/* 2026-04-17: alias 化到 home.css token，自动获得 dark/light 双态
   --sn-accent 由紫 #7c5cff 改为 var(--signal) 雷达绿（用户确定） */

/* light 模式加强网格可见度 */
[data-theme="light"] body { --hairline: rgba(15,16,20,.10); }

.sn-page {
    --sn-bg: var(--bg-1);
    --sn-card: var(--surface);
    --sn-card-soft: var(--surface-2);
    --sn-text: var(--text);
    --sn-text-2: var(--text-2);
    --sn-text-3: var(--text-3);
    --sn-border: var(--rule);
    --sn-border-strong: var(--rule-2);
    --sn-accent: var(--signal);
    --sn-accent-soft: var(--signal-soft);
    --sn-accent-soft-strong: var(--signal-mid);
    --sn-success: var(--signal);
    --sn-warning: var(--gold);
    --sn-danger: var(--rose);
    background: var(--sn-bg);
    color: var(--sn-text);
}

.sn-page,
.sn-page * {
    box-sizing: border-box;
}

.sn-page a {
    text-decoration: none;
}

.sn-hero {
    padding: 28px 24px 16px;
}

.sn-hero-inner,
.sn-track-overview-inner,
.sn-filter-inner,
.sn-main {
    max-width: 1180px;
    margin: 0 auto;
}

.sn-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(320px, 420px);
    gap: 20px;
    align-items: stretch;
}

.sn-hero-copy,
.sn-search,
.sn-track-card,
.sn-filter-bar,
.sn-lane-section,
.sn-scene-card,
.sn-empty {
    background: var(--sn-card);
    border: 1px solid var(--sn-border);
    border-radius: 24px;
}

.sn-hero-copy {
    padding: 28px;
}

.sn-eyebrow,
.sn-section-kicker,
.sn-lane-kicker,
.sn-focus-label,
.sn-search-label {
    margin: 0;
    font-size: 12px;
    line-height: 1.4;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sn-accent);
}

.sn-hero-copy h1,
.sn-section-head h2,
.sn-lane-copy h2,
.sn-empty h2 {
    margin: 10px 0 0;
    color: var(--sn-text);
}

.sn-hero-copy h1 {
    font-size: 34px;
    line-height: 1.2;
    font-weight: 800;
}

.sn-hero-sub {
    margin: 14px 0 0;
    max-width: 720px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--sn-text-2);
}

.sn-hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 22px;
}

.sn-stat-card {
    padding: 16px;
    border-radius: 18px;
    background: var(--sn-card-soft);
    border: 1px solid var(--sn-border);
}

.sn-stat-card strong {
    display: block;
    margin-top: 8px;
    font-size: 26px;
    line-height: 1;
    font-weight: 800;
    color: var(--sn-text);
}

.sn-stat-label {
    display: block;
    font-size: 12px;
    color: var(--sn-text-3);
}

.sn-search {
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.sn-search-shell {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: 18px;
    background: var(--sn-card-soft);
    border: 1px solid var(--sn-border);
}

.sn-search-shell input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--sn-text);
    font-family: inherit;
}

.sn-search-shell input::placeholder {
    color: var(--text-3);
}

.sn-search-shell button,
.sn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    border: 1px solid transparent;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    transition: all 0.18s ease;
}

.sn-search-shell button,
.sn-btn-primary {
    background: var(--sn-accent);
    color: #ffffff;
    padding: 12px 18px;
}

.sn-search-shell button:hover,
.sn-btn-primary:hover {
    background: color-mix(in srgb, var(--sn-accent) 85%, #000);
}

.sn-track-overview {
    padding: 0 24px 18px;
}

.sn-section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.sn-section-head h2,
.sn-empty h2 {
    font-size: 28px;
    line-height: 1.25;
    font-weight: 750;
}

.sn-active-filters {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.sn-active-chip,
.sn-reset-link {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.sn-active-chip {
    background: var(--sn-card);
    border: 1px solid var(--sn-border);
    color: var(--sn-text-2);
}

