/* ============================================================
   感芯·明眸 GanXin MingMou — 3D AI Silicon
   子站样式：深空蓝 + 鎏金 + 青光 · 中英双语 · 响应式
   ============================================================ */
:root {
  --bg: #070B16;
  --bg2: #0B1120;
  --bg3: #0E1628;
  --line: rgba(148, 178, 255, 0.14);
  --on-dark: #EAF0FF;
  --on-dark-2: #A8B6D4;
  --on-dark-3: #7C8BAB;
  --cyan: #22D3C5;
  --gold: #E8B84B;
  --gold-2: #F5D488;
  --brand: #0E9AAE;
  --radius: 16px;
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-en: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--on-dark);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: rgba(34, 211, 197, 0.35); }

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.nav.is-solid {
  background: rgba(7, 11, 22, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.nav__inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.nav__brand { display: flex; align-items: center; gap: 11px; flex: none; }
.nav__logo { width: 42px; height: 42px; border-radius: 10px; box-shadow: 0 4px 18px rgba(0,0,0,.5); }
.nav__brandtext { display: grid; line-height: 1.2; }
.nav__brandtext strong { font-size: 17.5px; font-weight: 700; letter-spacing: .02em; }
.nav__brandtext small { font-size: 9.5px; letter-spacing: .34em; color: var(--gold); font-weight: 600; }
.nav__links { display: flex; gap: 26px; margin-left: auto; }
.nav__links a { font-size: 14px; color: var(--on-dark-2); transition: color .2s; position: relative; padding: 6px 0; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--cyan)); transition: width .25s; border-radius: 2px;
}
.nav__links a:hover { color: var(--on-dark); }
.nav__links a:hover::after { width: 100%; }
.nav__right { display: flex; align-items: center; gap: 12px; margin-left: 8px; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 2px; padding: 3px;
  background: rgba(255,255,255,.07); border: 1px solid var(--line); border-radius: 999px;
}
.lang-btn span { font-size: 12px; font-weight: 700; padding: 4px 11px; border-radius: 999px; color: var(--on-dark-3); transition: all .2s; }
html[lang="en"] .lang-btn__zh { color: var(--on-dark-3); background: transparent; }
html[lang="zh-CN"] .lang-btn__zh, html:not([lang="en"]) .lang-btn__zh { color: #06231F; background: var(--cyan); }
html[lang="en"] .lang-btn__en { color: #06231F; background: var(--cyan); }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.nav__burger span { width: 22px; height: 2px; background: var(--on-dark); border-radius: 2px; transition: all .25s; }
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- HERO ---------------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.hero__bg, .vision__bg { position: absolute; inset: 0; }
.hero__bg img, .vision__bg img { width: 100%; height: 100%; object-fit: cover; animation: kenburns 22s ease-in-out infinite alternate; }
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.07); } }
.hero__shade, .vision__shade {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(7,11,22,.94) 0%, rgba(7,11,22,.72) 42%, rgba(7,11,22,.28) 75%, rgba(7,11,22,.55) 100%),
              linear-gradient(0deg, var(--bg) 0%, rgba(7,11,22,0) 26%);
}
.hero__inner { position: relative; max-width: 1200px; margin: 0 auto; padding: 130px 24px 90px; width: 100%; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .18em; color: var(--gold-2);
  border: 1px solid rgba(232,184,75,.4); border-radius: 999px; padding: 7px 18px;
  background: rgba(232,184,75,.08);
}
.hero__title {
  margin-top: 26px; font-size: clamp(46px, 8.5vw, 92px); font-weight: 800; line-height: 1.08; letter-spacing: .01em;
  background: linear-gradient(105deg, #FFFFFF 30%, var(--gold-2) 60%, var(--gold) 85%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero__sub { margin-top: 16px; font-size: clamp(18px, 2.6vw, 25px); font-weight: 600; color: var(--cyan); letter-spacing: .3em; }
.hero__desc { margin-top: 22px; max-width: 640px; font-size: 16.5px; color: var(--on-dark-2); line-height: 1.95; }
.hero__cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 650; transition: all .25s; border: 1px solid transparent;
}
.btn--gold { background: linear-gradient(120deg, var(--gold), #D9A032); color: #241703; box-shadow: 0 10px 34px rgba(232,184,75,.3); }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(232,184,75,.42); }
.btn--ghost { border-color: rgba(34,211,197,.5); color: var(--cyan); }
.btn--ghost:hover { background: rgba(34,211,197,.1); transform: translateY(-2px); }
.hero__stats { margin-top: 62px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 860px; }
.stat {
  background: rgba(255,255,255,.045); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px 15px; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.stat b { font-size: clamp(26px, 3vw, 38px); font-weight: 800; color: var(--gold-2); font-family: var(--font-en); line-height: 1.1; }
.stat i { font-style: normal; font-size: 13px; color: var(--gold); margin-left: 4px; font-family: var(--font-en); }
.stat span { display: block; margin-top: 5px; font-size: 12.5px; color: var(--on-dark-2); letter-spacing: .04em; }

