/* ============================================================
   首页专属样式（顶栏与共享组件由 topbar.css 统一处理）
   ============================================================ */

/* ============================================================
   布局容器
   ============================================================ */
.home-wrap {
    background: var(--tb-bg);
    min-height: calc(100vh - 52px);
}

/* ============================================================
   Hero — 网格渐变背景 + 渐变标题 + 玻璃态搜索
   ============================================================ */
.home-hero {
    position: relative;
    padding: 72px 0 56px;
    text-align: center;
    background: var(--tb-bg);
}

/* 网格渐变背景层 */
.home-hero-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 600px 400px at 25% 20%, var(--tb-primary-soft) 0%, transparent 60%),
        radial-gradient(ellipse 500px 350px at 75% 30%, var(--tb-c4-bg) 0%, transparent 55%),
        radial-gradient(ellipse 400px 300px at 50% 80%, var(--tb-c3-bg) 0%, transparent 50%);
    opacity: .7;
    pointer-events: none;
    z-index: 0;
}
[data-theme="dark"] .home-hero-mesh {
    opacity: .25;
}

.home-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 徽章 */
.home-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    border-radius: 100px;
    background: var(--tb-surface);
    color: var(--tb-primary-hover);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid var(--tb-border);
    box-shadow: var(--tb-shadow-sm);
}

/* H1 大标题 */
.home-title {
    font-size: 38px;
    font-weight: 800;
    color: var(--tb-text);
    margin: 0 0 14px;
    letter-spacing: -.8px;
    line-height: 1.2;
}
.home-title strong {
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}
.home-title-accent {
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 副标题 */
.home-sub {
    font-size: 15px;
    color: var(--tb-text-2);
    margin: 0 0 32px;
    line-height: 1.7;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* 搜索框 — 玻璃态 */
.home-search {
    position: relative;
    max-width: 560px;
    margin: 0 auto;
    z-index: 50;
}
.home-search-ico {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--tb-text-3);
    pointer-events: none;
    z-index: 1;
}
.home-search-ico svg { width: 18px; height: 18px; }
.home-search-input {
    width: 100%;
    height: 52px;
    padding: 0 80px 0 48px;
    border: 1px solid var(--tb-border);
    border-radius: 16px;
    background: var(--tb-surface);
    color: var(--tb-text);
    font-size: 15px;
    outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
    box-sizing: border-box;
    font-family: inherit;
    box-shadow: 0 2px 12px rgba(45,42,36,.06);
}
.home-search-input:focus {
    border-color: var(--tb-primary);
    box-shadow: 0 0 0 4px var(--tb-primary-soft), 0 4px 20px rgba(217,119,87,.10);
    background: var(--tb-surface);
}

/* Ctrl+K 提示 */
.home-search-kbd {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    margin-top: 0;
    padding: 3px 10px;
    border: 1px solid var(--tb-border-strong);
    border-radius: 7px;
    background: var(--tb-bg-alt);
    color: var(--tb-text-3);
    font-size: 11px;
    font-family: var(--tb-font-mono);
    line-height: 1.5;
    pointer-events: none;
    user-select: none;
    font-weight: 600;
}

.home-search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    border: none;
    background: var(--tb-border);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tb-text-2);
    padding: 0;
}
.home-search-clear svg { width: 14px; height: 14px; }
.home-search-clear:hover { background: var(--tb-primary); color: #fff; }

/* 搜索下拉浮窗 */
.home-search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: 14px;
    box-shadow: 0 12px 40px rgba(45,42,36,.12);
    overflow: hidden;
    z-index: 100;
    max-height: 400px;
    overflow-y: auto;
}
.home-search-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--tb-border);
    color: var(--tb-text);
    text-decoration: none;
    transition: background .12s;
}
.home-search-item:last-child { border-bottom: none; }
.home-search-item:hover { background: var(--tb-surface-hover); }
.home-search-item-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--tb-text);
    flex-shrink: 0;
}
.home-search-item-cat {
    font-size: 11px;
    color: var(--tb-text-3);
    background: var(--tb-bg-alt);
    padding: 2px 8px;
    border-radius: 100px;
    flex-shrink: 0;
    font-weight: 600;
}
.home-search-item-desc {
    font-size: 12px;
    color: var(--tb-text-3);
    margin-left: auto;
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.home-search-empty {
    padding: 24px 16px;
    text-align: center;
    color: var(--tb-text-3);
    font-size: 13px;
}

