:root {
            --primary-blue: #1D3557;
            --primary-red: #E63946;
            --accent-gold: #F4A261;
            --accent-teal: #2A9D8F;
            --bg-main: #F8F9FA;
            --bg-card: #FFFFFF;
            --text-dark: #2B2D42;
            --text-muted: #6C757D;
            --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.02);
            --shadow-md: 0 10px 30px rgba(29, 53, 87, 0.08);
            --shadow-hover: 0 20px 40px rgba(230, 57, 70, 0.15);
            --radius-lg: 24px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Noto Sans SC', sans-serif;
            background: var(--bg-main);
            color: var(--text-dark);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* Bilingual text styling - Chinese large, English small */
        .zh {
            font-size: 1.25em;
            font-weight: 700;
        }

        .en {
            font-size: 0.75em;
            font-weight: 400;
            color: var(--text-muted);
        }

        .section-desc .en {
            font-size: 0.85em;
        }

        -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: 'Noto Serif SC', serif;
            color: var(--primary-blue);
        }

        section {
            padding: 8rem 2rem;
            position: relative;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(230, 57, 70, 0.1);
            color: var(--primary-red);
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 900;
            margin-bottom: 1rem;
            color: var(--primary-blue);
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* Hero */
        .hero {
            min-height: 100vh;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            padding-top: 5rem;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 800px;
            height: 800px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.15) 0%, transparent 70%);
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 1000px;
            padding: 2rem;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 4rem);
            font-weight: 900;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .hero-title-special {
            color: var(--primary-red);
            position: relative;
            display: inline;
        }

        .hero-title-special::after {
            content: '';
            position: absolute;
            bottom: 3px;
            left: 0;
            width: 100%;
            height: 10px;
            background: var(--accent-gold);
            opacity: 0.35;
            z-index: -1;
        }

        .hero-tagline {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--primary-blue);
            letter-spacing: 0.2em;
            margin-bottom: 2rem;
        }

        .hero-philosophy {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 1.5rem;
            color: var(--text-muted);
            line-height: 2;
        }

        .hero-philosophy .zh {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--primary-blue);
            display: inline;
            white-space: nowrap;
        }

        .hero-philosophy .en {
            font-size: 0.95rem;
            color: var(--text-muted);
            display: inline;
            white-space: nowrap;
        }

        .hero-philosophy.small .zh {
            font-size: 1.05rem;
            font-weight: 400;
            color: var(--text-muted);
            margin-top: 1.5rem;
            display: inline;
            white-space: normal;
        }

        .hero-philosophy.small .en {
            font-size: 0.85em;
            color: var(--text-muted);
            display: inline;
            white-space: normal;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }

        @media (max-width: 1024px) {
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.2rem;
            }
        }

        @media (max-width: 600px) {
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        .stat {
            background: white;
            backdrop-filter: blur(10px);
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 1);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
            transition: all 0.4s ease;
            text-decoration: none;
            display: flex;
            flex-direction: column;
            cursor: pointer;
            align-items: center;
            text-align: center;
            min-height: 280px;
            box-sizing: border-box;
        }

        .stat:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .stat-number {
            font-size: 3.8rem;
            font-weight: 900;
            font-family: 'Playfair Display', 'Noto Serif SC', serif;
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1rem;
            color: #333;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }

        .stat-en {
            font-size: 0.85rem;
            color: #8792a2;
            margin-bottom: 0.5rem;
        }

        .stat-sub {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-top: auto;
            padding-top: 1rem;
        }

        .card-footer {
            margin-top: auto;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .stat-tag {
            display: inline-block;
            font-size: 0.8rem;
            color: white;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 600;
            text-align: center;
        }

        .stat-tag-en {
            display: block;
            font-size: 0.7rem;
            margin-top: 0.5rem;
            font-weight: 500;
            min-height: 40px;
            text-align: center;
        }

        /* 四色导航卡片系统 */
        /* 卡片 1：清澜金 (晨间唤醒) */
        .stat:nth-child(1) .stat-number {
            color: #F59E0B;
        }

        .stat:nth-child(1) .stat-tag {
            background: #F59E0B;
        }

        .stat:nth-child(1) .stat-tag-en {
            color: #F59E0B;
        }

        /* 卡片 2：清澜蓝 (科学课堂) */
        .stat:nth-child(2) .stat-number {
            color: #1D3557;
        }

        .stat:nth-child(2) .stat-tag {
            background: #1D3557;
        }

        .stat:nth-child(2) .stat-tag-en {
            color: #1D3557;
        }

        /* 卡片 3：清澜绿 (全能场地) */
        .stat:nth-child(3) .stat-number {
            color: #2A9D8F;
        }

        .stat:nth-child(3) .stat-tag {
            background: #2A9D8F;
        }

        .stat:nth-child(3) .stat-tag-en {
            color: #2A9D8F;
        }

        /* 卡片 4：清澜红 (延时俱乐部) */
        .stat:nth-child(4) .stat-number {
            color: #E63946;
        }

        .stat:nth-child(4) .stat-tag {
            background: #E63946;
        }

        .stat:nth-child(4) .stat-tag-en {
            color: #E63946;
        }

        /* Abilities Section */
        .abilities-section {
            background: white;
        }

        .abilities-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            padding: 0 2rem;
        }

        @media (max-width: 1100px) {
            .abilities-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        @media (max-width: 500px) {
            .abilities-grid {
                grid-template-columns: 1fr;
            }
        }

        .ability-card {
            background: var(--bg-main);
            padding: 2rem 1.5rem;
            border-radius: 20px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .ability-card:hover {
            background: white;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
            border-color: rgba(29, 53, 87, 0.1);
            transform: translateY(-5px);
        }

        .ability-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            transition: transform 0.3s ease;
        }

        .ability-card:hover .ability-icon {
            transform: scale(1.1);
        }

        .ability-card h4 {
            font-size: 1.15rem;
            margin-bottom: 0.8rem;
            color: var(--primary-blue);
        }

        .ability-card p {
            font-size: 0.9rem;
            color: #8792a2;
            line-height: 1.7;
            flex-grow: 1;
        }

