/* ============================================================
   自托管思源宋体（Noto Serif SC）：原 Google Fonts 外链在国内
   服务器不可达，改为本地 woff2，观感与以前一致、可被 Nginx 长缓存。
   仅含简体中文子集；西文/数字回退 Georgia（见 --font-serif）。
   ============================================================ */
@font-face {
  font-family: "Noto Serif SC";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/noto-serif-sc-400.woff2") format("woff2");
}
@font-face {
  font-family: "Noto Serif SC";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/noto-serif-sc-700.woff2") format("woff2");
}

/* ============================================================
   沃易住 WOYIZHU — 晨光湖蓝 · 宜居人文风
   Design system: light lake-blue primary, warm coral accent,
   ivory-warm neutrals, serif display + system sans body.
   ============================================================ */

:root {
  /* --- Primary: 琉璃正蓝（高饱和零灰调，鲜亮通透）--- */
  --blue-50:  #EDF5FF;
  --blue-100: #D6E8FF;
  --blue-200: #ADD2FF;
  --blue-300: #7AB5FF;
  --blue-400: #4696FF;
  --blue-500: #1677FF;   /* brand */
  --blue-600: #0E5FD8;   /* text-safe on light */
  --blue-700: #0B49A8;

  /* --- Accent: 暖珊瑚（幸福感）--- */
  --coral-100: #FDEDE6;
  --coral-300: #F8BFA8;
  --coral-500: #EE8A64;
  --coral-600: #DE6F46;

  /* --- Neutrals: 带蓝调的暖灰 --- */
  --ink:       #24384A;   /* headings */
  --ink-soft:  #3D5468;   /* body strong */
  --muted:     #64798C;   /* secondary text */
  --faint:     #93A6B7;

  /* --- Surfaces --- */
  --bg:        #F8FBFF;   /* page */
  --bg-blue:   #E9F3FF;   /* alt band: clear sky */
  --bg-warm:   #FBF6EF;   /* alt band: warm cream */
  --card:      #FFFFFF;
  --border:    #E0EBFA;
  --border-strong: #C6DCF6;

  /* shadows: blue-tinted, soft */
  --shadow-sm: 0 1px 2px rgba(30,105,190,.06), 0 2px 8px rgba(30,105,190,.06);
  --shadow-md: 0 2px 6px rgba(30,105,190,.06), 0 10px 28px rgba(30,105,190,.10);
  --shadow-lg: 0 4px 10px rgba(30,105,190,.07), 0 22px 48px rgba(30,105,190,.13);

  --radius: 22px;
  --radius-sm: 12px;

  /* 思源宋体已自托管（见文件顶部 @font-face，/fonts/noto-serif-sc-*.woff2），
     首位 Noto Serif SC 即本地加载；后续为未命中时的系统衬线兜底 → Georgia 西文 */
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink-soft);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
a.card-link { color: inherit; text-decoration: none; display: block; }
a.card-link:hover .glass { border-color: var(--blue-300); }

/* ---------- focus ---------- */
:focus-visible {
  outline: 2.5px solid var(--blue-400);
  outline-offset: 3px;
  border-radius: 4px;
}
button:focus-visible, .btn:focus-visible, a:focus-visible {
  border-radius: 6px;
}

/* ---------- skip nav ---------- */
.skip-link {
  position: absolute; top: -100px; left: 16px;
  background: var(--blue-500); color: #fff; padding: 12px 20px;
  border-radius: 8px; font-weight: 700; z-index: 200;
  transition: top .2s;
}
.skip-link:focus { top: 8px; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 999px;
  background: var(--blue-500);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .02em;
  border: none;
  box-shadow: 0 6px 18px rgba(22,119,255,.28);
  transition: transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s, background .25s;
}
.btn:hover { background: var(--blue-600); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(22,119,255,.34); }
.btn.ghost {
  background: #fff;
  color: var(--blue-600);
  border: 1.5px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.btn.ghost:hover { border-color: var(--blue-300); background: var(--blue-50); }

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,252,254,.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header .container { display: flex; align-items: center; justify-content: flex-start; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 20px; color: var(--ink); font-family: var(--font-serif); }
.logo .mark {
  width: 52px; height: 52px; border-radius: 16px;
  background: linear-gradient(135deg, var(--blue-400), var(--blue-600));
  color: #fff; display: grid; place-items: center;
  font-size: 25px; font-weight: 800; font-family: var(--font-sans);
  box-shadow: 0 4px 12px rgba(22,119,255,.3);
}
.logo .en { color: var(--faint); font-weight: 500; font-size: 13px; font-family: var(--font-sans); letter-spacing: .08em; }
.logo .logo-img { height: 52px; width: auto; border-radius: 12px; }
.logo .logo-img + span { display: none; }
.nav { display: flex; gap: 30px; margin-left: 52px; }
.nav a { font-size: 15px; color: var(--ink-soft); font-weight: 500; position: relative; padding: 4px 0; }
.nav a::after {
  content: ''; position: absolute; left: 0; bottom: -2px; width: 100%; height: 3px;
  border-radius: 2px; background: var(--coral-500);
  transform: scaleX(0); transform-origin: left; transition: transform .3s cubic-bezier(.22,1,.36,1);
}
.nav a:hover { color: var(--blue-600); }
.nav a:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.header-actions .btn { padding: 10px 24px; font-size: 14px; }
.lang-toggle { display: flex; border: 1.5px solid var(--border-strong); border-radius: 999px; overflow: hidden; background: #fff; }
.lang-toggle button {
  border: none; background: transparent; padding: 7px 14px; font-size: 13px;
  color: var(--muted); font-weight: 600; transition: all .2s;
}
.lang-toggle button.active { background: var(--blue-500); color: #fff; }
.menu-btn { display: none; border: none; background: none; font-size: 24px; color: var(--ink); }

