/* =========================================================
   SENVIV 中科新知 · 企业官网静态版设计系统
   风格：简约大气 · 医疗科技感
   设计令牌（Design Tokens）集中管理，便于后续主题化
   ========================================================= */

:root {
  /* 品牌色 · 适配新 Logo 爱心红→深红基调 */
  --primary: #C1121F;          /* 品牌红（醒目/爱心） */
  --primary-dark: #6A040F;     /* 深酒红 */
  --primary-light: #FF4D6D;    /* 亮粉 */
  --accent: #FF758F;           /* 活力粉橙 */
  --accent-soft: #FFF0F2;      /* 浅粉底 */
  --accent-dark: #A4161A;

  /* 中性色 */
  --ink: #2B0A0C;              /* 标题深墨 */
  --text: #5C3A3D;             /* 正文 */
  --text-muted: #9B7A7D;       /* 次要文字 */
  --bg: #FFFFFF;
  --bg-soft: #FFF7F8;          /* 浅粉底 */
  --bg-deep: #2B0507;          /* 深色区块 */
  --border: #F4E0E3;
  --border-strong: #EAD0D4;

  /* 尺寸 */
  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(89, 14, 20, 0.06);
  --shadow: 0 12px 32px rgba(89, 14, 20, 0.10);
  --shadow-lg: 0 24px 60px rgba(89, 14, 20, 0.16);
  --shadow-accent: 0 14px 34px rgba(255, 77, 109, 0.28);

  /* 字体 */
  --font-head: "Montserrat", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-body: "Open Sans", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================== 基础 ===================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5 { font-family: var(--font-head); color: var(--ink); line-height: 1.25; font-weight: 600; letter-spacing: -0.01em; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img, svg { max-width: 100%; display: block; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section.soft { background: var(--bg-soft); }
.section.deep { background: var(--bg-deep); color: #F7DEE1; }
.section.deep h2, .section.deep h3 { color: #fff; }

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px;
  font-family: var(--font-head); font-weight: 600; font-size: 15px;
  cursor: pointer; border: none; transition: var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--primary); border: 1.5px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--primary); background: var(--accent-soft); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline-light { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-sm { padding: 10px 22px; font-size: 14px; }

/* ===================== 顶部导航 ===================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.0); transition: var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm); border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo-mark { width: 40px; height: 40px; }
.brand .logo-text { font-family: var(--font-head); font-weight: 700; font-size: 20px; color: #fff; letter-spacing: 0.5px; }
.site-header.scrolled .brand .logo-text { color: var(--ink); }
.brand .logo-text small { display: block; font-size: 11px; font-weight: 400; letter-spacing: 2px; color: var(--accent); }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu > li > a {
  display: block; padding: 10px 16px; font-size: 15px; font-weight: 500;
  color: rgba(255,255,255,0.9); border-radius: 8px; position: relative;
}
.site-header.scrolled .nav-menu > li > a { color: var(--text); }
.nav-menu > li > a:hover { color: #fff; }
.site-header.scrolled .nav-menu > li > a:hover { color: var(--primary); }
.nav-menu > li > a.active { color: #fff; }
.site-header.scrolled .nav-menu > li > a.active { color: var(--primary); font-weight: 600; }
.nav-menu > li > a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 2px;
  background: var(--accent); border-radius: 2px;
}
.nav-cta { margin-left: 12px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 26px; height: 2px; background: #fff; border-radius: 2px; transition: var(--transition); }
.site-header.scrolled .nav-toggle span { background: var(--ink); }

/* ===================== Hero ===================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: radial-gradient(1200px 600px at 80% 10%, rgba(22,184,166,0.25), transparent 60%),
              radial-gradient(900px 500px at 10% 90%, rgba(14,90,167,0.35), transparent 55%),
              linear-gradient(135deg, #2B0507 0%, #C1121F 100%);
  color: #fff; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Ccircle cx='2' cy='2' r='1.4' fill='%23ffffff' fill-opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.6;
}
.hero .container { position: relative; z-index: 2; padding-top: 120px; padding-bottom: 80px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px;
  background: rgba(255,255,255,0.10); border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px; font-size: 13px; letter-spacing: 1px; color: #FFD6DC; margin-bottom: 24px;
}
.hero-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(22,184,166,0.3); }
.hero h1 { font-size: clamp(34px, 4.6vw, 58px); color: #fff; margin-bottom: 22px; font-weight: 700; }
.hero h1 .grad { background: linear-gradient(90deg, #FF9EAA, #FF4D6D); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 18px; color: rgba(255,255,255,0.82); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stats .stat .num { font-family: var(--font-head); font-size: 34px; font-weight: 700; color: #fff; }
.hero-stats .stat .num span { color: var(--accent); }
.hero-stats .stat .label { font-size: 13px; color: rgba(255,255,255,0.65); letter-spacing: 0.5px; }

