/* roulang page: index */
:root {
            --primary: #ff5c63;
            --primary-dark: #e6424d;
            --primary-soft: #fff0f1;
            --secondary: #6f72ff;
            --secondary-dark: #5356dc;
            --accent: #35d1a1;
            --accent-soft: #e9fbf5;
            --ink: #171a2b;
            --ink-soft: #41465d;
            --muted: #73798e;
            --surface: #ffffff;
            --surface-soft: #f7f8fc;
            --surface-deep: #12172a;
            --surface-deep-2: #1a2038;
            --border: #e7e9f1;
            --border-dark: rgba(255, 255, 255, .12);
            --warning: #ffb84d;
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --shadow-sm: 0 8px 24px rgba(26, 30, 55, .07);
            --shadow-md: 0 18px 50px rgba(26, 30, 55, .12);
            --shadow-lg: 0 28px 80px rgba(13, 17, 34, .22);
            --transition: .25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            color: var(--ink);
            background: var(--surface);
            font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body.nav-open {
            overflow: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: var(--primary);
        }

        button,
        input {
            font: inherit;
        }

        button {
            border: 0;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(111, 114, 255, .28);
            outline-offset: 3px;
        }

        img,
        svg {
            display: block;
            max-width: 100%;
        }

        .container {
            width: min(1160px, calc(100% - 40px));
        }

        .section {
            position: relative;
            padding: 104px 0;
        }

        .section-soft {
            background: var(--surface-soft);
        }

        .section-dark {
            color: #ffffff;
            background:
                radial-gradient(circle at 10% 10%, rgba(111, 114, 255, .22), transparent 30%),
                radial-gradient(circle at 90% 90%, rgba(255, 92, 99, .16), transparent 32%),
                var(--surface-deep);
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            color: var(--primary);
            font-size: .82rem;
            font-weight: 800;
            letter-spacing: .08em;
        }

        .section-kicker::before {
            width: 24px;
            height: 2px;
            content: "";
            border-radius: 99px;
            background: currentColor;
        }

        .section-title {
            max-width: 760px;
            margin: 0;
            color: var(--ink);
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 850;
            line-height: 1.18;
            letter-spacing: -.045em;
        }

        .section-dark .section-title {
            color: #ffffff;
        }

        .section-description {
            max-width: 690px;
            margin: 20px 0 0;
            color: var(--muted);
            font-size: 1.05rem;
        }

        .section-dark .section-description {
            color: rgba(255, 255, 255, .68);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 48px;
        }

        .section-head-copy {
            max-width: 780px;
        }

        .text-link {
            display: inline-flex;
            flex: 0 0 auto;
            align-items: center;
            gap: 10px;
            color: var(--ink);
            font-weight: 750;
        }

        .text-link:hover {
            gap: 14px;
        }

        .text-link svg {
            width: 18px;
            height: 18px;
        }

        .site-header {
            position: absolute;
            z-index: 1000;
            top: 0;
            right: 0;
            left: 0;
            padding: 18px 0;
        }

        .site-header.scrolled {
            position: fixed;
            padding: 10px 0;
            background: rgba(18, 23, 42, .88);
            border-bottom: 1px solid var(--border-dark);
            box-shadow: 0 10px 35px rgba(0, 0, 0, .15);
            backdrop-filter: blur(18px);
        }

        .navbar {
            min-height: 64px;
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            max-width: 520px;
            margin: 0;
            color: #ffffff;
            font-size: 1.12rem;
            font-weight: 850;
            letter-spacing: -.02em;
        }

        .navbar-brand:hover,
        .navbar-brand:focus {
            color: #ffffff;
        }

        .brand-symbol {
            position: relative;
            display: inline-grid;
            flex: 0 0 auto;
            width: 46px;
            height: 46px;
            place-items: center;
            overflow: hidden;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, .28);
            border-radius: 15px;
            background: linear-gradient(145deg, var(--primary), var(--secondary));
            box-shadow: 0 12px 28px rgba(255, 92, 99, .26);
        }

        .brand-symbol::before,
        .brand-symbol::after {
            position: absolute;
            top: 7px;
            width: 8px;
            height: 8px;
            content: "";
            border: 2px solid rgba(255, 255, 255, .9);
            border-bottom: 0;
            border-left: 0;
        }

        .brand-symbol::before {
            left: 10px;
            transform: rotate(-24deg);
        }

        .brand-symbol::after {
            right: 10px;
            transform: rotate(24deg);
        }

