/* roulang page: index */
:root {
            --ink: #17212b;
            --muted: #6f7b85;
            --paper: #f7f8f5;
            --white: #ffffff;
            --line: #dfe5e4;
            --teal: #157a77;
            --teal-dark: #0e5d5c;
            --lime: #d6ef70;
            --gold: #c99343;
            --coral: #e36d58;
            --shadow: 0 18px 50px rgba(22, 48, 52, .09);
            --soft-shadow: 0 8px 24px rgba(22, 48, 52, .07);
            --radius: 18px;
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink);
            background: var(--paper);
            font-family: "Noto Sans SC", "Manrope", sans-serif;
            line-height: 1.75;
            letter-spacing: 0;
        }
        a { color: inherit; text-decoration: none; }
        img { display: block; width: 100%; object-fit: cover; }
        button, input { font: inherit; }
        button { cursor: pointer; }
        :focus-visible { outline: 3px solid rgba(21, 122, 119, .35); outline-offset: 3px; }
        .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--teal);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .12em;
            text-transform: uppercase;
        }
        .eyebrow::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--gold);
        }
        h1, h2, h3, p { margin-top: 0; }
        h1, h2, h3 { line-height: 1.2; }
        h2 { margin-bottom: 16px; font-size: clamp(28px, 4vw, 46px); letter-spacing: -.02em; }
        .section-head { max-width: 690px; margin-bottom: 34px; }
        .section-head p { color: var(--muted); margin-bottom: 0; font-size: 16px; }
        .section { padding: 96px 0; }
        .section.alt { background: #edf3f0; }
        .section.dark { background: #173f3e; color: #fff; }
        .section.dark .section-head p { color: #c5d5d2; }
        .btn {
            min-height: 48px;
            padding: 11px 20px;
            border: 1px solid transparent;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            font-weight: 700;
            transition: .25s ease;
        }
        .btn.primary { background: var(--lime); color: #183233; }
        .btn.primary:hover { background: #e4fa92; transform: translateY(-2px); box-shadow: 0 9px 20px rgba(214,239,112,.22); }
        .btn.outline { border-color: rgba(255,255,255,.35); color: #fff; background: transparent; }
        .btn.outline:hover { border-color: var(--lime); color: var(--lime); }
        .btn.light { background: #fff; color: var(--teal-dark); }
        .btn.light:hover { transform: translateY(-2px); box-shadow: var(--soft-shadow); }
        .badge {
            display: inline-flex;
            align-items: center;
            min-height: 25px;
            padding: 2px 9px;
            border-radius: 999px;
            background: #e7f4e9;
            color: #28704b;
            font-size: 12px;
            font-weight: 700;
        }
        .badge.gold { background: #f8ecd7; color: #9b6b26; }
        .badge.coral { background: #fde7e1; color: #b54c39; }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(247,248,245,.92);
            border-bottom: 1px solid rgba(223,229,228,.8);
            backdrop-filter: blur(16px);
        }
        .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 28px; }
        .brand { display: flex; align-items: center; gap: 11px; min-width: max-content; }
        .brand-mark {
            width: 36px;
            height: 36px;
            display: grid;
            place-items: center;
            border-radius: 10px;
            background: var(--teal);
            color: var(--lime);
            font-weight: 800;
            font-size: 17px;
            box-shadow: inset 0 0 0 1px rgba(255,255,255,.16);
        }
        .brand-name { font-weight: 800; font-size: 15px; }
        .main-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
        .main-nav a { color: #59666b; font-size: 14px; font-weight: 600; transition: .2s ease; }
        .main-nav a:hover, .main-nav a.active { color: var(--teal); }
        .nav-action { display: inline-flex; align-items: center; gap: 8px; color: var(--teal); font-size: 13px; font-weight: 800; }
        .menu-toggle { display: none; border: 0; background: transparent; font-size: 24px; color: var(--ink); }

