/* ═══════════════════════════════════════════════════
   学行在线 — 九紫离火 · 东方雅韵 设计系统 v3.0
   紫气东来 · 离火炽盛 · 祥云瑞彩 · 水墨丹青
   ═══════════════════════════════════════════════════ */

/* ─── 设计令牌 (Design Tokens) ─── */
:root {
    /* 九紫离火核心色 */
    --cosmic-deep: #0B0614;
    --cosmic: #12081C;
    --cosmic-mid: #1A0D2E;
    --purple-royal: #4A154B;
    --purple-deep: #6B238E;
    --purple: #8B3AAF;
    --purple-light: #A855D4;

    /* 离火之色 */
    --fire-magenta: #C44D8C;
    --fire-rose: #D9468D;
    --fire-coral: #E8726A;
    --fire-amber: #F59E4B;

    /* 雅金之韵 (火生土) */
    --gold-warm: #E2B86C;
    --gold-soft: #D4A855;
    --gold-pale: #C9A25B;
    --gold-light: #F0D68A;

    /* 素白之墨 */
    --text-primary: #F2EAF8;
    --text-soft: #D4C5E2;
    --text-muted: #9B8AAA;
    --text-dim: #6B5A7A;

    /* 表面与边框 */
    --surface: rgba(30, 14, 50, 0.65);
    --surface-hover: rgba(45, 20, 70, 0.75);
    --surface-solid: #1A0D2E;
    --border-subtle: rgba(160, 100, 180, 0.12);
    --border-glow: rgba(200, 80, 150, 0.25);
    --border-gold: rgba(210, 170, 100, 0.2);

    /* 光效 */
    --glow-purple: 0 0 40px rgba(139, 58, 175, 0.15);
    --glow-magenta: 0 0 30px rgba(196, 77, 140, 0.2);
    --glow-gold: 0 0 20px rgba(226, 184, 108, 0.15);

    /* 状态色 */
    --danger: #F4726B;
    --success: #6BCB8A;
    --info: #8EB8F0;
    --warning: #F0B870;

    /* 圆角与阴影 */
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* 过渡 */
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─── 全局重置 ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: "Noto Serif SC", "Source Han Serif CN", "STSong", "Songti SC", Georgia, serif;
    background: var(--cosmic-deep);
    color: var(--text-primary);
    line-height: 1.75;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ─── 粒子Canvas背景 ─── */
#particleCanvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}
main, .header, .footer, .toast { position: relative; z-index: 1; }

/* ─── 星空光晕背景层 ─── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(107, 35, 142, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse 60% 70% at 80% 70%, rgba(196, 77, 140, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 50% 30%, rgba(226, 184, 108, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* ─── 滚动渐现动画 ─── */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}
/* 延迟交错 */
.course-card:nth-child(1) { transition-delay: 0.05s; }
.course-card:nth-child(2) { transition-delay: 0.1s; }
.course-card:nth-child(3) { transition-delay: 0.15s; }
.course-card:nth-child(4) { transition-delay: 0.2s; }
.course-card:nth-child(5) { transition-delay: 0.25s; }
.course-card:nth-child(6) { transition-delay: 0.3s; }
.feature-card:nth-child(1) { transition-delay: 0.05s; }
.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.15s; }
.feature-card:nth-child(4) { transition-delay: 0.2s; }
.feature-card:nth-child(5) { transition-delay: 0.25s; }
.feature-card:nth-child(6) { transition-delay: 0.3s; }
.category-card:nth-child(1) { transition-delay: 0s; }
.category-card:nth-child(2) { transition-delay: 0.06s; }
.category-card:nth-child(3) { transition-delay: 0.12s; }
.category-card:nth-child(4) { transition-delay: 0.18s; }
.category-card:nth-child(5) { transition-delay: 0.24s; }
.category-card:nth-child(6) { transition-delay: 0.3s; }

a { color: var(--gold-soft); text-decoration: none; transition: all 0.3s var(--ease-out); }
a:hover { color: var(--fire-rose); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ─── 排版系统 ─── */
h1, h2, h3, h4, h5, h6 {
    font-family: "Noto Serif SC", "Source Han Serif CN", "STSong", serif;
    font-weight: 600;
    letter-spacing: 0.03em;
    line-height: 1.4;
}

