:root {
    --bg-dark: #f8fcfd;
    --bg-darker: #eef5f8;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-solid: #ffffff;
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-sidebar: linear-gradient(180deg, #f0fafa 0%, #e0f4f4 100%);
    --border-color: rgba(0, 192, 195, 0.12);
    --border-light: rgba(0, 0, 0, 0.06);
    --text-primary: #1a1a2e;
    --text-secondary: rgba(30,50,55, 0.55);
    --text-muted: rgba(30,50,55, 0.35);
    --accent: #00c0c3;
    --accent-bright: #009a9d;
    --accent-glow: rgba(0, 192, 195, 0.2);
    --salmon: #ff635d;
    --salmon-glow: rgba(255, 99, 93, 0.2);
    --cyan: #00c0c3;
    --cyan-glow: rgba(0, 192, 195, 0.2);
    --orange: #f97316;
    --orange-glow: rgba(249, 115, 22, 0.2);
    --success: #059669;
    --success-dim: rgba(5, 150, 105, 0.08);
    --danger: #dc2626;
    --danger-dim: rgba(220, 38, 38, 0.08);
    --warning: #d97706;
    --warning-dim: rgba(217, 119, 6, 0.08);
    --gradient-main: linear-gradient(135deg, #00c0c3, #00a5a8, #22d3ee);
    --gradient-pink: linear-gradient(135deg, #ff635d, #ff8a85);
    --gradient-cyan: linear-gradient(135deg, #00c0c3, #22d3ee);
    --gradient-orange: linear-gradient(135deg, #f97316, #fb923c);
    --gradient-accent: linear-gradient(135deg, #f59e0b, #f97316);
    --gradient-success: linear-gradient(135deg, #059669, #10b981);
    --gradient-danger: linear-gradient(135deg, #dc2626, #ef4444);
    --gradient-rainbow: linear-gradient(135deg, #ff635d, #00c0c3, #f97316, #ffe48f);
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 40, 50, 0.06);
    --shadow-glow: 0 0 30px rgba(0, 192, 195, 0.08);
    --font-main: 'Noto Sans SC', 'Inter', -apple-system, sans-serif;
    --font-display: 'M PLUS Rounded 1c', 'Inter', 'Noto Sans SC', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    background-color: #f0f0f8;
    background-image:
        url('../img/deco/bg_light.png'),
        linear-gradient(45deg, rgba(0,192,195,0.24) 25%, transparent 25%, transparent 75%, rgba(0,192,195,0.24) 75%),
        linear-gradient(45deg, rgba(0,192,195,0.24) 25%, transparent 25%, transparent 75%, rgba(0,192,195,0.24) 75%),
        linear-gradient(rgba(255,99,93,0.18) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,192,195,0.18) 1px, transparent 1px);
    background-size: 77px 133px, 40px 40px, 40px 40px, 60px 60px, 60px 60px;
    background-position: center, 0 0, 20px 20px, 0 0, 0 0;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.server-error-banner {
    display: none;
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 9999;
    background: var(--gradient-danger);
    color: white;
    padding: 12px 20px;
    align-items: center; justify-content: center; gap: 15px;
    font-size: 14px;
    box-shadow: 0 4px 20px rgba(248, 113, 113, 0.4);
}
.server-error-banner i { font-size: 18px; animation: pulse 1.5s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }
@keyframes refreshSpin { 0%{transform:rotate(0)} 100%{transform:rotate(360deg)} }
.server-error-banner .btn-small {
    padding: 5px 15px; font-size: 12px;
    background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.4);
    color: white; border-radius: 6px; cursor: pointer; transition: all .3s;
}
.server-error-banner .btn-small:hover { background: rgba(255,255,255,0.3); }

.app-wrapper { min-height: 100vh; display: flex; flex-direction: column; }

.top-nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    transition: all .3s;
}
.top-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0,40,50, 0.06);
}
.nav-inner {
    max-width: 1400px; margin: 0 auto;
    padding: 0 32px;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.nav-brand {
    display: flex; align-items: center; gap: 12px;
    cursor: pointer; user-select: none;
}
.nav-brand i {
    font-size: 24px; color: var(--accent-bright);
    filter: drop-shadow(0 0 12px rgba(255,99,93,0.4)) drop-shadow(0 0 6px rgba(6,182,212,0.3));
}
.nav-brand span {
    font-family: var(--font-display);
    font-size: 18px; font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ff635d, #00c0c3, #22d3ee);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.nav-links {
    display: flex; align-items: center; gap: 4px;
}
.nav-link {
    display: flex; align-items: center; gap: 7px;
    padding: 8px 18px; border-radius: 10px;
    color: var(--text-secondary);
    font-size: 14px; font-weight: 500;
    cursor: pointer; transition: all .3s;
    text-decoration: none; user-select: none;
    font-family: var(--font-main);
}
.nav-link:hover { color: var(--text-primary); background: rgba(0,192,195,0.08); }
.nav-link.active {
    color: white; background: var(--gradient-main);
    box-shadow: 0 0 16px rgba(0,192,195,0.25), 0 0 4px rgba(0,192,195,0.15);
}
.nav-link i { font-size: 14px; }

.main-content {
    flex: 1;
    padding: 88px 48px 48px;
    max-width: 1400px; margin: 0 auto; width: 100%;
    position: relative; z-index: 1;
}

.section-header {
    display: flex; align-items: center; gap: 16px;
    margin-bottom: 32px; flex-wrap: wrap;
}
.section-header h1 {
    margin-bottom: 0;
    font-size: 28px;
    font-family: var(--font-display);
    font-weight: 900;
    letter-spacing: -0.5px;
}
.section-header .practice-header-info {
    display: flex; align-items: center; gap: 16px;
    margin-left: auto; flex-wrap: wrap;
}

.hero-section {
    text-align: center;
    padding: 60px 0 48px;
    position: relative;
}
.hero-badge {
    display: inline-block;
    padding: 6px 20px; border-radius: 30px;
    background: linear-gradient(135deg, rgba(255,99,93,0.08), rgba(0,192,195,0.08), rgba(6,182,212,0.08));
    border: 1px solid rgba(0,192,195,0.15);
    color: var(--accent-bright);
    font-size: 11px; font-weight: 700;
    letter-spacing: 2px;
    font-family: var(--font-display);
    margin-bottom: 20px;
    text-shadow: 0 0 8px rgba(0,192,195,0.1);
}
.hero-title {
    font-family: var(--font-display);
    font-size: 64px; font-weight: 900;
    letter-spacing: -2px; line-height: 1;
    margin-bottom: 16px; position: relative; display: inline-block;
    text-shadow: 0 0 40px rgba(255,99,93,0.15), 0 0 80px rgba(0,192,195,0.1), 0 0 120px rgba(6,182,212,0.06);
}
.hero-title::before {
    content: ''; position: absolute; top: -44px; left: 50%; transform: translateX(-50%);
    width: 40px; height: 40px;
    background: url('../img/deco/title_sun-r.webp') no-repeat center center / contain;
    animation: sunRotate 20s linear infinite; opacity: 1;
}
.hero-subtitle {
    font-size: 16px; color: var(--text-secondary);
    max-width: 500px; margin: 0 auto 32px;
    line-height: 1.6;
}
.hero-actions {
    display: flex; gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-secondary-actions {
    margin-top: 16px;
    display: flex; justify-content: center; gap: 10px;
}

.hero-scroll-indicator {
    display: inline-flex; flex-direction: column; align-items: center; gap: 0;
    margin-left: 12px; position: relative;
    width: 50px; height: 80px; vertical-align: middle;
}
.hero-scroll-indicator .scroll-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--salmon); position: absolute; top: 0; left: 50%;
    margin-left: -3.5px; z-index: 2; transition: all 0.3s;
}
.hero-scroll-indicator:hover .scroll-dot { top: calc(100% - 7px); }
.hero-scroll-indicator .scroll-line {
    position: absolute; left: 50%; width: 1px; top: 0; bottom: 0;
    background: var(--text-secondary); margin-left: 0;
}
.hero-scroll-indicator .scroll-line-fill {
    position: absolute; bottom: 0; left: 0; right: 0; height: 0;
    background: var(--salmon);
    animation: scrollLineAnim 3s ease-in-out reverse infinite;
}
.hero-scroll-indicator:hover .scroll-line-fill {
    animation: unset; height: 100%;
}
.hero-scroll-indicator .scroll-text {
    writing-mode: vertical-rl; font-size: 9px; letter-spacing: 2px;
    color: var(--text-secondary); font-weight: 600;
    position: absolute; right: 0; top: 0; bottom: 0;
    display: flex; justify-content: center; align-items: center;
    width: 20px; line-height: 1;
}
@keyframes scrollLineAnim {
    0% { height: 0; bottom: 0; }
    20%, 40% { height: 100%; bottom: 0; }
    60%, 100% { height: 0; bottom: 100%; }
}

.btn-sm {
    padding: 7px 16px; font-size: 12px; border-radius: 8px;
    opacity: 0.6; transition: opacity .3s;
}
.btn-sm:hover { opacity: 1; }
.btn-danger-solid {
    background: var(--gradient-danger); color: white; border: none;
    opacity: 1; transition: all .3s;
    box-shadow: 0 2px 10px rgba(220,38,38,0.2);
}
.btn-danger-solid:hover { opacity: 1; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(220,38,38,0.3); }