        .hero {
            min-height: 670px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            background: #153e3d;
            color: #fff;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(14,46,46,.98) 12%, rgba(14,46,46,.78) 50%, rgba(14,46,46,.25)), url("https://images.unsplash.com/photo-1556742049-0cfed4f6a45d?auto=format&fit=crop&w=1800&q=88") center/cover;
        }
        .hero-inner { position: relative; z-index: 1; padding: 88px 0; }
        .hero-copy { max-width: 720px; }
        .hero .eyebrow { color: var(--lime); }
        .hero h1 { margin: 18px 0 22px; font-size: clamp(38px, 6vw, 74px); letter-spacing: -.045em; }
        .hero h1 em { color: var(--lime); font-style: normal; }
        .hero-lead { max-width: 650px; color: #d4e0dc; font-size: 18px; }
        .hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
        .hero-meta { display: flex; gap: 32px; flex-wrap: wrap; margin-top: 46px; }
        .hero-meta strong { display: block; color: var(--lime); font-size: 25px; line-height: 1.2; }
        .hero-meta span { color: #b8ccc8; font-size: 13px; }
        .hero-stamp {
            position: absolute;
            right: 4%;
            bottom: 13%;
            width: 175px;
            height: 175px;
            display: grid;
            place-items: center;
            border: 1px solid rgba(214,239,112,.55);
            border-radius: 50%;
            color: var(--lime);
            font-size: 14px;
            text-align: center;
            transform: rotate(-10deg);
        }

        .strip { background: var(--lime); color: #1c3d3b; }
        .strip-inner { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
        .strip strong { font-size: 15px; }
        .countdown { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; }
        .time-box { min-width: 32px; padding: 3px 6px; border-radius: 5px; background: #214946; color: #fff; text-align: center; }

        .three-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
        .point { padding: 30px; background: #fff; }
        .point-icon { color: var(--teal); font-size: 26px; margin-bottom: 14px; }
        .point h3 { margin-bottom: 8px; font-size: 19px; }
        .point p { margin: 0; color: var(--muted); font-size: 14px; }

        .card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
        .product-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--soft-shadow); transition: .25s ease; }
        .product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
        .product-image { height: 188px; position: relative; overflow: hidden; }
        .product-image img { height: 100%; transition: transform .4s ease; }
        .product-card:hover .product-image img { transform: scale(1.05); }
        .product-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,.42), transparent 45%); }
        .product-tag { position: absolute; top: 12px; left: 12px; z-index: 1; }
        .product-code { position: absolute; right: 12px; bottom: 10px; z-index: 1; color: #fff; font-size: 12px; font-weight: 700; }
        .product-body { padding: 17px; }
        .product-body h3 { margin-bottom: 8px; font-size: 17px; }
        .product-body p { min-height: 48px; margin-bottom: 13px; color: var(--muted); font-size: 13px; line-height: 1.65; }
        .product-foot { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #edf0ef; padding-top: 12px; }
        .rating { color: var(--gold); font-size: 13px; font-weight: 800; }
        .rating span { color: var(--muted); font-weight: 500; }

        .feature-layout { display: grid; grid-template-columns: .92fr 1.08fr; gap: 66px; align-items: center; }
        .feature-image { min-height: 430px; border-radius: 24px; overflow: hidden; position: relative; box-shadow: var(--shadow); }
        .feature-image img { height: 100%; }
        .image-note { position: absolute; left: 22px; bottom: 22px; padding: 14px 16px; background: rgba(255,255,255,.93); border-left: 3px solid var(--gold); border-radius: 8px; font-size: 13px; }
        .check-list { margin: 26px 0 0; padding: 0; list-style: none; }
        .check-list li { display: flex; gap: 13px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
        .check-list li::before { content: "✓"; flex: 0 0 23px; width: 23px; height: 23px; display: grid; place-items: center; border-radius: 50%; background: #e2f0dd; color: #397843; font-weight: 800; }

        .matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
        .matrix-item { padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
        .matrix-item strong { display: block; margin-bottom: 7px; font-size: 16px; }
        .matrix-item p { margin: 0; color: var(--muted); font-size: 13px; }
        .matrix-number { color: var(--gold); font: 800 27px "Manrope", sans-serif; margin-bottom: 12px; }

        .rank-layout { display: grid; grid-template-columns: 1fr .76fr; gap: 48px; align-items: start; }
        .rank-list { list-style: none; padding: 0; margin: 0; }
        .rank-item { display: grid; grid-template-columns: 35px 1fr auto auto; align-items: center; gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--line); }
        .rank-no { color: var(--gold); font: 800 20px "Manrope", sans-serif; }
        .rank-item strong { font-size: 15px; }
        .rank-item small { display: block; color: var(--muted); font-size: 12px; }
        .rank-hot { color: var(--coral); font-size: 12px; font-weight: 800; }
        .rank-score { font-weight: 800; color: var(--teal); }