/* 热门标签 */
.home-hot {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    align-items: center;
}
.home-hot-label {
    font-size: 12px;
    color: var(--tb-text-3);
    margin-right: 4px;
    font-weight: 600;
}
.home-hot a {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    color: var(--tb-text-2);
    font-size: 13px;
    text-decoration: none;
    transition: all .15s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--tb-shadow-sm);
}
.home-hot a:hover {
    color: var(--tb-primary);
    border-color: var(--tb-primary);
    background: var(--tb-primary-soft);
    transform: translateY(-1px);
}

/* ============================================================
   特性条 — 紧凑一行四列
   ============================================================ */
.home-features {
    padding: 0 20px;
    background: var(--tb-bg);
}
.home-features-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 20px 0;
}
.home-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius-lg);
    box-shadow: var(--tb-shadow-sm);
    transition: box-shadow .2s, transform .2s;
}
.home-feature:hover {
    box-shadow: var(--tb-shadow);
    transform: translateY(-2px);
}
.home-feature-ico {
    font-size: 24px;
    flex-shrink: 0;
    line-height: 1;
}
.home-feature-h {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--tb-text);
    line-height: 1.3;
}
.home-feature-d {
    display: block;
    font-size: 12px;
    color: var(--tb-text-3);
    line-height: 1.4;
    margin-top: 2px;
}

/* ============================================================
   通用 section 标题
   ============================================================ */
.home-section-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--tb-text);
    margin: 0 0 8px;
    letter-spacing: -.3px;
    text-align: center;
}
.home-section-sub {
    font-size: 14px;
    color: var(--tb-text-2);
    text-align: center;
    margin: 0 0 36px;
}

/* ============================================================
   分类概览 — 卡片网格（点击展开工具）
   ============================================================ */
.home-showcase {
    padding: 56px 20px;
    background: var(--tb-bg);
}
.home-showcase-inner {
    max-width: 1200px;
    margin: 0 auto;
}
.home-cat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.home-cat-card {
    display: block;
    padding: 22px 24px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius-lg);
    box-shadow: var(--tb-shadow-sm);
    text-decoration: none;
    transition: border-color .2s, box-shadow .2s;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    scroll-margin-top: 70px;
}
.home-cat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--cat-c, var(--tb-primary));
    opacity: .8;
}
.home-cat-card::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, var(--cat-bg, var(--tb-primary-soft)) 0%, transparent 70%);
    opacity: .4;
    pointer-events: none;
}
.home-cat-card:hover {
    border-color: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 30%, var(--tb-border));
    box-shadow: 0 6px 20px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 8%, rgba(45,42,36,.06));
}
.home-cat-card.open {
    border-color: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 40%, var(--tb-border));
    box-shadow: 0 8px 28px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 12%, rgba(45,42,36,.08));
}
.home-cat-card-head {
    display: flex;
    align-items: center;
    gap: 14px;
    position: relative;
    z-index: 1;
}
.home-cat-card-ico {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 11px;
    background: var(--cat-bg, var(--tb-primary-soft));
    color: var(--cat-c, var(--tb-primary));
}
.home-cat-card-ico svg { width: 21px; height: 21px; }
.home-cat-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--tb-text);
    margin: 0;
    flex: 1;
}
.home-cat-card-count {
    font-size: 12px;
    color: var(--tb-text-3);
    font-weight: 600;
}
.home-cat-card-arrow {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tb-text-3);
    transition: transform .25s cubic-bezier(.4,0,.2,1);
}
.home-cat-card-arrow svg { width: 18px; height: 18px; }
.home-cat-card.open .home-cat-card-arrow {
    transform: rotate(180deg);
    color: var(--cat-c, var(--tb-primary));
}
.home-cat-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
    position: relative;
    z-index: 1;
}
.home-cat-tag {
    font-size: 12px;
    color: var(--tb-text-2);
    background: var(--tb-bg-alt);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 500;
}
.home-cat-card.open .home-cat-tag { opacity: .6; }

