/* ==========================================
   中秋节 · 共享样式
   导航、页脚、变量、星空、月亮、灯笼
   ========================================== */

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

:root {
    --color-night-deep: #0a0e27;
    --color-night: #1a1a3e;
    --color-night-mid: #2d1b4e;
    --color-night-soft: #3d2b5e;
    --color-gold: #ffd700;
    --color-gold-soft: #ffec8b;
    --color-gold-deep: #daa520;
    --color-cream: #fff8dc;
    --color-red: #c8102e;
    --color-red-deep: #8b0000;
    --color-orange: #ff7f3f;
    --color-text: var(--color-cream);
    --color-text-soft: rgba(255, 248, 220, 0.78);
    --color-bg-page: radial-gradient(ellipse at top, var(--color-night-mid) 0%, var(--color-night-deep) 60%, #050816 100%);
    --color-bg-content: transparent;
    --color-card-bg: rgba(10, 5, 24, 0.4);
    --color-border: rgba(255, 215, 0, 0.25);
    --font-calligraphy: 'Ma Shan Zheng', 'STKaiti', 'KaiTi', serif;
    --font-poem: 'ZCOOL QingKe HuangYou', 'STKaiti', serif;
    --font-title: 'ZCOOL XiaoWei', 'STKaiti', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html[data-theme="light"] {
    --color-night-deep: #fff5e6;
    --color-night: #ffe8d0;
    --color-night-mid: #ffd9b3;
    --color-night-soft: #f5d5a8;
    --color-cream: #3a2418;
    --color-text: #3a2418;
    --color-text-soft: rgba(58, 36, 24, 0.75);
    --color-bg-page: linear-gradient(135deg,
        #fff5e6 0%,
        #ffe8d0 35%,
        #ffd9b3 70%,
        #f5d5a8 100%);
    --color-bg-content: transparent;
    --color-card-bg: rgba(255, 250, 240, 0.85);
    --color-border: rgba(200, 16, 46, 0.25);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--color-bg-page);
    background-attachment: fixed;
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background 0.4s ease, color 0.3s ease;
}

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

/* ==========================================
   导航
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    gap: 16px;
}

.logo {
    font-family: var(--font-calligraphy);
    font-size: 26px;
    color: var(--color-gold);
    text-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.nav-back {
    font-size: 13px;
    color: var(--color-gold);
    opacity: 0.72;
    text-decoration: none;
    white-space: nowrap;
    padding: 5px 12px;
    border: 1px solid currentColor;
    border-radius: 999px;
    transition: opacity 0.2s, background 0.2s;
}

.nav-back:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.07);
}

@media (max-width: 480px) {
    .nav-brand { gap: 8px; }
    .nav-back { font-size: 0; padding: 5px 9px; }
    .nav-back::before { content: '←'; font-size: 14px; }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 18px;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    flex: 1 1 0;
    min-width: 0;
    justify-content: flex-start;
    padding: 4px 0 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.nav-links a {
    color: var(--color-cream);
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 1px;
    position: relative;
    transition: color 0.3s;
    white-space: nowrap;
}

.nav-links li { flex-shrink: 0; }

.nav-links::-webkit-scrollbar { height: 4px; }
.nav-links::-webkit-scrollbar-track { background: transparent; }
.nav-links::-webkit-scrollbar-thumb { background: rgba(255, 215, 0, 0.4); border-radius: 2px; }

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: width 0.3s;
}

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

.nav-links a.active {
    color: var(--color-gold);
}

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

/* ---------- 主题切换按钮 ---------- */
.theme-toggle {
    background: rgba(255, 215, 0, 0.08);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.3s;
    flex-shrink: 0;
    margin-left: 12px;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(255, 215, 0, 0.18);
    border-color: var(--color-gold);
    transform: rotate(15deg);
}

.theme-toggle .theme-icon-dark,
.theme-toggle .theme-icon-light {
    position: absolute;
    font-size: 18px;
    line-height: 1;
    transition: opacity 0.3s, transform 0.4s;
}

