/* roulang page: index */
:root {
            --ink: #18283b;
            --ink-soft: #506176;
            --navy: #10283f;
            --blue: #2867a7;
            --blue-deep: #1e4f83;
            --sky: #edf5fb;
            --gold: #c99b48;
            --gold-soft: #f7eddc;
            --paper: #ffffff;
            --line: #dce7ef;
            --shadow: 0 18px 48px rgba(24, 54, 82, .10);
            --shadow-sm: 0 8px 24px rgba(24, 54, 82, .08);
            --radius: 18px;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink);
            background: #f8fbfd;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            font-size: 16px;
        }
        a { color: inherit; text-decoration: none; transition: .25s ease; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        .container { max-width: 1180px; }
        .topbar {
            background: var(--navy);
            border-bottom: 1px solid rgba(255,255,255,.11);
            position: sticky;
            top: 0;
            z-index: 20;
            box-shadow: 0 4px 20px rgba(10,31,50,.12);
        }
        .navbar { min-height: 76px; }
        .brand {
            color: #fff !important;
            font-weight: 800;
            letter-spacing: .04em;
            font-size: 1.2rem;
        }
        .brand-mark {
            display: inline-flex;
            width: 34px;
            height: 34px;
            align-items: center;
            justify-content: center;
            margin-right: 9px;
            border: 1px solid var(--gold);
            color: var(--gold);
            border-radius: 10px;
            font-size: .9rem;
        }
        .nav-link {
            color: rgba(255,255,255,.74) !important;
            padding: .55rem .9rem !important;
            border-radius: 8px;
            font-size: .95rem;
        }
        .nav-link:hover, .nav-link.active { color: #fff !important; background: rgba(255,255,255,.1); }
        .btn-main, .btn-outline-light-custom {
            border-radius: 10px;
            padding: .75rem 1.2rem;
            font-weight: 700;
            transition: .25s ease;
        }
        .btn-main {
            color: #fff;
            background: var(--blue);
            border: 1px solid var(--blue);
            box-shadow: 0 8px 18px rgba(40,103,167,.2);
        }
        .btn-main:hover, .btn-main:focus { color: #fff; background: var(--blue-deep); transform: translateY(-2px); }
        .btn-gold { background: var(--gold); border-color: var(--gold); color: #fff; }
        .btn-gold:hover, .btn-gold:focus { background: #ad7d32; border-color: #ad7d32; color: #fff; }
        .btn-outline-light-custom {
            color: #fff;
            border: 1px solid rgba(255,255,255,.35);
        }
        .btn-outline-light-custom:hover { background: #fff; color: var(--navy); }
        :focus-visible { outline: 3px solid rgba(201,155,72,.45); outline-offset: 3px; }
        .hero {
            padding: 84px 0 72px;
            background: linear-gradient(110deg, #f5f9fc 0%, #fff 57%, #edf5fb 100%);
            overflow: hidden;
        }
        .eyebrow, .section-kicker {
            color: var(--blue);
            font-size: .78rem;
            font-weight: 800;
            letter-spacing: .15em;
            text-transform: uppercase;
        }
        .hero h1 {
            font-size: clamp(2.45rem, 5vw, 4.5rem);
            line-height: 1.14;
            letter-spacing: -.045em;
            font-weight: 900;
            margin: 18px 0 22px;
        }
        .hero-lead { color: var(--ink-soft); max-width: 660px; font-size: 1.1rem; }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 30px 0; }
        .hero-metrics { display: flex; gap: 32px; flex-wrap: wrap; }
        .metric strong { display: block; color: var(--navy); font-size: 1.6rem; line-height: 1.2; }
        .metric span { color: var(--ink-soft); font-size: .85rem; }
        .guide-cover {
            min-height: 380px;
            padding: 28px;
            position: relative;
            color: #fff;
            background: var(--navy);
            border-radius: 24px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .guide-cover::after {
            content: "";
            width: 210px;
            height: 210px;
            border: 1px solid rgba(201,155,72,.5);
            border-radius: 50%;
            position: absolute;
            right: -50px;
            top: -42px;
        }
        .cover-label { color: var(--gold); font-weight: 800; letter-spacing: .12em; font-size: .75rem; }
        .guide-cover h2 { font-size: 2rem; line-height: 1.25; margin: 42px 0 14px; max-width: 330px; }
        .cover-list { border-top: 1px solid rgba(255,255,255,.2); padding-top: 17px; margin-top: 24px; color: rgba(255,255,255,.72); font-size: .9rem; }
        .cover-list div { margin: 8px 0; }
        .section { padding: 90px 0; }
        .section-muted { background: var(--sky); }
        .section-head { max-width: 700px; margin-bottom: 40px; }
        .section-head h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); line-height: 1.25; margin: 10px 0 14px; font-weight: 850; }
        .section-head p { color: var(--ink-soft); margin: 0; }
        .countdown-strip {
            background: var(--gold-soft);
            border-top: 1px solid #ead8b7;
            border-bottom: 1px solid #ead8b7;
            padding: 26px 0;
        }
        .countdown-box { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
