/* roulang page: index */
:root {
            --ink: #111827;
            --ink-soft: #374151;
            --muted: #6b7280;
            --paper: #f7f7f3;
            --surface: #ffffff;
            --line: #e5e7eb;
            --orange: #ed6a3a;
            --orange-dark: #c94c20;
            --teal: #147d78;
            --yellow: #f4c95d;
            --night: #111827;
            --night-2: #1d2939;
            --radius-lg: 28px;
            --radius-md: 16px;
            --shadow-sm: 0 8px 24px rgba(17, 24, 39, .07);
            --shadow-lg: 0 22px 60px rgba(17, 24, 39, .13);
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink);
            background: var(--paper);
            font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 3px solid rgba(237, 106, 58, .35);
            outline-offset: 3px;
        }
        .container { max-width: 1180px; }
        .eyebrow {
            color: var(--orange);
            font-size: .76rem;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }
        .section-space { padding: 96px 0; }
        .section-heading { max-width: 680px; margin-bottom: 42px; }
        .section-heading h2 {
            margin: 10px 0 14px;
            font-size: clamp(2rem, 4vw, 3.35rem);
            line-height: 1.14;
            letter-spacing: -.04em;
            font-weight: 850;
        }
        .section-heading p { color: var(--muted); max-width: 620px; margin: 0; }
        .btn {
            border-radius: 999px;
            padding: .78rem 1.35rem;
            font-weight: 750;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
        }
        .btn:hover { transform: translateY(-2px); }
        .btn-primary {
            background: var(--orange);
            border-color: var(--orange);
            color: #fff;
            box-shadow: 0 10px 20px rgba(237, 106, 58, .22);
        }
        .btn-primary:hover, .btn-primary:active {
            background: var(--orange-dark);
            border-color: var(--orange-dark);
            color: #fff;
        }
        .btn-dark { background: var(--ink); border-color: var(--ink); color: #fff; }
        .btn-dark:hover { background: #273449; border-color: #273449; color: #fff; }
        .btn-lightline { border: 1px solid rgba(255,255,255,.35); color: #fff; }
        .btn-lightline:hover { background: #fff; color: var(--ink); }

        .site-header {
            background: rgba(247,247,243,.94);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 20;
            backdrop-filter: blur(14px);
        }
        .masthead {
            min-height: 86px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }
        .brand {
            display: inline-flex;
            align-items: baseline;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 900;
            letter-spacing: -.04em;
            white-space: nowrap;
        }
        .brand-mark { color: var(--orange); font-size: 1.8rem; line-height: 1; }
        .brand small {
            color: var(--muted);
            font-size: .72rem;
            font-weight: 600;
            letter-spacing: .05em;
            border-left: 1px solid var(--line);
            padding-left: 12px;
        }
        .main-nav { display: flex; align-items: center; gap: 27px; }
        .main-nav a {
            color: var(--ink-soft);
            font-size: .92rem;
            font-weight: 700;
            position: relative;
            padding: 28px 0;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 100%;
            bottom: 20px;
            height: 2px;
            background: var(--orange);
            transition: right .2s ease;
        }
        .main-nav a:hover, .main-nav a.active { color: var(--orange-dark); }
        .main-nav a:hover::after, .main-nav a.active::after { right: 0; }
        .nav-tools { display: flex; align-items: center; gap: 10px; }
        .search-pill {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 8px 13px;
            color: var(--muted);
        }
        .search-pill input {
            width: 100px;
            border: 0;
            outline: 0;
            background: transparent;
            font-size: .82rem;
        }
        .menu-toggle { display: none; border: 0; background: transparent; font-size: 1.5rem; }

        .hero {
            position: relative;
            overflow: hidden;
            background: var(--night);
            color: #fff;
            padding: 86px 0 74px;
        }
        .hero::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            right: -180px;
            top: -220px;
            border-radius: 50%;
            background: rgba(237,106,58,.22);
            filter: blur(3px);
        }
        .hero::after {
            content: "";
            position: absolute;
            left: 42%;
            bottom: -290px;
            width: 560px;
            height: 560px;
            border-radius: 50%;
            border: 1px solid rgba(244,201,93,.22);
        }
        .hero-content { position: relative; z-index: 1; }
        .hero h1 {
            max-width: 770px;
            margin: 15px 0 20px;
            font-size: clamp(2.7rem, 6vw, 5.6rem);
            line-height: 1.03;
            letter-spacing: -.065em;
            font-weight: 900;
        }
        .hero-lead { max-width: 690px; color: #d3dae5; font-size: 1.08rem; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 42px; }
        .hero-foot {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            color: #b5bfce;
            font-size: .88rem;
        }
        .hero-foot strong { color: #fff; display: block; font-size: 1.25rem; }
        .launch-panel {
            min-height: 315px;
            margin-top: 12px;
            padding: 28px;
            border: 1px solid rgba(255,255,255,.15);
            border-radius: var(--radius-lg);
            background: rgba(255,255,255,.07);
            box-shadow: var(--shadow-lg);
        }
        .launch-top { display: flex; justify-content: space-between; align-items: start; gap: 18px; }
        .launch-top h3 { margin: 0; font-size: 1.35rem; }
        .launch-top p { color: #b5bfce; font-size: .84rem; margin: 5px 0 0; }
        .countdown {
            width: 102px;
            height: 102px;
            flex: 0 0 auto;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: conic-gradient(var(--yellow) 0 74%, rgba(255,255,255,.12) 74% 100%);
            position: relative;
        }
        .countdown::before { content: ""; position: absolute; inset: 7px; border-radius: 50%; background: var(--night-2); }
        .countdown span { position: relative; z-index: 1; text-align: center; font-weight: 900; line-height: 1.1; }
        .countdown small { display: block; color: #bdc6d3; font-size: .64rem; font-weight: 500; }
        .topic-list { margin-top: 26px; display: grid; gap: 14px; }
        .topic-line {
            display: flex; align-items: center; gap: 12px;
            padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12);
            color: #e8ecf2; font-size: .9rem;
        }
        .topic-line i { color: var(--yellow); }
        .topic-line em { margin-left: auto; color: #aab5c4; font-size: .76rem; font-style: normal; }