.sn-reset-link {
    color: var(--sn-accent);
    background: var(--sn-accent-soft);
}

.sn-track-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}

.sn-track-card {
    min-height: 190px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    color: var(--sn-text);
    transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.sn-track-card:hover {
    transform: translateY(-2px);
    border-color: var(--sn-accent-soft-strong);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

.sn-track-card.active {
    border-color: var(--sn-accent);
    box-shadow: 0 0 0 3px var(--sn-accent-soft);
}

.sn-track-card-all {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
}

.sn-track-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sn-track-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--sn-accent-soft);
    color: var(--sn-accent);
    font-size: 18px;
    font-weight: 800;
}

.sn-track-title {
    font-size: 16px;
    font-weight: 750;
    color: var(--sn-text);
}

.sn-track-desc {
    margin: 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--sn-text-2);
}

.sn-track-examples {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sn-track-examples span,
.sn-track-meta,
.sn-cat-count,
.sn-scene-meta span,
.sn-path-step,
.sn-dim,
.sn-scene-level {
    border-radius: 999px;
}

.sn-track-examples span,
.sn-track-meta {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    background: var(--sn-card-soft);
    border: 1px solid var(--sn-border);
    font-size: 12px;
    color: var(--sn-text-3);
}

.sn-track-meta {
    width: fit-content;
    margin-top: auto;
    font-weight: 700;
    color: var(--sn-text);
}

.sn-filter-bar {
    margin: 0 24px 18px;
    padding: 16px 18px;
}

.sn-filter-inner {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sn-cat-strip,
.sn-tag-strip {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
}

.sn-cat-strip::-webkit-scrollbar,
.sn-tag-strip::-webkit-scrollbar {
    display: none;
}

.sn-cat-tab,
.sn-tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 14px;
    white-space: nowrap;
    border-radius: 999px;
    border: 1px solid var(--sn-border);
    background: var(--sn-card-soft);
    color: var(--sn-text-2);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.16s ease;
}

.sn-cat-tab:hover,
.sn-tag-chip:hover {
    color: var(--sn-accent);
    border-color: var(--sn-accent-soft-strong);
}

.sn-cat-tab.active,
.sn-tag-chip.active {
    color: #ffffff;
    border-color: var(--sn-accent);
    background: var(--sn-accent);
}

.sn-cat-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    min-height: 22px;
    padding: 0 7px;
    background: var(--rule);
    color: inherit;
    font-size: 11px;
    font-weight: 700;
}

.sn-main {
    padding: 0 24px 64px;
}

.sn-result-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
    color: var(--sn-text-2);
    font-size: 14px;
}

.sn-result-copy strong {
    color: var(--sn-text);
    font-size: 22px;
}

.sn-result-note {
    color: var(--sn-text-3);
}

.sn-lane-section {
    padding: 26px;
    margin-bottom: 18px;
}

.sn-lane-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.sn-lane-copy h2 {
    font-size: 24px;
    line-height: 1.3;
    font-weight: 760;
}

.sn-lane-copy p:last-child {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 1.8;
    color: var(--sn-text-2);
    max-width: 680px;
}

.sn-lane-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.sn-lane-meta span {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--sn-card-soft);
    border: 1px solid var(--sn-border);
    font-size: 12px;
    font-weight: 700;
    color: var(--sn-text-2);
}

.sn-scene-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.sn-scene-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 100%;
    transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.sn-scene-card:hover {
    transform: translateY(-2px);
    border-color: var(--sn-accent-soft-strong);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.16);
}

.sn-scene-top {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: start;
}

.sn-scene-icon {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    font-size: 24px;
}

.sn-scene-heading h3 {
    margin: 3px 0 0;
    font-size: 18px;
    line-height: 1.4;
    font-weight: 760;
    color: var(--sn-text);
}

.sn-scene-cat {
    margin: 0;
    font-size: 12px;
    line-height: 1.4;
    color: var(--sn-text-3);
}

.sn-scene-level {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    font-size: 12px;
    font-weight: 700;
}

.sn-level-beginner {
    background: var(--signal-soft);
    color: var(--sn-success);
}

