/* 
 * 广阳AI动漫造物者论坛 - 震撼沉浸式 H5 样式表
 * 设计理念：深空极暗、霓虹流光、玻璃拟态、微动交互、高对比度排版
 */

:root {
    --bg-color: #020205;
    --bg-gradient: radial-gradient(circle at 50% 50%, #0c081f 0%, #020205 100%);
    --text-primary: #ffffff;
    --text-secondary: #8e8e93;
    --text-dim: #515154;
    
    /* 霓虹色系 */
    --accent-cyan: #00f2fe;
    --accent-blue: #0066cc;
    --accent-purple: #7f00ff;
    --accent-pink: #ff007f;
    --accent-orange: #ff5e36;
    --accent-gold: #ffd700;
    
    --font-sans: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-accent: 'Zhi Mang Xing', 'PingFang SC', sans-serif;
    
    --transition-duration: 1.2s;
    --transition-easing: cubic-bezier(0.16, 1, 0.3, 1); /* easeOutExpo */
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-color);
    font-family: var(--font-sans);
    color: var(--text-primary);
    user-select: none;
    -webkit-user-select: none;
}

/* ==========================================
   Canvas 背景样式
   ========================================== */
#canvas-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    background: var(--bg-gradient);
    transition: background 1.5s ease;
}

/* ==========================================
   App 容器
   ========================================== */
.app-container {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.slides-container {
    position: relative;
    width: 100%;
    flex-grow: 1;
    overflow: hidden;
}

/* ==========================================
   Slide 通用样式
   ========================================== */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 6%;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.95) translateZ(0);
    transition: opacity var(--transition-duration) var(--transition-easing),
                transform var(--transition-duration) var(--transition-easing);
    will-change: opacity, transform;
}

.slide.active {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1) translateZ(0);
}

.slide.exited {
    opacity: 0;
    pointer-events: none;
    transform: scale(1.06) translateZ(0);
}

.slide-content {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ==========================================
   排版与文字细节
   ========================================== */
.section-tag {
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--accent-cyan);
    margin-bottom: 2rem;
    text-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.main-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    background: linear-gradient(to bottom, #ffffff 40%, #c4c4cc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 80px rgba(255, 255, 255, 0.1);
}

.sub-title {
    font-size: 1.15rem;
    font-weight: 300;
    line-height: 1.6;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    max-width: 650px;
}

.en-title {
    font-size: 0.75rem;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    margin-top: 2rem;
    max-width: 600px;
    line-height: 1.5;
}

/* 文字淡入动画 */
.text-fade {
    opacity: 0;
    transform: translateY(25px) translateZ(0);
    transition: opacity 1.4s var(--transition-easing),
                transform 1.4s var(--transition-easing);
    will-change: opacity, transform;
}

.slide.active .text-fade {
    opacity: 1;
    transform: translateY(0) translateZ(0);
}

.delay-1 { transition-delay: 0.25s; }
.delay-2 { transition-delay: 0.5s; }
.delay-3 { transition-delay: 0.75s; }
.delay-4 { transition-delay: 1s; }

/* ==========================================
   玻璃微动卡片 (Glassmorphism)
   ========================================== */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.card-glow-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    opacity: 0.08;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.glass-card:hover .card-glow-bg {
    opacity: 0.15;
}

.card-glow-bg.purple {
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 60%);
}

.card-glow-bg.orange {
    background: radial-gradient(circle, var(--accent-orange) 0%, transparent 60%);
}

.card-glow-bg.grey {
    background: radial-gradient(circle, #55555c 0%, transparent 60%);
}

.card-glow-bg.flame {
    background: radial-gradient(circle, var(--accent-orange) 0%, var(--accent-pink) 30%, transparent 60%);
}

/* ==========================================
   屏 1：星火中心样式
   ========================================== */
.spark-core-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 2.5rem;
    cursor: pointer;
}

.spark-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: #ffffff;
    box-shadow: 0 0 30px 10px #ffffff, 0 0 60px 20px var(--accent-cyan);
    animation: sparkBreathing 2s infinite ease-in-out;
}

