/* ==========================================================================
   暨肽基因 JITAI GENE · 官网样式系统 v2
   ---------------------------------------------------------------------------
   品牌色系（科菲俪）
     主色 青绿 #3E8C96   标题 / 边框 / 色块 / 品牌标识
     正文 深灰 #292929   正文一律深灰，禁止纯黑
     背景 白色 #FFFFFF   主背景
     次底 浅灰 #F5F7F8   次要区块背景
     点缀 金色 #C8A568   仅少量点缀，不大面积铺
   纯静态，不加载任何外部字体/脚本/CDN，可离线打开
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌主色 */
  --teal: #3E8C96;
  --teal-deep: #2C6B75;
  --teal-dark: #1B4A52;
  --teal-ink: #123338;
  --teal-soft: #7CB2BA;
  --teal-100: #E4EFF0;
  --teal-50: #F1F7F8;

  /* 中性 */
  --ink: #292929;        /* 正文 */
  --ink-strong: #1F2425; /* 标题（比正文略深，仍非纯黑） */
  --ink-2: #3A4142;
  --ink-3: #5A6365;
  --muted: #6E777A;

  --line: #DCE5E6;
  --line-soft: #EBF1F2;

  --white: #FFFFFF;
  --gray: #F5F7F8;

  /* 点缀金 */
  --gold: #C8A568;
  --gold-deep: #A9863F;

  --shadow-sm: 0 4px 14px rgba(24, 56, 61, .06);
  --shadow-md: 0 12px 32px rgba(24, 56, 61, .09);
  --shadow-lg: 0 24px 64px rgba(24, 56, 61, .12);

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;

  --container: 1180px;
  --gutter: clamp(18px, 4vw, 40px);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;

  --t-hero: clamp(2rem, 4.4vw, 3.4rem);
  --t-h1: clamp(1.7rem, 3.1vw, 2.5rem);
  --t-h2: clamp(1.36rem, 2.3vw, 1.95rem);
  --t-h3: clamp(1.02rem, 1.4vw, 1.18rem);
  --t-body: 1rem;
  --t-sm: .92rem;
  --t-xs: .8rem;

  --ease: cubic-bezier(.22, .61, .36, 1);

  /* 兼容旧变量名（部分内联样式引用） */
  --paper: #FFFFFF;
  --paper-2: #F5F7F8;
  --surface: #FFFFFF;
  --gold-soft: #D8BE8A;
  --gold-glow: #E0CB9E;
  --rose: #E4EFF0;
  --blue: #3E8C96;
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.78;
  color: var(--ink);
  background-color: var(--white);
  background-image:
    radial-gradient(circle at 82% -6%, rgba(62, 140, 150, .09), transparent 42vw),
    radial-gradient(circle at 6% 4%, rgba(62, 140, 150, .05), transparent 34vw);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 极淡经纬网格：营造实验室的秩序感，不影响文字可读性 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(46, 107, 117, .045) 1px, transparent 1px),
    linear-gradient(rgba(46, 107, 117, .035) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: linear-gradient(#00000070, #00000010 55%, transparent);
  mask-image: linear-gradient(#00000070, #00000010 55%, transparent);
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink-strong);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: .01em;
}
p { margin: 0; }
ul, ol { margin: 0; padding-left: 1.15em; }
li + li { margin-top: .5em; }

::selection { color: #fff; background: var(--teal); }

:focus-visible {
  outline: 3px solid rgba(62, 140, 150, .45);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -100px;
  z-index: 999;
  transform: translateX(-50%);
  padding: 10px 20px;
  color: #fff;
  background: var(--teal-dark);
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: 900px; }

.section { padding-block: clamp(52px, 7vw, 104px); }
.section--tight { padding-block: clamp(36px, 4.8vw, 64px); }

/* 深青绿区块 */
.section--ink {
  position: relative;
  color: rgba(255, 255, 255, .78);
  background:
    radial-gradient(circle at 80% 8%, rgba(62, 140, 150, .38), transparent 48%),
    linear-gradient(158deg, #1B4A52 0%, #164148 48%, #123338 100%);
  overflow: hidden;
}
.section--ink h1, .section--ink h2, .section--ink h3, .section--ink h4 { color: #FFFFFF; }
.section--ink .eyebrow { color: var(--teal-soft); }
.section--ink .lead { color: rgba(255, 255, 255, .72); }

/* 次要背景（浅灰） */
.section--paper2 { background: var(--gray); }

/* ---------- 4. 排版元件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .7em;
  margin-bottom: 1.05em;
  font-family: var(--font-sans);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--teal-deep);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--gold);   /* 少量点缀金：只为这条小横线 */
  opacity: .85;
}
.eyebrow__num {
  font-family: var(--font-serif);
  font-size: .95em;
  letter-spacing: .1em;
  color: var(--teal);
  opacity: .95;
}

.display { font-size: var(--t-hero); line-height: 1.16; letter-spacing: .005em; }
.h1 { font-size: var(--t-h1); }
.h2 { font-size: var(--t-h2); }
.h3 { font-size: var(--t-h3); }

.lead {
  margin-top: 1.1em;
  max-width: 62ch;
  font-size: clamp(1rem, 1.15vw, 1.06rem);
  color: var(--ink-3);
  line-height: 1.85;
}
.lead--wide { max-width: none; }

.prose > * + * { margin-top: 1em; }
.prose p { color: var(--ink-3); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose h3 { margin-top: 2em; }
.prose h3 + p { margin-top: .6em; }
.prose a { color: var(--teal-deep); text-decoration: underline; text-underline-offset: 3px; }

.serif { font-family: var(--font-serif); }
.text-gold { color: var(--gold-deep); }

.hairline {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

/* ---------- 5. 按钮 ---------- */
.btn {
  --btn-bg: linear-gradient(135deg, #4A9AA4 0%, #2C6B75 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  padding: .82em 1.7em;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: #FFFFFF;
  background: var(--btn-bg);
  border-radius: 4px;
  box-shadow: 0 10px 24px rgba(28, 74, 82, .20);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), filter .28s var(--ease);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(28, 74, 82, .26); filter: brightness(1.06); }
.btn:active { transform: translateY(0); }

.btn--ghost {
  color: var(--teal-deep);
  background: #FFFFFF;
  border: 1px solid var(--line);
  box-shadow: none;
}
.btn--ghost:hover {
  border-color: var(--teal);
  color: var(--teal-deep);
  background: var(--teal-50);
  box-shadow: var(--shadow-sm);
  filter: none;
}

