/* ==========================================================================
   绫虫簮鐢熺墿瀹樼綉 - 鍏ㄥ眬鏍峰紡 (Miyuan Biotech)
   鍝佺墝閰嶈壊锛氭繁钃?+ 妞嶇墿缁匡紙鍙栬嚜鍏徃 Logo锛?   绾?CSS锛屾棤渚濊禆銆傝瑷€鍒囨崲閫氳繃 body.lang-en 鎺у埗锛堣 main.js锛?   ========================================================================== */

:root {
  --blue-900: #113568;
  --blue-800: #143a72;
  --blue-700: #1b4d9b;
  --blue-600: #2563b8;
  --blue-500: #2e6fbf;
  --green-600: #5aa32f;
  --green-500: #6bb33f;
  --green-400: #86c95c;
  --teal: #3fb6c6;

  --ink: #16243a;
  --muted: #5c6b7a;
  --bg: #ffffff;
  --bg-soft: #f3f8fc;
  --bg-blue: #0e2a52;
  --border: #e3ebf3;

  --grad: linear-gradient(120deg, var(--blue-700) 0%, var(--blue-500) 55%, var(--green-600) 130%);
  --grad-bright: linear-gradient(120deg, var(--blue-600), var(--green-500));

  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 10px 30px rgba(20, 58, 114, .08);
  --shadow-lg: 0 20px 55px rgba(20, 58, 114, .16);
  --maxw: 1180px;
  --header-h: 72px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.28; margin: 0 0 .4em; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 64px 0; }

.section-head { max-width: 740px; margin-bottom: 48px; }
.section-head.center { margin-left: 0; margin-right: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue-700); background: none; padding: 0; border-radius: 0; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; opacity: .55; }
.eyebrow.green { color: var(--green-600); background: none; }
.section-head h2 { font-size: 34px; letter-spacing: -.01em; }
.section-head p { color: var(--muted); font-size: 17px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px;
  border-radius: 999px; font-weight: 600; font-size: 15px; cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--blue-700); color: #fff; box-shadow: var(--shadow); }
.btn--primary:hover { background: var(--blue-800); }
.btn--green { background: var(--green-600); color: #fff; box-shadow: var(--shadow); }
.btn--green:hover { background: var(--green-500); }
.btn--ghost { background: transparent; color: var(--blue-700); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--blue-700); }
.btn--light { background: #fff; color: var(--blue-800); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  display: flex; align-items: center; background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; }
.brand img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 9px 15px; border-radius: 8px; font-size: 15px; color: var(--muted);
  font-weight: 500; transition: color .2s, background .2s;
}
.nav a:hover { color: var(--blue-700); background: var(--bg-soft); }
.nav a.active { color: var(--blue-700); font-weight: 700; }
.nav .btn { margin-left: 10px; padding: 10px 20px; }

/* 璇█鍒囨崲 */
.lang-switch {
  display: inline-flex; border: 1px solid var(--border); border-radius: 999px;
  overflow: hidden; margin-left: 12px;
}
.lang-switch button {
  border: 0; background: transparent; cursor: pointer; font-family: inherit;
  font-size: 13px; padding: 7px 13px; color: var(--muted); font-weight: 600;
}
.lang-switch button.active { background: var(--blue-700); color: #fff; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: 92px 0 84px; overflow: hidden;
  background:
    radial-gradient(900px 460px at 92% -8%, #e6f4e4, transparent 62%),
    radial-gradient(760px 420px at -6% 12%, #e7f0fc, transparent 60%),
    linear-gradient(180deg, #fbfdff, #ffffff);
}
.hero .container { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }
.hero h1 { font-size: 46px; letter-spacing: -.01em; }
.hero h1 .hl { color: var(--green-600); }
.hero .lead { font-size: 18px; color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.hero-stats { display: flex; gap: 40px; margin-top: 40px; padding-top: 26px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.hero-stats .num { font-size: 30px; font-weight: 800; color: var(--blue-800); line-height: 1.1; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.hero-stats .lbl { font-size: 13px; color: var(--muted); }