.stats-strip {
    display: flex; gap: 16px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.stat-pill {
    display: flex; align-items: center; gap: 14px;
    padding: 18px 28px;
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 60px;
    transition: all .3s;
}
.stat-pill:hover { transform: translateY(-2px); box-shadow: var(--shadow), var(--shadow-glow); }
.stat-pill:nth-child(1) { border-color: rgba(0,192,195,0.15); }
.stat-pill:nth-child(1):hover { box-shadow: 0 4px 24px rgba(0,40,50,0.06), 0 0 20px rgba(0,192,195,0.12); }
.stat-pill:nth-child(2) { border-color: rgba(249,115,22,0.15); }
.stat-pill:nth-child(2):hover { box-shadow: 0 4px 24px rgba(0,40,50,0.06), 0 0 20px rgba(249,115,22,0.12); }
.stat-pill:nth-child(3) { border-color: rgba(16,185,129,0.15); }
.stat-pill:nth-child(3):hover { box-shadow: 0 4px 24px rgba(0,40,50,0.06), 0 0 20px rgba(16,185,129,0.12); }
.stat-pill:nth-child(4) { border-color: rgba(255,99,93,0.15); }
.stat-pill:nth-child(4):hover { box-shadow: 0 4px 24px rgba(0,40,50,0.06), 0 0 20px rgba(255,99,93,0.12); }
.stat-icon-sm {
    width: 40px; height: 40px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: var(--gradient-main); color: white; font-size: 16px;
    box-shadow: 0 2px 12px rgba(0,192,195,0.2);
}
.stat-icon-sm.accent { background: var(--gradient-orange); box-shadow: 0 2px 12px rgba(249,115,22,0.2); }
.stat-icon-sm.green { background: var(--gradient-success); box-shadow: 0 2px 12px rgba(16,185,129,0.2); }
.stat-icon-sm.orange { background: var(--gradient-pink); box-shadow: 0 2px 12px rgba(255,99,93,0.2); }
.stat-icon-sm.purple { background: linear-gradient(135deg, #8b5cf6, #a78bfa); box-shadow: 0 2px 12px rgba(139,92,246,0.2); }
.stat-num {
    font-family: var(--font-display);
    font-size: 28px; font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
}
.stat-tag {
    font-size: 12px; color: var(--text-secondary);
    font-weight: 600; text-transform: uppercase;
    letter-spacing: 1px;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.bento-grid-single {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}
.bento-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    position: relative; overflow: hidden;
}
.bento-card::before {
    content: ''; position: absolute; top: -50%; right: -50%;
    width: 100%; height: 100%;
    background: radial-gradient(circle, rgba(0,192,195,0.05) 0%, transparent 60%);
    transition: all .4s;
}
.bento-card::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255,99,93,0.3), rgba(0,192,195,0.1), rgba(6,182,212,0.3), rgba(249,115,22,0.1));
    background-size: 300% 300%;
    animation: borderGradientShift 6s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    padding: 1.5px; opacity: 0; transition: opacity .4s;
    pointer-events: none;
}
.bento-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow), var(--shadow-glow);
    border-color: transparent;
}
.bento-card:hover::before { top: -30%; right: -30%; }
.bento-card:hover::after { opacity: 1; }
@keyframes borderGradientShift { 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }
.bento-wide { grid-column: span 2; }
.bento-icon {
    width: 44px; height: 44px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    background: var(--gradient-main); color: white; font-size: 18px;
    margin-bottom: 16px;
    box-shadow: 0 4px 14px rgba(0,192,195,0.2);
}
.bento-icon.accent { background: var(--gradient-orange); box-shadow: 0 4px 14px rgba(249,115,22,0.2); }
.bento-icon.green { background: var(--gradient-success); box-shadow: 0 4px 14px rgba(16,185,129,0.2); }
.bento-icon.red { background: var(--gradient-pink); box-shadow: 0 4px 14px rgba(255,99,93,0.2); }
.bento-icon.orange { background: var(--gradient-cyan); box-shadow: 0 4px 14px rgba(6,182,212,0.2); }
.bento-card h3 {
    font-family: var(--font-display);
    font-size: 17px; font-weight: 700;
    color: var(--text-primary); margin-bottom: 6px;
}
.bento-card p { font-size: 13px; color: var(--text-secondary); }
.bento-card .bank-chapters-container {
    margin-top: 12px;
}
.bento-card .bank-chapters-container .bank-chapter-group {
    background: rgba(0,192,195,0.04);
    border-color: rgba(0,192,195,0.1);
}
.bento-card .chapter-item {
    background: rgba(0,192,195,0.04);
    border-color: var(--border-light);
}

.btn-giant {
    padding: 18px 48px; font-size: 17px;
    border-radius: 16px;
    font-family: var(--font-display);
    font-weight: 700; letter-spacing: -0.2px;
    box-shadow: 0 6px 24px rgba(0,192,195,0.3), 0 0 0 1px rgba(0,192,195,0.1);
}
.btn-glass {
    padding: 18px 48px; font-size: 17px;
    border-radius: 16px;
    background: rgba(255,255,255,0.6);
    border: 1.5px solid rgba(0,192,195,0.15);
    color: var(--text-primary);
    cursor: pointer; font-weight: 600;
    font-family: var(--font-display);
    transition: all .3s;
    display: inline-flex; align-items: center; gap: 8px;
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.btn-glass:hover {
    background: rgba(255,255,255,0.8);
    border-color: rgba(255,99,93,0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(255,99,93,0.08), 0 0 0 1px rgba(0,192,195,0.1);
}
.btn-ghost {
    padding: 8px 16px; font-size: 14px;
    background: transparent; border: 1px solid var(--border-light);
    color: var(--text-secondary); border-radius: 10px;
    cursor: pointer; font-family: var(--font-main); font-weight: 500;
    transition: all .3s;
    display: inline-flex; align-items: center; gap: 6px;
}
.btn-ghost:hover { background: rgba(0,192,195,0.08); color: var(--text-primary); border-color: rgba(0,192,195,0.2); }

@media (max-width: 900px) {
    .bento-grid { grid-template-columns: 1fr; }
    .bento-wide { grid-column: span 1; }
    .hero-title { font-size: 40px; }
    .stats-strip { flex-direction: column; align-items: center; }
    .main-content { padding: 80px 20px 20px; }
    .nav-inner { padding: 0 16px; }
    .nav-link span { display: none; }
    .nav-link { padding: 8px 12px; }
}
@media (max-width: 600px) {
    .hero-title { font-size: 32px; }
    .hero-section { padding: 40px 0 32px; }
}

.page { display: none; animation: pageReveal .5s cubic-bezier(.16,1,.3,1); }
@keyframes pageReveal { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }
.page.active { display: block; }

.page h1 {
    margin-bottom: 36px;
    font-family: var(--font-display);
    font-size: 32px; font-weight: 900;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ff635d 0%, #00c0c3 30%, #22d3ee 60%, #f97316 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px; margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex; align-items: center; gap: 20px;
    box-shadow: var(--shadow);
    transition: all .4s cubic-bezier(.4,0,.2,1);
    position: relative; overflow: hidden;
}
.stat-card::before {
    content: ''; position: absolute; top: 0; right: 0;
    width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(255,99,93,0.06) 0%, rgba(0,192,195,0.04) 50%, transparent 70%);
    border-radius: 50%; transform: translate(30%, -30%);
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow), 0 0 24px rgba(0,192,195,0.08);
    border-color: rgba(0,192,195,0.2);
}

.stat-icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 22px; flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
    transition: transform .4s cubic-bezier(.34,1.56,.64,1);
}
.stat-card:hover .stat-icon { transform: scale(1.08) rotate(-3deg); }
.stat-card:nth-child(1) .stat-icon { background: var(--gradient-main); }
.stat-card:nth-child(2) .stat-icon { background: linear-gradient(135deg, #f59e0b, #f97316); }
.stat-card:nth-child(3) .stat-icon { background: var(--gradient-success); }
.stat-card:nth-child(4) .stat-icon { background: linear-gradient(135deg, #ff635d, #ff8a85); }

.stat-info { display: flex; flex-direction: column; }
.stat-value {
    font-family: var(--font-display);
    font-size: 32px; font-weight: 900;
    color: var(--text-primary); line-height: 1.1;
}
.stat-label { color: var(--text-secondary); font-size: 13px; font-weight: 500; margin-top: 2px; }

.quick-actions {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px; margin-bottom: 40px;
    box-shadow: var(--shadow);
    position: relative; overflow: hidden;
}
.quick-actions h2 {
    margin-bottom: 20px;
    font-family: var(--font-display);
    font-size: 18px; font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}
.action-buttons { display: flex; gap: 12px; flex-wrap: wrap; }

.chapter-stats {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
}
.chapter-stats h2 {
    margin-bottom: 20px;
    font-family: var(--font-display);
    font-size: 18px; font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}
.chapter-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
}
.chapter-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 18px;
    background: rgba(0,192,195,0.06);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: all .2s;
}
.chapter-item:hover {
    background: rgba(0,192,195,0.12);
    border-color: rgba(0,192,195,0.2);
}
.chapter-name {
    font-size: 14px; color: var(--text-primary);
    max-width: 200px; overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
    font-weight: 500;
}
.chapter-count {
    background: var(--gradient-main);
    color: white; padding: 3px 14px;
    border-radius: 20px; font-size: 12px;
    white-space: nowrap; flex-shrink: 0; font-weight: 700;
}

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 24px; border: none;
    border-radius: 12px; cursor: pointer;
    font-size: 14px; font-weight: 600;
    font-family: var(--font-main);
    transition: all .3s cubic-bezier(.4,0,.2,1);
    position: relative; overflow: hidden;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-primary {
    background: var(--gradient-main); color: white;
    box-shadow: 0 4px 16px rgba(0,192,195,0.3), 0 0 0 1px rgba(0,192,195,0.1);
}
.btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 24px rgba(0,192,195,0.5), 0 0 20px rgba(0,192,195,0.15);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--gradient-success); color: white;
    box-shadow: 0 4px 16px rgba(52,211,153,0.3);
}
.btn-success:hover:not(:disabled) {
    box-shadow: 0 6px 24px rgba(52,211,153,0.5);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--gradient-danger); color: white;
    box-shadow: 0 4px 16px rgba(248,113,113,0.3);
}
.btn-danger:hover:not(:disabled) {
    box-shadow: 0 6px 24px rgba(248,113,113,0.5);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(0,192,195,0.1);
    color: var(--accent-bright);
    border: 1px solid rgba(0,192,195,0.2);
}
.btn-secondary:hover:not(:disabled) {
    background: rgba(0,192,195,0.18);
    border-color: rgba(0,192,195,0.35);
}

.btn-block { width: 100%; justify-content: center; }
.btn-large {
    padding: 16px 48px; font-size: 16px;
    border-radius: 14px;
    font-family: var(--font-display);
    font-weight: 700; letter-spacing: -0.2px;
}
.btn-icon {
    width: 34px; height: 34px; padding: 0; border: none;
    background: transparent; cursor: pointer;
    color: var(--text-secondary); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: all .3s;
}
.btn-icon:hover { background: rgba(248,113,113,0.1); color: var(--danger); }

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; margin-bottom: 8px;
    font-weight: 600; color: var(--text-primary); font-size: 14px;
}
.form-control {
    width: 100%; padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px; font-size: 14px;
    font-family: var(--font-main);
    transition: all .3s;
    background: white;
    color: var(--text-primary);
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(0,192,195,0.1);
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; }
select.form-control {
    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='%238b6cf6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.import-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
    max-width: 600px;
}
.upload-area {
    border: 2px dashed rgba(0,192,195,0.2);
    border-radius: var(--radius-lg);
    padding: 50px; text-align: center;
    cursor: pointer; transition: all .3s;
    margin-bottom: 25px;
    background: rgba(0,192,195,0.03);
}
.upload-area:hover, .upload-area.dragover {
    border-color: var(--accent);
    background: rgba(0,192,195,0.08);
    box-shadow: 0 0 0 4px rgba(0,192,195,0.08);
}
.upload-area i {
    font-size: 48px;
    background: var(--gradient-main);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 15px; display: block;
}
.upload-area p { color: var(--text-secondary); margin: 5px 0; }
.upload-area .hint { font-size: 12px; color: var(--text-muted); }
.upload-area .hint small { color: var(--text-muted); }