/* ---------------- 通用区块 ---------------- */
.sec { position: relative; padding: 110px 0; }
.sec--alt { background: var(--bg2); }
.sec__inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sec__kicker { font-size: 13px; letter-spacing: .3em; color: var(--cyan); font-weight: 700; text-transform: uppercase; }
.sec__title {
  margin-top: 18px; font-size: clamp(28px, 4.4vw, 46px); font-weight: 800; line-height: 1.28;
}
.sec__title br { display: block; }
.sec__lead { margin-top: 22px; max-width: 780px; color: var(--on-dark-2); font-size: 16.5px; line-height: 1.95; }
.footnote { margin-top: 22px; font-size: 12.5px; color: var(--on-dark-3); }

/* 卡片栅格 */
.cards3 { margin-top: 54px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards4 { margin-top: 54px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

/* 战略卡 */
.scard {
  background: linear-gradient(165deg, var(--bg3), var(--bg2));
  border: 1px solid var(--line); border-radius: 18px; padding: 34px 28px;
  transition: transform .3s, border-color .3s, box-shadow .3s; position: relative; overflow: hidden;
}
.scard::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  opacity: 0; transition: opacity .3s;
}
.scard:hover { transform: translateY(-6px); border-color: rgba(232,184,75,.4); box-shadow: 0 24px 60px rgba(0,0,0,.45); }
.scard:hover::before { opacity: 1; }
.scard__no { font-size: 30px; font-weight: 800; color: var(--gold); font-family: var(--font-en); }
.scard h3 { margin-top: 14px; font-size: 20px; font-weight: 700; }
.scard__from { margin-top: 16px; font-size: 13.5px; color: var(--on-dark-3); text-decoration: line-through; text-decoration-color: rgba(255,255,255,.25); text-decoration-thickness: 1px; }
.scard__to { margin-top: 10px; font-size: 14.5px; color: var(--on-dark); line-height: 1.8; }
.scard__gain { margin-top: 16px; font-size: 13px; color: var(--cyan); font-weight: 600; }

/* 分栏 */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.split__media { position: relative; }
.split__media img { border-radius: 20px; border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.split__media figcaption { margin-top: 14px; text-align: center; font-size: 13px; color: var(--on-dark-3); letter-spacing: .06em; }

/* 指标清单 */
.klist { margin-top: 30px; display: grid; gap: 16px; }
.klist li {
  display: grid; grid-template-columns: 130px 1fr; gap: 16px; align-items: baseline;
  padding: 15px 20px; background: rgba(255,255,255,.035); border: 1px solid var(--line); border-radius: 13px;
}
.klist b { font-size: 21px; color: var(--gold-2); font-family: var(--font-en); font-weight: 800; white-space: nowrap; }
.klist span { font-size: 14px; color: var(--on-dark-2); }