/* 通栏巨幕高清视觉版（对标百奥华兴/组学生物等顶级品牌官网） */
.hero--cinema {
  --hero-shade: linear-gradient(90deg, rgba(8, 20, 40, .96) 0%, rgba(8, 20, 40, .86) 38%, rgba(8, 20, 40, .54) 64%, rgba(8, 20, 40, .18) 85%, rgba(8, 20, 40, .05) 100%);
  padding: 120px 0 100px;
  background-color: #0c1c30;
  background-image:
    var(--hero-shade),
    url('../images/hero-banner.jpg');
  background-image:
    var(--hero-shade),
    image-set(
      url('../images/hero-banner.webp') type('image/webp'),
      url('../images/hero-banner.jpg') type('image/jpeg')
    );
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  color: #fff;
  min-height: 620px;
  display: flex;
  align-items: center;
}
.hero--cinema .container {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 48px;
  align-items: center;
}
.hero--cinema h1 {
  font-size: 50px;
  color: #ffffff;
  line-height: 1.2;
  text-shadow: 0 3px 14px rgba(0, 0, 0, .45);
}
.hero--cinema h1 .hl {
  color: #8be158;
  text-shadow: 0 0 24px rgba(139, 225, 88, .35);
}
.hero--cinema .lead {
  font-size: 17.5px;
  color: rgba(255, 255, 255, .90);
  line-height: 1.75;
  max-width: 660px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, .4);
}
.hero--cinema .eyebrow--light {
  background: none;
  border: 0;
  padding: 0;
  color: #a8f47c;
  letter-spacing: .14em;
}
.hero--cinema .hero-stats {
  border-top: 1px solid rgba(255, 255, 255, .18);
  margin-top: 36px;
  padding-top: 24px;
}
.hero--cinema .hero-stats .num {
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .35);
}
.hero--cinema .hero-stats .lbl {
  color: rgba(255, 255, 255, .78);
}
.hero--cinema .hero-badge {
  display: flex;
  justify-content: flex-end;
}
.hero--cinema .hero-badge-inner {
  background: rgba(10, 26, 52, .58);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(10px);
  padding: 32px 34px;
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .3);
  max-width: 380px;
  color: #fff;
}
.hero--cinema .hero-badge-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: #a8f47c;
  background: none;
  border: 0;
  padding: 0;
  border-radius: 0;
  margin-bottom: 14px;
}
.hero--cinema .hero-badge-inner strong {
  display: block;
  font-size: 22px;
  margin-bottom: 6px;
  letter-spacing: .02em;
}
.hero--cinema .hero-badge-inner span {
  display: block;
  font-size: 11px;
  opacity: .75;
  letter-spacing: .08em;
}

/* EN strings run longer: tighten the two places that overflow */
.lang-en .hero--cinema h1 { font-size: 40px; }
.lang-en .hero--cinema .hero-badge-inner strong { font-size: 18px; letter-spacing: 0; }

@media (max-width: 980px) {
  .hero--cinema { padding: 90px 0 70px; min-height: auto; }
  .hero--cinema .container { grid-template-columns: 1fr; gap: 36px; }
  .hero--cinema h1 { font-size: 38px; }
  .hero--cinema .hero-badge { justify-content: flex-start; }
  .hero--cinema {
    background-image:
      var(--hero-shade),
      url('../images/hero-banner.jpg');
    background-image:
      var(--hero-shade),
      image-set(
        url('../images/hero-banner-1280.webp') type('image/webp'),
        url('../images/hero-banner.jpg') type('image/jpeg')
      );
    background-position: center;
  }
}

.hero-visual {
  aspect-ratio: 4 / 3.3; border-radius: var(--radius-lg); position: relative;
  overflow: hidden; background: url('../images/hero.jpg') center / cover no-repeat; box-shadow: var(--shadow-lg);
}
.hero-visual::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(180deg, rgba(12, 32, 68, .18) 0%, rgba(12, 32, 68, .35) 55%, rgba(10, 26, 56, .82) 100%);
}
.hero-visual .tag { position: absolute; left: 28px; bottom: 26px; color: #fff; z-index: 1; text-shadow: 0 2px 10px rgba(0, 0, 0, .45); }
.hero-visual .tag strong { display: block; font-size: 20px; }
.hero-visual .tag span { font-size: 12px; opacity: .88; letter-spacing: .04em; }
.hero-visual .float {
  position: absolute; top: 30px; right: 28px; z-index: 1; background: rgba(14, 38, 76, .52);
  border: 1px solid rgba(255, 255, 255, .32); backdrop-filter: blur(8px); color: #fff;
  padding: 14px 18px; border-radius: 14px; font-size: 13px; line-height: 1.5; font-weight: 600;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .18);
}

