/* roulang page: index */
:root{
            --bg: #110f13;
            --bg-2: #16131a;
            --panel: #1d1821;
            --panel-2: #251f29;
            --panel-3: #2c2430;
            --text: #f4eee8;
            --muted: #b7aeb7;
            --soft: #8f8591;
            --line: #342d37;
            --line-2: rgba(226,95,143,.26);
            --accent: #e25f8f;
            --accent-2: #9d6bff;
            --accent-3: #f0b45a;
            --success: #4fd1b7;
            --shadow: 0 18px 44px rgba(0,0,0,.30);
            --shadow-soft: 0 12px 30px rgba(0,0,0,.22);
            --radius: 22px;
            --radius-sm: 16px;
            --radius-xs: 12px;
            --space: 24px;
            --space-lg: 34px;
            --sidebar: 288px;
            --topbar: 72px;
            --container: 1180px;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body{
            margin: 0;
            min-height: 100vh;
            background:
                radial-gradient(circle at 20% 10%, rgba(157,107,255,.12), transparent 30%),
                radial-gradient(circle at 85% 84%, rgba(226,95,143,.12), transparent 24%),
                linear-gradient(180deg, #0f0d12 0%, #121016 38%, #0f0d12 100%);
            color: var(--text);
            font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body::before{
            content:"";
            position: fixed;
            inset: 0;
            pointer-events: none;
            background:
                linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
                linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px);
            background-size: 78px 78px;
            mask-image: linear-gradient(180deg, rgba(0,0,0,.46), transparent 78%);
            opacity: .18;
            z-index: 0;
        }

        a{
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, transform .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, opacity .2s ease;
        }

        a:hover{ color: var(--text); }
        img{ max-width: 100%; display: block; }
        button, input, textarea, select{
            font: inherit;
        }
        ::selection{
            background: rgba(226,95,143,.34);
            color: #fff;
        }
        .grid-container{
            width: min(var(--container), calc(100% - 32px));
            max-width: var(--container);
        }

        .site-shell{
            position: relative;
            z-index: 1;
            min-height: 100vh;
        }

        .site-sidebar{
            position: fixed;
            inset: 0 auto 0 0;
            width: var(--sidebar);
            background: linear-gradient(180deg, rgba(20,17,24,.96), rgba(13,12,17,.92));
            border-right: 1px solid rgba(255,255,255,.06);
            backdrop-filter: blur(14px);
            box-shadow: 8px 0 34px rgba(0,0,0,.22);
            z-index: 30;
        }

        .sidebar-inner{
            height: 100%;
            padding: 22px 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .brand{
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 16px 14px;
            border: 1px solid rgba(255,255,255,.06);
            border-radius: var(--radius);
            background:
                linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
            box-shadow: var(--shadow-soft);
        }

        .brand-mark{
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.18rem;
            font-weight: 800;
            letter-spacing: .01em;
        }

        .brand-mark::before{
            content: "";
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            box-shadow: 0 0 0 6px rgba(226,95,143,.12);
            flex: 0 0 auto;
        }

        .brand-sub{
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.55;
        }

        .site-nav{
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .nav-label{
            padding: 0 14px;
            margin-bottom: 2px;
            color: var(--soft);
            font-size: .84rem;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .nav-link{
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 13px 14px;
            border-radius: 16px;
            border: 1px solid transparent;
            color: var(--muted);
            background: transparent;
        }

        .nav-link:hover,
        .nav-link:focus-visible{
            background: rgba(255,255,255,.04);
            border-color: rgba(255,255,255,.08);
            color: var(--text);
            transform: translateX(2px);
        }

        .nav-link.is-active{
            color: var(--text);
            background: linear-gradient(135deg, rgba(226,95,143,.16), rgba(157,107,255,.16));
            border-color: rgba(226,95,143,.22);
            box-shadow: inset 0 0 0 1px rgba(255,255,255,.03);
        }

        .nav-link span:last-child{
            color: var(--soft);
            font-size: .88rem;
        }

        .side-meta{
            margin-top: auto;
            display: grid;
            gap: 12px;
        }

        .side-stat,
        .side-note{
            padding: 16px 14px;
            border-radius: 18px;
            border: 1px solid rgba(255,255,255,.06);
            background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.018));
        }

        .side-stat .k{
            display: block;
            color: var(--muted);
            font-size: .9rem;
            margin-bottom: 4px;
        }

        .side-stat .v{
            display: block;
            font-size: 1.34rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
        }

        .side-note{
            color: var(--muted);
            font-size: .95rem;
        }

        .site-main{
            margin-left: var(--sidebar);
            min-height: 100vh;
            position: relative;
            z-index: 1;
        }

        .mobile-topbar{
            position: fixed;
            inset: 0 0 auto 0;
            height: var(--topbar);
            display: none;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 0 16px;
            background: rgba(15,13,18,.9);
            border-bottom: 1px solid rgba(255,255,255,.06);
            backdrop-filter: blur(12px);
            z-index: 40;
        }

        .topbar-group{
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }

        .nav-toggle,
        .nav-close{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(255,255,255,.08);
            border-radius: 14px;
            background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
            color: var(--text);
            box-shadow: 0 10px 22px rgba(0,0,0,.18);
            cursor: pointer;
        }

        .nav-toggle:hover,
        .nav-toggle:focus-visible,
        .nav-close:hover,
        .nav-close:focus-visible{
            border-color: rgba(226,95,143,.35);
            transform: translateY(-1px);
            background: linear-gradient(180deg, rgba(226,95,143,.12), rgba(255,255,255,.03));
        }

        .mobile-brand{
            font-weight: 800;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mobile-meta{
            color: var(--muted);
            font-size: .88rem;
            white-space: nowrap;
        }