        .soft-section { background: #fff; }
        .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; }
        .manifesto {
            padding: 34px;
            border-left: 5px solid var(--orange);
            background: #fff8f4;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .manifesto p { margin: 0; font-size: 1.22rem; line-height: 1.65; font-weight: 750; }
        .mini-points { display: grid; gap: 17px; }
        .mini-point { display: flex; gap: 15px; align-items: start; }
        .mini-point b { display: block; margin-bottom: 2px; }
        .mini-point p { margin: 0; color: var(--muted); font-size: .9rem; }
        .round-icon {
            width: 42px; height: 42px; flex: 0 0 42px;
            display: grid; place-items: center; border-radius: 13px;
            color: var(--teal); background: #e3f3f0; font-size: 1.1rem;
        }

        .progress-section { background: #f0eee8; }
        .progress-board {
            display: grid; grid-template-columns: 1fr 1.4fr; gap: 36px; align-items: center;
            padding: 38px; background: var(--surface); border: 1px solid var(--line);
            border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
        }
        .progress-number { font-size: 4.3rem; font-weight: 900; line-height: 1; letter-spacing: -.07em; color: var(--orange); }
        .progress-board h3 { margin: 10px 0 5px; font-size: 1.4rem; }
        .progress-board p { color: var(--muted); margin: 0; }
        .progress-track { height: 13px; border-radius: 99px; background: #eceff1; overflow: hidden; margin: 20px 0 12px; }
        .progress-fill { width: 68%; height: 100%; background: linear-gradient(90deg, var(--orange), var(--yellow)); border-radius: inherit; }
        .progress-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: .82rem; }
        .progress-steps { display: flex; justify-content: space-between; margin-top: 27px; gap: 10px; }
        .progress-step { color: var(--muted); font-size: .8rem; }
        .progress-step.done { color: var(--teal); font-weight: 800; }

        .collection-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .collection {
            min-height: 230px;
            padding: 25px;
            border-radius: var(--radius-md);
            color: #fff;
            display: flex; flex-direction: column; justify-content: space-between;
            overflow: hidden; position: relative;
            background: var(--night);
        }
        .collection:nth-child(2) { background: var(--teal); }
        .collection:nth-child(3) { background: var(--orange); }
        .collection::after { content: ""; position: absolute; width: 145px; height: 145px; right: -35px; bottom: -40px; border: 1px solid rgba(255,255,255,.26); border-radius: 50%; }
        .collection h3 { font-size: 1.32rem; margin: 0; max-width: 180px; position: relative; z-index: 1; }
        .collection p { color: rgba(255,255,255,.78); font-size: .85rem; margin: 9px 0; max-width: 220px; position: relative; z-index: 1; }
        .collection-footer { display: flex; justify-content: space-between; align-items: center; position: relative; z-index: 1; }
        .badge-soft { border-radius: 999px; padding: 4px 10px; background: rgba(255,255,255,.17); font-size: .74rem; }
        .collection-footer a { font-weight: 800; }

        .demo-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 22px; }
        .step-nav { display: grid; gap: 8px; }
        .step-button {
            display: flex; align-items: center; gap: 15px; padding: 17px;
            border: 1px solid var(--line); border-radius: var(--radius-md);
            background: #fff; text-align: left; transition: .2s ease;
        }
        .step-button:hover, .step-button.active { border-color: var(--orange); box-shadow: var(--shadow-sm); transform: translateX(4px); }
        .step-index { color: var(--orange); font-weight: 900; }
        .demo-stage {
            min-height: 310px; padding: 34px; border-radius: var(--radius-lg);
            background: var(--night); color: #fff; position: relative; overflow: hidden;
        }
        .demo-stage::before { content: "MP4"; position: absolute; right: 25px; bottom: -28px; font-size: 10rem; line-height: 1; font-weight: 900; color: rgba(255,255,255,.05); }
        .demo-stage h3 { font-size: 2rem; margin: 28px 0 10px; position: relative; }
        .demo-stage p { color: #c7cfdb; max-width: 470px; position: relative; }
        .stage-label { display: inline-block; color: var(--yellow); font-size: .78rem; font-weight: 800; letter-spacing: .1em; position: relative; }