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card.card--link { display: flex; flex-direction: column; color: inherit; text-decoration: none; cursor: pointer; }
.card.card--link h3 { color: var(--blue-800); transition: color .2s; }
.card.card--link:hover { border-color: var(--blue-500); }
.card.card--link:hover h3 { color: var(--blue-600); }
.card .card-more { margin-top: auto; padding-top: 16px; font-size: 13.5px; font-weight: 700; color: var(--blue-600); display: inline-flex; align-items: center; gap: 4px; transition: gap .2s, color .2s; }
.card.card--link:hover .card-more { color: var(--green-600); gap: 8px; }
.card .icon {
  width: 28px; height: 28px; margin-bottom: 18px; color: var(--blue-600);
  display: block; padding: 0; background: none; border-radius: 0;
}
.card .icon svg { width: 28px; height: 28px; display: block; }
.card .icon.green { color: var(--blue-600); }
.card.card--link:hover .icon { color: var(--green-600); }
.card h3 { font-size: 19px; }
.card p { color: var(--muted); font-size: 15px; margin: 0; }

/* ---------- Icons ---------- */
.icon { width: 28px; height: 28px; flex: none; }
.icon svg { width: 100%; height: 100%; display: block; }

/* ---------- Service mosaic (home) ---------- */
.service-mosaic { display: grid; grid-template-columns: 1.02fr .98fr; gap: 44px; align-items: stretch; }
.service-feature {
  display: flex; flex-direction: column; padding: 46px 40px; border-radius: var(--radius-lg);
  background: var(--bg-blue); color: #fff; transition: transform .2s, box-shadow .2s;
}
.service-feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.service-feature .icon { color: #8be158; margin-bottom: 24px; }
.service-feature h3 { font-size: 26px; color: #fff; margin-bottom: 10px; }
.service-feature p { color: rgba(255, 255, 255, .76); font-size: 15.5px; max-width: 36ch; margin: 0; }
.service-feature .card-more {
  margin-top: auto; padding-top: 32px; color: #8be158; font-size: 13.5px; font-weight: 700;
  display: inline-flex; align-items: center; gap: 6px; transition: gap .2s;
}
.service-feature:hover .card-more { gap: 10px; }

.service-rows { display: flex; flex-direction: column; justify-content: center; }
.service-row {
  display: grid; grid-template-columns: 28px 1fr; gap: 18px; padding: 22px 0;
  border-top: 1px solid var(--border); align-items: start;
}
.service-row:first-child { border-top: 0; padding-top: 0; }
.service-row:last-child { padding-bottom: 0; }
.service-row .icon { color: var(--blue-600); transition: color .2s; }
.service-row h3 { font-size: 18px; margin-bottom: 6px; transition: color .2s; }
.service-row p { color: var(--muted); font-size: 14.5px; margin: 0; }
.service-row:hover h3, .service-row:hover .icon { color: var(--blue-700); }

/* ---------- Principles band (about) ---------- */
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.principle { padding: 0 34px; border-left: 1px solid var(--border); }
.principle:first-child { padding-left: 0; border-left: 0; }
.principle .icon { color: var(--blue-600); margin-bottom: 16px; }
.principle h3 { font-size: 20px; }
.principle p { color: var(--muted); font-size: 15px; margin: 0; }

/* ---------- Capability list (about) ---------- */
.capability-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 64px; }
.capability {
  display: grid; grid-template-columns: 28px 1fr; gap: 18px; padding: 26px 0;
  border-top: 1px solid var(--border); align-items: start;
}
.capability .icon { color: var(--blue-600); grid-row: 1 / span 2; }
.capability h3 { font-size: 18px; margin-bottom: 6px; grid-column: 2; }
.capability p { color: var(--muted); font-size: 14.5px; margin: 0; grid-column: 2; }
@media (min-width: 981px) {
  .capability:nth-child(1), .capability:nth-child(2) { border-top: 0; padding-top: 0; }
}