        .brand-play {
            width: 0;
            height: 0;
            margin-left: 3px;
            border-top: 8px solid transparent;
            border-bottom: 8px solid transparent;
            border-left: 13px solid #ffffff;
        }

        .brand-copy {
            display: flex;
            min-width: 0;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-title {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .brand-subtitle {
            margin-top: 5px;
            color: rgba(255, 255, 255, .58);
            font-size: .68rem;
            font-weight: 600;
            letter-spacing: .04em;
        }

        .navbar-nav {
            align-items: center;
            gap: 8px;
        }

        .navbar .nav-link {
            position: relative;
            padding: 10px 18px !important;
            color: rgba(255, 255, 255, .72);
            border-radius: 999px;
            font-size: .95rem;
            font-weight: 700;
        }

        .navbar .nav-link:hover,
        .navbar .nav-link.active {
            color: #ffffff;
            background: rgba(255, 255, 255, .1);
        }

        .navbar .nav-link.active::after {
            position: absolute;
            right: 18px;
            bottom: 5px;
            left: 18px;
            height: 2px;
            content: "";
            border-radius: 99px;
            background: var(--primary);
        }

        .nav-action {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 20px;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 999px;
            background: rgba(255, 255, 255, .08);
            font-size: .92rem;
            font-weight: 750;
        }

        .nav-action:hover {
            color: #ffffff;
            border-color: rgba(255, 255, 255, .34);
            background: rgba(255, 255, 255, .14);
        }

        .navbar-toggler {
            width: 46px;
            height: 46px;
            padding: 0;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 14px;
            background: rgba(255, 255, 255, .08);
            box-shadow: none !important;
        }

        .menu-lines {
            display: grid;
            gap: 5px;
            justify-items: center;
        }

        .menu-lines span {
            width: 20px;
            height: 2px;
            border-radius: 99px;
            background: #ffffff;
            transition: transform var(--transition), opacity var(--transition);
        }

        .hero {
            position: relative;
            min-height: 860px;
            padding: 178px 0 108px;
            overflow: hidden;
            color: #ffffff;
            background:
                radial-gradient(circle at 18% 22%, rgba(111, 114, 255, .34), transparent 30%),
                radial-gradient(circle at 84% 26%, rgba(255, 92, 99, .28), transparent 28%),
                linear-gradient(145deg, #101426 0%, #171d35 54%, #101426 100%);
        }

        .hero::before {
            position: absolute;
            top: 130px;
            right: -180px;
            width: 520px;
            height: 520px;
            content: "";
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 50%;
            box-shadow:
                0 0 0 70px rgba(255, 255, 255, .025),
                0 0 0 140px rgba(255, 255, 255, .018);
        }

        .hero::after {
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 330px;
            height: 330px;
            content: "";
            border-radius: 50%;
            background: rgba(53, 209, 161, .08);
            filter: blur(10px);
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 24px;
            padding: 8px 13px;
            color: rgba(255, 255, 255, .86);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 999px;
            background: rgba(255, 255, 255, .07);
            font-size: .82rem;
            font-weight: 700;
            backdrop-filter: blur(12px);
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 6px rgba(53, 209, 161, .12);
        }

        .hero h1 {
            max-width: 720px;
            margin: 0;
            font-size: clamp(2.75rem, 6vw, 5.15rem);
            font-weight: 900;
            line-height: 1.05;
            letter-spacing: -.065em;
        }

        .hero h1 span {
            display: block;
            margin-top: 12px;
            color: transparent;
            background: linear-gradient(90deg, #ffffff 0%, #ff9ea2 45%, #8e91ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
        }

        .hero-lead {
            max-width: 680px;
            margin: 28px 0 0;
            color: rgba(255, 255, 255, .68);
            font-size: 1.1rem;
            line-height: 1.85;
        }

        .hero-search {
            position: relative;
            display: flex;
            max-width: 700px;
            margin-top: 34px;
            padding: 8px;
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 22px;
            background: rgba(255, 255, 255, .1);
            box-shadow: 0 24px 55px rgba(0, 0, 0, .18);
            backdrop-filter: blur(18px);
        }

        .hero-search-icon {
            display: grid;
            width: 52px;
            flex: 0 0 52px;
            color: rgba(255, 255, 255, .5);
            place-items: center;
        }

        .hero-search-icon svg {
            width: 21px;
            height: 21px;
        }

        .hero-search input {
            width: 100%;
            min-width: 0;
            padding: 0 10px 0 0;
            color: #ffffff;
            border: 0;
            outline: 0;
            background: transparent;
        }