/* Hero 抽象视觉（无具体图片/数据卡片） */
.hero-visual { position: relative; display: grid; place-items: center; }
.hero-abstract {
  position: relative; width: 420px; height: 420px; max-width: 100%;
  display: grid; place-items: center;
}
.ha-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  animation: ha-spin 18s linear infinite;
}
.ha-ring-1 { width: 360px; height: 360px; }
.ha-ring-2 { width: 260px; height: 260px; border-style: dashed; animation-direction: reverse; animation-duration: 22s; }
.ha-core {
  width: 170px; height: 170px; border-radius: 50%;
  background: linear-gradient(135deg, #FF4D6D, #8D0801);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  box-shadow: 0 24px 60px rgba(141,8,1,0.35), inset 0 0 0 1px rgba(255,255,255,0.2);
  position: relative; z-index: 2;
}
.ha-core svg { width: 64px; height: 64px; fill: #fff; filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2)); }
.ha-core .ha-label { font-family: var(--font-head); font-size: 13px; color: rgba(255,255,255,0.92); margin-top: 10px; letter-spacing: 1px; }
.ha-orb { position: absolute; border-radius: 50%; background: rgba(255,255,255,0.15); filter: blur(2px); }
.orb-1 { width: 18px; height: 18px; top: 28px; right: 80px; }
.orb-2 { width: 26px; height: 26px; bottom: 60px; left: 60px; }
.orb-3 { width: 12px; height: 12px; top: 110px; left: 50px; }
@keyframes ha-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* Hero 视觉卡片（旧版保留类名但不再用于首页） */
.hero-card {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-lg); padding: 28px; backdrop-filter: blur(10px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.25);
}
.hero-card .ec-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.hero-card .ec-head .t { font-family: var(--font-head); font-weight: 600; color: #fff; }
.pulse-ring { width: 64px; height: 64px; border-radius: 50%; background: radial-gradient(circle, var(--accent), transparent 70%); display: grid; place-items: center; position: relative; }
.pulse-ring::after { content: ""; position: absolute; inset: -6px; border: 2px solid var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
.pulse-ring svg { width: 30px; height: 30px; fill: #fff; }
@keyframes pulse { 0% { transform: scale(0.9); opacity: 0.9; } 100% { transform: scale(1.5); opacity: 0; } }
.vital-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.vital-row:last-child { border-bottom: none; }
.vital-row .v-label { font-size: 14px; color: rgba(255,255,255,0.8); }
.vital-row .v-val { font-family: var(--font-head); font-weight: 700; font-size: 18px; color: #fff; }
.vital-row .v-val.good { color: #FF9EAA; }
.spark { display: flex; align-items: flex-end; gap: 4px; height: 36px; }
.spark i { width: 6px; background: linear-gradient(var(--accent), var(--primary-light)); border-radius: 3px; opacity: 0.85; }

/* ===================== 区块标题 ===================== */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block; font-family: var(--font-head); font-size: 13px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(28px, 3.4vw, 42px); margin-bottom: 16px; }
.section-head p { color: var(--text-muted); font-size: 17px; }
.section-head.left { text-align: left; margin-left: 0; }

/* ===================== 特性网格 ===================== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 30px; transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent)); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-card .ic {
  width: 60px; height: 60px; border-radius: 14px; background: var(--accent-soft);
  display: grid; place-items: center; margin-bottom: 22px; color: var(--accent-dark);
}
.feature-card .ic svg { width: 30px; height: 30px; }
.feature-card h3 { font-size: 20px; margin-bottom: 12px; }
.feature-card p { color: var(--text-muted); font-size: 15px; }

/* ===================== 数据带 ===================== */
.stats-band { background: linear-gradient(120deg, var(--primary-dark), var(--primary)); color: #fff; }
.stats-band .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-top: 56px; padding-bottom: 56px; }
.stats-band .stat { text-align: center; }
.stats-band .stat .num { font-family: var(--font-head); font-size: 44px; font-weight: 700; color: #fff; }
.stats-band .stat .num span { color: #FF9EAA; }
.stats-band .stat .label { color: rgba(255,255,255,0.78); font-size: 15px; margin-top: 6px; }