/* ---------- Case index (clients) ---------- */
.case-index { display: grid; }
.case-row {
  display: grid; grid-template-columns: .55fr 1.35fr 24px;
  grid-template-areas: "kw main arrow";
  gap: 32px; align-items: center; padding: 34px 20px; margin: 0 -20px;
  border-top: 1px solid var(--border); transition: background .2s;
}
.case-row:last-child { border-bottom: 1px solid var(--border); }
.case-kw {
  grid-area: kw; font-size: 26px; font-weight: 700; line-height: 1.2;
  letter-spacing: .12em; text-transform: uppercase; color: #cddcea;
  transition: color .2s;
}
.case-main { grid-area: main; }
.case-row h3 { font-size: 20px; margin: 0 0 6px; transition: color .2s; }
.case-row p { color: var(--muted); margin: 0; max-width: 50ch; }
.case-arrow { grid-area: arrow; justify-self: end; color: #9db2c7; font-size: 18px; transition: transform .2s, color .2s; }
.case-row:hover { background: var(--bg-soft); }
.case-row:hover .case-kw { color: #a9c0d8; }
.case-row:hover h3 { color: var(--blue-700); }
.case-row:hover .case-arrow { transform: translate(3px, -3px); color: var(--blue-700); }

/* ---------- Service blocks ---------- */
.service {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border); background: #fff; margin-bottom: 28px;
}
.service:nth-child(even) .service-media { order: 2; }
.service-media {
  position: relative; min-height: 300px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-size: 64px;
}
.service-media::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, rgba(255, 255, 255, .06) 0 12px, transparent 12px 24px);
}
.service-media.g2 { background: linear-gradient(130deg, var(--green-600), var(--teal)); }
.service-media.g3 { background: linear-gradient(130deg, var(--blue-800), var(--teal)); }
.service-media.g4 { background: linear-gradient(130deg, var(--green-500), var(--blue-600)); }
.service-body { padding: 44px 42px; }
.service-body h3 { font-size: 24px; }
.service-body > p { color: var(--muted); }
.service-body .num-tag {
  font-size: 13px; font-weight: 800; color: var(--green-600); letter-spacing: .1em;
}

.feature-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 22px; font-size: 15px; }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: .78em; width: 10px; height: 1px;
  background: var(--green-600);
}

/* ---------- Split (text + media) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split .media {
  aspect-ratio: 4 / 3; border-radius: var(--radius-lg); position: relative; overflow: hidden;
  background: url('../images/team.jpg') center / cover no-repeat; box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.split .media--about {
  background-image: url('../images/about.jpg');
}
.split .media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20, 58, 114, 0) 65%, rgba(20, 58, 114, .25) 100%);
}

/* ---------- Stats band ---------- */
.stats-band {
  background: var(--grad); color: #fff; border-radius: var(--radius-lg);
  padding: 52px 44px; box-shadow: var(--shadow-lg);
}
.stats-band .grid-4 { gap: 30px; }
.stats-band .num { font-size: 40px; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.stats-band .lbl { opacity: .86; font-size: 14px; margin-top: 8px; }
.stats-band .note { margin-top: 30px; font-size: 13px; opacity: .8; }

/* ---------- Clients wall ---------- */
.clients-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px;
}
.client-logo {
  height: 86px; border: 1px solid var(--border); border-radius: 12px; background: #fff;
  display: grid; place-items: center; color: var(--muted); font-weight: 600; font-size: 14px;
  padding: 10px; text-align: center; transition: .2s;
}
.client-logo:hover { border-color: var(--blue-500); box-shadow: var(--shadow); color: var(--blue-700); }

/* ---------- CTA ---------- */
.cta {
  background: var(--grad-bright); border-radius: var(--radius-lg); padding: 56px 48px;
  color: #fff; display: flex; align-items: center; justify-content: space-between;
  gap: 32px; flex-wrap: wrap;
}
.cta h2 { font-size: 30px; margin-bottom: 8px; }
.cta p { margin: 0; opacity: .92; }

/* ---------- Page hero ---------- */
.page-hero {
  background:
    radial-gradient(760px 380px at 88% -10%, #e6f4e4, transparent 60%),
    radial-gradient(680px 360px at -4% 20%, #e7f0fc, transparent 58%),
    var(--bg-soft);
  padding: 62px 0; border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: 40px; margin-bottom: 8px; }
.breadcrumb { font-size: 14px; color: var(--muted); }
.breadcrumb a:hover { color: var(--blue-700); }