.theme-toggle .theme-icon-dark {
    opacity: 1;
    transform: rotate(0) scale(1);
}

.theme-toggle .theme-icon-light {
    opacity: 0;
    transform: rotate(-180deg) scale(0.4);
}

html[data-theme="light"] .theme-toggle .theme-icon-dark {
    opacity: 0;
    transform: rotate(180deg) scale(0.4);
}

html[data-theme="light"] .theme-toggle .theme-icon-light {
    opacity: 1;
    transform: rotate(0) scale(1);
}

html[data-theme="light"] .nav {
    background: rgba(255, 245, 230, 0.85);
    border-bottom-color: rgba(200, 16, 46, 0.2);
}

html[data-theme="light"] .nav-links a {
    color: var(--color-text);
}

html[data-theme="light"] .footer {
    background: rgba(255, 245, 230, 0.85);
    border-top-color: rgba(200, 16, 46, 0.2);
}

html[data-theme="light"] .footer p,
html[data-theme="light"] .footer-links a {
    color: var(--color-text);
}

html[data-theme="light"] .page-hero {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.18) 0%, rgba(200, 16, 46, 0.12) 100%);
    border-bottom: 1px solid rgba(200, 16, 46, 0.15);
}

html[data-theme="light"] .page-hero h1 {
    color: var(--color-red-deep);
}

html[data-theme="light"] .page-hero p {
    color: var(--color-text);
    opacity: 0.7;
}

html[data-theme="light"] .section-intro,
html[data-theme="light"] .module-desc,
html[data-theme="light"] .feature-label,
html[data-theme="light"] .daily-label,
html[data-theme="light"] .daily-quote-author {
    color: var(--color-text);
}

html[data-theme="light"] .module-card,
html[data-theme="light"] .feature-item,
html[data-theme="light"] .daily-card,
html[data-theme="light"] .page-content {
    background: rgba(255, 250, 240, 0.7);
    border-color: rgba(200, 16, 46, 0.2);
}

html[data-theme="light"] .module-title,
html[data-theme="light"] .daily-quote-text,
html[data-theme="light"] .feature-num {
    color: var(--color-red-deep);
}

html[data-theme="light"] .daily-quote {
    color: var(--color-text);
}

/* ==========================================
   内页 Hero（小型 banner）
   ========================================== */
.page-hero {
    padding: 140px 24px 80px;
    text-align: center;
    background: linear-gradient(180deg,
        var(--color-night-deep) 0%,
        var(--color-night) 100%);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 60%);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.page-hero h1 {
    font-family: var(--font-calligraphy);
    font-size: clamp(40px, 7vw, 80px);
    color: var(--color-gold);
    letter-spacing: 8px;
    margin-bottom: 12px;
    text-shadow: 0 0 24px rgba(255, 215, 0, 0.4);
    position: relative;
    z-index: 2;
}

.page-hero p {
    font-size: 14px;
    color: var(--color-gold-soft);
    letter-spacing: 4px;
    opacity: 0.8;
    text-transform: uppercase;
    position: relative;
    z-index: 2;
}

/* ==========================================
   通用容器
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.page-content {
    padding: 60px 0 120px;
    background: var(--color-night-deep);
}

.page-content h2 {
    font-family: var(--font-calligraphy);
    font-size: clamp(28px, 4vw, 42px);
    color: var(--color-gold);
    text-align: center;
    letter-spacing: 6px;
    margin-bottom: 16px;
    text-shadow: 0 0 16px rgba(255, 215, 0, 0.3);
}

.page-content .section-intro {
    text-align: center;
    color: var(--color-gold-soft);
    font-size: 15px;
    letter-spacing: 2px;
    margin-bottom: 60px;
    opacity: 0.85;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.9;
}

/* ==========================================
   通用网格
   ========================================== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ==========================================
   通用卡片
   ========================================== */
.card {
    background: linear-gradient(135deg,
        rgba(255, 215, 0, 0.04) 0%,
        rgba(200, 16, 46, 0.04) 100%);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 18px;
    padding: 32px 28px;
    transition: all 0.4s;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--color-gold);
    box-shadow: 0 16px 40px rgba(255, 215, 0, 0.12);
}