/* 产品卡 */
.pcard {
  background: linear-gradient(180deg, var(--bg3), var(--bg2));
  border: 1px solid var(--line); border-radius: 20px; overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s; display: flex; flex-direction: column;
}
.pcard:hover { transform: translateY(-7px); border-color: rgba(34,211,197,.4); box-shadow: 0 28px 70px rgba(0,0,0,.5); }
.pcard__imgwrap { aspect-ratio: 3 / 2; overflow: hidden; }
.pcard__imgwrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.pcard:hover .pcard__imgwrap img { transform: scale(1.06); }
.pcard__body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.pcard__tag { font-size: 11.5px; letter-spacing: .26em; color: var(--cyan); font-weight: 700; }
.pcard h3 { margin-top: 10px; font-size: 21px; font-weight: 750; }
.pcard__model { margin-top: 4px; font-size: 13px; color: var(--gold); font-family: var(--font-en); letter-spacing: .08em; font-weight: 600; }
.spec { margin-top: 18px; display: grid; gap: 10px; }
.spec li { font-size: 13.5px; color: var(--on-dark-2); padding-left: 16px; position: relative; line-height: 1.7; }
.spec li::before { content: "◆"; position: absolute; left: 0; top: 0; font-size: 9px; color: var(--gold); line-height: 2.6; }

/* 路线图 */
.roadmap { margin-top: 54px; display: grid; gap: 18px; position: relative; }
.rrow {
  display: grid; grid-template-columns: 190px 1fr; gap: 28px; align-items: start;
  background: linear-gradient(120deg, var(--bg3), rgba(14,22,40,.4));
  border: 1px solid var(--line); border-radius: 18px; padding: 28px 32px;
  transition: border-color .3s, transform .3s;
}
.rrow:hover { border-color: rgba(232,184,75,.42); transform: translateX(6px); }
.rrow__year {
  font-size: clamp(20px, 2.4vw, 27px); font-weight: 800; color: var(--gold-2);
  font-family: var(--font-en); letter-spacing: .02em; line-height: 1.25;
  border-right: 2px solid rgba(232,184,75,.3); padding-right: 22px; padding-top: 3px;
}
.rrow h3 { font-size: 18.5px; font-weight: 700; color: var(--on-dark); }
.rrow p { margin-top: 10px; font-size: 14.5px; color: var(--on-dark-2); line-height: 1.85; }

/* 健康技术清单 */
.tlist { margin-top: 28px; display: grid; gap: 12px; }
.tlist li {
  display: grid; grid-template-columns: 220px 1fr; gap: 14px; align-items: baseline;
  padding: 13px 18px; border: 1px solid var(--line); border-radius: 12px;
  background: rgba(255,255,255,.03); transition: border-color .25s, background .25s;
}
.tlist li:hover { border-color: rgba(34,211,197,.4); background: rgba(34,211,197,.05); }
.tlist b { font-size: 14.5px; color: var(--on-dark); font-weight: 700; }
.tlist span { font-size: 13.5px; color: var(--on-dark-2); }

/* 生态卡 */
.ecard {
  background: var(--bg3); border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.ecard:hover { transform: translateY(-6px); border-color: rgba(34,211,197,.4); box-shadow: 0 24px 60px rgba(0,0,0,.45); }
.ecard__imgwrap { aspect-ratio: 3 / 2; overflow: hidden; }
.ecard__imgwrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.ecard:hover .ecard__imgwrap img { transform: scale(1.06); }
.ecard__role { margin: 20px 22px 0; font-size: 11.5px; letter-spacing: .26em; color: var(--gold); font-weight: 700; }
.ecard h3 { margin: 8px 22px 0; font-size: 17.5px; font-weight: 700; line-height: 1.45; }
.ecard p:last-child { margin: 10px 22px 24px; font-size: 13.5px; color: var(--on-dark-2); line-height: 1.8; }

/* 愿景 */
.vision { position: relative; padding: 150px 0; overflow: hidden; }
.vision__shade { background: linear-gradient(0deg, var(--bg) 0%, rgba(7,11,22,.78) 45%, rgba(7,11,22,.62) 100%); }
.vision__inner { position: relative; max-width: 920px; margin: 0 auto; padding: 0 24px; text-align: center; }
.vision__kicker { font-size: 12px; letter-spacing: .4em; color: var(--cyan); font-weight: 700; }
.vision blockquote {
  margin-top: 28px; font-size: clamp(21px, 3.2vw, 33px); font-weight: 700; line-height: 1.75;
  background: linear-gradient(100deg, #FFFFFF 40%, var(--gold-2) 75%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.vision__sub { margin-top: 26px; font-size: 15.5px; letter-spacing: .32em; color: var(--on-dark-2); }

