.pinyin-hero {
    background: linear-gradient(135deg, #0c0a2a 0%, #1a1650 25%, #1e1b4b 50%, #15103d 75%, #0a0820 100%);
}

.pinyin-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/static/images/pinyin/kv_bg.png') center center / cover no-repeat;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.pinyin-hero::before {
    background:
        radial-gradient(ellipse at 20% 40%, rgba(99,102,241,0.25) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 25%, rgba(139,92,246,0.18) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 80%, rgba(79,70,229,0.12) 0%, transparent 50%);
}

.pinyin-badge {
    background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(139,92,246,0.15));
    border: 1px solid rgba(99,102,241,0.3);
    color: #e0e7ff;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.15);
}

.pinyin-badge i {
    color: #818cf8;
}

.pinyin-badge:hover {
    background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(139,92,246,0.25));
    border-color: rgba(99,102,241,0.5);
    box-shadow: 0 6px 20px rgba(99,102,241,0.25);
}

.pinyin-badge:hover i {
    color: #a5b4fc;
}

.pinyin-hero-title {
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e7ff 30%, #c7d2fe 60%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 3px 16px rgba(99,102,241,0.4));
}

.pinyin-hero-title:hover {
    background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 30%, #e0e7ff 60%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 20px rgba(99,102,241,0.5));
}

.pinyin-hero-desc {
    color: #c7d2fe !important;
    font-size: 1.125rem;
    line-height: 1.9;
    letter-spacing: 0.02em;
}

.pinyin-btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #7c3aed 100%) !important;
    box-shadow: 0 4px 20px rgba(99,102,241,0.4), 0 0 40px rgba(139,92,246,0.15);
    border: 1px solid rgba(165,180,252,0.2);
    color: #ffffff !important;
}

.pinyin-btn-primary:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 50%, #6366f1 100%) !important;
    box-shadow: 0 8px 30px rgba(99,102,241,0.6), 0 0 60px rgba(139,92,246,0.3) !important;
    transform: translateY(-3px) !important;
    border-color: rgba(165,180,252,0.4) !important;
}

.pinyin-btn-secondary {
    background: rgba(129,140,248,0.1) !important;
    border: 1px solid rgba(165,180,252,0.3) !important;
    color: #e0e7ff !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.pinyin-btn-secondary:hover {
    background: rgba(99,102,241,0.2) !important;
    border-color: rgba(99,102,241,0.6) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 16px rgba(99,102,241,0.2);
}

.pinyin-hero-system {
    color: rgba(165,180,252,0.6) !important;
    font-size: 0.8125rem;
    margin-top: 16px;
}

.pinyin-hero-system i {
    color: rgba(165,180,252,0.5);
}

.pinyin-hero .hero-particle {
    background: #818cf8;
    opacity: 0.25;
}

.pinyin-hero .hero-grid-bg {
    background-image:
        linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
}

.pinyin-hero .hero-orbit-ring {
    border-color: rgba(129,140,248,0.08);
}

.pinyin-feature-icon {
    background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(139,92,246,0.15));
}

.pinyin-showcase-badge {
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    color: #a5b4fc;
}

.pinyin-cta {
    background: linear-gradient(135deg, #312e81, #4338ca);
}

.pinyin-step-number {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
    color: #fff;
    flex-shrink: 0;
}

.pinyin-accuracy {
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.05));
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
}

.pinyin-accuracy .accuracy-number {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pinyin-accuracy .accuracy-label {
    font-size: 1.125rem;
    color: #a5b4fc;
    margin-top: 8px;
}

.pinyin-hero .hero-float-frame img {
    box-shadow: 0 20px 60px rgba(99,102,241,0.2), 0 8px 24px rgba(0,0,0,0.3);
    border: 1px solid rgba(129,140,248,0.15);
}

.pinyin-scenarios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pinyin-scenario-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pinyin-scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    opacity: 0;
    transition: var(--transition);
}

.pinyin-scenario-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99,102,241,0.2);
    box-shadow: 0 8px 30px rgba(99,102,241,0.12);
}

.pinyin-scenario-card:hover::before {
    opacity: 1;
}

.pinyin-scenario-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.75rem;
    color: #6366f1;
}