        .hero-search input::placeholder {
            color: rgba(255, 255, 255, .48);
        }

        .hero-search .btn {
            flex: 0 0 auto;
        }

        .search-message {
            min-height: 26px;
            margin: 12px 0 0 8px;
            color: rgba(255, 255, 255, .68);
            font-size: .86rem;
        }

        .btn {
            display: inline-flex;
            min-height: 50px;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 0 22px;
            border: 1px solid transparent;
            border-radius: 15px;
            font-weight: 800;
            transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn-primary {
            color: #ffffff;
            border-color: var(--primary);
            background: var(--primary);
            box-shadow: 0 12px 25px rgba(255, 92, 99, .25);
        }

        .btn-primary:hover,
        .btn-primary:focus,
        .btn-primary:active {
            color: #ffffff !important;
            border-color: var(--primary-dark) !important;
            background: var(--primary-dark) !important;
            box-shadow: 0 16px 32px rgba(255, 92, 99, .32) !important;
        }

        .btn-light-custom {
            color: var(--ink);
            border-color: #ffffff;
            background: #ffffff;
            box-shadow: 0 14px 32px rgba(0, 0, 0, .14);
        }

        .btn-light-custom:hover {
            color: var(--ink);
            background: #f4f5fa;
        }

        .btn-outline-custom {
            color: var(--ink);
            border-color: var(--border);
            background: transparent;
        }

        .btn-outline-custom:hover {
            color: var(--primary);
            border-color: rgba(255, 92, 99, .42);
            background: var(--primary-soft);
        }

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

        .hero-tag {
            padding: 7px 12px;
            color: rgba(255, 255, 255, .66);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 999px;
            background: rgba(255, 255, 255, .045);
            font-size: .8rem;
        }

        .hero-visual {
            position: relative;
            max-width: 480px;
            margin-left: auto;
        }

        .player-card {
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, .08);
            box-shadow: var(--shadow-lg);
            backdrop-filter: blur(18px);
            transform: rotate(1.5deg);
        }

        .player-cover {
            position: relative;
            min-height: 430px;
            overflow: hidden;
            background:
                linear-gradient(180deg, transparent 32%, rgba(10, 13, 28, .9) 100%),
                radial-gradient(circle at 70% 22%, rgba(255, 184, 77, .64), transparent 13%),
                linear-gradient(135deg, #403e8f 0%, #1f244d 42%, #e35f68 100%);
        }

        .player-cover::before {
            position: absolute;
            top: 70px;
            right: -40px;
            width: 290px;
            height: 290px;
            content: "";
            border-radius: 46% 54% 64% 36% / 52% 44% 56% 48%;
            background: linear-gradient(145deg, rgba(255, 255, 255, .18), rgba(255, 255, 255, .02));
            transform: rotate(18deg);
        }

        .player-cover::after {
            position: absolute;
            right: 34px;
            bottom: 112px;
            width: 230px;
            height: 150px;
            content: "";
            opacity: .6;
            border-radius: 120px 120px 20px 20px;
            background: #11162b;
            box-shadow:
                -170px 44px 0 -40px #11162b,
                -85px 68px 0 -50px #11162b;
        }

        .player-topbar {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px;
        }

        .quality-pill {
            padding: 7px 11px;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 999px;
            background: rgba(12, 15, 31, .38);
            font-size: .75rem;
            font-weight: 800;
            backdrop-filter: blur(10px);
        }

        .live-pill {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: rgba(255, 255, 255, .78);
            font-size: .76rem;
            font-weight: 700;
        }

        .live-pill::before {
            width: 7px;
            height: 7px;
            content: "";
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 5px rgba(255, 92, 99, .16);
        }

        .play-button {
            position: absolute;
            z-index: 4;
            top: 46%;
            left: 50%;
            display: grid;
            width: 78px;
            height: 78px;
            color: var(--ink);
            cursor: pointer;
            border: 1px solid rgba(255, 255, 255, .58);
            border-radius: 50%;
            background: rgba(255, 255, 255, .9);
            box-shadow: 0 18px 45px rgba(0, 0, 0, .25);
            place-items: center;
            transform: translate(-50%, -50%);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .play-button:hover {
            box-shadow: 0 22px 58px rgba(0, 0, 0, .32);
            transform: translate(-50%, -50%) scale(1.06);
        }

        .play-button::before {
            width: 0;
            height: 0;
            margin-left: 5px;
            content: "";
            border-top: 11px solid transparent;
            border-bottom: 11px solid transparent;
            border-left: 17px solid var(--primary);
        }