/* ---------- hero (轮播) ---------- */
.hero { position: relative; overflow: hidden; }
.hero-track { position: relative; height: 640px; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity .9s ease, visibility .9s;
  display: flex; align-items: center;
}
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background-size: cover; background-position: center; }
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(0,0,0,0.28);
}
.hero-bg:not([style*="background-image"])::after {
  background:
    radial-gradient(560px 380px at 82% 22%, rgba(238,138,100,.14), transparent 65%),
    radial-gradient(700px 520px at 12% 85%, rgba(22,119,255,.12), transparent 65%);
}
.hero-content { position: relative; z-index: 2; max-width: 920px; margin-left: 0; margin-right: auto; padding-left: 200px; }
.hero-bg[style*="background-image"] ~ .hero-content h1,
.hero-bg[style*="url"] ~ .hero-content h1 { color: #fff; text-shadow: 0 2px 12px rgba(0,0,0,0.3); }
.hero-bg[style*="background-image"] ~ .hero-content p,
.hero-bg[style*="url"] ~ .hero-content p { color: rgba(255,255,255,0.88); }
.hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.28;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .01em;
  margin-bottom: 22px;
  white-space: nowrap;
}
.hero-content p {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--muted);
  max-width: 56ch;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--border); background: #fff; color: var(--blue-600);
  font-size: 22px; line-height: 1; box-shadow: var(--shadow-md);
  transition: all .25s;
}
.hero-arrow:hover { background: var(--blue-500); color: #fff; border-color: var(--blue-500); }
.hero-arrow.prev { left: 26px; }
.hero-arrow.next { right: 26px; }
.hero-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 4px; }
.hero-dots button {
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: transparent; position: relative; display: grid; place-items: center;
}
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--border); background: #fff; color: var(--blue-600);
  font-size: 22px; line-height: 1; box-shadow: var(--shadow-md);
  transition: all .25s;
}
.hero-arrow:hover { background: var(--blue-500); color: #fff; border-color: var(--blue-500); }
.hero-arrow.prev { left: 26px; }
.hero-arrow.next { right: 26px; }
.hero-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 4px; }
.hero-dots button {
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: transparent; position: relative;
  display: grid; place-items: center;
}
.hero-dots button::after {
  content: ''; width: 26px; height: 5px; border-radius: 3px;
  background: rgba(43,124,179,.22); transition: all .3s;
}
.hero-dots button.active::after { background: var(--coral-500); width: 40px; }

/* ---------- sections ---------- */
.section { padding: 96px 0; }
/* 交替底色：晨空蓝 / 暖米白，营造节奏与温度 */
.section:nth-of-type(odd) { background: var(--bg); }
.section:nth-of-type(even) { background: var(--bg-blue); }
/* warm override for ecosystem / CTA */
[data-type="partners"].section,
[data-type="cta"].section { background: var(--bg-warm); }

.section-head { text-align: center; margin-bottom: 56px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .22em; font-weight: 700;
  color: var(--coral-600);
  background: var(--coral-100);
  padding: 6px 18px; border-radius: 999px;
  margin-bottom: 18px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.2vw, 38px);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.35;
}
.section-sub { color: var(--muted); font-size: 16.5px; max-width: 62ch; margin: 14px auto 0; }

/* ---------- card base（原 glass 类，现为暖白卡片）---------- */
.glass {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .35s cubic-bezier(.22,1,.36,1), box-shadow .35s, border-color .35s;
}
.glass:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--blue-200); }

.grid { display: grid; gap: 26px; }

/* ---------- stats ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat { padding: 38px 24px; text-align: center; position: relative; overflow: hidden; }
.stat::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 46px; height: 4px; border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--blue-400), var(--coral-500));
}
.stat .num {
  font-family: var(--font-serif);
  font-size: 44px; font-weight: 800; color: var(--blue-600);
  line-height: 1.15; margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.stat .lab { color: var(--muted); font-size: 14.5px; }

/* ---------- products ---------- */
.products-grid { grid-template-columns: repeat(3, 1fr); }
.product {
  position: relative; aspect-ratio: 1 / 1; overflow: hidden;
  border-radius: 16px; background: var(--bg-blue);
}
.product .thumb {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: linear-gradient(150deg, var(--blue-50), var(--blue-100) 70%, var(--coral-100));
}
.product .thumb .ico { font-size: 56px; filter: saturate(.9); }
.product .thumb img { width: 100%; height: 100%; object-fit: cover; }
/* hover 时浮现：类别 + 名称 + 简介 */
.product .overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px 22px;
  background: linear-gradient(to top, rgba(10,22,40,.88) 0%, rgba(10,22,40,.55) 45%, rgba(10,22,40,0) 78%);
  opacity: 0; transition: opacity .28s ease;
}
.product:hover .overlay,
.card-link:hover .product .overlay { opacity: 1; }
.product .overlay .tag {
  display: inline-block; width: fit-content;
  font-size: 11.5px; font-weight: 700; letter-spacing: .06em;
  color: #fff; background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.28);
  padding: 3px 11px; border-radius: 999px; margin-bottom: 12px;
}
.product .overlay h3 {
  font-family: var(--font-serif); font-size: 20px; color: #fff;
  margin-bottom: 8px; font-weight: 700;
}
.product .overlay p { font-size: 13.5px; color: rgba(255,255,255,.82); margin: 0; line-height: 1.55; }

/* 核心产品分类筛选条 */
.prod-cats {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  margin: 0 0 44px;
}
.pc-chip {
  border: 1px solid var(--blue-100); background: #fff; color: var(--ink-soft);
  padding: 8px 18px; border-radius: 999px; font-size: 14px;
  cursor: pointer; transition: all .2s ease; font-family: inherit; line-height: 1.4;
}
.pc-chip:hover { border-color: var(--blue-300); color: var(--blue-500); }
.pc-chip.active { background: var(--blue-500); border-color: var(--blue-500); color: #fff; }
.prod-empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 44px 0; font-size: 15px; }