        .mobile-panel{
            display: none;
            position: fixed;
            inset: 0 auto 0 0;
            width: min(82vw, 320px);
            background: linear-gradient(180deg, rgba(20,17,24,.98), rgba(13,12,17,.96));
            z-index: 45;
            box-shadow: 10px 0 32px rgba(0,0,0,.32);
            transform: translateX(-105%);
            transition: transform .26s ease;
        }

        .mobile-panel .sidebar-inner{
            padding-top: 16px;
        }

        .nav-backdrop{
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,.45);
            opacity: 0;
            visibility: hidden;
            transition: opacity .22s ease, visibility .22s ease;
            z-index: 40;
        }

        body.nav-open{
            overflow: hidden;
        }

        body.nav-open .mobile-panel{
            transform: translateX(0);
        }

        body.nav-open .nav-backdrop{
            opacity: 1;
            visibility: visible;
        }

        main{
            padding: 28px 0 18px;
        }

        .site-section{
            padding: 22px 0;
            scroll-margin-top: 90px;
        }

        .section-card,
        .hero-card,
        .panel-card,
        .faq-card,
        .cta-card{
            position: relative;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            background:
                linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015)),
                linear-gradient(180deg, var(--panel), var(--panel-2));
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .section-card{
            padding: 28px;
        }

        .section-card.alt{
            background:
                linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.012)),
                linear-gradient(180deg, #19161d, #141118);
        }

        .section-head{
            display: grid;
            gap: 10px;
            margin-bottom: 20px;
        }

        .eyebrow,
        .section-kicker,
        .mini-kicker{
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #f1d7df;
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before,
        .mini-kicker::before{
            content: "";
            width: 9px;
            height: 9px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            box-shadow: 0 0 0 5px rgba(226,95,143,.12);
            flex: 0 0 auto;
        }

        .section-head h2,
        .section-card h2{
            margin: 0;
            font-size: clamp(1.45rem, 2.2vw, 2.1rem);
            line-height: 1.28;
            letter-spacing: -.02em;
        }

        .section-head p,
        .section-card .lead{
            margin: 0;
            max-width: 72ch;
            color: var(--muted);
            font-size: 1rem;
        }

        .hero-wrap{
            padding-top: 0;
        }

        .hero-card{
            padding: 30px;
            background:
                radial-gradient(circle at 18% 18%, rgba(157,107,255,.19), transparent 26%),
                radial-gradient(circle at 88% 10%, rgba(226,95,143,.16), transparent 25%),
                linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015)),
                linear-gradient(180deg, #1d1822, #17131a);
        }

        .hero-grid{
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) minmax(320px, .92fr);
            gap: 24px;
            align-items: center;
        }

        .hero-title{
            margin: 10px 0 0;
            font-size: clamp(2rem, 4vw, 3.4rem);
            line-height: 1.1;
            letter-spacing: -.04em;
        }

        .hero-copy{
            margin: 18px 0 0;
            max-width: 60ch;
            color: var(--muted);
            font-size: 1.05rem;
        }

        .hero-actions{
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .btn{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 18px;
            border-radius: 14px;
            border: 1px solid transparent;
            font-weight: 700;
            letter-spacing: .01em;
            cursor: pointer;
            user-select: none;
            box-shadow: none;
            transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease, opacity .2s ease;
        }

        .btn:hover,
        .btn:focus-visible{
            transform: translateY(-2px);
            box-shadow: 0 16px 30px rgba(0,0,0,.22);
        }

        .btn:active{
            transform: translateY(0);
            box-shadow: 0 10px 18px rgba(0,0,0,.18);
        }

        .btn-primary{
            color: #fff;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            border-color: rgba(255,255,255,.04);
        }

        .btn-primary:hover,
        .btn-primary:focus-visible{
            color: #fff;
            background: linear-gradient(135deg, #ef709c, #ae7cff);
        }

        .btn-secondary{
            color: var(--text);
            background: rgba(255,255,255,.02);
            border-color: rgba(255,255,255,.10);
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible{
            border-color: rgba(226,95,143,.35);
            background: rgba(226,95,143,.08);
            color: var(--text);
        }

        .btn-ghost{
            color: var(--muted);
            background: transparent;
            border-color: rgba(255,255,255,.08);
        }

        .btn-ghost:hover,
        .btn-ghost:focus-visible{
            color: var(--text);
            background: rgba(255,255,255,.03);
        }

        .hero-badges{
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .badge{
            display: inline-flex;
            align-items: center;
            gap: 8px;
            min-height: 34px;
            padding: 0 12px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,.08);
            color: var(--text);
            background: rgba(255,255,255,.03);
            font-size: .92rem;
            white-space: nowrap;
        }

        .badge-accent{
            border-color: rgba(226,95,143,.28);
            background: rgba(226,95,143,.12);
            color: #ffd5e1;
        }

        .badge-warm{
            border-color: rgba(240,180,90,.26);
            background: rgba(240,180,90,.12);
            color: #ffe6b9;
        }

        .hero-side{
            display: grid;
            gap: 14px;
        }

        .hero-cover{
            min-height: 250px;
            padding: 22px;
            border-radius: 24px;
            border: 1px solid rgba(255,255,255,.08);
            background:
                radial-gradient(circle at 82% 14%, rgba(240,180,90,.20), transparent 20%),
                radial-gradient(circle at 12% 18%, rgba(157,107,255,.24), transparent 24%),
                linear-gradient(145deg, rgba(226,95,143,.15), rgba(17,15,19,.08)),
                linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 16px;
            box-shadow: var(--shadow-soft);
        }

