
        color: var(--weak);
    }

    .header-search-btn {
        flex: 0 0 auto;
        height: 34px;
        border: 0;
        background: linear-gradient(120deg, #18D6C3, #14b8a8);
        color: #062019;
        font-weight: 700;
        padding: 0 18px;
        border-radius: 999px;
        cursor: pointer;
        transition: transform .2s, box-shadow .2s;
    }

    .header-search-btn:hover {
        box-shadow: 0 0 18px rgba(24, 214, 195, 0.35);
        transform: translateY(-1px);
    }

    .header-nav {
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
    }

    .nav-link {
        font-size: 14px;
        color: var(--muted);
        padding: 8px 12px;
        border-radius: 10px;
        transition: color .2s, background .2s;
        font-weight: 500;
    }

    .nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.06);
    }

    .nav-link.active-nav {
        color: var(--brandlight);
        background: rgba(24, 214, 195, 0.1);
    }

    .login-outline-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
        height: 38px;
        border: 1px solid rgba(24, 214, 195, 0.6);
        background: rgba(24, 214, 195, 0.04);
        color: var(--brandlight);
        font-size: 13px;
        font-weight: 600;
        padding: 0 16px;
        border-radius: 999px;
        transition: box-shadow .25s, transform .2s, background .2s;
        white-space: nowrap;
    }

    .login-outline-btn:hover {
        background: rgba(24, 214, 195, 0.14);
        box-shadow: 0 0 18px rgba(24, 214, 195, 0.35);
        transform: translateY(-1px);
    }

    .mobile-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border: 1px solid rgba(255, 255, 255, 0.12);
        background: rgba(255, 255, 255, 0.06);
        border-radius: 10px;
        color: #fff;
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }

    .mobile-menu {
        position: fixed;
        inset: 0;
        z-index: 200;
        background: rgba(6, 10, 19, 0.92);
        backdrop-filter: blur(30px);
        padding: 30px 24px;
        display: flex;
        flex-direction: column;
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s, visibility .3s;
    }

    .mobile-menu.open {
        opacity: 1;
        visibility: visible;
    }

    .mobile-menu-top {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 30px;
    }

    .mobile-menu-close {
        width: 44px;
        height: 44px;
        border: 1px solid rgba(255, 255, 255, 0.12);
        background: rgba(255, 255, 255, 0.06);
        border-radius: 10px;
        color: #fff;
        font-size: 28px;
        cursor: pointer;
    }

    .mobile-menu-link {
        color: #fff;
        font-size: 17px;
        padding: 14px 8px;
        border-radius: 12px;
        font-weight: 500;
    }

    .mobile-menu-link:hover {
        background: rgba(255, 255, 255, 0.06);
        color: var(--brandlight);
    }

    .desktop-only {
        display: flex;
    }

    .site-footer {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        background: rgba(5, 9, 17, 0.88);
        padding: 60px 0 0;
        margin-top: 20px;
        color: #C6D0E0;
        font-size: 14px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
        gap: 42px;
        padding-bottom: 42px;
    }

    .footer-logo {
        font-size: 18px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 14px;
        white-space: nowrap;
    }

    .footer-heading {
        font-size: 14px;
        font-weight: 700;
        color: #fff;
        margin: 18px 0 14px;
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .plain-link {
        color: #A6B2C7;
        transition: color .2s;
    }

    .plain-link:hover {
        color: var(--brandlight);
    }

    .footer-status-note {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 12px;
        padding: 14px 16px;
        color: #A6B2C7;
        line-height: 1.9;
        font-size: 13px;
    }

    .copyright-row {
        display: flex;
        justify-content: space-between;
        gap: 18px;
        flex-wrap: wrap;
        padding: 20px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        color: var(--weak);
        font-size: 13px;
    }

    .category-hero {
        position: relative;
        min-height: 330px;
        display: flex;
        align-items: flex-end;
        padding: 74px 0 44px;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .category-hero::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11, 17, 30, 0.65) 0%, rgba(11, 17, 30, 0.78) 55%, #0B111E 100%);
        z-index: 1;
        pointer-events: none;
    }

    .category-hero .container {
        position: relative;
        z-index: 2;
    }

    .cat-breadcrumb {
        font-size: 13px;
        color: #A6B2C7;
        margin-bottom: 10px;
        letter-spacing: 0.2px;
    }

    .cat-breadcrumb .sep {
        margin: 0 8px;
        color: #46546b;
    }

    .category-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-weight: 600;
        color: var(--brandlight);
        background: rgba(24, 214, 195, 0.12);
        border: 1px solid rgba(24, 214, 195, 0.28);
        padding: 6px 14px;
        border-radius: 999px;
        font-size: 13px;
        margin-bottom: 16px;
        white-space: nowrap;
    }