/* ---------- solutions ---------- */
.solutions-grid { grid-template-columns: repeat(2, 1fr); }
.solution { padding: 34px 32px; display: flex; gap: 22px; align-items: flex-start; }
.solution .idx {
  font-family: var(--font-serif); font-style: italic;
  font-size: 40px; font-weight: 800; line-height: 1;
  color: var(--blue-200);
  min-width: 58px;
  transition: color .3s;
}
.solution:hover .idx { color: var(--coral-500); }
.solution h3 { font-family: var(--font-serif); font-size: 19px; color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.solution p { font-size: 14.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

/* ---------- cases carousel ---------- */
.case-carousel {
  overflow: hidden; width: 100%; padding: 12px 0 40px;
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}
.case-track {
  display: flex; gap: 24px; will-change: transform;
  padding: 0 calc((100vw - 1200px) / 2 + 28px);
  max-width: 100vw;
}
.case-card {
  flex-shrink: 0; width: 360px; border-radius: 18px; overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-thumb {
  width: 100%; height: 200px; overflow: hidden;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
}
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.case-card:hover .case-thumb img { transform: scale(1.04); }
.case-thumb.empty {
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 32px; font-weight: 800;
  color: var(--blue-300);
}
.case-body { padding: 22px 24px 26px; }
.case-header { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.case-avatar {
  width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px;
  overflow: hidden; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  font-family: var(--font-serif); font-size: 20px; font-weight: 800; color: #fff;
}
.case-avatar img { width: 100%; height: 100%; object-fit: cover; }
.case-header h3 { font-family: var(--font-serif); font-size: 17px; color: var(--ink); font-weight: 700; margin: 0; }
.case-result { font-size: 14px; color: var(--ink-soft); line-height: 1.7; margin: 0; }
.case-carousel .card-link { color: inherit; text-decoration: none; flex-shrink: 0; }
.case-carousel .card-link .case-card { width: 360px; }

/* ---------- partners ---------- */
.partners-wall { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.partner {
  padding: 15px 30px; border-radius: 999px;
  border: 1px solid var(--border); background: #fff;
  color: var(--ink-soft); font-weight: 600; font-size: 15px;
  box-shadow: var(--shadow-sm);
  transition: all .3s cubic-bezier(.22,1,.36,1);
}
.partner:hover { transform: translateY(-4px); border-color: var(--blue-300); color: var(--blue-600); box-shadow: var(--shadow-md); }

/* ---------- cta band ---------- */
.cta-band {
  background:
    radial-gradient(500px 300px at 85% 0%, rgba(238,138,100,.14), transparent 60%),
    linear-gradient(140deg, #fff, var(--blue-50));
  border: 1px solid var(--blue-100);
}
.cta-band .section-sub { margin-bottom: 30px; }

/* ---------- features ---------- */
.features-grid { grid-template-columns: repeat(3, 1fr); }
.feature { padding: 32px 28px; }
.feature .ficon {
  width: 54px; height: 54px; border-radius: 16px;
  display: grid; place-items: center; font-size: 26px;
  background: var(--blue-50); border: 1px solid var(--blue-100);
  margin-bottom: 18px;
}
.feature h3 { font-family: var(--font-serif); font-size: 18px; color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.feature p { font-size: 14.5px; color: var(--muted); }

/* ---------- contact ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 46px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 6px; padding-top: 8px; }
.contact-info .item {
  display: flex; flex-direction: column; gap: 4px;
  padding: 20px 24px; border-radius: var(--radius-sm);
  transition: background .25s;
}
.contact-info .item:hover { background: var(--blue-50); }
.contact-info .k { font-size: 12.5px; letter-spacing: .14em; color: var(--faint); font-weight: 700; }
.contact-info .v { font-size: 17px; color: var(--ink); font-weight: 600; }
.form { padding: 38px 36px; }
.form label { display: block; font-size: 13.5px; font-weight: 700; color: var(--ink-soft); margin: 18px 0 8px; }
.form label:first-child { margin-top: 0; }
.form input, .form textarea {
  width: 100%; padding: 13px 16px;
  border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 15px; color: var(--ink);
  background: var(--bg);
  transition: border-color .25s, box-shadow .25s;
}
.form input::placeholder, .form textarea::placeholder { color: var(--faint); }
.form input:focus, .form textarea:focus {
  outline: none; border-color: var(--blue-400);
  box-shadow: 0 0 0 4px rgba(22,119,255,.14);
  background: #fff;
}
.form textarea { min-height: 110px; resize: vertical; }
.form .btn { width: 100%; margin-top: 26px; }
.form .hint { display: none; margin-top: 16px; text-align: center; color: #2E9E6B; font-weight: 600; font-size: 14.5px; }

/* ---------- footer ---------- */
.footer { background: var(--ink); padding: 40px 0 32px; position: relative; z-index: 30; }
.footer .container { display: flex; flex-direction: column; gap: 22px; }
.footer-cols { display: flex; gap: 34px; flex-wrap: wrap; }
.footer-col { position: relative; }
.fc-title { color: #EAF2F9; font-size: 15px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 5px; padding: 4px 0; }
.fc-title:hover { color: #fff; }
.fc-caret { font-size: 11px; opacity: .7; transition: transform .2s; }
.footer-col:hover .fc-caret { transform: rotate(180deg); }
.fc-sub {
  position: absolute; bottom: 100%; left: 0; min-width: 210px;
  background: #fff; border-radius: 12px; box-shadow: 0 14px 40px rgba(0,0,0,.28);
  padding: 8px; margin: 0 0 12px 0; list-style: none;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}
.fc-sub::before { content: ''; position: absolute; top: 100%; left: 0; right: 0; height: 12px; }
.fc-sub::after { content: ''; position: absolute; top: 100%; left: 28px; border: 7px solid transparent; border-top-color: #fff; }
.footer-col:hover .fc-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.fc-sub li { list-style: none; }
.fc-sub a {
  display: block; padding: 9px 12px; border-radius: 8px;
  color: var(--ink-soft); font-size: 14px; text-decoration: none;
  transition: background .15s, color .15s; white-space: nowrap;
}
.fc-sub a:hover { background: var(--bg-blue); color: var(--blue-600); }
.footer .copy { color: #7E93A6; font-size: 13px; }