/* 分类页顶部横幅：图片铺底 + 左侧深色遮罩保证文字可读 */
.page-hero--banner {
  background-color: #0b1e3d;
  background-image:
    linear-gradient(90deg, rgba(7, 20, 44, .95) 0%, rgba(7, 20, 44, .84) 34%, rgba(7, 20, 44, .48) 60%, rgba(7, 20, 44, .10) 82%, rgba(7, 20, 44, 0) 100%),
    var(--banner);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 88px 0 76px;
}
.page-hero--banner h1 { color: #fff; }
.page-hero--banner .lead { color: rgba(255, 255, 255, .86); margin-top: 14px; max-width: 860px; }
.page-hero--banner .breadcrumb { color: rgba(255, 255, 255, .70); }
.page-hero--banner .breadcrumb a { color: rgba(255, 255, 255, .90); }
.page-hero--banner .breadcrumb a:hover { color: #fff; }

/* 每个分类页的横幅图片（相对本样式表，故用 ../images/） */
.page-hero--banner.page-hero--bio   { --banner: url('../images/banner-bio.jpg'); }
.page-hero--banner.page-hero--breed { --banner: url('../images/banner-breed.jpg'); }
.page-hero--banner.page-hero--seq   { --banner: url('../images/banner-seq.jpg'); }
.page-hero--banner.page-hero--train { --banner: url('../images/banner-train.jpg'); }

/* WebP 优先，浏览器不支持 image-set 时保留上面的 JPG */
@supports (background-image: image-set(url('../images/banner-bio.webp') type('image/webp'))) {
  .page-hero--banner.page-hero--bio   { --banner: image-set(url('../images/banner-bio.webp') type('image/webp'), url('../images/banner-bio.jpg') type('image/jpeg')); }
  .page-hero--banner.page-hero--breed { --banner: image-set(url('../images/banner-breed.webp') type('image/webp'), url('../images/banner-breed.jpg') type('image/jpeg')); }
  .page-hero--banner.page-hero--seq   { --banner: image-set(url('../images/banner-seq.webp') type('image/webp'), url('../images/banner-seq.jpg') type('image/jpeg')); }
  .page-hero--banner.page-hero--train { --banner: image-set(url('../images/banner-train.webp') type('image/webp'), url('../images/banner-train.jpg') type('image/jpeg')); }
}

@media (max-width: 720px) {
  .page-hero--banner {
    background-image:
      linear-gradient(180deg, rgba(7, 20, 44, .72) 0%, rgba(7, 20, 44, .88) 100%),
      var(--banner);
  }
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: start; }
.contact-divider { height: 1px; background: var(--border); margin: 72px 0; }
.info-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 40px; }
.info-list li { padding: 16px 0; border-bottom: 1px solid var(--border); }
.info-list li:nth-child(3) { grid-column: 1 / -1; }
.info-list strong { display: block; font-size: 13px; color: var(--muted); font-weight: 600; }
.info-list span, .info-list a { font-size: 16px; }
.info-list a:hover { color: var(--blue-700); }

.qr-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px; text-align: center; box-shadow: var(--shadow);
  width: 100%; max-width: 340px; justify-self: end;
}
.qr-card img { width: auto; max-width: 100%; height: auto; max-height: 260px; object-fit: contain; margin: 0 auto 16px; }
.qr-card h3 { margin-bottom: 4px; }
.qr-card p { color: var(--muted); font-size: 14px; margin: 0; }
.qr-card p.qr-card__note { margin-top: 8px; font-size: 13px; }

.survey { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: start; }
.survey h2, .contact-grid h2 { font-size: 30px; letter-spacing: -.01em; }
.survey p { font-size: 16px; }
.survey__list { list-style: none; padding: 0; margin: 20px 0; }
.survey__list li { position: relative; padding-left: 18px; margin-bottom: 10px; color: var(--ink); }
.survey__list li::before {
  content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--green-600);
}
.survey__note { color: var(--muted); font-size: 14px; }
.survey__qr {
  margin: 0; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 18px; width: 100%; max-width: 340px; justify-self: end;
}
.survey__qr img { display: block; width: auto; max-width: 100%; max-height: 300px; margin: 0 auto; border-radius: var(--radius); }
.survey__qr figcaption { margin-top: 12px; font-size: 13px; color: var(--muted); text-align: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-blue); color: #c6d4e6; padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.footer-brand img { height: 44px; width: auto; background: #fff; border-radius: 8px; padding: 6px 10px; }
.site-footer p { color: #93a7c2; font-size: 14px; margin-top: 16px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; color: #a9bbd6; font-size: 14px; padding: 5px 0; }
.footer-col a:hover { color: var(--green-400); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; font-size: 13px; color: #7f94b3; }
.footer-bottom a:hover { color: #fff; }