/* 展开后的工具链接网格 */
.home-cat-card-body {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s cubic-bezier(.4,0,.2,1);
    position: relative;
    z-index: 1;
}
.home-cat-card.open .home-cat-card-body {
    max-height: 800px;
    padding-top: 16px;
    border-top: 1px solid var(--tb-border);
    margin-top: 16px;
}
.home-cat-tool {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--tb-radius-sm);
    background: var(--tb-surface-2);
    border: 1px solid transparent;
    color: var(--tb-text);
    font-size: 13px;
    text-decoration: none;
    transition: all .18s cubic-bezier(.4,0,.2,1);
    overflow: hidden;
    position: relative;
}
.home-cat-tool::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cat-c, var(--tb-primary));
    opacity: .4;
    flex-shrink: 0;
    transition: opacity .18s;
}
.home-cat-tool:hover {
    background: var(--tb-surface);
    border-color: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 25%, var(--tb-border));
    color: var(--cat-c, var(--tb-primary));
    transform: translateY(-2px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 10%, rgba(45,42,36,.06));
}
.home-cat-tool:hover::before {
    opacity: 1;
}

/* 工具名称为主，描述默认隐藏 */
.home-cat-tool-name {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}
.home-cat-tool-desc { display: none; }

@media (max-width: 767px) {
    .home-cat-card-body {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================================
   三步使用指南 — 卡片式 + 连接线
   ============================================================ */
.home-steps {
    padding: 56px 20px;
    background: var(--tb-bg-alt);
    border-top: 1px solid var(--tb-border);
}
.home-steps-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}
.home-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
}
/* 连接线 */
.home-steps-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 16.6%;
    right: 16.6%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tb-border-strong), var(--tb-border-strong), transparent);
    z-index: 0;
}
.home-step {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 24px 20px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius-lg);
    box-shadow: var(--tb-shadow-sm);
    transition: box-shadow .2s, transform .2s;
}
.home-step:hover {
    box-shadow: var(--tb-shadow);
    transform: translateY(-3px);
}
.home-step-ico {
    font-size: 28px;
    display: block;
    margin-bottom: 8px;
    line-height: 1;
}
.home-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-primary-hover));
    color: #fff;
    font-size: 14px;
    font-weight: 800;
    margin-bottom: 10px;
    box-shadow: 0 2px 8px rgba(217,119,87,.25);
}
.home-step-h {
    font-size: 16px;
    font-weight: 700;
    color: var(--tb-text);
    margin: 0 0 6px;
}
.home-step-p {
    font-size: 13px;
    color: var(--tb-text-2);
    margin: 0;
    line-height: 1.6;
}

/* ============================================================
   CTA 行动召唤
   ============================================================ */
.home-cta {
    padding: 56px 20px 64px;
    text-align: center;
    background: var(--tb-bg);
}
.home-cta-inner {
    max-width: 560px;
    margin: 0 auto;
}
.home-cta-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--tb-text);
    margin: 0 0 8px;
    letter-spacing: -.3px;
}
.home-cta-sub {
    font-size: 14px;
    color: var(--tb-text-2);
    margin: 0 0 24px;
}
.home-cta-btn {
    display: inline-block;
    padding: 14px 40px;
    border-radius: 100px;
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-primary-hover));
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(217,119,87,.25);
    transition: transform .15s, box-shadow .15s;
}
.home-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(217,119,87,.30);
    color: #fff;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 991px) {
    .home-features-inner { grid-template-columns: repeat(2, 1fr); }
    .home-cat-cards { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .home-hero { padding: 44px 0 36px; }
    .home-badge { font-size: 12px; padding: 5px 14px; margin-bottom: 18px; }
    .home-title { font-size: 28px; }
    .home-sub { font-size: 14px; margin-bottom: 24px; }
    .home-search-input { height: 46px; font-size: 14px; border-radius: 14px; }
    .home-search-kbd { display: none; }
    .home-hot { margin-top: 18px; }
    .home-hot a { font-size: 12px; padding: 5px 14px; }