        .ability-tag {
            display: inline-block;
            font-size: 0.8rem;
            color: white;
            background: var(--accent-teal);
            padding: 0.4rem 1.2rem;
            border-radius: 20px;
            margin-top: auto;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .ability-card:hover .ability-tag {
            background: #238b7e;
            box-shadow: 0 4px 12px rgba(42, 157, 143, 0.3);
        }

        /* Data Section - Flip Cards */
        .data-section {
            background: var(--bg-main);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        @media (max-width: 1200px) {
            .data-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 900px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 500px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }

        .flip-card {
            perspective: 1000px;
            height: 280px;
            cursor: pointer;
        }

        .flip-card-inner {
            position: relative;
            width: 100%;
            height: 100%;
            transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
            transform-style: preserve-3d;
        }

        .flip-card:hover .flip-card-inner,
        .flip-card.flipped .flip-card-inner {
            transform: rotateY(180deg);
        }

        .flip-card-front,
        .flip-card-back {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            backface-visibility: hidden;
            -webkit-backface-visibility: hidden;
            border-radius: 20px;
            overflow: hidden;
        }

        .flip-card-front {
            background: white;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 2rem 1.5rem;
            text-align: center;
            border-top: 5px solid var(--primary-red);
        }

        .flip-card:nth-child(2) .flip-card-front {
            border-top-color: var(--accent-gold);
        }

        .flip-card:nth-child(3) .flip-card-front {
            border-top-color: var(--accent-teal);
        }

        .flip-card:nth-child(4) .flip-card-front {
            border-top-color: var(--primary-blue);
        }

        .flip-card:nth-child(5) .flip-card-front {
            border-top-color: #9C27B0;
        }

        .flip-card:nth-child(6) .flip-card-front {
            border-top-color: #FF5722;
        }

        .flip-card:nth-child(7) .flip-card-front {
            border-top-color: #607D8B;
        }

        .flip-card-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .flip-card-front h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.8rem;
            font-family: 'Noto Serif SC', serif;
        }

        .flip-card-tags {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }

        .flip-hint {
            font-size: 0.75rem;
            color: var(--accent-teal);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.3rem;
            animation: bounceDown 2s ease-in-out infinite;
        }

        @keyframes bounceDown {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(5px);
            }
        }

        .flip-card-back {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #2a4a7a 100%);
            transform: rotateY(180deg);
            padding: 1.8rem 1.5rem;
            color: white;
            overflow-y: auto;
        }

        .flip-card-back::-webkit-scrollbar {
            width: 4px;
        }

        .flip-card-back::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.3);
            border-radius: 2px;
        }

        .back-header {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-bottom: 1rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }

        .back-header-icon {
            font-size: 1.8rem;
        }

        .back-header h5 {
            font-size: 1rem;
            font-weight: 700;
            color: white;
            font-family: 'Noto Serif SC', serif;
        }

        .back-section {
            margin-bottom: 1rem;
        }

        .back-section:last-child {
            margin-bottom: 0;
        }

        .back-label {
            font-size: 0.7rem;
            font-weight: 700;
            color: var(--accent-gold);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 0.4rem;
        }

        .back-content {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
        }

        .back-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.15);
            margin: 0.8rem 0;
        }

        /* BMI Analyzer Section */
        .bmi-analyzer {
            margin-top: 3rem;
            background: rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 24px;
            padding: 2.5rem;
            border: 1px solid rgba(255, 255, 255, 0.8);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        }

        .bmi-analyzer-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-blue);
            text-align: center;
            margin-bottom: 2rem;
            font-family: 'Noto Serif SC', serif;
        }

        .bmi-analyzer-title span {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .bmi-controls {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        @media (max-width: 768px) {
            .bmi-controls {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        .bmi-control-group label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.8rem;
            font-weight: 600;
        }

        .bmi-slider {
            -webkit-appearance: none;
            appearance: none;
            width: 100%;
            height: 8px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--accent-teal) 0%, var(--primary-blue) 100%);
            outline: none;
            cursor: pointer;
        }

        .bmi-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
            cursor: grab;
            transition: transform 0.2s;
        }

        .bmi-slider::-webkit-slider-thumb:hover {
            transform: scale(1.15);
        }

        .bmi-slider::-webkit-slider-thumb:active {
            cursor: grabbing;
            transform: scale(1.1);
        }

        .bmi-slider::-moz-range-thumb {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
            cursor: grab;
            border: none;
        }

        .bmi-value-display {
            text-align: center;
            margin-top: 0.8rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-blue);
        }

        .bmi-value-display span {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .bmi-result-area {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 2.5rem;
            align-items: start;
        }

        @media (max-width: 900px) {
            .bmi-result-area {
                grid-template-columns: 1fr;
            }
        }

        /* BMI Gauge */
        .bmi-gauge-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .bmi-gauge {
            position: relative;
            width: 220px;
            height: 130px;
            overflow: hidden;
        }

        .bmi-gauge-bg {
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: conic-gradient(from 180deg,
                    #F4A261 0deg 60deg,
                    #2A9D8F 60deg 120deg,
                    #E63946 120deg 180deg);
            transform: rotate(180deg);
        }

        .bmi-gauge-inner {
            position: absolute;
            top: 15px;
            left: 15px;
            right: 15px;
            bottom: 15px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .bmi-gauge-value {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-blue);
            line-height: 1;
        }

        .bmi-gauge-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        .bmi-gauge-needle {
            position: absolute;
            bottom: 10px;
            left: 50%;
            width: 4px;
            height: 85px;
            background: linear-gradient(to top, var(--primary-blue), transparent);
            transform-origin: bottom center;
            transform: translateX(-50%) rotate(0deg);
            transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
            border-radius: 2px;
        }

        .bmi-gauge-center {
            position: absolute;
            bottom: 5px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 16px;
            background: var(--primary-blue);
            border-radius: 50%;
            z-index: 2;
        }

        .bmi-zone-labels {
            display: flex;
            justify-content: space-between;
            width: 100%;
            margin-top: 0.8rem;
            font-size: 0.7rem;
        }