        .cover-title{
            display: grid;
            gap: 6px;
        }

        .cover-title strong{
            font-size: clamp(1.5rem, 2.4vw, 2.2rem);
            line-height: 1.15;
            letter-spacing: -.03em;
        }

        .cover-title span{
            color: #d7cfd6;
            font-size: .96rem;
        }

        .cover-meta{
            display: grid;
            gap: 10px;
        }

        .cover-row{
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 11px 12px;
            border-radius: 14px;
            background: rgba(0,0,0,.18);
            border: 1px solid rgba(255,255,255,.06);
            color: var(--muted);
        }

        .cover-row strong{
            color: var(--text);
        }

        .mini-grid{
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 12px;
        }

        .mini-card{
            padding: 16px 14px;
            border-radius: 18px;
            border: 1px solid rgba(255,255,255,.07);
            background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.016));
        }

        .mini-card span{
            display: block;
            color: var(--soft);
            font-size: .84rem;
            margin-bottom: 8px;
        }

        .mini-card strong{
            display: block;
            color: var(--text);
            font-size: 1rem;
            line-height: 1.4;
        }

        .mini-card em{
            display: block;
            color: var(--muted);
            font-style: normal;
            font-size: .9rem;
            margin-top: 6px;
        }

        .feature-grid,
        .metric-grid,
        .steps-grid,
        .voice-grid,
        .trust-grid{
            display: grid;
            gap: 14px;
        }

        .feature-grid{
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }

        .metric-grid{
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }

        .steps-grid{
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }

        .voice-grid{
            grid-template-columns: repeat(3, minmax(0, 1fr));
        }

        .trust-grid{
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }

        .info-card,
        .metric-card,
        .step-card,
        .voice-card,
        .trust-card{
            height: 100%;
            padding: 18px 16px;
            border-radius: 18px;
            border: 1px solid rgba(255,255,255,.07);
            background: linear-gradient(180deg, rgba(255,255,255,.034), rgba(255,255,255,.016));
            box-shadow: 0 12px 26px rgba(0,0,0,.14);
            transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
        }

        .info-card:hover,
        .metric-card:hover,
        .step-card:hover,
        .voice-card:hover,
        .trust-card:hover,
        .post-card:hover{
            transform: translateY(-3px);
            border-color: rgba(226,95,143,.26);
            box-shadow: 0 18px 34px rgba(0,0,0,.22);
        }

        .info-card h3,
        .step-card h3,
        .trust-card h3,
        .voice-card h3{
            margin: 10px 0 8px;
            font-size: 1.02rem;
            line-height: 1.35;
        }

        .info-card p,
        .step-card p,
        .trust-card p,
        .voice-card p{
            margin: 0;
            color: var(--muted);
            font-size: .95rem;
        }

        .icon-dot{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(226,95,143,.18), rgba(157,107,255,.18));
            border: 1px solid rgba(255,255,255,.08);
            color: #fff;
            font-weight: 800;
        }

        .metric-number{
            font-size: 1.7rem;
            font-weight: 900;
            line-height: 1;
            letter-spacing: -.03em;
            color: #fff;
        }

        .metric-label{
            margin-top: 10px;
            color: var(--muted);
            font-size: .95rem;
        }

        .metric-card{
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 132px;
        }

        .metric-card .badge{
            width: fit-content;
        }

        .latest-layout{
            display: grid;
            grid-template-columns: minmax(0, 1.4fr) minmax(280px, .86fr);
            gap: 18px;
            align-items: start;
        }

        .post-list{
            display: grid;
            gap: 14px;
        }

        .post-card{
            display: block;
            padding: 18px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,.07);
            background:
                linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.014));
            box-shadow: 0 12px 24px rgba(0,0,0,.14);
        }

        .post-top{
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 10px;
        }

        .post-time{
            color: var(--soft);
            font-size: .9rem;
            white-space: nowrap;
        }

        .post-card h3{
            margin: 0;
            font-size: 1.12rem;
            line-height: 1.4;
        }

        .post-card p{
            margin: 10px 0 14px;
            color: var(--muted);
            font-size: .96rem;
        }

        .post-footer{
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--accent);
            font-weight: 700;
            font-size: .95rem;
        }

        .post-card:hover .post-footer{
            color: #ffd6e3;
        }

        .latest-side{
            position: sticky;
            top: 18px;
            display: grid;
            gap: 14px;
        }

        .aside-card{
            padding: 18px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,.07);
            background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.014));
            box-shadow: 0 12px 24px rgba(0,0,0,.14);
        }

        .aside-card h3{
            margin: 0 0 10px;
            font-size: 1.04rem;
        }

        .aside-card p{
            margin: 0;
            color: var(--muted);
            font-size: .95rem;
        }

        .check-list{
            margin: 14px 0 0;
            padding: 0;
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .check-list li{
            position: relative;
            padding-left: 22px;
            color: var(--muted);
            font-size: .95rem;
        }

        .check-list li::before{
            content: "●";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-3);
            font-size: .82rem;
            line-height: 1.8;
        }

        .step-card{
            display: grid;
            align-content: start;
            min-height: 170px;
        }

        .step-index{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(226,95,143,.18), rgba(240,180,90,.14));
            border: 1px solid rgba(255,255,255,.08);
            color: #fff;
            font-weight: 800;
        }

        .quote-head{
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 12px;
        }

        .stars{
            display: inline-flex;
            gap: 4px;
            color: #ffd77a;
            font-size: .92rem;
            letter-spacing: 2px;
        }

        .voice-card blockquote{
            margin: 0;
            color: var(--text);
            font-size: 1rem;
            line-height: 1.75;
        }

