/* ============================================================
   交飞官网 · 新设计系统（SSR 版）
   品牌色：橙 #fe5a0e / 深紫 #3B3663；支持亮暗主题（data-theme）
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --brand: #fe5a0e;
  --brand-2: #ff8a3d;
  --purple: #3B3663;
  --purple-deep: #241f47;
  --bg: #f6f7fb;
  --bg-soft: #eef0f7;
  --card: #ffffff;
  --ink: #262a35;
  --ink-2: #5c6373;
  --ink-3: #9298a8;
  --line: #e6e8f0;
  --ok: #1fa971; --trial: #e6a23c; --beta: #7b6cf0;
  --shadow: 0 8px 28px rgba(38, 32, 90, .09);
  --shadow-lg: 0 18px 50px rgba(38, 32, 90, .16);
  --nav-h: 66px;
  --radius: 14px;
}
[data-theme="dark"] {
  --bg: #14131f; --bg-soft: #1b1a2a; --card: #1e1d30;
  --ink: #e8e9f2; --ink-2: #a6abc0; --ink-3: #6d7288; --line: #2c2b42;
  --shadow: 0 8px 28px rgba(0,0,0,.35);
  --shadow-lg: 0 18px 50px rgba(0,0,0,.5);
}
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.7;
  -webkit-font-smoothing: antialiased; transition: background .25s, color .25s;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1180px, 92%); margin: 0 auto; }

/* ============ 导航 ============ */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { height: 100%; display: flex; align-items: center; gap: 26px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--ink); }
.nav-logo .mark {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-size: 14px; letter-spacing: 1px;
}
.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav-links a {
  padding: 8px 14px; border-radius: 9px; color: var(--ink-2); font-size: 14.5px; transition: .18s;
}
.nav-links a:hover { color: var(--ink); background: var(--bg-soft); }
.nav-links a.on { color: var(--brand); font-weight: 600; background: color-mix(in srgb, var(--brand) 10%, transparent); }
.nav-toggle { display: none; margin-left: auto; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .2s; }
.theme-btn {
  margin-left: 10px; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg-soft); cursor: pointer; font-size: 16px; display: grid; place-items: center; transition: .18s;
}
.theme-btn:hover { border-color: var(--brand); transform: rotate(15deg); }

/* ============ Hero ============ */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(720px 340px at 85% 18%, rgba(254,90,14,.38), transparent 65%),
    radial-gradient(560px 300px at 8% 88%, rgba(122,108,240,.32), transparent 60%),
    linear-gradient(140deg, var(--purple) 0%, var(--purple-deep) 70%);
}
.hero::before {
  content: ''; position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(700px 420px at 30% 40%, #000, transparent);
}
.hero-inner { position: relative; padding: 92px 0 72px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 30px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); font-size: 13px; margin-bottom: 18px;
}
.hero-tag i { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-2); box-shadow: 0 0 10px var(--brand-2); }
.hero h1 { font-size: clamp(30px, 4.4vw, 48px); line-height: 1.25; font-weight: 800; letter-spacing: 1px; }
.hero h1 em { font-style: normal; background: linear-gradient(92deg, var(--brand-2), #ffd29a); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin-top: 16px; font-size: 16.5px; color: #c8c9de; max-width: 560px; }
.hero-cta { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; display: grid; place-items: center; }
.hero-visual .ring {
  width: min(380px, 80%); aspect-ratio: 1; border-radius: 50%;
  background: conic-gradient(from 210deg, rgba(254,90,14,.85), rgba(122,108,240,.5), rgba(255,255,255,.08), rgba(254,90,14,.85));
  filter: blur(2px); position: relative; animation: spin 18s linear infinite;
}
.hero-visual .ring::after {
  content: ''; position: absolute; inset: 14px; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #4a4478, var(--purple-deep));
  box-shadow: inset 0 0 60px rgba(0,0,0,.45), 0 20px 60px rgba(0,0,0,.4);
}
.hero-visual .core {
  position: absolute; text-align: center; font-weight: 700; font-size: 20px; letter-spacing: 2px;
}
.hero-visual .core small { display: block; font-weight: 400; font-size: 12px; color: #b9bce0; letter-spacing: 4px; margin-top: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 数据统计条 */
.stats-band {
  position: relative; margin-top: -34px; z-index: 2;
  background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow-lg); display: grid; grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
}
.stats-band .cell { text-align: center; padding: 22px 10px; border-left: 1px solid var(--line); }
.stats-band .cell:first-child { border-left: none; }
.stats-band b { display: block; font-size: 26px; color: var(--brand); font-weight: 800; }
.stats-band span { color: var(--ink-2); font-size: 13px; }