    .home-features-inner { grid-template-columns: 1fr 1fr; gap: 10px; padding: 12px 0; }
    .home-feature { padding: 12px 14px; gap: 10px; }
    .home-feature-ico { font-size: 20px; }
    .home-feature-h { font-size: 13px; }
    .home-feature-d { font-size: 11px; }

    .home-section-title { font-size: 22px; }
    .home-showcase { padding: 40px 16px; }

    .home-steps { padding: 40px 16px; }
    .home-steps-grid { grid-template-columns: 1fr; gap: 16px; }
    .home-steps-grid::before { display: none; }
    .home-step { padding: 20px 16px; }
    .home-step-ico { font-size: 24px; }
    .home-step-num { width: 28px; height: 28px; font-size: 13px; }

    .home-cta { padding: 40px 16px 48px; }
    .home-cta-title { font-size: 24px; }
    .home-cta-btn { padding: 12px 32px; font-size: 15px; }
}

/* ============================================================
   Modern v2 — 参考 tools.video 的视觉语言升级
   追加于文件末尾以获得级联优先；亮暗两套均适配
   ============================================================ */

/* ---------- Hero 极光背景 v2：更大更艳、缓慢漂移 ---------- */
.home-hero-mesh {
    opacity: 1;
    background:
        radial-gradient(ellipse 720px 520px at 18% 12%, color-mix(in srgb, var(--tb-primary) 22%, transparent) 0%, transparent 62%),
        radial-gradient(ellipse 640px 480px at 82% 18%, color-mix(in srgb, var(--tb-c4) 20%, transparent) 0%, transparent 60%),
        radial-gradient(ellipse 560px 420px at 68% 85%, color-mix(in srgb, var(--tb-c3) 16%, transparent) 0%, transparent 58%),
        radial-gradient(ellipse 480px 380px at 32% 78%, color-mix(in srgb, var(--tb-c2) 14%, transparent) 0%, transparent 56%);
    animation: aurora-drift 18s ease-in-out infinite alternate;
}
[data-theme="dark"] .home-hero-mesh {
    opacity: .45;
}
@keyframes aurora-drift {
    0%   { transform: translate3d(0,0,0) scale(1); filter: hue-rotate(0deg); }
    50%  { transform: translate3d(-2%,-2%,0) scale(1.06); }
    100% { transform: translate3d(2%,1.5%,0) scale(1.02); filter: hue-rotate(14deg); }
}

/* ---------- 标题：更大更有气场，accent 流光 ---------- */
.home-title {
    font-size: clamp(40px, 4.6vw, 58px);
    letter-spacing: -1.5px;
    font-weight: 900;
}
.home-title strong,
.home-title-accent {
    background: linear-gradient(120deg, var(--tb-primary) 0%, var(--tb-primary-hover) 38%, var(--tb-c4) 70%, var(--tb-primary) 100%);
    background-size: 220% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: title-flow 6s ease-in-out infinite;
}
@keyframes title-flow {
    0%, 100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
}
.home-sub {
    font-size: 16px;
    max-width: 600px;
}

/* 徽章呼吸光 */
.home-badge {
    animation: badge-pulse 3.2s ease-in-out infinite;
}
@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--tb-primary) 26%, transparent), var(--tb-shadow-sm); }
    50%      { box-shadow: 0 0 0 9px transparent, var(--tb-shadow-sm); }
}

/* ---------- 搜索框：白玻璃+悬停微抬 ---------- */
.home-search-input {
    height: 56px;
    border-radius: 100px;
    border-color: var(--tb-border-strong);
    box-shadow: 0 6px 24px rgba(45,42,36,.08);
    transition: border-color .2s, box-shadow .25s, transform .25s;
}
.home-search-input:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 34px color-mix(in srgb, var(--tb-primary) 16%, rgba(45,42,36,.08));
}

