/* roulang page: index */
:root {
            --ink: #202923;
            --ink-soft: #455149;
            --muted: #747d75;
            --paper: #f7f6f1;
            --white: #fff;
            --line: #e2e4dd;
            --coral: #e45e48;
            --coral-dark: #c94a38;
            --coral-pale: #fce9e3;
            --green: #315f4c;
            --green-pale: #e9f0e9;
            --gold: #d8a64f;
            --radius: 12px;
            --radius-small: 8px;
            --shadow: 0 12px 32px rgba(31, 42, 34, .08);
            --container: 1220px;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; scroll-padding-top: 90px; }
        body {
            margin: 0;
            background: var(--paper);
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            line-height: 1.78;
            -webkit-font-smoothing: antialiased;
        }
        img { display: block; max-width: 100%; }
        a { color: inherit; text-decoration: none; }
        button, input { font: inherit; }
        button, a, input { -webkit-tap-highlight-color: transparent; }
        a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
            outline: 3px solid rgba(228, 94, 72, .45);
            outline-offset: 3px;
        }
        .container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
        .site-header {
            position: sticky;
            z-index: 50;
            top: 0;
            background: rgba(247, 246, 241, .96);
            border-bottom: 1px solid rgba(226, 228, 221, .9);
            backdrop-filter: blur(12px);
        }
        .topbar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
        .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; color: var(--ink); font-size: 18px; font-weight: 800; }
        .brand-mark {
            display: grid; width: 36px; height: 36px; place-items: center; border-radius: 11px;
            color: #fff; background: var(--coral); font-size: 15px; line-height: 1;
        }
        .brand-name { max-width: 235px; line-height: 1.25; }
        .main-nav { display: flex; align-items: center; gap: 5px; margin: 0; list-style: none; }
        .main-nav a { display: block; padding: 10px 14px; border-radius: 8px; color: var(--ink-soft); font-size: 14px; font-weight: 650; transition: color .18s, background .18s; }
        .main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--coral-dark); background: var(--coral-pale); }
        .nav-tools { display: flex; align-items: center; gap: 10px; }
        .search-form { display: flex; align-items: center; width: 210px; height: 40px; padding: 0 11px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
        .search-form input { width: 100%; min-width: 0; border: 0; box-shadow: none; background: transparent; color: var(--ink); font-size: 13px; margin: 0; padding: 0; }
        .search-form input:focus { border: 0; box-shadow: none; }
        .search-form button { display: grid; flex: 0 0 24px; place-items: center; border: 0; background: transparent; color: var(--green); cursor: pointer; }
        .button {
            display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px;
            padding: 10px 18px; border: 1px solid transparent; border-radius: 8px;
            font-size: 14px; font-weight: 750; line-height: 1.25; transition: transform .18s, background .18s, box-shadow .18s, border-color .18s;
        }
        .button:hover { transform: translateY(-2px); }
        .button-primary { color: #fff; background: var(--coral); box-shadow: 0 6px 16px rgba(228, 94, 72, .2); }
        .button-primary:hover { color: #fff; background: var(--coral-dark); box-shadow: 0 9px 20px rgba(201, 74, 56, .22); }
        .button-secondary { color: var(--ink); background: #fff; border-color: var(--line); }
        .button-secondary:hover { color: var(--green); border-color: var(--green); background: var(--green-pale); }
        .menu-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); font-size: 20px; cursor: pointer; }
        .hero {
            position: relative; display: flex; min-height: 520px; align-items: center; overflow: hidden;
            color: #fff; background: #202923;
        }
        .hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 48%; }
        .hero::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(17, 27, 21, .86) 0%, rgba(17, 27, 21, .63) 46%, rgba(17, 27, 21, .15) 100%); }
        .hero-content { position: relative; z-index: 1; width: min(var(--container), calc(100% - 48px)); margin: 0 auto; padding: 64px 0 58px; }
        .eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; color: #ffd2bd; font-size: 13px; font-weight: 750; }