        .voice-card footer{
            margin-top: 12px;
            color: var(--muted);
            font-size: .92rem;
        }

        .faq-list{
            display: grid;
            gap: 12px;
        }

        .faq-card{
            padding: 0;
        }

        .faq-card summary{
            list-style: none;
            cursor: pointer;
            padding: 18px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 700;
            outline: none;
        }

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

        .faq-card summary::after{
            content: "+";
            width: 28px;
            height: 28px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255,255,255,.08);
            background: rgba(255,255,255,.03);
            color: var(--text);
            flex: 0 0 auto;
            transition: transform .2s ease, background-color .2s ease;
        }

        .faq-card[open] summary::after{
            content: "–";
            background: rgba(226,95,143,.12);
            border-color: rgba(226,95,143,.24);
        }

        .faq-body{
            padding: 0 18px 18px;
            color: var(--muted);
        }

        .cta-card{
            padding: 26px;
            background:
                radial-gradient(circle at 85% 20%, rgba(240,180,90,.14), transparent 22%),
                radial-gradient(circle at 18% 0%, rgba(226,95,143,.18), transparent 22%),
                linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015)),
                linear-gradient(180deg, #1c1820, #151219);
        }

        .cta-grid{
            display: grid;
            grid-template-columns: minmax(0, 1.3fr) auto;
            gap: 18px;
            align-items: center;
        }

        .cta-copy h2{
            margin: 0;
            font-size: clamp(1.5rem, 2.8vw, 2.2rem);
            line-height: 1.25;
        }

        .cta-copy p{
            margin: 12px 0 0;
            max-width: 64ch;
            color: var(--muted);
        }

        .cta-actions{
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: flex-end;
        }

        .site-footer{
            margin: 14px 0 28px;
        }

        .footer-card{
            padding: 22px 24px;
            border-radius: 22px;
            border: 1px solid rgba(255,255,255,.07);
            background:
                linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
            box-shadow: var(--shadow-soft);
        }

        .footer-grid{
            display: grid;
            grid-template-columns: minmax(0, 1.3fr) auto;
            gap: 18px;
            align-items: start;
        }

        .footer-brand{
            display: grid;
            gap: 10px;
        }

        .footer-brand strong{
            font-size: 1.08rem;
        }

        .footer-brand p{
            margin: 0;
            color: var(--muted);
            max-width: 70ch;
        }

        .footer-links{
            display: flex;
            flex-wrap: wrap;
            gap: 10px 14px;
            justify-content: flex-end;
        }

        .footer-links a{
            color: var(--muted);
            font-size: .95rem;
        }

        .footer-links a:hover,
        .footer-links a:focus-visible{
            color: #fff;
        }

        .footer-meta{
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid rgba(255,255,255,.07);
            color: var(--soft);
            font-size: .9rem;
        }

        .empty-state{
            padding: 24px 18px;
            border-radius: 18px;
            border: 1px dashed rgba(255,255,255,.14);
            background: rgba(255,255,255,.02);
            color: var(--text);
            text-align: center;
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible,
        input:focus-visible,
        textarea:focus-visible{
            outline: 2px solid rgba(226,95,143,.6);
            outline-offset: 3px;
        }

        @media (max-width: 1160px){
            .feature-grid,
            .metric-grid,
            .steps-grid,
            .voice-grid,
            .trust-grid{
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
            .latest-layout,
            .hero-grid,
            .cta-grid,
            .footer-grid{
                grid-template-columns: 1fr;
            }
            .cta-actions,
            .footer-links{
                justify-content: flex-start;
            }
            .latest-side{
                position: static;
            }
        }

        @media (max-width: 1024px){
            .site-sidebar{
                display: none;
            }
            .site-main{
                margin-left: 0;
                padding-top: var(--topbar);
            }
            .mobile-topbar{
                display: flex;
            }
            .mobile-panel{
                display: block;
            }
        }

        @media (max-width: 768px){
            .grid-container{
                width: min(var(--container), calc(100% - 20px));
            }
            main{
                padding-top: 12px;
            }
            .section-card,
            .hero-card,
            .cta-card,
            .footer-card{
                border-radius: 20px;
            }
            .section-card{
                padding: 22px 18px;
            }
            .hero-card{
                padding: 22px 18px;
            }
            .hero-title{
                font-size: clamp(1.8rem, 9vw, 2.6rem);
            }
            .hero-copy{
                font-size: 1rem;
            }
            .mini-grid,
            .feature-grid,
            .metric-grid,
            .steps-grid,
            .voice-grid,
            .trust-grid{
                grid-template-columns: 1fr;
            }
            .info-card,
            .metric-card,
            .step-card,
            .voice-card,
            .trust-card,
            .post-card,
            .aside-card{
                border-radius: 18px;
            }
            .post-top{
                flex-direction: column;
                align-items: flex-start;
            }
            .mobile-meta{
                display: none;
            }
            .hero-actions,
            .hero-badges,
            .cta-actions{
                width: 100%;
            }
            .btn{
                width: 100%;
            }
            .btn + .btn{
                margin-top: 0;
            }
            .post-footer{
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px){
            .mobile-topbar{
                padding: 0 12px;
            }
            .mobile-brand{
                max-width: 44vw;
            }
            .brand-mark{
                font-size: 1.08rem;
            }
            .brand-sub{
                font-size: .9rem;
            }
            .section-head p,
            .section-card .lead,
            .post-card p,
            .voice-card blockquote,
            .aside-card p,
            .faq-body,
            .footer-brand p{
                font-size: .94rem;
            }
        }