    .category-hero h1 {
        margin: 0 0 14px;
        font-size: clamp(2.2rem, 5vw, 3.6rem);
        font-weight: 800;
        letter-spacing: 1px;
        line-height: 1.2;
    }

    .category-hero-desc {
        max-width: 610px;
        color: #C7D2E5;
        font-size: 15px;
        margin-bottom: 26px;
    }

    .hero-actions {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
    }

    .btn-primary,
    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 46px;
        padding: 0 24px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 700;
        transition: all .25s ease;
        border: 0;
        cursor: pointer;
    }

    .btn-primary {
        background: linear-gradient(120deg, #18D6C3, #0cc2b0);
        color: #062019;
        box-shadow: 0 0 22px rgba(24, 214, 195, 0.25);
    }

    .btn-primary:hover {
        box-shadow: 0 0 36px rgba(24, 214, 195, 0.42);
        transform: translateY(-2px);
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.16);
        color: #E5EEF8;
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.14);
        transform: translateY(-2px);
    }

    .cat-split {
        display: grid;
        grid-template-columns: 274px minmax(0, 1fr);
        gap: 52px;
        padding: 64px 0 30px;
        align-items: start;
    }

    .cat-toc {
        position: sticky;
        top: 104px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(18px);
        border-radius: 20px;
        padding: 22px 16px;
    }

    .toc-title {
        font-size: 12px;
        font-weight: 700;
        color: var(--weak);
        text-transform: uppercase;
        letter-spacing: 1.5px;
        padding: 0 10px;
        margin: 0 0 12px;
    }

    .toc-list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .toc-list a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 9px 12px;
        border-radius: 10px;
        color: #A6B2C7;
        font-size: 14px;
        transition: all .2s;
        border-left: 2px solid transparent;
    }

    .toc-list a:hover {
        color: var(--brandlight);
        background: rgba(255, 255, 255, 0.06);
        border-left-color: var(--brand);
    }

    .toc-note {
        margin-top: 18px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 14px 10px 2px;
        font-size: 13px;
        color: var(--weak);
        line-height: 1.9;
    }

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

    .guide-section {
        margin-bottom: 28px;
        background: rgba(255, 255, 255, 0.042);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 24px;
        padding: 36px;
        scroll-margin-top: 110px;
    }

    .guide-section h2 {
        font-size: clamp(1.55rem, 2.5vw, 2rem);
        font-weight: 700;
        margin: 0 0 8px;
        color: #fff;
        letter-spacing: 0.2px;
    }

    .guide-section .section-kicker {
        color: var(--brand);
        font-size: 13px;
        font-weight: 700;
        margin-bottom: 6px;
        display: block;
        letter-spacing: 1px;
    }

    .section-desc {
        color: #A6B2C7;
        font-size: 15px;
        margin-top: 12px;
        margin-bottom: 24px;
    }

    .mini-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 14px;
        margin-top: 22px;
    }

    .mini-stat {
        background: rgba(255, 255, 255, 0.045);
        border: 1px solid rgba(255, 255, 255, 0.09);
        border-radius: 16px;
        padding: 16px;
    }

    .mini-stat strong {
        display: block;
        color: var(--brandlight);
        font-size: 24px;
        font-weight: 800;
        line-height: 1.2;
    }

    .mini-stat span {
        font-size: 13px;
        color: var(--muted);
    }

    .prep-list {
        margin: 0;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 14px;
    }

    .prep-card {
        background: rgba(255, 255, 255, 0.044);
        border: 1px solid rgba(255, 255, 255, 0.09);
        border-radius: 18px;
        padding: 18px;
    }

    .prep-card .step-icon {
        width: 42px;
        height: 42px;
        border-radius: 14px;
        background: rgba(24, 214, 195, 0.12);
        border: 1px solid rgba(24, 214, 195, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 14px;
        color: var(--brandlight);
        font-weight: 700;
    }

    .prep-card h3 {
        font-size: 15px;
        margin: 0 0 8px;
        color: #FFF;
    }

    .prep-card p {
        font-size: 14px;
        color: #A6B2C7;
        margin: 0;
        line-height: 1.8;
    }

    .flow-grid {
        display: grid;
        grid-template-columns: 0.9fr 1.1fr;
        gap: 26px;
        margin-top: 24px;
    }

    .flow-visual {
        border-radius: 20px;
        overflow: hidden;
        border: 1px solid rgba(255, 255, 255, 0.1);
        min-height: 240px;
        position: relative;
    }

    .flow-visual img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        inset: 0;
    }

    .flow-steps {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .flow-step {
        display: flex;
        gap: 14px;
        align-items: flex-start;
        padding: 10px 12px;
        border-radius: 14px;
    }

