/* roulang page: index */
:root {
            --primary: #F08A6C;
            --primary-dark: #E0704F;
            --primary-light: #FFE9E1;
            --cream: #FFF7F2;
            --ink: #211D1A;
            --warmgray: #F7F4F1;
            --bodygray: #6B6560;
            --leaf: #7A9B76;
            --line: #EFE6E1;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-sm: 0 2px 16px rgba(45, 20, 10, 0.06);
            --shadow-hover: 0 24px 60px -20px rgba(240, 138, 108, 0.35);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--cream);
            color: var(--ink);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ---------- Header Navigation ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 247, 242, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(45, 20, 10, 0.07);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ink);
            transition: opacity 0.2s;
        }
        .logo:hover {
            opacity: 0.85;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #F08A6C, #E0704F);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 14px rgba(240, 138, 108, 0.35);
        }
        .logo-icon svg {
            width: 20px;
            height: 20px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: #4A4540;
            transition: color 0.25s;
            position: relative;
            padding: 4px 2px;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
            border-radius: 2px;
        }
        .nav-links a:hover {
            color: var(--primary-dark);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary-dark);
            font-weight: 600;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--line);
            background: #fff;
            align-items: center;
            justify-content: center;
            transition: all 0.25s;
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            background: var(--primary-light);
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--ink);
            margin: 2px 0;
            border-radius: 2px;
            transition: all 0.3s;
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 16px 24px 24px;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #f3ece7;
            color: var(--ink);
        }
        .mobile-menu a:last-of-type {
            border-bottom: none;
        }
        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
            text-align: center;
        }
        @media (max-width: 992px) {
            .nav-links {
                display: none;
            }
            .header-cta .btn {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.open {
                display: block;
            }
        }
        /* ---------- Buttons ---------- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 9999px;
            transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
            line-height: 1.2;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(240, 138, 108, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(240, 138, 108, 0.4);
            border-color: #d25e3e;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(240, 138, 108, 0.3);
        }
        .btn-primary::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 60%;
            height: 100%;
            background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.25), transparent);
            transition: left 0.5s ease;
        }
        .btn-primary:hover::after {
            left: 130%;
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid #d9cfc8;
            color: var(--ink);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-download {
            padding: 12px 26px;
            font-size: 15px;
        }
        .btn-download svg {
            width: 18px;
            height: 18px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }
        /* ---------- Hero ---------- */
        .hero {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(180deg, #FFF7F2 0%, #FFE9E1 55%, #FFF7F2 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.18;
            pointer-events: none;
            clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(240, 138, 108, 0.22), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            animation: float-bg 8s ease-in-out infinite;
        }
        @keyframes float-bg {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-20px);
            }
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--line);
            border-radius: 9999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: #8a5a44;
            margin-bottom: 28px;
            box-shadow: 0 2px 10px rgba(45, 20, 10, 0.05);
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--leaf);
            border-radius: 50%;
        }
        .hero h1 {
            font-size: clamp(42px, 6vw, 72px);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, #E0704F, #F08A6C);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 19px;
            font-weight: 400;
            color: #6B6560;
            margin-bottom: 24px;
            letter-spacing: 0.01em;
        }
        .hero-desc {
            font-size: 16px;
            color: #7a726c;
            line-height: 1.8;
            max-width: 620px;
            margin: 0 auto 36px;
        }
        .hero-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .hero-meta {
            font-size: 13px;
            color: #9a908a;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        /* ---------- Browser Mockup ---------- */
        .hero-visual {
            position: relative;
            margin-top: 64px;
            max-width: 720px;
            margin-left: auto;
            margin-right: auto;
            animation: mockup-float 6s ease-in-out infinite;
        }
        @keyframes mockup-float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        .browser-mockup {
            background: #fff;
            border-radius: 18px;
            box-shadow: 0 30px 80px -20px rgba(45, 20, 10, 0.2), 0 0 0 1px var(--line);
            overflow: hidden;
        }
        .browser-top {
            display: flex;
            align-items: center;
            padding: 14px 18px;
            background: #fbf8f5;
            border-bottom: 1px solid var(--line);
            gap: 12px;
        }
        .browser-dots {
            display: flex;
            gap: 6px;
        }
        .browser-dots span {
            width: 11px;
            height: 11px;
            border-radius: 50%;
        }
        .browser-dots span:nth-child(1) {
            background: #f26d6d;
        }