/* roulang page: article */
:root{
            --bg:#110f13;
            --bg-2:#16131a;
            --panel:#1d1821;
            --panel-2:#251f29;
            --panel-3:#2c2430;
            --text:#f4eee8;
            --muted:#b7aeb7;
            --soft:#8f8591;
            --line:#342d37;
            --line-2:rgba(226,95,143,.26);
            --accent:#e25f8f;
            --accent-2:#9d6bff;
            --accent-3:#f0b45a;
            --success:#4fd1b7;
            --shadow:0 18px 44px rgba(0,0,0,.30);
            --shadow-soft:0 12px 30px rgba(0,0,0,.22);
            --radius:22px;
            --radius-sm:16px;
            --radius-xs:12px;
            --space:24px;
            --space-lg:34px;
            --sidebar:288px;
            --topbar:72px;
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            min-height:100vh;
            background:
                radial-gradient(circle at 20% 10%, rgba(157,107,255,.12), transparent 30%),
                radial-gradient(circle at 85% 84%, rgba(226,95,143,.12), transparent 24%),
                linear-gradient(180deg, #0f0d12 0%, #121016 38%, #0f0d12 100%);
            color:var(--text);
            font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
            line-height:1.75;
            overflow-x:hidden;
            -webkit-font-smoothing:antialiased;
            text-rendering:optimizeLegibility;
        }
        body::before{
            content:"";
            position:fixed;
            inset:0;
            pointer-events:none;
            background:
                linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
                linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px);
            background-size:78px 78px;
            mask-image:linear-gradient(180deg, rgba(0,0,0,.46), transparent 78%);
            opacity:.18;
            z-index:0;
        }
        ::selection{background:rgba(226,95,143,.35); color:#fff}
        a{
            color:inherit;
            text-decoration:none;
            transition:color .2s ease, transform .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, opacity .2s ease;
        }
        a:hover{color:var(--text)}
        img,svg{max-width:100%; display:block}
        button,input,textarea,select{font:inherit}
        p{margin:0 0 1em}
        h1,h2,h3,h4,h5,h6{
            margin:0;
            line-height:1.18;
            letter-spacing:.01em;
        }
        ul,ol{margin:0; padding:0; list-style:none}
        .grid-container{
            width:min(var(--container), calc(100% - 32px));
            max-width:var(--container);
        }
        .site-backdrop{
            position:fixed;
            inset:0;
            background:rgba(8,7,10,.54);
            backdrop-filter:blur(2px);
            opacity:0;
            pointer-events:none;
            transition:opacity .25s ease;
            z-index:54;
        }
        .mobile-topbar{
            position:fixed;
            inset:0 0 auto 0;
            height:var(--topbar);
            display:none;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            padding:0 16px;
            background:rgba(15,13,18,.92);
            border-bottom:1px solid rgba(255,255,255,.06);
            backdrop-filter:blur(14px);
            z-index:70;
        }
        .topbar-group{
            display:flex;
            align-items:center;
            gap:10px;
            min-width:0;
        }
        .brand-mark{
            display:inline-flex;
            align-items:center;
            gap:10px;
            font-size:1.12rem;
            font-weight:800;
            letter-spacing:.01em;
            white-space:nowrap;
        }
        .brand-mark::before{
            content:"";
            width:11px;
            height:11px;
            border-radius:50%;
            background:linear-gradient(135deg, var(--accent), var(--accent-2));
            box-shadow:0 0 0 6px rgba(226,95,143,.12);
            flex:0 0 auto;
        }
        .topbar-action,
        .nav-toggle,
        .nav-close,
        .btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            border-radius:16px;
            border:1px solid transparent;
            cursor:pointer;
            transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease, opacity .2s ease;
        }
        .nav-toggle,
        .nav-close{
            width:44px;
            height:44px;
            border-color:rgba(255,255,255,.08);
            background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
            color:var(--text);
            box-shadow:0 10px 22px rgba(0,0,0,.18);
            flex:0 0 auto;
        }
        .topbar-action{
            padding:11px 14px;
            border-color:rgba(255,255,255,.08);
            color:var(--text);
            background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
            font-size:.94rem;
            white-space:nowrap;
        }
        .nav-toggle:hover,.nav-toggle:focus-visible,
        .nav-close:hover,.nav-close:focus-visible,
        .topbar-action:hover,.topbar-action:focus-visible,
        .btn:hover,.btn:focus-visible{
            transform:translateY(-1px);
            box-shadow:0 14px 26px rgba(0,0,0,.22);
            color:var(--text);
            outline:none;
        }
        .site-shell{
            position:relative;
            z-index:1;
            min-height:100vh;
        }
        .site-sidebar{
            position:fixed;
            inset:0 auto 0 0;
            width:var(--sidebar);
            padding:18px 16px 18px;
            background:
                linear-gradient(180deg, rgba(29,24,33,.96), rgba(20,17,24,.96));
            border-right:1px solid rgba(255,255,255,.06);
            box-shadow:inset -1px 0 0 rgba(255,255,255,.03);
            backdrop-filter:blur(16px);
            z-index:60;
            display:flex;
            flex-direction:column;
            gap:16px;
        }
        .sidebar-brand{
            display:flex;
            flex-direction:column;
            gap:8px;
            padding:16px 14px;
            border:1px solid rgba(255,255,255,.06);
            border-radius:var(--radius);
            background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
            box-shadow:var(--shadow-soft);
        }
        .brand-sub{
            color:var(--muted);
            font-size:.94rem;
            line-height:1.58;
        }
        .site-nav{
            display:flex;
            flex-direction:column;
            gap:10px;
        }