/* ---------- detail pages ---------- */
.detail-hero { position: relative; overflow: hidden; min-height: 340px; display: flex; align-items: center; }
.detail-hero-bg { position: absolute; inset: 0; z-index: 0; background-size: cover; background-position: center; }
.detail-hero-bg[style*="background-image"]::after { content:''; position:absolute; inset:0; background:rgba(0,0,0,0.35); }
.detail-hero-content { position: relative; z-index: 2; max-width: 920px; margin-left: 0; margin-right: auto; padding: 80px 28px 60px 200px; }
.detail-hero-content h1 {
  font-family: var(--font-serif); font-size: clamp(28px,4vw,44px);
  color: var(--ink); line-height: 1.25; margin-bottom: 14px;
}
.detail-hero-bg[style*="background-image"] ~ .detail-hero-content h1 { color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.detail-hero-bg[style*="background-image"] ~ .detail-hero-content .detail-tagline { color: rgba(255,255,255,0.88); }
.detail-tagline { font-size: 17px; color: var(--muted); max-width: 56ch; }
.back-link { display: inline-block; color: var(--blue-600); font-weight: 600; font-size: 14px; margin-bottom: 18px; cursor: pointer; }
.detail-hero-bg[style*="background-image"] ~ .detail-hero-content .back-link { color: rgba(255,255,255,0.85); }

/* ---------- solution detail pages (demo-aligned) ---------- */
.sol-page {
  --sol-accent: #1677FF;
  --sol-bg: #EDF5FF; --sol-bg2: #D6E8FF; --sol-soft: #F6FAFF;
}
.sol-page.tpl-a {
  --sol-accent: #2E6BFF;
  --sol-bg: #EDF5FF; --sol-bg2: #D6E8FF; --sol-soft: #F6FAFF;
}
.sol-page.tpl-b {
  --sol-accent: #5B4DFF;
  --sol-bg: #F3F1FF; --sol-bg2: #E6E1FF; --sol-soft: #FAF9FF;
}
.sol-page.tpl-c {
  --sol-accent: #E5673D;
  --sol-bg: #FFF2ED; --sol-bg2: #FFE0D4; --sol-soft: #FFF9F7;
}

.sol-hero { position: relative; overflow: hidden; min-height: 520px; display: flex; align-items: center; background: var(--sol-bg); }
.sol-hero-bg { position: absolute; inset: 0; z-index: 0; background-size: cover; background-position: center; }
.sol-hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, var(--sol-bg) 0%, rgba(255,255,255,0.55) 55%, transparent 100%); }
.sol-hero-content { position: relative; z-index: 2; width: 100%; max-width: 1180px; margin: 0 auto; padding: 90px 28px 70px 200px; }
.sol-hero-content .back-link { display: inline-block; color: var(--sol-accent); font-weight: 600; font-size: 14px; margin-bottom: 22px; }
.sol-hero-eyebrow { display: inline-block; font-size: 13px; font-weight: 600; color: var(--sol-accent); letter-spacing: .06em; padding: 7px 14px; border: 1px solid rgba(0,0,0,0.08); border-radius: 999px; background: rgba(255,255,255,0.75); backdrop-filter: blur(4px); margin-bottom: 20px; }
.sol-hero-content h1 { font-family: var(--font-serif); font-size: clamp(34px, 5vw, 56px); font-weight: 700; color: var(--ink); line-height: 1.18; margin: 0 0 18px; max-width: 16ch; }
.sol-hero-subtitle { font-size: 17px; color: var(--muted); line-height: 1.7; max-width: 56ch; margin-bottom: 30px; }
.sol-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.sol-hero-actions .btn { background: var(--sol-accent); border-color: var(--sol-accent); color: #fff; }
.sol-hero-actions .btn.ghost { background: #fff; color: var(--sol-accent); border-color: rgba(0,0,0,0.08); }
.sol-hero-actions .btn:hover { opacity: .92; transform: translateY(-2px); }

.sol-section { padding: 70px 0; }
.sol-section .sol-eyebrow { text-align: center; font-size: 12px; font-weight: 700; color: var(--sol-accent); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 12px; }
.sol-section .sol-h2 { font-family: var(--font-serif); font-size: clamp(28px, 3.4vw, 40px); font-weight: 700; color: var(--ink); text-align: center; margin: 0 0 12px; }
.sol-section .sol-subtitle { text-align: center; font-size: 15px; color: var(--muted); line-height: 1.7; max-width: 60ch; margin: 0 auto 40px; }

/* pain */
.sol-pain { background: var(--sol-soft); }
.tpl-c .sol-pain { background: #fff; }
.sol-pain-cap { font-size: 15px; color: var(--muted); text-align: center; margin: -18px auto 22px; max-width: 60ch; }
.sol-pain-list { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.sol-pain-chip { background: #fff; border: 1px solid #E2E9F3; color: var(--ink); font-size: 14px; padding: 10px 18px; border-radius: 999px; }
.tpl-c .sol-pain-chip { border-color: var(--sol-bg2); background: var(--sol-soft); }
.sol-pain-cards .sol-pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sol-pain-card { background: #fff; border: 1px solid #EAEEF5; border-radius: 14px; padding: 28px 24px; }
.sol-pain-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--sol-soft); color: var(--sol-accent); font-size: 22px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.sol-pain-card h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 0 0 8px; }
.sol-pain-card p { font-size: 14px; color: var(--muted); line-height: 1.65; margin: 0; }