        .browser-dots span:nth-child(2) {
            background: #f5bd4e;
        }
        .browser-dots span:nth-child(3) {
            background: #7ac47c;
        }
        .browser-url {
            flex: 1;
            background: #f0ebe6;
            border-radius: 8px;
            padding: 6px 14px;
            font-size: 13px;
            color: #8a8480;
            text-align: left;
        }
        .browser-content {
            display: flex;
            min-height: 280px;
            background: #fff;
        }
        .browser-sidebar {
            width: 44px;
            background: #faf7f4;
            border-right: 1px solid #f1ebe6;
            padding: 14px 10px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .browser-sidebar span {
            width: 100%;
            height: 6px;
            background: #e8dfd8;
            border-radius: 3px;
            display: block;
        }
        .browser-sidebar span:nth-child(1) {
            background: var(--primary);
            width: 80%;
        }
        .browser-main {
            flex: 1;
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .main-hero-line {
            background: linear-gradient(135deg, #ffd9cc, #ffe9e1);
            border-radius: 10px;
            height: 60px;
            width: 70%;
        }
        .main-cards {
            display: flex;
            gap: 14px;
        }
        .main-cards span {
            flex: 1;
            height: 70px;
            border-radius: 10px;
            background: #f7f2ee;
            border: 1px solid #efe9e4;
        }
        .main-cards span:nth-child(2) {
            background: #fdf0eb;
        }
        .float-badge {
            position: absolute;
            background: #fff;
            border-radius: 16px;
            padding: 12px 18px;
            box-shadow: 0 16px 40px rgba(45, 20, 10, 0.12);
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--line);
            animation: float-y 3.5s ease-in-out infinite;
        }
        .float-badge svg {
            width: 18px;
            height: 18px;
        }
        .badge-speed {
            top: 30px;
            left: -16px;
        }
        .badge-privacy {
            bottom: 30px;
            right: -16px;
            animation-delay: 1.2s;
        }
        @keyframes float-y {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(8px);
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 110px 0 56px;
            }
            .hero-visual {
                margin-top: 40px;
            }
            .badge-speed {
                left: 0;
                top: 16px;
            }
            .badge-privacy {
                right: 0;
                bottom: 16px;
            }
            .browser-content {
                min-height: 200px;
            }
        }
        /* ---------- Section General ---------- */
        .section {
            padding: 96px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-title {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 18px;
            color: var(--ink);
        }
        .section-desc {
            font-size: 16px;
            color: var(--bodygray);
            line-height: 1.75;
            max-width: 640px;
        }
        /* ---------- Features ---------- */
        .features {
            background: var(--warmgray);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .features-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 64px;
            align-items: start;
        }
        .features-left {
            position: sticky;
            top: 100px;
        }
        .features-list {
            display: flex;
            flex-direction: column;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px 20px 28px 24px;
            border-bottom: 1px solid var(--line);
            transition: background 0.3s, transform 0.3s;
            position: relative;
            border-radius: 0;
            cursor: default;
        }
        .feature-item:first-child {
            border-top: 1px solid var(--line);
        }
        .feature-item:hover {
            background: var(--primary-light);
            border-radius: 14px;
            transform: translateX(4px);
        }
        .feature-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            height: 60%;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .feature-item:hover::before {
            opacity: 1;
        }
        .feature-num {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            min-width: 36px;
            padding-top: 3px;
            font-variant-numeric: tabular-nums;
        }
        .feature-body {
            flex: 1;
        }
        .feature-name {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .feature-desc {
            font-size: 14.5px;
            color: var(--bodygray);
            line-height: 1.65;
        }
        .feature-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(240, 138, 108, 0.12);
            color: var(--primary);
            transition: transform 0.3s, background 0.3s;
            flex-shrink: 0;
        }
        .feature-item:hover .feature-arrow {
            transform: translateX(4px);
            background: var(--primary);
            color: #fff;
        }
        @media (max-width: 992px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .features-left {
                position: static;
            }
        }
        /* ---------- Scenes ---------- */
        .scenes-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .scene-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #f0ece7;
            min-height: 360px;
            transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .scene-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .scene-card:hover img {
            transform: scale(1.04);
        }
        .scene-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 32px 20px 20px;
            background: linear-gradient(180deg, transparent, rgba(33, 29, 26, 0.85));
            color: #fff;
            transition: background 0.3s;
        }
        .scene-card:hover .scene-overlay {
            background: linear-gradient(180deg, transparent, rgba(33, 29, 26, 0.92));
        }
        .scene-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .scene-sub {
            font-size: 14px;
            opacity: 0.85;
            line-height: 1.5;
        }
        .scene-wide {
            min-height: 280px;
        }
        .scene-tall {
            min-height: 360px;
        }
        .scene-card:nth-child(1) {