.spark-pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: sparkPulse 2s infinite cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes sparkBreathing {
    0%, 100% { transform: translate(-50%, -50%) scale(0.9); box-shadow: 0 0 25px 8px #ffffff, 0 0 50px 15px var(--accent-cyan); }
    50% { transform: translate(-50%, -50%) scale(1.25); box-shadow: 0 0 40px 15px #ffffff, 0 0 80px 30px var(--accent-cyan); }
}

@keyframes sparkPulse {
    0% { transform: scale(0.3); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* ==========================================
   屏 2：卡片排版
   ========================================== */
.card-layout {
    gap: 1.5rem;
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
    margin-bottom: 1.5rem;
}

.glass-card.text-fade {
    padding: 1.8rem;
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

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

.card-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #ffffff;
}

.card-body {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.quote-text {
    font-size: 1rem;
    color: var(--accent-gold);
    font-weight: 300;
    margin-top: 1rem;
    letter-spacing: 0.05em;
}

/* ==========================================
   屏 3：魔盒已开
   ========================================== */
.box-container {
    perspective: 800px;
    width: 200px;
    height: 200px;
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.magic-box-wrapper {
    width: 100px;
    height: 100px;
    position: relative;
    transform-style: preserve-3d;
    animation: boxRotation 12s infinite linear;
    cursor: pointer;
}

.magic-box {
    width: 100%;
    height: 100%;
    position: absolute;
    transform-style: preserve-3d;
}

.face {
    position: absolute;
    width: 100px;
    height: 100px;
    border: 1.5px solid rgba(0, 242, 254, 0.4);
    background: rgba(12, 8, 31, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--accent-cyan);
    box-shadow: inset 0 0 20px rgba(0, 242, 254, 0.2);
}

.face.front  { transform: rotateY(  0deg) translateZ(50px); }
.face.back   { transform: rotateY(180deg) translateZ(50px); }
.face.right  { transform: rotateY( 90deg) translateZ(50px); border-color: rgba(127, 0, 255, 0.4); color: var(--accent-purple); box-shadow: inset 0 0 20px rgba(127, 0, 255, 0.2); }
.face.left   { transform: rotateY(-90deg) translateZ(50px); border-color: rgba(127, 0, 255, 0.4); color: var(--accent-purple); box-shadow: inset 0 0 20px rgba(127, 0, 255, 0.2); }
.face.top    { transform: rotateX( 90deg) translateZ(50px); }
.face.bottom { transform: rotateX(-90deg) translateZ(50px); }

.box-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
    opacity: 0.3;
    filter: blur(15px);
    pointer-events: none;
    transform: translateZ(-20px);
    transition: opacity 0.5s ease, background 0.5s ease;
}

@keyframes boxRotation {
    0% { transform: rotateX(0deg) rotateY(0deg); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

.vs-layout {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    width: 100%;
    gap: 1.5rem;
    position: relative;
}

.vs-side {
    flex: 1;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    text-align: left;
}

.vs-side h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.left-side h4 { color: var(--text-secondary); }
.right-side h4 { color: var(--accent-cyan); }

.vs-side p {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.vs-divider {
    align-self: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.15);
    padding: 0 0.5rem;
}

/* ==========================================
   屏 4：放大器与电波
   ========================================== */
.amplifier-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.wave-visualizer {
    width: 100%;
    height: 140px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.wave-svg {
    width: 100%;
    height: 100%;
}

.control-panel.glass-panel {
    width: 100%;
    max-width: 500px;
    padding: 1.2rem 1.8rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    backdrop-filter: blur(10px);
}

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

#slider-val {
    color: var(--accent-cyan);
    font-weight: 600;
}

/* 滑块美化 */
.premium-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    outline: none;
}

.premium-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.8), 0 0 2px var(--accent-cyan);
    cursor: pointer;
    transition: transform 0.1s;
}