/* journey */
.sol-journey-track { position: relative; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px; }
.sol-journey-track::before { content: ''; position: absolute; top: 20px; left: 10%; right: 10%; height: 2px; background: var(--sol-bg2); z-index: 0; }
.sol-journey-node { position: relative; z-index: 1; border: 1px solid #EAEEF5; border-radius: 14px; padding: 22px 18px; background: #fff; }
.sol-journey-dot { width: 40px; height: 40px; border-radius: 50%; background: var(--sol-accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 14px; box-shadow: 0 0 0 6px var(--sol-soft); }
.sol-journey-phase { font-size: 12px; color: var(--sol-accent); letter-spacing: .08em; font-weight: 600; }
.sol-journey-title { font-size: 17px; font-weight: 600; margin: 6px 0 8px; color: var(--ink); }
.sol-journey-desc { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* capability */
.sol-cap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.sol-cap-card { border: 1px solid #EAEEF5; border-radius: 14px; padding: 26px 22px; background: #fff; transition: transform .2s, box-shadow .2s; }
.sol-cap-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.06); }
.sol-cap-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--sol-soft); color: var(--sol-accent); font-size: 22px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.sol-cap-card h3 { font-size: 17px; margin: 0 0 8px; color: var(--ink); }
.sol-cap-card p { font-size: 14px; color: var(--muted); line-height: 1.65; margin: 0; }

/* capMap */
.sol-capmap-inner { display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: start; }
.sol-capmap-center { background: var(--sol-accent); color: #fff; border-radius: 50%; width: 240px; height: 240px; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 22px; font-weight: 700; font-family: var(--font-serif); position: sticky; top: 100px; margin: 0 auto; box-shadow: 0 16px 40px rgba(91,77,255,0.18); }
.sol-capmap-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.sol-capmap-tab { border: 1px solid #DCE3EE; background: #fff; color: var(--ink); border-radius: 999px; padding: 8px 18px; font-size: 14px; cursor: pointer; transition: all .15s; }
.sol-capmap-tab.active { background: var(--sol-accent); color: #fff; border-color: var(--sol-accent); }
.sol-capmap-tab:hover:not(.active) { border-color: var(--sol-accent); color: var(--sol-accent); }
.sol-capmap-panel { border: 1px solid #EAEEF5; border-radius: 14px; padding: 26px; background: #fff; }
.sol-capmap-panel[hidden] { display: none; }
.sol-capmap-panel h3 { margin: 0 0 10px; font-size: 19px; color: var(--ink); }
.sol-capmap-panel p { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 0 0 14px; }
.sol-capmap-points { margin: 0; padding-left: 20px; color: var(--ink); font-size: 14px; }
.sol-capmap-points li { margin: 6px 0; }

/* kpi */
.sol-kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.sol-kpi-card { background: #fff; border: 1px solid #EAEEF5; border-radius: 14px; padding: 28px 22px; box-shadow: 0 4px 18px rgba(0,0,0,0.03); }
.sol-kpi-val { font-size: 42px; font-weight: 700; font-family: var(--font-serif); color: var(--sol-accent); line-height: 1.1; }
.sol-kpi-suf { font-size: 22px; margin-left: 2px; }
.sol-kpi-lab { font-size: 15px; color: var(--ink); margin-top: 10px; font-weight: 500; }
.sol-kpi-sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.sol-kpi-bar { height: 4px; background: #EDF0F5; border-radius: 2px; margin-top: 14px; overflow: hidden; }
.sol-kpi-bar span { display: block; height: 100%; background: var(--sol-accent); border-radius: 2px; }

/* before/after */
.sol-ba-row { display: flex; align-items: center; gap: 16px; background: #fff; border: 1px solid #EAEEF5; border-radius: 12px; padding: 18px 22px; margin-bottom: 14px; }
.sol-ba-side { flex: 1; display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--ink); }
.sol-ba-tag { font-size: 12px; padding: 4px 12px; border-radius: 6px; font-weight: 600; }
.sol-ba-before .sol-ba-tag { background: #FCEBEB; color: #A32D2D; }
.sol-ba-after .sol-ba-tag { background: #EAF3DE; color: #3B6D11; }
.sol-ba-arrow { color: var(--sol-accent); font-size: 20px; }

/* pathway */
.sol-path-track { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.sol-path-track::before { content: ''; position: absolute; top: 20px; left: 12%; right: 12%; height: 2px; background: var(--sol-bg2); z-index: 0; }
.sol-path-node { position: relative; z-index: 1; display: flex; gap: 14px; align-items: flex-start; border: 1px solid #EAEEF5; border-radius: 14px; padding: 22px; background: #fff; }
.sol-path-num { width: 40px; height: 40px; flex: 0 0 40px; border-radius: 50%; background: var(--sol-accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; box-shadow: 0 0 0 6px var(--sol-soft); }
.sol-path-title { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.sol-path-desc { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 0; }

/* case */
.sol-case { background: var(--sol-soft); }
.sol-case-inner { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; border: 1px solid #EAEEF5; border-radius: 16px; padding: 36px; background: #fff; }
.sol-case-client { font-size: 14px; font-weight: 700; color: var(--sol-accent); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 10px; }
.sol-case-summary { font-size: 16px; color: var(--ink); line-height: 1.7; margin: 0; max-width: 60ch; }
.sol-case-metrics { display: flex; gap: 32px; flex-wrap: wrap; }
.sol-case-val { font-size: 38px; font-weight: 700; color: var(--sol-accent); font-family: var(--font-serif); line-height: 1.1; }
.sol-case-lab { font-size: 13px; color: var(--muted); }

@media (max-width: 1024px) {
  .sol-kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-path-track { grid-template-columns: repeat(2, 1fr); }
  .sol-pain-cards .sol-pain-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-capmap-inner { grid-template-columns: 1fr; }
  .sol-capmap-center { position: static; width: 200px; height: 200px; margin-bottom: 24px; }
}
@media (max-width: 900px) {
  .sol-case-inner { grid-template-columns: 1fr; }
  .sol-capmap-inner { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sol-hero-content { padding: 70px 28px 50px !important; }
  .sol-hero-content h1 { max-width: 100%; }
  .sol-kpi-grid { grid-template-columns: 1fr; }
  .sol-path-track { grid-template-columns: 1fr; }
  .sol-pain-cards .sol-pain-grid { grid-template-columns: 1fr; }
  .sol-ba-row { flex-direction: column; align-items: stretch; }
  .sol-ba-arrow { transform: rotate(90deg); align-self: center; }
  .detail-hero-content { padding: 64px 28px 44px !important; max-width: 100%; }
}