/* ─── 祥云分隔装饰线 ─── */
.ornament-divider {
    display: flex; align-items: center; justify-content: center;
    gap: 16px; margin: 0 auto 32px; max-width: 320px;
}
.ornament-divider::before,
.ornament-divider::after {
    content: '';
    flex: 1; height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm));
}
.ornament-divider::before { background: linear-gradient(270deg, transparent, var(--fire-magenta), var(--gold-warm)); }
.ornament-divider::after { background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm)); }
.ornament-diamond {
    width: 10px; height: 10px;
    background: var(--fire-rose);
    transform: rotate(45deg);
    opacity: 0.6;
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(196,77,140,0.4);
}

/* ═══════════ HEADER ═══════════ */
.header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(11, 6, 20, 0.85);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-bottom: 1px solid var(--border-subtle);
    transition: all 0.3s;
}
.header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
    opacity: 0.5;
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 68px;
}
.logo {
    display: flex; align-items: center; gap: 12px;
    font-size: 1.25rem; font-weight: 700;
    color: var(--text-primary); text-decoration: none;
    letter-spacing: 0.04em;
}
.logo-icon {
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    background: linear-gradient(135deg, rgba(139,58,175,0.35), rgba(212,168,85,0.15));
    border-radius: 12px;
    border: 1px solid var(--border-glow);
    position: relative;
}
.logo-icon::after {
    content: '';
    position: absolute; inset: -2px; border-radius: 14px;
    background: linear-gradient(135deg, var(--fire-magenta), transparent, var(--gold-warm));
    opacity: 0; transition: opacity 0.4s;
    z-index: -1;
}
.logo:hover .logo-icon::after { opacity: 0.3; }
.logo-text {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 8px 18px; border-radius: 20px;
    color: var(--text-soft); font-size: 0.9rem;
    transition: all 0.3s var(--ease-out);
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}
.nav-link:hover {
    color: var(--text-primary);
    background: rgba(139,58,175,0.12);
}
.nav-link.active {
    color: var(--fire-rose);
    background: rgba(217,70,141,0.08);
    font-weight: 600;
}
.nav-link.active::after {
    content: '';
    position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
    width: 6px; height: 6px;
    background: var(--fire-rose);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(217,70,141,0.5);
}

.nav-user { display: flex; align-items: center; gap: 10px; margin-left: 16px; padding-left: 16px; border-left: 1px solid var(--border-subtle); }
.nav-user-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), var(--fire-rose));
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem; color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    box-shadow: 0 0 16px rgba(196,77,140,0.3);
}
.nav-user-name { font-size: 0.9rem; color: var(--text-soft); font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }

.mobile-menu-btn { display: none; background: none; border: none; color: var(--text-soft); font-size: 1.5rem; cursor: pointer; width: 44px; height: 44px; border-radius: 12px; }
.mobile-menu-btn:hover { background: rgba(139,58,175,0.1); }
.mobile-nav {
    display: none;
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(18,8,28,0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 12px 16px;
    flex-direction: column; gap: 2px;
    z-index: 99;
    animation: slideDown 0.25s var(--ease-out);
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
.mobile-nav.show { display: flex; }
.mobile-nav a {
    padding: 14px 16px; border-radius: var(--radius-sm);
    color: var(--text-soft); font-size: 0.95rem;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.mobile-nav a:hover { background: rgba(139,58,175,0.1); color: var(--fire-rose); }

/* ═══════════ BUTTONS ═══════════ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 11px 26px; border-radius: 24px; font-size: 0.9rem;
    font-weight: 600; cursor: pointer; border: none; transition: all 0.3s var(--ease-out);
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    position: relative; overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%; width: 0; height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}
.btn:active::before { width: 300px; height: 300px; }
.btn-primary {
    background: linear-gradient(135deg, var(--fire-magenta) 0%, var(--purple-deep) 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(196,77,140,0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(196,77,140,0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-glow);
    color: var(--text-soft);
}
.btn-outline:hover {
    border-color: var(--fire-magenta);
    color: var(--fire-rose);
    box-shadow: 0 0 24px rgba(196,77,140,0.12);
}
.btn-sm { padding: 7px 18px; font-size: 0.82rem; border-radius: 20px; }
.btn-lg { padding: 15px 38px; font-size: 1rem; border-radius: 28px; }
.btn-block { width: 100%; }