/* ==========================================
   面包屑
   ========================================== */
.breadcrumb {
    max-width: 1280px;
    margin: 0 auto;
    padding: 90px 24px 0;
    font-size: 13px;
    color: var(--color-gold-soft);
    opacity: 0.7;
    letter-spacing: 1px;
}

.breadcrumb a:hover { color: var(--color-gold); }

.breadcrumb span { margin: 0 8px; opacity: 0.5; }

/* ==========================================
   页脚
   ========================================== */
.footer {
    padding: 60px 24px;
    background: var(--color-night-deep);
    text-align: center;
    border-top: 1px solid rgba(255, 215, 0, 0.1);
}

.footer p {
    font-family: var(--font-calligraphy);
    font-size: 24px;
    color: var(--color-gold);
    letter-spacing: 6px;
    margin-bottom: 12px;
}

.footer-sub {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-cream);
    letter-spacing: 3px;
    opacity: 0.6;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--color-cream);
    opacity: 0.6;
}

.footer-links a:hover { color: var(--color-gold); }

/* ==========================================
   响应式
   ========================================== */
@media (max-width: 768px) {
    .nav-inner { padding: 10px 14px; gap: 8px; flex-wrap: nowrap; }
    .logo { font-size: 20px; flex-shrink: 0; }
    .nav-links {
        gap: 16px;
    }
    .theme-toggle { width: 32px; height: 32px; margin-left: 6px; }
    .theme-toggle .theme-icon-dark,
    .theme-toggle .theme-icon-light { font-size: 16px; }
    .nav-links a { font-size: 12px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .breadcrumb { padding-top: 70px; }
    .page-hero { padding: 80px 16px 50px; }
    .page-content { padding: 40px 0 80px; }
}

@media (max-width: 380px) {
    .nav-links { gap: 12px; }
    .nav-links a { font-size: 11px; letter-spacing: 0; }
    .page-hero h1 { letter-spacing: 4px; }
}

/* ==========================================
   全局通用：分享按钮 / TTS 按钮 / Toast
   ========================================== */
.share-btn,
.speak-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 215, 0, 0.08);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: var(--color-gold);
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 13px;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.share-btn:hover,
.speak-btn:hover {
    background: rgba(255, 215, 0, 0.15);
    border-color: var(--color-gold);
}

.speak-btn.speaking {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(200, 16, 46, 0.2));
    border-color: var(--color-gold);
    color: var(--color-gold);
    animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.5); }
    50% { box-shadow: 0 0 0 6px rgba(255, 215, 0, 0); }
}

.mid-autumn-toast {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(0, 0, 0, 0.85);
    color: var(--color-gold);
    padding: 12px 24px;
    border-radius: 999px;
    border: 1px solid rgba(255, 215, 0, 0.4);
    font-size: 14px;
    letter-spacing: 2px;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.mid-autumn-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 音乐控制按钮（浮动） */
.music-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffd700 0%, #c8102e 100%);
    border: 2px solid rgba(255, 215, 0, 0.5);
    color: white;
    font-size: 22px;
    cursor: pointer;
    z-index: 99;
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.4);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.music-toggle:hover {
    transform: scale(1.1) rotate(8deg);
    box-shadow: 0 10px 28px rgba(200, 16, 46, 0.5);
}

.music-toggle.playing {
    background: linear-gradient(135deg, #c8102e 0%, #8b0000 100%);
}

.music-toggle .music-icon {
    animation: spin 4s linear infinite;
    animation-play-state: paused;
}

.music-toggle.playing .music-icon {
    animation-play-state: running;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 568px) {
    .music-toggle { width: 44px; height: 44px; font-size: 18px; bottom: 16px; right: 16px; }
}

/* ==========================================
   阅读进度条 + 回到顶部
   ========================================== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-red) 100%);
    z-index: 200;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
    pointer-events: none;
}