        .eyebrow::before { width: 7px; height: 7px; border-radius: 50%; background: var(--coral); content: ""; }
        h1 { max-width: 760px; margin: 0 0 18px; color: #fff; font-size: 48px; font-weight: 850; line-height: 1.2; }
        .hero-copy { max-width: 700px; margin: 0; color: rgba(255,255,255,.86); font-size: 16px; line-height: 1.9; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
        .hero .button-secondary { color: #fff; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.45); }
        .hero .button-secondary:hover { background: rgba(255,255,255,.2); }
        .hero-note { display: flex; flex-wrap: wrap; gap: 9px 20px; margin-top: 25px; color: rgba(255,255,255,.78); font-size: 13px; }
        .hero-note span { display: inline-flex; align-items: center; gap: 7px; }
        .hero-note b { color: #ffd2bd; font-size: 15px; }
        .section { padding: 74px 0; }
        .section-white { background: var(--white); }
        .section-green { background: #eaf0e9; }
        .section-dark { background: #202923; color: #fff; }
        .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
        .section-heading h2 { max-width: 760px; margin: 0; font-size: 30px; font-weight: 820; line-height: 1.35; }
        .section-heading p { max-width: 580px; margin: 10px 0 0; color: var(--muted); line-height: 1.85; }
        .section-dark .section-heading p { color: rgba(255,255,255,.68); }
        .section-kicker { display: block; margin-bottom: 8px; color: var(--coral-dark); font-size: 12px; font-weight: 800; }
        .section-dark .section-kicker { color: #ffb19f; }
        .text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--coral-dark); font-size: 14px; font-weight: 750; white-space: nowrap; }
        .text-link:hover { color: var(--green); }
        .problem-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
        .problem-item { padding: 24px 22px; border-right: 1px solid var(--line); }
        .problem-item:last-child { border-right: 0; }
        .problem-item strong { display: block; margin-bottom: 6px; font-size: 16px; }
        .problem-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
        .solution-layout { display: grid; grid-template-columns: 1.04fr .96fr; gap: 48px; align-items: center; }
        .solution-visual { position: relative; min-height: 330px; overflow: hidden; border-radius: var(--radius); background: #d7e0d5; }
        .solution-visual img { width: 100%; height: 100%; min-height: 330px; object-fit: cover; }
        .play-stamp { position: absolute; right: 20px; bottom: 20px; display: flex; align-items: center; gap: 10px; padding: 12px 16px; color: #fff; background: rgba(32,41,35,.88); border-radius: 9px; font-size: 13px; }
        .play-stamp b { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; background: var(--coral); }
        .solution-copy h3 { margin: 0 0 12px; font-size: 24px; line-height: 1.45; }
        .solution-copy > p { margin: 0 0 22px; color: var(--muted); }
        .feature-list { margin: 0; list-style: none; }
        .feature-list li { display: flex; gap: 13px; padding: 13px 0; border-top: 1px solid var(--line); }
        .feature-list li:last-child { border-bottom: 1px solid var(--line); }
        .feature-icon { display: grid; flex: 0 0 32px; width: 32px; height: 32px; place-items: center; border-radius: 8px; color: var(--green); background: var(--green-pale); font-weight: 800; }
        .feature-list strong { display: block; margin-bottom: 2px; font-size: 14px; }
        .feature-list span:last-child { color: var(--muted); font-size: 13px; }
        .steps { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; gap: 0; }
        .steps::before { position: absolute; top: 24px; right: 9%; left: 9%; height: 1px; background: #d8ddd5; content: ""; }
        .step { position: relative; padding: 0 22px; text-align: center; }
        .step-number { position: relative; z-index: 1; display: grid; width: 50px; height: 50px; margin: 0 auto 16px; place-items: center; border: 5px solid var(--paper); border-radius: 50%; color: #fff; background: var(--green); font-size: 14px; font-weight: 800; }
        .step h3 { margin: 0 0 7px; font-size: 16px; }
        .step p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
        .data-ribbon { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius); }
        .data-point { padding: 25px 20px; border-right: 1px solid rgba(255,255,255,.16); }
        .data-point:last-child { border-right: 0; }
        .data-point strong { display: block; color: #ffd2bd; font-size: 27px; line-height: 1.3; }
        .data-point span { display: block; margin-top: 7px; color: rgba(255,255,255,.76); font-size: 13px; }