    .flow-step:hover {
        background: rgba(255, 255, 255, 0.03);
    }

    .flow-step-num {
        flex: 0 0 36px;
        height: 36px;
        background: rgba(24, 214, 195, 0.14);
        color: var(--brandlight);
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 14px;
        border: 1px solid rgba(24, 214, 195, 0.2);
    }

    .flow-step h4 {
        margin: 2px 0 6px;
        font-size: 15px;
        color: #fff;
    }

    .flow-step p {
        margin: 0;
        font-size: 14px;
        color: #A6B2C7;
        line-height: 1.8;
    }

    .device-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        margin-top: 22px;
    }

    .device-card {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 18px;
        padding: 20px;
        transition: all .2s;
    }

    .device-card:hover {
        border-color: rgba(24, 214, 195, 0.35);
        transform: translateY(-3px);
        background: rgba(255, 255, 255, 0.065);
    }

    .device-card h3 {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 16px;
        margin: 0 0 8px;
        color: #fff;
    }

    .device-card p {
        font-size: 14px;
        color: #A6B2C7;
        margin: 0;
    }

    .recovery-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
        margin-top: 20px;
    }

    .recovery-card {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 16px;
        padding: 16px 18px;
        font-size: 14px;
        color: #C6D0E0;
        display: flex;
        gap: 12px;
        align-items: flex-start;
    }

    .recovery-card .r-icon {
        flex: 0 0 30px;
        height: 30px;
        border-radius: 9px;
        background: rgba(24, 214, 195, 0.13);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .recovery-card strong {
        display: block;
        color: #fff;
        margin-bottom: 4px;
        font-size: 14px;
    }

    .recovery-card span {
        display: block;
        color: #A6B2C7;
        line-height: 1.8;
    }

    .faq-block {
        margin-top: 18px;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .faq-item {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.09);
        border-radius: 18px;
        transition: border-color .2s;
    }

    .faq-item:hover {
        border-color: rgba(24, 214, 195, 0.3);
    }

    details summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        cursor: pointer;
        padding: 18px 22px;
        min-height: 52px;
        font-weight: 600;
        color: #E9F1FA;
        font-size: 15px;
        line-height: 1.6;
        user-select: none;
    }

    details summary::-webkit-details-marker {
        display: none;
    }

    .faq-icon {
        flex: 0 0 24px;
        height: 24px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 21px;
        font-weight: 300;
        color: var(--brandlight);
        transition: transform .25s;
    }

    details[open] summary {
        color: var(--brandlight);
    }

    details[open] .faq-icon {
        transform: rotate(135deg);
    }

    .faq-answer {
        padding: 0 22px 18px;
        margin: 0;
        font-size: 14px;
        color: #9DABBF;
        line-height: 1.85;
    }

    .split-cta {
        background: rgba(255, 255, 255, 0.045);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 24px;
        padding: 44px 36px;
        margin: 50px 0 76px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .split-cta::before {
        content: "";
        position: absolute;
        inset: -30% -20% auto;
        height: 180px;
        background: radial-gradient(closest-side, rgba(24, 214, 195, 0.2), transparent);
        pointer-events: none;
    }

    .split-cta h2 {
        font-size: clamp(1.7rem, 3vw, 2.4rem);
        margin: 0 0 12px;
        color: #fff;
        font-weight: 800;
    }

    .split-cta .cta-note {
        color: #A6B2C7;
        font-size: 14px;
        margin-bottom: 26px;
    }

    .site-footer {
        position: relative;
        z-index: 3;
    }

    @media (max-width: 1100px) {
        .header-nav {
            display: none;
        }
        .cat-split {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .cat-toc {
            position: static;
            max-width: none;
        }
        .toc-list {
            flex-flow: row wrap;
        }
        .toc-list a {
            border-left: 0;
        }
        .toc-list a:hover {
            border-left: 0;
            color: var(--brandlight);
        }
        .toc-note {
            display: none;
        }
        .header-inner {
            gap: 12px;
        }
    }

    @media (max-width: 900px) {
        .mobile-toggle {
            display: flex;
        }
        .desktop-only {
            display: none !important;
        }
        .login-outline-btn {
            display: none;
        }
        .header-inner {
            min-height: 70px;
        }
        .prep-list,
        .mini-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .flow-grid {
            grid-template-columns: 1fr;
        }
        .flow-visual {
            min-height: 200px;
        }
        .device-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 640px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .header-inner {
            flex-wrap: nowrap;
        }
        .logo-text {
            font-size: 16px;
            gap: 6px;
        }
        .logo-mark {
            width: 32px;
            height: 32px;
        }
        .category-hero {
            padding-top: 54px;
            min-height: 280px;
        }
        .category-hero h1 {
            font-size: 2.05rem;
        }
        .category-hero-desc {
            font-size: 14px;
        }
        .guide-section {
            padding: 24px 18px;
        }
        .prep-list,
        .mini-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .copyright-row {
            justify-content: center;
            text-align: center;
        }
        .cat-split {
            padding-top: 30px;
        }
        .split-cta {
            padding: 32px 20px;
        }
        .btn-primary,
        .btn-ghost {
            width: 100%;
        }
        .hero-actions {
            width: 100%;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }
        *,
        *::before,
        *::after {
            transition: none !important;
            animation: none !important;
        }
    }

