/* =====================================================================
   主题 t14 · 全屏视频风（videoHero）
   设计语言：巨型渐变 hero + 浮动玻璃卡 + 重阴影 + 玫瑰紫渐变。
   与现有 t1-t8 显著差异：氛围强、卡片玻璃感、悬浮错位堆叠。
   ===================================================================== */

:root {
    --vh-bg: #fbf7ff;
    --vh-bg-alt: #f3eaff;
    --vh-text: #ffffff;
    --vh-text-2: #1f1633;
    --vh-text-soft: #6b5d7e;
    --vh-line: #e3d8f5;
}

body { background: var(--vh-bg); color: var(--vh-text-2); }
a:hover { color: var(--site-primary); }

/* ============================ 页头 ============================ */
.vh-header { position: absolute; left: 0; right: 0; top: 0; z-index: 30; background: transparent; }
body:not(.vh-home) .vh-header { position: sticky; background: rgba(255, 255, 255, .92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--vh-line); }
.vh-header-inner { display: flex; align-items: center; gap: 24px; min-height: 78px; }
.vh-brand { display: flex; align-items: center; gap: 12px; color: inherit; }
.vh-brand-logo { width: 40px; height: 40px; object-fit: contain; border-radius: 10px; background: #fff; padding: 4px; }
.vh-brand-text { font-size: 18px; font-weight: 700; }
body.vh-home .vh-brand-text { color: #fff; }
.vh-nav { display: flex; gap: 20px; margin-left: auto; }
.vh-nav a { padding: 6px 4px; font-size: 15px; color: inherit; border-bottom: 2px solid transparent; }
body.vh-home .vh-nav a { color: rgba(255, 255, 255, .86); }
.vh-nav a:hover { color: var(--site-secondary); border-bottom-color: var(--site-secondary); }
.vh-nav a.is-active { color: var(--site-secondary); border-bottom-color: var(--site-secondary); }
body.vh-home .vh-nav a.is-active { color: #fff; border-bottom-color: #fff; }
.vh-phone { padding: 8px 18px; border: 1px solid currentColor; border-radius: 999px; font-weight: 700; color: inherit; }
body.vh-home .vh-phone { color: #fff; }
.vh-phone:hover { background: var(--site-primary); color: #fff; border-color: var(--site-primary); }

/* 面包屑 */
.vh-crumb { padding: 14px 0; background: var(--vh-bg-alt); border-bottom: 1px solid var(--vh-line); font-size: 13px; color: var(--vh-text-soft); }
.vh-crumb .wrap { display: flex; gap: 8px; align-items: center; }
.vh-crumb a { color: var(--vh-text-soft); }
.vh-crumb a:hover { color: var(--site-primary); }
.vh-crumb i { font-style: normal; opacity: .5; }

/* ============================ Hero ============================ */
.vh-hero {
    position: relative; overflow: hidden;
    min-height: 88vh;
    background: linear-gradient(135deg, var(--site-primary) 0%, var(--site-secondary) 100%);
    color: #fff;
    display: flex; align-items: center;
    isolation: isolate;
}
.vh-hero::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(900px 700px at 80% 30%, rgba(255, 255, 255, .18), transparent 60%),
        radial-gradient(700px 500px at 20% 80%, rgba(0, 0, 0, .25), transparent 60%);
    pointer-events: none;
}
.vh-hero-inner { max-width: 800px; position: relative; z-index: 2; padding-top: 60px; }
.vh-eyebrow { display: inline-block; padding: 4px 14px; background: rgba(255, 255, 255, .18); border-radius: 999px; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 24px; backdrop-filter: blur(8px); }
.vh-hero-title { font-size: clamp(40px, 6vw, 80px); line-height: 1.05; letter-spacing: -2px; font-weight: 800; margin: 0 0 24px; }
.vh-hero-desc { font-size: 18px; color: rgba(255, 255, 255, .86); max-width: 56ch; margin-bottom: 36px; line-height: 1.65; }
.vh-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* 浮动卡 */
.vh-float-cards { position: absolute; right: 4%; bottom: 8%; display: grid; gap: 14px; z-index: 2; max-width: 320px; }
.vh-float-card {
    background: rgba(255, 255, 255, .12);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, .2);
    padding: 18px 20px;
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, .18);
}
.vh-float-no { display: inline-block; padding: 1px 8px; background: rgba(255, 255, 255, .18); border-radius: 4px; font-size: 11px; margin-bottom: 8px; }
.vh-float-card strong { display: block; font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.vh-float-card p { margin: 0; font-size: 13px; opacity: .8; }