.section--ink .btn {
  background: #FFFFFF;
  color: var(--teal-dark);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .18);
}
.section--ink .btn:hover { filter: none; background: var(--teal-50); }
.section--ink .btn--ghost {
  color: #FFFFFF;
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .28);
}
.section--ink .btn--ghost:hover { background: rgba(255, 255, 255, .16); border-color: var(--teal-soft); }

.btn--sm { padding: .6em 1.25em; font-size: .86rem; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .45em;
  font-size: .92rem;
  font-weight: 600;
  color: var(--teal-deep);
  border-bottom: 1px solid transparent;
  transition: gap .25s var(--ease), border-color .25s var(--ease);
}
.link-arrow::after { content: "→"; font-family: var(--font-serif); transition: transform .25s var(--ease); }
.link-arrow:hover { border-color: currentColor; }
.link-arrow:hover::after { transform: translateX(3px); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2em; }

/* ---------- 6. 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .86);
  border-bottom: 1px solid transparent;
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .97);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(24, 56, 61, .06);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand__mark { width: auto; height: 34px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--ink-strong);
}
.brand__tag {
  font-size: .6rem;
  letter-spacing: .18em;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: clamp(10px, 1.5vw, 22px); }
.nav__link {
  position: relative;
  padding: 6px 2px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink-2);
  white-space: nowrap;
  transition: color .22s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__link:hover { color: var(--teal-deep); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--teal-deep); font-weight: 600; }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.header__cta { display: inline-flex; }
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 4px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: #FFFFFF;
}
.nav-toggle span { display: block; width: 17px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- 7. 首屏 Hero ---------- */
.hero { position: relative; padding-block: clamp(40px, 5.6vw, 82px) clamp(44px, 5.6vw, 92px); overflow: hidden; }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(28px, 4.6vw, 68px);
  align-items: center;
}
.hero__title { margin-top: .1em; }
.hero__title em {
  display: block;
  font-style: normal;
  font-family: var(--font-serif);
  font-size: .42em;
  letter-spacing: .28em;
  color: var(--teal);
  margin-bottom: .55em;
  text-transform: uppercase;
}
.hero__lead { margin-top: 1.35em; max-width: 46ch; font-size: 1.01rem; color: var(--ink-3); }
.hero__meta { margin-top: 1.9em; display: flex; flex-wrap: wrap; gap: 10px 24px; font-size: .84rem; color: var(--muted); }
.hero__meta span { display: inline-flex; align-items: center; gap: .5em; }
.hero__meta span::before { content: "◆"; font-size: .5em; color: var(--gold); }

/* 首屏品牌排版卡（暂代形象图，后续换成正式品牌图） */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .85em;
  padding: clamp(24px, 4vw, 44px);
  text-align: center;
  border: 1px solid var(--teal-100);
  background:
    radial-gradient(circle at 50% 14%, #FFFFFF, transparent 62%),
    linear-gradient(165deg, var(--teal-50), var(--teal-100));
  box-shadow: var(--shadow-lg);
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 15px;
  border: 1px solid rgba(62, 140, 150, .2);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}
/* 注意：.hero-stack__main > img 会把子图拉满，这里用更高优先级覆盖回来 */
.hero-visual > .hero-visual__mark {
  width: auto;
  height: clamp(56px, 8vw, 78px);
  flex: none;
  object-fit: contain;
  opacity: .92;
}
.hero-visual__name {
  font-family: var(--font-sans);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--ink-strong);
  text-indent: .3em;
}
.hero-visual__desc {
  max-width: 16ch;
  font-size: .82rem;
  line-height: 1.85;
  color: var(--ink-3);
}
.hero-visual__tag {
  margin-top: .4em;
  padding-top: .8em;
  width: 76%;
  border-top: 1px solid rgba(62, 140, 150, .26);
  font-size: .71rem;
  letter-spacing: .22em;
  color: var(--teal-deep);
}

/* 王炸产品实拍图变体（有正式产品图时用这个） */
.hero-visual--shot {
  display: block;
  padding: 0;
  border: 0;
  background: var(--teal-50);
}
.hero-visual--shot::after { display: none; }
.hero-visual__label {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 2;
  padding: 52px 18px 17px;
  font-size: .77rem;
  letter-spacing: .14em;
  text-align: center;
  color: #fff;
  background: linear-gradient(transparent, rgba(18, 51, 56, .76));
  pointer-events: none;
}

/* Hero 媒体拼贴 */
.hero__media { position: relative; }
.hero-stack {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .8fr);
  grid-template-rows: auto auto;
  gap: 12px;
}
.hero-stack__main {
  grid-row: span 2;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 3 / 4;
}
.hero-stack__main > img { width: 100%; height: 100%; object-fit: cover; }
.hero-stack__sub {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
}
.hero-stack__sub > img { width: 100%; height: 100%; object-fit: cover; }
.hero-stack__badge {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: .2em;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--teal-100);
  background: linear-gradient(150deg, #FFFFFF, var(--teal-50));
  box-shadow: var(--shadow-sm);
}
.hero-stack__badge b { font-family: var(--font-serif); font-size: 1.7rem; line-height: 1; color: var(--teal-deep); }
.hero-stack__badge span { font-size: .76rem; letter-spacing: .1em; color: var(--muted); }

.hero__definition {
  margin-top: 20px;
  padding: 16px 20px;
  border-left: 3px solid var(--teal);
  background: var(--teal-50);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--ink-3);
}
.hero__definition b { color: var(--ink); }

/* ---------- 8. 数据带 ---------- */
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(32px, 4.4vw, 58px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat {
  padding: 22px clamp(14px, 2vw, 26px);
  background: var(--white);
  text-align: left;
}
.stat__num {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.65rem, 3vw, 2.3rem);
  line-height: 1.05;
  color: var(--teal-deep);
}
.stat__num small { font-size: .46em; letter-spacing: .06em; margin-left: .2em; }
.stat__label { display: block; margin-top: .45em; font-size: .82rem; color: var(--ink-3); letter-spacing: .03em; }

/* ---------- 9. 区块标题 ---------- */
.section-head { max-width: 66ch; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow::before { display: none; }
.section-head--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(18px, 4vw, 56px);
  align-items: end;
  max-width: none;
}
.section-head--split .lead { margin-top: 0; }