        .rank-layout { display: grid; grid-template-columns: 1fr .82fr; gap: 28px; }
        .rank-list, .quote-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
        .rank-list { padding: 12px 28px; }
        .rank-item { display: grid; grid-template-columns: 44px 1fr auto; gap: 15px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--line); }
        .rank-item:last-child { border: 0; }
        .rank-no { font-size: 1.55rem; font-weight: 900; color: var(--orange); }
        .rank-item h4 { margin: 0; font-size: 1rem; }
        .rank-item p { margin: 2px 0 0; color: var(--muted); font-size: .78rem; }
        .rank-score { color: var(--teal); font-weight: 850; font-size: .85rem; }
        .quote-box { padding: 33px; background: #fff8f4; border-color: #f7d6c8; }
        .quote-box i { color: var(--orange); font-size: 2rem; }
        .quote-box p { font-size: 1.16rem; font-weight: 750; margin: 17px 0; }
        .quote-box span { color: var(--muted); font-size: .84rem; }

        .news-layout { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; }
        .news-list { border-top: 2px solid var(--ink); }
        .news-item { display: flex; justify-content: space-between; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
        .news-item h3 { font-size: 1.05rem; margin: 0 0 4px; }
        .news-item h3 a:hover { color: var(--orange-dark); }
        .news-item p { margin: 0; color: var(--muted); font-size: .84rem; }
        .news-date { color: var(--muted); font-size: .78rem; white-space: nowrap; }
        .calendar-card { padding: 27px; background: var(--night); color: #fff; border-radius: var(--radius-lg); }
        .calendar-card h3 { font-size: 1.3rem; margin: 0 0 20px; }
        .calendar-row { display: flex; gap: 13px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.15); }
        .calendar-row strong { color: var(--yellow); min-width: 42px; }
        .calendar-row span { color: #d5dce5; font-size: .85rem; }

        .cta-section { padding: 70px 0; background: var(--teal); color: #fff; }
        .cta-wrap { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .cta-wrap h2 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.1; margin: 0 0 12px; letter-spacing: -.05em; }
        .cta-wrap p { max-width: 600px; margin: 0; color: rgba(255,255,255,.8); }
        .cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }
        .site-footer { background: var(--night); color: #fff; padding: 45px 0 25px; }
        .footer-top { display: flex; justify-content: space-between; gap: 30px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.13); }
        .footer-brand p { max-width: 330px; color: #9ca8b8; font-size: .86rem; margin: 15px 0 0; }
        .footer-note { color: #9ca8b8; font-size: .83rem; max-width: 360px; }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; color: #8491a3; font-size: .78rem; }
        .footer-bottom a:hover { color: #fff; }

        @media (max-width: 1024px) {
            .container { max-width: 92%; }
            .intro-grid, .rank-layout, .news-layout { gap: 28px; }
            .section-space { padding: 75px 0; }
        }
        @media (max-width: 768px) {
            .masthead { min-height: 72px; }
            .menu-toggle { display: block; }
            .main-nav {
                display: none; position: absolute; left: 4%; right: 4%; top: 72px;
                padding: 12px 20px; background: #fff; border: 1px solid var(--line);
                border-radius: 0 0 18px 18px; box-shadow: var(--shadow-lg); flex-direction: column; align-items: stretch; gap: 0;
            }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
            .main-nav a:last-child { border-bottom: 0; }
            .main-nav a::after { display: none; }
            .search-pill { display: none; }
            .hero { padding: 62px 0 56px; }
            .hero h1 { font-size: clamp(2.65rem, 12vw, 4.6rem); }
            .launch-panel { margin-top: 42px; }
            .intro-grid, .progress-board, .demo-grid, .rank-layout, .news-layout { grid-template-columns: 1fr; }
            .collection-grid { grid-template-columns: 1fr; }
            .collection { min-height: 190px; }
            .cta-wrap, .footer-top, .footer-bottom { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .container { max-width: 90%; }
            .brand { font-size: .98rem; gap: 7px; }
            .brand-mark { font-size: 1.45rem; }
            .brand small { display: none; }
            .hero-foot { gap: 16px; }
            .launch-panel, .progress-board, .rank-list, .quote-box, .calendar-card, .demo-stage { padding: 23px; }
            .launch-top { flex-direction: column-reverse; }
            .countdown { width: 86px; height: 86px; }
            .news-item { display: block; }
            .news-date { display: block; margin-top: 7px; }
            .progress-steps { display: grid; grid-template-columns: 1fr 1fr; }
            .btn { padding: .72rem 1.05rem; }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}