        .nav-label{
            padding:0 14px 2px;
            color:var(--soft);
            font-size:.84rem;
            letter-spacing:.08em;
            text-transform:uppercase;
        }
        .nav-link{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            padding:13px 14px;
            border-radius:16px;
            border:1px solid transparent;
            color:var(--muted);
            background:transparent;
        }
        .nav-link:hover,
        .nav-link:focus-visible{
            background:rgba(255,255,255,.04);
            border-color:rgba(255,255,255,.08);
            color:var(--text);
            transform:translateX(2px);
            outline:none;
        }
        .nav-link.is-active{
            color:var(--text);
            background:linear-gradient(135deg, rgba(226,95,143,.16), rgba(157,107,255,.16));
            border-color:rgba(226,95,143,.22);
            box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
        }
        .nav-link span:first-child{
            font-weight:700;
            letter-spacing:.01em;
        }
        .nav-link span:last-child{
            color:var(--soft);
            font-size:.88rem;
            white-space:nowrap;
        }
        .side-meta{
            margin-top:auto;
            display:grid;
            gap:12px;
        }
        .mini-card{
            padding:14px;
            border-radius:var(--radius-sm);
            background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
            border:1px solid rgba(255,255,255,.06);
            box-shadow:var(--shadow-soft);
        }
        .mini-card .mini-title{
            color:var(--soft);
            font-size:.84rem;
            letter-spacing:.04em;
            margin-bottom:6px;
        }
        .mini-card .mini-value{
            color:var(--text);
            font-size:.96rem;
            line-height:1.55;
        }
        .site-main{
            margin-left:var(--sidebar);
            min-height:100vh;
            position:relative;
            z-index:1;
        }
        .main-inner{
            padding:24px 18px 26px;
        }
        .panel-card{
            border:1px solid rgba(255,255,255,.07);
            background:
                linear-gradient(180deg, rgba(37,31,41,.95), rgba(23,20,28,.96));
            border-radius:var(--radius);
            box-shadow:var(--shadow);
        }
        .panel-pad{
            padding:24px;
        }
        .article-banner{
            display:grid;
            grid-template-columns:minmax(0,1fr) 300px;
            gap:18px;
            padding:24px;
            margin-bottom:18px;
            background:
                linear-gradient(135deg, rgba(226,95,143,.14), rgba(157,107,255,.10) 52%, rgba(255,255,255,.02)),
                linear-gradient(180deg, rgba(37,31,41,.95), rgba(23,20,28,.96));
        }
        .eyebrow{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:7px 12px;
            border-radius:999px;
            border:1px solid rgba(226,95,143,.28);
            background:rgba(226,95,143,.08);
            color:#f3d8e4;
            font-size:.86rem;
            letter-spacing:.02em;
        }
        .eyebrow::before{
            content:"";
            width:7px;
            height:7px;
            border-radius:50%;
            background:var(--accent);
            box-shadow:0 0 0 4px rgba(226,95,143,.14);
        }
        .banner-copy{
            display:flex;
            flex-direction:column;
            gap:14px;
        }
        .banner-copy h1{
            font-size:clamp(2rem, 3vw, 3.25rem);
            line-height:1.1;
            letter-spacing:-.02em;
            max-width:13ch;
        }
        .lede{
            color:var(--muted);
            font-size:1.02rem;
            line-height:1.9;
            max-width:70ch;
        }
        .chip-row{
            display:flex;
            flex-wrap:wrap;
            gap:10px;
        }
        .chip,
        .tag,
        .badge{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:8px 12px;
            border-radius:999px;
            border:1px solid rgba(255,255,255,.08);
            background:rgba(255,255,255,.03);
            color:var(--muted);
            font-size:.86rem;
            line-height:1;
        }
        .chip strong,.tag strong,.badge strong{color:var(--text)}
        .banner-side{
            display:grid;
            gap:12px;
            align-content:start;
        }
        .stat-box{
            padding:16px;
            border-radius:var(--radius-sm);
            border:1px solid rgba(255,255,255,.08);
            background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
        }
        .stat-box span{
            display:block;
            color:var(--soft);
            font-size:.84rem;
            margin-bottom:8px;
        }
        .stat-box strong{
            display:block;
            color:var(--text);
            font-size:1.04rem;
            line-height:1.55;
        }
        .stat-box.accent{
            border-color:rgba(226,95,143,.22);
            background:linear-gradient(135deg, rgba(226,95,143,.14), rgba(157,107,255,.10));
        }
        .article-layout{
            margin-top:0;
            align-items:start;
        }
        .article-layout > .cell{
            padding-bottom:18px;
        }
        .sticky-column{
            position:sticky;
            top:18px;
            display:grid;
            gap:14px;
        }
        .section-head{
            display:flex;
            flex-direction:column;
            gap:10px;
            margin-bottom:18px;
        }
        .section-head h2,
        .section-head h3{
            font-size:1.3rem;
            line-height:1.25;
        }
        .section-sub{
            color:var(--muted);
            font-size:.98rem;
            line-height:1.8;
            max-width:64ch;
        }
        .summary-card,
        .info-card,
        .related-card,
        .faq-card,
        .cta-card,
        .article-card,
        .empty-state{
            padding:24px;
        }
        .summary-card + .article-card,
        .article-card + .related-card,
        .related-card + .faq-card{
            margin-top:18px;
        }
        .info-card h2,
        .related-card h2,
        .faq-card h2,
        .cta-card h2{
            font-size:1.08rem;
            margin-bottom:14px;
        }
        .summary-points{
            display:flex;
            flex-wrap:wrap;
            gap:10px;
            margin-top:16px;