            grid-column: span 7;
        }
        .scene-card:nth-child(2) {
            grid-column: span 5;
        }
        .scene-card:nth-child(3) {
            grid-column: span 5;
        }
        .scene-card:nth-child(4) {
            grid-column: span 7;
        }
        @media (max-width: 992px) {
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .scene-card,
            .scene-card:nth-child(n) {
                grid-column: span 1;
                min-height: 220px;
            }
            .scene-tall,
            .scene-wide {
                min-height: 220px;
            }
        }
        /* ---------- Showcase / Social Proof ---------- */
        .showcase {
            background: var(--ink);
            color: #fff;
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }
        .showcase::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(240, 138, 108, 0.15), transparent 70%);
            border-radius: 50%;
        }
        .showcase-quote {
            text-align: center;
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 400;
            line-height: 1.5;
            max-width: 800px;
            margin: 0 auto 64px;
            color: #e8e2dc;
            position: relative;
            padding: 0 20px;
        }
        .showcase-quote::before {
            content: '“';
            font-size: 80px;
            color: var(--primary);
            font-family: Georgia, serif;
            position: absolute;
            top: -30px;
            left: -10px;
            line-height: 1;
        }
        .showcase-quote .quote-author {
            display: block;
            margin-top: 20px;
            font-size: 15px;
            color: #8f857d;
            font-style: normal;
        }
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 72px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            transition: background 0.3s, transform 0.3s;
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .stat-num {
            font-size: 48px;
            font-weight: 700;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stat-num span {
            color: var(--primary);
        }
        .stat-label {
            font-size: 14px;
            color: #9a908a;
            letter-spacing: 0.04em;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-num {
                font-size: 38px;
            }
        }
        /* ---------- News Area ---------- */
        .news-area {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 32px;
            margin-top: 8px;
            margin-bottom: 72px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.07);
        }
        .news-list {
            display: flex;
            flex-direction: column;
        }
        .news-list-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .news-list-head h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
        }
        .news-list-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.25s;
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            padding-left: 8px;
        }
        .news-list-item .tag {
            font-size: 11px;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
            flex-shrink: 0;
            background: rgba(240, 138, 108, 0.18);
            color: #f0a088;
        }
        .news-list-item a {
            font-size: 14.5px;
            color: #cfc8c3;
            transition: color 0.2s;
            flex: 1;
            line-height: 1.4;
        }
        .news-list-item a:hover {
            color: var(--primary);
        }
        .news-list-item .date {
            font-size: 12px;
            color: #6b635d;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }
        .news-sidebar {
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            padding-left: 32px;
        }
        .news-sidebar h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: #bab2ac;
        }
        .news-side-item {
            padding: 14px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            margin-bottom: 12px;
            transition: background 0.25s, transform 0.25s;
            cursor: pointer;
        }
        .news-side-item:hover {
            background: rgba(240, 138, 108, 0.1);
            transform: translateX(4px);
        }
        .news-side-item .n-title {
            font-size: 14px;
            font-weight: 500;
            color: #e5ded9;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-side-item .n-meta {
            font-size: 12px;
            color: #7a726c;
        }
        @media (max-width: 992px) {
            .news-area {
                grid-template-columns: 1fr;
                padding: 24px;
            }
            .news-sidebar {
                border-left: none;
                padding-left: 0;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 24px;
            }
        }
        /* ---------- Media Logos ---------- */
        .media-logos {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 24px 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .media-logo-item {
            font-size: 16px;
            font-weight: 500;
            color: #6b635d;
            letter-spacing: 0.08em;
            transition: color 0.25s;
            white-space: nowrap;
        }
        .media-logo-item:hover {
            color: #fff;
        }
        /* ---------- Pricing ---------- */
        .pricing {
            background: var(--warmgray);
            border-bottom: 1px solid var(--line);
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
            margin-top: 48px;
        }
        .price-card {
            background: var(--cream);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--line);
            transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .price-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 60px -20px rgba(45, 20, 10, 0.15);
            border-color: var(--primary);
        }
        .price-card.recommended {
            background: linear-gradient(160deg, #F08A6C, #E0704F);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 24px 70px -20px rgba(240, 138, 108, 0.45);
            transform: translateY(-8px);
            z-index: 2;
        }
        .price-card.recommended:hover {
            transform: translateY(-12px);
            box-shadow: 0 30px 80px -20px rgba(240, 138, 108, 0.55);
        }
        .price-card .badge-rec {
            position: absolute;
            top: -12px;
            right: 28px;
            background: #fff;
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