        .bmi-zone-label {
            text-align: center;
        }

        .bmi-zone-label:nth-child(1) {
            color: #F4A261;
        }

        .bmi-zone-label:nth-child(2) {
            color: #2A9D8F;
        }

        .bmi-zone-label:nth-child(3) {
            color: #E63946;
        }

        /* BMI Analysis Content */
        .bmi-analysis {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .bmi-analysis-header {
            padding: 1rem 1.5rem;
            border-radius: 16px;
            color: white;
            text-align: center;
            transition: all 0.5s ease;
        }

        .bmi-analysis-header.underweight {
            background: linear-gradient(135deg, #F4A261, #e08a3c);
        }

        .bmi-analysis-header.healthy {
            background: linear-gradient(135deg, #2A9D8F, #1f7a6d);
        }

        .bmi-analysis-header.overweight {
            background: linear-gradient(135deg, #E63946, #c42d3a);
        }

        .bmi-analysis-header h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
            font-family: 'Noto Serif SC', serif;
        }

        .bmi-analysis-header p {
            font-size: 0.85rem;
            opacity: 0.9;
        }

        .bmi-analysis-body {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            padding: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.8);
        }

        .bmi-analysis-body h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .bmi-analysis-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Milestone Cards */
        .milestone-section {
            margin-top: 2.5rem;
        }

        .milestone-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            text-align: center;
            font-family: 'Noto Serif SC', serif;
        }

        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        @media (max-width: 900px) {
            .milestone-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 500px) {
            .milestone-grid {
                grid-template-columns: 1fr;
            }
        }

        .milestone-card {
            background: rgba(255, 255, 255, 0.5);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            padding: 1.2rem;
            border: 2px solid transparent;
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            opacity: 0.5;
            transform: scale(0.95);
        }

        .milestone-card.active {
            opacity: 1;
            transform: scale(1);
            border-color: var(--accent-teal);
            box-shadow: 0 0 20px rgba(42, 157, 143, 0.3);
        }

        .milestone-card-header {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        }

        .milestone-age {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-teal);
        }

        .milestone-stage {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .milestone-item {
            margin-bottom: 0.6rem;
        }

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

        .milestone-item-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-bottom: 0.2rem;
        }

        .milestone-item-content {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .milestone-item-norm {
            display: inline-block;
            background: var(--accent-gold);
            color: white;
            font-size: 0.65rem;
            padding: 0.15rem 0.5rem;
            border-radius: 20px;
            margin-top: 0.3rem;
            font-weight: 600;
        }

        .bmi-footer-note {
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
        }

        /* Morning Section */
        .morning-section {
            background: white;
        }

        .morning-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        @media (max-width: 968px) {
            .morning-grid {
                grid-template-columns: 1fr;
            }
        }

        .morning-visual {
            position: relative;
        }

        .obstacle-course {
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
            border-radius: 24px;
            padding: 3rem;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .obstacle-course::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
        }

        .obstacle-title {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: white;
        }

        .obstacle-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
        }

        @media (max-width: 600px) {
            .obstacle-cards {
                grid-template-columns: 1fr;
            }
        }

        .obstacle-card {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .obstacle-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            background: rgba(255, 255, 255, 0.18);
        }

        .obstacle-card .obstacle-icon {
            font-size: 1.8rem;
            flex-shrink: 0;
        }

        .obstacle-card div {
            display: flex;
            flex-direction: column;
        }

        .obstacle-card .zh {
            font-size: 1rem;
            font-weight: 600;
            color: white;
        }

        .obstacle-card .en {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }

        .obstacle-list {
            list-style: none;
        }

        .obstacle-list li {
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 1.05rem;
        }

        .obstacle-list li:last-child {
            border-bottom: none;
        }

        .obstacle-icon {
            font-size: 1.5rem;
        }

        .morning-content h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .morning-content p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        .science-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 1.5rem;
        }

        .pill {
            display: inline-flex;
            flex-direction: column;
            align-items: flex-start;
            padding: 0.6rem 1rem;
            background: rgba(42, 157, 143, 0.12);
            border: 1px solid rgba(42, 157, 143, 0.25);
            border-radius: 10px;
            transition: all 0.3s ease;
        }

        .pill:hover {
            background: rgba(42, 157, 143, 0.2);
            transform: translateY(-2px);
        }

        .pill .zh {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-teal);
        }

        .pill .en {
            font-size: 0.65rem;
            color: var(--accent-teal);
            opacity: 0.7;
            margin-top: 2px;
        }

        /* ─── Morning Parkour ─────────────────────────────────────────────────────── */
        .parkour-featured {
            margin: 3rem 0;
            background: linear-gradient(135deg, #FFF9F0 0%, #FFF0E6 100%);
            border: 2px solid #F4A261;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(244, 162, 97, 0.15);
        }

        .parkour-featured-header {
            background: #F4A261;
            padding: 0.6rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .parkour-featured-header span {
            font-size: 0.85rem;
            font-weight: 700;
            color: white;
            letter-spacing: 0.05em;
        }

        .parkour-featured-body {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .parkour-featured-image {
            position: relative;
            overflow: hidden;
            min-height: 300px;
        }

        .parkour-featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .parkour-featured-info {
            padding: 1.75rem 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 0.5rem;
        }

        .parkour-track-name {
            font-size: 1.5rem;
            font-weight: 800;
            color: #E63946;
            margin-bottom: 0.25rem;
        }

        .parkour-class-teacher {
            font-size: 0.95rem;
            color: #1D3557;
            font-weight: 600;
        }

        .parkour-week-badge {
            display: inline-block;
            background: #1D3557;
            color: white;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .parkour-safety-alert {
            margin-top: 0.75rem;
            background: #FEF3C7;
            border-left: 4px solid #F59E0B;
            border-radius: 0 10px 10px 0;
            padding: 0.75rem 1rem;
        }

        .parkour-safety-title {
            font-size: 0.8rem;
            font-weight: 800;
            color: #B45309;
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .parkour-safety-notes {
            font-size: 0.82rem;
            color: #78350F;
            white-space: pre-wrap;
            word-break: break-word;
            line-height: 1.6;
        }