/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 40px; }

/* ---------- i18n ---------- */
.lang-en .zh-only { display: none !important; }
.lang-zh .en-only { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 540px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .service { grid-template-columns: 1fr; }
  .service:nth-child(even) .service-media { order: 0; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
  .info-list { grid-template-columns: 1fr; }
  .info-list li:nth-child(3) { grid-column: auto; }
  .contact-divider { margin: 44px 0; }
  .survey { grid-template-columns: 1fr; gap: 32px; }
  .qr-card, .survey__qr { justify-self: center; }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .service-mosaic { grid-template-columns: 1fr; gap: 32px; }
  .service-feature { padding: 36px 30px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle { padding: 24px 0; border-left: 0; border-top: 1px solid var(--border); }
  .principle:first-child { border-top: 0; padding-top: 0; }
  .capability-grid { grid-template-columns: 1fr; }
  .case-row {
    grid-template-columns: 1fr 20px;
    grid-template-areas: "kw kw" "main arrow";
    gap: 10px 12px; padding: 24px 16px; margin: 0 -16px;
  }
  .case-row .case-kw { font-size: 18px; }
  .case-arrow { align-self: start; }
}

@media (max-width: 760px) {
  .section { padding: 60px 0; }
  .hero { padding: 54px 0; }
  .hero h1 { font-size: 33px; }
  .section-head h2 { font-size: 26px; }
  .survey h2, .contact-grid h2 { font-size: 24px; }
  .survey__qr { max-width: 280px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .cta { padding: 40px 28px; }
  .stats-band { padding: 40px 26px; }
  .stats-band .num { font-size: 32px; }
  .service-body { padding: 30px 24px; }

  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0; flex-direction: column;
    align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px; box-shadow: var(--shadow); display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 12px; border-radius: 10px; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
  .lang-switch { margin: 10px 0 0; align-self: flex-start; }
  .nav-toggle { display: block; }
}

/* ==========================================================================
   产品与服务扩展：下拉导航 / 子模块 / 子导航
   ========================================================================== */
.nav-item { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 240px; background: #fff;
  border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-lg);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s, transform .18s, visibility .18s;
}
.nav-item.has-drop:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 9px 12px; border-radius: 8px; font-size: 14px;
  color: var(--muted); font-weight: 500;
}
.dropdown a:hover, .dropdown a.active { background: var(--bg-soft); color: var(--blue-700); }

/* 子导航（吸顶目录） */
.subnav { position: sticky; top: var(--header-h); z-index: 60; background: #fff; border-bottom: 1px solid var(--border); }
.subnav .container { display: flex; gap: 6px; overflow-x: auto; padding-top: 10px; padding-bottom: 10px; }
.subnav a {
  white-space: nowrap; padding: 8px 15px; border-radius: 999px; font-size: 14px;
  color: var(--muted); font-weight: 600;
}
.subnav a:hover { background: var(--bg-soft); color: var(--blue-700); }
.subnav a.active { background: var(--blue-700); color: #fff; }

/* 子模块 */
.submodule {
  padding: 36px 36px 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #ffffff;
  margin-bottom: 32px;
  box-shadow: 0 4px 18px rgba(15, 35, 65, .03);
  scroll-margin-top: calc(var(--header-h) + 62px);
  position: relative;
  overflow: hidden;
}
.submodule:first-child { margin-top: 6px; }
.submodule::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--green-600), var(--teal), var(--blue-600));
  opacity: .85;
}
.submodule-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 6px; }
.submodule-head .num-tag {
  font-size: 15px; font-weight: 800; color: var(--green-600); letter-spacing: .1em; flex: none;
}
.submodule h2 { font-size: 26px; margin: 0; color: var(--blue-800); }
.submodule .lead { color: var(--muted); font-size: 16px; max-width: 840px; }
.mini-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-top: 22px; }
.mini {
  border: 1px solid #e7edf5; border-radius: 12px; padding: 18px 20px 20px;
  background: #f8fafc; transition: transform .2s, border-color .2s, background-color .2s, box-shadow .2s;
}
.mini:hover {
  background: #ffffff; border-color: var(--blue-500);
  transform: translateY(-2px); box-shadow: var(--shadow);
}
.mini h4 { font-size: 15.5px; margin-bottom: 6px; color: var(--blue-800); }
.mini p { font-size: 13.5px; color: var(--muted); margin: 0; line-height: 1.55; }
.mini .m-ico { font-size: 20px; margin-bottom: 8px; }
.lead-note {
  margin-top: 20px; padding: 16px 20px; border-left: 3px solid var(--green-500);
  background: var(--bg-soft); border-radius: 0 10px 10px 0; font-size: 14.5px; color: var(--muted);
}