/* ═══════════ HERO ═══════════ */
.hero {
    background: linear-gradient(180deg, var(--cosmic-deep) 0%, var(--cosmic) 35%, var(--cosmic-mid) 100%);
    padding: 100px 0 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -30%; left: 50%; transform: translateX(-50%);
    width: 900px; height: 900px;
    background:
        radial-gradient(ellipse at center, rgba(139,58,175,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 40%, rgba(196,77,140,0.08) 0%, transparent 40%);
    pointer-events: none;
    animation: heroPulse 8s ease-in-out infinite;
}
@keyframes heroPulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 1; }
    50% { transform: translateX(-50%) scale(1.1); opacity: 0.65; }
}
.hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 240px;
    background: linear-gradient(to top, var(--cosmic-mid), transparent);
    pointer-events: none;
}
.hero > .container { position: relative; z-index: 1; }
.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    background: linear-gradient(135deg, #F2EAF8 0%, #E8B4C8 20%, #D4A855 45%, #E8A0C0 70%, #F0E6F6 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: 0.08em;
    animation: titleShine 6s ease-in-out infinite;
    text-shadow: none;
    filter: drop-shadow(0 0 30px rgba(196,77,140,0.2));
}
@keyframes titleShine {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 200% center; }
}
.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-soft);
    margin-bottom: 16px;
    font-weight: 400;
    letter-spacing: 0.12em;
    position: relative;
    display: inline-block;
}
.hero-subtitle::before,
.hero-subtitle::after {
    content: '◇';
    position: relative;
    color: var(--fire-magenta);
    font-size: 0.5rem;
    top: -0.5em;
    opacity: 0.6;
    margin: 0 12px;
    animation: diamondPulse 2s ease-in-out infinite;
}
.hero-subtitle::after { animation-delay: 1s; }
@keyframes diamondPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.9; }
}
.hero-desc {
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto 40px;
    font-size: 0.95rem;
    line-height: 1.8;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.hero-actions {
    display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}

/* 统计条 */
.hero-stats {
    background: linear-gradient(180deg, rgba(18,8,28,0.5) 0%, rgba(18,8,28,0.85) 100%);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-subtle);
    margin-top: 80px;
    padding: 40px 0;
    position: relative;
    z-index: 1;
}
.hero-stats::before {
    content: '';
    position: absolute;
    top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item { padding: 12px; position: relative; }
.stat-item::after {
    content: '';
    position: absolute; right: 0; top: 20%; bottom: 20%;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--border-subtle), transparent);
}
.stat-item:last-child::after { display: none; }
.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--fire-rose), var(--gold-warm));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: Georgia, "Noto Serif SC", serif;
}
.stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 8px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    letter-spacing: 0.05em;
}

/* ═══════════ SECTIONS ═══════════ */
.section { padding: 90px 0; position: relative; }
.section-dark {
    background: linear-gradient(180deg, transparent 0%, rgba(26,13,46,0.35) 30%, rgba(26,13,46,0.5) 70%, transparent 100%);
}
.section-cta {
    background: linear-gradient(135deg, rgba(74,21,75,0.35) 0%, rgba(107,35,142,0.18) 50%, rgba(26,13,46,0.3) 100%);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
}
.section-cta::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(196,77,140,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-size: 0.95rem;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

/* ─── 祥云分隔符在section标题下 ─── */
.section-subtitle + .ornament-divider { margin-top: 0; }

/* ═══════════ CATEGORY GRID ═══════════ */
.category-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.category-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 16px;
    text-align: center;
    transition: all 0.4s var(--ease-out);
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}
.category-card::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, rgba(139,58,175,0.1) 0%, transparent 70%);
    opacity: 0; transition: opacity 0.4s;
}
.category-card::after {
    content: '';
    position: absolute; bottom: 0; left: 20%; right: 20%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), transparent);
    transform: scaleX(0); transition: transform 0.4s var(--ease-out);
}
.category-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(139,58,175,0.15), 0 0 0 1px rgba(196,77,140,0.12);
}
.category-card:hover::before { opacity: 1; }
.category-card:hover::after { transform: scaleX(1); }
.category-icon {
    font-size: 2.4rem;
    display: block;
    margin-bottom: 14px;
    position: relative; z-index: 1;
    transition: transform 0.3s var(--ease-spring);
}
.category-card:hover .category-icon { transform: scale(1.15); }
.category-name {
    font-size: 0.95rem;
    color: var(--text-soft);
    font-weight: 600;
    position: relative; z-index: 1;
}