.selected-file {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 16px;
    background: rgba(0,192,195,0.08);
    border: 1px solid rgba(0,192,195,0.15);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}
.selected-file i { color: var(--accent); font-size: 24px; }
.selected-file span { flex: 1; color: var(--text-primary); }

.import-progress { margin-top: 20px; }
.progress-bar {
    height: 6px;
    background: rgba(0,192,195,0.1);
    border-radius: 3px; overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--gradient-main);
    width: 0%;
    animation: progress 2s ease-in-out infinite;
    border-radius: 3px;
    position: relative;
}
@keyframes progress { 0%{width:0} 50%{width:70%} 100%{width:100%} }
.progress-text { text-align: center; margin-top: 10px; color: var(--text-secondary); }

.import-result { margin-top: 20px; padding: 16px; border-radius: var(--radius-sm); }
.import-result.success {
    background: var(--success-dim);
    color: var(--success);
    border: 1px solid rgba(52,211,153,0.2);
}
.import-result.error {
    background: var(--danger-dim);
    color: var(--danger);
    border: 1px solid rgba(248,113,113,0.2);
}

.manage-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
}
.bank-list { display: grid; gap: 12px; }

.bank-card {
    display: flex; align-items: center; justify-content: space-between;
    padding: 22px;
    background: white;
    border-radius: var(--radius);
    transition: all .3s cubic-bezier(.4,0,.2,1);
    border: 1px solid var(--border-light);
}
.bank-card:hover {
    box-shadow: var(--shadow), var(--shadow-glow);
    border-color: rgba(0,192,195,0.2);
    transform: translateX(4px);
}
.bank-info { flex: 1; cursor: pointer; }
.bank-name { font-size: 16px; font-weight: 700; margin-bottom: 3px; color: var(--text-primary); }
.bank-semester { font-size: 12px; color: var(--accent-bright); font-weight: 600; margin-bottom: 5px; }
.bank-meta { font-size: 12px; color: var(--text-secondary); }
.bank-stats { display: flex; align-items: center; gap: 20px; }
.bank-count {
    background: rgba(0,192,195,0.1);
    color: var(--accent-bright);
    padding: 5px 16px; border-radius: 20px;
    font-size: 13px; font-weight: 700;
    border: 1px solid rgba(0,192,195,0.15);
}
.bank-actions { display: flex; gap: 10px; }

.browser-header {
    display: flex; align-items: center; gap: 20px; margin-bottom: 20px;
}
.browser-header h2 { margin: 0; color: var(--text-primary); }
.filter-bar {
    display: flex; gap: 15px; margin-bottom: 20px;
}
.filter-bar select {
    padding: 8px 15px;
    border: 2px solid rgba(0,192,195,0.15);
    border-radius: 10px;
    background: white;
    color: var(--text-primary);
    font-family: var(--font-main);
    transition: border-color .3s;
}
.filter-bar select:focus { border-color: var(--accent); }
.filter-bar .inline-toggle {
    display: flex; align-items: center; gap: 6px;
    font-size: 14px; color: var(--text-secondary);
}
.filter-bar .inline-toggle input { margin: 0; accent-color: var(--accent); }

.question-list { display: grid; gap: 12px; }
.question-item {
    padding: 22px;
    background: white;
    border-radius: var(--radius);
    border-left: 4px solid var(--accent);
    transition: all .2s;
}
.question-item:hover { box-shadow: var(--shadow); }
.question-item.multi { border-left-color: var(--warning); }

.question-header {
    display: flex; align-items: center; gap: 10px; margin-bottom: 10px;
}
.question-type {
    font-size: 12px; padding: 3px 10px; border-radius: 6px;
    background: var(--gradient-main); color: white; font-weight: 600;
}
.question-type.multi { background: linear-gradient(135deg, #f59e0b, #f97316); }
.question-type.judge { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.question-id-badge {
    font-size: 11px; color: var(--text-muted);
    background: rgba(0,192,195,0.08);
    padding: 2px 8px; border-radius: 6px;
    font-family: var(--font-mono); letter-spacing: .5px;
}
.question-chapter { font-size: 12px; color: var(--text-secondary); }
.question-content { font-size: 15px; margin-bottom: 15px; line-height: 1.8; color: var(--text-primary); }
.question-options { display: grid; gap: 8px; margin-bottom: 15px; }

.option-item {
    padding: 10px 14px;
    background: rgba(0,192,195,0.04);
    border-radius: var(--radius-sm); font-size: 14px;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
}
.option-item.correct-answer {
    background: var(--success-dim);
    border-left: 3px solid var(--success);
}
.option-item.wrong-answer {
    background: var(--danger-dim);
    border-left: 3px solid var(--danger);
}
.question-answer { font-size: 14px; color: var(--success); font-weight: 600; }
.question-actions {
    display: flex; gap: 10px; margin-top: 15px;
    padding-top: 15px; border-top: 1px solid var(--border-light);
}

.practice-settings {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    display: flex; flex-direction: column; gap: 20px;
    max-width: 1000px;
}
.settings-card {
    padding: 20px;
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    transition: all .3s;
}
.settings-card:hover {
    border-color: rgba(0,192,195,0.2);
    box-shadow: var(--shadow);
}
.settings-card h3 {
    margin-bottom: 14px;
    font-size: 12px; color: var(--accent-bright);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: var(--font-display);
}
.practice-settings > .btn { grid-column: 1 / -1; justify-self: center; }

.question-config, .timer-config { display: flex; flex-direction: column; gap: 12px; }
.config-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.config-row label { font-size: 14px; color: var(--text-primary); }
.config-row input[type="number"] { width: 80px; }
.config-row input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; accent-color: var(--accent); }

.stats-preview .preview-content { font-size: 14px; color: var(--text-secondary); }
.stats-preview .preview-content p { margin-bottom: 8px; }
.stats-preview .preview-content span { color: var(--accent-bright); font-weight: 700; }

.timer-display {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px;
    background: rgba(0,192,195,0.1);
    border: 1px solid rgba(0,192,195,0.15);
    border-radius: 24px;
    font-size: 16px; font-weight: 700;
    color: var(--accent-bright);
    font-family: var(--font-mono);
}
.timer-display i { color: var(--accent); }
.timer-display.warning {
    background: var(--danger-dim);
    color: var(--danger);
    border-color: rgba(248,113,113,0.2);
    animation: pulse 1s ease-in-out infinite;
}
.timer-display.warning i { color: var(--danger); }

.practice-area { max-width: 800px; }
.practice-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 20px; padding: 16px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.score-info { display: flex; gap: 20px; }
.correct-count { color: var(--success); font-weight: 600; }
.wrong-count { color: var(--danger); font-weight: 600; }

.question-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.question-card .question-header { margin-bottom: 20px; }
.question-card .question-content { font-size: 18px; margin-bottom: 24px; line-height: 1.8; }

.question-content.text-sm { font-size: 15px; line-height: 1.6; }
.question-content.text-xs { font-size: 14px; line-height: 1.5; }
.question-content.text-xxs { font-size: 13px; line-height: 1.4; }
.question-content.text-micro { font-size: 12px; line-height: 1.3; }

.option-text.text-sm { font-size: 14px; }
.option-text.text-xs { font-size: 13px; }
.option-text.text-xxs { font-size: 12px; }

.options-list { display: grid; gap: 10px; }

.option-btn {
    display: flex; align-items: center; gap: 14px;
    padding: 16px 20px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    text-align: left; font-size: 15px;
    font-family: var(--font-main);
    color: var(--text-primary);
}
.option-btn:hover:not(.disabled) {
    border-color: var(--accent);
    background: rgba(0,192,195,0.08);
    box-shadow: 0 0 0 4px rgba(0,192,195,0.06);
    transform: translateX(4px);
}
.option-btn.selected {
    border-color: var(--accent);
    background: rgba(0,192,195,0.1);
}
.option-btn.correct {
    border-color: var(--success);
    background: var(--success-dim);
}
.option-btn.wrong {
    border-color: var(--danger);
    background: var(--danger-dim);
}
.option-btn.disabled { cursor: default; }

.option-key {
    width: 32px; height: 32px;
    border-radius: 10px;
    background: rgba(0,192,195,0.1);
    border: 1px solid rgba(0,192,195,0.15);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; flex-shrink: 0;
    color: var(--accent-bright);
    font-size: 14px;
    font-family: var(--font-display);
    transition: all .3s;
}
.option-btn.selected .option-key { background: var(--gradient-main); color: white; border-color: transparent; }
.option-btn.correct .option-key { background: var(--gradient-success); color: white; border-color: transparent; }
.option-btn.wrong .option-key { background: var(--gradient-danger); color: white; border-color: transparent; }

.answer-result {
    margin-top: 16px; padding: 14px;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; gap: 10px;
    font-weight: 500;
}
.answer-result.correct {
    background: var(--success-dim);
    color: var(--success);
    border: 1px solid rgba(52,211,153,0.2);
}
.answer-result.wrong {
    background: var(--danger-dim);
    color: var(--danger);
    border: 1px solid rgba(248,113,113,0.2);
}
.answer-result i { font-size: 22px; }
.practice-actions { display: flex; justify-content: center; gap: 12px; }

.practice-result {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow);
    text-align: center; max-width: 500px;
}
.practice-result h2 {
    margin-bottom: 30px;
    background: var(--gradient-success);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    font-size: 28px; font-family: var(--font-display); font-weight: 900;
}
.result-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px; margin-bottom: 30px;
}
.result-item {
    padding: 22px;
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
}
.result-item.correct .result-value { color: var(--success); }
.result-item.wrong .result-value { color: var(--danger); }
.result-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; font-weight: 500; }
.result-value {
    font-size: 30px; font-weight: 900;
    font-family: var(--font-display);
    color: var(--text-primary);
}
.result-actions { display: flex; justify-content: center; gap: 12px; }

.settings-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    max-width: 600px;
}
.setting-item { padding: 20px 0; border-bottom: 1px solid var(--border-light); }
.setting-item:last-child { border-bottom: none; }
.setting-item h3 { margin-bottom: 8px; font-size: 16px; }
.setting-desc { color: var(--text-secondary); font-size: 13px; margin-bottom: 15px; }
.setting-control { display: flex; gap: 10px; }
.setting-control .form-control { flex: 1; }
.setting-actions { display: flex; gap: 15px; padding-top: 20px; }

.toast-container {
    position: fixed; top: 20px; right: 20px;
    z-index: 1000;
    display: flex; flex-direction: column; gap: 10px;
}
.toast {
    padding: 14px 20px;
    border-radius: var(--radius);
    background: var(--bg-card-solid);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    display: flex; align-items: center; gap: 12px;
    animation: slideIn .4s cubic-bezier(.4,0,.2,1);
    min-width: 280px;
    border: 1px solid var(--border-color);
}
@keyframes slideIn { from{transform:translateX(100%) scale(.9);opacity:0} to{transform:translateX(0) scale(1);opacity:1} }
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast i { font-size: 20px; }
.toast.success i { color: var(--success); }
.toast.error i { color: var(--danger); }
.toast.warning i { color: var(--warning); }