/* ============================ 按钮 ============================ */
.vh-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 26px; border: 1px solid transparent; border-radius: 999px; font-size: 15px; font-weight: 600; cursor: pointer; transition: transform .15s ease, box-shadow .18s ease, background .18s ease; }
.vh-btn:hover { transform: translateY(-1px); }
.vh-btn-primary { background: #fff; color: var(--site-primary); box-shadow: 0 12px 32px rgba(0, 0, 0, .15); }
.vh-btn-primary:hover { box-shadow: 0 16px 40px rgba(0, 0, 0, .2); }
.vh-btn-outline { border-color: rgba(255, 255, 255, .5); color: #fff; background: rgba(255, 255, 255, .12); backdrop-filter: blur(8px); }
.vh-btn-outline:hover { background: #fff; color: var(--site-primary); }
.vh-btn-ghost { background: rgba(255, 255, 255, .16); color: #fff; backdrop-filter: blur(8px); border-color: rgba(255, 255, 255, .3); }
.vh-btn-ghost:hover { background: #fff; color: var(--site-primary); }
body:not(.vh-home) .vh-btn-primary { background: var(--site-primary); color: #fff; }
body:not(.vh-home) .vh-btn-outline { border-color: var(--site-primary); color: var(--site-primary); background: transparent; }
body:not(.vh-home) .vh-btn-outline:hover { background: var(--site-primary); color: #fff; }
body:not(.vh-home) .vh-btn-ghost { color: inherit; }
.vh-btn-block { width: 100%; margin-top: 8px; }

/* ============================ 通用节区 ============================ */
.vh-section { padding: calc(80px * var(--site-density)) 0; border-bottom: 1px solid var(--vh-line); }
.vh-section-extra { background: var(--vh-bg-alt); }
.vh-section-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.vh-section-title { display: flex; flex-direction: column; gap: 4px; margin: 0 0 36px; font-size: 14px; letter-spacing: 2px; color: var(--vh-text-soft); text-transform: uppercase; }
.vh-section-title em { font-style: normal; font-size: clamp(26px, 3vw, 36px); color: var(--vh-text-2); font-weight: 800; letter-spacing: -0.5px; text-transform: none; }
.vh-section-more { font-size: 13px; color: var(--site-primary); font-weight: 600; }
.vh-section-more:hover { text-decoration: underline; }
.vh-more { display: inline-block; margin-top: 28px; font-size: 13px; color: var(--site-primary); border-bottom: 1px solid var(--site-primary); padding-bottom: 4px; }
.vh-more:hover { color: var(--site-secondary); border-color: var(--site-secondary); }

/* ============================ 优势 ============================ */
.vh-adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.vh-adv-card {
    padding: 28px 24px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, .08);
    border: 1px solid var(--vh-line);
    transition: transform .15s ease, box-shadow .18s ease;
}
.vh-adv-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(99, 102, 241, .15); }
.vh-adv-no { display: inline-block; padding: 4px 10px; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); color: #fff; font-size: 12px; border-radius: 4px; margin-bottom: 14px; }
.vh-adv-card h3 { font-size: 18px; margin-bottom: 10px; }
.vh-adv-card p { margin: 0; color: var(--vh-text-soft); font-size: 14px; line-height: 1.7; }