            letter-spacing: 0.03em;
        }
        .price-card.recommended .badge-rec {
            background: var(--ink);
            color: #fff;
        }
        .price-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .price-amount {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 4px;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .price-amount .currency {
            font-size: 20px;
            font-weight: 600;
            vertical-align: top;
            margin-right: 2px;
        }
        .price-amount .period {
            font-size: 14px;
            font-weight: 400;
            color: var(--bodygray);
        }
        .price-card.recommended .price-amount .period {
            color: rgba(255, 255, 255, 0.8);
        }
        .price-desc {
            font-size: 14px;
            color: var(--bodygray);
            margin-bottom: 24px;
        }
        .price-card.recommended .price-desc {
            color: rgba(255, 255, 255, 0.85);
        }
        .price-features {
            list-style: none;
            margin-bottom: 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .price-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14.5px;
            color: #4A4540;
        }
        .price-card.recommended .price-features li {
            color: rgba(255, 255, 255, 0.92);
        }
        .price-features .check {
            color: var(--leaf);
            font-weight: 700;
            flex-shrink: 0;
            line-height: 1.4;
        }
        .price-card.recommended .price-features .check {
            color: rgba(255, 255, 255, 0.9);
        }
        @media (max-width: 992px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin-left: auto;
                margin-right: auto;
            }
            .price-card.recommended {
                transform: none;
            }
            .price-card.recommended:hover {
                transform: translateY(-4px);
            }
        }
        .pricing-note {
            text-align: center;
            font-size: 13px;
            color: var(--bodygray);
            margin-top: 32px;
        }
        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
            transition: background 0.25s;
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 12px;
            font-size: 16.5px;
            font-weight: 600;
            color: var(--ink);
            transition: color 0.25s;
            position: relative;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary-dark);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            flex-shrink: 0;
            transition: background 0.3s, transform 0.3s;
        }
        .faq-icon::before {
            content: '';
            width: 12px;
            height: 2px;
            background: var(--primary-dark);
            border-radius: 2px;
        }
        .faq-icon::after {
            content: '';
            width: 2px;
            height: 12px;
            background: var(--primary-dark);
            border-radius: 2px;
            position: absolute;
            transition: transform 0.3s;
        }
        .faq-item[open] .faq-icon::after {
            transform: scaleY(0);
        }
        .faq-item[open] summary {
            color: var(--primary-dark);
        }
        .faq-answer {
            padding: 0 12px 24px;
            font-size: 15px;
            color: var(--bodygray);
            line-height: 1.75;
            max-width: 680px;
        }
        .faq-more {
            text-align: center;
            margin-top: 40px;
        }
        /* ---------- CTA ---------- */
        .cta-section {
            padding: 80px 0;
        }
        .cta-card {
            background: linear-gradient(135deg, #F08A6C 0%, #E0704F 60%, #d25e3e 100%);
            border-radius: 32px;
            padding: 72px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 30px 80px -20px rgba(224, 112, 79, 0.5);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            pointer-events: none;
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 40px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-sub {
            font-size: 17px;
            opacity: 0.92;
            margin-bottom: 36px;
            position: relative;
            z-index: 1;
        }
        .cta-btn-row {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-card .btn-white {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 30px rgba(33, 29, 26, 0.15);
        }
        .cta-card .btn-white:hover {
            background: #f8f2ee;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(33, 29, 26, 0.2);
        }
        .cta-meta {
            margin-top: 28px;
            font-size: 13px;
            opacity: 0.8;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .cta-card {
                padding: 48px 24px;
                border-radius: 24px;
            }
        }
        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--ink);
            color: #a09890;
            padding: 80px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 4fr 2fr 2fr 3fr;
            gap: 40px;
            margin-bottom: 56px;
        }
        .footer-brand .logo {
            margin-bottom: 20px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: #8a827a;
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: #6b635d;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* ---------- Reveal Animation ---------- */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 {
            transition-delay: 0.08s;
        }
        .reveal-delay-2 {
            transition-delay: 0.16s;
        }
        .reveal-delay-3 {
            transition-delay: 0.24s;
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }
        /* ---------- Focus states ---------- */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        /* ---------- Mobile tweaks ---------- */
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 40px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-desc {
                font-size: 14.5px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
            .section {
                padding: 64px 0;
            }
            .feature-item {
                padding: 22px 12px;
            }
            .news-area {
                padding: 20px;
            }
            .news-list-item {
                flex-wrap: wrap;
            }
            .news-list-item .date {
                margin-left: auto;
            }
            .price-card {
                padding: 32px 24px;
            }
        }