        .player-info {
            position: absolute;
            z-index: 3;
            right: 0;
            bottom: 0;
            left: 0;
            padding: 28px;
        }

        .player-category {
            margin-bottom: 8px;
            color: #ffb5b9;
            font-size: .78rem;
            font-weight: 800;
            letter-spacing: .08em;
        }

        .player-title {
            margin: 0;
            color: #ffffff;
            font-size: 1.7rem;
            font-weight: 850;
        }

        .player-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 14px;
            margin-top: 10px;
            color: rgba(255, 255, 255, .64);
            font-size: .82rem;
        }

        .floating-note {
            position: absolute;
            z-index: 6;
            right: -26px;
            bottom: 58px;
            width: 210px;
            padding: 17px;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 19px;
            background: rgba(28, 34, 60, .88);
            box-shadow: 0 18px 40px rgba(0, 0, 0, .22);
            backdrop-filter: blur(15px);
            transform: rotate(-2deg);
        }

        .floating-note-label {
            color: var(--accent);
            font-size: .7rem;
            font-weight: 850;
            letter-spacing: .08em;
        }

        .floating-note strong {
            display: block;
            margin-top: 5px;
            color: #ffffff;
            font-size: .94rem;
        }

        .floating-note span {
            display: block;
            margin-top: 4px;
            color: rgba(255, 255, 255, .54);
            font-size: .74rem;
        }

        .trust-strip {
            position: relative;
            z-index: 8;
            margin-top: -38px;
        }

        .trust-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: 24px;
            background: #ffffff;
            box-shadow: var(--shadow-md);
        }

        .trust-item {
            position: relative;
            display: flex;
            min-height: 116px;
            align-items: center;
            gap: 14px;
            padding: 24px;
        }

        .trust-item:not(:last-child)::after {
            position: absolute;
            top: 26px;
            right: 0;
            bottom: 26px;
            width: 1px;
            content: "";
            background: var(--border);
        }

        .trust-icon {
            display: grid;
            width: 46px;
            height: 46px;
            flex: 0 0 46px;
            color: var(--primary);
            border-radius: 14px;
            background: var(--primary-soft);
            place-items: center;
        }

        .trust-icon.accent {
            color: #149b74;
            background: var(--accent-soft);
        }

        .trust-icon.secondary {
            color: var(--secondary);
            background: #efefff;
        }

        .trust-icon.warning {
            color: #c77d13;
            background: #fff6e8;
        }

        .trust-icon svg {
            width: 21px;
            height: 21px;
        }

        .trust-copy strong {
            display: block;
            color: var(--ink);
            font-size: .95rem;
        }

        .trust-copy span {
            display: block;
            margin-top: 3px;
            color: var(--muted);
            font-size: .77rem;
            line-height: 1.5;
        }

        .feature-intro {
            padding-top: 122px;
        }

        .editorial-card {
            height: 100%;
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .editorial-card:hover {
            border-color: rgba(111, 114, 255, .26);
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }

        .poster {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .poster svg {
            width: 100%;
            height: 100%;
        }

        .poster::after {
            position: absolute;
            inset: 0;
            content: "";
            pointer-events: none;
            background: linear-gradient(180deg, transparent 50%, rgba(9, 12, 28, .28) 100%);
        }

        .poster-label {
            position: absolute;
            z-index: 2;
            top: 16px;
            left: 16px;
            padding: 6px 10px;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 999px;
            background: rgba(16, 20, 39, .46);
            font-size: .72rem;
            font-weight: 800;
            backdrop-filter: blur(8px);
        }

        .poster-score {
            position: absolute;
            z-index: 2;
            right: 16px;
            bottom: 14px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: #ffffff;
            font-size: .76rem;
            font-weight: 800;
        }

        .poster-score::before {
            content: "★";
            color: var(--warning);
        }

        .editorial-content {
            padding: 24px;
        }

        .editorial-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .mini-badge {
            display: inline-flex;
            align-items: center;
            min-height: 26px;
            padding: 0 9px;
            color: var(--secondary-dark);
            border-radius: 999px;
            background: #efefff;
            font-size: .7rem;
            font-weight: 800;
        }

        .mini-badge.green {
            color: #12815f;
            background: var(--accent-soft);
        }

        .mini-badge.orange {
            color: #a96b13;
            background: #fff4e3;
        }

        .editorial-title {
            margin: 0;
            color: var(--ink);
            font-size: 1.28rem;
            font-weight: 850;
            line-height: 1.4;
        }

        .editorial-description {
            margin: 12px 0 0;
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.75;
        }

