/* ============================================
   上海零碳企业展示墙样式
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* 屏幕阅读器专用 - 视觉隐藏 */
.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;
}

:root {
    --carbon-black: #0a0a0b;
    --titanium-gray: #1a1a1c;
    --steel-gray: #2a2a2e;
    --graphite: #3a3a40;
    --platinum: #e8e8e8;
    --silver: #c0c0c0;
    --cold-white: #f5f5f7;
    --accent-cyan: #00d4aa;
    --accent-blue: #4a90d9;
    --accent-gold: #c9a962;
    
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Courier New', monospace;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-primary);
    background-color: #0a0a0b;
    color: #e8e8e8;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
}

/* 音乐控制 */
.music-control {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: end;
    -webkit-align-items: flex-end;
    align-items: flex-end;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    gap: 3px;
    z-index: 1000;
    cursor: pointer;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.music-line {
    width: 3px;
    background: #00d4aa;
    border-radius: 2px;
    -webkit-transition: height 0.3s ease;
    transition: height 0.3s ease;
}

.music-line:nth-child(1) { height: 8px; }
.music-line:nth-child(2) { height: 14px; }
.music-line:nth-child(3) { height: 10px; }

.music-control[data-playing="true"] .music-line:nth-child(1) {
    -webkit-animation: musicWave1 1s ease-in-out infinite;
    animation: musicWave1 1s ease-in-out infinite;
}

.music-control[data-playing="true"] .music-line:nth-child(2) {
    -webkit-animation: musicWave2 1s ease-in-out infinite 0.2s;
    animation: musicWave2 1s ease-in-out infinite 0.2s;
}

.music-control[data-playing="true"] .music-line:nth-child(3) {
    -webkit-animation: musicWave3 1s ease-in-out infinite 0.4s;
    animation: musicWave3 1s ease-in-out infinite 0.4s;
}

/* PC端禁止访问 */
.pc-block {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--carbon-black);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.pc-content {
    text-align: center;
    padding: 60px;
}

.pc-line {
    width: 60px;
    height: 1px;
    background: var(--graphite);
    margin: 30px auto;
}

.pc-content h2 {
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 8px;
    color: var(--platinum);
    margin-bottom: 16px;
}

.pc-content p {
    font-size: 13px;
    color: var(--silver);
    letter-spacing: 2px;
}

@media screen and (min-width: 768px) {
    .pc-block {
        display: flex;
    }
    .page-container {
        display: none !important;
    }
}

/* 页面容器 */
.page-container {
    width: 100%;
    height: 100%;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    -webkit-scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.screen {
    width: 100%;
    min-height: 100vh;
    scroll-snap-align: start;
    -webkit-scroll-snap-align: start;
    position: relative;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
    padding: 60px 20px 40px;
    overflow: hidden;
}

/* ============================================
   封面页
   ============================================ */
.cover {
    background: linear-gradient(180deg, var(--carbon-black) 0%, var(--titanium-gray) 100%);
    justify-content: center;
    align-items: center;
    text-align: center;
}

.cover-content {
    position: relative;
    z-index: 10;
}

.cover-badge {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 6px;
    color: var(--accent-cyan);
    margin-bottom: 30px;
    opacity: 0.8;
}

.cover-title {
    font-size: 42px;
    font-weight: 300;
    letter-spacing: 8px;
    color: var(--cold-white);
    margin-bottom: 12px;
}

.cover-subtitle {
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 4px;
    color: var(--silver);
    margin-bottom: 60px;
}

.cover-stats {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 200;
    color: var(--accent-cyan);
    letter-spacing: -2px;
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--silver);
    letter-spacing: 2px;
    margin-top: 8px;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, transparent 0%, var(--graphite) 50%, transparent 100%);
}

.cover-year {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--graphite);
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--silver) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-hint span {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--graphite);
    text-transform: uppercase;
}

/* ============================================
   年份标识
   ============================================ */
.year-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--accent-cyan);
    padding: 8px 20px;
    border: 1px solid var(--accent-cyan);
    margin-bottom: 30px;
    align-self: flex-start;
}