/* 大类总览卡 */
.cat-card { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: #fff; cursor: pointer; transition: transform .2s, box-shadow .2s, border-color .2s; }
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(20, 58, 114, .25); }
.cat-card .cat-banner {
  height: 140px; position: relative; overflow: hidden;
  background-size: cover; background-position: center;
  display: flex; align-items: flex-end; padding: 18px 22px;
}
.cat-card .cat-banner::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 28, 56, .2) 0%, rgba(10, 28, 56, .78) 100%);
  transition: opacity .25s;
}
.cat-card:hover .cat-banner::before {
  background: linear-gradient(180deg, rgba(10, 28, 56, .05) 0%, rgba(10, 28, 56, .85) 100%);
}
.cat-card .cat-banner-title {
  position: relative; z-index: 1; color: #fff; font-size: 21px; font-weight: 800;
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  text-shadow: 0 2px 8px rgba(0, 0, 0, .45);
}
.cat-card .cat-banner-title a { color: #fff; text-decoration: none; }
.cat-card .cat-banner-title .cat-badge {
  font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, .22); backdrop-filter: blur(4px);
  color: #fff; text-shadow: none;
}
.cat-card .cat-banner--bio   { background-image: url('../images/banner-bio.jpg'); }
.cat-card .cat-banner--breed { background-image: url('../images/banner-breed.jpg'); }
.cat-card .cat-banner--seq   { background-image: url('../images/banner-seq.jpg'); }
.cat-card .cat-banner--train { background-image: url('../images/banner-train.jpg'); }

.cat-card .cat-top { height: 150px; display: grid; place-items: center; font-size: 46px; color: #fff; background: var(--grad); }
.cat-card .cat-top.c2 { background: linear-gradient(130deg, var(--green-600), var(--teal)); }
.cat-card .cat-top.c3 { background: linear-gradient(130deg, var(--blue-800), var(--teal)); }
.cat-card .cat-top.c4 { background: linear-gradient(130deg, var(--green-500), var(--blue-600)); }
.cat-card .cat-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.cat-card .cat-body h3 { font-size: 20px; }
.cat-card .cat-body p { color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.cat-card .cat-action {
  margin-top: 18px; padding-top: 14px; border-top: 1px dashed var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.cat-card .cat-action a.view-link {
  font-size: 13.5px; font-weight: 700; color: var(--blue-600); text-decoration: none;
  display: inline-flex; align-items: center; gap: 4px; transition: color .2s, gap .2s;
}
.cat-card:hover .cat-action a.view-link { color: var(--green-600); gap: 7px; }
.cat-card .cat-body ul { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cat-card .cat-body li { font-size: 12.5px; color: var(--blue-700); background: #e8f1fb; padding: 4px 11px; border-radius: 999px; font-weight: 600; }
.cat-card .cat-body .cat-list li { background: transparent; padding: 0; }
.cat-list { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cat-list li a { display: inline-block; font-size: 13px; color: var(--blue-700); background: #eef4fb; padding: 5px 12px; border-radius: 999px; font-weight: 600; transition: .15s; }
.cat-list li a:hover { background: var(--blue-700); color: #fff; }

@media (max-width: 980px) {
  .mini-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .mini-grid { grid-template-columns: 1fr; }
  .submodule { padding: 40px 0; }
  .submodule h2 { font-size: 22px; }
  .nav-item.has-drop > a::after { content: ""; }
  .nav .dropdown {
    position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
    border: 0; padding: 0 0 0 14px; min-width: 0;
  }
}

/* 核心标签 & 分析优势 */
.core-badge { display: inline-block; font-size: 12px; font-weight: 700; color: #fff; background: var(--green-600); padding: 2px 9px; border-radius: 999px; vertical-align: middle; margin-left: 8px; }
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.flow .step { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 24px 22px; position: relative; }
.flow .step .no { font-size: 13px; font-weight: 800; color: var(--green-600); letter-spacing: .1em; }
.flow .step h4 { font-size: 17px; margin: 6px 0; color: var(--blue-800); }
.flow .step p { font-size: 14px; color: var(--muted); margin: 0; }
@media (max-width: 980px) { .flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .flow { grid-template-columns: 1fr; } }