.modal {
    display: none;
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,40,50, 0.3);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    z-index: 1001;
    align-items: center; justify-content: center;
}
.modal.show { display: flex; }
.modal-content {
    background: var(--bg-card-solid);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 400px; width: 90%;
    animation: modalIn .3s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-content.modal-large { max-width: 600px; }
@keyframes modalIn { from{transform:scale(.9) translateY(20px);opacity:0} to{transform:scale(1) translateY(0);opacity:1} }
.modal-content h3 { margin-bottom: 15px; font-weight: 700; color: var(--text-primary); }
.modal-content p { color: var(--text-secondary); margin-bottom: 25px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }

.edit-form .form-group { margin-bottom: 15px; }
.edit-form textarea, .edit-form input[type="text"] {
    width: 100%; padding: 10px;
    border: 2px solid rgba(0,192,195,0.15);
    border-radius: 10px; font-size: 14px;
    background: white;
    color: var(--text-primary);
    font-family: var(--font-main);
}
.edit-form select {
    width: 100%; padding: 10px;
    border: 2px solid rgba(0,192,195,0.15);
    border-radius: 10px;
    background: white;
    color: var(--text-primary);
}
#edit-options .option-edit { display: flex; gap: 10px; margin-bottom: 10px; }
#edit-options .option-edit input { flex: 1; }
#edit-options .option-edit span { width: 30px; display: flex; align-items: center; justify-content: center; font-weight: 700; }

.empty-state {
    text-align: center; padding: 60px 20px;
    color: var(--text-secondary);
}
.empty-state i { font-size: 64px; margin-bottom: 20px; opacity: .2; }
.empty-state p { font-size: 16px; margin-bottom: 20px; }

@media (max-width: 768px) {
    .main-content { margin-left: 0; padding: 20px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .practice-settings { grid-template-columns: 1fr; }
    .bank-card { flex-direction: column; align-items: flex-start; gap: 15px; }
    .bank-stats { width: 100%; justify-content: space-between; }
}

.practice-layout { display: flex; gap: 20px; align-items: flex-start; }
.practice-main { flex: 1; min-width: 600px; }

.side-panels {
    width: 300px; min-width: 300px; max-width: 300px;
    flex-shrink: 0; flex-grow: 0;
    display: flex; flex-direction: column; gap: 12px;
    position: sticky; top: 20px;
    max-height: calc(100vh - 140px); overflow-y: auto;
}

.side-panel {
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.ranking-panel {
    width: 300px; min-width: 300px; max-width: 300px;
    flex-shrink: 0; flex-grow: 0;
    background: var(--bg-card);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: sticky; top: 20px;
    max-height: calc(100vh - 140px);
    display: flex; flex-direction: column;
}
.ranking-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-light);
    background: var(--gradient-main);
    border-radius: var(--radius) var(--radius) 0 0;
}
.ranking-header h3 {
    color: white; font-size: 15px;
    display: flex; align-items: center; gap: 8px; font-weight: 700;
}
.ranking-header h3 i { color: #fbbf24; }
.ranking-header .btn-small {
    padding: 5px 10px; font-size: 12px;
    background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.3);
    color: white; border-radius: 6px; cursor: pointer; transition: all .3s;
}
.ranking-header .btn-small:hover { background: rgba(248,113,113,0.8); }
.ranking-list { flex: 1; overflow-y: auto; padding: 10px; }
.empty-ranking { text-align: center; padding: 40px 20px; color: var(--text-secondary); font-size: 14px; }

.ranking-item {
    display: flex; align-items: center;
    padding: 10px 14px; border-radius: 10px; margin-bottom: 4px;
    background: white;
    transition: all .2s cubic-bezier(.4,0,.2,1);
    gap: 10px; border: 1px solid transparent;
}
.ranking-item:hover { transform: translateX(3px); box-shadow: var(--shadow); }
.ranking-item.top-1 { background: rgba(251,191,36,0.08); border: 1px solid rgba(251,191,36,0.2); }
.ranking-item.top-2 { background: rgba(156,163,175,0.08); border: 1px solid rgba(156,163,175,0.15); }
.ranking-item.top-3 { background: rgba(251,146,60,0.08); border: 1px solid rgba(251,146,60,0.15); }

.ranking-rank {
    width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px; font-weight: 800; font-size: 11px; flex-shrink: 0;
    background: rgba(0,192,195,0.1);
    color: var(--accent-bright);
    font-family: var(--font-display);
}
.ranking-item.top-1 .ranking-rank { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #78350f; }
.ranking-item.top-2 .ranking-rank { background: linear-gradient(135deg, #9ca3af, #d1d5db); color: #374151; }
.ranking-item.top-3 .ranking-rank { background: linear-gradient(135deg, #fb923c, #f97316); color: #7c2d12; }

.ranking-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ranking-name { font-weight: 700; font-size: 13px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ranking-meta { font-size: 11px; color: var(--text-secondary); }
.ranking-accuracy { font-size: 14px; font-weight: 800; color: var(--accent-bright); flex-shrink: 0; font-family: var(--font-display); }

@media (max-width: 1200px) {
    .practice-layout { flex-direction: column; align-items: center; }
    .practice-main { width: 100%; min-width: 0; }
    .ranking-panel, .side-panels { width: 300px; min-width: 300px; max-width: 300px; position: static; max-height: 400px; }
}

.practice-mode-badge {
    display: inline-block; padding: 3px 10px;
    border-radius: 6px; font-size: 12px; font-weight: 700; margin-left: 10px;
}
.practice-mode-badge.exam { background: var(--gradient-danger); color: white; }
.practice-mode-badge.practice, .practice-mode-badge.random { background: var(--gradient-main); color: white; }
.practice-mode-badge.sequence { background: var(--gradient-success); color: white; }
.practice-mode-badge.wrong { background: linear-gradient(135deg, #ff635d, #ff8a85); color: white; }

.collapsible-panel { background: var(--bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.collapsible-panel:not(.side-panel) { margin-bottom: 12px; }
.collapsible-panel .panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 16px; cursor: pointer; user-select: none; transition: background .2s;
}
.collapsible-panel .panel-header:hover { background: rgba(0,192,195,0.04); }
.collapsible-panel .panel-header h3, .collapsible-panel .panel-header > span {
    font-size: 14px; font-weight: 700; color: var(--text-primary);
    display: flex; align-items: center; gap: 8px; margin: 0;
}
.collapsible-panel .panel-header-right { display: flex; align-items: center; gap: 10px; }
.collapsible-panel .toggle-icon { color: var(--text-secondary); font-size: 12px; transition: transform .3s; }
.collapsible-panel.collapsed .toggle-icon { transform: rotate(-90deg); }
.collapsible-panel .panel-content {
    padding: 0 16px 16px; max-height: 500px; overflow-y: auto;
    transition: max-height .3s, padding .3s, opacity .3s;
}
.collapsible-panel.collapsed .panel-content { max-height: 0; padding-top: 0; padding-bottom: 0; opacity: 0; overflow: hidden; }

.question-nav-panel { }
.nav-stats { font-size: 13px; color: var(--text-secondary); font-weight: 600; }
.question-nav-grid { display: flex; flex-wrap: wrap; gap: 5px; justify-content: center; }

.nav-btn {
    width: 30px; height: 30px;
    border-radius: 8px;
    border: 2px solid var(--border-light);
    background: white;
    cursor: pointer; font-size: 11px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s;
    color: var(--text-secondary);
    font-family: var(--font-display);
}
.nav-btn:hover { border-color: var(--accent); background: rgba(0,192,195,0.1); color: var(--accent-bright); }
.nav-btn.current { border-color: var(--accent); background: var(--gradient-main); color: white; box-shadow: 0 2px 8px var(--accent-glow); }
.nav-btn.selected { border-color: var(--accent); background: rgba(0,192,195,0.1); color: var(--accent-bright); }
.nav-btn.selected.current { background: var(--gradient-main); color: white; }
.nav-btn.answered.correct { border-color: var(--success); background: var(--success-dim); color: var(--success); }
.nav-btn.answered.correct.current { background: var(--gradient-success); color: white; }
.nav-btn.answered.wrong { border-color: var(--danger); background: var(--danger-dim); color: var(--danger); }
.nav-btn.answered.wrong.current { background: var(--gradient-danger); color: white; }
.nav-btn.answered { border-color: var(--accent); background: rgba(0,192,195,0.1); color: var(--accent-bright); }
.nav-btn.answered.current { background: var(--gradient-main); color: white; }

.nav-section { margin-bottom: 15px; }
.nav-section-title {
    font-size: 13px; font-weight: 700; color: var(--accent-bright);
    margin-bottom: 8px; padding: 4px 10px;
    background: rgba(0,192,195,0.1); border-radius: 6px; display: inline-block;
}
.nav-section-title.multi { color: #fbbf24; background: var(--warning-dim); }
.nav-section-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.nav-page-break { width: 100%; height: 1px; background: var(--border-light); margin: 10px 0; }

.nav-pagination {
    display: flex; justify-content: center; align-items: center; gap: 4px;
    margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--border-light);
}
.nav-page-btn {
    width: 28px; height: 28px;
    border: 1px solid var(--border-light); background: white;
    border-radius: 6px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary); transition: all .2s;
}
.nav-page-btn:hover:not(.disabled) { border-color: var(--accent); color: var(--accent-bright); }
.nav-page-btn.disabled { opacity: .4; cursor: not-allowed; }
.nav-page-num {
    min-width: 28px; height: 28px; padding: 0 6px;
    border: 1px solid var(--border-light); background: white;
    border-radius: 6px; cursor: pointer; font-size: 12px; font-weight: 600;
    color: var(--text-secondary); transition: all .2s;
}
.nav-page-num:hover { border-color: var(--accent); color: var(--accent-bright); }
.nav-page-num.active { background: var(--gradient-main); border-color: var(--accent); color: white; }

.nav-btn.multi { border-color: rgba(251,191,36,0.3); }
.nav-btn.multi.selected { border-color: var(--accent); background: rgba(0,192,195,0.1); color: var(--accent-bright); }
.nav-btn.multi.answered.correct { border-color: var(--success); background: var(--success-dim); color: var(--success); }
.nav-btn.multi.answered.wrong { border-color: var(--danger); background: var(--danger-dim); color: var(--danger); }
.nav-btn.multi.answered { border-color: var(--accent); background: rgba(0,192,195,0.1); color: var(--accent-bright); }
.nav-btn.multi.current { border-color: var(--warning); background: linear-gradient(135deg, #f59e0b, #f97316); color: white; }
.nav-btn.multi.answered.correct.current { background: var(--gradient-success); color: white; }
.nav-btn.multi.answered.wrong.current { background: var(--gradient-danger); color: white; }