        .parkour-safety-notes .warn {
            color: #DC2626;
            font-weight: 700;
        }

        .parkour-safety-notes .ok {
            color: #15803D;
            font-weight: 700;
        }

        /* Parkour Schedule Table */
        .parkour-schedule {
            margin: 2.5rem 0;
        }

        .parkour-schedule-title {
            font-size: 1.2rem;
            font-weight: 800;
            color: #1D3557;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .parkour-table-wrap {
            overflow-x: auto;
            border-radius: 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            background: white;
        }

        .parkour-schedule table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
        }

        .parkour-schedule thead tr {
            background: #1D3557;
            color: white;
        }

        .parkour-schedule th {
            padding: 0.75rem 1rem;
            text-align: left;
            font-weight: 600;
            font-size: 0.8rem;
            white-space: nowrap;
        }

        .parkour-schedule tbody tr {
            border-bottom: 1px solid #F1F5F9;
            transition: background 0.15s;
        }

        .parkour-schedule tbody tr:hover {
            background: #F8FAFC;
        }

        .parkour-schedule td {
            padding: 0.7rem 1rem;
            vertical-align: middle;
        }

        .parkour-schedule .pk-week {
            white-space: nowrap;
        }

        .parkour-schedule .pk-week span {
            background: #1D3557;
            color: white;
            padding: 2px 8px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .parkour-schedule .pk-class {
            font-weight: 700;
            color: #1D3557;
            font-size: 0.9rem;
        }

        .parkour-schedule .pk-teacher {
            font-size: 0.78rem;
            color: #64748B;
        }

        .parkour-schedule .pk-track {
            font-weight: 700;
            color: #E63946;
        }

        .parkour-schedule .pk-safety {
            font-size: 0.75rem;
            color: #B45309;
            max-width: 260px;
            white-space: pre-wrap;
            word-break: break-word;
        }

        .map-thumbnail {
            width: 80px;
            height: 54px;
            object-fit: cover;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            cursor: pointer;
            display: block;
            margin: 0 auto;
        }

        .map-thumbnail:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 16px rgba(0,0,0,0.12);
        }

        .map-thumbnail-placeholder {
            width: 80px;
            height: 54px;
            margin: 0 auto;
            background: #F1F5F9;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #94A3B8;
            font-size: 0.65rem;
            font-weight: 500;
            line-height: 1.3;
        }

        .map-placeholder-sub {
            font-size: 0.55rem;
            color: #CBD5E1;
        }

        /* Parkour Video Tutorial Cards */
        .pk-video-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            cursor: pointer;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            border: 1px solid #F1F5F9;
        }

        .pk-video-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(29, 53, 87, 0.12);
        }

        .pk-video-thumb {
            position: relative;
            height: 160px;
            overflow: hidden;
            background: #1D3557;
        }

        .pk-video-thumb video {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .pk-video-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(29, 53, 87, 0.35);
            font-size: 2.5rem;
            color: white;
            opacity: 0.8;
            transition: opacity 0.2s;
        }

        .pk-video-card:hover .pk-video-overlay {
            opacity: 1;
        }

        .pk-video-info {
            padding: 0.85rem 1rem;
        }

        .pk-video-title {
            font-weight: 700;
            font-size: 0.9rem;
            color: #1D3557;
            margin-bottom: 0.25rem;
        }

        .pk-video-desc {
            font-size: 0.75rem;
            color: #64748B;
            line-height: 1.5;
        }

        /* Parkour Lightbox */
        .pk-lightbox {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.88);
            z-index: 10000;
            align-items: center;
            justify-content: center;
            padding: 2rem;
        }

        .pk-lightbox.open {
            display: flex;
        }

        .pk-lightbox.zoomed {
            overflow: auto;
        }

        .pk-lightbox-img {
            max-width: 90vw;
            max-height: 85vh;
            object-fit: contain;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            cursor: zoom-in;
            transition: transform 0.3s ease, max-width 0.3s ease, max-height 0.3s ease;
        }

        .pk-lightbox-img.zoomed {
            max-width: none;
            max-height: none;
            cursor: zoom-out;
        }

        .pk-lightbox-close {
            position: fixed;
            top: 1.5rem;
            right: 2rem;
            background: rgba(255, 255, 255, 0.15);
            border: none;
            color: white;
            font-size: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            cursor: pointer;
            line-height: 1;
            transition: background 0.2s;
        }

        .pk-lightbox-close:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .pk-lightbox-caption {
            position: fixed;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 0.6rem 1.5rem;
            border-radius: 30px;
            font-size: 0.85rem;
            text-align: center;
            max-width: 80vw;
        }

        /* Sunshine Section */
        .sunshine-section {
            background: var(--bg-main);
        }

        .sun-tracker {
            background: white;
            border-radius: 24px;
            padding: 2.5rem;
            margin-bottom: 3rem;
            box-shadow: var(--shadow-md);
            text-align: center;
        }

        .sun-tracker-title {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            color: var(--primary-blue);
        }

        .sun-slots {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .sun-slot {
            background: var(--bg-main);
            border: 2px solid transparent;
            padding: 1.2rem 2rem;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
            color: var(--text-muted);
            min-width: 160px;
        }

        .sun-slot:hover,
        .sun-slot.active {
            border-color: var(--accent-gold);
            color: var(--primary-blue);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .sun-slot-time {
            display: block;
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--primary-red);
            margin-bottom: 0.3rem;
            font-family: 'Noto Serif SC', serif;
        }

        .sun-slot-class {
            font-size: 0.85rem;
        }

        .sunshine-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        @media (max-width: 968px) {
            .sunshine-grid {
                grid-template-columns: 1fr;
            }
        }

        .sunshine-card {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .sunshine-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .sunshine-card-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .sunshine-icon {
            font-size: 2.5rem;
        }

        .sunshine-card-header h4 {
            font-size: 1.2rem;
            color: var(--primary-blue);
        }

        .sunshine-card-header span {
            display: block;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .sunshine-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .time-block {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.8rem;
            background: var(--bg-main);
            border-radius: 12px;
            margin-bottom: 0.8rem;
        }

        .time-badge {
            background: var(--accent-gold);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* ─── Venue Empowerment V6 ─────────────────────────────────────────────── */