        .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .article-card { background: #fff; border: 1px solid var(--line); border-radius: 15px; overflow: hidden; transition: .25s ease; }
        .article-card:hover { transform: translateY(-4px); box-shadow: var(--soft-shadow); }
        .article-card img { height: 145px; }
        .article-content { padding: 17px; }
        .article-content time { color: var(--gold); font-size: 12px; font-weight: 800; }
        .article-content h3 { margin: 8px 0 7px; font-size: 16px; }
        .article-content p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

        .trust-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 60px; align-items: center; }
        .trust-number { color: var(--lime); font: 800 clamp(60px, 9vw, 110px) "Manrope", sans-serif; line-height: 1; }
        .trust-copy p { color: #c7d7d4; }
        .quote { margin: 0; padding: 25px 28px; border-left: 3px solid var(--lime); background: rgba(255,255,255,.06); color: #edf7f2; font-size: 18px; }
        .quote cite { display: block; margin-top: 14px; color: #a6c0ba; font-size: 13px; font-style: normal; }

        .faq-list { max-width: 850px; }
        .faq-item { border-bottom: 1px solid var(--line); }
        .faq-item summary { padding: 22px 0; cursor: pointer; list-style: none; font-size: 17px; font-weight: 700; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after { content: "+"; float: right; color: var(--teal); font-size: 24px; font-weight: 400; }
        .faq-item[open] summary::after { content: "−"; }
        .faq-answer { max-width: 760px; padding: 0 35px 22px 0; color: var(--muted); font-size: 14px; }

        .closing { background: var(--teal); color: #fff; }
        .closing-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
        .closing h2 { margin-bottom: 8px; font-size: 32px; }
        .closing p { margin: 0; color: #cce0db; }

        .site-footer { padding: 64px 0 24px; background: #102e2e; color: #dbe7e2; }
        .footer-grid { display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 40px; padding-bottom: 45px; }
        .footer-brand p { max-width: 285px; color: #91aca6; font-size: 13px; }
        .footer-title { margin-bottom: 15px; color: #fff; font-size: 14px; font-weight: 800; }
        .footer-links { display: grid; gap: 9px; }
        .footer-links a { color: #91aca6; font-size: 13px; transition: .2s ease; }
        .footer-links a:hover { color: var(--lime); }
        .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #78918c; font-size: 12px; }

        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(3, 1fr); }
            .matrix { grid-template-columns: repeat(2, 1fr); }
            .hero-stamp { right: 2%; opacity: .7; }
        }
        @media (max-width: 768px) {
            .container { width: min(100% - 34px, var(--container)); }
            .section { padding: 70px 0; }
            .menu-toggle { display: block; margin-left: auto; }
            .main-nav {
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                display: none;
                padding: 17px;
                background: rgba(247,248,245,.98);
                border-bottom: 1px solid var(--line);
                box-shadow: var(--soft-shadow);
            }
            .main-nav.open { display: grid; gap: 0; }
            .main-nav a { padding: 12px 8px; border-bottom: 1px solid #e8edeb; }
            .nav-action { display: none; }
            .hero { min-height: 650px; }
            .hero-stamp { display: none; }
            .hero h1 { font-size: clamp(38px, 10vw, 60px); }
            .three-points, .feature-layout, .rank-layout, .trust-layout { grid-template-columns: 1fr; }
            .feature-image { min-height: 320px; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .article-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-brand { grid-column: 1 / -1; }
            .closing-inner { align-items: flex-start; flex-direction: column; }
        }
        @media (max-width: 520px) {
            .brand-name { max-width: 180px; line-height: 1.25; }
            .hero-inner { padding: 64px 0; }
            .hero-lead { font-size: 15px; }
            .hero-meta { gap: 20px; margin-top: 34px; }
            .strip-inner { min-height: 84px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 5px; }
            .card-grid, .article-grid, .matrix { grid-template-columns: 1fr; }
            .product-image { height: 210px; }
            .rank-item { grid-template-columns: 30px 1fr auto; }
            .rank-hot { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
            .footer-bottom { flex-direction: column; gap: 5px; }
        }