.result-detail-section { margin-top: 25px; padding-top: 20px; border-top: 1px solid var(--border-light); }
.result-detail-section h3 { margin-bottom: 15px; font-size: 16px; font-weight: 700; color: var(--text-primary); }
.result-nav-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.result-nav-btn {
    width: 32px; height: 32px;
    border-radius: 8px; border: 2px solid var(--border-light);
    background: white; cursor: pointer;
    font-size: 12px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s; color: var(--text-secondary);
}
.result-nav-btn:hover { transform: scale(1.1); }
.result-nav-btn.correct { border-color: var(--success); background: var(--success-dim); color: var(--success); }
.result-nav-btn.wrong { border-color: var(--danger); background: var(--danger-dim); color: var(--danger); }
.result-nav-btn.current { transform: scale(1.15); box-shadow: 0 0 0 3px var(--accent-glow); }

.result-question-detail {
    background: white;
    border-radius: var(--radius); padding: 22px;
    border: 1px solid var(--border-light);
}
.result-question-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.result-question-status { padding: 3px 10px; border-radius: 6px; font-size: 12px; font-weight: 700; }
.result-question-status.correct { background: var(--success-dim); color: var(--success); }
.result-question-status.wrong { background: var(--danger-dim); color: var(--danger); }
.result-question-content { font-size: 15px; line-height: 1.6; margin-bottom: 15px; color: var(--text-primary); }
.result-options-list { display: grid; gap: 8px; margin-bottom: 15px; }
.result-option {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px;
    background: rgba(0,192,195,0.04);
    border-radius: var(--radius-sm); border: 2px solid transparent;
    font-size: 14px; color: var(--text-primary);
}
.result-option.user-selected { border-color: var(--accent); }
.result-option.correct-answer { background: var(--success-dim); border-color: var(--success); }
.result-option.wrong-answer { background: var(--danger-dim); border-color: var(--danger); }
.result-option-key {
    width: 24px; height: 24px; border-radius: 8px;
    background: rgba(0,192,195,0.1);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px; flex-shrink: 0; color: var(--accent-bright);
}
.result-option.correct-answer .result-option-key { background: var(--gradient-success); color: white; }
.result-option.wrong-answer .result-option-key { background: var(--gradient-danger); color: white; }
.result-answer-info { display: flex; gap: 20px; font-size: 13px; color: var(--text-secondary); }
.result-answer-info span { display: flex; align-items: center; gap: 5px; }
.result-answer-info .your-answer { color: var(--accent-bright); }
.result-answer-info .correct-answer { color: var(--success); }

.ranking-panel .question-nav-panel { margin-top: 20px; border-top: 1px solid var(--border-light); padding-top: 15px; }

.bank-chapters-container { display: flex; flex-direction: column; gap: 16px; }
.bank-chapter-group {
    background: rgba(245, 243, 255, 0.5);
    border-radius: var(--radius); padding: 22px;
    border: 1px solid var(--border-color);
}
.bank-chapter-group .bank-title {
    display: flex; align-items: center; gap: 10px;
    font-size: 16px; font-weight: 700; color: var(--text-primary);
    margin-bottom: 15px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}
.bank-chapter-group .bank-title .bank-count {
    font-size: 12px;
    background: rgba(0,192,195,0.1);
    color: var(--accent-bright);
    padding: 4px 12px; border-radius: 20px; font-weight: 700;
}
.bank-chapter-group .chapter-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }

.practice-settings { display: flex; flex-direction: column; gap: 20px; }
.settings-row-top { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; }
.settings-row-bottom { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 15px; }
.practice-start-btn { display: flex; justify-content: center; padding-top: 10px; }
.practice-start-btn .btn-large { min-width: 220px; }

.progress-list { display: flex; flex-direction: column; gap: 8px; max-height: 200px; overflow-y: auto; }
.progress-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 12px;
    background: white;
    border-radius: var(--radius-sm); font-size: 13px;
    transition: all .2s; cursor: pointer;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
}
.progress-item:hover { background: rgba(0,192,195,0.08); border-color: rgba(0,192,195,0.2); }
.progress-item .mode-name { font-weight: 600; }
.progress-item .progress-info { color: var(--text-secondary); font-size: 12px; }
.progress-item .progress-actions { display: flex; gap: 5px; }
.progress-item .progress-actions button { padding: 4px 8px; font-size: 11px; }
.empty-progress { text-align: center; color: var(--text-secondary); padding: 20px; font-size: 13px; }
.wrong-count-badge { background: var(--gradient-danger); color: white; padding: 2px 8px; border-radius: 12px; font-size: 12px; margin-left: 8px; font-weight: 600; }

@media (max-width: 1200px) {
    .settings-row-top { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
    .settings-row-bottom { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
    .practice-main { min-width: 0; }
}
@media (max-width: 768px) {
    .settings-row-top, .settings-row-bottom { grid-template-columns: 1fr; }
}

/* ================================================================
   动画效果系统
   ================================================================ */

.particles-bg { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; overflow: hidden; }
.particle { position: absolute; border-radius: 50%; animation: floatParticle linear infinite; opacity: 0; }
@keyframes floatParticle {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.aurora-bg { position: fixed; top: 0; left: 0; right: 0; height: 100%; pointer-events: none; z-index: 0; overflow: hidden; }
.aurora-layer { position: absolute; width: 200%; height: 200%; top: -50%; left: -50%; opacity: 0.1; filter: blur(80px); }
.aurora-layer-1 { background: radial-gradient(ellipse at 20% 50%, rgba(0,192,195,0.4) 0%, transparent 50%); animation: auroraMove1 20s ease-in-out infinite; }
.aurora-layer-2 { background: radial-gradient(ellipse at 80% 20%, rgba(255,99,93,0.3) 0%, transparent 50%); animation: auroraMove2 25s ease-in-out infinite; }
.aurora-layer-3 { background: radial-gradient(ellipse at 50% 80%, rgba(59,130,246,0.3) 0%, transparent 50%); animation: auroraMove3 18s ease-in-out infinite; }
.aurora-layer-4 { background: radial-gradient(ellipse at 70% 60%, rgba(251,146,60,0.25) 0%, transparent 50%); animation: auroraMove1 22s ease-in-out infinite reverse; }
.aurora-layer-5 { background: radial-gradient(ellipse at 30% 30%, rgba(16,185,129,0.2) 0%, transparent 50%); animation: auroraMove2 28s ease-in-out infinite reverse; }
@keyframes auroraMove1 { 0%,100%{transform:translate(0,0) rotate(0)} 25%{transform:translate(5%,-3%) rotate(5deg)} 50%{transform:translate(-3%,5%) rotate(-3deg)} 75%{transform:translate(-5%,-2%) rotate(3deg)} }
@keyframes auroraMove2 { 0%,100%{transform:translate(0,0) rotate(0)} 33%{transform:translate(-4%,4%) rotate(-4deg)} 66%{transform:translate(4%,-3%) rotate(5deg)} }
@keyframes auroraMove3 { 0%,100%{transform:translate(0,0) rotate(0)} 50%{transform:translate(6%,-5%) rotate(-6deg)} }

.sidebar { position: relative; overflow: hidden; }
.sidebar::after {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(0,192,195,0.04) 0%, transparent 40%);
    animation: sidebarGlow 8s ease-in-out infinite; pointer-events: none;
}
@keyframes sidebarGlow { 0%,100%{transform:translate(0,0)} 50%{transform:translate(10%,-10%)} }

.scroll-reveal { opacity: 0; transform: translateY(30px); transition: all .8s cubic-bezier(.16,1,.3,1); }
.scroll-reveal.revealed { opacity: 1; transform: translateY(0); }
.scroll-reveal-left { opacity: 0; transform: translateX(-40px); transition: all .8s cubic-bezier(.16,1,.3,1); }
.scroll-reveal-left.revealed { opacity: 1; transform: translateX(0); }
.scroll-reveal-right { opacity: 0; transform: translateX(40px); transition: all .8s cubic-bezier(.16,1,.3,1); }
.scroll-reveal-right.revealed { opacity: 1; transform: translateX(0); }
.scroll-reveal-scale { opacity: 0; transform: scale(.9); transition: all .8s cubic-bezier(.16,1,.3,1); }
.scroll-reveal-scale.revealed { opacity: 1; transform: scale(1); }

.shimmer { position: relative; overflow: hidden; }
.shimmer::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,99,93,0.05), rgba(0,192,195,0.06), rgba(6,182,212,0.05), transparent);
    animation: shimmerSlide 3s ease-in-out infinite;
}
@keyframes shimmerSlide { 0%{left:-100%} 100%{left:100%} }

.glow-card { position: relative; }
.glow-card::before {
    content: ''; position: absolute; top: -1px; left: -1px; right: -1px; bottom: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255,99,93,0.15), rgba(0,192,195,0.05), rgba(6,182,212,0.15));
    z-index: -1; opacity: 0; transition: opacity .4s;
}
.glow-card:hover::before { opacity: 1; }

.gradient-text-flow {
    background: linear-gradient(90deg, #ff635d, #00c0c3, #f97316, #ffe48f, #22d3ee, #ff635d);
    background-size: 300% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    animation: gradientFlow 5s linear infinite;
}
@keyframes gradientFlow { 0%{background-position:0% center} 100%{background-position:300% center} }

.float-animation { animation: gentleFloat 6s ease-in-out infinite; }
@keyframes gentleFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

.pulse-glow { animation: pulseGlow 3s ease-in-out infinite; }
@keyframes pulseGlow { 0%,100%{box-shadow:0 0 5px rgba(255,99,93,0.1),0 0 10px rgba(0,192,195,0.05)} 50%{box-shadow:0 0 20px rgba(255,99,93,0.15),0 0 40px rgba(0,192,195,0.08),0 0 60px rgba(6,182,212,0.04)} }

.stagger-in > * { opacity: 0; transform: translateY(20px); animation: staggerFadeIn .6s cubic-bezier(.16,1,.3,1) forwards; }
.stagger-in > *:nth-child(1){animation-delay:.1s}
.stagger-in > *:nth-child(2){animation-delay:.2s}
.stagger-in > *:nth-child(3){animation-delay:.3s}
.stagger-in > *:nth-child(4){animation-delay:.4s}
.stagger-in > *:nth-child(5){animation-delay:.5s}
.stagger-in > *:nth-child(6){animation-delay:.6s}
@keyframes staggerFadeIn { to{opacity:1;transform:translateY(0)} }

.page-loader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-darker);
    z-index: 99999;
    display: flex; align-items: center; justify-content: center;
    transition: opacity .6s ease, visibility .6s ease;
}
.page-loader.loaded { opacity: 0; visibility: hidden; pointer-events: none; }
.page-loader .loader-content { text-align: center; color: white; }
.page-loader .loader-icon {
    font-size: 48px; color: var(--accent-bright);
    animation: loaderPulse 1.5s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(34,211,238,0.5));
}
@keyframes loaderPulse { 0%,100%{transform:scale(1);opacity:1} 50%{transform:scale(1.15);opacity:.7} }
.page-loader .loader-text { margin-top: 16px; font-size: 14px; color: rgba(255,255,255,0.5); letter-spacing: 3px; font-family: var(--font-display); }
.page-loader .loader-bar { width: 120px; height: 2px; background: rgba(255,255,255,0.06); border-radius: 2px; margin: 12px auto 0; overflow: hidden; }
.page-loader .loader-bar-fill { height: 100%; width: 0%; background: var(--gradient-main); border-radius: 2px; animation: loaderProgress 1.2s ease-in-out forwards; }
@keyframes loaderProgress { 0%{width:0} 60%{width:70%} 100%{width:100%} }