        .countdown-box h3 { font-size: 1.15rem; margin: 0 0 4px; }
        .countdown-box p { color: var(--ink-soft); margin: 0; font-size: .9rem; }
        .timer { display: flex; gap: 9px; }
        .time-unit { min-width: 60px; padding: 9px 7px; text-align: center; background: #fff; border: 1px solid #ead8b7; border-radius: 10px; }
        .time-unit strong { display: block; font-size: 1.35rem; color: var(--navy); line-height: 1.2; }
        .time-unit span { color: var(--ink-soft); font-size: .72rem; }
        .feature-wall { display: grid; grid-template-columns: 1.35fr .9fr .9fr; grid-template-rows: 1fr 1fr; gap: 18px; }
        .feature-card {
            min-height: 168px;
            padding: 25px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: .25s ease;
        }
        .feature-card:first-child { grid-row: span 2; background: var(--navy); color: #fff; }
        .feature-card:hover, .plan-card:hover, .info-panel:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
        .feature-icon { color: var(--gold); font-size: 1.5rem; margin-bottom: 25px; }
        .feature-card h3 { font-size: 1.2rem; margin: 0 0 9px; }
        .feature-card p { color: var(--ink-soft); font-size: .9rem; margin: 0; }
        .feature-card:first-child p { color: rgba(255,255,255,.72); }
        .plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .plan-card { position: relative; padding: 30px 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: .25s ease; }
        .plan-card.recommended { border: 2px solid var(--gold); }
        .recommend { position: absolute; right: 18px; top: 18px; padding: 3px 9px; background: var(--gold-soft); color: #8b6428; border-radius: 20px; font-size: .75rem; font-weight: 700; }
        .plan-card h3 { font-size: 1.25rem; }
        .plan-card .price { font-size: 2rem; font-weight: 900; color: var(--navy); margin: 14px 0; }
        .plan-card ul { padding: 0; list-style: none; color: var(--ink-soft); font-size: .9rem; }
        .plan-card li { padding: 7px 0; border-bottom: 1px solid #edf2f5; }
        .plan-card li::before { content: "✓"; color: var(--gold); font-weight: 800; margin-right: 9px; }
        .info-layout { display: grid; grid-template-columns: 1.3fr .7fr; gap: 24px; align-items: stretch; }
        .info-list { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
        .info-item { display: flex; justify-content: space-between; gap: 20px; padding: 22px 25px; border-bottom: 1px solid var(--line); }
        .info-item:last-child { border-bottom: 0; }
        .info-item a:hover { color: var(--blue); }
        .info-item small { color: #8795a5; white-space: nowrap; }
        .info-panel { padding: 27px; background: var(--navy); color: #fff; border-radius: var(--radius); transition: .25s ease; }
        .info-panel p { color: rgba(255,255,255,.7); font-size: .9rem; }
        .tag { display: inline-block; color: var(--blue); background: var(--sky); border-radius: 20px; padding: 4px 10px; margin: 3px; font-size: .78rem; }
        .lead-box { padding: 45px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); }
        .lead-box h2 { font-weight: 850; margin-bottom: 12px; }
        .lead-box p { color: var(--ink-soft); }
        .form-control { border: 1px solid var(--line); border-radius: 10px; padding: .78rem 1rem; }
        .form-control:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(40,103,167,.12); }
        .privacy-note { color: #7a8997; font-size: .78rem; margin-top: 13px; }
        .accordion-item { border: 1px solid var(--line); border-radius: 12px !important; margin-bottom: 12px; overflow: hidden; }
        .accordion-button { color: var(--ink); font-weight: 700; background: #fff; box-shadow: none !important; }
        .accordion-button:not(.collapsed) { color: var(--blue-deep); background: var(--sky); }
        .accordion-body { color: var(--ink-soft); font-size: .92rem; background: #fff; }
        footer { background: var(--navy); color: rgba(255,255,255,.68); padding: 44px 0 25px; }
        .footer-brand { color: #fff; font-size: 1.15rem; font-weight: 800; }
        .footer-line { border-top: 1px solid rgba(255,255,255,.13); margin-top: 35px; padding-top: 20px; font-size: .8rem; }
        @media (max-width: 991px) {
            .hero { padding-top: 62px; }
            .feature-wall { grid-template-columns: 1fr 1fr; }
            .feature-card:first-child { grid-row: auto; grid-column: span 2; }
        }
        @media (max-width: 767px) {
            .navbar { min-height: 68px; }
            .hero { padding: 52px 0; }
            .hero h1 { font-size: 2.55rem; }
            .guide-cover { margin-top: 30px; min-height: 330px; }
            .section { padding: 62px 0; }
            .countdown-box, .info-layout { display: block; }
            .timer { margin-top: 20px; }
            .plan-grid { grid-template-columns: 1fr; }
            .info-panel { margin-top: 18px; }
            .lead-box { padding: 28px 22px; }
        }
        @media (max-width: 520px) {
            .feature-wall { display: block; }
            .feature-card { margin-bottom: 14px; }
            .feature-card:first-child { min-height: 200px; }
            .hero-metrics { gap: 18px; }
            .time-unit { min-width: 51px; }
            .time-unit strong { font-size: 1.1rem; }
            .info-item { display: block; padding: 18px; }
            .info-item small { display: block; margin-top: 5px; }
        }

/* 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}