        .sunshine-section {
            background: linear-gradient(180deg, #F0F4FF 0%, #FFFFFF 100%);
        }

        /* Venue Tabs */
        .venue-showcase {
            margin-bottom: 3.5rem;
        }

        .venue-tabs {
            display: flex;
            gap: 0.75rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .venue-tab {
            flex: 1;
            min-width: 160px;
            padding: 1rem 1.5rem;
            border-radius: 16px;
            border: 2px solid #E2E8F0;
            background: white;
            cursor: pointer;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.3s;
            text-align: center;
            line-height: 1.4;
        }

        .venue-tab:hover {
            border-color: var(--accent-gold);
            transform: translateY(-2px);
        }

        .venue-tab.active {
            background: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
            box-shadow: 0 4px 12px rgba(29, 53, 87, 0.25);
        }

        /* Venue Hero Card */
        .venue-hero-card {
            background: white;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 10px 40px rgba(29, 53, 87, 0.1);
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            min-height: 480px;
        }

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

        .venue-hero-image {
            position: relative;
            background: #E2E8F0;
            overflow: hidden;
            min-height: 300px;
        }

        .venue-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .venue-image-placeholder {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #94A3B8;
            background: linear-gradient(135deg, #E2E8F0, #CBD5E1);
        }

        .venue-hero-content {
            padding: 2.5rem;
            overflow-y: auto;
            max-height: 600px;
        }

        .venue-title-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 0.5rem;
        }

        .venue-title-row h3 {
            font-size: 1.6rem;
            color: var(--primary-blue);
            margin: 0;
        }

        .venue-badge {
            background: rgba(29, 53, 87, 0.08);
            color: var(--primary-blue);
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .venue-section {
            margin-top: 1.5rem;
        }

        .venue-section-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .venue-purpose-text {
            font-size: 0.95rem;
            color: var(--text-dark);
            line-height: 1.8;
            background: #F8F9FA;
            padding: 1rem 1.25rem;
            border-radius: 12px;
            border-left: 4px solid var(--accent-gold);
        }

        .venue-two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-top: 1.5rem;
        }

        @media (max-width: 600px) {
            .venue-two-col {
                grid-template-columns: 1fr;
            }
        }

        .venue-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .venue-list li {
            font-size: 0.88rem;
            color: var(--text-dark);
            padding: 0.4rem 0;
            padding-left: 1.2rem;
            position: relative;
            line-height: 1.5;
        }

        .venue-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--accent-gold);
            font-weight: 900;
        }

        .venue-safety-list li::before {
            color: var(--primary-red);
        }

        .venue-lesson-plan {
            margin-top: 1.5rem;
        }

        .lesson-plan-box {
            background: linear-gradient(135deg, #EFF6FF, #F0F9FF);
            border-radius: 16px;
            padding: 1.25rem 1.5rem;
            font-size: 0.9rem;
            color: var(--text-dark);
            line-height: 1.9;
            white-space: pre-wrap;
            border: 1px solid #BFDBFE;
        }

        /* Auxiliary Venues Grid — Netflix Pop-out Style */
        .aux-venues-section {
            margin-top: 3rem;
        }

        .aux-title {
            font-size: 1.2rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            font-weight: 700;
        }

        .aux-venues-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        @media (max-width: 900px) {
            .aux-venues-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 600px) {
            .aux-venues-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ── Dual-layer pop-out card ── */
        .aux-card-wrapper {
            position: relative;
            height: 220px;
            z-index: 1;
        }

        .aux-card-inner {
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            display: flex;
            flex-direction: column;
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            z-index: 1;
        }

        .aux-img-box {
            width: 100%;
            height: 100%;
            flex-shrink: 0;
            transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            overflow: hidden;
        }

        .aux-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }

        .aux-text-panel {
            display: none;
            flex-direction: column;
            justify-content: center;
            padding: 1.25rem 1.5rem;
            opacity: 0;
            background: linear-gradient(135deg, #ffffff, #f8f9fa);
            transition: opacity 0.3s 0.15s;
            overflow: hidden;
        }

        .aux-text-panel h4 {
            margin: 0 0 0.6rem 0;
            color: var(--primary-blue);
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.3;
        }

        .aux-desc {
            font-size: 0.82rem;
            color: #475569;
            margin-bottom: 0.75rem;
            line-height: 1.6;
            flex: 1;
        }

        .aux-safety {
            font-size: 0.75rem;
            color: #E63946;
            background: rgba(230, 57, 70, 0.07);
            padding: 0.5rem 0.7rem;
            border-radius: 6px;
            line-height: 1.5;
            border-left: 3px solid #E63946;
        }

        /* ── Netflix Hover Pop-out (desktop) ── */
        @media (hover: hover) {
            .aux-card-wrapper:hover {
                z-index: 50;
            }
            .aux-card-wrapper:hover .aux-card-inner {
                flex-direction: row;
                width: 220%;
                height: 300px;
                top: -40px;
                left: -10px;
                box-shadow: 0 24px 48px rgba(0,0,0,0.18);
            }
            .aux-card-wrapper:hover .aux-img-box {
                width: 42%;
                height: 100%;
            }
            .aux-card-wrapper:hover .aux-img-box img {
                transform: scale(1.05);
            }
            .aux-card-wrapper:hover .aux-text-panel {
                display: flex;
                width: 58%;
                opacity: 1;
            }
        }

        /* ── Mobile touch/click expansion ── */
        .aux-card-wrapper.expanded .aux-card-inner {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 90vw;
            max-width: 600px;
            height: auto;
            max-height: 80vh;
            flex-direction: column;
            z-index: 9999;
            box-shadow: 0 32px 64px rgba(0,0,0,0.25);
            overflow-y: auto;
        }
        .aux-card-wrapper.expanded .aux-img-box {
            width: 100%;
            height: 220px;
        }
        .aux-card-wrapper.expanded .aux-text-panel {
            display: flex;
            opacity: 1;
            position: relative;
        }
        .aux-card-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.4);
            z-index: 9998;
        }
        .aux-card-wrapper.expanded ~ .aux-card-overlay,
        .aux-card-wrapper.expanded + .aux-card-overlay {
            display: block;
        }