.pinyin-scenario-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.pinyin-scenario-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.pinyin-scenario-tags {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.pinyin-scenario-tag {
    font-size: 0.6875rem;
    padding: 3px 10px;
    border-radius: 50px;
    background: rgba(99,102,241,0.08);
    color: #6366f1;
    border: 1px solid rgba(99,102,241,0.12);
}

.pinyin-styles-section {
    background: rgba(99,102,241,0.03);
}

.pinyin-styles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.pinyin-style-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

.pinyin-style-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99,102,241,0.2);
    box-shadow: 0 8px 30px rgba(99,102,241,0.12);
}

.pinyin-style-label {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.pinyin-style-preview {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(99,102,241,0.04);
    border-radius: var(--radius);
}

.pinyin-preview-char {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.pinyin-ruby {
    font-size: 0.8125rem;
    color: #6366f1;
    font-weight: 600;
    line-height: 1;
}

.pinyin-hanzi {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1;
}

.pinyin-preview-char-lr {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.pinyin-side {
    font-size: 0.8125rem;
    color: #6366f1;
    font-weight: 600;
}

.pinyin-preview-pure {
    font-size: 1.5rem;
    color: #6366f1;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.pinyin-style-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.pinyin-tone-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.pinyin-tone-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 28px;
}

.pinyin-tone-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.pinyin-tone-item {
    text-align: center;
    padding: 20px 16px;
    background: rgba(99,102,241,0.04);
    border-radius: var(--radius);
    border: 1px solid rgba(99,102,241,0.08);
    transition: var(--transition);
}

.pinyin-tone-item:hover {
    border-color: rgba(99,102,241,0.2);
    background: rgba(99,102,241,0.08);
}

.pinyin-tone-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.pinyin-tone-example {
    font-size: 1rem;
    color: #6366f1;
    font-weight: 500;
    font-family: 'Consolas', 'Monaco', monospace;
    letter-spacing: 0.03em;
}

.pinyin-comparison-section {
    background: linear-gradient(135deg, rgba(99,102,241,0.03), rgba(139,92,246,0.02));
}

.pinyin-comparison-table {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.pinyin-comparison-header {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
}

.pinyin-comparison-header .pinyin-comparison-col {
    padding: 16px 24px;
    font-weight: 700;
    font-size: 0.9375rem;
}

.pinyin-comparison-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr;
    border-top: 1px solid var(--border-color);
    transition: var(--transition);
}

.pinyin-comparison-row:hover {
    background: rgba(99,102,241,0.03);
}

.pinyin-comparison-col {
    padding: 16px 24px;
    font-size: 0.9375rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.pinyin-comparison-manual {
    color: var(--text-secondary);
    justify-content: center;
}

.pinyin-comparison-manual .bi-x-circle {
    color: #ef4444;
}

.pinyin-comparison-software {
    color: #6366f1;
    font-weight: 600;
    justify-content: center;
}

.pinyin-comparison-software .bi-check-circle-fill,
.pinyin-comparison-software .bi-lightning-charge-fill,
.pinyin-comparison-software .bi-bullseye,
.pinyin-comparison-software .bi-cpu {
    color: #6366f1;
}

.pinyin-trust-section {
    background: rgba(99,102,241,0.03);
}

.pinyin-trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pinyin-trust-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pinyin-trust-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    opacity: 0;
    transition: var(--transition);
}

.pinyin-trust-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99,102,241,0.2);
    box-shadow: 0 8px 30px rgba(99,102,241,0.12);
}

.pinyin-trust-card:hover::after {
    opacity: 1;
}

.pinyin-trust-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: #6366f1;
}

.pinyin-trust-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.pinyin-trust-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 991.98px) {
    .pinyin-scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pinyin-styles-grid {
        grid-template-columns: 1fr;
    }

    .pinyin-tone-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pinyin-trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767.98px) {
    .pinyin-accuracy .accuracy-number {
        font-size: 3rem;
    }

    .pinyin-scenarios-grid {
        grid-template-columns: 1fr;
    }

    .pinyin-tone-grid {
        grid-template-columns: 1fr;
    }

    .pinyin-trust-grid {
        grid-template-columns: 1fr;
    }

    .pinyin-comparison-header,
    .pinyin-comparison-row {
        grid-template-columns: 1.5fr 1fr 1fr;
    }

    .pinyin-comparison-col {
        padding: 12px 14px;
        font-size: 0.8125rem;
    }
}