/* ============ 区块通用 ============ */
.section { padding: 74px 0; }
.section.alt { background: var(--bg-soft); }
.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head .kicker { color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: 3px; }
.sec-head h2 { font-size: clamp(24px, 3vw, 32px); margin-top: 8px; letter-spacing: 1px; }
.sec-head p { color: var(--ink-2); margin-top: 10px; max-width: 640px; margin-inline: auto; }
.sec-more { text-align: center; margin-top: 36px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 24px; border-radius: 10px;
  font-size: 14.5px; font-weight: 600; cursor: pointer; border: none; transition: .2s; font-family: inherit;
}
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; box-shadow: 0 6px 18px rgba(254,90,14,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(254,90,14,.45); }
.btn-ghost { background: transparent; color: inherit; border: 1.5px solid currentColor; opacity: .85; }
.btn-ghost:hover { opacity: 1; transform: translateY(-2px); }
.btn-light { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.btn-light:hover { background: rgba(255,255,255,.2); }

/* ============ 产品卡片 ============ */
.grid-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.p-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .25s; display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }
.p-cover { position: relative; aspect-ratio: 16/9; background: var(--bg-soft); overflow: hidden; }
.p-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.p-card:hover .p-cover img { transform: scale(1.06); }
.p-cover .cat {
  position: absolute; top: 12px; left: 12px; padding: 4px 12px; border-radius: 20px;
  background: rgba(20,18,40,.62); color: #fff; font-size: 12px; backdrop-filter: blur(6px);
}
.p-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.p-body h3 { font-size: 16.5px; }
.p-body h3 a:hover { color: var(--brand); }
.p-body p { color: var(--ink-2); font-size: 13.5px; margin-top: 8px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-meta { margin-top: 14px; display: flex; align-items: center; justify-content: space-between; }
.ver-badge { font-size: 12px; color: var(--brand); background: color-mix(in srgb, var(--brand) 10%, transparent); padding: 3px 10px; border-radius: 20px; font-weight: 600; }
.ver-badge.none { color: var(--ink-3); background: var(--bg-soft); }
.p-meta .go { color: var(--ink-3); font-size: 13px; transition: .2s; }
.p-card:hover .go { color: var(--brand); transform: translateX(4px); }

/* 分类筛选 */
.chips { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 36px; }
.chip {
  padding: 8px 20px; border-radius: 30px; border: 1px solid var(--line); background: var(--card);
  color: var(--ink-2); cursor: pointer; font-size: 13.5px; transition: .18s; font-family: inherit;
}
.chip:hover { border-color: var(--brand); color: var(--brand); }
.chip.on { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; border-color: transparent; box-shadow: 0 5px 14px rgba(254,90,14,.3); }

/* ============ 应用领域 ============ */
.grid-areas { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.area-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; transition: .25s; position: relative; overflow: hidden;
}
.area-card::after {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2)); transform: scaleX(0); transition: .3s;
}
.area-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.area-card:hover::after { transform: scaleX(1); }
.area-card .ico {
  width: 54px; height: 54px; margin: 0 auto 14px; border-radius: 14px; display: grid; place-items: center;
  font-size: 24px; background: color-mix(in srgb, var(--brand) 10%, transparent);
}
.area-card h3 { font-size: 15.5px; }
.area-card p { color: var(--ink-2); font-size: 13px; margin-top: 8px; }