        .data-caption { margin: 14px 0 0; color: rgba(255,255,255,.55); font-size: 12px; }
        .episode-track { display: grid; grid-auto-columns: minmax(248px, 1fr); grid-auto-flow: column; gap: 18px; overflow-x: auto; padding: 2px 2px 16px; scroll-snap-type: x mandatory; }
        .episode-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; scroll-snap-align: start; transition: transform .2s, box-shadow .2s; }
        .episode-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        .episode-cover { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #dce1dc; }
        .episode-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
        .episode-card:hover .episode-cover img { transform: scale(1.04); }
        .badge { display: inline-flex; align-items: center; min-height: 25px; padding: 3px 9px; border-radius: 5px; color: var(--green); background: var(--green-pale); font-size: 11px; font-weight: 750; }
        .episode-cover .badge { position: absolute; top: 12px; left: 12px; }
        .episode-info { padding: 16px; }
        .episode-info h3 { overflow: hidden; margin: 0 0 5px; font-size: 17px; text-overflow: ellipsis; white-space: nowrap; }
        .episode-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 12px; }
        .progress-track { height: 4px; margin: 14px 0 13px; overflow: hidden; border-radius: 4px; background: #eaede8; }
        .progress-track span { display: block; height: 100%; border-radius: inherit; background: var(--coral); }
        .episode-bottom { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 12px; }
        .episode-bottom a { color: var(--coral-dark); font-weight: 750; }
        .editorial-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
        .editorial-feature { position: relative; min-height: 440px; overflow: hidden; border-radius: var(--radius); background: #26332b; }
        .editorial-feature img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
        .editorial-feature::after { position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(20,28,22,.88)); content: ""; }
        .editorial-feature-copy { position: absolute; z-index: 1; right: 26px; bottom: 24px; left: 26px; color: #fff; }
        .editorial-feature-copy .badge { margin-bottom: 10px; }
        .editorial-feature-copy h3 { margin: 0 0 7px; font-size: 24px; line-height: 1.4; }
        .editorial-feature-copy p { max-width: 520px; margin: 0; color: rgba(255,255,255,.78); font-size: 13px; }
        .mini-list { display: grid; gap: 14px; }
        .mini-episode { display: grid; grid-template-columns: 108px 1fr; gap: 15px; align-items: center; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
        .mini-episode img { width: 108px; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 7px; }
        .mini-episode h3 { margin: 0 0 4px; font-size: 15px; line-height: 1.5; }
        .mini-episode p { margin: 0; color: var(--muted); font-size: 12px; }
        .feedback-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 56px; align-items: center; }
        .feedback-intro h2 { margin: 0 0 12px; font-size: 30px; line-height: 1.4; }
        .feedback-intro p { margin: 0; color: var(--muted); }
        .quote-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .quote { min-height: 145px; padding: 20px; border-left: 3px solid var(--coral); background: #fff; }
        .quote p { margin: 0 0 13px; color: var(--ink-soft); font-size: 14px; }
        .quote span { color: var(--muted); font-size: 12px; }
        .scene-grid { display: grid; grid-template-columns: 1.15fr .85fr 1fr; gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
        .scene { padding: 23px 22px; border-right: 1px solid var(--line); }
        .scene:last-child { border: 0; }
        .scene-label { display: inline-flex; margin-bottom: 12px; padding: 4px 9px; border-radius: 5px; color: var(--coral-dark); background: var(--coral-pale); font-size: 11px; font-weight: 750; }
        .scene h3 { margin: 0 0 6px; font-size: 16px; }
        .scene p { margin: 0; color: var(--muted); font-size: 13px; }
        .article-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; border-top: 1px solid var(--line); }
        .article-item { padding: 20px 0; border-bottom: 1px solid var(--line); }
        .article-date { color: var(--coral-dark); font-size: 11px; font-weight: 800; }
        .article-item h3 { margin: 6px 0; font-size: 16px; line-height: 1.55; }
        .article-item p { margin: 0; color: var(--muted); font-size: 13px; }
        .metric-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
        .metric-row { padding: 17px 0; border-bottom: 1px solid rgba(255,255,255,.17); }