.btn-ripple {
    position: absolute; border-radius: 50%;
    background: rgba(255,255,255,0.2);
    transform: scale(0);
    animation: btnRipple .6s ease-out;
    pointer-events: none;
}
@keyframes btnRipple { to{transform:scale(4);opacity:0} }

.progress-fill::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: progressShimmer 1.5s ease-in-out infinite;
}
@keyframes progressShimmer { 0%{transform:translateX(-100%)} 100%{transform:translateX(100%)} }

.ranking-item { animation: slideInRanking .4s cubic-bezier(.16,1,.3,1) backwards; }
.ranking-item:nth-child(1){animation-delay:.05s}
.ranking-item:nth-child(2){animation-delay:.1s}
.ranking-item:nth-child(3){animation-delay:.15s}
.ranking-item:nth-child(4){animation-delay:.2s}
.ranking-item:nth-child(5){animation-delay:.25s}
.ranking-item:nth-child(n+6){animation-delay:.3s}
@keyframes slideInRanking { from{opacity:0;transform:translateX(-20px)} to{opacity:1;transform:translateX(0)} }

.practice-result h2 { animation: resultBounce .8s cubic-bezier(.34,1.56,.64,1); }
@keyframes resultBounce { from{opacity:0;transform:scale(.5)} to{opacity:1;transform:scale(1)} }
.result-item { animation: resultItemIn .5s cubic-bezier(.16,1,.3,1) backwards; }
.result-item:nth-child(1){animation-delay:.2s}
.result-item:nth-child(2){animation-delay:.3s}
.result-item:nth-child(3){animation-delay:.4s}
.result-item:nth-child(4){animation-delay:.5s}
.result-item:nth-child(5){animation-delay:.6s}
@keyframes resultItemIn { from{opacity:0;transform:translateY(20px) scale(.95)} to{opacity:1;transform:translateY(0) scale(1)} }

.mouse-glow {
    position: fixed; width: 400px; height: 400px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,99,93,0.04) 0%, rgba(0,192,195,0.02) 40%, transparent 70%);
    pointer-events: none; z-index: 0;
    transform: translate(-50%, -50%);
    transition: left .3s ease, top .3s ease;
}

.deco-circle {
    position: fixed; border-radius: 50%; pointer-events: none; z-index: 0;
}
.deco-circle-1 {
    width: 300px; height: 300px; top: 10%; right: -5%;
    background: radial-gradient(circle, rgba(255,99,93,0.06) 0%, transparent 70%);
    animation: decoFloat1 15s ease-in-out infinite;
}
.deco-circle-2 {
    width: 400px; height: 400px; bottom: 5%; left: -8%;
    background: radial-gradient(circle, rgba(6,182,212,0.05) 0%, transparent 70%);
    animation: decoFloat2 20s ease-in-out infinite;
}
.deco-circle-3 {
    width: 200px; height: 200px; top: 50%; left: 30%;
    background: radial-gradient(circle, rgba(249,115,22,0.04) 0%, transparent 70%);
    animation: decoFloat1 12s ease-in-out infinite reverse;
}
.deco-ring {
    position: fixed; border-radius: 50%; pointer-events: none; z-index: 0;
    border: 1px solid rgba(0,192,195,0.06);
}
.deco-ring-1 {
    width: 500px; height: 500px; top: -100px; right: -100px;
    animation: decoRing 25s linear infinite;
}
.deco-ring-2 {
    width: 350px; height: 350px; bottom: -50px; left: -50px;
    border-color: rgba(255,99,93,0.05);
    animation: decoRing 18s linear infinite reverse;
}
@keyframes decoFloat1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-20px,30px)} }
@keyframes decoFloat2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,-20px)} }
@keyframes decoRing { 0%{transform:rotate(0)} 100%{transform:rotate(360deg)} }

@media screen and (max-width: 768px) {
    .aurora-bg, .particles-bg, .mouse-glow, .deco-circle, .deco-ring { display: none !important; }
    .scroll-reveal, .scroll-reveal-left, .scroll-reveal-right, .scroll-reveal-scale { opacity: 1; transform: none; transition: none; }
    .page-loader { display: none !important; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    .aurora-bg, .particles-bg, .mouse-glow { display: none !important; }
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 40px auto 20px;
    width: 220px; height: 220px;
}
.hero-visual-ring {
    position: absolute; width: 100%; height: 100%;
    border-radius: 50%;
    border: 2px solid transparent;
    background: linear-gradient(135deg, rgba(255,99,93,0.3), rgba(0,192,195,0.2), rgba(6,182,212,0.3), rgba(249,115,22,0.2)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    animation: ringRotate 8s linear infinite;
}
.hero-visual-ring-outer {
    position: absolute; width: 110%; height: 110%; top: -5%; left: -5%;
    border-radius: 50%;
    border: 1px solid transparent;
    background: linear-gradient(135deg, rgba(6,182,212,0.15), rgba(255,99,93,0.1), rgba(249,115,22,0.15)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    animation: ringRotate 12s linear infinite reverse;
}
.hero-visual-glow {
    position: absolute; width: 130%; height: 130%; top: -15%; left: -15%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,99,93,0.06) 0%, rgba(0,192,195,0.04) 40%, transparent 70%);
    animation: glowPulse 4s ease-in-out infinite;
}
.hero-visual-icon {
    width: 120px; height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,99,93,0.08), rgba(0,192,195,0.08), rgba(6,182,212,0.08));
    display: flex; align-items: center; justify-content: center;
    font-size: 48px;
    color: var(--accent-bright);
    filter: drop-shadow(0 0 20px rgba(0,192,195,0.2)) drop-shadow(0 0 8px rgba(255,99,93,0.15));
    position: relative; z-index: 1;
    animation: iconFloat 5s ease-in-out infinite;
}
@keyframes ringRotate { 0%{transform:rotate(0)} 100%{transform:rotate(360deg)} }
@keyframes glowPulse { 0%,100%{opacity:.6;transform:scale(1)} 50%{opacity:1;transform:scale(1.05)} }
@keyframes iconFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }

.deco-star {
    position: fixed; pointer-events: none; z-index: 0;
    width: 0; height: 0;
}
.deco-star-1 {
    top: 15%; right: 12%;
    border-left: 6px solid transparent; border-right: 6px solid transparent;
    border-bottom: 10px solid rgba(255,99,93,0.15);
    transform: rotate(15deg);
    animation: starTwinkle 3s ease-in-out infinite;
}
.deco-star-2 {
    bottom: 20%; left: 8%;
    border-left: 5px solid transparent; border-right: 5px solid transparent;
    border-bottom: 8px solid rgba(6,182,212,0.12);
    transform: rotate(-20deg);
    animation: starTwinkle 4s ease-in-out infinite 1s;
}
.deco-star-3 {
    top: 40%; right: 5%;
    border-left: 4px solid transparent; border-right: 4px solid transparent;
    border-bottom: 7px solid rgba(249,115,22,0.1);
    transform: rotate(30deg);
    animation: starTwinkle 3.5s ease-in-out infinite 0.5s;
}
@keyframes starTwinkle { 0%,100%{opacity:.3;transform:scale(1) rotate(var(--r, 15deg))} 50%{opacity:.8;transform:scale(1.3) rotate(var(--r, 15deg))} }

.deco-diamond {
    position: fixed; pointer-events: none; z-index: 0;
    width: 12px; height: 12px;
    border: 1.5px solid rgba(0,192,195,0.1);
    transform: rotate(45deg);
}
.deco-diamond-1 { top: 25%; left: 15%; border-color: rgba(255,99,93,0.12); animation: diamondFloat 7s ease-in-out infinite; }
.deco-diamond-2 { bottom: 30%; right: 10%; border-color: rgba(6,182,212,0.1); animation: diamondFloat 9s ease-in-out infinite 2s; }
.deco-diamond-3 { top: 60%; left: 5%; border-color: rgba(249,115,22,0.08); animation: diamondFloat 6s ease-in-out infinite 1s; }
@keyframes diamondFloat { 0%,100%{transform:rotate(45deg) translate(0,0)} 50%{transform:rotate(45deg) translate(5px,-8px)} }

.bento-card .bento-card-visual {
    position: absolute; top: -20px; right: -20px;
    width: 80px; height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,99,93,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.bento-card:nth-child(1) .bento-card-visual { background: radial-gradient(circle, rgba(0,192,195,0.08) 0%, transparent 70%); }
.bento-card:nth-child(2) .bento-card-visual { background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 70%); }
.bento-card:nth-child(3) .bento-card-visual { background: radial-gradient(circle, rgba(255,99,93,0.08) 0%, transparent 70%); }
.bento-card:nth-child(4) .bento-card-visual { background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%); }

.neon-line {
    position: fixed; pointer-events: none; z-index: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255,99,93,0.06), rgba(0,192,195,0.04), transparent);
    filter: blur(0.5px);
}
.neon-line-1 { top: 30%; left: 0; right: 0; animation: lineSlide 15s ease-in-out infinite; }
.neon-line-2 { bottom: 25%; left: 0; right: 0; background: linear-gradient(90deg, transparent, rgba(6,182,212,0.06), rgba(249,115,22,0.04), transparent); animation: lineSlide 20s ease-in-out infinite 5s; }
@keyframes lineSlide { 0%,100%{opacity:.3} 50%{opacity:.7} }

@media screen and (max-width: 768px) {
    .hero-visual { width: 160px; height: 160px; margin: 30px auto 15px; }
    .hero-visual-icon { width: 90px; height: 90px; font-size: 36px; }
    .deco-neon { display: none !important; }
}