/* ===================== 产品卡 ===================== */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.product-card {
  display: grid; grid-template-columns: 200px 1fr; gap: 0; background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.product-card .pc-visual {
  background: linear-gradient(160deg, var(--primary), var(--primary-dark)); display: grid; place-items: center;
  position: relative; padding: 24px;
}
.product-card .pc-visual svg { width: 96px; height: 96px; fill: rgba(255,255,255,0.92); }
.product-card .pc-body { padding: 30px 28px; }
.product-card .pc-tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent-dark); background: var(--accent-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; letter-spacing: 0.5px; }
.product-card h3 { font-size: 22px; margin-bottom: 10px; }
.product-card p { color: var(--text-muted); font-size: 15px; margin-bottom: 18px; }
.product-card .pc-link { font-family: var(--font-head); font-weight: 600; color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.product-card .pc-link:hover { gap: 10px; }

/* ===================== 合作伙伴 ===================== */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.partner-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 24px; text-align: center; transition: var(--transition);
}
.partner-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--primary-light); }
.partner-card .logo-box {
  height: 72px; display: grid; place-items: center; margin-bottom: 18px;
}
.partner-card .logo-box svg { height: 44px; }
.partner-card h4 { font-size: 17px; margin-bottom: 6px; color: var(--ink); }
.partner-card p { font-size: 13px; color: var(--text-muted); }

/* ===================== 新闻卡 ===================== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition); display: flex; flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.news-card .thumb { aspect-ratio: 16/10; background: linear-gradient(135deg, var(--primary-light), var(--accent)); position: relative; display: grid; place-items: center; overflow: hidden; }
.news-card .thumb svg { width: 80px; height: 80px; fill: rgba(255,255,255,0.85); }
.news-card .thumb .cat { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,0.92); color: var(--primary); font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 999px; }
.news-card .body { padding: 24px 24px 28px; flex: 1; display: flex; flex-direction: column; }
.news-card .meta { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; display: flex; gap: 12px; }
.news-card .meta .date { color: var(--accent-dark); font-weight: 600; }
.news-card h3 { font-size: 18px; margin-bottom: 10px; line-height: 1.4; }
.news-card p { color: var(--text-muted); font-size: 14px; flex: 1; }
.news-card .more { margin-top: 16px; font-family: var(--font-head); font-weight: 600; color: var(--primary); font-size: 14px; }

/* ===================== 关于 / 时间线 ===================== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-grid .media { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: linear-gradient(160deg, var(--primary), var(--accent)); aspect-ratio: 4/5; display: grid; place-items: center; }
.about-grid .media svg { width: 160px; height: 160px; fill: rgba(255,255,255,0.9); }
.about-grid .content h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 20px; }
.about-grid .content p { color: var(--text-muted); margin-bottom: 18px; }
.value-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; }
.value-list .v { display: flex; gap: 14px; }
.value-list .v .vic { flex: none; width: 44px; height: 44px; border-radius: 12px; background: var(--accent-soft); display: grid; place-items: center; color: var(--accent-dark); }
.value-list .v .vic svg { width: 22px; height: 22px; }
.value-list .v h4 { font-size: 16px; margin-bottom: 4px; }
.value-list .v p { font-size: 13px; color: var(--text-muted); margin: 0; }

.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--border-strong); }
.timeline .item { position: relative; padding-bottom: 36px; }
.timeline .item::before { content: ""; position: absolute; left: -30px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg); box-shadow: 0 0 0 3px var(--accent-soft); }
.timeline .item .year { font-family: var(--font-head); font-weight: 700; color: var(--primary); font-size: 18px; }
.timeline .item h4 { font-size: 17px; margin: 4px 0 6px; }
.timeline .item p { color: var(--text-muted); font-size: 14px; }

/* ===================== 科研成果 ===================== */
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.research-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; transition: var(--transition); }
.research-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: transparent; }
.research-card .ric { width: 54px; height: 54px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: grid; place-items: center; color: #fff; margin-bottom: 20px; }
.research-card .ric svg { width: 26px; height: 26px; }
.research-card h3 { font-size: 19px; margin-bottom: 10px; }
.research-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 16px; }
.research-card .tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.research-card .tag-row span { font-size: 12px; background: var(--bg-soft); border: 1px solid var(--border); color: var(--text); padding: 4px 10px; border-radius: 999px; }