        .metric-label { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 9px; color: rgba(255,255,255,.8); font-size: 13px; }
        .metric-label strong { color: #fff; font-size: 13px; }
        .metric-bar { height: 6px; overflow: hidden; border-radius: 6px; background: rgba(255,255,255,.14); }
        .metric-bar span { display: block; height: 100%; border-radius: inherit; background: var(--gold); }
        .faq-list { border-top: 1px solid var(--line); }
        .faq-list details { border-bottom: 1px solid var(--line); }
        .faq-list summary { position: relative; padding: 18px 42px 18px 0; cursor: pointer; list-style: none; font-size: 15px; font-weight: 750; }
        .faq-list summary::-webkit-details-marker { display: none; }
        .faq-list summary::after { position: absolute; top: 15px; right: 4px; color: var(--coral-dark); content: "+"; font-size: 23px; font-weight: 400; }
        .faq-list details[open] summary::after { content: "−"; }
        .faq-list details p { max-width: 850px; margin: -3px 40px 18px 0; color: var(--muted); font-size: 14px; }
        .topic-index { display: grid; grid-template-columns: 1.25fr 1fr 1fr 1fr; gap: 12px; }
        .topic-link { display: flex; min-height: 92px; align-items: end; justify-content: space-between; padding: 17px; border-radius: 9px; color: #fff; background: var(--green); transition: background .2s, transform .2s; }
        .topic-link:nth-child(2) { background: #a94c3b; }
        .topic-link:nth-child(3) { color: var(--ink); background: #e8d6b1; }
        .topic-link:nth-child(4) { background: #536c5a; }
        .topic-link:hover { color: #fff; background: var(--coral-dark); transform: translateY(-3px); }
        .topic-link strong { font-size: 15px; }
        .topic-link span { font-size: 19px; }
        .final-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 34px 38px; border-radius: var(--radius); color: #fff; background: var(--green); }
        .final-band h2 { margin: 0 0 6px; font-size: 25px; line-height: 1.4; }
        .final-band p { max-width: 670px; margin: 0; color: rgba(255,255,255,.75); font-size: 14px; }
        .final-actions { display: flex; flex: 0 0 auto; flex-wrap: wrap; gap: 10px; }
        .final-band .button-secondary { border-color: rgba(255,255,255,.38); }
        .site-footer { padding: 48px 0 22px; color: #fff; background: #202923; }
        .footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 42px; padding-bottom: 32px; }
        .footer-brand { margin-bottom: 12px; color: #fff; }
        .footer-about { max-width: 410px; margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }
        .footer-column h2 { margin: 0 0 12px; color: #fff; font-size: 14px; }
        .footer-links { display: grid; gap: 7px; margin: 0; list-style: none; }
        .footer-links a { color: rgba(255,255,255,.66); font-size: 13px; }
        .footer-links a:hover { color: #ffb19f; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.5); font-size: 12px; }
        .footer-bottom a { color: rgba(255,255,255,.68); }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
        @media (min-width: 1200px) {
            .hero { min-height: 555px; }
        }
        @media (max-width: 1100px) {
            .container { width: min(var(--container), calc(100% - 40px)); }
            .main-nav a { padding-inline: 9px; font-size: 13px; }
            .search-form { width: 175px; }
            .brand-name { max-width: 190px; font-size: 16px; }
            .solution-layout { gap: 32px; }
        }
        @media (max-width: 900px) {
            .topbar { min-height: 68px; }
            .menu-toggle { display: inline-flex; }
            .nav-tools { margin-left: auto; }
            .search-form { width: min(230px, 30vw); }
            .main-nav {
                position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none;
                padding: 10px 20px 18px; border-bottom: 1px solid var(--line); background: var(--paper);
                box-shadow: 0 12px 20px rgba(31,42,34,.08);
            }
            .main-nav.is-open { display: grid; }
            .main-nav a { padding: 12px 14px; font-size: 15px; }
            .problem-strip { grid-template-columns: 1fr 1fr; }
            .problem-item:nth-child(2) { border-right: 0; }
            .problem-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
            .feedback-layout { grid-template-columns: 1fr; gap: 28px; }
            .topic-index { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 767px) {
            .container { width: min(var(--container), calc(100% - 32px)); }
            .hero { min-height: 510px; }