/* ---------------- 页脚 ---------------- */
.foot { background: #060910; border-top: 1px solid var(--line); }
.foot__inner {
  max-width: 1200px; margin: 0 auto; padding: 72px 24px 40px;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px;
}
.foot__logo { display: inline-flex; align-items: center; gap: 12px; }
.foot__logo img { width: 46px; height: 46px; border-radius: 11px; }
.foot__logo span { display: grid; line-height: 1.3; }
.foot__logo strong { font-size: 18px; font-weight: 750; }
.foot__logo small { font-size: 9.5px; letter-spacing: .3em; color: var(--gold); }
.foot__brand > p { margin-top: 20px; font-size: 13.5px; color: var(--on-dark-2); line-height: 1.9; max-width: 400px; }
.foot__sites { margin-top: 26px; display: grid; gap: 10px; }
.foot__sites a {
  display: inline-flex; align-items: center; gap: 11px; max-width: 340px;
  padding: 10px 14px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.04);
  transition: all .25s;
}
.foot__sites a:hover { border-color: rgba(232,184,75,.5); background: rgba(255,255,255,.08); transform: translateX(4px); }
.foot__sites img { width: 34px; height: 34px; border-radius: 8px; flex: none; }
.foot__sites b { display: block; font-size: 13.5px; color: var(--on-dark); font-weight: 650; }
.foot__sites small { display: block; font-size: 11px; color: var(--on-dark-3); }
.foot__col h5 { font-size: 12.5px; letter-spacing: .2em; color: #fff; font-weight: 700; text-transform: uppercase; }
.foot__col ul { margin-top: 20px; display: grid; gap: 12px; }
.foot__col a { font-size: 13.5px; color: var(--on-dark-2); transition: color .2s; }
.foot__col a:hover { color: var(--gold-2); }
.foot__bar { border-top: 1px solid rgba(148,178,255,.08); }
.foot__bar p { max-width: 1200px; margin: 0 auto; padding: 20px 24px; font-size: 12px; color: var(--on-dark-3); }
.foot__bar a { color: var(--on-dark-2); margin-left: 10px; transition: color .2s; }
.foot__bar a:hover { color: var(--gold-2); }
.foot__col li.foot__txt { font-size: 13.5px; color: var(--on-dark-2); line-height: 1.7; max-width: 30em; }

/* ---------------- 入场动画 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.65,.3,1), transform .8s cubic-bezier(.2,.65,.3,1); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__bg img { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .cards4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split__media { order: -1; }
  .nav__links { gap: 18px; }
  .foot__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .nav__links {
    position: fixed; top: 70px; left: 16px; right: 16px; flex-direction: column; gap: 4px;
    background: rgba(9,14,26,.97); border: 1px solid var(--line); border-radius: 16px;
    padding: 14px; display: none; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 30px 80px rgba(0,0,0,.6);
  }
  .nav__links a { padding: 12px 14px; border-radius: 10px; font-size: 15px; }
  .nav__links a:hover { background: rgba(255,255,255,.06); }
  .nav__links a::after { display: none; }
  .nav.is-open .nav__links { display: flex; }
  .nav__burger { display: flex; }
  .sec { padding: 78px 0; }
  .cards3 { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); margin-top: 44px; }
  .rrow { grid-template-columns: 1fr; gap: 12px; padding: 24px; }
  .rrow__year { border-right: none; border-bottom: 2px solid rgba(232,184,75,.3); padding: 0 0 12px; }
  .rrow:hover { transform: none; }
  .foot__inner { grid-template-columns: 1fr 1fr; gap: 36px; }
  .foot__brand { grid-column: 1 / -1; }
  .klist li { grid-template-columns: 1fr; gap: 4px; }
  .tlist li { grid-template-columns: 1fr; gap: 4px; }
  .hero__inner { padding: 120px 20px 70px; }
}
@media (max-width: 480px) {
  .cards4 { grid-template-columns: 1fr; }
  .hero__cta .btn { width: 100%; justify-content: center; }
  .foot__inner { grid-template-columns: 1fr; }
  .hero__sub { letter-spacing: .18em; }
  .stat { padding: 14px 16px 12px; }
}