/* ===================== CTA 条 ===================== */
.cta-band { background: linear-gradient(120deg, var(--primary-dark), var(--accent-dark)); color: #fff; text-align: center; }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3vw, 38px); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto 30px; }
.cta-band .hero-actions { justify-content: center; }

/* ===================== 联系我们 ===================== */
.contact-wrap { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 48px; align-items: start; }
.contact-info .ci-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px dashed var(--border); }
.contact-info .ci-item:last-child { border-bottom: none; }
.contact-info .ci-ic { flex: none; width: 50px; height: 50px; border-radius: 12px; background: var(--accent-soft); color: var(--accent-dark); display: grid; place-items: center; }
.contact-info .ci-ic svg { width: 24px; height: 24px; }
.contact-info .ci-item h4 { font-size: 16px; margin-bottom: 4px; }
.contact-info .ci-item p { color: var(--text-muted); font-size: 15px; margin: 0; }
.contact-info .ci-item a:hover { color: var(--primary); }

.map-box { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); margin-top: 22px; background: var(--bg-soft); position: relative; }
.map-box .map-canvas { aspect-ratio: 16/9; background:
  linear-gradient(rgba(193,18,31,0.05), rgba(193,18,31,0.05)),
  repeating-linear-gradient(0deg, transparent, transparent 38px, rgba(193,18,31,0.06) 38px, rgba(193,18,31,0.06) 39px),
  repeating-linear-gradient(90deg, transparent, transparent 38px, rgba(193,18,31,0.06) 90px, rgba(193,18,31,0.06) 91px),
  #FFF0F2;
  position: relative;
}
.map-box .pin { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-100%); }
.map-box .pin svg { width: 40px; height: 40px; filter: drop-shadow(0 6px 8px rgba(0,0,0,0.25)); }
.map-box .map-label { position: absolute; bottom: 12px; left: 12px; background: rgba(255,255,255,0.95); padding: 8px 14px; border-radius: 8px; font-size: 13px; color: var(--ink); box-shadow: var(--shadow-sm); }

.form-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 22px; margin-bottom: 6px; }
.form-card .sub { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field label .req { color: #E04B4B; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 15px; color: var(--ink); background: var(--bg-soft);
  transition: var(--transition);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(193,18,31,0.10); }
.field textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: 13px; color: var(--text-muted); margin-top: 10px; }
.form-success { display: none; padding: 14px 18px; background: var(--accent-soft); color: var(--accent-dark); border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 14px; border: 1px solid rgba(22,184,166,0.3); }
.form-success.show { display: block; }

/* ===================== 页脚 ===================== */
.site-footer { background: var(--bg-deep); color: #E8C5C9; padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-grid .f-brand .logo-text { font-family: var(--font-head); font-weight: 700; font-size: 22px; color: #fff; }
.footer-grid .f-brand p { margin: 16px 0; font-size: 14px; color: #D4A8AD; max-width: 320px; }
.footer-grid .f-brand .social { display: flex; gap: 12px; }
.footer-grid .f-brand .social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,0.08); display: grid; place-items: center; color: #F7DEE1; }
.footer-grid .f-brand .social a:hover { background: var(--accent); color: #fff; }
.footer-grid .f-brand .social svg { width: 18px; height: 18px; fill: currentColor; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-family: var(--font-head); }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; color: #E8C5C9; }
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }
.footer-col .f-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: #E8C5C9; }
.footer-col .f-contact li svg { width: 16px; height: 16px; fill: var(--accent); flex: none; margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.10); padding: 24px 0; text-align: center; font-size: 13px; color: #B58E93; }
.footer-bottom a { color: #E8C5C9; }
.footer-bottom a:hover { color: #fff; }

/* ===================== 返回顶部 ===================== */
.to-top { position: fixed; right: 26px; bottom: 26px; width: 46px; height: 46px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transform: translateY(10px); transition: var(--transition); z-index: 900; }
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--primary-dark); }
.to-top svg { width: 20px; height: 20px; fill: #fff; }

