/* roulang page: index */
:root {
            --color-primary: #2B3D2E;
            --color-primary-dark: #1E2C21;
            --color-secondary: #6B5D4F;
            --color-accent: #8C6E4A;
            --color-accent-hover: #7A5E3D;
            --color-bg: #F5F0E8;
            --color-bg-light: #FAF7F2;
            --color-text: #1C1C1A;
            --color-text-muted: #5A5148;
            --color-border: #D8CFC2;
            --color-white: #FFFFFF;
            --color-overlay: rgba(28, 28, 26, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-pill: 50px;
            --shadow-card: 0 2px 8px rgba(28, 28, 26, 0.06);
            --shadow-card-hover: 0 6px 16px rgba(28, 28, 26, 0.12);
            --shadow-nav: 0 1px 4px rgba(28, 28, 26, 0.08);
            --font-serif: "Source Han Serif SC", "Noto Serif SC", "STSong", "SimSun", "Songti SC", serif;
            --font-sans: "Source Han Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s ease;
            --spacing-section: 72px;
            --spacing-section-mobile: 52px;
            --container-max: 1200px;
            --nav-height: 72px;
            --nav-height-mobile: 56px;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            font-family: var(--font-serif);
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 640px;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-head .section-subtitle {
            margin-bottom: 0;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-accent);
            background-color: rgba(140, 110, 74, 0.1);
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            border-radius: var(--radius-btn);
            transition: var(--transition-base);
            letter-spacing: 0.5px;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-white);
            border: 2px solid var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: var(--color-white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary:active {
            transform: translateY(0);
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(140, 110, 74, 0.5);
            outline-offset: 2px;
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--color-white);
            border: 2px solid rgba(255, 255, 255, 0.7);
        }
        .btn-secondary:hover {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(255, 255, 255, 0.5);
            outline-offset: 2px;
        }
        .btn-outline-dark {
            background-color: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline-dark:hover {
            background-color: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card);
        }
        .btn-outline-dark:active {
            transform: translateY(0);
        }
        .btn-outline-dark:focus-visible {
            outline: 3px solid rgba(43, 61, 46, 0.35);
            outline-offset: 2px;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 4px 0;
            border-bottom: 1px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }
        .btn-link:hover {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }
        .btn-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        .card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-body h3 {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-secondary);
            background-color: rgba(107, 93, 79, 0.08);
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .divider {
            height: 1px;
            background-color: var(--color-border);
            margin: 0;
            border: none;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background-color: rgba(43, 61, 46, 0.4);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: background-color var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background-color: var(--color-bg);
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--color-border);
        }
        .site-header.scrolled .nav-logo {
            color: var(--color-text);
        }
        .site-header.scrolled .nav-link {
            color: var(--color-text);
        }
        .site-header.scrolled .nav-link:hover {
            color: var(--color-accent);
        }
        .site-header.scrolled .nav-cta .btn {
            background-color: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .site-header .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            letter-spacing: 1px;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .nav-logo:hover {
            color: var(--color-accent);
        }
        .nav-logo:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 4px;
            border-radius: 4px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-white);
            letter-spacing: 0.5px;
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #E8D9C8;
        }
        .nav-link.active {
            color: #E8D9C8;
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--color-accent);
            border-radius: 1px;
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 4px;
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta .btn {
            padding: 10px 22px;
            font-size: 14px;
            background-color: rgba(255, 255, 255, 0.15);
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: var(--color-white);
            border-radius: var(--radius-btn);
        }
        .nav-cta .btn:hover {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-white);
            border-radius: 1px;
            transition: var(--transition-fast);
        }
        .site-header.scrolled .hamburger span {
            background-color: var(--color-text);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height-mobile);
            left: 0;
            right: 0;
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            padding: 16px 24px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            color: var(--color-text);
            padding: 12px 0;
            font-size: 16px;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active {
            color: var(--color-accent);
        }
        .mobile-menu .nav-cta {
            margin-top: 12px;
            flex-direction: column;
        }
        .mobile-menu .nav-cta .btn {
            width: 100%;
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: var(--color-white);
        }
        /* Hero */
        .hero {
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-color: var(--color-overlay);
        }
        .hero .container {
            position: relative;
            z-index: 1;
            padding-top: var(--nav-height);
            padding-bottom: var(--nav-height);
        }
        .hero-content {
            max-width: 680px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 500;
            color: #F5F0E8;
            background-color: rgba(140, 110, 74, 0.7);
            border-radius: var(--radius-pill);
            letter-spacing: 2px;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-family: var(--font-serif);
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-white);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(245, 240, 232, 0.88);
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(245, 240, 232, 0.25);
        }
        .hero-feature-item {
            color: rgba(245, 240, 232, 0.9);
            font-size: 14px;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-feature-item::before {
            content: '';
            width: 6px;
            height: 6px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }
        /* Section: tea room / left image right text */
        .section-tea-room {
            background-color: var(--color-bg);
        }
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .split-grid.image-left .split-image {
            order: 1;
        }
        .split-grid.image-left .split-content {
            order: 2;
        }
        .split-grid.image-right .split-image {
            order: 2;
        }
        .split-grid.image-right .split-content {
            order: 1;
        }