/* ============ 关于简块 ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; }
.about-grid h2 { font-size: 26px; margin-bottom: 16px; }
.about-grid p { color: var(--ink-2); margin-bottom: 12px; }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.about-points .pt {
  background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--brand);
  border-radius: 10px; padding: 13px 16px; font-size: 13.5px;
}
.about-points .pt b { display: block; color: var(--ink); }
.about-points .pt span { color: var(--ink-2); font-size: 12.5px; }
.strategy { display: grid; gap: 14px; }
.strategy .s-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px;
  display: flex; gap: 18px; align-items: flex-start; transition: .2s;
}
.strategy .s-item:hover { border-color: color-mix(in srgb, var(--brand) 40%, var(--line)); }
.strategy .num {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  font-size: 20px; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--purple), #57509b);
}
.strategy b { display: block; margin-bottom: 4px; }
.strategy span { color: var(--ink-2); font-size: 13.5px; }

/* ============ 联系 CTA ============ */
.cta {
  color: #fff; text-align: center;
  background:
    radial-gradient(560px 260px at 80% 10%, rgba(254,90,14,.35), transparent 60%),
    linear-gradient(135deg, var(--purple), var(--purple-deep));
}
.cta .wrap { padding: 64px 0; }
.cta h2 { font-size: clamp(22px, 3vw, 30px); }
.cta p { color: #c8c9de; margin-top: 12px; }
.cta .row { margin-top: 26px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============ 产品详情 ============ */
.crumb { color: var(--ink-3); font-size: 13px; padding: 22px 0 0; }
.crumb a:hover { color: var(--brand); }
.pd-head {
  margin-top: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow); display: grid; grid-template-columns: 460px 1fr; overflow: hidden;
}
.pd-head .cover { position: relative; min-height: 300px; background: var(--bg-soft); }
.pd-head .cover img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.pd-head .info { padding: 34px 38px; }
.pd-head h1 { font-size: 27px; }
.pd-badges { display: flex; gap: 10px; margin: 14px 0; flex-wrap: wrap; }
.badge { font-size: 12.5px; padding: 4px 13px; border-radius: 20px; font-weight: 600; }
.badge.cat { background: color-mix(in srgb, var(--purple) 12%, transparent); color: var(--purple); }
[data-theme="dark"] .badge.cat { color: #b3ade0; }
.badge.stable { background: #e6f7f0; color: var(--ok); }
.badge.trial { background: #fdf3e3; color: var(--trial); }
.badge.beta { background: #eeecff; color: var(--beta); }
[data-theme="dark"] .badge.stable { background: rgba(31,169,113,.16); }
[data-theme="dark"] .badge.trial { background: rgba(230,162,60,.16); }
[data-theme="dark"] .badge.beta { background: rgba(123,108,240,.16); }
.pd-head .short { color: var(--ink-2); font-size: 15px; }
.pd-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.pd-cols { display: grid; grid-template-columns: 1fr 360px; gap: 26px; margin-top: 26px; align-items: start; }
.pd-main .card, .pd-side .card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; margin-bottom: 22px;
}
.card h3 { font-size: 17px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.card .prose { color: var(--ink-2); }
.card .prose p { margin-bottom: 10px; }
.units li { list-style: none; padding: 8px 0 8px 24px; position: relative; color: var(--ink-2); border-bottom: 1px dashed var(--line); }
.units li:last-child { border-bottom: none; }
.units li::before { content: '◆'; position: absolute; left: 2px; color: var(--brand); font-size: 11px; top: 12px; }
video { width: 100%; border-radius: 10px; background: #000; }