/* ---------- 10. 卡片 ---------- */
.grid { display: grid; gap: clamp(14px, 2vw, 24px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .34s var(--ease), box-shadow .34s var(--ease), border-color .34s var(--ease);
}
.card:hover { transform: translateY(-3px); border-color: var(--teal-soft); box-shadow: var(--shadow-md); }
.card__num {
  font-family: var(--font-serif);
  font-size: .84rem;
  letter-spacing: .16em;
  color: var(--teal-deep);
}
.card__title { margin-top: .5em; font-size: var(--t-h3); }
.card__text { margin-top: .7em; font-size: .92rem; color: var(--ink-3); }
.card__foot { margin-top: auto; padding-top: 1.3em; }

.card--flat { background: transparent; box-shadow: none; border-color: transparent; }
.card--flat:hover { transform: none; box-shadow: none; border-color: transparent; }

/* 产品卡 */
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .34s var(--ease), box-shadow .34s var(--ease), border-color .34s var(--ease);
}
.product-card:hover { transform: translateY(-4px); border-color: var(--teal-soft); box-shadow: var(--shadow-md); }
.product-card__media { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: var(--gray); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.product-card:hover .product-card__media img { transform: scale(1.04); }
.product-card__body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: .32em; flex: 1; }
.product-card__brand {
  font-size: .69rem;
  letter-spacing: .16em;
  color: var(--teal-deep);
}
.product-card__name { font-size: 1rem; font-weight: 600; color: var(--ink-strong); letter-spacing: .01em; }
.product-card__desc { font-size: .86rem; color: var(--ink-3); line-height: 1.7; }
.product-card__role {
  align-self: flex-start;
  margin-top: .35em;
  padding: .18em .68em;
  font-size: .71rem;
  letter-spacing: .06em;
  color: var(--teal-deep);
  background: var(--teal-100);
  border-radius: 3px;
}

/* 产品图占位：产品实拍图未到位时用排版卡代替，不虚构、不外借别家产品图 */
.product-card__ph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 22px;
  font-family: var(--font-serif);
  font-size: .97rem;
  letter-spacing: .14em;
  line-height: 1.75;
  text-align: center;
  color: var(--ink-strong);
  background:
    radial-gradient(circle at 26% 16%, #FFFFFF, transparent 64%),
    linear-gradient(152deg, var(--teal-50), var(--teal-100));
}
.product-card__ph::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(62, 140, 150, .22);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}

/* 产品详情页的大幅占位卡 */
.media-ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .7em;
  padding: clamp(20px, 3vw, 36px);
  text-align: center;
  background:
    radial-gradient(circle at 26% 16%, #FFFFFF, transparent 64%),
    linear-gradient(152deg, var(--teal-50), var(--teal-100));
}
.media-ph::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(62, 140, 150, .22);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}
.media-ph__label {
  font-size: .7rem;
  letter-spacing: .22em;
  color: var(--teal-deep);
}
.media-ph__name {
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 1.6vw, 1.28rem);
  letter-spacing: .1em;
  line-height: 1.55;
  color: var(--ink-strong);
}

.badge-a {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  padding: .24em .68em;
  font-size: .69rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: #FFFFFF;
  background: linear-gradient(135deg, #3E8C96, #2C6B75);
  border-radius: 3px;
  box-shadow: 0 4px 12px rgba(28, 74, 82, .28);
}

/* 品牌卡（子品牌） */
.brand-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1em;
  padding: clamp(24px, 3vw, 38px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.brand-card::after {
  content: "";
  position: absolute;
  right: -70px; top: -70px;
  width: 230px; height: 230px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 140, 150, .12), transparent 68%);
  pointer-events: none;
}
.brand-card__head {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 18px);
}
.brand-card__head > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .35em;
}
.brand-card__logo { height: 52px; width: auto; flex: none; }
.brand-card__head .brand-card__title { font-size: 1.14rem; letter-spacing: .1em; }
.brand-card__mark {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--ink-strong);
}
.brand-card__mark::before {
  content: "";
  width: 20px; height: 20px;
  border: 1.5px solid var(--teal);
  border-radius: 50%;
  background: radial-gradient(circle, var(--teal-100), transparent 66%);
}
.brand-card__label {
  display: inline-flex;
  align-self: flex-start;
  padding: .18em .78em;
  font-size: .71rem;
  letter-spacing: .14em;
  color: var(--teal-deep);
  border: 1px solid var(--gold);
  border-radius: 3px;
  background: #FFFFFF;
}
.brand-card__title { font-size: var(--t-h3); }
.brand-card__text { font-size: .92rem; color: var(--ink-3); }
.brand-card__list { margin-top: .2em; font-size: .87rem; color: var(--ink-3); }
.brand-card__list li::marker { color: var(--teal-soft); }

/* ---------- 11. 图片带 / 画廊 ---------- */
.media-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(10px, 1.3vw, 16px);
}
.media-band__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  aspect-ratio: 3 / 4;
}
.media-band__item:nth-child(even) { transform: translateY(16px); }
.media-band__item img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.media-band__item:hover img { transform: scale(1.05); }

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(176px, 1fr));
  gap: clamp(10px, 1.2vw, 16px);
}
.gallery__item {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--gray);
  box-shadow: var(--shadow-sm);
}
.gallery__item img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1 / 1; transition: transform .7s var(--ease); }
.gallery__item:hover img { transform: scale(1.05); }
.gallery__cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 24px 12px 10px;
  font-size: .74rem;
  letter-spacing: .05em;
  text-align: left;
  color: #FFFFFF;
  background: linear-gradient(transparent, rgba(18, 51, 56, .78));
}

/* 单图大卡 */
.figure-card {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: var(--gray);
}
.figure-card img { width: 100%; height: 100%; object-fit: cover; }
.figure-card figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 40px 18px 14px;
  font-size: .78rem;
  color: rgba(255, 255, 255, .92);
  background: linear-gradient(transparent, rgba(18, 51, 56, .70));
}

/* ---------- 12. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
table.spec-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: .9rem;
}
.spec-table caption {
  padding: 14px 20px 0;
  font-size: .8rem;
  text-align: left;
  color: var(--muted);
}
.spec-table th, .spec-table td {
  padding: 13px 20px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}
.spec-table thead th {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: #FFFFFF;
  background: var(--teal-dark);
  white-space: nowrap;
}
.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody th { font-weight: 600; color: var(--ink-strong); white-space: nowrap; width: 26%; background: var(--teal-50); }
.spec-table td { color: var(--ink-3); }
.spec-table tbody tr:hover td { background: var(--teal-50); }
.spec-table .num { font-family: var(--font-serif); color: var(--teal); }