/* ═══════════ COURSE CARDS ═══════════ */
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.course-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
    position: relative;
}
.course-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-8px);
    box-shadow: 0 24px 64px rgba(107,35,142,0.18), 0 0 0 1px rgba(196,77,140,0.1);
}
.course-card-image {
    height: 200px;
    display: flex; align-items: flex-start; justify-content: space-between;
    padding: 18px;
    position: relative; overflow: hidden;
}
/* 水墨晕染渐变 */
.course-card-image::before {
    content: '';
    position: absolute; inset: 0;
    background:
        linear-gradient(135deg, rgba(107,35,142,0.5) 0%, rgba(74,21,75,0.3) 25%, rgba(196,77,140,0.2) 55%, rgba(226,184,108,0.1) 100%),
        radial-gradient(ellipse at 70% 20%, rgba(196,77,140,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 30% 80%, rgba(139,58,175,0.15) 0%, transparent 40%);
}
/* 水墨纹理覆盖 */
.course-card-image::after {
    content: '';
    position: absolute; inset: 0;
    background:
        repeating-linear-gradient(45deg, transparent, transparent 8px, rgba(255,255,255,0.008) 8px, rgba(255,255,255,0.008) 9px);
    opacity: 0.5;
}
/* 各课程卡片独特色调 */
.course-card:nth-child(6n+1) .course-card-image::before {
    background: linear-gradient(135deg, rgba(196,77,140,0.45) 0%, rgba(107,35,142,0.3) 40%, rgba(74,21,75,0.2) 100%);
}
.course-card:nth-child(6n+2) .course-card-image::before {
    background: linear-gradient(135deg, rgba(139,58,175,0.45) 0%, rgba(74,21,75,0.35) 40%, rgba(196,77,140,0.2) 100%);
}
.course-card:nth-child(6n+3) .course-card-image::before {
    background: linear-gradient(135deg, rgba(226,184,108,0.25) 0%, rgba(196,77,140,0.25) 50%, rgba(107,35,142,0.25) 100%);
}
.course-card:nth-child(6n+4) .course-card-image::before {
    background: linear-gradient(135deg, rgba(168,85,212,0.4) 0%, rgba(196,77,140,0.2) 40%, rgba(226,184,108,0.15) 100%);
}
.course-card:nth-child(6n+5) .course-card-image::before {
    background: linear-gradient(135deg, rgba(74,21,75,0.5) 0%, rgba(139,58,175,0.3) 40%, rgba(196,77,140,0.15) 100%);
}
.course-card:nth-child(6n+6) .course-card-image::before {
    background: linear-gradient(135deg, rgba(196,77,140,0.35) 0%, rgba(74,21,75,0.4) 40%, rgba(226,184,108,0.2) 100%);
}

.course-card-category {
    background: rgba(11,6,20,0.65);
    backdrop-filter: blur(8px);
    padding: 5px 14px;
    border-radius: 16px;
    font-size: 0.75rem;
    color: var(--text-soft);
    position: relative; z-index: 2;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.course-card-level {
    padding: 5px 14px;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
    position: relative; z-index: 2;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    backdrop-filter: blur(8px);
}
.level-beginner { background: rgba(107,203,138,0.2); color: var(--success); border: 1px solid rgba(107,203,138,0.25); }
.level-intermediate { background: rgba(240,184,112,0.2); color: var(--warning); border: 1px solid rgba(240,184,112,0.25); }
.level-advanced { background: rgba(244,114,107,0.2); color: var(--danger); border: 1px solid rgba(244,114,107,0.25); }