        /* Order & Routine Banner */
        .order-banner {
            margin-top: 3.5rem;
            background: linear-gradient(135deg, #1D3557, #264653);
            border-radius: 20px;
            padding: 2.5rem;
            color: white;
            display: flex;
            gap: 2rem;
            align-items: flex-start;
        }

        @media (max-width: 768px) {
            .order-banner {
                flex-direction: column;
                gap: 1.5rem;
            }
        }

        .order-banner-icon {
            font-size: 3.5rem;
            flex-shrink: 0;
        }

        .order-banner-content {
            flex: 1;
        }

        .order-banner-content h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.25rem;
        }

        .order-rules {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        @media (max-width: 600px) {
            .order-rules {
                grid-template-columns: 1fr;
            }
        }

        .order-rule-item {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 1.25rem;
            border-left: 4px solid #F4A261;
        }

        .order-rule-item strong {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 1rem;
        }

        .order-rule-item p {
            font-size: 0.88rem;
            margin: 0;
            opacity: 0.9;
            line-height: 1.7;
        }

        /* Venue Portal Card (center card in Layer 2 grid) */
        .venue-portal-card {
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid transparent;
        }

        .venue-portal-card:hover {
            border-color: var(--primary-blue);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(29, 53, 87, 0.15);
        }

        .venue-portal-preview {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            margin-top: 0.75rem;
        }

        .venue-portal-item {
            background: #EFF6FF;
            border-radius: 10px;
            padding: 0.6rem 0.9rem;
            font-size: 0.88rem;
            color: #1D3557;
            font-weight: 600;
            transition: background 0.2s;
        }

        .venue-portal-card:hover .venue-portal-item {
            background: #DBEAFE;
        }

        /* ─── / Venue Empowerment V6 ───────────────────────────────────────────── */

        .tyndall-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 9999;
            background: radial-gradient(circle at top, rgba(244, 162, 97, 0.2) 0%, transparent 60%);
            opacity: 0;
            transition: opacity 0.5s;
        }

        .tyndall-overlay.active {
            opacity: 1;
        }

        /* Clubs Section */
        .clubs-section {
            background: white;
        }

        .age-filters {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 3rem;
            flex-wrap: wrap;
        }

        .age-btn {
            background: white;
            border: 2px solid #E2E8F0;
            color: var(--text-muted);
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .age-btn:hover,
        .age-btn.active {
            background: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
            box-shadow: var(--shadow-md);
        }

        .club-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 2rem;
        }

        .club-card {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid #E2E8F0;
            transition: all 0.3s;
            text-align: center;
        }

        .club-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-red);
        }

        .club-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .club-card h4 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
            color: var(--primary-blue);
        }

        .club-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }

        .club-card .en {
            display: block;
            font-size: 0.8rem;
            color: var(--accent-teal);
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .club-teacher {
            display: inline-block;
            background: rgba(29, 53, 87, 0.08);
            color: var(--primary-blue);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            margin-bottom: 1rem;
        }

        .club-btn {
            background: rgba(230, 57, 70, 0.1);
            color: var(--primary-red);
            border: none;
            padding: 0.6rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            width: 100%;
        }

        .club-btn:hover {
            background: var(--primary-red);
            color: white;
        }

        /* Curriculum Section */
        .curriculum-section {
            background: var(--bg-main);
        }

        .tab-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }

        .tab-btn {
            background: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 16px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .tab-btn:hover,
        .tab-btn.active {
            background: var(--primary-blue);
            color: white;
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .table-wrapper {
            background: white;
            border-radius: 24px;
            padding: 2.5rem;
            box-shadow: var(--shadow-md);
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            min-width: 700px;
        }

        th {
            background: #F8FAFC;
            color: var(--primary-blue);
            font-weight: 700;
            padding: 1.8rem 1.5rem;
            text-align: left;
            font-family: 'Noto Serif SC', serif;
            border-bottom: 2px solid #E2E8F0;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }

        td {
            padding: 2.4rem 1.8rem;
            border-bottom: 1px solid #F1F5F9;
            font-size: 0.9rem;
            color: var(--text-dark);
            vertical-align: top;
            line-height: 1.5;
            white-space: pre-wrap;
            word-break: break-word;
        }

        tr:hover td {
            background: rgba(29, 53, 87, 0.03);
        }

        .semester-row td {
            background: rgba(29, 53, 87, 0.06);
            font-weight: 700;
            color: var(--primary-blue);
            text-align: center;
            font-size: 1.05rem;
            padding: 1.5rem;
            vertical-align: middle;
        }

        .holiday-row td {
            background: rgba(244, 162, 97, 0.08);
            color: #B45309;
            text-align: center;
            font-style: italic;
            padding: 1.2rem;
            vertical-align: middle;
        }

        .tag-unit {
            background: rgba(230, 57, 70, 0.1);
            color: var(--primary-red);
            padding: 5px 12px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-block;
        }

        .en-sub {
            display: block;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
            font-weight: normal;
        }

        .week-badge {
            background: var(--primary-blue);
            color: white;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            white-space: nowrap;
        }

        /* Subunit rich content */
        .subunit-content {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .subunit-content .subunit-line {
            display: block;
        }

        .subunit-content .subunit-title {
            font-weight: 700;
            color: var(--primary-blue);
            font-size: 0.88rem;
            line-height: 1.4;
        }

        .subunit-content .subunit-title::before {
            content: '▸ ';
            color: var(--accent-teal);
            font-weight: 900;
        }

        .subunit-content .subunit-desc {
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.5;
            padding-left: 1rem;
        }

        .subunit-simple {
            white-space: pre-wrap;
            word-break: break-word;
            line-height: 1.6;
            font-weight: 600;
            color: var(--primary-blue);
            font-size: 0.88rem;
        }

        /* Programs Section */
        .programs-section {
            background: white;
        }

        .programs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        @media (max-width: 968px) {
            .programs-grid {
                grid-template-columns: 1fr;
            }
        }