            .hero-content { width: calc(100% - 36px); padding: 56px 0 44px; }
            h1 { max-width: 620px; font-size: 38px; }
            .hero-copy { font-size: 15px; }
            .section { padding: 58px 0; }
            .section-heading { display: block; margin-bottom: 23px; }
            .section-heading h2, .feedback-intro h2 { font-size: 26px; }
            .section-heading > .text-link { margin-top: 14px; }
            .solution-layout { grid-template-columns: 1fr; gap: 24px; }
            .solution-visual, .solution-visual img { min-height: 260px; }
            .steps { grid-template-columns: 1fr 1fr; row-gap: 27px; }
            .steps::before { display: none; }
            .step { padding-inline: 10px; }
            .data-ribbon { grid-template-columns: 1fr 1fr; }
            .data-point:nth-child(2) { border-right: 0; }
            .data-point:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.16); }
            .editorial-grid { grid-template-columns: 1fr; }
            .editorial-feature { min-height: 350px; }
            .scene-grid { grid-template-columns: 1fr; }
            .scene { border-right: 0; border-bottom: 1px solid var(--line); }
            .scene:last-child { border-bottom: 0; }
            .article-list { grid-template-columns: 1fr; }
            .metric-list { grid-template-columns: 1fr; }
            .final-band { align-items: flex-start; flex-direction: column; padding: 28px 24px; }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-top > :first-child { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .topbar { gap: 10px; }
            .brand { gap: 8px; }
            .brand-mark { width: 33px; height: 33px; }
            .brand-name { max-width: 145px; font-size: 14px; }
            .nav-tools { gap: 7px; }
            .search-form { width: 40px; height: 40px; justify-content: center; padding: 0; }
            .search-form input { position: absolute; width: 1px; height: 1px; opacity: 0; }
            .search-form button { flex-basis: 38px; width: 38px; height: 38px; }
            .nav-cta { display: none; }
            .hero { min-height: 525px; }
            .hero::after { background: linear-gradient(90deg, rgba(17,27,21,.84), rgba(17,27,21,.43)); }
            h1 { font-size: 33px; }
            .hero-copy { font-size: 14px; }
            .hero-actions .button { flex: 1 1 100%; }
            .hero-note { gap: 8px 13px; }
            .section { padding: 48px 0; }
            .section-heading h2, .feedback-intro h2 { font-size: 23px; }
            .problem-item { padding: 18px 13px; }
            .problem-item strong { font-size: 14px; }
            .problem-item p { font-size: 12px; }
            .steps { column-gap: 8px; }
            .step h3 { font-size: 14px; }
            .step p { font-size: 12px; }
            .data-point { padding: 19px 14px; }
            .data-point strong { font-size: 23px; }
            .episode-track { grid-auto-columns: minmax(235px, 82vw); margin-right: -16px; padding-right: 16px; }
            .editorial-feature { min-height: 310px; }
            .editorial-feature-copy { right: 18px; left: 18px; }
            .editorial-feature-copy h3 { font-size: 20px; }
            .mini-episode { grid-template-columns: 88px 1fr; gap: 12px; }
            .mini-episode img { width: 88px; }
            .quote-list { grid-template-columns: 1fr; }
            .topic-index { grid-template-columns: 1fr 1fr; gap: 8px; }
            .topic-link { min-height: 80px; padding: 13px; }
            .topic-link strong { font-size: 13px; }
            .final-band h2 { font-size: 21px; }
            .final-actions { width: 100%; }
            .final-actions .button { flex: 1 1 auto; }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 22px 16px; }
            .footer-bottom { flex-direction: column; }
        }
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
        }

/* roulang page: category1 */
:root {
 --ink:#202923;--ink-soft:#455149;--muted:#747d75;--paper:#f7f6f1;--white:#fff;--line:#e2e4dd;
 --coral:#e45e48;--coral-dark:#c94a38;--coral-pale:#fce9e3;--green:#315f4c;--green-pale:#e9f0e9;
 --gold:#d8a64f;--radius:12px;--radius-small:8px;--shadow:0 12px 32px rgba(31,42,34,.08);--container:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:15px;line-height:1.78;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button,a,input,select{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid rgba(228,94,72,.45);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;z-index:50;top:0;background:rgba(247,246,241,.97);border-bottom:1px solid rgba(226,228,221,.9);backdrop-filter:blur(12px)}
.topbar{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--ink);font-size:18px;font-weight:800}