/* ---------- 热门标签：彩色圆点 chips（参考站语言） ---------- */
.home-hot-label {
    padding: 5px 14px;
    border-radius: 100px;
    background: color-mix(in srgb, var(--tb-warn) 12%, transparent);
    color: color-mix(in srgb, var(--tb-warn) 72%, var(--tb-text));
    font-weight: 700;
}
.home-hot a {
    position: relative;
    padding-left: 26px;
    border: none;
    background: color-mix(in srgb, var(--tb-text) 4%, var(--tb-surface));
    box-shadow: inset 0 0 0 1px var(--tb-border), var(--tb-shadow-none, 0 0 0 transparent);
}
.home-hot a::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    width: 7px;
    height: 7px;
    margin-top: -3.5px;
    border-radius: 50%;
    background: var(--dot-c, var(--tb-primary));
    transition: transform .15s;
}
.home-hot a:nth-of-type(7n+1)::before { background: var(--tb-c1); }
.home-hot a:nth-of-type(7n+2)::before { background: var(--tb-c2); }
.home-hot a:nth-of-type(7n+3)::before { background: var(--tb-c3); }
.home-hot a:nth-of-type(7n+4)::before { background: var(--tb-c4); }
.home-hot a:nth-of-type(7n+5)::before { background: var(--tb-c5); }
.home-hot a:nth-of-type(7n+6)::before { background: var(--tb-c6); }
.home-hot a:nth-of-type(7n+7)::before { background: var(--tb-c7); }
.home-hot a:hover {
    color: var(--tb-text);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(45,42,36,.12);
}
.home-hot a:hover::before { transform: scale(1.45); }

/* ---------- 特性条：玻璃拟态 + 图标彩底 ---------- */
.home-features-inner { gap: 18px; }
.home-feature {
    background: color-mix(in srgb, var(--tb-surface) 72%, transparent);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border: 1px solid color-mix(in srgb, var(--tb-border) 80%, transparent);
    box-shadow: none;
    border-radius: 16px;
}
.home-feature:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(45,42,36,.10);
    border-color: color-mix(in srgb, var(--tile-c, var(--tb-primary)) 35%, var(--tb-border));
}
.home-feature:nth-child(1) { --tile-c: var(--tb-c7); }
.home-feature:nth-child(2) { --tile-c: var(--tb-c4); }
.home-feature:nth-child(3) { --tile-c: var(--tb-c5); }
.home-feature:nth-child(4) { --tile-c: var(--tb-c2); }
.home-feature-ico {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    font-size: 22px;
    border-radius: 13px;
    background:
        linear-gradient(135deg,
            color-mix(in srgb, var(--tile-c) 92%, white) 0%,
            var(--tile-c) 100%);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--tile-c) 30%, transparent);
}

/* ---------- 分类卡片：去顶条，图标块渐变化，悬浮强化 ---------- */
.home-cat-card::before { display: none; }
.home-cat-card {
    transition: transform .25s cubic-bezier(.2,.7,.3,1), border-color .2s, box-shadow .25s;
}
.home-cat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 36px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 14%, rgba(45,42,36,.10));
}
.home-cat-card.open {
    box-shadow: 0 14px 40px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 18%, rgba(45,42,36,.12));
}
.home-cat-card-ico {
    border-radius: 13px;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--cat-c, var(--tb-primary)) 88%, white),
        var(--cat-c, var(--tb-primary)));
    color: #fff !important;
    box-shadow: 0 4px 14px color-mix(in srgb, var(--cat-c, var(--tb-primary)) 34%, transparent);
    transition: transform .2s;
}
.home-cat-card:hover .home-cat-card-ico { transform: scale(1.06) rotate(-3deg); }

/* 标签胶囊染色 */
.home-cat-tag {
    border: 1px solid color-mix(in srgb, var(--cat-c, var(--tb-primary)) 22%, transparent);
    background: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 7%, transparent);
    color: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 65%, var(--tb-text));
    border-radius: 100px;
    padding: 4px 12px;
    transition: transform .15s, box-shadow .15s;
}
.home-cat-tag:hover { transform: translateY(-1px); }