/* 定义列表（产品页规格） */
dl.spec-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line-soft);
}
.spec-list > div {
  display: grid;
  grid-template-columns: 8em minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: .89rem;
}
.spec-list dt { color: var(--muted); font-size: .83rem; letter-spacing: .03em; padding-top: .12em; }
.spec-list dd { margin: 0; color: var(--ink-2); }

/* ---------- 13. 折叠问答 ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion details {
  border-bottom: 1px solid var(--line);
  transition: background .3s var(--ease);
}
.accordion details[open] { background: var(--teal-50); }
.accordion summary {
  display: flex;
  align-items: flex-start;
  gap: 1em;
  padding: 18px 6px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-strong);
  transition: color .24s var(--ease);
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--teal);
  transition: transform .3s var(--ease);
}
.accordion details[open] summary::after { content: "−"; }
.accordion summary:hover { color: var(--teal-deep); }
.accordion summary .q-num {
  flex: none;
  width: 2.2em;
  font-family: var(--font-serif);
  font-size: .85rem;
  color: var(--teal);
  padding-top: .2em;
  opacity: .85;
}
.accordion__body { padding: 0 6px 20px 3.2em; font-size: .93rem; color: var(--ink-3); line-height: 1.85; }
.accordion__body p + p { margin-top: .7em; }
.accordion__body a { color: var(--teal-deep); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 14. 流程条 ---------- */
.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0;
  padding: 0;
  list-style: none;
}
.steps li {
  counter-increment: step;
  position: relative;
  margin: 0;
  padding: 24px 20px 22px;
  background: var(--white);
  font-size: .9rem;
  color: var(--ink-3);
}
.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: .6em;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--teal-soft);
}
.steps li b { display: block; margin-bottom: .25em; color: var(--ink-strong); font-size: .96rem; }
.section--ink .steps li { background: rgba(255, 255, 255, .06); color: rgba(255, 255, 255, .76); }
.section--ink .steps li b { color: #FFFFFF; }
.section--ink .steps { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .14); }
.section--ink .steps li::before { color: var(--teal-soft); }

/* ---------- 15. 强调条 / 提示 ---------- */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--teal-100);
  border-left: 3px solid var(--teal);
  background: var(--teal-50);
  font-size: .91rem;
  color: var(--ink-2);
}
.callout::before {
  content: "◆";
  flex: none;
  font-size: .62em;
  color: var(--gold);   /* 少量点缀金 */
  padding-top: .55em;
}
.callout strong { color: var(--ink-strong); }
.note { font-size: .81rem; color: var(--muted); line-height: 1.8; }
.note a { color: var(--teal-deep); }
.note--box {
  padding: 15px 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--gray);
}

/* ---------- 16. CTA 区块 ---------- */
.cta-band {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  gap: clamp(22px, 4vw, 52px);
  align-items: center;
  padding: clamp(30px, 4.2vw, 56px);
  border-radius: var(--radius-lg);
  color: rgba(255, 255, 255, .8);
  background:
    radial-gradient(circle at 84% 14%, rgba(62, 140, 150, .45), transparent 54%),
    linear-gradient(150deg, #1B4A52 0%, #164148 56%, #123338 100%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.cta-band h2 { color: #FFFFFF; }
.cta-band .lead { color: rgba(255, 255, 255, .74); }
.cta-band .btn {
  background: #FFFFFF;
  color: var(--teal-dark);
}
.cta-band .btn:hover { background: var(--teal-50); filter: none; }
.cta-band .btn--ghost {
  color: #FFFFFF;
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .3);
  box-shadow: none;
}
.cta-band .btn--ghost:hover { background: rgba(255, 255, 255, .16); border-color: var(--teal-soft); }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }

/* ---------- 17. 页脚 ---------- */
.site-footer {
  margin-top: clamp(40px, 5vw, 72px);
  padding-block: clamp(38px, 4.6vw, 64px) 24px;
  color: rgba(255, 255, 255, .66);
  background:
    radial-gradient(circle at 10% 0%, rgba(62, 140, 150, .22), transparent 44%),
    linear-gradient(180deg, #14373D, #0E2A2F);
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr)) minmax(0, 1.1fr);
  gap: clamp(22px, 4vw, 46px);
}
.footer__brand { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; max-width: 34ch; }
/* 注意：纵向 flex 容器默认 align-items: stretch 会把宽度拉满，
   这里的 logo 必须锁住自身尺寸，否则会被横向拉伸变形 */
.footer__logo { height: 34px; width: auto; flex: none; align-self: flex-start; }
.footer__desc { font-size: .87rem; line-height: 1.8; color: rgba(255, 255, 255, .6); }
.footer__title {
  margin-bottom: .85em;
  font-size: .77rem;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--teal-soft);
}
.footer__list { list-style: none; margin: 0; padding: 0; font-size: .89rem; }
.footer__list li { margin-top: .5em; }
.footer__list a { color: rgba(255, 255, 255, .68); transition: color .22s var(--ease); }
.footer__list a:hover { color: #FFFFFF; }
.footer__contact { font-size: .89rem; line-height: 1.9; }
.footer__contact b { display: block; color: #FFFFFF; font-weight: 600; letter-spacing: .03em; }
.footer__contact a { color: rgba(255, 255, 255, .82); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(26px, 3.6vw, 48px);
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: .77rem;
  color: rgba(255, 255, 255, .46);
}
.footer__bottom a { color: rgba(255, 255, 255, .6); }
.footer__bottom a:hover { color: #FFFFFF; }

/* ---------- 18. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5em;
  align-items: center;
  font-size: .79rem;
  color: var(--muted);
  padding-block: 16px 0;
}
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--teal-deep); }
.breadcrumb li + li::before { content: "/"; margin-right: .5em; color: var(--line); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .2em; list-style: none; margin: 0; padding: 0; }
.breadcrumb li { margin: 0; }

/* ---------- 19. 页面头部 ---------- */
.page-head { padding-block: clamp(26px, 3.6vw, 52px) clamp(22px, 3vw, 38px); }
.page-head__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: clamp(22px, 4vw, 56px);
  align-items: end;
}
.page-head figure { margin: 0; }

/* ---------- 20. 产品筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
}
.chip {
  padding: .45em 1.05em;
  font-size: .85rem;
  font-weight: 500;
  color: var(--ink-3);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: all .24s var(--ease);
}
.chip:hover { border-color: var(--teal); color: var(--teal-deep); }
.chip[aria-pressed="true"] {
  color: #FFFFFF;
  background: var(--teal-deep);
  border-color: var(--teal-deep);
  box-shadow: 0 6px 16px rgba(28, 74, 82, .20);
}
.is-hidden { display: none !important; }