/* 产品 */
.vh-prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.vh-prod-card {
    background: #fff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(99, 102, 241, .08);
    border: 1px solid var(--vh-line);
    transition: transform .15s ease, box-shadow .18s ease;
}
.vh-prod-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(99, 102, 241, .18); }
.vh-prod-thumb { display: block; aspect-ratio: 4 / 3; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); position: relative; overflow: hidden; }
.vh-prod-thumb img { width: 100%; height: 100%; object-fit: cover; }
.vh-prod-ph { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; color: #fff; font-size: 18px; font-weight: 700; }
.vh-prod-body { padding: 18px 20px 20px; }
.vh-prod-body h3 { font-size: 16px; margin-bottom: 8px; }
.vh-prod-body h3 a { color: var(--vh-text-2); }
.vh-prod-body h3 a:hover { color: var(--site-primary); }
.vh-prod-body p { font-size: 13px; color: var(--vh-text-soft); margin-bottom: 12px; }
.vh-prod-link { font-size: 12px; color: var(--site-primary); font-weight: 700; letter-spacing: 1px; }
.vh-prod-foot { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px dashed var(--vh-line); font-size: 13px; }
.vh-prod-foot span { color: var(--site-primary); font-weight: 700; }
.vh-prod-foot a { color: var(--vh-text-soft); }
.vh-prod-foot a:hover { color: var(--site-primary); }

/* 产品详情 */
.vh-pd-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.vh-pd-gallery .vh-pd-main { aspect-ratio: 4 / 3; border-radius: 18px; overflow: hidden; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); display: flex; align-items: center; justify-content: center; box-shadow: 0 16px 40px rgba(99, 102, 241, .15); }
.vh-pd-gallery .vh-pd-main img { width: 100%; height: 100%; object-fit: cover; }
.vh-pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.vh-pd-thumbs img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: 8px; cursor: pointer; }
.vh-pd-info h1 { font-size: clamp(28px, 3vw, 42px); margin: 0 0 12px; letter-spacing: -0.5px; }
.vh-pd-sub { font-size: 13px; color: var(--site-primary); letter-spacing: 2px; margin-bottom: 18px; }
.vh-pd-sum { font-size: 15px; color: var(--vh-text-soft); margin-bottom: 18px; line-height: 1.7; }
.vh-pd-price { font-size: 22px; color: var(--site-secondary); font-weight: 800; margin-bottom: 20px; }
.vh-pd-tags { display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 24px; list-style: none; }
.vh-pd-tags li { padding: 4px 12px; background: var(--vh-bg-alt); border: 1px solid var(--vh-line); border-radius: 999px; font-size: 12px; color: var(--vh-text-soft); }
.vh-pd-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--vh-line); font-size: 12px; color: var(--vh-text-soft); }
.vh-pd-badges span { padding: 4px 12px; background: var(--vh-bg-alt); border-radius: 999px; }

/* 参数表 */
.vh-param-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 4px 16px rgba(99, 102, 241, .06); }
.vh-param-table th { width: 200px; padding: 14px 16px; background: var(--vh-bg-alt); text-align: left; font-weight: 600; color: var(--vh-text-soft); border-bottom: 1px solid var(--vh-line); }
.vh-param-table td { padding: 14px 16px; border-bottom: 1px solid var(--vh-line); }

/* 关于 */
.vh-about-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; align-items: start; }
.vh-about-head { position: sticky; top: 100px; }
.vh-about-body { font-size: 15px; line-height: 1.85; }

/* FAQ */
.vh-faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.vh-faq-item {
    background: #fff;
    padding: 20px 24px;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(99, 102, 241, .06);
    border: 1px solid var(--vh-line);
}
.vh-faq-item summary { cursor: pointer; font-weight: 700; font-size: 15px; list-style: none; }
.vh-faq-item summary::-webkit-details-marker { display: none; }
.vh-faq-item summary::after { content: "+"; float: right; font-size: 22px; line-height: 1; color: var(--site-primary); }
.vh-faq-item[open] summary::after { content: "−"; }
.vh-faq-item p { margin: 12px 0 0; color: var(--vh-text-soft); font-size: 13px; }