.premium-slider::-webkit-slider-thumb:active {
    transform: scale(1.2);
}

.quotes-display {
    text-align: center;
}

.golden-quote {
    font-size: 1.35rem;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.golden-quote.font-accent {
    font-family: var(--font-accent);
    font-size: 2rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-cyan) 50%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.8rem;
}

.sub-quote {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ==========================================
   屏 5：灵魂抉择
   ========================================== */
.choice-layout .main-question {
    font-size: 1.45rem;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 2rem;
}

.choice-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    width: 100%;
    max-width: 700px;
    margin-bottom: 2.5rem;
}

.choice-card {
    padding: 2.2rem 1.5rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.choice-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #ffffff;
}

.choice-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 1.8rem;
    min-height: 50px;
}

.choice-btn {
    padding: 0.7rem 1.8rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
}

.choice-btn.secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.choice-card:hover .choice-btn.secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.choice-btn.primary {
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-pink));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(255, 94, 54, 0.3);
}

.choice-card:hover .choice-btn.primary {
    box-shadow: 0 6px 20px rgba(255, 94, 54, 0.5);
    transform: scale(1.05);
}

/* 选择后的渐变淡出效果 */
.choice-card.fade-out {
    opacity: 0.2;
    transform: scale(0.95);
    pointer-events: none;
}

.choice-card.selected {
    border-color: var(--accent-orange);
    box-shadow: 0 0 30px rgba(255, 94, 54, 0.2);
    transform: scale(1.03);
}

/* ==========================================
   屏 6：广阳落地场景
   ========================================== */
.scene-layout {
    gap: 1rem;
}

.scene-intro {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 750px;
    margin-bottom: 1.8rem;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.8rem;
    width: 100%;
    margin-bottom: 1.8rem;
}

.scenario-item.glass-card {
    padding: 1.2rem 0.8rem;
    text-align: center;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    border-color: rgba(255, 255, 255, 0.04);
}

.scenario-item.active {
    border-color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.05);
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.15);
    transform: translateY(-5px);
}

.sc-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    text-transform: uppercase;
}

.scenario-item.active .sc-badge {
    background: var(--accent-cyan);
    color: #000000;
    font-weight: 600;
}

.scenario-item h5 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.scenario-item p {
    font-size: 0.75rem;
    line-height: 1.4;
    color: var(--text-secondary);
}

.scene-footer-text {
    font-size: 0.95rem;
    color: var(--accent-gold);
    font-weight: 400;
    letter-spacing: 0.05em;
    margin-top: 0.5rem;
}

/* ==========================================
   屏 7：印记发射
   ========================================== */
.stamp-layout {
    gap: 0.5rem;
}

.input-panel.glass-card {
    width: 100%;
    max-width: 550px;
    padding: 1.5rem;
    margin-bottom: 3rem;
    text-align: left;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

#idea-input {
    width: 100%;
    height: 110px;
    background: none;
    border: none;
    outline: none;
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
    margin-bottom: 1rem;
}

#idea-input::placeholder {
    color: #48484a;
}

.input-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1rem;
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.send-btn {
    position: relative;
    padding: 0.7rem 2rem;
    border-radius: 30px;
    background: #ffffff;
    color: #000000;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.2s, background-color 0.2s;
}

.send-btn:hover {
    background: #e5e5ea;
    transform: translateY(-2px);
}

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

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    transition: 0.5s;
}

.send-btn:hover .btn-glow {
    left: 100%;
    transition: 0.7s ease-in-out;
}

.forum-footer-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}

.forum-logo {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: #ffffff;
}

.forum-meta {
    display: flex;
    gap: 0.8rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.dot-split {
    color: var(--text-dim);
}

/* ==========================================
   极简底栏 (Footer)
   ========================================== */
.presentation-footer {
    width: 100%;
    height: 70px;
    padding: 0 6%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    pointer-events: none;
}

.indicator-bar {
    display: flex;
    gap: 12px;
    pointer-events: auto;
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.15);
    cursor: pointer;
    transition: background-color 0.4s ease, transform 0.4s ease;
}