.brand-mark{display:grid;width:36px;height:36px;place-items:center;border-radius:11px;color:#fff;background:var(--coral);font-size:15px;line-height:1}
.brand-name{max-width:235px;line-height:1.25}
.main-nav{display:flex;align-items:center;gap:5px;margin:0;list-style:none}
.main-nav a{display:block;padding:10px 14px;border-radius:8px;color:var(--ink-soft);font-size:14px;font-weight:650;transition:color .18s,background .18s}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--coral-dark);background:var(--coral-pale)}
.nav-tools{display:flex;align-items:center;gap:10px}
.search-form{display:flex;align-items:center;width:210px;height:40px;padding:0 11px;background:#fff;border:1px solid var(--line);border-radius:8px}
.search-form input{width:100%;min-width:0;height:auto;margin:0;padding:0;border:0;box-shadow:none;background:transparent;color:var(--ink);font-size:13px}
.search-form input:focus{border:0;box-shadow:none}
.search-form button{display:grid;flex:0 0 28px;place-items:center;border:0;background:transparent;color:var(--green);cursor:pointer}
.button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid transparent;border-radius:8px;font-size:14px;font-weight:750;line-height:1.25;transition:transform .18s,background .18s,box-shadow .18s,border-color .18s}
.button:hover{transform:translateY(-2px)}
.button-primary{color:#fff;background:var(--coral);box-shadow:0 6px 16px rgba(228,94,72,.2)}
.button-primary:hover{color:#fff;background:var(--coral-dark);box-shadow:0 9px 20px rgba(201,74,56,.22)}
.button-secondary{color:var(--ink);background:#fff;border-color:var(--line)}
.button-secondary:hover{color:var(--green);border-color:var(--green);background:var(--green-pale)}
.menu-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:20px;cursor:pointer}
.category-head{padding:39px 0 30px;background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;gap:9px;align-items:center;margin:0 0 14px;color:var(--muted);font-size:13px}
.breadcrumb a:hover{color:var(--coral-dark)}
.breadcrumb span[aria-hidden]{color:#aab0a9}
.head-row{display:flex;align-items:end;justify-content:space-between;gap:28px}
.head-copy{max-width:790px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:8px;color:var(--coral-dark);font-size:12px;font-weight:800}
.eyebrow::before{width:7px;height:7px;border-radius:50%;background:var(--coral);content:""}
h1{margin:0;font-size:34px;font-weight:850;line-height:1.32}
.head-copy p{max-width:760px;margin:12px 0 0;color:var(--muted);font-size:15px;line-height:1.85}
.head-meta{display:flex;flex:0 0 auto;gap:9px;align-items:center;padding-bottom:2px}
.head-count{color:var(--muted);font-size:13px;white-space:nowrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:var(--coral-pale);color:var(--coral-dark);font-size:12px;font-weight:750;line-height:1.3}
.badge-green{background:var(--green-pale);color:var(--green)}
.badge-gold{background:#f5edda;color:#80601e}
.section{padding:48px 0}
.section-white{background:var(--white)}
.section-green{background:#eaf0e9}
.section-dark{background:#202923;color:#fff}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:23px}
.section-heading h2{max-width:760px;margin:0;font-size:25px;font-weight:820;line-height:1.4}
.section-heading p{max-width:580px;margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.8}
.section-dark .section-heading p{color:rgba(255,255,255,.68)}
.section-kicker{display:block;margin-bottom:6px;color:var(--coral-dark);font-size:12px;font-weight:800}
.section-dark .section-kicker{color:#ffb19f}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--coral-dark);font-size:14px;font-weight:750;white-space:nowrap}
.text-link:hover{color:var(--green);text-decoration:underline;text-underline-offset:4px}
.filter-panel{display:grid;grid-template-columns:1.1fr 1.1fr 1.1fr 1fr auto;gap:12px;align-items:end}
.filter-field label{display:block;margin:0 0 6px;color:var(--ink-soft);font-size:12px;font-weight:750}
.filter-field select,.filter-field input{height:44px;margin:0;padding:0 36px 0 12px;border:1px solid var(--line);border-radius:8px;background-color:#fff;color:var(--ink);font-size:14px;box-shadow:none}
.filter-field input{padding-right:12px}
.filter-field select:focus,.filter-field input:focus{border-color:var(--coral);box-shadow:0 0 0 3px rgba(228,94,72,.12)}
.filter-actions{display:flex;gap:8px}
.clear-filter{display:inline-flex;min-height:44px;align-items:center;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink-soft);font-size:13px;font-weight:700;cursor:pointer}
.clear-filter:hover{border-color:var(--green);color:var(--green);background:var(--green-pale)}