.deco-neon {
    position: fixed; pointer-events: none; z-index: 0;
    transition: transform .5s cubic-bezier(.34,1.56,.64,1);
    opacity: 0.7;
}
.deco-neon:hover { opacity: 1; transform: scale(1.1) !important; }
.deco-neon-octopus {
    width: 140px; height: auto;
    top: 12%; left: 1%;
    animation: neonFloatY 3.16s ease-in-out infinite;
    filter: drop-shadow(0 0 8px rgba(255,99,93,0.3));
}
.deco-neon-fish {
    width: 120px; height: auto;
    top: 30%; right: 1%;
    animation: neonFloatY 2.8s ease-in-out infinite 1s;
    filter: drop-shadow(0 0 8px rgba(0,192,195,0.3));
}
.deco-neon-cloud1 {
    width: 180px; height: auto;
    bottom: 25%; left: 2%;
    animation: neonFloatX 3s ease-in-out infinite 0.5s;
    filter: drop-shadow(0 0 10px rgba(255,99,93,0.2)) drop-shadow(0 0 5px rgba(0,192,195,0.15));
}
.deco-neon-cloud2 {
    width: 160px; height: auto;
    top: 55%; right: 3%;
    animation: neonFloatX 2.6s ease-in-out infinite 2s;
    filter: drop-shadow(0 0 10px rgba(0,192,195,0.2)) drop-shadow(0 0 5px rgba(249,115,22,0.15));
}
.deco-cloud1 {
    width: 80px; height: auto;
    bottom: 10%; left: 5%;
    animation: neonFloatX 8s ease-in-out infinite;
    opacity: 0.4;
    filter: drop-shadow(0 0 5px rgba(0,192,195,0.15));
}
.deco-cloud2 {
    width: 70px; height: auto;
    top: 70%; right: 5%;
    animation: neonFloatX 7.9s ease-in-out infinite 1s;
    opacity: 0.4;
    filter: drop-shadow(0 0 5px rgba(255,99,93,0.15));
}
@keyframes neonFloatY {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(15px); }
}
@keyframes neonFloatX {
    0%,100% { transform: translateX(0); }
    50% { transform: translateX(15px); }
}

.desktop-only { display: block; }
@media screen and (max-width: 768px) {
    .desktop-only { display: none !important; }
}

.import-section-centered {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.section-deco-title {
    display: flex; align-items: center; justify-content: center;
    gap: clamp(12px, 2vw, 24px); padding: 30px 0 2px; position: relative;
}
.section-deco-title::before {
    content: ''; position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
    width: clamp(40px, 5vw, 60px); height: clamp(40px, 5vw, 60px);
    background: url('../img/deco/title_sun-r.webp') no-repeat center center / contain;
    animation: sunRotate 20s linear infinite; opacity: 1;
}
.deco-title-line {
    flex: 1; max-width: 120px; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,192,195,0.2), transparent);
}
.deco-title-line.left { background: linear-gradient(90deg, transparent, rgba(0,192,195,0.3)); }
.deco-title-line.right { background: linear-gradient(270deg, transparent, rgba(0,192,195,0.3)); }
.deco-title-diamond {
    width: 8px; height: 8px;
    border: 1.5px solid rgba(0,192,195,0.3);
    transform: rotate(45deg); flex-shrink: 0;
}
.neon-text {
    font-family: var(--font-display);
    font-size: clamp(20px, 3vw, 28px); font-weight: 800;
    letter-spacing: 6px;
    background: linear-gradient(90deg, #ff635d, #00c0c3, #f97316, #ffe48f);
    background-size: 300% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    animation: neonTextShift 4s linear infinite;
}
@keyframes neonTextShift { 0%{background-position:0%} 100%{background-position:300%} }
.deco-title-sub {
    font-size: clamp(18px, 2.5vw, 24px); color: rgba(30,50,55,0.5);
    letter-spacing: 4px; font-weight: 600;
}

.deco-coin {
    width: 32px; height: 32px;
    animation: coinRotate 3s ease-in-out infinite;
    filter: drop-shadow(0 0 4px rgba(0,192,195,0.2));
    flex-shrink: 0;
}
@keyframes coinRotate {
    0%,100% { transform: rotateY(0deg); }
    50% { transform: rotateY(180deg); }
}

.deco-flash {
    position: relative; display: inline-block;
}
.deco-flash::before {
    content: ''; position: absolute;
    width: 14px; height: 14px;
    background: var(--salmon);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
    animation: flashPulse 2s ease-in-out infinite;
}
@keyframes flashPulse { 0%,100%{opacity:.4;transform:scale(.8)} 50%{opacity:1;transform:scale(1.1)} }

.nav-flash {
    position: absolute; width: 14px; height: 14px;
    background: var(--accent);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
}

.section-header h1 {
    position: relative; display: inline-block;
}
.section-header h1::before,
.section-header h1::after {
    content: ''; position: absolute;
    width: 14px; height: 14px;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0L12 8L20 10L12 12L10 20L8 12L0 10L8 8Z'/%3E%3C/svg%3E") no-repeat center / contain;
}
.section-header h1::before {
    left: -24px; top: 50%; transform: translateY(-50%);
    background: var(--salmon);
    animation: flashPulse 2.5s ease-in-out infinite;
}
.section-header h1::after {
    right: -24px; top: 50%; transform: translateY(-50%);
    background: var(--accent);
    animation: flashPulse 2.5s ease-in-out infinite 0.5s;
}

.wrongbook-mini-overview {
    margin-top: 10px; padding: 8px 0;
    border-top: 1px solid rgba(0,192,195,0.08);
}
.wm-row {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 4px;
    border-bottom: 1px solid rgba(0,192,195,0.04);
}
.wm-row:last-child { border-bottom: none; }
.wm-row-icon {
    width: 24px; height: 24px; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px;
    background: rgba(0,192,195,0.06); color: var(--accent);
    flex-shrink: 0;
}
.wm-row:nth-child(2) .wm-row-icon { background: rgba(249,115,22,0.06); color: var(--orange); }
.wm-row:nth-child(3) .wm-row-icon { background: rgba(5,150,105,0.06); color: var(--success); }
.wm-row-num {
    font-family: var(--font-display);
    font-size: 18px; font-weight: 800;
    background: linear-gradient(135deg, #00c0c3, #22d3ee);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.wm-row-label { font-size: 12px; color: var(--text-muted); }
.wrongbook-hint {
    margin-top: 8px; font-size: 12px; color: rgba(0,192,195,0.5);
    text-align: right;
}
.bento-grid-two {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}
@media screen and (max-width: 768px) {
    .bento-grid-two { grid-template-columns: 1fr; }
}

.features-carousel {
    position: relative; margin: 10px 0 0; padding: 0 60px 10px;
    display: flex; flex-direction: column; align-items: center;
}
.features-cards-wrap {
    width: 100%; max-width: 1200px;
    height: 320px;
    overflow: hidden;
    position: relative;
    cursor: grab;
}
.features-cards-wrap:active { cursor: grabbing; }
.features-cards-track {
    width: 100%; height: 100%;
    position: relative;
}
.feature-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-color); border-radius: var(--radius);
    padding: 48px 42px; text-align: center;
    width: 420px;
    box-shadow: 0 4px 20px rgba(0,40,50,0.08);
    position: absolute;
}
.feature-card::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 4px; border-radius: var(--radius) var(--radius) 0 0;
    background: linear-gradient(90deg, #ff635d, #00c0c3, #f97316);
    background-size: 200% auto;
    animation: featureBarShift 3s linear infinite;
    opacity: 0;
    transition: opacity .3s;
}
.feature-card.is-active::after { opacity: 1; }

@keyframes featureBarShift { 0%{background-position:0%} 100%{background-position:200%} }
.feature-icon {
    width: 72px; height: 72px; border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 30px;
    background: linear-gradient(135deg, rgba(0,192,195,0.08), rgba(255,99,93,0.05));
    color: var(--accent);
}
.feature-card[data-color="orange"] .feature-icon { color: var(--orange); background: linear-gradient(135deg, rgba(249,115,22,0.08), rgba(255,99,93,0.05)); }
.feature-card[data-color="green"] .feature-icon { color: var(--success); background: linear-gradient(135deg, rgba(5,150,105,0.08), rgba(0,192,195,0.05)); }
.feature-card[data-color="salmon"] .feature-icon { color: var(--salmon); background: linear-gradient(135deg, rgba(255,99,93,0.08), rgba(249,115,22,0.05)); }
.feature-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 10px; font-family: var(--font-display); }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

.features-swiper-nav {
    position: absolute; left: 0; right: 0; top: 0; height: 100%;
    display: flex; justify-content: space-between;
    pointer-events: none; z-index: 20;
    padding: 0;
}
.features-swiper-nav .carousel-btn {
    position: absolute;
    top: 25%;
    width: 48px; height: 48px;
    border-radius: 50%;
    background: rgba(0,192,195,0.15);
    border: 1px solid rgba(0,192,195,0.25);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--accent);
    pointer-events: auto;
    transition: all .3s;
}
.features-swiper-nav .carousel-btn:hover {
    background: rgba(0,192,195,0.3);
    transform: scale(1.1);
}
.features-swiper-nav .carousel-btn.prev { left: calc(50% - 270px); }
.features-swiper-nav .carousel-btn.next { right: calc(50% - 270px); }
.features-swiper-nav .carousel-btn-arrow {
    height: 24px; display: flex; align-items: center; justify-content: center;
}
.features-swiper-nav .carousel-btn-arrow img { height: 100%; width: auto; }
.features-swiper-nav .carousel-btn.next .carousel-btn-arrow img { transform: rotate(180deg); }
.features-swiper-nav .carousel-btn-label {
    display: none;
}

.features-pagination { position: relative; margin-top: 12px; }
.features-pagination .swiper-pagination-bullet {
    width: 8px; height: 8px; background: var(--border-color); opacity: 1;
}
.features-pagination .swiper-pagination-bullet-active {
    background: var(--accent); width: 24px; border-radius: 4px;
}

.features-umbrellas {
    display: flex; gap: clamp(10px, 2vw, 24px); justify-content: center;
    margin-top: 30px; padding: 10px 0;
}
.features-umbrellas .umbrella-item {
    width: clamp(60px, 8vw, 160px); height: auto; opacity: 0.6;
    transition: all .3s;
}
.features-umbrellas .umbrella-item:nth-child(1) { animation: umbrellaSpin 4s linear infinite; width: clamp(78px, 10.4vw, 208px); margin-top: calc(clamp(60px, 8vw, 160px) / -3); }
.features-umbrellas .umbrella-item:nth-child(2) { animation: umbrellaSpin 8s linear infinite; }
.features-umbrellas .umbrella-item:nth-child(3) { animation: umbrellaSpin 10s linear infinite reverse; }
.features-umbrellas .umbrella-item:nth-child(4) { animation: umbrellaSpin 4s linear infinite reverse; width: clamp(78px, 10.4vw, 208px); margin-top: calc(clamp(60px, 8vw, 160px) / -3); }
.features-umbrellas .umbrella-item:hover { opacity: 1; scale: 1.1; }

@keyframes umbrellaSpin { 0%{transform:rotate(0)} 100%{transform:rotate(360deg)} }