/* 新闻 */
.vh-news-list { display: grid; gap: 14px; padding: 0; margin: 0; list-style: none; }
.vh-news-list-lg .vh-news-item { padding: 24px; gap: 24px; }
.vh-news-item {
    display: grid; grid-template-columns: 200px 1fr; gap: 18px;
    padding: 18px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(99, 102, 241, .06);
    border: 1px solid var(--vh-line);
    transition: transform .15s ease;
}
.vh-news-item:hover { transform: translateX(4px); }
.vh-news-thumb { display: block; aspect-ratio: 4 / 3; border-radius: 10px; overflow: hidden; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); }
.vh-news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.vh-news-body { display: flex; flex-direction: column; gap: 6px; }
.vh-news-title { font-size: 16px; font-weight: 700; }
.vh-news-title:hover { color: var(--site-primary); }
.vh-news-date { font-size: 12px; color: var(--vh-text-soft); }
.vh-news-meta { display: flex; gap: 10px; font-size: 12px; color: var(--vh-text-soft); }
.vh-news-cat { font-size: 11px; padding: 2px 8px; background: var(--vh-bg-alt); border-radius: 4px; }
.vh-news-sum { margin: 0; color: var(--vh-text-soft); font-size: 13px; }
.vh-news-list-lg .vh-news-title { font-size: 18px; }

/* 筛选 / 分页 */
.vh-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.vh-filter-item { padding: 6px 16px; background: #fff; border: 1px solid var(--vh-line); border-radius: 999px; font-size: 13px; color: var(--vh-text-soft); }
.vh-filter-item:hover { border-color: var(--site-primary); color: var(--site-primary); }
.vh-filter-item.is-active { background: var(--site-primary); color: #fff; border-color: var(--site-primary); }

.vh-pager { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; padding: 28px 0 0; }
.vh-pg-btn, .vh-pg-num { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; height: 38px; padding: 0 14px; background: #fff; border: 1px solid var(--vh-line); border-radius: 999px; font-size: 13px; }
.vh-pg-num.is-active { background: var(--site-primary); color: #fff; border-color: var(--site-primary); }
.vh-pg-total { font-size: 12px; color: var(--vh-text-soft); align-self: center; padding-left: 6px; }

/* 列表头 */
.vh-page-head { padding: 110px 0 56px; background: linear-gradient(135deg, var(--site-primary) 0%, var(--site-secondary) 100%); color: #fff; border-bottom: 1px solid var(--vh-line); }
.vh-page-head h1 { font-size: clamp(34px, 4vw, 52px); font-weight: 800; margin: 0 0 12px; letter-spacing: -1px; }
.vh-page-head p { color: rgba(255, 255, 255, .86); margin: 0; }

/* 文章 */
.vh-article-wrap { display: grid; grid-template-columns: 1fr 320px; gap: 56px; align-items: start; }
.vh-article { font-size: 16px; line-height: 1.85; }
.vh-article-title { font-size: clamp(28px, 3vw, 40px); margin-bottom: 18px; letter-spacing: -0.5px; }
.vh-article-meta { display: flex; flex-wrap: wrap; gap: 14px; padding: 14px 0; border-top: 1px solid var(--vh-line); border-bottom: 1px solid var(--vh-line); margin-bottom: 22px; color: var(--vh-text-soft); font-size: 13px; }
.vh-article-lead { font-size: 17px; color: var(--vh-text-soft); margin-bottom: 24px; padding-left: 14px; border-left: 3px solid var(--site-primary); }
.vh-article-figure { margin: 0 0 28px; border-radius: 14px; overflow: hidden; box-shadow: 0 12px 32px rgba(99, 102, 241, .12); }
.vh-article-figure img { width: 100%; height: auto; }
.vh-article-tags { display: flex; flex-wrap: wrap; gap: 6px; padding: 22px 0 0; margin-top: 24px; border-top: 1px solid var(--vh-line); align-items: center; }
.vh-article-tags em { font-size: 13px; color: var(--vh-text-soft); margin-right: 4px; }
.vh-article-tags span { font-size: 13px; padding: 3px 12px; background: var(--vh-bg-alt); border: 1px solid var(--vh-line); border-radius: 999px; }
.vh-article-block { margin-top: 36px; }
.vh-article-block h2 { font-size: 24px; margin-bottom: 14px; }
.vh-prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--vh-line); font-size: 14px; }
.vh-prev-next a:hover { color: var(--site-primary); }