.detail-section { padding: 64px 0; }
.detail-section h2 { font-family: var(--font-serif); font-size: 26px; color: var(--ink); margin-bottom: 18px; }
.detail-section p { font-size: 16px; color: var(--ink-soft); max-width: 72ch; line-height: 1.8; }
.detail-img { margin: 32px 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.detail-img img { width: 100%; display: block; }

/* 产品详情页「产品概述」顶部产品图：约为容器三分之一，居中 */
.prod-overview-img {
  width: 33.33%;
  max-width: 420px;
  margin: 28px auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.prod-overview-img img { width: 100%; display: block; }
@media (max-width: 768px) {
  .prod-overview-img { width: 62%; }
}

.specs-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
.specs-table td { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.specs-table td:first-child { font-weight: 600; color: var(--ink); width: 160px; }
.specs-table td:last-child { color: var(--ink-soft); }

.case-client { font-family: var(--font-serif); font-size: 20px; color: var(--blue-600); font-weight: 700; margin-bottom: 16px; }
.case-summary { font-size: 16px; color: var(--ink-soft); max-width: 72ch; line-height: 1.8; margin-bottom: 28px; }
.case-metrics { display: flex; gap: 32px; flex-wrap: wrap; margin-top: 28px; }
.case-stat { padding: 20px 28px; background: var(--blue-50); border-radius: var(--radius-sm); min-width: 140px; }
.case-stat-val { font-family: var(--font-serif); font-size: 28px; font-weight: 800; color: var(--blue-600); }
.case-stat-lab { font-size: 13px; color: var(--muted); margin-top: 4px; }

.detail-footer { text-align: center; padding: 48px 28px 80px; }
.detail-404 { padding: 120px 24px; text-align: center; color: var(--muted); font-size: 18px; }

/* ---------- china heatmap ---------- */
.china-heatmap-section-wrapper { background: var(--bg-blue) !important; }
.china-heatmap-container { position: relative; overflow: hidden; }
.heatmap-wrap { display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start; }
.heatmap-svg-wrap { position: relative; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.heatmap-svg { display: block; width: 100%; height: auto; }

/* province hover */
.province { cursor: pointer; transition: fill-opacity .3s, stroke-width .3s; }
.province:hover { fill-opacity: 0.85 !important; stroke: #1677FF !important; stroke-width: 2 !important; }

/* scanning line */
.scan-line { animation: heatScan 3s ease-in-out infinite; }
@keyframes heatScan {
  0%   { transform: translateY(0); opacity: 0; }
  20%  { opacity: 0.6; }
  80%  { opacity: 0.6; }
  100% { transform: translateY(680px); opacity: 0; }
}

/* data dots pulse */
.data-dot { animation: dotPulse 2s ease-in-out infinite; }
@keyframes dotPulse {
  0%,100% { opacity: 0.4; r: 3; }
  50%     { opacity: 1; r: 5; }
}
.data-ring { animation: ringExpand 2s ease-in-out infinite; }
@keyframes ringExpand {
  0%   { r: 3; opacity: 0.7; }
  100% { r: 18; opacity: 0; }
}

/* tooltip */
.heat-tooltip {
  display: none; position: absolute; z-index: 20;
  background: rgba(11,73,168,0.94); color: #fff;
  padding: 8px 14px; border-radius: 10px;
  font-size: 13px; line-height: 1.5; pointer-events: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  white-space: nowrap;
}

/* side panel */
.heat-panel {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow-sm);
}
.heat-panel-title {
  font-family: var(--font-serif); font-size: 17px; font-weight: 700;
  color: var(--ink); margin-bottom: 16px;
}
.heat-row {
  display: grid; grid-template-columns: 22px 1fr auto; gap: 10px;
  align-items: center; padding: 8px 0; position: relative;
  animation: rowSlide .4s ease both;
}
@keyframes rowSlide { from { opacity:0; transform:translateX(10px); } to { opacity:1; transform:none; } }
.heat-rank {
  width: 22px; height: 22px; border-radius: 6px;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 800; color: #fff;
  background: var(--blue-500);
}
.heat-row:nth-child(3) .heat-rank { background: var(--blue-600) }
.heat-row:nth-child(4) .heat-rank { background: var(--blue-500) }
.heat-row:nth-child(5) .heat-rank { background: var(--blue-400) }
.heat-row:nth-child(6) .heat-rank { background: var(--blue-300) }
.heat-name { font-size: 14px; font-weight: 600; color: var(--ink); }
.heat-val { font-size: 14px; font-weight: 700; color: var(--blue-600); text-align: right; }
.heat-bar {
  position: absolute; left: 0; bottom: 0; height: 3px;
  background: var(--blue-100); border-radius: 0 3px 3px 0;
  transition: width .6s ease;
}
.heat-cycle-hint {
  margin-top: 16px; font-size: 12px; color: var(--faint);
  text-align: center; font-style: italic;
}

/* legend bar */
.heat-legend {
  display: flex; align-items: center; gap: 10px;
  margin-top: 18px; justify-content: center;
}
.legend-label { font-size: 12px; color: var(--muted); }
.legend-grad {
  width: 140px; height: 8px; border-radius: 4px;
  background: linear-gradient(90deg, var(--blue-100), var(--blue-500), var(--blue-700));
}

/* metric toggle buttons */
.heat-metrics-bar {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-top: 24px;
}
.heat-metric-btn {
  padding: 8px 20px; border-radius: 999px;
  border: 1.5px solid var(--border-strong);
  background: #fff; color: var(--muted);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all .25s;
}
.heat-metric-btn:hover { border-color: var(--blue-300); color: var(--blue-600); }
.heat-metric-btn.active {
  background: var(--blue-500); color: #fff; border-color: var(--blue-500);
  box-shadow: 0 4px 14px rgba(22,119,255,.28);
}