        .program-card {
            background: var(--bg-main);
            border-radius: 24px;
            padding: 2.5rem;
            text-align: center;
            transition: all 0.3s;
            border: 1px solid transparent;
        }

        .program-card:hover {
            background: white;
            box-shadow: var(--shadow-md);
            border-color: var(--primary-red);
            transform: translateY(-5px);
        }

        .program-icon {
            font-size: 4rem;
            margin-bottom: 1.5rem;
        }

        .program-card h4 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: var(--primary-blue);
        }

        .program-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .program-en {
            display: block;
            font-size: 0.85rem;
            color: var(--accent-teal);
            margin-top: 0.5rem;
            font-weight: 600;
        }

        /* Gallery Section */
        .gallery-section {
            background: var(--bg-main);
        }

        .photo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .photo-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
            cursor: pointer;
        }

        .photo-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
            cursor: pointer;
        }

        .photo-card:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-md);
        }

        .photo-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 16px 16px 0 0;
            display: block;
        }

        /* Olympic gallery: video + image uniform coverage */
        .photo-grid .photo-card {
            position: relative;
            overflow: hidden;
        }

        .photo-grid .photo-card video,
        .photo-grid .photo-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 16px 16px 0 0;
            display: block;
            transition: transform 0.3s;
        }

        .photo-grid .photo-card:hover video,
        .photo-grid .photo-card:hover img {
            transform: scale(1.05);
        }

        .photo-info {
            padding: 1.2rem;
        }

        .photo-info h4 {
            font-size: 1rem;
            margin-bottom: 0.3rem;
            color: var(--primary-blue);
        }

        .photo-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Video play indicator overlay */
        .video-indicator {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 200px;
            border-radius: 16px 16px 0 0;
            pointer-events: none;
        }

        .video-indicator::before {
            content: '▶';
            font-size: 3rem;
            color: rgba(255, 255, 255, 0.9);
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }

        .photo-card:hover .video-indicator::before {
            color: white;
        }

        /* Footer */
        footer {
            background: var(--primary-blue);
            color: white;
            padding: 5rem 2rem;
            text-align: center;
        }

        footer h2 {
            color: white;
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        footer p {
            opacity: 0.85;
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }

        .cta-btn {
            background: var(--primary-red);
            color: white;
            padding: 1rem 3rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s;
        }

        .cta-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 30px rgba(230, 57, 70, 0.4);
        }

        /* Animations */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Lightbox */
        .lightbox {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 10000;
            display: none;
            align-items: center;
            justify-content: center;
        }

        .lightbox.active {
            display: flex;
        }

        .lightbox img {
            max-width: 90%;
            max-height: 90%;
            border-radius: 16px;
        }

        .lightbox video {
            max-width: 90%;
            max-height: 90%;
            border-radius: 16px;
        }

        .lightbox-close {
            position: absolute;
            top: 20px;
            right: 30px;
            font-size: 3rem;
            color: white;
            cursor: pointer;
        }

        /* ===== RADAR CONSOLE SECTION ===== */
        .radar-console-section {
            background: linear-gradient(180deg, var(--bg-main) 0%, #f0f4f8 100%);
            padding: 4rem 0 5rem;
            margin-top: 3rem;
        }

        .radar-console-section .section-header {
            max-width: 900px;
            margin: 0 auto 3rem;
        }

        .radar-console {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 280px 1fr 320px;
            gap: 2rem;
            align-items: start;
        }

        @media (max-width: 1100px) {
            .radar-console {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        /* Left: Control Panel */
        .control-panel {
            background: white;
            border-radius: 24px;
            padding: 2rem 1.5rem;
            box-shadow: 0 8px 32px rgba(29, 53, 87, 0.08);
            border: 1px solid rgba(29, 53, 87, 0.06);
        }

        .control-panel-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 2rem;
            text-align: center;
            padding-bottom: 1rem;
            border-bottom: 2px solid var(--accent-teal);
        }

        .control-group {
            margin-bottom: 2rem;
        }

        .control-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .control-label .zh {
            color: var(--primary-blue);
            font-size: 0.85rem;
            text-transform: none;
            letter-spacing: 0;
        }

        /* Age Slider */
        .age-slider-container {
            position: relative;
        }

        .age-value-display {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary-blue);
            font-family: 'Playfair Display', serif;
            margin-bottom: 0.5rem;
            line-height: 1;
        }

        .age-value-display span {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--text-muted);
            font-family: 'Noto Sans SC', sans-serif;
        }

        .age-slider {
            -webkit-appearance: none;
            width: 100%;
            height: 8px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--accent-teal) 0%, var(--primary-blue) 100%);
            outline: none;
            margin: 1rem 0;
        }

        .age-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: white;
            border: 3px solid var(--primary-blue);
            box-shadow: 0 2px 8px rgba(29, 53, 87, 0.3);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .age-slider::-webkit-slider-thumb:hover {
            transform: scale(1.15);
            box-shadow: 0 4px 12px rgba(29, 53, 87, 0.4);
        }

        .age-ticks {
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }

        /* Semester Toggle */
        .semester-toggle {
            display: flex;
            background: #f0f4f8;
            border-radius: 16px;
            padding: 4px;
            gap: 4px;
        }

        .semester-btn {
            flex: 1;
            padding: 0.7rem 0.5rem;
            border: none;
            background: transparent;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }

        .semester-btn.active {
            background: white;
            color: var(--primary-blue);
            box-shadow: 0 2px 8px rgba(29, 53, 87, 0.15);
        }

        .semester-btn .zh {
            display: block;
            font-size: 0.82rem;
        }

        .semester-btn .en {
            display: block;
            font-size: 0.65rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .semester-btn.active .en {
            color: var(--accent-teal);
        }

        /* Delta Indicator */
        .delta-indicator {
            margin-top: 1.5rem;
            padding: 1.2rem;
            background: linear-gradient(135deg, rgba(42, 157, 143, 0.08) 0%, rgba(29, 53, 87, 0.08) 100%);
            border-radius: 16px;
            text-align: center;
            border: 1px dashed rgba(42, 157, 143, 0.3);
        }

        .delta-label {
            font-size: 0.7rem;
            color: var(--accent-teal);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 0.5rem;
        }