/* roulang page: category2 */
:root {
        --bg-night: #0B111E;
        --bg-soft: rgba(255, 255, 255, 0.045);
        --glass: rgba(255, 255, 255, 0.055);
        --glass-strong: rgba(255, 255, 255, 0.08);
        --border-glass: rgba(255, 255, 255, 0.12);
        --border-soft: rgba(255, 255, 255, 0.08);
        --brand: #18D6C3;
        --brand-light: #7CFFEB;
        --amber: #F5A524;
        --success: #34D399;
        --danger: #F87171;
        --text-main: #F1F5FB;
        --text-muted: #A6B2C7;
        --text-dim: #71829B;
        --radius-card: 20px;
        --radius-small: 12px;
        --shadow-card: 0 20px 45px rgba(0, 0, 0, 0.35);
        --shadow-glow: 0 0 30px rgba(24, 214, 195, 0.28);
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background-color: var(--bg-night);
        color: var(--text-main);
        font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

    body.menu-open {
        overflow: hidden;
    }

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

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

    button,
    input {
        font-family: inherit;
        font-size: inherit;
    }

    svg {
        flex: 0 0 auto;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* header */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 120;
        background: rgba(11, 17, 30, 0.82);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        height: 76px;
    }

    .logo-text {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        color: var(--text-main);
        letter-spacing: 0;
        white-space: nowrap;
    }

    .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        flex: 0 0 auto;
        background: rgba(24, 214, 195, 0.12);
        border: 1px solid rgba(24, 214, 195, 0.45);
        border-radius: 11px;
    }

    .logo-mark svg {
        width: 21px;
        height: 21px;
        stroke: var(--brand);
    }

    .header-search {
        display: flex;
        align-items: center;
        gap: 6px;
        max-width: 560px;
        width: 100%;
        height: 44px;
        padding: 0 6px 0 16px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border-glass);
        transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    }

    .header-search:focus-within {
        border-color: rgba(24, 214, 195, 0.7);
        box-shadow: 0 0 0 3px rgba(24, 214, 195, 0.12), var(--shadow-glow);
        background: rgba(255, 255, 255, 0.08);
    }

    .header-search input {
        flex: 1;
        min-width: 0;
        height: 100%;
        border: 0;
        outline: none;
        background: transparent;
        color: var(--text-main);
        font-size: 14px;
        letter-spacing: 0.2px;
    }

    .header-search input::placeholder {
        color: var(--text-muted);
        opacity: 0.85;
    }

    .header-search input::-webkit-search-cancel-button {
        display: none;
    }

    .header-search-btn {
        height: 32px;
        padding: 0 18px;
        border: 0;
        border-radius: 999px;
        background: var(--brand);
        color: #06141f;
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
        transition: box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease;
    }

    .header-search-btn:hover {
        background: var(--brand-light);
        box-shadow: 0 0 18px rgba(24, 214, 195, 0.35);
    }

    .header-search-btn:active {
        transform: scale(0.97);
    }

    .header-nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        height: 40px;
        padding: 0 16px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-muted);
        transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        border: 1px solid transparent;
        white-space: nowrap;
    }

    .nav-link:hover {
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.07);
    }

    .nav-link:focus-visible {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }

    .nav-link.active-nav {
        color: var(--brand);
        background: rgba(24, 214, 195, 0.1);
        border-color: rgba(24, 214, 195, 0.2);
    }

    .login-outline-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 38px;
        padding: 0 18px;
        border-radius: 999px;
        border: 1px solid rgba(24, 214, 195, 0.55);
        background: rgba(24, 214, 195, 0.08);
        color: #eaffe9;
        font-size: 14px;
        font-weight: 700;
        white-space: nowrap;
        transition: box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease;
    }

    .login-outline-btn:hover {
        box-shadow: 0 0 18px rgba(24, 214, 195, 0.3);
        background: rgba(24, 214, 195, 0.14);
    }

    .login-outline-btn:active {
        transform: scale(0.97);
    }

    .mobile-toggle {
        display: none;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        border: 1px solid var(--border-glass);
        background: rgba(255, 255, 255, 0.06);
        color: var(--text-main);
        cursor: pointer;
    }

    .mobile-toggle:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    .mobile-toggle:focus-visible {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }

    .mobile-toggle svg {
        width: 20px;
        height: 20px;
    }

    /* mobile menu */
    .mobile-menu {
        position: fixed;
        inset: 0;
        z-index: 200;
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .mobile-menu.open {
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-menu-backdrop {
        position: absolute;
        inset: 0;
        background: rgba(5, 9, 17, 0.78);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .mobile-menu-panel {
        position: relative;
        z-index: 2;
        width: min(88%, 360px);
        margin: 24px auto 0;
        border-radius: 24px;
        border: 1px solid rgba(255, 255, 255, 0.14);
        background: rgba(17, 25, 42, 0.94);
        box-shadow: var(--shadow-card);
        padding: 22px;
        transform: translateY(-12px);
        transition: transform 0.3s ease;
    }

    .mobile-menu.open .mobile-menu-panel {
        transform: translateY(0);
    }

    .mobile-menu-head {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 16px;
    }

    .mobile-menu-close {
        width: 34px;
        height: 34px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        border: 1px solid var(--border-glass);
        background: rgba(255, 255, 255, 0.06);
        color: var(--text-main);
        cursor: pointer;
    }

    .mobile-menu-close:hover {
        background: rgba(255, 255, 255, 0.12);
    }

    .mobile-menu-panel nav {
        display: grid;
        gap: 6px;
    }

    .mobile-menu-panel nav a {
        display: flex;
        min-height: 48px;
        align-items: center;
        padding: 0 14px;
        border-radius: 14px;
        color: var(--text-muted);
        font-weight: 500;
        font-size: 15px;
    }

    .mobile-menu-panel nav a:hover {
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.06);
    }

    .mobile-menu-panel nav a.active-nav {
        color: var(--brand);
        background: rgba(24, 214, 195, 0.1);
    }

    .mobile-menu-panel .login-outline-btn {
        margin-top: 18px;
        width: 100%;
    }

    /* category hero */
    .cat-hero {
        position: relative;
        overflow: hidden;
        border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        background: url('/assets/images/backpic/back-2.png') center 40% / cover no-repeat;
    }

    .cat-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 1;
        background: linear-gradient(100deg, rgba(11, 17, 30, 0.94), rgba(9, 14, 25, 0.82) 58%, rgba(11, 17, 30, 0.92));
    }

    .cat-hero::after {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 0;
        background: radial-gradient(circle at 82% 20%, rgba(24, 214, 195, 0.14), transparent 28%);
    }

    .cat-hero-inner {
        position: relative;
        z-index: 2;
        padding-top: 68px;
        padding-bottom: 70px;
        display: grid;
        grid-template-columns: 1fr minmax(300px, 380px);
        gap: 48px;
        align-items: center;
    }

    .cat-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 14px 6px 10px;
        border-radius: 999px;
        background: rgba(24, 214, 195, 0.1);
        border: 1px solid rgba(24, 214, 195, 0.2);
        color: var(--brand-light);
        font-size: 13px;
        font-weight: 700;
        margin: 0 0 16px 0;
        letter-spacing: 1px;
    }

    .cat-eyebrow .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--brand);
    }

    .cat-title {
        margin: 0 0 12px 0;
        font-size: clamp(2.6rem, 6vw, 4.2rem);
        font-weight: 800;
        letter-spacing: -1px;
        line-height: 1.12;
        color: #fff;
    }

    .cat-title .soft {
        color: var(--brand);
        display: block;
    }

    .cat-description {
        max-width: 640px;
        margin: 18px 0 0 0;
        color: var(--text-muted);
        font-size: 16px;
        line-height: 1.9;
    }

    .cat-description strong {
        color: var(--text-main);
        font-weight: 700;
    }

    .hero-glass {
        position: relative;
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: 22px;
        padding: 24px 22px;
        box-shadow: var(--shadow-card);
    }

    .hero-glass p {
        margin: 0;
        font-size: 14px;
        color: var(--text-main);
        display: flex;
        gap: 10px;
        align-items: flex-start;
    }

    .hero-glass p + p {
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-glass svg {
        width: 18px;
        height: 18px;
        margin-top: 4px;
        stroke: var(--brand);
    }

    .mini-title {
        font-size: 13px;
        color: var(--text-dim);
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .cat-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 26px;
    }

    .btn-primary-glow {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 46px;
        min-width: 142px;
        padding: 0 22px;
        border-radius: 999px;
        border: 0;
        background: linear-gradient(135deg, #22e2cd, #10b7a8);
        color: #05151d;
        font-weight: 800;
        font-size: 15px;
        transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
        box-shadow: 0 0 0 rgba(24, 214, 195, 0);
    }

    .btn-primary-glow:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }

    .btn-primary-glow:active {
        transform: scale(0.97);
    }

    .btn-primary-glow:focus-visible {
        outline: 2px solid #fff;
        outline-offset: 2px;
    }

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 46px;
        min-width: 142px;
        padding: 0 22px;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.18);
        background: rgba(255, 255, 255, 0.07);
        color: var(--text-main);
        font-size: 14px;
        font-weight: 600;
        transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.12);
        border-color: rgba(255, 255, 255, 0.28);
        transform: translateY(-2px);
    }