/* ===================== 内页页头 ===================== */
.page-hero {
  position: relative; padding: 150px 0 72px; color: #fff; overflow: hidden;
  background: radial-gradient(900px 500px at 85% 0%, rgba(22,184,166,0.28), transparent 60%),
              linear-gradient(135deg, #2B0507 0%, #C1121F 100%);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Ccircle cx='2' cy='2' r='1.4' fill='%23ffffff' fill-opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.6;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .eyebrow { color: #FF9EAA; font-family: var(--font-head); font-weight: 600; letter-spacing: 3px; font-size: 13px; text-transform: uppercase; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 48px); margin: 14px 0 14px; }
.page-hero p { color: rgba(255,255,255,0.82); font-size: 17px; max-width: 640px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 16px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }

/* 双栏文本块 */
.split-text { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.split-text h3 { font-size: 20px; margin-bottom: 12px; }
.split-text p { color: var(--text-muted); margin-bottom: 14px; }

/* 列表型条目 */
.list-card { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--border); }
.list-card:last-child { border-bottom: none; }
.list-card .lc-year { flex: none; width: 96px; font-family: var(--font-head); font-weight: 700; color: var(--primary); }
.list-card .lc-body h4 { font-size: 17px; margin-bottom: 6px; }
.list-card .lc-body p { color: var(--text-muted); font-size: 14px; margin: 0; }

/* 大图占位（科研/场景） */
.figure { border-radius: var(--radius); overflow: hidden; background: linear-gradient(160deg, var(--primary), var(--accent)); aspect-ratio: 16/10; display: grid; place-items: center; }
.figure svg { width: 120px; height: 120px; fill: rgba(255,255,255,0.9); }

/* 深色区块内的联系信息适配 */
.section.deep .contact-info .ci-item h4 { color: #fff; }
.section.deep .contact-info .ci-item p { color: rgba(255,255,255,0.82); }
.section.deep .contact-info .ci-item a { color: rgba(255,255,255,0.82); }
.section.deep .contact-info .ci-item a:hover { color: #FF9EAA; }
.section.deep .contact-info .ci-ic { background: rgba(255,255,255,0.10); color: #FF9EAA; }

/* ===================== 产品详情二级页（统一模板） ===================== */
/* 参考 ihypnus 产品页（配件清单/规格参数表）+ zcool（图文混排/留白）整合重设计 */

/* 产品概览：左图右文双栏 */
.pd-intro { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 60px; align-items: center; }
.pd-intro.reverse .pd-intro-media { order: 2; }
.pd-intro-media {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: radial-gradient(120% 120% at 30% 20%, rgba(255,77,109,0.35), transparent 55%),
              linear-gradient(160deg, var(--primary), var(--primary-dark));
  aspect-ratio: 4/3; display: grid; place-items: center; box-shadow: var(--shadow-lg);
}
.pd-intro-media svg { width: 62%; height: auto; fill: rgba(255,255,255,0.95); filter: drop-shadow(0 16px 30px rgba(0,0,0,0.25)); }
.pd-intro-media .pd-float { position: absolute; border-radius: 50%; background: rgba(255,255,255,0.16); filter: blur(1px); }
.pd-intro-media .pf1 { width: 60px; height: 60px; top: 22px; right: 28px; }
.pd-intro-media .pf2 { width: 28px; height: 28px; bottom: 30px; left: 36px; }
.pd-badge {
  display: inline-block; font-family: var(--font-head); font-size: 13px; font-weight: 600;
  color: var(--accent-dark); background: var(--accent-soft); padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.pd-intro-body h2 { font-size: clamp(24px, 2.8vw, 34px); margin-bottom: 16px; }
.pd-intro-body > p { color: var(--text-muted); font-size: 16px; margin-bottom: 22px; }
.pd-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; margin-bottom: 28px; }
.pd-highlights li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--text); }
.pd-highlights li svg { flex: none; width: 20px; height: 20px; fill: var(--primary); margin-top: 3px; }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* 技术规格参数表（参考 ihypnus 规格表） */
.spec-table { width: 100%; border-collapse: separate; border-spacing: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.spec-table caption { caption-side: top; text-align: left; font-family: var(--font-head); font-weight: 600; color: var(--ink); font-size: 17px; padding: 0 0 16px; }
.spec-table tr { border-bottom: 1px solid var(--border); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table th, .spec-table td { padding: 16px 22px; font-size: 15px; text-align: left; vertical-align: top; }
.spec-table th { width: 32%; background: var(--bg-soft); color: var(--ink); font-family: var(--font-head); font-weight: 600; border-right: 1px solid var(--border); }
.spec-table td { color: var(--text); }
.spec-table tr:hover td, .spec-table tr:hover th { background: var(--accent-soft); }