        .editorial-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            margin-top: 20px;
            padding-top: 18px;
            border-top: 1px solid var(--border);
        }

        .episode-note {
            color: var(--ink-soft);
            font-size: .78rem;
            font-weight: 700;
        }

        .circle-arrow {
            display: grid;
            width: 38px;
            height: 38px;
            color: var(--ink);
            border: 1px solid var(--border);
            border-radius: 50%;
            place-items: center;
        }

        .editorial-card:hover .circle-arrow {
            color: #ffffff;
            border-color: var(--primary);
            background: var(--primary);
        }

        .circle-arrow svg {
            width: 16px;
            height: 16px;
        }

        .experience-shell {
            position: relative;
            overflow: hidden;
            padding: 60px;
            border-radius: var(--radius-xl);
            background:
                radial-gradient(circle at 92% 10%, rgba(255, 92, 99, .25), transparent 28%),
                linear-gradient(140deg, #171d35, #101426);
            box-shadow: var(--shadow-lg);
        }

        .experience-shell::after {
            position: absolute;
            top: -90px;
            right: -80px;
            width: 280px;
            height: 280px;
            content: "";
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 50%;
            box-shadow: 0 0 0 50px rgba(255, 255, 255, .025);
        }

        .experience-copy {
            position: relative;
            z-index: 2;
        }

        .experience-copy h2 {
            margin: 0;
            color: #ffffff;
            font-size: clamp(2rem, 4vw, 3.3rem);
            font-weight: 880;
            line-height: 1.2;
            letter-spacing: -.045em;
        }

        .experience-copy p {
            max-width: 600px;
            margin: 20px 0 0;
            color: rgba(255, 255, 255, .64);
        }

        .feature-list {
            display: grid;
            gap: 16px;
            margin-top: 30px;
        }

        .feature-list-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .feature-check {
            display: grid;
            width: 30px;
            height: 30px;
            flex: 0 0 30px;
            color: var(--accent);
            border: 1px solid rgba(53, 209, 161, .24);
            border-radius: 10px;
            background: rgba(53, 209, 161, .1);
            place-items: center;
        }

        .feature-check svg {
            width: 16px;
            height: 16px;
        }

        .feature-list-item strong {
            display: block;
            color: #ffffff;
            font-size: .95rem;
        }

        .feature-list-item span {
            display: block;
            margin-top: 3px;
            color: rgba(255, 255, 255, .5);
            font-size: .8rem;
        }

        .experience-stack {
            position: relative;
            z-index: 2;
            display: grid;
            gap: 14px;
        }

        .experience-panel {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 19px;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 20px;
            background: rgba(255, 255, 255, .07);
            backdrop-filter: blur(12px);
            transition: transform var(--transition), background-color var(--transition);
        }

        .experience-panel:hover {
            background: rgba(255, 255, 255, .11);
            transform: translateX(-5px);
        }

        .experience-number {
            display: grid;
            width: 44px;
            height: 44px;
            flex: 0 0 44px;
            color: #ffffff;
            border-radius: 14px;
            background: linear-gradient(145deg, var(--primary), var(--secondary));
            font-size: .85rem;
            font-weight: 850;
            place-items: center;
        }

        .experience-panel strong {
            display: block;
            color: #ffffff;
            font-size: .92rem;
        }

        .experience-panel span {
            display: block;
            margin-top: 4px;
            color: rgba(255, 255, 255, .52);
            font-size: .76rem;
        }

        .update-list {
            display: grid;
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .update-item {
            display: grid;
            grid-template-columns: 72px minmax(0, 1fr) auto;
            align-items: center;
            gap: 22px;
            padding: 24px 26px;
            transition: background-color var(--transition);
        }

        .update-item:not(:last-child) {
            border-bottom: 1px solid var(--border);
        }

        .update-item:hover {
            background: #fafaff;
        }

        .update-index {
            display: grid;
            width: 54px;
            height: 54px;
            color: var(--secondary);
            border-radius: 17px;
            background: #efefff;
            font-size: 1rem;
            font-weight: 900;
            place-items: center;
        }

        .update-item:nth-child(2) .update-index {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .update-item:nth-child(3) .update-index {
            color: #16815f;
            background: var(--accent-soft);
        }

        .update-item:nth-child(4) .update-index {
            color: #a96b13;
            background: #fff4e3;
        }

        .update-content {
            min-width: 0;
        }

        .update-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0;
            color: var(--ink);
            font-size: 1.05rem;
            font-weight: 850;
        }