    .btn-ghost:active {
        transform: scale(0.97);
    }

    .btn-ghost:focus-visible {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }

    /* body layout */
    .cat-layout {
        display: grid;
        grid-template-columns: 270px minmax(0, 1fr);
        gap: 56px;
        padding-top: 60px;
        padding-bottom: 84px;
    }

    .cat-toc {
        position: sticky;
        top: 116px;
        align-self: start;
    }

    .toc-card {
        border: 1px solid var(--border-glass);
        background: rgba(255, 255, 255, 0.04);
        backdrop-filter: blur(14px);
        border-radius: 18px;
        padding: 18px 16px;
    }

    .toc-title {
        margin: 0 4px 10px 4px;
        font-size: 13px;
        color: var(--text-muted);
        letter-spacing: 0.5px;
        font-weight: 600;
    }

    .toc-list {
        display: grid;
        gap: 4px;
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .toc-list a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border-radius: 12px;
        color: var(--text-muted);
        font-size: 14px;
        font-weight: 500;
        transition: background 0.2s ease, color 0.2s ease;
    }

    .toc-list a:hover {
        background: rgba(255, 255, 255, 0.06);
        color: var(--text-main);
    }

    .toc-list a .no {
        color: var(--brand);
        font-weight: 700;
        font-size: 13px;
        font-variant-numeric: tabular-nums;
        width: 20px;
    }

    .toc-callout {
        margin-top: 16px;
        padding: 12px 14px;
        border-radius: 14px;
        background: rgba(245, 165, 36, 0.08);
        border: 1px solid rgba(245, 165, 36, 0.18);
        font-size: 13px;
        color: var(--text-muted);
    }

    .cat-content {
        display: grid;
        gap: 72px;
        padding-bottom: 12px;
    }

    .cat-section {
        scroll-margin-top: 132px;
    }

    .cat-section-head {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        margin-bottom: 18px;
    }

    .cat-section-head .section-number {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        flex: 0 0 auto;
        border-radius: 10px;
        background: rgba(24, 214, 195, 0.12);
        color: var(--brand);
        font-size: 13px;
        font-weight: 800;
        border: 1px solid rgba(24, 214, 195, 0.25);
    }

    .cat-section h2 {
        margin: 0;
        font-size: clamp(1.5rem, 3vw, 2rem);
        font-weight: 750;
        letter-spacing: -0.3px;
        line-height: 1.35;
    }

    .cat-section h2 .highlight {
        color: var(--brand);
    }

    .section-lead {
        margin: -6px 0 24px 48px;
        color: var(--text-muted);
        font-size: 15px;
        max-width: 720px;
    }

    .split-intro-grid {
        display: grid;
        grid-template-columns: 1.1fr 0.9fr;
        gap: 32px;
        align-items: center;
    }

    .text-band {
        padding: 26px 28px;
        border-radius: 20px;
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.025));
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .text-band h4 {
        margin: 0 0 10px 0;
        font-size: 17px;
        color: var(--text-main);
        line-height: 1.5;
    }

    .text-band p {
        margin: 0;
        color: var(--text-muted);
        font-size: 15px;
    }

    .cover-figure {
        position: relative;
        overflow: hidden;
        border-radius: 22px;
        min-height: 280px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
    }

    .cover-figure img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .cover-caption {
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 14px;
        z-index: 2;
        padding: 10px 14px;
        border-radius: 14px;
        background: rgba(11, 17, 30, 0.72);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        color: var(--text-main);
        font-size: 13px;
    }

    .step-stack {
        display: grid;
        gap: 14px;
        margin-top: 22px;
    }

    .step-item {
        display: grid;
        grid-template-columns: 42px 1fr;
        gap: 16px;
        align-items: flex-start;
        padding: 6px 0;
    }

    .step-icon {
        width: 42px;
        height: 42px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 13px;
        background: rgba(255, 255, 255, 0.07);
        border: 1px solid rgba(255, 255, 255, 0.12);
        color: var(--brand);
    }

    .step-icon svg {
        width: 20px;
        height: 20px;
        stroke: currentColor;
    }

    .step-item h4 {
        margin: 3px 0 4px 0;
        font-size: 16px;
        line-height: 1.45;
        color: var(--text-main);
    }

    .step-item p {
        margin: 0;
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.7;
    }

    .notice-panel {
        display: flex;
        gap: 14px;
        padding: 18px 20px;
        border-radius: 18px;
        background: rgba(248, 113, 113, 0.075);
        border: 1px solid rgba(248, 113, 113, 0.2);
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.8;
        margin: 24px 0 0 0;
    }

    .notice-panel svg {
        width: 19px;
        height: 19px;
        margin-top: 3px;
        color: #fca5a5;
        stroke: currentColor;
    }