/* responsive */
@media (max-width: 900px) {
  .heatmap-wrap { grid-template-columns: 1fr; }
}

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid, .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav {
    position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0;
    padding: 12px 28px 20px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .3s ease, visibility .3s;
  }
  .nav.open { opacity: 1; visibility: visible; pointer-events: auto; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav a:last-child { border-bottom: none; }
  .menu-btn { display: block; }
  .header-actions .btn { display: none; }
  .hero-track { height: 560px; }
  .hero-arrow { display: none; }
  .hero-content { padding-left: 28px; }
  .hero-content h1 { white-space: normal; }
  .section { padding: 64px 0; }
  .products-grid, .features-grid { grid-template-columns: 1fr; }
  /* 补：此前 solutions-grid 漏了单列覆盖。两列时 1fr 的 min 取 auto(即 min-content)，
     会被卡片内容顶宽，导致整页横向溢出（实测 390px 视口下 document.scrollWidth=1126） */
  .solutions-grid { grid-template-columns: 1fr; }
  .solution { min-width: 0; }
  /* 兜底：html 默认 overflow-x:visible 会把热力图内部 600px SVG 的 scrollWidth
     算进 document，使 scrollWidth 虚高（实测 594）。body 已 hidden 锁死拖动，
     这里补 html hidden 让指标也干净，零副作用 */
  html { overflow-x: hidden; }
  .case-card { width: 300px; }
  .case-track { padding: 0 16px; }
  .case-thumb { height: 180px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 24px; }
  .stat .num { font-size: 36px; }
}

/* heatmap mobile */

/* ---------- 联系板块滚动弹窗（线索留资） ---------- */
.lead-popup {
  position: fixed; right: 24px; bottom: 24px; width: 320px; max-width: calc(100vw - 32px);
  background: #fff; border-radius: 16px; box-shadow: 0 18px 50px rgba(20,80,160,0.22);
  border: 1px solid rgba(22,119,255,0.12); overflow: hidden; z-index: 999;
  transform: translateY(20px); opacity: 0; transition: transform .35s ease, opacity .35s ease;
}
.lead-popup.hidden { display: none; }
.lead-popup.show { transform: translateY(0); opacity: 1; }
.lead-popup-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 6px; }
.lead-popup-title { font-size: 15px; font-weight: 700; color: var(--ink); }
.lead-popup-opts { display: flex; align-items: center; gap: 2px; }
.lead-popup-min, .lead-popup-close { border: none; background: transparent; color: var(--faint); cursor: pointer; line-height: 1; padding: 4px 7px; border-radius: 6px; font-size: 16px; }
.lead-popup-min { font-size: 18px; font-weight: 700; }
.lead-popup-min:hover, .lead-popup-close:hover { color: var(--ink); background: var(--blue-50); }
.lead-popup-body { padding: 0 16px 16px; display: flex; flex-direction: column; gap: 10px; }
.lead-popup-tip { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.5; }
.lead-popup-body input, .lead-popup-body textarea {
  width: 100%; box-sizing: border-box; border: 1.5px solid var(--border-strong); border-radius: 10px;
  padding: 10px 12px; font-size: 14px; font-family: inherit; color: var(--ink); background: #FBFDFF; resize: vertical;
}
.lead-popup-body input:focus, .lead-popup-body textarea:focus { outline: none; border-color: var(--blue-400); background: #fff; }
.lead-popup-body textarea { min-height: 56px; }
.lead-popup-submit { margin-top: 2px; }
.lead-popup-hint { font-size: 12.5px; min-height: 16px; }
.lead-popup-hint.ok { color: #18A058; }
.lead-popup-hint.err { color: #E54848; }
/* 最小化：隐藏卡片，仅保留右侧悬浮气泡（固定定位，滚动时跟随） */
.lead-popup-bubble {
  display: none; position: fixed; right: 18px; bottom: 26px; width: 54px; height: 54px;
  border-radius: 50%; border: none; cursor: pointer; font-size: 24px; line-height: 1;
  background: linear-gradient(160deg, #2F80FF, #1677FF); color: #fff;
  box-shadow: 0 12px 30px rgba(22,119,255,0.40); z-index: 999; align-items: center; justify-content: center;
  transition: transform .2s ease;
}
.lead-popup-bubble:hover { transform: scale(1.06); }
.lead-popup.min { width: auto; padding: 0; background: transparent; border: none; box-shadow: none; overflow: visible; transform: none; opacity: 1; }
.lead-popup.min .lead-popup-head, .lead-popup.min .lead-popup-body { display: none; }
.lead-popup.min .lead-popup-bubble { display: flex; }
@media (max-width: 560px) {
  .lead-popup { right: 12px; left: 12px; bottom: 12px; width: auto; }
}
@media (max-width: 900px) {
  .heatmap-wrap { grid-template-columns: 1fr !important; }
  .heatmap-svg { height: auto; }
  .heat-panel { order: 2; }
}
@media (max-width: 520px) {
  .heatmap-svg-wrap { overflow-x: auto; }
  .heatmap-svg { min-width: 600px; }
  .heat-metrics-bar { flex-wrap: wrap; }
  .heat-metric-btn { font-size: 12px; padding: 6px 14px; }
}

/* ====== support / knowledge base ====== */
.support-hero {
  position: relative; padding: 76px 0 40px;
  background: linear-gradient(160deg, #EDF5FF, #DCEBFF);
}
.support-hero h1 { font-family: var(--font-serif); font-size: clamp(30px, 4vw, 44px); color: var(--ink); font-weight: 700; margin-bottom: 12px; }
.support-sub { font-size: 16px; color: var(--ink-soft); max-width: 56ch; }
.support-body { padding: 0 0 80px; background: var(--bg); }
.support-layout { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; padding-top: 32px; }