@media screen and (max-width: 768px) {
    .section-deco-title { gap: 8px; padding: 24px 0 2px; flex-wrap: wrap; }
    .section-deco-title::before { width: clamp(28px, 8vw, 40px); height: clamp(28px, 8vw, 40px); top: -12px; }
    .neon-text { font-size: clamp(14px, 5vw, 20px); letter-spacing: 3px; }
    .deco-title-sub { font-size: clamp(12px, 4vw, 18px); letter-spacing: 2px; }
    .deco-coin { width: 20px; height: 20px; }
    .feature-card { width: 260px; padding: 30px 22px; }
    .feature-icon { width: 56px; height: 56px; font-size: 24px; }
    .feature-card h4 { font-size: 17px; }
    .feature-card p { font-size: 12px; }
    .features-carousel { padding: 0 30px 10px; }
    .features-cards-wrap { height: 260px; }
    .features-swiper-nav .carousel-btn { width: 40px; height: 40px; }
    .features-swiper-nav .carousel-btn.prev { left: calc(50% - 155px); }
    .features-swiper-nav .carousel-btn.next { right: calc(50% - 155px); }
    .features-swiper-nav .carousel-btn-arrow { height: 18px; }
    .features-swiper-nav .carousel-btn-label { display: none; }
    .features-umbrellas .umbrella-item { width: 55px; }
}

.deco-corner-frame { position: relative; }
.deco-corner-frame .corner {
    position: absolute; width: 20px; height: 20px; z-index: 2; pointer-events: none;
}
.deco-corner-frame .corner::before,
.deco-corner-frame .corner::after {
    content: ''; position: absolute; background: var(--accent); opacity: 0.25;
}
.corner.tl { top: 8px; left: 8px; }
.corner.tl::before { top: 0; left: 0; width: 100%; height: 1.5px; }
.corner.tl::after { top: 0; left: 0; width: 1.5px; height: 100%; }
.corner.tr { top: 8px; right: 8px; }
.corner.tr::before { top: 0; right: 0; width: 100%; height: 1.5px; }
.corner.tr::after { top: 0; right: 0; width: 1.5px; height: 100%; }
.corner.bl { bottom: 8px; left: 8px; }
.corner.bl::before { bottom: 0; left: 0; width: 100%; height: 1.5px; }
.corner.bl::after { bottom: 0; left: 0; width: 1.5px; height: 100%; }
.corner.br { bottom: 8px; right: 8px; }
.corner.br::before { bottom: 0; right: 0; width: 100%; height: 1.5px; }
.corner.br::after { bottom: 0; right: 0; width: 1.5px; height: 100%; }

.deco-wave-line {
    position: relative; height: 30px; margin: 20px 0; overflow: hidden;
}
.deco-wave-line svg { width: 100%; height: 100%; }

.deco-dia-arrow {
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; flex-shrink: 0;
}
.deco-dia-arrow svg { width: 100%; height: 100%; }

.deco-flower {
    position: fixed; pointer-events: none; z-index: 0; opacity: 0.18;
}
.deco-flower-1 { width: 80px; height: auto; top: 15%; right: 3%; transform: rotate(15deg); animation: flowerFloat 8s ease-in-out infinite; }
.deco-flower-2 { width: 60px; height: auto; bottom: 20%; left: 2%; transform: scaleX(-1) rotate(-10deg); animation: flowerFloat2 10s ease-in-out infinite 3s; }

@keyframes flowerFloat {
    0%,100% { transform: rotate(15deg) translateY(0); }
    50% { transform: rotate(15deg) translateY(-10px); }
}
@keyframes flowerFloat2 {
    0%,100% { transform: scaleX(-1) rotate(-10deg) translateY(0); }
    50% { transform: scaleX(-1) rotate(-10deg) translateY(-10px); }
}

.deco-dashed-border {
    position: fixed; pointer-events: none; z-index: 0;
    opacity: 0.12;
}
.deco-dashed-border-1 {
    top: 50%; left: 50%; width: 300px; height: 300px;
    transform: translate(-50%, -50%) rotate(45deg);
    border: 1.5px dashed var(--accent);
    animation: dashRotate 30s linear infinite;
}
.deco-dashed-border-2 {
    top: 30%; right: 8%; width: 150px; height: 150px;
    transform: rotate(20deg);
    border: 1px dashed var(--salmon);
    animation: dashRotate 25s linear infinite reverse;
}

.deco-corner {
    position: absolute; pointer-events: none; z-index: 0; opacity: 0.88;
}
.deco-corner-right {
    bottom: 0; right: 0;
    width: clamp(100px, 15vw, 257px); height: auto;
    transform: scaleX(-1) rotate(180deg);
}

@keyframes dashRotate { 0%{transform:translate(-50%,-50%) rotate(45deg)} 100%{transform:translate(-50%,-50%) rotate(405deg)} }
.deco-dashed-border-2 { animation-name: dashRotate2; }
@keyframes dashRotate2 { 0%{transform:rotate(20deg)} 100%{transform:rotate(380deg)} }

.site-footer {
    position: relative; text-align: center; overflow: hidden;
    margin-top: 60px;
}
.site-footer .footer-fence-wrap {
    width: 100%; height: 60px; background: transparent;
    background-image: url('../img/deco/deco_fence.svg');
    background-repeat: repeat-x;
    background-size: auto 60px;
    background-position: center;
}
.site-footer .footer-body {
    background: #222; padding: 30px 40px 20px; color: #fff;
    position: relative;
}
.site-footer .footer-inner {
    max-width: 800px; margin: 0 auto;
    display: flex; align-items: flex-start; justify-content: space-between;
}
.site-footer .footer-left { text-align: left; }
.site-footer .footer-logo {
    font-family: var(--font-display); font-size: 20px; font-weight: 800;
    background: linear-gradient(90deg, #ff635d, #00c0c3, #f97316, #ffe48f);
    background-size: 300% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 4s linear infinite;
    margin-bottom: 12px;
}
.site-footer .footer-social {
    display: flex; align-items: center; gap: 12px; margin-top: 8px;
}
.site-footer .footer-social-label {
    font-size: 10px; letter-spacing: 2px; opacity: 0.5; margin-right: 4px;
}
.site-footer .footer-social a {
    color: #fff; font-size: 16px; opacity: 0.6; transition: all .3s;
}
.site-footer .footer-social a:hover { opacity: 1; color: var(--accent); }
.site-footer .footer-right {
    display: flex; align-items: flex-start; gap: 30px; position: relative;
}
.site-footer .footer-nav {
    display: flex; gap: 16px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.15);
}
.site-footer .footer-nav-item {
    writing-mode: vertical-rl; text-orientation: mixed;
    font-size: 12px; letter-spacing: 2px; opacity: 0.5;
    transition: all .3s; color: #fff; cursor: default;
}
.site-footer .footer-totop-col {
    display: flex; flex-direction: column; align-items: center; gap: 0;
    cursor: pointer; transition: all .3s;
    position: relative; width: 80px; height: 120px;
}
.site-footer .footer-totop-col:hover { opacity: 0.8; }
.site-footer .footer-totop-line {
    position: absolute; left: 50%; width: 1px; top: 0; bottom: 0;
    background: rgba(255,255,255,0.3); margin-left: 0;
}
.site-footer .footer-totop-line-fill {
    position: absolute; top: 0; left: 0; right: 0; height: 0;
    background: var(--accent);
    animation: totopLineAnim 3s ease-in-out infinite;
}
.site-footer .footer-totop-col:hover .footer-totop-line-fill {
    animation: unset; height: 100%;
}
.site-footer .footer-totop-text {
    writing-mode: vertical-rl; font-size: 11px; letter-spacing: 3px; opacity: 0.6;
    position: absolute; right: 0; top: 0; bottom: 0;
    display: flex; justify-content: center; align-items: center;
    width: 30px; line-height: 1;
}
.site-footer .footer-totop-col:hover .footer-totop-text { opacity: 1; color: var(--accent); }
.site-footer .footer-totop-dot {
    width: 9px; height: 9px; border-radius: 50%;
    background: var(--salmon); position: absolute; bottom: 0; left: 50%;
    margin-left: -4.5px; z-index: 2; transition: all 0.3s;
}
.site-footer .footer-totop-col:hover .footer-totop-dot { bottom: calc(100% - 9px); }
@keyframes totopLineAnim {
    0% { height: 0; top: 0; }
    20%, 40% { height: 100%; top: 0; }
    60%, 100% { height: 0; top: 100%; }
}
.site-footer .footer-bottom {
    max-width: 800px; margin: 16px auto 0; padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex; justify-content: center; align-items: center;
    font-size: 11px; opacity: 0.4;
    letter-spacing: 0.5px;
}
.site-footer .footer-bottom a { color: #fff; text-decoration: none; transition: opacity .3s; }
.site-footer .footer-bottom a:hover { opacity: 0.7; }

@keyframes gradientFlow {
    0% { background-position: 0% center; }
    100% { background-position: 300% center; }
}

@media screen and (max-width: 768px) {
    .site-footer .footer-inner { flex-direction: column; gap: 20px; align-items: center; }
    .site-footer .footer-left { text-align: center; }
    .site-footer .footer-social { justify-content: center; }
    .site-footer .footer-nav { flex-wrap: wrap; justify-content: center; }
    .site-footer .footer-nav-item { writing-mode: horizontal-tb; font-size: 11px; }
    .site-footer .footer-right { flex-direction: column; align-items: center; }
    .site-footer .footer-bottom { flex-direction: column; gap: 4px; text-align: center; }
}

.gnav-menu-btn {
    position: fixed; top: 15px; right: 15px; z-index: 9999;
    width: 80px; height: 80px;
    background: url('../img/deco/menu_bg.svg') no-repeat center center / contain;
    cursor: pointer; display: none;
    border: none; padding: 0;
}
.gnav-menu-btn .menu-lines {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 28px; height: 20px; display: flex; flex-direction: column; justify-content: space-between;
}
.gnav-menu-btn .menu-lines span {
    display: block; width: 100%; height: 2px; background: var(--text-primary);
    border-radius: 1px; transition: all .3s;
}
.gnav-menu-btn.is-active .menu-lines span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.gnav-menu-btn.is-active .menu-lines span:nth-child(2) { opacity: 0; }
.gnav-menu-btn.is-active .menu-lines span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

@media screen and (max-width: 768px) {
    .deco-flower { opacity: 0.1; }
    .deco-sun, .deco-refresh-btn, .deco-umbrella,
    .deco-dashed-border, .deco-fence, .deco-cloud-frame { display: none !important; }
    .gnav-menu-btn { display: block; width: 40px; height: 40px; top: 10px; right: 10px; }
    .gnav-menu-btn .menu-lines { width: 18px; height: 12px; }
    .gnav-menu-btn .menu-lines span { height: 1.5px; }
    .gnav-menu-btn.is-active .menu-lines span:nth-child(1) { transform: translateY(5.25px) rotate(45deg); }
    .gnav-menu-btn.is-active .menu-lines span:nth-child(3) { transform: translateY(-5.25px) rotate(-45deg); }
    .top-nav .nav-links { display: none; }
    .top-nav .nav-links.is-open {
        display: flex; flex-direction: column;
        position: absolute; top: 100%; left: 0; right: 0;
        background: var(--bg-card); backdrop-filter: blur(20px);
        border-radius: 0 0 var(--radius) var(--radius);
        padding: 12px 0; box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    }
}