.year-2023 {
    background: linear-gradient(180deg, var(--titanium-gray) 0%, var(--carbon-black) 100%);
}

.year-2024 {
    background: linear-gradient(180deg, var(--carbon-black) 0%, var(--titanium-gray) 100%);
}

.year-2025 {
    background: linear-gradient(180deg, var(--titanium-gray) 0%, var(--carbon-black) 100%);
}

.batch-title {
    font-size: 22px;
    font-weight: 300;
    letter-spacing: 3px;
    color: var(--cold-white);
    margin-bottom: 8px;
}

.batch-subtitle {
    font-size: 13px;
    color: var(--silver);
    letter-spacing: 2px;
    margin-bottom: 30px;
    opacity: 0.7;
}

.section-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--graphite) 50%, transparent 100%);
    margin: 30px 0;
}

/* ============================================
   企业卡片网格
   ============================================ */
.enterprise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    width: 100%;
}

.enterprise-grid.small {
    grid-template-columns: 1fr;
}

.enterprise-card {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(42, 42, 46, 0.5);
    border-left: 2px solid var(--accent-cyan);
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.enterprise-card.highlight {
    background: rgba(0, 212, 170, 0.1);
    border-left-color: var(--accent-gold);
}

.card-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-cyan);
    min-width: 24px;
    opacity: 0.6;
}

.card-name {
    font-size: 15px;
    color: var(--platinum);
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.card-tag {
    font-size: 10px;
    color: var(--accent-gold);
    letter-spacing: 1px;
    margin-left: auto;
    padding: 2px 8px;
    border: 1px solid var(--accent-gold);
}

/* ============================================
   园区卡片
   ============================================ */
.park-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    width: 100%;
}

.park-card {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(42, 42, 46, 0.5);
    border-left: 2px solid var(--accent-blue);
}

.park-icon {
    font-size: 14px;
    color: var(--accent-blue);
}

.park-name {
    font-size: 15px;
    color: var(--platinum);
    letter-spacing: 0.5px;
}

.park-showcase {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
    gap: 16px;
    width: 100%;
}

.park-card.large {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: start;
    -webkit-align-items: flex-start;
    align-items: flex-start;
    gap: 12px;
    padding: 24px;
    border-left: 3px solid var(--accent-blue);
}

.park-card.large.highlight {
    border-left-color: var(--accent-cyan);
    background: rgba(0, 212, 170, 0.1);
}

.park-header {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    gap: 12px;
}

.park-badge {
    font-size: 10px;
    color: var(--accent-blue);
    letter-spacing: 1px;
    padding: 2px 8px;
    border: 1px solid var(--accent-blue);
}

.park-badge.national {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

.park-card.large .park-name {
    font-size: 18px;
    letter-spacing: 1px;
}

.park-note {
    font-size: 12px;
    color: var(--silver);
    opacity: 0.7;
}

/* ============================================
   结尾页
   ============================================ */
.ending {
    background: linear-gradient(180deg, var(--carbon-black) 0%, var(--titanium-gray) 100%);
    justify-content: center;
    align-items: center;
    text-align: center;
}

.ending-content {
    position: relative;
    z-index: 10;
}

.ending-logo {
    display: block;
    width: 70vw;
    height: 70vw;
    max-width: 300px;
    max-height: 300px;
    object-fit: contain;
    -o-object-fit: contain;
    margin: 0 auto 40px;
    opacity: 0.95;
    border-radius: 32px;
    -webkit-border-radius: 32px;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 20px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    -webkit-box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    overflow: hidden;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-flex-shrink: 0;
    flex-shrink: 0;
}

.ending-icon {
    font-size: 48px;
    color: var(--accent-cyan);
    margin-bottom: 30px;
    opacity: 0.8;
}

.ending-title {
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 8px;
    color: var(--cold-white);
    margin-bottom: 12px;
}

.ending-subtitle {
    font-size: 14px;
    color: var(--silver);
    letter-spacing: 3px;
    margin-bottom: 50px;
}