/* roulang page: category1 */
/* ---------- Design Variables ---------- */
:root {
  --primary: #F08A6C;
  --primary-dark: #E0704F;
  --primary-light: #FFE9E1;
  --cream: #FFF7F2;
  --ink: #211D1A;
  --warmgray: #F7F4F1;
  --bodygray: #6B6560;
  --leaf: #7A9B76;
  --line: #EFE6E1;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 16px rgba(45, 20, 10, 0.06);
  --shadow-hover: 0 24px 60px -20px rgba(240, 138, 108, 0.35);
}

/* ---------- Base Reset ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: 15px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
}

/* ---------- Section Spacing ---------- */
.section-block {
  padding: 80px 0;
}

@media (max-width: 768px) {
  .section-block {
    padding: 48px 0;
  }
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary-dark);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  color: var(--bodygray);
  max-width: 560px;
  line-height: 1.75;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 28px;
  }
}

/* ---------- Header Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 247, 242, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 30px rgba(45, 20, 10, 0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: opacity 0.2s;
  flex-shrink: 0;
}

.logo:hover {
  opacity: 0.85;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #F08A6C, #E0704F);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(240, 138, 108, 0.35);
}

.logo-icon svg {
  width: 20px;
  height: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: #4A4540;
  transition: color 0.25s;
  position: relative;
  padding: 4px 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
  border-radius: 2px;
}