.sn-level-intermediate {
    background: color-mix(in srgb, var(--gold) 18%, transparent);
    color: var(--ember);
}

.sn-level-advanced {
    background: color-mix(in srgb, var(--rose) 14%, transparent);
    color: var(--sn-danger);
}

.sn-scene-sub {
    margin: 0;
    font-size: 14px;
    line-height: 1.75;
    color: var(--sn-text-2);
}

.sn-scene-focus {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.sn-focus-item {
    padding: 12px 14px;
    border-radius: 18px;
    background: var(--sn-card-soft);
    border: 1px solid var(--sn-border);
}

.sn-focus-item p {
    margin: 6px 0 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--sn-text-2);
}

.sn-path-preview {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sn-path-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sn-path-step {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    background: var(--sn-accent-soft);
    color: var(--sn-accent);
    font-size: 12px;
    font-weight: 700;
}

.sn-scene-dims {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sn-dim {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    font-size: 11px;
    font-weight: 700;
}

.sn-dim-monetize {
    background: color-mix(in srgb, var(--rose) 14%, transparent);
    color: var(--rose);
}

.sn-dim-cn {
    background: var(--signal-soft);
    color: var(--signal);
}

.sn-dim-free {
    background: var(--indigo-soft);
    color: var(--indigo);
}

.sn-dim-fast {
    background: var(--signal-soft);
    color: var(--sn-accent);
}

.sn-dim-beginner {
    background: color-mix(in srgb, var(--cyan) 14%, transparent);
    color: var(--cyan);
}

.sn-scene-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 6px;
}

.sn-scene-meta span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid var(--sn-border);
    background: var(--surface-2);
    font-size: 12px;
    color: var(--sn-text-3);
}

.sn-scene-income {
    color: var(--ember) !important;
    font-weight: 700;
}

.sn-scene-actions {
    margin-top: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.sn-btn {
    min-height: 44px;
    padding: 0 16px;
}

.sn-btn-secondary {
    background: var(--sn-card-soft);
    border-color: var(--sn-border);
    color: var(--sn-text-2);
}

.sn-btn-secondary:hover {
    color: var(--sn-accent);
    border-color: var(--sn-accent-soft-strong);
}

.sn-empty {
    padding: 48px 24px;
    text-align: center;
}

.sn-empty-icon {
    width: 58px;
    height: 58px;
    margin: 0 auto 14px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sn-accent-soft);
    color: var(--sn-accent);
    font-size: 26px;
    font-weight: 800;
}

.sn-empty p {
    margin: 10px 0 20px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--sn-text-2);
}

@media (max-width: 1180px) {
    .sn-track-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .sn-scene-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 920px) {
    .sn-hero-inner {
        grid-template-columns: 1fr;
    }

    .sn-hero-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sn-section-head,
    .sn-lane-head,
    .sn-result-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .sn-active-filters,
    .sn-lane-meta {
        justify-content: flex-start;
    }
}

@media (max-width: 720px) {
    .sn-hero,
    .sn-track-overview,
    .sn-main {
        padding-left: 16px;
        padding-right: 16px;
    }

    .sn-filter-bar {
        margin-left: 16px;
        margin-right: 16px;
    }

    .sn-hero-copy,
    .sn-search,
    .sn-lane-section,
    .sn-scene-card,
    .sn-empty {
        border-radius: 20px;
    }

    .sn-hero-copy,
    .sn-search,
    .sn-lane-section {
        padding: 20px;
    }

    .sn-hero-copy h1 {
        font-size: 28px;
    }

    .sn-section-head h2,
    .sn-lane-copy h2,
    .sn-empty h2 {
        font-size: 24px;
    }

    .sn-track-grid,
    .sn-scene-grid {
        grid-template-columns: 1fr;
    }

    .sn-scene-actions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .sn-hero-stats {
        grid-template-columns: 1fr;
    }

    .sn-search-shell {
        flex-direction: column;
        align-items: stretch;
    }

    .sn-search-shell button,
    .sn-btn {
        width: 100%;
    }
}