.course-card-body { padding: 22px; }
.course-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.5;
}
.course-card-title a { color: var(--text-primary); }
.course-card-title a:hover { color: var(--fire-rose); }
.course-card-instructor {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.course-card-desc {
    font-size: 0.84rem;
    color: var(--text-dim);
    margin-bottom: 14px;
    line-height: 1.6;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.course-card-meta {
    display: flex; gap: 16px;
    font-size: 0.78rem; color: var(--text-muted);
    margin-bottom: 14px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.course-card-footer {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-subtle);
}
.course-card-price {
    font-size: 1.35rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--fire-rose), var(--gold-warm));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.course-card-price small { font-size: 0.75rem; color: var(--text-dim); text-decoration: line-through; margin-left: 6px; }

/* ═══════════ FEATURES ═══════════ */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 30%; right: 30%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.feature-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(107,35,142,0.12);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 22px;
    transition: transform 0.3s var(--ease-spring);
    filter: drop-shadow(0 0 12px rgba(196,77,140,0.2));
}
.feature-card:hover .feature-icon { transform: scale(1.12); }
.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.feature-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

/* ═══════════ FILTER BAR ═══════════ */
.filter-bar { margin-bottom: 36px; }
.filter-form {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
}
.filter-search {
    flex: 1; min-width: 200px;
    background: rgba(11,6,20,0.5);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 13px 22px;
    color: var(--text-soft);
    font-size: 0.9rem;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    transition: all 0.3s;
}
.filter-search::placeholder { color: var(--text-dim); }
.filter-search:focus { outline: none; border-color: var(--fire-magenta); box-shadow: 0 0 0 4px rgba(196,77,140,0.08); }
.filter-select {
    background: rgba(11,6,20,0.5);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 13px 18px;
    color: var(--text-soft);
    font-size: 0.85rem;
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    transition: all 0.3s;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239B8AAA' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}
.filter-select:focus { outline: none; border-color: var(--fire-magenta); }

/* ═══════════ BREADCRUMB ═══════════ */
.breadcrumb {
    font-size: 0.85rem; color: var(--text-muted); margin-bottom: 28px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--fire-rose); }

/* ═══════════ COURSE DETAIL ═══════════ */
.course-detail { display: grid; grid-template-columns: 1fr 380px; gap: 36px; align-items: start; }
.course-detail-header { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.course-detail-title {
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 14px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--gold-light) 50%, var(--text-soft) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.04em;
}
.course-detail-instructor { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 20px; }
.course-detail-meta {
    display: flex; flex-wrap: wrap; gap: 24px;
    color: var(--text-muted); font-size: 0.92rem;
    margin-bottom: 28px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.course-detail-desc {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 30px;
}
.course-detail-desc h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--fire-rose);
    position: relative;
    padding-left: 16px;
}
.course-detail-desc h3::before {
    content: '';
    position: absolute; left: 0; top: 4px; bottom: 4px;
    width: 3px;
    background: linear-gradient(180deg, var(--fire-magenta), var(--gold-warm));
    border-radius: 2px;
}
.course-detail-desc p {
    color: var(--text-soft);
    line-height: 2;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

/* ─── Booking Card ─── */
.booking-card {
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 30px;
    position: sticky; top: 88px;
    box-shadow: 0 12px 48px rgba(107,35,142,0.1);
}
.booking-card::before {
    content: '';
    position: absolute; top: -1px; left: 24px; right: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}
.booking-card-price { margin-bottom: 24px; text-align: center; }
.booking-price {
    font-size: 2.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--fire-rose), var(--gold-warm));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.booking-original-price { text-decoration: line-through; color: var(--text-dim); margin-left: 10px; font-size: 0.9rem; }
.booking-discount {
    display: inline-block;
    background: rgba(244,114,107,0.12);
    color: var(--danger);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-left: 8px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.booking-card-info { margin-bottom: 18px; }
.booking-card-info .info-row {
    display: flex; justify-content: space-between;
    padding: 11px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(160,100,180,0.08);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.booking-card hr { border: none; border-top: 1px solid var(--border-subtle); margin: 18px 0; }