.dot:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.dot.active {
    background-color: var(--text-primary);
    transform: scale(1.3);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

.page-number-trigger {
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    cursor: pointer;
    pointer-events: auto;
    padding: 8px 12px;
    border-radius: 4px;
    transition: color 0.3s, background-color 0.3s;
}

.page-number-trigger:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.04);
}

.page-number-trigger .current {
    font-weight: 600;
    color: var(--text-primary);
}

.page-number-trigger .slash {
    margin: 0 2px;
    opacity: 0.3;
}

/* ==========================================
   演讲者控制面板 (Presenter Panel)
   ========================================== */
.presenter-panel {
    position: fixed;
    bottom: -400px;
    left: 50%;
    transform: translateX(-50%) translateZ(0);
    width: 90%;
    max-width: 800px;
    background: rgba(10, 8, 20, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -15px 40px rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    pointer-events: auto;
    transition: bottom 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: bottom;
}

.presenter-panel.open {
    bottom: 0;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.panel-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.close-panel-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    transition: color 0.2s;
}

.close-panel-btn:hover {
    color: var(--text-primary);
}

.panel-body {
    padding: 16px 20px 20px 20px;
}

.prompt-box {
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--accent-cyan);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 14px;
}

.prompt-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.prompt-text {
    font-size: 1rem;
    line-height: 1.6;
    color: #e5e5ea;
    font-weight: 300;
}

.next-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    margin-bottom: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 12px;
}

.next-label {
    color: var(--text-secondary);
}

.next-title {
    color: var(--text-primary);
}

.presenter-controls {
    display: flex;
    gap: 12px;
}

.ctrl-btn {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    cursor: pointer;
    border: none;
    transition: background 0.2s, transform 0.1s;
}

.btn-prev {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-prev:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-next {
    background: var(--text-primary);
    color: #000000;
    font-weight: 600;
}

.btn-next:hover {
    background: #e5e5ea;
}

.ctrl-btn:active {
    transform: scale(0.97);
}

/* ==========================================
   引导提示
   ========================================== */
.tap-tip {
    position: fixed;
    bottom: 85px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    pointer-events: none;
    z-index: 10;
    opacity: 0;
    animation: fadeInOut 5s ease forwards;
}

.tip-icon {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--text-secondary);
    border-radius: 50%;
    position: relative;
}

.tip-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 5px;
    height: 5px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: heartBeat 1.8s infinite;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translate(-50%, 8px); }
    15% { opacity: 0.7; transform: translate(-50%, 0); }
    85% { opacity: 0.7; }
    100% { opacity: 0; pointer-events: none; }
}

@keyframes heartBeat {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.4); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
}

/* ==========================================
   移动端响应式适配
   ========================================== */
@media (max-width: 768px) {
    .main-title {
        font-size: 1.6rem;
        letter-spacing: 0.03em;
        margin-bottom: 1rem;
        line-height: 1.3;
    }
    
    .sub-title {
        font-size: 0.95rem;
        line-height: 1.5;
        padding: 0 2%;
    }
    
    .en-title {
        font-size: 0.65rem;
        letter-spacing: 0.12em;
        margin-top: 1.2rem;
    }
    
    .section-tag {
        font-size: 0.8rem;
        margin-bottom: 1.2rem;
    }
    
    /* 屏 2 移动端 */
    .card-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .glass-card.text-fade {
        padding: 1.2rem;
    }
    
    .card-header {
        margin-bottom: 0.5rem;
        gap: 0.6rem;
    }
    
    .card-header h3 {
        font-size: 1rem;
    }
    
    .card-body {
        font-size: 0.8rem;
        line-height: 1.5;
    }
    
    .quote-text {
        font-size: 0.85rem;
        margin-top: 0.5rem;
    }
    
    /* 屏 3 移动端 */
    .box-container {
        width: 140px;
        height: 140px;
        margin-bottom: 1rem;
    }
    
    .magic-box-wrapper {
        width: 70px;
        height: 70px;
    }
    
    .face {
        width: 70px;
        height: 70px;
        font-size: 0.6rem;
    }
    