        .update-title small {
            padding: 3px 8px;
            color: var(--primary);
            border-radius: 999px;
            background: var(--primary-soft);
            font-size: .65rem;
            font-weight: 850;
        }

        .update-summary {
            margin: 7px 0 0;
            overflow: hidden;
            color: var(--muted);
            font-size: .85rem;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .update-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--muted);
            font-size: .77rem;
            font-weight: 700;
        }

        .update-status {
            padding: 7px 11px;
            color: #17795d;
            border-radius: 999px;
            background: var(--accent-soft);
            white-space: nowrap;
        }

        .method-card {
            position: relative;
            height: 100%;
            padding: 32px;
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .method-card::before {
            position: absolute;
            top: 0;
            right: 0;
            width: 110px;
            height: 110px;
            content: "";
            border-radius: 0 0 0 110px;
            background: linear-gradient(145deg, rgba(111, 114, 255, .08), transparent);
        }

        .method-number {
            display: inline-grid;
            width: 46px;
            height: 46px;
            color: #ffffff;
            border-radius: 15px;
            background: var(--secondary);
            font-size: .9rem;
            font-weight: 900;
            place-items: center;
            box-shadow: 0 12px 24px rgba(111, 114, 255, .22);
        }

        .method-card:nth-child(2) .method-number {
            background: var(--primary);
            box-shadow: 0 12px 24px rgba(255, 92, 99, .22);
        }

        .method-card:nth-child(3) .method-number {
            background: #1ca87e;
            box-shadow: 0 12px 24px rgba(53, 209, 161, .24);
        }

        .method-card h3 {
            margin: 24px 0 0;
            font-size: 1.25rem;
            font-weight: 850;
        }

        .method-card p {
            margin: 12px 0 0;
            color: var(--muted);
            font-size: .9rem;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        .stat-card {
            padding: 26px;
            border: 1px solid rgba(255, 255, 255, .11);
            border-radius: 20px;
            background: rgba(255, 255, 255, .06);
        }

        .stat-value {
            display: block;
            color: #ffffff;
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -.04em;
        }

        .stat-label {
            display: block;
            margin-top: 8px;
            color: rgba(255, 255, 255, .5);
            font-size: .78rem;
        }

        .guidance-card {
            display: flex;
            height: 100%;
            flex-direction: column;
            justify-content: space-between;
            padding: 34px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .guidance-icon {
            display: grid;
            width: 52px;
            height: 52px;
            color: var(--primary);
            border-radius: 17px;
            background: var(--primary-soft);
            place-items: center;
        }

        .guidance-icon svg {
            width: 24px;
            height: 24px;
        }

        .guidance-card h3 {
            margin: 24px 0 0;
            font-size: 1.3rem;
            font-weight: 850;
        }

        .guidance-card p {
            margin: 12px 0 0;
            color: var(--muted);
            font-size: .9rem;
        }

        .guidance-tip {
            margin-top: 26px;
            padding-top: 20px;
            color: var(--ink-soft);
            border-top: 1px solid var(--border);
            font-size: .8rem;
            font-weight: 750;
        }

        .faq-wrap {
            max-width: 880px;
            margin: 48px auto 0;
        }

        .accordion {
            --bs-accordion-border-color: var(--border);
            --bs-accordion-border-radius: 18px;
            --bs-accordion-inner-border-radius: 17px;
            --bs-accordion-btn-focus-box-shadow: none;
            --bs-accordion-active-bg: #ffffff;
            --bs-accordion-active-color: var(--ink);
            display: grid;
            gap: 14px;
        }

        .accordion-item {
            overflow: hidden;
            border: 1px solid var(--border) !important;
            border-radius: 18px !important;
            background: #ffffff;
            box-shadow: 0 7px 22px rgba(26, 30, 55, .045);
        }

        .accordion-button {
            padding: 22px 24px;
            color: var(--ink);
            background: #ffffff;
            font-size: .98rem;
            font-weight: 800;
        }

        .accordion-button:not(.collapsed) {
            color: var(--ink);
            background: #ffffff;
            box-shadow: none;
        }

        .accordion-button::after {
            width: 30px;
            height: 30px;
            background-color: var(--surface-soft);
            background-position: center;
            background-size: 14px;
            border-radius: 9px;
        }

        .accordion-body {
            padding: 0 24px 24px;
            color: var(--muted);
            font-size: .9rem;
            line-height: 1.85;
        }