/* 版本侧栏 */
.ver-cur { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.ver-cur select {
  flex: 1; padding: 9px 12px; border-radius: 9px; border: 1px solid var(--line);
  background: var(--bg-soft); color: var(--ink); font-size: 14px; font-family: inherit; cursor: pointer;
}
.ver-date { color: var(--ink-3); font-size: 13px; margin-bottom: 12px; }
.ver-summary { color: var(--ink-2); font-size: 13.5px; background: var(--bg-soft); border-radius: 9px; padding: 10px 14px; margin-bottom: 14px; }
.note-tags { display: flex; flex-direction: column; gap: 7px; }
.note-item { display: flex; gap: 9px; font-size: 13px; color: var(--ink-2); align-items: baseline; }
.note-tag { flex-shrink: 0; font-size: 11.5px; font-weight: 700; padding: 1.5px 9px; border-radius: 6px; }
.nt-new { background: #e6f7f0; color: #157a54; }
.nt-opt { background: #e8f1fd; color: #2563b0; }
.nt-fix { background: #fdeeea; color: #c25438; }
.nt-sec { background: #fdeaf3; color: #b03a72; }
.nt-other { background: var(--bg-soft); color: var(--ink-3); }
[data-theme="dark"] .nt-new { background: rgba(31,169,113,.15); color: #5fd4a4; }
[data-theme="dark"] .nt-opt { background: rgba(37,99,176,.2); color: #7db3f0; }
[data-theme="dark"] .nt-fix { background: rgba(194,84,56,.16); color: #f09a7f; }
[data-theme="dark"] .nt-sec { background: rgba(176,58,114,.16); color: #ef8fc0; }
.dl-list { display: flex; flex-direction: column; gap: 9px; }
.dl-item {
  display: flex; align-items: center; gap: 11px; padding: 11px 14px; border: 1px solid var(--line);
  border-radius: 10px; transition: .18s; font-size: 13.5px;
}
.dl-item:hover { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 5%, transparent); }
.dl-item .ico { color: var(--brand); }
.dl-item .nm { flex: 1; }
.dl-item .sz { color: var(--ink-3); font-size: 12px; }
.dl-empty { color: var(--ink-3); font-size: 13px; text-align: center; padding: 14px 0; }

/* 时间线 */
.tl { position: relative; padding-left: 26px; }
.tl::before { content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 26px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -25px; top: 5px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--card); border: 3px solid var(--brand); box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 15%, transparent);
}
.tl-item .tl-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tl-item .tl-head b { font-size: 15.5px; }
.tl-item .tl-date { color: var(--ink-3); font-size: 12.5px; }
.tl-item .tl-sum { color: var(--ink-2); font-size: 13.5px; margin-top: 6px; }
.tl-item .note-tags { margin-top: 8px; }

/* 版本对比 */
.cmp-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; margin-bottom: 16px; }
.cmp-row select { padding: 9px 12px; border-radius: 9px; border: 1px solid var(--line); background: var(--bg-soft); color: var(--ink); font-family: inherit; cursor: pointer; }
.cmp-row .vs { font-weight: 800; color: var(--brand); }
.cmp-stats { display: flex; gap: 12px; margin-bottom: 14px; }
.cmp-stat { flex: 1; border-radius: 10px; padding: 12px 16px; font-size: 13px; }
.cmp-stat.add { background: #e6f7f0; color: #157a54; }
.cmp-stat.del { background: #fdeeea; color: #c25438; }
[data-theme="dark"] .cmp-stat.add { background: rgba(31,169,113,.14); }
[data-theme="dark"] .cmp-stat.del { background: rgba(194,84,56,.14); }
.cmp-list { display: flex; flex-direction: column; gap: 7px; font-size: 13px; color: var(--ink-2); }
.cmp-empty { color: var(--ink-3); font-size: 13px; text-align: center; padding: 16px 0; }

/* ============ 服务页 ============ */
.svc-list { display: grid; gap: 16px; }
.svc-item {
  display: grid; grid-template-columns: 74px 1fr auto; gap: 20px; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; transition: .2s;
}
.svc-item:hover { transform: translateX(6px); border-color: color-mix(in srgb, var(--brand) 40%, var(--line)); }
.svc-item .ico { width: 74px; height: 74px; border-radius: 16px; overflow: hidden; background: var(--bg-soft); }
.svc-item .ico img { width: 100%; height: 100%; object-fit: cover; }
.svc-item h3 { font-size: 16px; }
.svc-item h3 a:hover { color: var(--brand); }
.svc-item p { color: var(--ink-2); font-size: 13.5px; margin-top: 6px; }
.svc-item .go { color: var(--brand); font-size: 13.5px; white-space: nowrap; }