/* 侧栏 */
.vh-side { display: grid; gap: 16px; position: sticky; top: 100px; }
.vh-side-card { background: #fff; padding: 24px; border-radius: 16px; box-shadow: 0 4px 16px rgba(99, 102, 241, .08); border: 1px solid var(--vh-line); }
.vh-side-card h4 { font-size: 14px; margin: 0 0 14px; color: var(--vh-text-2); font-weight: 700; }
.vh-side-card ul { padding: 0; margin: 0; list-style: none; }
.vh-side-card li { padding: 8px 0; border-bottom: 1px dashed var(--vh-line); display: flex; justify-content: space-between; font-size: 13px; gap: 8px; }
.vh-side-card li:last-child { border-bottom: 0; }
.vh-side-card li em { color: var(--vh-text-soft); }
.vh-side-card p { font-size: 13px; color: var(--vh-text-soft); margin: 0 0 6px; }
.vh-side-phone { color: var(--site-primary) !important; font-size: 22px !important; font-weight: 800; margin-bottom: 12px !important; }

/* 联系 */
.vh-contact-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.vh-contact-list { padding: 0; margin: 0 0 28px; list-style: none; }
.vh-contact-list li { display: grid; grid-template-columns: 120px 1fr; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--vh-line); align-items: baseline; }
.vh-contact-list li:last-child { border-bottom: 0; }
.vh-contact-list li em { color: var(--vh-text-soft); font-size: 13px; letter-spacing: 1px; text-transform: uppercase; }
.vh-contact-list li a, .vh-contact-list li span { font-size: 15px; font-weight: 600; }

/* 留言 */
.vh-message-box { background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); color: #fff; padding: 36px 40px; border-radius: 18px; box-shadow: 0 16px 40px rgba(99, 102, 241, .2); }
.vh-message-box h2 { font-size: 24px; margin-bottom: 8px; }
.vh-message-tip { color: rgba(255, 255, 255, .82); margin-bottom: 24px; font-size: 13px; }
.vh-form-row { margin-bottom: 16px; }
.vh-form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.vh-form-row label { display: block; font-size: 12px; margin-bottom: 4px; color: rgba(255, 255, 255, .78); letter-spacing: 1px; }
.vh-form-row label i { color: #fff; font-style: normal; }
.vh-form-row input, .vh-form-row textarea { width: 100%; padding: 10px 14px; background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .3); border-radius: 8px; color: #fff; font-size: 14px; font-family: inherit; outline: none; transition: background .15s ease, border-color .15s ease; }
.vh-form-row input:focus, .vh-form-row textarea:focus { background: rgba(255, 255, 255, .22); border-color: #fff; }
.vh-form-row textarea { resize: vertical; min-height: 110px; }
.vh-form-row input::placeholder, .vh-form-row textarea::placeholder { color: rgba(255, 255, 255, .5); }
.vh-message-result { margin: 12px 0 0; font-size: 13px; min-height: 1.4em; }
.vh-message-result.is-error { color: #fca5a5; }
.vh-message-result.is-ok { color: #6ee7b7; }

/* 兄弟站点 */
.vh-region-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.vh-region-cloud a { padding: 5px 14px; background: #fff; border: 1px solid var(--vh-line); border-radius: 999px; font-size: 13px; color: var(--vh-text-soft); }
.vh-region-cloud a:hover { background: var(--site-primary); color: #fff; border-color: var(--site-primary); }
.vh-region-cloud-sm a { font-size: 12px; padding: 4px 10px; }
.vh-region-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.vh-region-grid a { font-size: 13px; color: rgba(255, 255, 255, .7); padding: 3px 0; }
.vh-region-grid a:hover { color: #fff; }