    .content-manual {
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.9;
        margin-bottom: 18px;
    }

    .content-manual strong {
        color: var(--text-main);
    }

    .feature-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        margin-top: 18px;
    }

    .feature-cell {
        padding: 18px 18px 16px;
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.045);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-top: 2px solid rgba(24, 214, 195, 0.4);
    }

    .feature-cell h4 {
        margin: 0 0 6px 0;
        font-size: 15px;
        color: var(--text-main);
        line-height: 1.5;
    }

    .feature-cell p {
        margin: 0;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.75;
    }

    .pass-note {
        margin-top: 20px;
        display: flex;
        gap: 12px;
        align-items: flex-start;
        padding: 16px 18px;
        border-radius: 16px;
        background: rgba(24, 214, 195, 0.06);
        border: 1px solid rgba(24, 214, 195, 0.16);
        font-size: 14px;
        color: var(--text-muted);
    }

    .pass-note svg {
        color: var(--brand);
        width: 19px;
        height: 19px;
        margin-top: 3px;
        stroke: currentColor;
    }

    .pass-note strong {
        color: var(--text-main);
    }

    .number-list {
        counter-reset: step;
        padding-left: 0;
        margin: 20px 0 0 0;
        list-style: none;
        display: grid;
        gap: 16px;
    }

    .number-list li {
        counter-increment: step;
        display: grid;
        grid-template-columns: 34px 1fr;
        gap: 16px;
        align-items: flex-start;
    }

    .number-list li::before {
        content: counter(step);
        width: 34px;
        height: 34px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.07);
        border: 1px solid rgba(255, 255, 255, 0.12);
        color: var(--brand);
        font-weight: 800;
        border-radius: 50%;
        font-size: 14px;
        margin-top: 2px;
    }

    .number-list h4 {
        margin: 0 0 3px 0;
        font-size: 16px;
        line-height: 1.45;
        color: var(--text-main);
    }

    .number-list p {
        margin: 0;
        font-size: 14px;
        color: var(--text-muted);
    }

    .treatment-list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
    }

    .treatment-list li {
        display: grid;
        grid-template-columns: 150px 1fr;
        gap: 16px;
        padding: 16px 2px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

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

    .treatment-key {
        font-weight: 700;
        color: var(--text-main);
        font-size: 14px;
        line-height: 1.7;
    }

    .treatment-value {
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.8;
    }

    .check-list {
        list-style: none;
        margin: 18px 0 0 0;
        padding: 0;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px 22px;
    }

    .check-list li {
        position: relative;
        padding-left: 32px;
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.75;
    }

    .check-list li::before {
        content: "";
        position: absolute;
        left: 2px;
        top: 4px;
        width: 18px;
        height: 18px;
        background: rgba(24, 214, 195, 0.16);
        border: 1px solid rgba(24, 214, 195, 0.55);
        border-radius: 6px;
    }

    .check-list li::after {
        content: "";
        position: absolute;
        left: 6px;
        top: 10px;
        width: 9px;
        height: 5px;
        border-left: 2px solid var(--brand);
        border-bottom: 2px solid var(--brand);
        transform: rotate(-45deg);
    }

    /* faq */
    .faq-list {
        display: grid;
        gap: 14px;
        margin-top: 22px;
    }

    details.faq-item {
        background: rgba(255, 255, 255, 0.045);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 18px;
        padding: 6px 20px 6px 20px;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
        overflow: hidden;
    }

    details.faq-item[open] {
        border-color: rgba(24, 214, 195, 0.24);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
    }

    details.faq-item summary {
        display: flex;
        justify-content: space-between;
        align-items: center;
        min-height: 54px;
        cursor: pointer;
        list-style: none;
        gap: 16px;
        user-select: none;
    }

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

    .faq-question-text {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-main);
        line-height: 1.6;
        transition: color 0.2s ease;
    }

    details.faq-item summary:hover .faq-question-text {
        color: var(--brand-light);
    }

    .faq-icon {
        width: 28px;
        height: 28px;
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.16);
        transition: transform 0.3s ease;
    }

    details.faq-item[open] .faq-icon {
        transform: rotate(180deg);
        background: rgba(24, 214, 195, 0.14);
        border-color: rgba(24, 214, 195, 0.3);
    }

    details.faq-item .faq-icon svg {
        width: 15px;
        height: 15px;
        stroke: currentColor;
        color: var(--text-muted);
    }

    details.faq-item[open] .faq-icon svg {
        color: var(--brand);
    }

    .faq-answer {
        padding: 0 32px 18px 0;
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.9;
        border-top: 1px solid rgba(255, 255, 255, 0.07);
        margin-top: 4px;
    }