    .face.front  { transform: rotateY(  0deg) translateZ(35px); }
    .face.back   { transform: rotateY(180deg) translateZ(35px); }
    .face.right  { transform: rotateY( 90deg) translateZ(35px); }
    .face.left   { transform: rotateY(-90deg) translateZ(35px); }
    .face.top    { transform: rotateX( 90deg) translateZ(35px); }
    .face.bottom { transform: rotateX(-90deg) translateZ(35px); }
    
    .vs-layout {
        flex-direction: column;
        gap: 0.6rem;
    }
    
    .vs-side {
        padding: 0.8rem;
    }
    
    .vs-side h4 {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }
    
    .vs-side p {
        font-size: 0.75rem;
        line-height: 1.4;
    }
    
    .vs-divider {
        font-size: 0.85rem;
        padding: 0.1rem 0;
    }
    
    /* 屏 4 移动端 */
    .wave-visualizer {
        height: 90px;
    }
    
    .control-panel.glass-panel {
        padding: 0.8rem 1.2rem;
    }
    
    .slider-header {
        font-size: 0.8rem;
    }
    
    .golden-quote.font-accent {
        font-size: 1.4rem;
    }
    
    .sub-quote {
        font-size: 0.8rem;
    }
    
    /* 屏 5 移动端 */
    .choice-layout .main-question {
        font-size: 1.15rem;
        margin-bottom: 1.2rem;
    }
    
    .choice-container {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        margin-bottom: 1.2rem;
    }
    
    .choice-card {
        padding: 1.2rem 1rem;
    }
    
    .choice-card h4 {
        font-size: 1.05rem;
        margin-bottom: 0.4rem;
    }
    
    .choice-card p {
        font-size: 0.75rem;
        line-height: 1.45;
        margin-bottom: 1rem;
        min-height: auto;
    }
    
    .choice-btn {
        padding: 0.5rem 1.4rem;
        font-size: 0.75rem;
    }
    
    /* 屏 6 移动端 */
    .scene-intro {
        font-size: 0.8rem;
        line-height: 1.5;
        margin-bottom: 1rem;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        margin-bottom: 1rem;
    }
    
    /* 最后一项在手机端占满两列 */
    .scenario-item:last-child {
        grid-column: span 2;
    }
    
    .scenario-item.glass-card {
        padding: 0.8rem 0.5rem;
    }
    
    .sc-badge {
        font-size: 0.65rem;
        padding: 0.15rem 0.4rem;
        margin-bottom: 0.4rem;
    }
    
    .scenario-item h5 {
        font-size: 0.8rem;
        margin-bottom: 0.2rem;
    }
    
    .scenario-item p {
        font-size: 0.65rem;
        line-height: 1.3;
    }
    
    .scene-footer-text {
        font-size: 0.8rem;
    }
    
    /* 屏 7 移动端 */
    .input-panel.glass-card {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    #idea-input {
        height: 80px;
        font-size: 0.85rem;
    }
    
    .forum-logo {
        font-size: 0.95rem;
    }
    
    .forum-meta {
        font-size: 0.7rem;
    }
    
    /* 演讲者后台移动端 */
    .presenter-panel {
        width: 100%;
        border-radius: 12px 12px 0 0;
        left: 0;
        transform: translateZ(0);
    }
    
    .panel-body {
        padding: 12px 16px 16px 16px;
    }
    
    .prompt-text {
        font-size: 0.85rem;
        line-height: 1.5;
    }
    
    .ctrl-btn {
        padding: 10px;
        font-size: 0.8rem;
    }
}

/* 矮屏幕横屏适配 */
@media (max-height: 500px) and (orientation: landscape) {
    .main-title { font-size: 1.4rem; margin-bottom: 0.5rem; }
    .sub-title { font-size: 0.85rem; }
    .presentation-footer { height: 45px; }
    .spark-core-wrapper { width: 50px; height: 50px; margin-bottom: 1rem; }
}