.schedule-list { display: flex; flex-direction: column; gap: 12px; }
.schedule-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    transition: all 0.3s;
    background: rgba(11,6,20,0.3);
}
.schedule-item:hover { border-color: var(--border-glow); box-shadow: 0 0 24px rgba(139,58,175,0.1); }
.schedule-item.selected { border-color: var(--fire-magenta); background: rgba(196,77,140,0.08); }
.schedule-info strong { display: block; font-size: 0.92rem; margin-bottom: 4px; }
.schedule-info span { display: block; font-size: 0.78rem; color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.schedule-slots {
    font-size: 0.82rem; color: var(--success); margin-right: 8px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    font-weight: 600;
}
.schedule-action { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* ═══════════ BOOKING FORM ═══════════ */
.booking-form-container {
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 38px;
    position: relative;
}
.booking-form-container::before {
    content: '';
    position: absolute; top: -1px; left: 30px; right: 30px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}
.booking-summary {
    background: rgba(139,58,175,0.06);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 30px;
}
.summary-row {
    display: flex; justify-content: space-between;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-soft);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.summary-row span { color: var(--text-muted); }
.summary-row strong { color: var(--text-primary); }
.booking-total {
    text-align: right; font-size: 1.2rem;
    padding: 20px 0;
    border-top: 1px solid var(--border-subtle);
    margin-top: 20px;
}
.booking-total strong {
    background: linear-gradient(135deg, var(--fire-rose), var(--gold-warm));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.6rem;
    margin-left: 8px;
}

/* ═══════════ AUTH CARD ═══════════ */
.auth-card {
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    box-shadow: 0 20px 80px rgba(107,35,142,0.12);
    position: relative;
}
.auth-card::before {
    content: '';
    position: absolute; top: -1px; left: 30px; right: 30px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}

/* ═══════════ DASHBOARD ═══════════ */
.dashboard { display: grid; grid-template-columns: 280px 1fr; gap: 36px; align-items: start; }
.dashboard-sidebar {
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
}
.dashboard-user {
    padding: 30px;
    text-align: center;
    border-bottom: 1px solid var(--border-subtle);
    background: linear-gradient(180deg, rgba(139,58,175,0.08) 0%, transparent 100%);
}
.dashboard-avatar {
    width: 68px; height: 68px; border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), var(--fire-rose));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; font-weight: 700; color: #fff;
    margin: 0 auto 16px;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    box-shadow: 0 0 28px rgba(196,77,140,0.35);
}
.dashboard-user h3 { margin-bottom: 4px; font-size: 1.15rem; }
.dashboard-user p { font-size: 0.82rem; color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.dashboard-nav { padding: 10px; }
.dashboard-nav-item {
    display: block; padding: 14px 20px; border-radius: var(--radius);
    color: var(--text-muted); font-size: 0.9rem; transition: all 0.3s;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.dashboard-nav-item:hover, .dashboard-nav-item.active {
    background: rgba(196,77,140,0.08); color: var(--fire-rose);
}
.dashboard-main h2 { margin-bottom: 28px; font-size: 1.55rem; }

/* ─── Booking List ─── */
.booking-list { display: flex; flex-direction: column; gap: 18px; }
.booking-item {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all 0.3s;
}
.booking-item:hover { border-color: var(--border-glow); }
.booking-item-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.booking-item-header h4 { font-size: 1.15rem; margin-bottom: 4px; }
.booking-item-header p { font-size: 0.82rem; color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.booking-status { font-weight: 600; font-size: 0.82rem; padding: 5px 14px; border-radius: 16px; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.booking-item-info {
    display: flex; flex-wrap: wrap; gap: 20px;
    font-size: 0.85rem; color: var(--text-muted);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