/* 展开后的工具行 hover 右滑箭头感 */
.home-cat-tool { border-radius: 10px; }
.home-cat-tool:hover { background: color-mix(in srgb, var(--cat-c, var(--tb-primary)) 6%, transparent); }

/* ---------- 三步指南：数字徽章渐变化 ---------- */
.home-step-num {
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-c4));
    color: #fff;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--tb-primary) 35%, transparent);
}
.home-step-ico {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    font-size: 26px;
    border-radius: 15px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    box-shadow: var(--tb-shadow-sm);
    margin-bottom: 12px;
}
.home-step:hover .home-step-ico { transform: translateY(-3px); transition: transform .2s; }

/* ---------- CTA 按钮：渐变+箭头动效 ---------- */
.home-cta-btn {
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-c5));
    box-shadow: 0 8px 24px color-mix(in srgb, var(--tb-primary) 34%, transparent);
    letter-spacing: .5px;
}
.home-cta-btn:hover {
    box-shadow: 0 12px 32px color-mix(in srgb, var(--tb-primary) 44%, transparent);
    transform: translateY(-2px);
}

/* ---------- 滚动入场动画（app.js 注入 .rv / .in） ---------- */
@media (prefers-reduced-motion: no-preference) {
    .rv {
        opacity: 0;
        transform: translateY(18px);
        will-change: opacity, transform;
    }
    .rv.rv-in {
        opacity: 1;
        transform: none;
        transition: opacity .6s cubic-bezier(.2,.7,.3,1), transform .6s cubic-bezier(.2,.7,.3,1);
    }
}

/* ---------- 卡片入场交错延迟 ---------- */
.home-features-inner .rv:nth-child(2), .home-cat-cards .rv:nth-child(5n+2) { transition-delay: .05s; }
.home-features-inner .rv:nth-child(3), .home-cat-cards .rv:nth-child(5n+3) { transition-delay: .10s; }
.home-features-inner .rv:nth-child(4), .home-cat-cards .rv:nth-child(5n+4) { transition-delay: .15s; }


/* ============================================================
   Modern v3 — 数据统计带 / 双交替横幅 / FAQ / FA 图标适配
   ============================================================ */

/* ---------- 特性/步骤图标 tile 内的 FA 图标居中 ---------- */
.home-feature-ico i,
.home-step-ico i {
    font-size: 20px;
    color: #fff;
}
.home-badge i { color: var(--tb-ok, #3a9d6e); margin-right: 2px; }
.home-hot-label i { color: var(--tb-warn); }
.home-hot-label {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* ---------- 数据统计带 ---------- */
.home-stats {
    padding: 30px 20px 10px;
    background: var(--tb-bg);
}
.home-stats-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.home-stat {
    text-align: center;
    padding: 26px 12px 22px;
    border-radius: 18px;
    background: color-mix(in srgb, var(--sc) 6%, var(--tb-surface));
    border: 1px solid color-mix(in srgb, var(--sc) 14%, transparent);
    transition: transform .25s cubic-bezier(.2,.7,.3,1), box-shadow .25s;
}
.home-stat:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px color-mix(in srgb, var(--sc) 16%, rgba(45,42,36,.10));
}
.home-stat-num {
    display: block;
    font-size: clamp(34px, 3.4vw, 46px);
    font-weight: 900;
    letter-spacing: -1px;
    line-height: 1.1;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--sc) 82%, white),
        var(--sc));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-variant-numeric: tabular-nums;
}
.home-stat-cap {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--tb-text-3);
    font-weight: 600;
}