/* 自媒体矩阵二维码 */
.qr-gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.qr-item { margin: 0; display: flex; flex-direction: column; text-align: center; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px 18px; }
.qr-item img { width: 100%; max-width: 190px; aspect-ratio: 1 / 1; object-fit: contain; margin: 0 auto 14px; border-radius: 10px; background: #fff; }
.qr-item figcaption { font-size: 15px; font-weight: 700; color: var(--blue-800); }
.qr-item span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 4px; }
@media (max-width: 980px) { .qr-gallery { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) { .qr-gallery { grid-template-columns: repeat(2, 1fr); } }


/* 总览卡片改版：小图标 + 子模块标签 */
.cat-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.cat-ico { width: 48px; height: 48px; flex: none; border-radius: 12px; display: grid; place-items: center; font-size: 24px; background: #e8f1fb; }
.cat-ico.green { background: #eef8e6; }
.cat-card .cat-body h3 { font-size: 20px; margin: 0; }
.cat-card h3 a { color: inherit; }
.cat-card h3 a:hover { color: var(--blue-700); }
.cat-card .cat-body .cat-list li { background: transparent; padding: 0; }
.cat-list { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cat-list li a { display: inline-block; font-size: 13px; color: var(--blue-700); background: #eef4fb; padding: 5px 12px; border-radius: 999px; font-weight: 600; transition: .15s; }
.cat-list li a:hover { background: var(--blue-700); color: #fff; }

/* ==========================================================================
   Module figures / client logo wall / publications
   ========================================================================== */
.submodule-body {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 36px; align-items: start; margin-top: 30px;
}
.submodule-body > .submodule-figure { grid-area: 1 / 1; }
.submodule-body > .submodule-text { grid-area: 1 / 2; min-width: 0; }
.submodule:nth-child(even) .submodule-body > .submodule-figure { grid-area: 1 / 2; }
.submodule:nth-child(even) .submodule-body > .submodule-text { grid-area: 1 / 1; }
.submodule-text .lead { max-width: none; font-size: 16px; line-height: 1.75; }

.submodule-figure {
  margin: 0; border: 1px solid var(--border); border-radius: var(--radius);
  background: #fff; overflow: hidden; box-shadow: 0 4px 16px rgba(20, 58, 114, .04);
}
.submodule-figure-stage {
  padding: 14px 16px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}
.submodule-figure-stage img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: contain;
}
.submodule-figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.5;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.submodule-figure figcaption .fig-desc {
  font-weight: 600;
  color: var(--ink);
}
.submodule-figure figcaption .fig-cite {
  font-size: 11.5px;
  color: var(--muted);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  word-break: break-all;
}

/* Client logo wall (text tiles without a logo stay as-is) */
.client-logo img { max-height: 54px; max-width: 100%; width: auto; object-fit: contain; }

/* Publications & selected results */
.paper-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.paper {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s;
}
.paper:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.paper img { width: 100%; height: 150px; display: block; object-fit: contain; object-position: top center; border-bottom: 1px solid var(--border); background: #fff; }
.paper .paper-body { padding: 14px 16px 18px; }
.paper .journal { font-size: 12px; font-weight: 700; color: var(--green-600); letter-spacing: .04em; }
.paper h3 { font-size: 14.5px; margin: 6px 0 0; }
.pub-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 32px; }
.pub-list li { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 14.5px; }
.pub-list .journal { display: block; font-size: 12px; font-weight: 700; color: var(--green-600); }
.paper h3 a, .pub-list li a { color: inherit; }
.paper h3 a:hover, .pub-list li a:hover { color: var(--blue-700); text-decoration: underline; text-underline-offset: 2px; }

@media (max-width: 980px) {
  .paper-grid { grid-template-columns: repeat(2, 1fr); }
  .pub-list { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .submodule-body { grid-template-columns: 1fr; gap: 20px; }
  .submodule-body > .submodule-figure,
  .submodule-body > .submodule-text,
  .submodule:nth-child(even) .submodule-body > .submodule-figure,
  .submodule:nth-child(even) .submodule-body > .submodule-text { grid-area: auto; }
  .submodule-text { order: 1; }
  .submodule-figure { order: 2; }
}
@media (max-width: 760px) {
  .paper-grid { grid-template-columns: 1fr; }
}