/* ═══════════ ABOUT PAGE ═══════════ */
.about-page h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--text-primary), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-subtitle { color: var(--fire-rose); font-size: 1.15rem; margin-bottom: 48px; letter-spacing: 0.08em; }
.about-section { margin-bottom: 48px; }
.about-section h2 {
    font-size: 1.5rem;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
}
.about-section h2::after {
    content: '';
    position: absolute; bottom: -1px; left: 0;
    width: 60px; height: 2px;
    background: linear-gradient(90deg, var(--fire-magenta), var(--gold-warm));
    border-radius: 1px;
}
.about-section p { color: var(--text-soft); line-height: 2; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }
.about-features { display: flex; flex-direction: column; gap: 30px; }
.about-feature { display: flex; gap: 22px; align-items: flex-start; }
.about-feature-icon {
    font-size: 1.8rem; flex-shrink: 0; margin-top: 4px;
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(139,58,175,0.1);
    border-radius: 14px;
    border: 1px solid var(--border-subtle);
}
.about-feature h3 { font-size: 1.1rem; margin-bottom: 4px; }
.about-feature p { font-size: 0.9rem; color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }
.about-contact { display: flex; flex-direction: column; gap: 18px; }
.contact-item { display: flex; gap: 18px; align-items: flex-start; }
.contact-item span { font-size: 1.5rem; }
.contact-item strong { display: block; margin-bottom: 2px; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.contact-item p { font-size: 0.9rem; color: var(--text-muted); }

/* ═══════════ FORM ELEMENTS ═══════════ */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block; margin-bottom: 7px;
    font-size: 0.88rem; color: var(--text-soft); font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 14px 18px;
    background: rgba(11,6,20,0.5);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
    transition: all 0.3s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--fire-magenta);
    box-shadow: 0 0 0 4px rgba(196,77,140,0.08);
}
.form-group input:disabled { opacity: 0.4; cursor: not-allowed; }
.form-group textarea { resize: vertical; min-height: 90px; }
.form-group input[type="checkbox"], .form-group input[type="radio"] { width: auto; margin-right: 8px; accent-color: var(--fire-magenta); }

.alert { padding: 14px 18px; border-radius: var(--radius); font-size: 0.9rem; margin-bottom: 20px; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }
.alert-info { background: rgba(142,184,240,0.08); border: 1px solid rgba(142,184,240,0.2); color: var(--info); }
.alert-error { background: rgba(244,114,107,0.08); border: 1px solid rgba(244,114,107,0.2); color: var(--danger); }

/* ═══════════ TOAST ═══════════ */
.toast {
    position: fixed; top: 24px; right: 24px; z-index: 9999;
    padding: 16px 28px; border-radius: 24px;
    font-size: 0.9rem; font-weight: 500;
    transform: translateX(130%);
    transition: transform 0.4s var(--ease-spring);
    max-width: 400px;
    backdrop-filter: blur(20px);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.toast-show { transform: translateX(0); }
.toast-success { background: rgba(107,203,138,0.92); color: #fff; box-shadow: 0 8px 30px rgba(107,203,138,0.35); }
.toast-error { background: rgba(244,114,107,0.92); color: #fff; box-shadow: 0 8px 30px rgba(244,114,107,0.35); }

/* ═══════════ EMPTY STATE ═══════════ */
.empty-state {
    text-align: center; padding: 80px 20px; color: var(--text-muted);
}
.empty-state h3 { margin: 14px 0 10px; font-size: 1.2rem; }

/* ═══════════ PAGE HEADER ═══════════ */
.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 2rem; }
.page-header p { color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }

/* ═══════════ FOOTER ═══════════ */
.footer {
    background: linear-gradient(180deg, transparent 0%, rgba(18,8,28,0.75) 25%, var(--cosmic-mid) 100%);
    border-top: 1px solid var(--border-subtle);
    padding: 70px 0 36px;
    margin-top: auto;
    position: relative;
}
.footer::before {
    content: '';
    position: absolute; top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; margin-bottom: 48px; }
.footer-col h4 {
    font-size: 1.05rem; margin-bottom: 20px; color: var(--text-primary);
    position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
    content: '';
    position: absolute; bottom: 0; left: 0;
    width: 30px; height: 2px;
    background: var(--fire-magenta);
    border-radius: 1px;
}
.footer-col p, .footer-col a {
    display: block; color: var(--text-muted); font-size: 0.85rem;
    margin-bottom: 10px; line-height: 1.6;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.footer-col a:hover { color: var(--fire-rose); padding-left: 4px; }
.footer-bottom {
    text-align: center; padding-top: 28px;
    border-top: 1px solid var(--border-subtle);
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-dim); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1024px) {
    .course-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .course-detail { grid-template-columns: 1fr; }
    .booking-card { position: static; }
    .dashboard { grid-template-columns: 1fr; }
    .dashboard-sidebar { display: none; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; align-items: center; justify-content: center; }
    .hero { padding: 60px 0 0; }
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle::before, .hero-subtitle::after { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item::after { display: none; }
    .course-grid { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .filter-form { flex-direction: column; }
    .filter-search, .filter-select { width: 100%; }
    .hero-actions { flex-direction: column; align-items: center; }
    .section { padding: 56px 0; }
    .section-title { font-size: 1.6rem; }
    .course-detail-title { font-size: 1.6rem; }
    .about-page h1 { font-size: 1.8rem; }
}
/* ═══════════ 评价系统 ═══════════ */
.reviews-section { margin-top: 48px; }
.reviews-title { font-size: 1.3rem; margin-bottom: 24px; color: var(--text-primary); }