/* ---------- 双交替横幅 ---------- */
.home-band {
    padding: 64px 20px;
    background: var(--tb-bg);
    overflow: hidden;
}
.home-band.alt {
    background: var(--tb-bg-alt);
}
.home-band-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    align-items: center;
    gap: 48px;
}
.home-band.reverse .home-band-txt { order: 2; }
.home-band.reverse .home-band-card { order: 1; justify-self: end; }
.home-band:not(.reverse) .home-band-card { justify-self: start; }
.home-band-h {
    font-size: clamp(26px, 2.8vw, 36px);
    font-weight: 900;
    letter-spacing: -0.8px;
    line-height: 1.25;
    color: var(--tb-text);
    margin: 0 0 14px;
}
.dot-accent {
    background: linear-gradient(135deg, var(--tb-primary), var(--tb-c4));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.home-band-p {
    font-size: 15px;
    color: var(--tb-text-2);
    line-height: 1.85;
    margin: 0 0 20px;
    max-width: 460px;
}
.home-band-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.chip {
    display: inline-block;
    padding: 6px 15px;
    border-radius: 100px;
    font-size: 12.5px;
    font-weight: 700;
    color: color-mix(in srgb, var(--cc) 68%, var(--tb-text));
    background: color-mix(in srgb, var(--cc) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--cc) 24%, transparent);
}

/* 巨型数字卡（参考站风格） */
.home-band-card {
    position: relative;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1 / 0.92;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: 24px;
    box-shadow: 0 18px 50px rgba(45, 42, 36, .10);
    transition: transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s;
}
.home-band-card:hover {
    transform: translateY(-6px) rotate(-1deg);
    box-shadow: 0 26px 64px rgba(45, 42, 36, .16);
}
.band-ico {
    font-size: 40px;
    color: var(--tb-c7);
    margin-bottom: 8px;
}
.home-band.alt .band-ico { color: var(--tb-primary); }
.band-num {
    font-size: clamp(52px, 5vw, 72px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1;
    color: var(--tb-c7);
    font-variant-numeric: tabular-nums;
}
.home-band.alt .band-num { color: var(--tb-primary); }
.band-unit {
    font-size: .5em;
    font-style: normal;
    margin-left: 2px;
}
.band-cap {
    font-size: 13px;
    color: var(--tb-text-3);
    font-weight: 600;
}

/* ---------- FAQ 手风琴 ---------- */
.home-faq {
    padding: 64px 20px;
    background: var(--tb-bg-alt);
}
.home-faq-inner {
    max-width: 760px;
    margin: 0 auto;
}
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: 14px;
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.faq-item[open] {
    border-color: color-mix(in srgb, var(--tb-primary) 32%, var(--tb-border));
    box-shadow: 0 8px 28px color-mix(in srgb, var(--tb-primary) 9%, rgba(45,42,36,.08));
}
.faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 17px 20px;
    font-size: 15px;
    font-weight: 700;
    color: var(--tb-text);
    user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    border-radius: 50%;
    background: var(--tb-bg-alt);
    color: var(--tb-text-3);
    transition: transform .25s cubic-bezier(.2,.7,.3,1), background .25s, color .25s;
}
.faq-item[open] summary i {
    transform: rotate(135deg);
    background: var(--tb-primary);
    color: #fff;
}
.faq-a {
    padding: 0 20px 18px;
    font-size: 14px;
    line-height: 1.85;
    color: var(--tb-text-2);
    animation: faq-open .3s ease;
}
@keyframes faq-open {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
}

@media (max-width: 768px) {
    .home-stats-inner { grid-template-columns: repeat(2, 1fr); }
    .home-band-inner { grid-template-columns: 1fr; gap: 28px; }
    .home-band.reverse .home-band-txt { order: 1; }
    .home-band.reverse .home-band-card { order: 2; justify-self: center; }
    .home-band:not(.reverse) .home-band-card { justify-self: center; }
    .home-band { padding: 44px 20px; }
}