.filter-result{display:flex;justify-content:space-between;gap:12px;margin-top:17px;padding-top:13px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.video-card{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s,border-color .2s}
.video-card:hover{transform:translateY(-3px);border-color:#d5d9d1;box-shadow:var(--shadow)}
.video-cover{position:relative;overflow:hidden;aspect-ratio:16/9;background:#d5d9d1}
.video-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.video-card:hover .video-cover img{transform:scale(1.035)}
.cover-label{position:absolute;left:12px;top:12px}
.cover-count{position:absolute;right:12px;bottom:12px;padding:4px 9px;border-radius:6px;background:rgba(27,35,29,.78);color:#fff;font-size:12px;font-weight:700}
.play-mark{position:absolute;left:50%;top:50%;display:grid;width:46px;height:46px;place-items:center;transform:translate(-50%,-50%);border:1px solid rgba(255,255,255,.75);border-radius:50%;background:rgba(32,41,35,.42);color:#fff;font-size:17px;opacity:0;transition:opacity .2s,background .2s}
.video-card:hover .play-mark,.video-card:focus-within .play-mark{opacity:1;background:rgba(228,94,72,.9)}
.video-body{padding:15px 16px 16px}
.video-title-row{display:flex;align-items:start;justify-content:space-between;gap:10px}
.video-title{margin:0;color:var(--ink);font-size:18px;font-weight:800;line-height:1.4}
.video-genre{margin:5px 0 12px;color:var(--muted);font-size:13px}
.video-meta{display:flex;flex-wrap:wrap;gap:7px 13px;color:var(--ink-soft);font-size:12px}
.video-meta span{display:inline-flex;align-items:center;gap:5px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#a0a79f}
.progress-row{display:flex;align-items:center;gap:9px;margin-top:13px;color:var(--muted);font-size:11px}
.progress-track{height:5px;flex:1;overflow:hidden;border-radius:999px;background:#edf0eb}
.progress-fill{height:100%;border-radius:inherit;background:var(--coral)}
.progress-fill.green{background:var(--green)}
.progress-fill.gold{background:var(--gold)}
.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;padding-top:12px;border-top:1px solid #eef0eb}
.card-bottom .text-link{font-size:13px}
.list-footer{display:flex;justify-content:center;margin-top:28px}
.empty-state{display:none;padding:35px 20px;border:1px dashed #cbd1c9;border-radius:var(--radius);background:#fff;text-align:center;color:var(--muted)}
.empty-state strong{display:block;margin-bottom:5px;color:var(--ink);font-size:16px}
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
.timeline-item{position:relative;padding:0 20px 0 0}
.timeline-item:not(:last-child)::after{position:absolute;top:13px;left:35px;right:10px;height:1px;background:#cdd8cd;content:""}
.timeline-top{position:relative;z-index:1;display:flex;align-items:center;gap:10px;margin-bottom:12px}
.timeline-dot{display:grid;width:28px;height:28px;place-items:center;border:1px solid #b6c9b8;border-radius:50%;background:#fff;color:var(--green);font-size:11px;font-weight:800}
.timeline-item.is-current .timeline-dot{border-color:var(--coral);background:var(--coral);color:#fff}
.timeline-date{color:var(--muted);font-size:12px}
.timeline-item h3{margin:0 0 4px;font-size:15px;font-weight:800}
.timeline-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.info-columns{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start}
.news-list{display:grid;gap:0;margin:0;padding:0;list-style:none}
.news-list li{border-top:1px solid var(--line)}
.news-list li:last-child{border-bottom:1px solid var(--line)}
.news-list a{display:grid;grid-template-columns:82px 1fr auto;align-items:center;gap:14px;padding:13px 0}
.news-date{color:var(--muted);font-size:12px}
.news-title{font-size:14px;font-weight:720;line-height:1.55}
.news-list a:hover .news-title{color:var(--coral-dark)}
.news-arrow{color:var(--coral);font-size:17px}
.ranking{display:grid;gap:0;margin:0;padding:0;list-style:none}
.ranking li{display:grid;grid-template-columns:28px 56px minmax(0,1fr) auto;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.13)}
.rank-number{color:#ffb19f;font-size:15px;font-weight:850}
.rank-thumb{width:56px;aspect-ratio:16/10;overflow:hidden;border-radius:6px;background:#3d4840}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-title{font-size:13px;font-weight:750;line-height:1.45}
.rank-meta{color:rgba(255,255,255,.6);font-size:11px}
.rank-state{color:#ffd2bd;font-size:11px;white-space:nowrap}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
.faq-item{border:1px solid var(--line);border-radius:8px;background:#fff}
.faq-item summary{position:relative;padding:14px 42px 14px 16px;color:var(--ink);font-size:14px;font-weight:750;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{position:absolute;right:16px;top:50%;content:"＋";transform:translateY(-50%);color:var(--coral-dark);font-size:18px;font-weight:500}