/* —— sidebar：无外框、轻量、所有分类常驻展开 —— */
.support-sidebar {
  position: sticky; top: 20px;
  background: transparent; border: none; padding: 0; box-shadow: none;
}
.support-cat { margin-bottom: 22px; }
.support-cat-head {
  display: flex; align-items: center; gap: 8px;
  padding: 0 0 8px; border-bottom: 1px solid var(--border);
  font-size: 13px; font-weight: 600; color: var(--muted);
  letter-spacing: .04em;
}
.support-cat .cat-icon { font-size: 14px; }
.support-cat .cat-label { flex: 1; color: var(--ink); font-size: 14px; }
.support-cat .cat-count {
  font-size: 11px; color: var(--muted); font-weight: 600;
  background: var(--bg-blue); border-radius: 999px; padding: 1px 7px;
}
.support-cat-items { list-style: none; padding: 6px 0 0; margin: 0; }
.support-sub-item {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 6px 6px 4px; cursor: pointer;
  font-size: 13.5px; color: var(--ink-soft); line-height: 1.45;
  border-radius: 6px; transition: color .15s, background .15s;
}
.support-sub-item:hover { color: var(--blue-600); background: var(--bg-blue); }
.support-sub-item .ssi-icon { font-size: 12px; opacity: .55; flex-shrink: 0; }
.support-sub-item .ssi-label { flex: 1; }

/* —— 左侧选中态 —— */
.support-sub-item.active { color: var(--blue-700); background: var(--bg-blue); font-weight: 600; }
.support-sub-item.active .ssi-icon { opacity: 1; }

/* —— 右侧：单条内容详情 —— */
.support-empty { padding: 60px 24px; text-align: center; color: var(--muted); }
.support-detail-head { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.support-detail-head .sdh-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.support-detail-head .sdh-breadcrumb { font-size: 13px; color: var(--muted); font-weight: 600; }
.support-detail-head .sdh-type {
  font-size: 12px; font-weight: 700; color: var(--blue-600);
  background: var(--bg-blue); border-radius: 999px; padding: 3px 12px;
}
.support-detail-head h2 { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.35; }
.support-detail-head .sdh-summary { font-size: 15px; color: var(--ink-soft); line-height: 1.7; max-width: 70ch; }

/* —— 视频方格（四列） —— */
.support-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.vc-card { display: flex; flex-direction: column; }
.vc-card .vc-thumb {
  position: relative; width: 100%; aspect-ratio: 16 / 9; border: 0; padding: 0; cursor: pointer;
  border-radius: 12px; overflow: hidden; background: #0F1B2D;
  display: grid; place-items: center;
}
.vc-card .vc-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.vc-card .vc-thumb-empty {
  width: 100%; height: 100%; display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 32px; color: rgba(255,255,255,.35);
  background: linear-gradient(135deg, #1F3A6E, #0F1B2D);
}
.vc-card .vc-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 46px; height: 46px; border-radius: 50%;
  background: rgba(255,255,255,.92); color: var(--blue-700);
  display: grid; place-items: center; font-size: 18px; font-weight: 700;
  box-shadow: 0 6px 20px rgba(0,0,0,.25); transition: transform .2s, background .2s;
}
.vc-card .vc-thumb:hover .vc-play { transform: translate(-50%, -50%) scale(1.08); background: #fff; }
.vc-card .vc-body { padding: 12px 2px 2px; }
.vc-card .vc-body h3 { font-size: 14.5px; font-weight: 600; color: var(--ink); margin: 0; line-height: 1.4; }
.vc-card .vc-detail { margin-top: 12px; }
.vc-card .vc-detail video { width: 100%; border-radius: 10px; background: #000; max-height: 480px; }
.vc-card .vc-no-src { padding: 16px; text-align: center; color: var(--muted); background: var(--bg-blue); border-radius: 8px; font-size: 13px; }

/* —— 文章 / 文件：简洁列表 —— */
.support-list { display: flex; flex-direction: column; }
.lr-row { display: flex; align-items: center; gap: 16px; padding: 16px 4px; border-bottom: 1px solid var(--border); }
.lr-row:last-child { border-bottom: none; }
.lr-row .lr-main { flex: 1; background: transparent; border: none; padding: 0; text-align: left; cursor: pointer; display: flex; align-items: center; gap: 12px; min-width: 0; }
.lr-row .lr-main h3 { font-size: 15px; font-weight: 600; color: var(--ink); margin: 0; }
.lr-row .lr-arrow { font-size: 18px; color: var(--muted); transition: transform .2s, color .2s; }
.lr-row.open .lr-arrow { transform: rotate(90deg); color: var(--blue-600); }
.lr-row .lr-detail { flex-basis: 100%; margin-top: 12px; padding: 16px 20px; background: var(--bg); border-radius: 8px; }
.lr-row .article-body { font-size: 14.5px; color: var(--ink-soft); line-height: 1.8; }
.lr-row .lr-download {
  flex-shrink: 0; font-size: 13px; font-weight: 600; color: var(--blue-600);
  border: 1px solid var(--blue-300); padding: 7px 16px; border-radius: 999px;
  text-decoration: none; transition: background .15s;
}
.lr-row .lr-download:hover { background: var(--blue-50); }

@media (max-width: 1080px) {
  .support-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .support-layout { grid-template-columns: 1fr; gap: 28px; }
  .support-sidebar { position: static; }
  .support-grid { grid-template-columns: 1fr; }
}

/* footer mobile: 触屏无 hover，二级目录平铺 */
@media (max-width: 768px) {
  .footer-cols { flex-direction: column; gap: 6px; }
  .footer-col { width: 100%; }
  .fc-sub {
    position: static; bottom: auto; margin: 6px 0 0;
    opacity: 1; visibility: visible; transform: none;
    box-shadow: none; background: rgba(255,255,255,.06); border-radius: 8px;
    min-width: 0; display: block;
  }
  .fc-sub::before, .fc-sub::after { display: none; }
  .fc-sub a { color: #B9CBDA; }
  .fc-sub a:hover { background: rgba(255,255,255,.08); color: #fff; }
}