/* ---------- 21. 侧栏布局 ---------- */
.with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(22px, 3.4vw, 48px);
  align-items: start;
}
.aside-card {
  position: sticky;
  top: 96px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.aside-card + .aside-card { margin-top: 16px; }
.aside-card h3 { font-size: .94rem; letter-spacing: .05em; }
.aside-card p { margin-top: .55em; font-size: .85rem; color: var(--ink-3); }
.aside-card .btn { width: 100%; margin-top: 1.1em; }
.aside-card .note a { color: var(--teal-deep); }

/* ---------- 22. 二维码组 ---------- */
.qr-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); gap: clamp(12px, 1.8vw, 20px); }
.qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .7em;
  margin: 0;
  padding: 18px 14px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.qr-card img { width: 100%; max-width: 148px; height: auto; border-radius: var(--radius-sm); }
.qr-card b { font-size: .91rem; color: var(--ink-strong); }
.qr-card span { font-size: .77rem; color: var(--muted); line-height: 1.6; }

/* ---------- 23. 联系方式列表 ---------- */
.contact-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.contact-list li {
  display: grid;
  grid-template-columns: 7em minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: .92rem;
}
.contact-list .k { font-size: .81rem; letter-spacing: .06em; color: var(--muted); padding-top: .14em; }
.contact-list .v { color: var(--ink-2); }
.contact-list .v a { color: var(--teal-deep); font-weight: 600; }
.contact-list .v a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 24. 表单 ---------- */
.form { display: grid; gap: 14px; }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field { display: flex; flex-direction: column; gap: .42em; }
.field label { font-size: .81rem; letter-spacing: .05em; color: var(--ink-3); }
.field input, .field textarea, .field select {
  width: 100%;
  padding: .78em 1em;
  font: inherit;
  font-size: .92rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(62, 140, 150, .16);
  outline: none;
}
.field textarea { min-height: 108px; resize: vertical; }
.form__hint { font-size: .77rem; color: var(--muted); }
.form__hint a { color: var(--teal-deep); font-weight: 600; }
.form__ok {
  margin: 0;
  padding: 13px 16px;
  font-size: .87rem;
  color: var(--teal-deep);
  background: var(--teal-100);
  border: 1px solid var(--teal-soft);
  border-radius: var(--radius);
}
.form__ok[hidden] { display: none; }

/* ---------- 25. 进入动画（无 JS 时全部可见） ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .75s var(--ease), transform .75s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- 26. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: minmax(0, 1fr); }
  .hero__media { order: -1; max-width: 560px; }
  .hero__lead { max-width: none; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .with-aside { grid-template-columns: minmax(0, 1fr); }
  .aside-card { position: static; }
  .page-head__grid { grid-template-columns: minmax(0, 1fr); }
  .section-head--split { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-band { grid-template-columns: minmax(0, 1fr); }
  .cta-band__actions { justify-content: flex-start; }
  .media-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .media-band__item:nth-child(even) { transform: none; }
}

@media (max-width: 880px) {
  .nav, .header__cta { display: none; }
  .nav-toggle { display: flex; }
  .site-header.is-open .nav {
    display: flex;
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 20px;
    background: #FFFFFF;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }
  .site-header.is-open .nav__link { padding: .8em 0; border-bottom: 1px solid var(--line-soft); }
  .site-header.is-open .nav__link::after { display: none; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form__row { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: .96rem; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .hero-stack { grid-template-columns: minmax(0, 1fr); }
  .hero-stack__main { aspect-ratio: 4 / 5; }
  .hero-stack__sub { display: none; }
  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .spec-list > div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .contact-list li { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .accordion__body { padding-left: 0; }
  .media-band { grid-template-columns: minmax(0, 1fr); }
  .brand__mark { height: 30px; }
  .brand__name { font-size: .98rem; letter-spacing: .14em; }
}

/* ---------- 技术服务 / 检测项目清单 ---------- */
.service-list {
  counter-reset: svc;
  margin: 1.1em 0 0;
  padding: 0;
  list-style: none;
}
.service-list li {
  position: relative;
  margin: 0;
  padding: .52em 0 .52em 2.6em;
  border-bottom: 1px solid var(--line-soft);
  font-size: .9rem;
  line-height: 1.65;
  color: var(--ink-3);
}
.service-list li:last-child { border-bottom: 0; }
.service-list li::before {
  counter-increment: svc;
  content: counter(svc, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .6em;
  font-family: var(--font-serif);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--teal);
}

/* ---------- 专家团队 ---------- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: clamp(14px, 1.8vw, 22px);
  align-items: start;
}
.expert-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.expert-card:hover { border-color: var(--teal-soft); box-shadow: var(--shadow-md); }
.expert-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: .85em;
  border-bottom: 1px solid var(--line-soft);
}
.expert-card__avatar {
  flex: none;
  width: 52px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--line-soft);
  background: var(--gray);
}
.expert-card__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .35em;
}
.expert-card__name {
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink-strong);
}
.expert-card__title {
  padding: .18em .68em;
  font-size: .71rem;
  letter-spacing: .08em;
  color: var(--teal-deep);
  background: var(--teal-100);
  border-radius: 3px;
}
.expert-card__body {
  margin-top: .9em;
  font-size: .855rem;
  line-height: 1.85;
  color: var(--ink-3);
}
.expert-card__body b { color: var(--ink-2); font-weight: 600; }

/* ---------- 战略合作：标识带 + 分组名录 ---------- */
.partner-marquee {
  position: relative;
  margin-top: clamp(26px, 3.6vw, 44px);
  padding-block: clamp(18px, 2.4vw, 26px);
  background: #FFFFFF;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%);
}
.partner-track {
  display: flex;
  width: max-content;
  animation: partner-scroll 68s linear infinite;
}
.partner-marquee:hover .partner-track { animation-play-state: paused; }
.partner-set {
  display: flex;
  align-items: center;
  gap: clamp(34px, 4.6vw, 76px);
  padding-right: clamp(34px, 4.6vw, 76px);
}
.partner-set img {
  flex: none;
  height: 56px;
  width: auto;
  object-fit: contain;
  opacity: .92;
  transition: opacity .35s var(--ease-out), transform .35s var(--ease-out);
}
.partner-set img:hover { opacity: 1; transform: scale(1.06); }