/* ---------- 步骤图标 tile 彩色渐变底（白图标可见性） ---------- */
.home-steps-grid .home-step:nth-child(1) .home-step-ico {
    background: linear-gradient(135deg, color-mix(in srgb, var(--tb-c1) 86%, white), var(--tb-c1));
    border-color: transparent;
    box-shadow: 0 6px 16px color-mix(in srgb, var(--tb-c1) 32%, transparent);
}
.home-steps-grid .home-step:nth-child(2) .home-step-ico {
    background: linear-gradient(135deg, color-mix(in srgb, var(--tb-c4) 86%, white), var(--tb-c4));
    border-color: transparent;
    box-shadow: 0 6px 16px color-mix(in srgb, var(--tb-c4) 32%, transparent);
}
.home-steps-grid .home-step:nth-child(3) .home-step-ico {
    background: linear-gradient(135deg, color-mix(in srgb, var(--tb-c7) 86%, white), var(--tb-c7));
    border-color: transparent;
    box-shadow: 0 6px 16px color-mix(in srgb, var(--tb-c7) 32%, transparent);
}


/* ============================================================
   Modern v4 — 板块背景交替 + FAB 给回顶按钮让位
   ============================================================ */

/* 统计带改用次级底色，与前后板块形成交替 */
.home-stats {
    background: var(--tb-bg-alt);
}

/* 三步指南显式回归主底色（前接 alt 横幅，后接 alt FAQ） */
.home-steps {
    background: var(--tb-bg);
}


/* ---------- Modern v5: 回顶按钮 FA 图标 + 底部 GitHub 链接 ---------- */
.gotop i {
    display: block;
    font-size: 16px;
    line-height: 40px;
    height: 40px;
    transform: translateY(2px);
}
.copyright .fa-github {
    font-size: 15px;
    margin-right: 3px;
    vertical-align: -2px;
}
.copyright-sep { margin: 0 .6em; opacity: .55; }
.copyright a[href*="github"] { font-weight: 600; }

.gotop i { color: #fff !important; font-size: 16px; }


/* ---------- v6: 搜索下拉浮窗不再被 hero 裁切 ---------- */
.home-hero-mesh { border-radius: 0; }


/* ---------- Modern v6：hero 下拉键盘高亮 ---------- */
.home-search-item.active {
    background: var(--tb-surface-hover);
    border-color: var(--tb-primary);
}
.home-search-item.active .home-search-item-name { color: var(--tb-primary); }

/* ---------- Modern v6：最近使用区块 ---------- */
.home-recent { padding: 8px 0 28px; }
.home-recent .home-section-title i { color: var(--tb-primary); font-size: .8em; margin-right: 6px; }
.home-recent-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 18px;
}
.home-recent-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--tb-border);
    border-radius: 999px;
    background: var(--tb-surface);
    color: var(--tb-text);
    text-decoration: none;
    font-size: 14px;
    transition: border-color .18s, transform .18s, box-shadow .18s;
}
.home-recent-chip:hover {
    border-color: var(--tb-primary);
    color: var(--tb-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 87, .15);
    text-decoration: none;
}
.home-recent-chip-name { font-weight: 600; }
.home-recent-chip-cat {
    font-size: 11px;
    color: var(--tb-text-3);
    border: 1px solid var(--tb-border);
    border-radius: 999px;
    padding: 0 7px;
    background: var(--tb-bg-soft);
}
.home-recent-chip-go { font-size: 11px; color: var(--tb-text-3); }
@media (max-width: 768px) {
    .home-recent-list { gap: 8px; }
    .home-recent-chip { padding: 7px 12px; font-size: 13px; }
}


/* ---------- Modern v8：收藏 chip 取消按钮 ---------- */
.home-recent-chip-star { color: var(--tb-primary); font-size: 11px; }
.home-pin-remove {
    width: 20px;
    height: 20px;
    margin-left: -4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--tb-text-3);
    cursor: pointer;
    font-size: 11px;
    align-self: center;
    transition: background .15s, color .15s;
}
.home-pin-remove:hover { background: rgba(0, 0, 0, .06); color: var(--tb-danger, #dc2626); }


/* ---------- 数据导出/导入（页脚入口） ---------- */
.fdata-btn {
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    font-size: 13px;
    color: inherit;
    opacity: .85;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: opacity .15s, color .15s;
}
.fdata-btn:hover { opacity: 1; color: var(--tb-primary); }
.fdata-btn i { font-size: 12px; }