.section-indicator {
    position: fixed;
    top: 96px;
    right: 20px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    pointer-events: none;
}
.section-indicator-bar {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px 10px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 215, 0, 0.18);
    border-radius: 20px;
    pointer-events: auto;
}
.section-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}
.section-dot:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.3);
}
.section-dot.active {
    background: var(--color-gold);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
    transform: scale(1.4);
}
.section-indicator-label {
    font-size: 12px;
    color: var(--color-gold);
    background: rgba(0, 0, 0, 0.6);
    padding: 4px 10px;
    border-radius: 10px;
    pointer-events: auto;
    white-space: nowrap;
    letter-spacing: 2px;
}
.nav-section-active {
    color: var(--color-gold) !important;
    font-weight: bold;
    position: relative;
}
.nav-section-active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--color-gold);
    border-radius: 2px;
}
@media (max-width: 768px) {
    .section-indicator { display: none; }
}

.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 88px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.5);
    color: var(--color-gold);
    font-size: 22px;
    cursor: pointer;
    z-index: 98;
    opacity: 0;
    transform: translateY(20px) scale(0.8);
    pointer-events: none;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.back-to-top:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: var(--color-gold);
    transform: translateY(-3px) scale(1.05);
}

.shortcuts-help {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-orange) 100%);
    color: var(--color-night-deep);
    border: none;
    border-radius: 50%;
    font-family: var(--font-title);
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.2);
    z-index: 998;
    line-height: 1;
}

.shortcuts-help.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.shortcuts-help:hover {
    transform: translateY(-3px) scale(1.08);
    box-shadow: 0 10px 26px rgba(255, 215, 0, 0.55);
}

@media (max-width: 568px) {
    .back-to-top { right: 68px; width: 38px; height: 38px; font-size: 18px; bottom: 16px; }
    .shortcuts-help { right: 16px; width: 38px; height: 38px; font-size: 16px; bottom: 16px; }
}

/* ==========================================
   快捷键面板
   ========================================== */
.shortcuts-mask {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.25s;
}

.shortcuts-mask.show { opacity: 1; }

.shortcuts-modal {
    max-width: 720px;
    width: 100%;
    max-height: 86vh;
    overflow-y: auto;
    background: linear-gradient(160deg,
        rgba(26, 16, 50, 0.98) 0%,
        rgba(10, 5, 24, 0.98) 100%);
    border: 1px solid rgba(255, 215, 0, 0.4);
    border-radius: 20px;
    padding: 32px 36px 28px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
    position: relative;
    transform: scale(0.94) translateY(8px);
    transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

.shortcuts-mask.show .shortcuts-modal {
    transform: scale(1) translateY(0);
}

.shortcuts-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    background: rgba(255, 215, 0, 0.08);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    color: var(--color-gold);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
}

.shortcuts-close:hover {
    background: rgba(255, 215, 0, 0.18);
    transform: rotate(90deg);
}

.shortcuts-title {
    font-family: var(--font-title);
    font-size: 26px;
    color: var(--color-gold);
    text-align: center;
    letter-spacing: 4px;
    margin-bottom: 6px;
}

.shortcuts-sub {
    text-align: center;
    font-size: 13px;
    color: var(--color-gold-soft);
    letter-spacing: 1.5px;
    opacity: 0.7;
    margin-bottom: 24px;
}

.shortcuts-section { margin-bottom: 22px; }

.shortcuts-section-title {
    font-size: 13px;
    color: var(--color-gold-soft);
    letter-spacing: 3px;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px dashed rgba(255, 215, 0, 0.2);
}

.shortcuts-list { display: flex; flex-direction: column; gap: 8px; }

.shortcut-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 6px 4px;
}

.shortcut-row kbd {
    display: inline-block;
    min-width: 28px;
    padding: 4px 10px;
    text-align: center;
    background: linear-gradient(180deg, rgba(255, 215, 0, 0.12) 0%, rgba(255, 215, 0, 0.04) 100%);
    border: 1px solid rgba(255, 215, 0, 0.4);
    border-bottom-width: 2px;
    border-radius: 6px;
    color: var(--color-gold);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
}