.faq-item[open] summary::after{content:"−"}
.faq-answer{padding:0 16px 15px;color:var(--muted);font-size:13px;line-height:1.8}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:25px 28px;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);background:#29362e}
.cta-band h2{margin:0;color:#fff;font-size:22px;font-weight:820;line-height:1.4}
.cta-band p{margin:5px 0 0;color:rgba(255,255,255,.68);font-size:14px}
.cta-actions{display:flex;flex:0 0 auto;gap:10px}
.site-footer{padding:47px 0 20px;background:#202923;color:#fff}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;padding-bottom:32px}
.footer-brand{color:#fff}
.footer-about{max-width:420px;margin:14px 0 0;color:rgba(255,255,255,.66);font-size:13px;line-height:1.8}
.footer-column h2{margin:3px 0 12px;color:#fff;font-size:14px;font-weight:800}
.footer-links{display:grid;gap:7px;margin:0;padding:0;list-style:none}
.footer-links a{color:rgba(255,255,255,.67);font-size:13px;transition:color .18s}
.footer-links a:hover{color:#ffd2bd}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:17px;border-top:1px solid rgba(255,255,255,.13);color:rgba(255,255,255,.52);font-size:12px}
.footer-bottom a{color:rgba(255,255,255,.78)}
.footer-bottom a:hover{color:#ffd2bd}
@media(max-width:1200px){.search-form{width:174px}.main-nav a{padding-inline:10px}.filter-panel{grid-template-columns:repeat(4,minmax(0,1fr))}.filter-actions{grid-column:1/-1}}
@media(max-width:992px){.topbar{gap:14px}.main-nav{gap:1px}.main-nav a{padding:9px 8px;font-size:13px}.brand{font-size:16px}.brand-name{max-width:190px}.search-form{width:150px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.info-columns{gap:26px}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 36px))}.topbar{min-height:68px;flex-wrap:wrap}.brand-name{max-width:230px}.menu-toggle{display:inline-flex}.nav-tools{margin-left:auto}.nav-tools .button{display:none}.search-form{display:none}.main-nav{display:none;flex:0 0 100%;align-items:stretch;padding:0 0 12px}.main-nav.is-open{display:flex;flex-direction:column}.main-nav a{padding:11px 13px;font-size:14px}.category-head{padding:28px 0 25px}.head-row{align-items:start;flex-direction:column;gap:15px}h1{font-size:29px}.head-meta{padding:0}.section{padding:39px 0}.section-heading{align-items:start;flex-direction:column;gap:10px;margin-bottom:18px}.section-heading h2{font-size:22px}.filter-panel{grid-template-columns:repeat(2,minmax(0,1fr))}.filter-actions{grid-column:1/-1}.timeline{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:25px}.timeline-item:nth-child(2)::after{display:none}.info-columns{grid-template-columns:1fr;gap:32px}.faq-list{grid-template-columns:1fr}.cta-band{align-items:flex-start;flex-direction:column}.footer-top{grid-template-columns:1fr 1fr;gap:28px}.footer-top>div:first-child{grid-column:1/-1}}
@media(max-width:640px){.container{width:calc(100% - 30px)}.brand{gap:8px;font-size:14px}.brand-mark{width:33px;height:33px}.brand-name{max-width:185px}.nav-tools{gap:7px}.section{padding:34px 0}.head-copy p{font-size:14px}.filter-panel{grid-template-columns:1fr 1fr;gap:10px}.filter-field select,.filter-field input{font-size:13px}.video-grid{grid-template-columns:1fr;gap:14px}.video-card{display:grid;grid-template-columns:38% 1fr;align-items:stretch}.video-cover{height:100%;min-height:178px;aspect-ratio:auto}.video-body{padding:12px}.video-title{font-size:16px}.video-genre{margin:4px 0 8px;font-size:12px}.video-meta{gap:5px 9px;font-size:11px}.progress-row{margin-top:9px}.card-bottom{margin-top:9px;padding-top:8px}.card-bottom .badge{font-size:10px;padding:4px 7px}.timeline{grid-template-columns:1fr 1fr}.timeline-item{padding-right:8px}.timeline-item:not(:last-child)::after{right:5px}.timeline-item:nth-child(2)::after{display:none}.timeline-item h3{font-size:14px}.news-list a{grid-template-columns:68px 1fr auto;gap:9px}.news-title{font-size:13px}.ranking li{grid-template-columns:22px 50px minmax(0,1fr) auto;gap:9px}.rank-thumb{width:50px}.cta-band{padding:20px}.cta-band h2{font-size:19px}.cta-actions{width:100%;flex-wrap:wrap}.footer-top{gap:23px}.footer-column h2{font-size:13px}.footer-links a{font-size:12px}.footer-bottom{flex-direction:column;gap:8px}}
@media(max-width:420px){.brand-name{max-width:150px}.filter-panel{grid-template-columns:1fr}.filter-actions{grid-column:auto}.video-card{grid-template-columns:35% 1fr}.video-cover{min-height:182px}.video-meta span:last-child{display:none}.timeline{grid-template-columns:1fr}.timeline-item::after{display:none!important}.head-meta{flex-wrap:wrap}}