        .delta-value {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--primary-blue);
            font-family: 'Playfair Display', serif;
        }

        .delta-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* Center: Radar Chart */
        .radar-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        #radarChart {
            width: 100%;
            max-width: 600px;
            height: 600px;
        }

        /* Right: Data Station */
        .data-station {
            background: white;
            border-radius: 24px;
            padding: 1.5rem;
            box-shadow: 0 8px 32px rgba(29, 53, 87, 0.08);
            border: 1px solid rgba(29, 53, 87, 0.06);
            max-height: 620px;
            overflow-y: auto;
        }

        .data-station::-webkit-scrollbar {
            width: 4px;
        }

        .data-station::-webkit-scrollbar-thumb {
            background: rgba(29, 53, 87, 0.2);
            border-radius: 2px;
        }

        .station-header {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 2px solid var(--accent-gold);
        }

        .station-nav-btn {
            width: 36px;
            height: 36px;
            border: 2px solid var(--primary-blue);
            background: white;
            border-radius: 50%;
            font-size: 1.4rem;
            color: var(--primary-blue);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
            flex-shrink: 0;
            line-height: 1;
            padding: 0;
        }

        .station-nav-btn:hover {
            background: var(--primary-blue);
            color: white;
            transform: scale(1.1);
        }

        .station-icon {
            font-size: 2.2rem;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-teal) 100%);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .station-title {
            flex: 1;
            min-width: 0;
        }

        .station-title h4 {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.1rem;
            color: var(--primary-blue);
            margin-bottom: 0.3rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .station-title .en {
            font-size: 0.7rem;
            color: var(--text-muted);
            font-style: italic;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .station-section {
            margin-bottom: 1.2rem;
        }

        .station-section-label {
            font-size: 0.65rem;
            font-weight: 700;
            color: var(--accent-teal);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 0.5rem;
        }

        .station-section-content {
            font-size: 0.85rem;
            color: #444;
            line-height: 1.7;
        }

        .station-norms {
            background: linear-gradient(135deg, rgba(29, 53, 87, 0.04) 0%, rgba(42, 157, 143, 0.04) 100%);
            border-radius: 12px;
            padding: 1rem;
            margin-top: 0.8rem;
        }

        .norm-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.4rem 0;
            border-bottom: 1px dashed rgba(29, 53, 87, 0.1);
        }

        .norm-row:last-child {
            border-bottom: none;
        }

        .norm-age {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .norm-value {
            font-size: 0.9rem;
            color: var(--primary-blue);
            font-weight: 700;
        }

        .norm-value.highlight {
            color: var(--accent-teal);
        }

        .station-footer {
            margin-top: 1.5rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(29, 53, 87, 0.1);
            font-size: 0.7rem;
            color: #999;
            text-align: center;
            line-height: 1.5;
            font-style: italic;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .radar-console {
                padding: 0 1rem;
            }

            #radarChart {
                height: 400px;
            }

            .control-panel,
            .data-station {
                padding: 1.5rem 1rem;
            }
        }

        /* Header — Unified Glassmorphism sticky */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 9999;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: all 0.3s ease;
        }

        .header-container {
            width: 100%;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0.8rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-sizing: border-box;
        }

        .logo-link {
            display: flex;
            align-items: center;
            text-decoration: none;
        }

        .site-logo {
            height: 52px;
            width: auto;
            object-fit: contain;
            display: block;
            transition: transform 0.3s ease;
        }

        .logo-link:hover .site-logo {
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            gap: 2.5rem;
            align-items: center;
        }

        .nav-links .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            text-decoration: none;
            padding: 0.5rem 0;
            font-weight: 700;
            color: var(--primary-blue);
        }

        .nav-links .nav-label {
            font-weight: 700;
            color: var(--primary-blue);
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .nav-links .nav-en {
            font-size: 0.7rem;
            color: #94A3B8;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            transition: all 0.3s ease;
            margin-top: 2px;
        }

        .nav-links .nav-link:hover {
            transform: translateY(-2px);
        }

        .nav-links .nav-link:hover .nav-label,
        .nav-links .nav-link:hover .nav-en {
            color: var(--primary-blue);
        }

        .nav-links .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--accent-teal);
            transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border-radius: 2px;
        }

        .nav-links .nav-link:hover::after,
        .nav-links .nav-link.active::after {
            width: calc(100% - 1.2rem);
        }

        .nav-links .nav-link.active .nav-label,
        .nav-links .nav-link.active .nav-en {
            color: var(--primary-blue);
        }

        .tyndall-overlay {
            display: none;
        }

        @media (max-width: 768px) {
            .header-container {
                padding: 0.65rem 1rem;
                /* 导航增至 4 项（含较长的「教师资源平台」）后，360–414px 单行放不下
                   （360px 下需 309px 而只有 253px）。改为让导航独占第二行，
                   保住字号与图标，不做缩小牺牲可读性。 */
                flex-wrap: wrap;
                row-gap: 0.35rem;
            }

            .site-logo {
                height: 40px;
            }

            .nav-links {
                gap: 1rem;
                width: 100%;
                justify-content: space-between;
            }

            .nav-links .nav-en {
                display: none;
            }

            /* 首屏文字在手机上两侧被裁：.hero-philosophy 的 .zh/.en 设了
               white-space: nowrap，无法换行 → .hero-content 的最小内容宽度被撑到
               556px（+2×32 padding = 620px），而它是 .hero 的 flex 项、min-width:auto
               无法收缩，于是居中后左右各被 body{overflow-x:hidden} 裁掉一大截
               （实测 left=-115 / right=505）。窄屏下必须允许换行。 */
            .hero-content {
                min-width: 0;
            }

            .hero-philosophy .zh,
            .hero-philosophy .en {
                white-space: normal;
            }
        }

        /* 手机上表格内边距过宽：.table-wrapper 宽 326px 而 padding 占 80px，
           700px 的课程表只能露出 35%。收窄以提升可读宽度。 */
        @media (max-width: 600px) {
            .table-wrapper {
                padding: 1rem 0.75rem;
                border-radius: 16px;
            }
        }