/* 图文交替区块（参考 zcool 图文混排） */
.pd-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 64px; }
.pd-block:last-child { margin-bottom: 0; }
.pd-block.reverse .pd-block-media { order: 2; }
.pd-block-media {
  border-radius: var(--radius); overflow: hidden; background: linear-gradient(160deg, var(--primary-light), var(--accent-dark));
  aspect-ratio: 16/11; display: grid; place-items: center; box-shadow: var(--shadow);
}
.pd-block-media svg { width: 110px; height: 110px; fill: rgba(255,255,255,0.92); }
.pd-block-body .pb-step { font-family: var(--font-head); font-weight: 700; color: var(--accent); font-size: 14px; letter-spacing: 2px; }
.pd-block-body h3 { font-size: 22px; margin: 8px 0 12px; }
.pd-block-body p { color: var(--text-muted); font-size: 16px; margin-bottom: 14px; }

/* 配件清单（参考 ihypnus In the Box） */
.accessory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.accessory-item { display: flex; gap: 16px; align-items: center; padding: 22px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.accessory-item:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: transparent; }
.accessory-item .ai-ic { flex: none; width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: grid; place-items: center; color: #fff; }
.accessory-item .ai-ic svg { width: 26px; height: 26px; }
.accessory-item .ai-txt h4 { font-size: 16px; margin-bottom: 2px; }
.accessory-item .ai-txt p { font-size: 13px; color: var(--text-muted); margin: 0; }

/* 相关产品 */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.rel-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.rel-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.rel-card .rel-vis { aspect-ratio: 16/9; background: linear-gradient(160deg, var(--primary), var(--primary-dark)); display: grid; place-items: center; }
.rel-card .rel-vis svg { width: 70px; height: 70px; fill: rgba(255,255,255,0.92); }
.rel-card .rel-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.rel-card .rel-tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent-dark); background: var(--accent-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 10px; align-self: flex-start; }
.rel-card h4 { font-size: 18px; margin-bottom: 8px; }
.rel-card p { color: var(--text-muted); font-size: 14px; flex: 1; margin-bottom: 14px; }
.rel-card .rel-link { font-family: var(--font-head); font-weight: 600; color: var(--primary); font-size: 14px; }

@media (max-width: 980px) {
  .pd-intro, .pd-block, .accessory-grid, .related-grid { grid-template-columns: 1fr; }
  .pd-intro.reverse .pd-intro-media, .pd-block.reverse .pd-block-media { order: 0; }
  .pd-block { gap: 24px; margin-bottom: 44px; }
  .accessory-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .pd-highlights { grid-template-columns: 1fr; }
  .accessory-grid { grid-template-columns: 1fr; }
  .spec-table th, .spec-table td { padding: 13px 14px; font-size: 14px; }
  .spec-table th { width: 38%; }
}

/* ===================== 动画 ===================== */
.reveal { opacity: 0; transform: translateY(28px); transition: 0.7s cubic-bezier(0.2,0.7,0.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ===================== 响应式 ===================== */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 460px; }
  .feature-grid, .news-grid, .research-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-band .container { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .nav-menu, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .site-header.mobile-open { background: #fff; }
  .site-header.mobile-open .brand .logo-text { color: var(--ink); }
  .site-header.mobile-open .nav-toggle span { background: var(--ink); }
  .nav-menu.open {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; top: 80px; left: 0; right: 0; background: #fff; padding: 12px 24px 24px;
    box-shadow: var(--shadow); border-top: 1px solid var(--border);
  }
  .site-header.mobile-open .nav-menu.open > li > a { color: var(--text); }
  .site-header.mobile-open .nav-menu.open > li > a.active { color: var(--primary); }
  .nav-cta.show-mobile { display: block; margin: 12px 0 0; }
  .nav-menu.open .nav-cta { display: block; margin: 12px 0 0; }
  .nav-menu.open .nav-cta .btn { width: 100%; justify-content: center; }
  .feature-grid, .news-grid, .research-grid, .partner-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-band .container { grid-template-columns: 1fr 1fr; }
  .product-card { grid-template-columns: 1fr; }
  .product-card .pc-visual { aspect-ratio: 16/9; }
  .value-list { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .hero-stats .stat .num { font-size: 28px; }
}