        .cta-section {
            padding: 84px 0;
        }

        .cta-panel {
            position: relative;
            overflow: hidden;
            padding: 60px;
            border-radius: var(--radius-xl);
            background:
                radial-gradient(circle at 85% 30%, rgba(255, 255, 255, .18), transparent 24%),
                linear-gradient(135deg, var(--primary) 0%, #e74e66 42%, var(--secondary) 100%);
            box-shadow: 0 28px 70px rgba(111, 114, 255, .24);
        }

        .cta-panel::before {
            position: absolute;
            top: -100px;
            right: -60px;
            width: 280px;
            height: 280px;
            content: "";
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 50%;
            box-shadow:
                0 0 0 40px rgba(255, 255, 255, .05),
                0 0 0 80px rgba(255, 255, 255, .025);
        }

        .cta-copy {
            position: relative;
            z-index: 2;
        }

        .cta-copy h2 {
            max-width: 700px;
            margin: 0;
            color: #ffffff;
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 900;
            line-height: 1.18;
            letter-spacing: -.045em;
        }

        .cta-copy p {
            max-width: 620px;
            margin: 18px 0 0;
            color: rgba(255, 255, 255, .75);
        }

        .subscribe-form {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 10px;
            max-width: 510px;
            margin-top: 28px;
            padding: 8px;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 20px;
            background: rgba(255, 255, 255, .14);
            backdrop-filter: blur(12px);
        }

        .subscribe-form input {
            width: 100%;
            min-width: 0;
            padding: 0 14px;
            color: #ffffff;
            border: 0;
            outline: 0;
            background: transparent;
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, .68);
        }

        .subscribe-message {
            position: relative;
            z-index: 2;
            min-height: 24px;
            margin: 10px 0 0 8px;
            color: rgba(255, 255, 255, .84);
            font-size: .8rem;
        }

        .site-footer {
            color: rgba(255, 255, 255, .62);
            background: var(--surface-deep);
        }

        .footer-main {
            padding: 66px 0 42px;
            border-bottom: 1px solid var(--border-dark);
        }

        .footer-brand {
            max-width: 610px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 850;
        }

        .footer-logo:hover {
            color: #ffffff;
        }

        .footer-description {
            max-width: 590px;
            margin: 20px 0 0;
            color: rgba(255, 255, 255, .5);
            font-size: .88rem;
        }

        .footer-note {
            padding: 18px 20px;
            border: 1px solid var(--border-dark);
            border-radius: 16px;
            background: rgba(255, 255, 255, .04);
            color: rgba(255, 255, 255, .54);
            font-size: .78rem;
            line-height: 1.75;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 0;
            font-size: .78rem;
        }

        .footer-domain {
            color: rgba(255, 255, 255, .38);
        }

        .back-top {
            position: fixed;
            z-index: 900;
            right: 24px;
            bottom: 24px;
            display: grid;
            width: 48px;
            height: 48px;
            color: #ffffff;
            cursor: pointer;
            visibility: hidden;
            border-radius: 15px;
            background: var(--primary);
            box-shadow: 0 14px 30px rgba(255, 92, 99, .3);
            opacity: 0;
            place-items: center;
            transform: translateY(12px);
            transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background-color var(--transition);
        }

        .back-top.visible {
            visibility: visible;
            opacity: 1;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--primary-dark);
        }

        .back-top svg {
            width: 19px;
            height: 19px;
        }

        @media (max-width: 1199.98px) {
            .navbar-brand {
                max-width: 430px;
            }

            .hero {
                min-height: auto;
            }

            .floating-note {
                right: -5px;
            }

            .experience-shell {
                padding: 52px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 84px 0;
            }

            .site-header {
                padding: 14px 0;
            }

            .navbar-brand {
                max-width: calc(100% - 66px);
            }

            .navbar-collapse {
                position: absolute;
                top: 70px;
                right: 0;
                left: 0;
                padding: 14px;
                border: 1px solid rgba(255, 255, 255, .13);
                border-radius: 20px;
                background: rgba(18, 23, 42, .97);
                box-shadow: 0 24px 50px rgba(0, 0, 0, .28);
                backdrop-filter: blur(18px);
            }

            .navbar-nav {
                align-items: stretch;
            }

            .navbar .nav-link {
                text-align: center;
            }

            .nav-action {
                width: 100%;
                margin-top: 6px;
            }

            .hero {
                padding-top: 155px;
            }

            .hero-visual {
                max-width: 610px;
                margin: 64px auto 0;
            }

            .player-cover {
                min-height: 500px;
            }

            .floating-note {
                right: 20px;
            }

            .trust-panel {
                grid-template-columns: repeat(2, 1fr);
            }