        }
        .summary-points .tag{
            background:rgba(255,255,255,.025);
        }
        .info-list{
            display:grid;
            gap:12px;
        }
        .info-list li{
            display:flex;
            flex-direction:column;
            gap:6px;
            padding:13px 14px;
            border-radius:14px;
            background:rgba(255,255,255,.03);
            border:1px solid rgba(255,255,255,.06);
        }
        .info-list li span{
            color:var(--soft);
            font-size:.84rem;
        }
        .info-list li b{
            color:var(--text);
            font-weight:700;
            line-height:1.6;
        }
        .toc-list{
            display:grid;
            gap:8px;
        }
        .toc-list a{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            padding:12px 13px;
            border-radius:14px;
            border:1px solid rgba(255,255,255,.06);
            background:rgba(255,255,255,.03);
            color:var(--muted);
        }
        .toc-list a:hover,
        .toc-list a:focus-visible{
            border-color:rgba(226,95,143,.22);
            background:rgba(226,95,143,.08);
            color:var(--text);
            transform:translateX(2px);
            outline:none;
        }
        .article-card{
            overflow:hidden;
        }
        .article-card-top{
            display:flex;
            flex-wrap:wrap;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            padding-bottom:16px;
            margin-bottom:18px;
            border-bottom:1px solid rgba(255,255,255,.06);
        }
        .meta-row{
            display:flex;
            flex-wrap:wrap;
            gap:10px;
        }
        .meta-row .chip{
            background:rgba(255,255,255,.025);
        }
        .reading-meter{
            width:100%;
            height:4px;
            border-radius:999px;
            background:rgba(255,255,255,.06);
            overflow:hidden;
        }
        .reading-meter span{
            display:block;
            height:100%;
            width:0%;
            background:linear-gradient(90deg, var(--accent), var(--accent-2), var(--success));
            border-radius:inherit;
            transition:width .12s linear;
        }
        .article-body{
            color:#efe8e2;
            font-size:1.04rem;
            line-height:1.95;
            letter-spacing:.01em;
        }
        .article-body :where(p,ul,ol,blockquote,pre,figure,table){
            margin:0 0 1.1em;
        }
        .article-body :where(h2){
            margin:1.8em 0 .85em;
            font-size:1.42rem;
        }
        .article-body :where(h3){
            margin:1.55em 0 .75em;
            font-size:1.16rem;
        }
        .article-body :where(h4){
            margin:1.25em 0 .6em;
            font-size:1.03rem;
        }
        .article-body :where(ul,ol){
            padding-left:1.25em;
        }
        .article-body :where(ul){
            list-style:disc;
        }
        .article-body :where(ol){
            list-style:decimal;
        }
        .article-body :where(li){
            margin:.45em 0;
        }
        .article-body :where(blockquote){
            padding:16px 18px;
            border-left:4px solid var(--accent);
            background:rgba(226,95,143,.08);
            border-radius:0 14px 14px 0;
            color:#f2e8ea;
        }
        .article-body :where(code){
            padding:.18em .42em;
            border-radius:8px;
            background:rgba(255,255,255,.06);
            color:#ffd9e6;
            font-size:.94em;
        }
        .article-body :where(pre){
            padding:18px;
            border-radius:16px;
            overflow:auto;
            background:#121017;
            border:1px solid rgba(255,255,255,.08);
        }
        .article-body :where(pre code){
            padding:0;
            background:transparent;
            color:inherit;
            white-space:pre;
        }
        .article-body :where(a){
            color:#ffd2e1;
            text-decoration:underline;
            text-underline-offset:2px;
        }
        .article-body :where(a:hover){
            color:#fff;
        }
        .article-body :where(img){
            border-radius:18px;
            border:1px solid rgba(255,255,255,.08);
            box-shadow:0 12px 30px rgba(0,0,0,.24);
        }
        .article-body :where(table){
            width:100%;
            border-collapse:collapse;
            overflow:hidden;
            border-radius:16px;
            border:1px solid rgba(255,255,255,.08);
            background:rgba(255,255,255,.02);
        }
        .article-body :where(th,td){
            padding:12px 14px;
            border-bottom:1px solid rgba(255,255,255,.06);
            text-align:left;
            vertical-align:top;
        }
        .article-body :where(th){
            background:rgba(255,255,255,.04);
            color:var(--text);
        }
        .continue-card{
            display:grid;
            gap:16px;
        }
        .link-grid{
            display:grid;
            grid-template-columns:repeat(3, minmax(0,1fr));
            gap:12px;
        }
        .link-tile{
            display:flex;
            flex-direction:column;
            gap:8px;
            padding:16px;
            border-radius:18px;
            border:1px solid rgba(255,255,255,.08);
            background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
            min-height:112px;
        }
        .link-tile:hover,
        .link-tile:focus-visible{
            transform:translateY(-2px);
            border-color:rgba(226,95,143,.22);
            box-shadow:0 16px 30px rgba(0,0,0,.22);
            outline:none;
        }
        .link-tile .tile-title{
            color:var(--text);
            font-weight:800;
            font-size:1rem;
        }
        .link-tile .tile-desc{
            color:var(--muted);
            font-size:.93rem;
            line-height:1.65;
        }
        .btn{
            gap:10px;
            padding:12px 16px;
            font-weight:700;
            letter-spacing:.01em;
        }
        .btn-primary{
            color:#fff;
            background:linear-gradient(135deg, var(--accent), var(--accent-2));
            box-shadow:0 16px 32px rgba(226,95,143,.20);
        }
        .btn-primary:hover,.btn-primary:focus-visible{
            border-color:transparent;
            background:linear-gradient(135deg, #ee769d, #ae7cff);
        }