    .faq-answer p {
        margin: 12px 0 0 0;
    }

    /* CTA */
    .cat-cta {
        padding-bottom: 90px;
    }

    .cta-panel {
        position: relative;
        text-align: center;
        padding: 52px 40px;
        border-radius: 28px;
        overflow: hidden;
        background: linear-gradient(135deg, rgba(24, 214, 195, 0.12), rgba(11, 17, 30, 0.72) 55%);
        border: 1px solid rgba(255, 255, 255, 0.12);
        box-shadow: var(--shadow-card);
    }

    .cta-panel::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(circle at 50% 0%, rgba(24, 214, 195, 0.15), transparent 46%);
    }

    .cta-panel > * {
        position: relative;
        z-index: 1;
    }

    .cta-panel h2 {
        margin: 0 0 10px 0;
        font-size: clamp(1.7rem, 3vw, 2.3rem);
        color: var(--text-main);
        line-height: 1.35;
    }

    .cta-panel p {
        margin: 0 auto 24px auto;
        max-width: 520px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.8;
    }

    /* footer */
    .site-footer {
        border-top: 1px solid rgba(255, 255, 255, 0.09);
        background: #080E1A;
        padding-top: 54px;
        padding-bottom: 22px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
        gap: 32px;
        padding-bottom: 34px;
    }

    .footer-logo {
        font-size: 20px;
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 8px;
    }

    .footer-heading {
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 12px;
        color: var(--text-main);
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
        gap: 8px;
    }

    .footer-links .plain-link {
        color: var(--text-muted);
        font-size: 14px;
        display: inline-flex;
        transition: color 0.2s ease;
    }

    .footer-links .plain-link:hover {
        color: var(--brand-light);
    }

    .footer-status-note {
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.8;
        padding: 14px;
        border-radius: 14px;
        background: rgba(255, 255, 255, 0.035);
        border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .copyright-row {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 10px;
        padding-top: 18px;
        border-top: 1px solid rgba(255, 255, 255, 0.07);
        color: var(--text-dim);
        font-size: 13px;
        line-height: 1.7;
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }
        *,
        *::before,
        *::after {
            animation: none !important;
            transition: none !important;
        }
    }

    @media (max-width: 1279px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }
        .header-search {
            max-width: 360px;
        }
        .nav-link {
            padding: 0 12px;
        }
    }

    @media (max-width: 1023px) {
        .header-inner {
            flex-wrap: wrap;
            height: auto;
            gap: 8px 10px;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .header-nav {
            display: none;
        }
        .mobile-toggle {
            display: inline-flex;
            margin-left: 2px;
        }
        .header-search {
            order: 5;
            width: 100%;
            max-width: 100%;
            height: 42px;
        }
        .cat-hero-inner {
            grid-template-columns: 1fr;
            gap: 24px;
            padding-top: 50px;
            padding-bottom: 48px;
        }
        .cat-layout {
            grid-template-columns: 1fr;
            gap: 28px;
            padding-top: 44px;
        }
        .cat-toc {
            position: static;
            overflow-x: auto;
            margin-inline: -4px;
            padding-bottom: 2px;
        }
        .toc-card {
            border-radius: 16px;
            padding: 14px;
        }
        .toc-list {
            display: flex;
            flex-wrap: nowrap;
            min-width: max-content;
            gap: 6px;
            width: 100%;
            overflow-x: auto;
        }
        .toc-list a {
            padding: 8px 14px;
            white-space: nowrap;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.07);
        }
        .toc-callout {
            display: none;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 767px) {
        .logo-text {
            font-size: 17px;
        }
        .logo-mark {
            width: 32px;
            height: 32px;
        }
        .logo-mark svg {
            width: 18px;
            height: 18px;
        }
        .login-outline-btn {
            display: none;
        }
        .cat-hero-inner {
            padding-top: 38px;
            padding-bottom: 40px;
        }
        .cat-title {
            font-size: clamp(2.1rem, 9vw, 3.2rem);
        }
        .cat-description {
            font-size: 15px;
        }
        .hero-glass {
            padding: 18px 16px;
        }
        .split-intro-grid {
            grid-template-columns: 1fr;
        }
        .cover-figure {
            min-height: 210px;
        }
        .section-lead {
            margin-left: 0;
            margin-top: 8px;
        }
        .cat-section-head {
            margin-bottom: 14px;
        }
        .cat-section-head .section-number {
            width: 30px;
            height: 30px;
            font-size: 12px;
        }
        .cat-section h2 {
            font-size: 1.45rem;
        }
        .feature-row {
            grid-template-columns: 1fr;
        }
        .treatment-list li {
            grid-template-columns: 1fr;
            gap: 2px;
        }
        .treatment-key {
            padding-bottom: 4px;
        }
        .check-list {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .cta-panel {
            padding: 36px 20px;
        }
        .copyright-row {
            flex-direction: column;
        }
    }