        .split-image img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .split-content h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .split-content p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .split-content ul {
            margin-bottom: 24px;
        }
        .split-content ul li {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            padding-left: 24px;
            position: relative;
            margin-bottom: 8px;
        }
        .split-content ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 50%;
        }
        /* Section: tea masters */
        .section-tea-masters {
            background-color: var(--color-bg-light);
        }
        .masters-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .master-card {
            text-align: center;
        }
        .master-card .card-image {
            aspect-ratio: 1 / 1;
            object-fit: cover;
            border-radius: 50%;
            width: 160px;
            height: 160px;
            margin: 0 auto 16px;
            box-shadow: var(--shadow-card);
            border: 3px solid var(--color-border);
            transition: border-color var(--transition-base);
        }
        .master-card:hover .card-image {
            border-color: var(--color-accent);
        }
        .master-card .card-body {
            padding: 0;
        }
        .master-card h3 {
            font-family: var(--font-serif);
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .master-card .master-title {
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .master-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            -webkit-line-clamp: 2;
            display: -webkit-box;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* Section: guides */
        .section-guides {
            background-color: var(--color-bg);
        }
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        /* Section: events */
        .section-events {
            background-color: var(--color-bg-light);
        }
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .event-card .card-body {
            position: relative;
        }
        .event-date {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .event-location {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        /* Section: tea selection */
        .section-tea-selection {
            background-color: var(--color-bg);
        }
        .tea-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .tea-card .card-image {
            aspect-ratio: 1 / 1;
            object-fit: cover;
        }
        .tea-origin {
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .tea-taste {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 10px;
        }
        /* Section: leisure space */
        .section-leisure {
            background-color: var(--color-bg-light);
        }
        .leisure-full {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .leisure-full img {
            width: 100%;
            aspect-ratio: 21 / 9;
            object-fit: cover;
        }
        .leisure-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 28, 26, 0.75) 0%, rgba(28, 28, 26, 0.2) 100%);
            display: flex;
            align-items: flex-end;
            padding: 40px 48px;
        }
        .leisure-overlay h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }
        .leisure-overlay p {
            font-size: 15px;
            color: rgba(245, 240, 232, 0.85);
            max-width: 480px;
            margin-bottom: 16px;
        }
        .leisure-overlay .btn {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .leisure-overlay .btn:hover {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: var(--color-white);
        }
        /* Section: social circle */
        .section-social {
            background-color: var(--color-bg);
        }
        .social-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: stretch;
        }
        .social-main {
            background-color: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 48px;
            color: var(--color-white);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .social-main h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-white);
        }
        .social-main p {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(245, 240, 232, 0.85);
            margin-bottom: 24px;
        }
        .social-main .btn {
            align-self: flex-start;
            background-color: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--color-white);
        }
        .social-main .btn:hover {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .social-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .social-stat {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            text-align: center;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .social-stat-number {
            font-family: var(--font-serif);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .social-stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        /* Section: reviews */
        .section-reviews {
            background-color: var(--color-bg-light);
        }
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card .card-body {
            padding: 24px 26px;
        }
        .review-stars {
            color: var(--color-accent);
            font-size: 16px;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .review-card blockquote {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            font-style: italic;
            margin-bottom: 16px;
        }
        .review-author {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-secondary);
        }
        .review-scene {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        /* Section: booking form */
        .section-booking {
            background-color: var(--color-bg);
        }
        .booking-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .booking-info h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .booking-info p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .booking-info ul li {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            padding-left: 24px;
            position: relative;
            margin-bottom: 8px;
        }
        .booking-info ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--color-accent);
            font-weight: 700;
        }
        .booking-form-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px 40px;
        }
        .booking-form-card h3 {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 24px;
            color: var(--color-text);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-text);
            background-color: var(--color-bg-light);
            border: 1.5px solid var(--color-border);
            border-radius: 6px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(43, 61, 46, 0.1);
            outline: none;
            background-color: var(--color-white);
        }
        .form-group input::placeholder {
            color: #A8A193;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .btn-submit {
            width: 100%;
            padding: 14px 24px;
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            background-color: var(--color-primary);
            color: var(--color-white);
            border: 2px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: var(--transition-base);
            margin-top: 8px;
        }
        .btn-submit:hover {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-submit:active {
            transform: translateY(0);
        }
        .btn-submit:focus-visible {
            outline: 3px solid rgba(140, 110, 74, 0.5);
            outline-offset: 2px;
        }
        /* Section: tea culture */
        .section-culture {
            background-color: var(--color-bg-light);
        }
        .culture-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-bottom: 48px;
        }
        .culture-step {
            text-align: center;
            padding: 24px 16px;
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .culture-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .culture-step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: var(--color-white);