@keyframes partner-scroll {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

/* ---------- 合作名录 ---------- */
.partner-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3.6vw, 56px);
  margin-top: clamp(32px, 4.2vw, 58px);
}
.partner-group__head {
  display: flex;
  align-items: center;
  gap: .7em;
  padding-bottom: .85em;
  border-bottom: 1px solid var(--line);
}
.partner-group__letter {
  flex: none;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: .86rem;
  color: var(--teal-deep);
  background: var(--teal-100);
  border-radius: 50%;
}
.partner-group__title {
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--ink-strong);
}
.partner-group__head .partner-count { margin-left: auto; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 1.05em 0 0;
  padding: 0;
  list-style: none;
}
.tag-list li {
  margin: 0;
  padding: .42em .9em;
  font-size: .815rem;
  line-height: 1.55;
  color: var(--ink-2);
  background: #FFFFFF;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  transition: border-color .3s var(--ease-out), color .3s var(--ease-out),
    background .3s var(--ease-out), transform .3s var(--ease-out);
}
.tag-list li:hover {
  color: var(--teal-deep);
  border-color: var(--teal-soft);
  background: var(--teal-50);
  transform: translateY(-1px);
}
.partner-count {
  padding: .1em .5em;
  font-family: var(--font-serif);
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--teal-deep);
  background: var(--teal-100);
  border-radius: 3px;
  white-space: nowrap;
}

@media (max-width: 1080px) {
  .partner-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .partner-groups { grid-template-columns: minmax(0, 1fr); }
  .partner-set { gap: 28px; padding-right: 28px; }
  .partner-set img { height: 38px; }
  .tag-list li { font-size: .78rem; }
}
@media (prefers-reduced-motion: reduce) {
  .partner-track { animation: none; flex-wrap: wrap; }
  .partner-set { flex-wrap: wrap; row-gap: 18px; padding-block: 6px; }
  .partner-set + .partner-set { display: none; }
}

/* ---------- 产品系列导航 ---------- */
.series-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: clamp(10px, 1.4vw, 16px);
}
.series-nav__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .35em;
  padding: 18px 18px 16px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: border-color .35s var(--ease-out), box-shadow .35s var(--ease-out),
    transform .35s var(--ease-out);
}
.series-nav__item::after {
  content: "→";
  position: absolute;
  right: 14px;
  bottom: 14px;
  font-family: var(--font-serif);
  font-size: .9rem;
  color: var(--teal-soft);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .35s var(--ease-out), transform .35s var(--ease-out);
}
.series-nav__item:hover {
  border-color: var(--teal-soft);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.series-nav__item:hover::after { opacity: 1; transform: none; }
.series-nav__num {
  font-family: var(--font-serif);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--teal);
}
.series-nav__name {
  font-size: .98rem;
  font-weight: 600;
  color: var(--ink-strong);
  letter-spacing: .02em;
}
.series-nav__count { font-size: .78rem; color: var(--muted); }

/* 系列区块锚点定位补偿 */
.series-block { scroll-margin-top: 100px; }

@media (max-width: 640px) {
  .series-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-nav__item { padding: 14px 14px 12px; }
}
/* ---------- 空状态（内容待上线的板块） ---------- */
.empty-state {
  padding: clamp(40px, 6vw, 84px) clamp(22px, 4vw, 56px);
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.empty-state__badge {
  display: inline-block;
  margin-bottom: 1.1em;
  padding: .26em .9em;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--teal-deep);
  background: var(--teal-100);
  border-radius: 999px;
}
.empty-state h2 { font-size: var(--t-h2); }
.empty-state__desc {
  margin: 1em auto 0;
  max-width: 46ch;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--ink-3);
}
.empty-state .btn-row { justify-content: center; }

/* 二维码占位 */
.qr-card__ph {
  display: grid;
  place-items: center;
  width: 100%;
  max-width: 148px;
  aspect-ratio: 1 / 1;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  background: var(--gray);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--muted);
}

/* ---------- 25. 动效系统 ---------- */
/* 缓动曲线：出场用「快进慢停」，是全站高级感的主要来源 */
:root {
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-soft: cubic-bezier(.4, 0, .2, 1);
  --dur-s: .45s;
  --dur-m: .85s;
  --dur-l: 1.15s;
  /* 由 JS / 内联样式写入的运行时变量，给个默认值兜底 */
  --d: 0ms;
  --py: 0px;
}

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 200;
  width: 100%;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--teal) 0%, var(--teal-soft) 55%, var(--gold) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

/* 通用滚动揭示：默认上移淡入 */
.js .reveal,
.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  transition:
    opacity var(--dur-m) var(--ease-out),
    transform var(--dur-m) var(--ease-out);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}
.js [data-reveal="left"] { transform: translate3d(-34px, 0, 0); }
.js [data-reveal="right"] { transform: translate3d(34px, 0, 0); }
.js [data-reveal="scale"] { transform: scale(.94); }
.js [data-reveal="fade"] { transform: none; }

.js .reveal.is-in,
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* 首屏逐行掩膜揭示（纯 CSS 动画，不依赖 JS） */
.mask-line {
  display: block;
  overflow: hidden;
  padding-bottom: .14em;
  margin-bottom: -.14em;
}
.mask-line > span {
  display: block;
  animation: mask-up var(--dur-l) var(--ease-out) both;
  animation-delay: var(--d, 0ms);
}
@keyframes mask-up {
  from { transform: translate3d(0, 112%, 0); }
  to { transform: translate3d(0, 0, 0); }
}

/* 首屏元素上浮（同样纯 CSS） */
.fade-up-seq {
  animation: seq-up var(--dur-m) var(--ease-out) both;
  animation-delay: var(--d, 0ms);
}
@keyframes seq-up {
  from { opacity: 0; transform: translate3d(0, 22px, 0); }
  to { opacity: 1; transform: none; }
}

/* 图片缓慢放大入场 */
.img-in {
  animation: img-in var(--dur-l) var(--ease-out) both;
  animation-delay: var(--d, 0ms);
}
@keyframes img-in {
  from { opacity: 0; transform: scale(1.08); }
  to { opacity: 1; transform: none; }
}

/* 按钮：高光扫过 */
.btn {
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 28%, rgba(255, 255, 255, .38) 50%, transparent 72%);
  transform: translateX(-130%);
  transition: transform .9s var(--ease-out);
  pointer-events: none;
}
.btn:hover::after { transform: translateX(130%); }