.nav-links a:hover {
  color: var(--primary-dark);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--primary-dark);
  font-weight: 600;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  align-items: center;
  justify-content: center;
  transition: all 0.25s;
  flex-shrink: 0;
}

.nav-toggle:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  margin: 2px 0;
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 16px 24px 24px;
}

.mobile-menu a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid #f3ece7;
  color: var(--ink);
}

.mobile-menu a:last-of-type {
  border-bottom: none;
}

.mobile-menu .btn {
  margin-top: 16px;
  width: 100%;
  text-align: center;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .header-cta .btn {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mobile-menu.open {
    display: block;
  }
}

@media (min-width: 769px) {
  .nav-links {
    display: flex;
  }
  .header-cta .btn {
    display: inline-flex;
  }
  .nav-toggle {
    display: none;
  }
  .mobile-menu {
    display: none !important;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 9999px;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  line-height: 1.2;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(240, 138, 108, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(240, 138, 108, 0.4);
  border-color: #d25e3e;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(240, 138, 108, 0.3);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.55s ease;
}

.btn-primary:hover::after {
  left: 130%;
}

.btn-outline {
  background: transparent;
  border: 1px solid #ddd0c9;
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 20px rgba(240, 138, 108, 0.2);
}

.btn-light:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(240, 138, 108, 0.3);
}

.btn-download::before {
  content: '';
  width: 18px;
  height: 18px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v12m0 0l-4-4m4 4l4-4'/%3E%3Cpath d='M4 21h16'/%3E%3C/svg%3E") center/contain no-repeat;
  flex-shrink: 0;
}

.btn-outline.btn-download::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23211D1A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v12m0 0l-4-4m4 4l4-4'/%3E%3Cpath d='M4 21h16'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.badge-new {
  background: rgba(122, 155, 118, 0.15);
  color: #557452;
}

.badge-opt {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.badge-fix {
  background: #EFEEE8;
  color: #6B6560;
}

.badge-type {
  background: #F3EDE8;
  color: #5A4E46;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 8px;
  font-weight: 500;
}

/* ---------- Page Hero ---------- */
.page-hero {
  padding: 148px 0 56px;
  background: linear-gradient(180deg, #FFF2EC 0%, var(--cream) 100%);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  opacity: 0.08;
  z-index: 0;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--bodygray);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--primary-dark);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.breadcrumb svg {
  width: 14px;
  height: 14px;
  opacity: 0.5;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
  max-width: 680px;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 18px;
  line-height: 1.75;
  color: var(--bodygray);
  max-width: 620px;
}

@media (max-width: 768px) {
  .page-hero {
    padding: 112px 0 40px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero p {
    font-size: 16px;
  }
}

/* ---------- Quick Nav Pills ---------- */
.quick-nav {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 72px;
  z-index: 500;
}

.quick-nav .container {
  display: flex;
  gap: 12px;
  padding-top: 16px;
  padding-bottom: 16px;
  flex-wrap: wrap;
}

.quick-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 22px;
  border-radius: 9999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: all 0.25s;
}

.quick-nav a:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.quick-nav a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .quick-nav {
    top: 72px;
  }
  .quick-nav .container {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-top: 12px;
    padding-bottom: 12px;
    -webkit-overflow-scrolling: touch;
  }
  .quick-nav a {
    flex-shrink: 0;
  }
}

/* ---------- Docs Section ---------- */
.doc-section {
  padding: 72px 0 0;
}

.doc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 40px;
}

.doc-list {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.doc-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s, transform 0.25s;
  position: relative;
}

.doc-item:last-child {
  border-bottom: none;
}

.doc-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.25s;
  border-radius: 0 2px 2px 0;
}

.doc-item:hover {
  background: var(--primary-light);
}

.doc-item:hover::before {
  opacity: 1;
}

.doc-item .doc-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--warmgray);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.3s;
}