/* ============ 下载中心 ============ */
.dl-group { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; margin-bottom: 20px; }
.dl-group h3 { display: flex; align-items: center; gap: 10px; font-size: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.dl-group .ver-line { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 13.5px; }
.dl-group .ver-line:last-child { border-bottom: none; }
.dl-group .v { color: var(--brand); font-weight: 700; min-width: 64px; }
.dl-group .d { color: var(--ink-3); font-size: 12.5px; min-width: 86px; }
.dl-group .f { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); padding: 4px 12px; border: 1px solid var(--line); border-radius: 8px; margin: 3px 6px 3px 0; transition: .18s; }
.dl-group .f:hover { color: var(--brand); border-color: var(--brand); }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-grid .card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 32px; }
.c-line { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed var(--line); align-items: flex-start; }
.c-line:last-child { border-bottom: none; }
.c-line .ico { width: 42px; height: 42px; flex-shrink: 0; border-radius: 11px; display: grid; place-items: center; background: color-mix(in srgb, var(--brand) 10%, transparent); color: var(--brand); font-size: 17px; }
.c-line b { display: block; font-size: 13px; color: var(--ink-3); font-weight: 500; }
.c-line span { color: var(--ink); font-size: 15px; }
.map-tip { margin-top: 16px; color: var(--ink-3); font-size: 12.5px; background: var(--bg-soft); border-radius: 9px; padding: 10px 14px; }

/* ============ 联系表单 ============ */
.field { display: block; margin-bottom: 14px; }
.field > span { display: block; color: var(--ink-2); font-size: 13px; margin-bottom: 6px; }
.field input[type=text], .field textarea {
  width: 100%; padding: 10px 13px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14px; color: var(--ink); background: var(--bg-soft); outline: none;
  transition: border-color .15s, box-shadow .15s; font-family: inherit;
}
.field input:focus, .field textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(254,90,14,.12); background: var(--card); }
.field textarea { resize: vertical; }

/* ============ 新闻卡片 ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .25s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-cover { aspect-ratio: 16/9; background: var(--bg-soft); display: grid; place-items: center; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-cover img { transform: scale(1.05); }
.news-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.news-date { color: var(--ink-3); font-size: 12.5px; margin-bottom: 8px; }
.news-body h3 { font-size: 15.5px; line-height: 1.5; }
.news-body p { color: var(--ink-2); font-size: 13px; margin-top: 8px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { color: var(--brand); font-size: 13px; margin-top: 12px; }
@media (max-width: 900px) { .news-grid { grid-template-columns: 1fr; } }

/* ============ 页脚 ============ */
.footer { background: var(--purple-deep); color: #a7a5c7; margin-top: 60px; }
.footer .wrap { padding: 52px 0 0; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer a { display: block; padding: 5px 0; font-size: 13.5px; color: #a7a5c7; transition: .15s; }
.footer a:hover { color: var(--brand-2); transform: translateX(3px); }
.footer .desc { font-size: 13px; line-height: 1.8; }
.footer .cop { margin-top: 40px; border-top: 1px solid rgba(255,255,255,.09); padding: 16px 0; text-align: center; font-size: 12.5px; color: #77749c; }
.footer .cop a { display: inline; color: #9a97c0; }

/* 404 */
.nf { text-align: center; padding: 110px 0; }
.nf b { font-size: 72px; color: var(--brand); display: block; }
.nf p { color: var(--ink-2); margin: 12px 0 26px; }

/* ============ 滚动渐入 ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 1020px) {
  .grid-products { grid-template-columns: repeat(2, 1fr); }
  .grid-areas { grid-template-columns: repeat(3, 1fr); }
  .pd-cols { grid-template-columns: 1fr; }
  .pd-head { grid-template-columns: 1fr; }
  .pd-head .cover { min-height: 240px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .hero-inner { grid-template-columns: 1fr; padding: 60px 0 64px; }
  .hero-visual { display: none; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .stats-band .cell:nth-child(3) { border-left: none; }
  .grid-products, .grid-areas { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--card); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 10px 16px 16px; gap: 2px;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .cmp-row { grid-template-columns: 1fr; }
  .cmp-row .vs { text-align: center; }
  .svc-item { grid-template-columns: 1fr; }
  .footer .wrap { grid-template-columns: 1fr; }
}