/* 评分概览 */
.reviews-summary {
    display: flex; gap: 40px; align-items: center;
    background: var(--surface); backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
    padding: 28px 32px; margin-bottom: 28px;
}
.reviews-score { text-align: center; min-width: 120px; }
.reviews-score-num {
    font-size: 3rem; font-weight: 900;
    background: linear-gradient(135deg, var(--fire-rose), var(--gold-warm));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; line-height: 1;
}
.reviews-score-count { font-size: 0.82rem; color: var(--text-muted); display: block; margin-top: 4px; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.reviews-bars { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.reviews-bar-row { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: var(--text-muted); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.reviews-bar-row span:first-child { width: 30px; text-align: right; }
.reviews-bar-row span:last-child { width: 24px; }
.reviews-bar-track { flex: 1; height: 8px; background: rgba(160,100,180,0.1); border-radius: 4px; overflow: hidden; }
.reviews-bar-fill { height: 100%; background: linear-gradient(90deg, var(--fire-rose), var(--gold-warm)); border-radius: 4px; transition: width 0.6s var(--ease-out); }

/* 星星 */
.stars { display: inline-flex; gap: 2px; }
.stars-lg .star { font-size: 1.2rem; }
.stars-md .star { font-size: 1rem; }
.stars-sm .star { font-size: 0.85rem; }
.star-full { color: #F59E4B; }
.star-half { color: #F59E4B; opacity: 0.5; }
.star-empty { color: var(--text-dim); }
.star-interactive { cursor: pointer; transition: transform 0.2s, color 0.2s; }
.star-interactive:hover { transform: scale(1.2); }

/* 评价列表 */
.review-item {
    background: var(--surface); backdrop-filter: blur(8px);
    border: 1px solid var(--border-subtle); border-radius: var(--radius);
    padding: 20px 24px; margin-bottom: 14px;
    transition: border-color 0.3s;
}
.review-item:hover { border-color: var(--border-glow); }
.review-header { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.review-user-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), var(--fire-rose));
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: #fff; font-size: 0.85rem;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}
.review-user-info strong { display: block; font-size: 0.9rem; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.review-date { margin-left: auto; font-size: 0.78rem; color: var(--text-dim); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.review-content { color: var(--text-soft); font-size: 0.92rem; line-height: 1.8; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }

/* 评价表单 */
.review-form {
    background: var(--surface); backdrop-filter: blur(12px);
    border: 1px solid var(--border-glow); border-radius: var(--radius-lg);
    padding: 28px; margin-top: 20px;
    position: relative;
}
.review-form::before {
    content: '';
    position: absolute; top: -1px; left: 24px; right: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fire-magenta), var(--gold-warm), transparent);
}
.review-form h4 { margin-bottom: 16px; font-size: 1.1rem; }
.review-form-stars { display: flex; gap: 6px; margin-bottom: 16px; }
.rfs { font-size: 2rem; color: var(--text-dim); cursor: pointer; transition: all 0.2s; user-select: none; }
.rfs:hover { transform: scale(1.2); }
.review-form textarea {
    width: 100%; padding: 14px 18px;
    background: rgba(11,6,20,0.5); border: 1px solid var(--border-subtle);
    border-radius: var(--radius); color: var(--text-primary);
    font-size: 0.9rem; resize: vertical; min-height: 80px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}
.review-form textarea:focus { outline: none; border-color: var(--fire-magenta); box-shadow: 0 0 0 3px rgba(196,77,140,0.08); }