        .btn-secondary{
            color:var(--text);
            background:rgba(255,255,255,.03);
            border-color:rgba(255,255,255,.10);
        }
        .btn-secondary:hover,.btn-secondary:focus-visible{
            background:rgba(255,255,255,.06);
            border-color:rgba(255,255,255,.16);
        }
        .btn-row{
            display:flex;
            flex-wrap:wrap;
            gap:12px;
            align-items:center;
        }
        .faq-list{
            display:grid;
            gap:12px;
        }
        .faq-list details{
            border:1px solid rgba(255,255,255,.08);
            border-radius:18px;
            background:rgba(255,255,255,.03);
            overflow:hidden;
        }
        .faq-list summary{
            cursor:pointer;
            list-style:none;
            padding:16px 18px;
            font-weight:700;
            color:var(--text);
            position:relative;
        }
        .faq-list summary::-webkit-details-marker{display:none}
        .faq-list summary::after{
            content:"+";
            position:absolute;
            right:18px;
            top:50%;
            transform:translateY(-50%);
            color:var(--soft);
            font-size:1.2rem;
        }
        .faq-list details[open] summary::after{content:"–"}
        .faq-list .faq-body{
            padding:0 18px 18px;
            color:var(--muted);
            line-height:1.86;
        }
        .cta-card{
            display:grid;
            gap:18px;
            background:
                linear-gradient(135deg, rgba(226,95,143,.14), rgba(157,107,255,.08)),
                linear-gradient(180deg, rgba(37,31,41,.95), rgba(23,20,28,.96));
        }
        .cta-card p{
            color:var(--muted);
            margin:0;
            line-height:1.8;
        }
        .empty-state{
            display:grid;
            gap:16px;
            align-content:start;
            min-height:42vh;
        }
        .empty-state h1{
            font-size:clamp(1.9rem, 3vw, 2.7rem);
            line-height:1.12;
        }
        .empty-state p{
            color:var(--muted);
            max-width:58ch;
            line-height:1.9;
        }
        .site-footer{
            margin:8px 18px 0;
            padding:22px 24px 26px;
            border-top:1px solid rgba(255,255,255,.06);
            color:var(--muted);
        }
        .footer-grid{
            display:grid;
            grid-template-columns:minmax(0,1.3fr) minmax(0,.9fr);
            gap:18px;
            align-items:start;
        }
        .footer-brand{
            color:var(--text);
            font-size:1.08rem;
            font-weight:800;
            margin-bottom:10px;
        }
        .footer-note{
            line-height:1.8;
            max-width:60ch;
        }
        .footer-links{
            display:flex;
            flex-wrap:wrap;
            gap:10px;
            justify-content:flex-end;
        }
        .footer-links a{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:10px 12px;
            border-radius:14px;
            border:1px solid rgba(255,255,255,.08);
            background:rgba(255,255,255,.03);
            color:var(--muted);
        }
        .footer-links a:hover,
        .footer-links a:focus-visible{
            color:var(--text);
            border-color:rgba(226,95,143,.22);
            background:rgba(226,95,143,.08);
            transform:translateY(-1px);
            outline:none;
        }
        .footer-bottom{
            margin-top:18px;
            padding-top:16px;
            border-top:1px solid rgba(255,255,255,.06);
            display:flex;
            flex-wrap:wrap;
            align-items:center;
            justify-content:space-between;
            gap:12px;
            font-size:.92rem;
        }
        .site-sidebar,
        .panel-card,
        .btn,
        .nav-link,
        .link-tile,
        .faq-list details,
        .footer-links a,
        .topbar-action,
        .nav-toggle,
        .nav-close{
            -webkit-tap-highlight-color:transparent;
        }
        :focus-visible{
            outline:2px solid rgba(240,180,90,.78);
            outline-offset:2px;
        }
        @media (max-width: 1180px){
            :root{--sidebar:262px}
            .article-banner{grid-template-columns:1fr 260px}
            .link-grid{grid-template-columns:repeat(2, minmax(0,1fr))}
        }
        @media (max-width: 1024px){
            .footer-grid{grid-template-columns:1fr}
            .footer-links{justify-content:flex-start}
            .article-banner{grid-template-columns:1fr}
            .sticky-column{position:static}
        }
        @media (max-width: 768px){
            :root{--topbar:68px}
            body.menu-open{overflow:hidden}
            .mobile-topbar{display:flex}
            .site-sidebar{
                width:min(88vw, 320px);
                transform:translateX(-104%);
                transition:transform .28s ease;
                box-shadow:18px 0 42px rgba(0,0,0,.28);
            }
            body.menu-open .site-sidebar{transform:translateX(0)}
            body.menu-open .site-backdrop{
                opacity:1;
                pointer-events:auto;
            }
            .site-main{
                margin-left:0;
                padding-top:var(--topbar);
            }
            .main-inner{
                padding:18px 14px 22px;
            }
            .panel-pad,
            .article-banner,
            .summary-card,
            .info-card,
            .related-card,
            .faq-card,
            .cta-card,
            .article-card,
            .empty-state,
            .site-footer{
                padding:18px;
            }
            .site-footer{margin:8px 14px 0}
            .link-grid{grid-template-columns:1fr}
            .btn-row .btn{width:100%}
            .footer-bottom{
                flex-direction:column;
                align-items:flex-start;
            }
            .banner-copy h1{max-width:100%}
        }
        @media (max-width: 520px){
            .brand-mark{font-size:1rem}
            .nav-link{
                padding:12px 13px;
            }
            .nav-link span:last-child{display:none}
            .chip-row,.meta-row,.summary-points,.btn-row{gap:8px}
            .article-body{
                font-size:1rem;
                line-height:1.9;
            }
            .article-body :where(h2){font-size:1.28rem}
            .article-body :where(h3){font-size:1.11rem}
        }