            .trust-item:nth-child(2)::after {
                display: none;
            }

            .trust-item:nth-child(-n+2) {
                border-bottom: 1px solid var(--border);
            }

            .section-head {
                align-items: flex-start;
                flex-direction: column;
            }

            .experience-shell {
                padding: 46px;
            }

            .experience-stack {
                margin-top: 46px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-panel {
                padding: 50px;
            }

            .footer-note {
                margin-top: 30px;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                width: min(100% - 28px, 1160px);
            }

            .section {
                padding: 72px 0;
            }

            .section-title {
                font-size: 2.25rem;
            }

            .section-description {
                font-size: .97rem;
            }

            .brand-title {
                font-size: 1rem;
            }

            .brand-subtitle {
                display: none;
            }

            .hero {
                padding: 142px 0 88px;
            }

            .hero h1 {
                font-size: clamp(2.55rem, 12vw, 4rem);
            }

            .hero-lead {
                font-size: 1rem;
            }

            .hero-search {
                align-items: stretch;
                flex-wrap: wrap;
                padding: 8px;
            }

            .hero-search-icon {
                width: 42px;
                flex-basis: 42px;
            }

            .hero-search input {
                width: calc(100% - 42px);
                min-height: 48px;
            }

            .hero-search .btn {
                width: 100%;
                margin-top: 7px;
            }

            .player-cover {
                min-height: 410px;
            }

            .floating-note {
                right: 12px;
                bottom: 30px;
                width: 190px;
            }

            .trust-strip {
                margin-top: -24px;
            }

            .trust-panel {
                grid-template-columns: 1fr;
            }

            .trust-item {
                min-height: 100px;
            }

            .trust-item:not(:last-child) {
                border-bottom: 1px solid var(--border);
            }

            .trust-item::after {
                display: none;
            }

            .feature-intro {
                padding-top: 96px;
            }

            .experience-shell {
                padding: 34px 26px;
                border-radius: 26px;
            }

            .update-item {
                grid-template-columns: 54px minmax(0, 1fr);
                gap: 16px;
                padding: 21px;
            }

            .update-index {
                width: 48px;
                height: 48px;
            }

            .update-meta {
                grid-column: 2;
                justify-content: space-between;
            }

            .update-summary {
                white-space: normal;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .cta-section {
                padding: 66px 0;
            }

            .cta-panel {
                padding: 38px 26px;
                border-radius: 27px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form input {
                min-height: 48px;
            }

            .subscribe-form .btn {
                width: 100%;
            }

            .footer-bottom {
                align-items: flex-start;
                flex-direction: column;
            }
        }

        @media (max-width: 519.98px) {
            .section {
                padding: 64px 0;
            }

            .navbar-brand {
                gap: 9px;
            }

            .brand-symbol {
                width: 42px;
                height: 42px;
                border-radius: 13px;
            }

            .brand-title {
                max-width: 210px;
            }

            .hero {
                padding-top: 128px;
            }

            .hero h1 {
                font-size: 2.55rem;
                letter-spacing: -.055em;
            }

            .hero-tags {
                gap: 7px;
            }

            .hero-tag {
                font-size: .73rem;
            }

            .hero-visual {
                margin-top: 48px;
            }

            .player-card {
                border-radius: 26px;
            }

            .player-cover {
                min-height: 360px;
            }

            .player-info {
                padding: 22px;
            }

            .player-title {
                font-size: 1.35rem;
            }

            .play-button {
                width: 66px;
                height: 66px;
            }

            .floating-note {
                display: none;
            }

            .section-head {
                margin-bottom: 34px;
            }

            .editorial-content,
            .method-card,
            .guidance-card {
                padding: 24px;
            }

            .experience-panel {
                padding: 16px;
            }

            .update-item {
                grid-template-columns: 44px minmax(0, 1fr);
                padding: 18px 16px;
            }

            .update-index {
                width: 42px;
                height: 42px;
                border-radius: 13px;
                font-size: .84rem;
            }

            .update-title {
                align-items: flex-start;
                flex-direction: column;
                gap: 6px;
            }

            .update-meta {
                grid-column: 1 / -1;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stat-card {
                padding: 22px;
            }

            .accordion-button {
                padding: 19px;
                font-size: .9rem;
            }

            .accordion-body {
                padding: 0 19px 20px;
            }

            .back-top {
                right: 16px;
                bottom: 16px;
                width: 44px;
                height: 44px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *,
            *::before,
            *::after {
                scroll-behavior: auto !important;
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
            }
        }