/* 卡片悬停：抬升 + 顶部青色细线生长 */
.card,
.product-card,
.contact-item,
.brand-card {
  transition:
    transform .5s var(--ease-out),
    box-shadow .5s var(--ease-out),
    border-color .5s var(--ease-out);
}

/* 折叠面板展开动效（原生 details 无法过渡高度，这里做内容淡入 + 位移） */
.accordion details[open] > .accordion__body {
  animation: acc-open .5s var(--ease-out) both;
}
@keyframes acc-open {
  from { opacity: 0; transform: translate3d(0, -8px, 0); }
  to { opacity: 1; transform: none; }
}

/* 数字滚动：等宽数字避免跳动 */
.count-num { font-variant-numeric: tabular-nums; }

/* 视差容器（位移由 JS 写入 --py） */
[data-parallax] {
  transform: translate3d(0, var(--py, 0px), 0);
  will-change: transform;
}

/* ---------- 26. 页面 Banner（二级页头） ---------- */
.page-banner {
  position: relative;
  display: grid;
  align-items: center;
  min-height: clamp(300px, 44vh, 440px);
  overflow: hidden;
  isolation: isolate;
}
.page-banner__media {
  position: absolute;
  inset: -8% 0;
  z-index: -1;
}
.page-banner__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(112deg, rgba(18, 51, 56, .90) 0%, rgba(27, 74, 82, .74) 46%, rgba(27, 74, 82, .42) 100%),
    radial-gradient(circle at 82% 22%, rgba(62, 140, 150, .45), transparent 52%);
}
.page-banner__inner {
  position: relative;
  padding-block: clamp(40px, 6vw, 76px);
  color: #fff;
}
.page-banner .eyebrow {
  color: var(--teal-soft);
}
.page-banner .eyebrow::before { background: var(--gold); }
.page-banner h1 {
  color: #fff;
  font-size: clamp(1.9rem, 4.2vw, 3.2rem);
  letter-spacing: .06em;
}
.page-banner__en {
  margin-top: .9em;
  font-family: var(--font-serif);
  font-size: clamp(.82rem, 1.3vw, 1rem);
  letter-spacing: .4em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .62);
}
.page-banner__desc {
  margin-top: 1.4em;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, .76);
}

/* Banner 内的浅色面包屑 */
.breadcrumb--light { padding-block: 0 0; margin-bottom: 1.6em; color: rgba(255, 255, 255, .58); }
.breadcrumb--light a { color: rgba(255, 255, 255, .84); }
.breadcrumb--light a:hover { color: #fff; }
.breadcrumb--light li + li::before { color: rgba(255, 255, 255, .34); }

/* ---------- 27. 二级锚点菜单（吸顶 + 跟随指示条） ---------- */
.page-menu {
  position: sticky;
  top: 72px;
  z-index: 90;
  background: rgba(255, 255, 255, .9);
  border-bottom: 1px solid var(--line-soft);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
}
.page-menu__inner {
  position: relative;
  display: flex;
  gap: clamp(18px, 3vw, 44px);
  overflow-x: auto;
  scrollbar-width: none;
}
.page-menu__inner::-webkit-scrollbar { display: none; }
.page-menu__inner a {
  position: relative;
  flex: none;
  padding: 15px 2px;
  font-size: .92rem;
  color: var(--ink-3);
  white-space: nowrap;
  transition: color .3s var(--ease-soft);
}
.page-menu__inner a:hover { color: var(--teal-deep); }
.page-menu__inner a.is-active { color: var(--teal-deep); font-weight: 600; }
.page-menu__ind {
  position: absolute;
  left: 0; bottom: 0;
  height: 2px;
  width: 0;
  background: var(--teal);
  border-radius: 2px;
  transition: transform .55s var(--ease-out), width .55s var(--ease-out);
  will-change: transform, width;
}

/* 锚点定位补偿（吸顶导航 72px + 二级菜单约 52px） */
#contact-info, #contact-channel, #contact-form, #contact-verify { scroll-margin-top: 140px; }

/* ---------- 28. 联系信息卡网格 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(288px, 1fr));
  gap: clamp(14px, 1.8vw, 22px);
}
.contact-item {
  position: relative;
  padding: clamp(22px, 2.5vw, 30px);
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.contact-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--teal), var(--teal-deep));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .6s var(--ease-out);
}
.contact-item:hover { transform: translateY(-4px); border-color: var(--teal-soft); box-shadow: var(--shadow-md); }
.contact-item:hover::before { transform: scaleY(1); }
.contact-item__num {
  font-family: var(--font-serif);
  font-size: .8rem;
  letter-spacing: .2em;
  color: var(--teal);
}
.contact-item h3 {
  margin-top: .4em;
  font-size: 1.05rem;
  letter-spacing: .04em;
}
.contact-item__list { margin: .9em 0 0; display: grid; gap: .5em; }
.contact-item__list > div {
  display: grid;
  grid-template-columns: 4.8em minmax(0, 1fr);
  gap: 10px;
  font-size: .89rem;
  line-height: 1.7;
}
.contact-item__list dt { color: var(--muted); font-size: .81rem; }
.contact-item__list dd { margin: 0; color: var(--ink-2); word-break: break-word; }
.contact-item__list dd a { color: var(--teal-deep); font-weight: 600; }
.contact-item__list dd a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 29. 响应式补充 ---------- */
@media (max-width: 1080px) {
  .page-banner__media { inset: -4% 0; }
}

@media (max-width: 880px) {
  #contact-info, #contact-channel, #contact-form, #contact-verify { scroll-margin-top: 132px; }
}

@media (max-width: 640px) {
  .page-banner { min-height: 260px; }
  .page-menu__inner { gap: 18px; }
  .page-menu__inner a { padding: 13px 2px; font-size: .87rem; }
  .contact-item__list > div { grid-template-columns: minmax(0, 1fr); gap: 1px; }
}

/* 用户偏好减少动效：全部关掉 */
@media (prefers-reduced-motion: reduce) {
  .scroll-progress { display: none; }
  .mask-line > span,
  .fade-up-seq,
  .img-in { animation: none !important; }
  .js .reveal,
  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  [data-parallax] { transform: none !important; }
  .btn::after { display: none; }
  .accordion details[open] > .accordion__body { animation: none !important; }
}