/* 空态 */
.vh-empty { padding: 60px 20px; text-align: center; color: var(--vh-text-soft); background: var(--vh-bg-alt); border-radius: 14px; }

/* ============================ CTA ============================ */
.vh-section-cta { background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); color: #fff; border-bottom-color: transparent; }
.vh-section-cta .vh-cta-inner { text-align: center; max-width: 60ch; margin: 0 auto; }
.vh-section-cta h2 { font-size: clamp(28px, 3vw, 38px); margin: 0 0 12px; letter-spacing: -0.5px; }
.vh-section-cta p { color: rgba(255, 255, 255, .85); margin-bottom: 24px; font-size: 14px; }
.vh-section-cta .vh-hero-actions { justify-content: center; margin-bottom: 0; }
.vh-section-cta-sm { padding: calc(56px * var(--site-density)) 0; }

/* ============================ 页脚 ============================ */
.vh-footer { background: linear-gradient(135deg, #1a0f2e 0%, #0d0620 100%); color: rgba(255, 255, 255, .85); padding: calc(80px * var(--site-density)) 0 24px; }
.vh-footer-head { text-align: center; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .1); margin-bottom: 40px; }
.vh-footer-phone { font-size: clamp(40px, 5vw, 64px); margin: 0 0 14px; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.vh-footer-eyebrow { font-size: 13px; color: rgba(255, 255, 255, .55); margin: 0; letter-spacing: 2px; }
.vh-footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.vh-footer h4 { font-size: 13px; letter-spacing: 2px; opacity: .55; margin: 0 0 12px; }
.vh-footer a, .vh-footer p { display: block; font-size: 13px; color: rgba(255, 255, 255, .78); margin: 0 0 6px; }
.vh-footer a:hover { color: var(--site-secondary); }
.vh-footer-bottom { display: flex; flex-wrap: wrap; gap: 18px; padding-top: 20px; font-size: 12px; color: rgba(255, 255, 255, .45); }
.vh-footer-bottom a { display: inline; color: inherit; }
.vh-footer-bottom a:hover { color: var(--site-secondary); }

/* ============================ 404 ============================ */
.vh-band-404 { padding: calc(140px * var(--site-density)) 0; text-align: center; }
.vh-404-code { font-size: clamp(120px, 16vw, 200px); font-weight: 800; line-height: 1; letter-spacing: -4px; background: linear-gradient(135deg, var(--site-primary), var(--site-secondary)); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 18px; }
.vh-band-404 h1 { font-size: 26px; margin-bottom: 10px; }
.vh-404-desc { color: var(--vh-text-soft); margin-bottom: 26px; }
.vh-404 .vh-hero-actions { justify-content: center; margin-bottom: 32px; }
.vh-404-links p { font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--vh-text-soft); margin-bottom: 14px; }

/* ============================ 响应式 ============================ */
@media (max-width: 1024px) {
    .vh-hero { min-height: 70vh; }
    .vh-float-cards { display: none; }
    .vh-adv-grid, .vh-prod-grid, .vh-faq-grid { grid-template-columns: repeat(2, 1fr); }
    .vh-pd-wrap, .vh-about-grid, .vh-contact-wrap, .vh-article-wrap { grid-template-columns: 1fr; gap: 40px; }
    .vh-side, .vh-about-head { position: static; }
}
@media (max-width: 720px) {
    .vh-phone { display: none; }
    .vh-adv-grid, .vh-prod-grid, .vh-faq-grid { grid-template-columns: 1fr; }
    .vh-news-item { grid-template-columns: 1fr; }
    .vh-form-row-2 { grid-template-columns: 1fr; }
    .vh-message-box { padding: 26px; }
    .vh-nav { gap: 16px; }
    .vh-nav a { font-size: 13px; }
    .vh-contact-list li { grid-template-columns: 90px 1fr; }
}