.shortcut-row > span {
    color: var(--color-cream);
    font-size: 14px;
    letter-spacing: 1.5px;
    opacity: 0.85;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.shortcut-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 6px;
    background: rgba(10, 5, 24, 0.4);
    border: 1px solid rgba(255, 215, 0, 0.18);
    border-radius: 10px;
    text-decoration: none;
    color: var(--color-cream);
    transition: all 0.2s;
    position: relative;
}

.shortcut-tile:hover {
    background: rgba(255, 215, 0, 0.08);
    border-color: var(--color-gold);
    transform: translateY(-2px);
}

.shortcut-tile-key {
    position: absolute;
    top: 4px;
    right: 6px;
    font-size: 10px;
    color: var(--color-gold);
    background: rgba(255, 215, 0, 0.1);
    padding: 1px 5px;
    border-radius: 4px;
    letter-spacing: 1px;
    font-weight: 600;
}

.shortcut-tile-icon { font-size: 22px; margin-top: 6px; }
.shortcut-tile-text { font-size: 12px; letter-spacing: 1px; opacity: 0.85; }

@media (max-width: 568px) {
    .shortcuts-modal { padding: 24px 20px 20px; }
    .shortcuts-title { font-size: 22px; }
    .shortcuts-grid { grid-template-columns: repeat(3, 1fr); }
    .shortcut-tile { padding: 10px 4px; }
    .shortcut-tile-text { font-size: 11px; }
    .shortcut-row > span { font-size: 13px; }
}

/* ==========================================
   数据来源披露（透明性）
   ========================================== */
.data-disclosure {
    max-width: 920px;
    margin: 60px auto 0;
    padding: 0;
    background: linear-gradient(135deg,
        rgba(255, 192, 224, 0.04) 0%,
        rgba(200, 74, 142, 0.04) 100%);
    border: 1px solid rgba(255, 192, 224, 0.2);
    border-radius: 14px;
    transition: border-color 0.3s;
}

html[data-theme="light"] .data-disclosure {
    background: rgba(255, 245, 250, 0.7);
    border-color: rgba(200, 74, 142, 0.2);
}

.data-disclosure[open] { border-color: var(--color-gold); }

.data-disclosure summary {
    padding: 18px 24px;
    cursor: pointer;
    font-family: var(--font-title);
    font-size: 15px;
    color: var(--color-gold);
    letter-spacing: 2px;
    user-select: none;
    list-style: none;
    border-radius: 14px;
    transition: background 0.3s;
}

.data-disclosure summary::-webkit-details-marker { display: none; }

.data-disclosure summary::before {
    content: 'B8';
    display: inline-block;
    margin-right: 10px;
    transition: transform 0.3s;
    color: var(--color-gold);
}

.data-disclosure[open] summary::before { transform: rotate(90deg); }

.data-disclosure summary:hover {
    background: rgba(255, 192, 224, 0.06);
    border-radius: 14px;
}

.disclosure-content {
    padding: 0 28px 24px;
    color: var(--color-text-soft);
    font-size: 14px;
    line-height: 1.95;
    letter-spacing: 0.5px;
    border-top: 1px dashed rgba(255, 192, 224, 0.18);
    margin: 0 22px;
    padding-top: 18px;
}

.disclosure-content p { margin-bottom: 12px; }

.disclosure-content strong {
    color: var(--color-gold);
    font-weight: 600;
    margin-right: 4px;
}

.disclosure-tip {
    margin-top: 16px !important;
    padding-top: 14px;
    border-top: 1px dashed rgba(255, 192, 224, 0.12);
    color: var(--color-gold-soft);
    font-size: 13px;
    font-style: italic;
    opacity: 0.85;
}

html[data-theme="light"] .disclosure-tip {
    color: var(--color-text-soft);
}

@media (max-width: 568px) {
    .data-disclosure summary { font-size: 14px; padding: 14px 18px; }
    .disclosure-content { padding: 16px 18px 18px; font-size: 13px; }
}

/* ==========================================
   减少动画偏好（可访问性）
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1; transform: none; }
}