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .culture-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .culture-step p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .culture-gallery {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .culture-gallery img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base);
        }
        .culture-gallery img:hover {
            box-shadow: var(--shadow-card-hover);
        }
        /* Section: gifts */
        .section-gifts {
            background-color: var(--color-bg);
        }
        .gifts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .gift-card .card-image {
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .gift-price {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-accent);
            margin-top: 8px;
        }
        /* Section: tea etiquette */
        .section-etiquette {
            background-color: var(--color-bg-light);
        }
        .etiquette-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .etiquette-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px 24px;
            background-color: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base);
        }
        .etiquette-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .etiquette-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 50%;
            background-color: rgba(140, 110, 74, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 18px;
            font-weight: 600;
        }
        .etiquette-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .etiquette-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        /* Section: Shanghai narrative */
        .section-shanghai {
            background-color: var(--color-bg);
        }
        .shanghai-full {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .shanghai-full img {
            width: 100%;
            aspect-ratio: 21 / 9;
            object-fit: cover;
        }
        .shanghai-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(28, 28, 26, 0.8) 0%, rgba(28, 28, 26, 0.35) 60%, transparent 100%);
            display: flex;
            align-items: center;
            padding: 48px 56px;
        }
        .shanghai-overlay-content {
            max-width: 520px;
        }
        .shanghai-overlay h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
        }
        .shanghai-overlay p {
            font-size: 15px;
            color: rgba(245, 240, 232, 0.85);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        /* Footer */
        .site-footer {
            background-color: #1C1C1A;
            color: rgba(245, 240, 232, 0.75);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h2 {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 240, 232, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(245, 240, 232, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-col ul li a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(245, 240, 232, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(245, 240, 232, 0.5);
        }
        .footer-bottom .copyright {
            letter-spacing: 0.5px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: rgba(245, 240, 232, 0.1);
            color: rgba(245, 240, 232, 0.7);
            font-size: 14px;
            font-weight: 500;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }
        .footer-social a:hover {
            background-color: var(--color-accent);
            color: var(--color-white);
        }
        /* Responsive breakpoints */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .nav-links {
                gap: 18px;
            }
            .nav-link {
                font-size: 14px;
            }
            .masters-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .tea-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .culture-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .split-grid {
                gap: 32px;
            }
            .social-grid {
                grid-template-columns: 1fr;
            }
            .social-side {
                flex-direction: row;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 52px;
                --spacing-section-mobile: 48px;
                --nav-height: var(--nav-height-mobile);
            }
            body {
                font-size: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 28px;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .site-header {
                height: var(--nav-height-mobile);
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-logo {
                font-size: 17px;
                letter-spacing: 0.5px;
            }
            .hero {
                min-height: 70vh;
            }
            .hero h1 {
                font-size: 26px;
                line-height: 1.35;
            }
            .hero-subtitle {
                font-size: 15px;
                line-height: 1.7;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-features {
                gap: 12px;
                margin-top: 28px;
                padding-top: 16px;
                flex-wrap: wrap;
            }
            .hero-feature-item {
                font-size: 12px;
            }
            .split-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .split-grid.image-left .split-image {
                order: 0;
            }
            .split-grid.image-left .split-content {
                order: 1;
            }
            .split-grid.image-right .split-image {
                order: 0;
            }
            .split-grid.image-right .split-content {
                order: 1;
            }
            .masters-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .guides-grid,
            .events-grid,
            .tea-grid,
            .reviews-grid,
            .gifts-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .culture-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .culture-gallery {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .etiquette-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .booking-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .booking-form-card {
                padding: 28px 24px;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .leisure-overlay,
            .shanghai-overlay {
                padding: 28px 24px;
            }
            .leisure-overlay h2,
            .shanghai-overlay h2 {
                font-size: 22px;
            }
            .social-main {
                padding: 32px 24px;
            }
            .social-side {
                flex-direction: column;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
            .card-body h3 {
                font-size: 18px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .section-title {
                font-size: 20px;
            }
            .split-content h2,
            .social-main h2,
            .booking-info h2,
            .leisure-overlay h2,
            .shanghai-overlay h2 {
                font-size: 20px;
            }
            .master-card .card-image {
                width: 120px;
                height: 120px;
            }
            .social-stat-number {
                font-size: 28px;
            }
            .btn {
                font-size: 13px;
                padding: 10px 16px;
            }
            .review-card blockquote {
                font-size: 14px;
            }
            .booking-form-card {
                padding: 20px 16px;
            }
            .form-group input,
            .form-group select {
                font-size: 14px;
                padding: 10px 14px;
            }
            .btn-submit {
                font-size: 15px;
                padding: 12px 20px;
            }
            .footer-brand h2 {
                font-size: 18px;
            }
            .nav-logo {
                font-size: 15px;
            }
        }

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