.ending-stats {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
}

.ending-stat {
    text-align: center;
}

.ending-number {
    display: block;
    font-size: 36px;
    font-weight: 200;
    color: var(--accent-cyan);
    letter-spacing: -1px;
}

.ending-label {
    display: block;
    font-size: 12px;
    color: var(--silver);
    letter-spacing: 1px;
    margin-top: 6px;
}

.ending-year {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--graphite);
    margin-bottom: 40px;
}

/* 返回邀请函 */
.back-entry {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--steel-gray);
}

.back-link {
    display: -webkit-inline-box;
    display: -webkit-inline-flex;
    display: inline-flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: rgba(0, 212, 170, 0.08);
    border: 1px solid var(--accent-cyan);
    text-decoration: none;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.back-link:active {
    background: rgba(0, 212, 170, 0.15);
    transform: translateY(-2px);
}

.back-arrow {
    font-size: 16px;
    color: var(--accent-cyan);
    transition: transform 0.3s ease;
}

.back-link:active .back-arrow {
    transform: translateX(-4px);
}

.back-text {
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--platinum);
}

/* ============================================
   页面指示器
   ============================================ */
.page-indicator {
    position: fixed;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

.indicator-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    background: var(--graphite);
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background: var(--accent-cyan);
    -webkit-transform: scale(1.3);
    transform: scale(1.3);
}

/* ============================================
   动画
   ============================================ */
@keyframes scrollPulse {
    0%, 100% { 
        opacity: 0.3;
        -webkit-transform: scaleY(1);
        transform: scaleY(1);
    }
    50% { 
        opacity: 0.8;
        -webkit-transform: scaleY(1.1);
        transform: scaleY(1.1);
    }
}

/* 音乐动画 */
@-webkit-keyframes musicWave1 {
    0%, 100% { height: 8px; }
    50% { height: 16px; }
}

@keyframes musicWave1 {
    0%, 100% { height: 8px; }
    50% { height: 16px; }
}

@-webkit-keyframes musicWave2 {
    0%, 100% { height: 14px; }
    50% { height: 8px; }
}

@keyframes musicWave2 {
    0%, 100% { height: 14px; }
    50% { height: 8px; }
}

@-webkit-keyframes musicWave3 {
    0%, 100% { height: 10px; }
    50% { height: 18px; }
}

@keyframes musicWave3 {
    0%, 100% { height: 10px; }
    50% { height: 18px; }
}

/* 卡片入场动画 */
.screen.active .enterprise-card {
    -webkit-animation: cardFadeIn 0.5s ease-out both;
    animation: cardFadeIn 0.5s ease-out both;
}

.screen.active .enterprise-card:nth-child(1) { animation-delay: 0.1s; }
.screen.active .enterprise-card:nth-child(2) { animation-delay: 0.15s; }
.screen.active .enterprise-card:nth-child(3) { animation-delay: 0.2s; }
.screen.active .enterprise-card:nth-child(4) { animation-delay: 0.25s; }
.screen.active .enterprise-card:nth-child(5) { animation-delay: 0.3s; }
.screen.active .enterprise-card:nth-child(6) { animation-delay: 0.35s; }
.screen.active .enterprise-card:nth-child(7) { animation-delay: 0.4s; }
.screen.active .enterprise-card:nth-child(8) { animation-delay: 0.45s; }
.screen.active .enterprise-card:nth-child(9) { animation-delay: 0.5s; }
.screen.active .enterprise-card:nth-child(10) { animation-delay: 0.55s; }
.screen.active .enterprise-card:nth-child(11) { animation-delay: 0.6s; }
.screen.active .enterprise-card:nth-child(12) { animation-delay: 0.65s; }
.screen.active .enterprise-card:nth-child(13) { animation-delay: 0.7s; }
.screen.active .enterprise-card:nth-child(14) { animation-delay: 0.75s; }
.screen.active .enterprise-card:nth-child(15) { animation-delay: 0.8s; }

@-webkit-keyframes cardFadeIn {
    from {
        opacity: 0;
        -webkit-transform: translateX(-20px);
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}