.doc-item:hover .doc-icon {
  background: #fff;
}

.doc-item .doc-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--primary-dark);
}

.doc-item-content {
  flex: 1;
  min-width: 0;
}

.doc-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
  transition: color 0.25s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-item:hover .doc-item-title {
  color: var(--primary-dark);
}

.doc-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--bodygray);
}

.doc-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.doc-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.doc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #F7BBA4);
}

.doc-card .doc-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.doc-card .doc-card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary-dark);
}

.doc-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.doc-card p {
  font-size: 14px;
  color: var(--bodygray);
  line-height: 1.7;
  margin-bottom: 16px;
}

.doc-version {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--bodygray);
  background: var(--warmgray);
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 16px;
}

@media (max-width: 900px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }
}

/* ---------- Changelog Timeline ---------- */
.changelog-section {
  padding: 80px 0;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 48px auto 0;
  padding-left: 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding-left: 48px;
  margin-bottom: 32px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 5px;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--primary);
  box-shadow: 0 2px 8px rgba(240, 138, 108, 0.3);
}

.timeline-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s, transform 0.3s;
}

.timeline-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.timeline-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.ver-date {
  font-size: 13px;
  color: var(--bodygray);
  margin-left: auto;
}

.timeline-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 6px;
}

.timeline-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: #4A4540;
  line-height: 1.7;
}

.timeline-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.6;
}

@media (max-width: 640px) {
  .timeline::before {
    left: 8px;
  }
  .timeline-dot {
    left: 2px;
    width: 14px;
    height: 14px;
  }
  .timeline-item {
    padding-left: 36px;
  }
  .timeline-card {
    padding: 18px 16px;
  }
  .ver-date {
    margin-left: 0;
    width: 100%;
  }
}

/* ---------- FAQ ---------- */
.faq-section {
  padding: 16px 0 80px;
  background: var(--warmgray);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 40px;
}

.faq-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 8px 24px;
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.faq-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  outline: none;
  transition: color 0.25s;
}

.faq-card summary::-webkit-details-marker {
  display: none;
}

.faq-card summary:hover {
  color: var(--primary-dark);
}

.faq-card summary::after {
  content: '';
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--warmgray);
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23211D1A' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  background-size: 14px;
  background-position: center;
  background-repeat: no-repeat;
  transition: background 0.3s, transform 0.3s;
}

.faq-card[open] summary::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23211D1A' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E");
  transform: rotate(360deg);
  background-color: var(--primary-light);
}

.faq-card[open] {
  border-color: var(--primary);
}

.faq-card p {
  font-size: 15px;
  color: var(--bodygray);
  line-height: 1.75;
  padding-bottom: 20px;
  border-top: 1px solid #F4EFEB;
  padding-top: 14px;
}

@media (max-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Help CTA ---------- */
.help-cta {
  padding: 24px 0 80px;
}

.help-cta-card {
  background: var(--primary-light);
  border: 1px solid #FBD5C6;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.help-cta-card::before {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(240, 138, 108, 0.12);
  pointer-events: none;
}

.help-cta-card h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.help-cta-card p {
  font-size: 16px;
  color: var(--bodygray);
  max-width: 420px;
  line-height: 1.75;
}

.help-cta-actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.help-cta-actions .btn {
  white-space: nowrap;
}

@media (max-width: 900px) {
  .help-cta-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 36px 28px;
  }
}

@media (max-width: 640px) {
  .help-cta-card {
    padding: 28px 20px;
  }
  .help-cta-actions .btn {
    width: 100%;
    text-align: center;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: #1E1A17;
  color: #d8d2cd;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
  font-size: 22px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: #A49A92;
  max-width: 280px;
  margin-top: 0;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: #A49A92;
  padding: 5px 0;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #6B635D;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.08s;
}

.reveal-delay-2 {
  transition-delay: 0.16s;
}

.reveal-delay-3 {
  transition-delay: 0.24s;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}