/* ==========================================================================
   31. 移动端专项优化
   --------------------------------------------------------------------------
   针对手机（≤640px）重排，解决三件事：
     1. 首屏图在文字前、图太大 → 文字优先，图片缩小为横向比例
     2. 产品卡整列堆叠、单张占满屏 → 改为横向紧凑行（图左文右）
     3. iOS 上 background-attachment:fixed 卡顿/错层 → 关闭固定背景与网格遮罩
   ========================================================================== */

/* --- 3.1 触摸与防溢出（所有移动端） --- */
@media (max-width: 880px) {
  body {
    overflow-wrap: break-word;
    word-break: break-word;
    -webkit-tap-highlight-color: transparent;
    background-attachment: scroll;
  }
  body::before { display: none; }
  .btn { min-height: 44px; }
  .chip { min-height: 36px; }
}

@media (max-width: 640px) {
  /* --- 3.2 首屏：文字在前，图片在后且收小 --- */
  .hero { padding-block: 26px 38px; }
  .hero__grid { gap: 24px; }
  .hero__media { order: 0; max-width: none; }
  .hero-stack { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .hero-stack__main { aspect-ratio: 16 / 11; }
  .hero-stack__sub,
  .hero-stack__badge { display: none; }
  .hero__definition { margin-top: 14px; font-size: .86rem; padding: 13px 15px; }
  .hero__title em { font-size: .38em; letter-spacing: .16em; margin-bottom: .45em; }
  .hero__meta { margin-top: 1.3em; gap: 8px 16px; font-size: .8rem; }

  /* --- 3.3 标题与正文节奏 --- */
  h1, h2, h3, .display { letter-spacing: 0; }
  .lead { font-size: 1rem; line-height: 1.8; }
  .eyebrow { letter-spacing: .18em; margin-bottom: .9em; }

  /* --- 3.4 区块留白收紧 --- */
  .section { padding-block: 42px; }
  .section--tight { padding-block: 28px; }

  /* --- 3.5 产品卡：横向紧凑行 --- */
  .product-card {
    flex-direction: row;
    align-items: stretch;
    border-radius: var(--radius);
  }
  .product-card__media {
    width: 38%;
    flex: none;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius) 0 0 var(--radius);
  }
  .product-card__body {
    width: 62%;
    padding: 12px 14px;
    justify-content: center;
    gap: .28em;
  }
  .product-card__brand { font-size: .64rem; letter-spacing: .12em; }
  .product-card__name { font-size: .92rem; line-height: 1.45; }
  .product-card__desc { font-size: .78rem; line-height: 1.65; }
  .product-card__role { font-size: .68rem; margin-top: .2em; }
  .badge-a { top: 8px; left: 8px; padding: .18em .55em; font-size: .62rem; }
  .series-block .grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }

  /* --- 3.6 系列导航 --- */
  .series-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .series-nav__item { padding: 13px 12px 11px; }
  .series-nav__name { font-size: .88rem; }
  .series-nav__count { font-size: .72rem; }
  .series-nav__item::after { display: none; }

  /* --- 3.7 通用卡片 --- */
  .card { padding: 18px 16px; border-radius: var(--radius); }
  .card__title { font-size: 1rem; }
  .card__text { font-size: .87rem; }

  /* --- 3.8 专家卡 --- */
  .expert-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .expert-card { padding: 16px 16px 18px; }
  .expert-card__avatar { width: 44px; height: 54px; }
  .expert-card__name { font-size: .98rem; }
  .expert-card__body { font-size: .8rem; line-height: 1.75; margin-top: .7em; }

  /* --- 3.9 联系信息卡 --- */
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .contact-item { padding: 16px 16px 18px; }
  .contact-item h3 { font-size: .98rem; }

  /* --- 3.10 二维码并排 --- */
  .qr-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .qr-card { padding: 14px 10px; }
  .qr-card img { max-width: 108px; }
  .qr-card b { font-size: .84rem; }
  .qr-card span { font-size: .72rem; }
  .qr-card__ph { max-width: 108px; font-size: .7rem; }

  /* --- 3.11 战略合作 --- */
  .partner-marquee { padding-block: 14px; }
  .partner-set img { height: 26px; }
  .partner-groups { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .partner-group__head { padding-bottom: .6em; }
  .tag-list { gap: 6px; }
  .tag-list li { font-size: .76rem; padding: .36em .75em; }

  /* --- 3.12 数据带 --- */
  .stat { padding: 16px 12px; }
  .stat__num { font-size: 1.5rem; }
  .stat__label { font-size: .76rem; }

  /* --- 3.13 流程步骤 --- */
  .steps { grid-template-columns: minmax(0, 1fr); }
  .steps li { padding: 18px 16px; }

  /* --- 3.14 图片比例收编 --- */
  .media-band__item { aspect-ratio: 4 / 3; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .gallery__cap { padding: 18px 9px 8px; font-size: .68rem; }

  /* --- 3.15 页脚 --- */
  .footer__grid { gap: 24px; }
  .footer__brand { max-width: none; }
  .footer__logo { height: 30px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 6px; }

  /* --- 3.16 表格 --- */
  .table-wrap { -webkit-overflow-scrolling: touch; }
  .spec-table { font-size: .84rem; }
  .spec-table th, .spec-table td { padding: 10px 14px; }

  /* --- 3.17 CTA --- */
  .cta-band { padding: 24px 20px; border-radius: var(--radius); }
  .cta-band__actions { flex-direction: column; align-items: stretch; }
  .cta-band__actions .btn { width: 100%; }

  /* --- 3.18 折叠问答 --- */
  .accordion summary { font-size: .93rem; padding: 15px 2px; }
  .accordion__body { font-size: .88rem; padding-bottom: 16px; }

  /* --- 3.19 表单：16px 防 iOS 自动放大 --- */
  .field input, .field textarea, .field select { font-size: 16px; }
}

/* 超小屏（≤380px）再收一档 */
@media (max-width: 380px) {
  .product-card__media { width: 34%; }
  .product-card__body { width: 66%; padding: 10px 12px; }
  .product-card__name { font-size: .86rem; }
  .qr-card img { max-width: 92px; }
  .brand__tag { display: none; }
  .series-nav { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 30. 打印 ---------- */
@media print {
  body { background: #fff; }
  body::before, .site-header, .site-footer, .cta-band, .btn { display: none; }
  .card, .product-card { box-shadow: none; border-color: #ddd; }
  .js .reveal { opacity: 1; transform: none; }
  .section--ink, .cta-band { background: #fff !important; color: #292929 !important; }
  .section--ink h2, .cta-band h2 { color: #292929 !important; }
}