/* ============================================================
   GRT Composites — 固瑞泰复合材料
   设计系统: 白色洁净 / 科技实验室美学 / 分子结构 / 玻璃拟态
   点缀色: 发光青色 #00E0FF · 活力红 #FF2D55
   ============================================================ */

:root {
  /* 色彩系统 */
  --bg: #ffffff;
  --bg-soft: #f4f7fa;
  --bg-grid: #f0f5f8;
  --ink: #0b1b2b;
  --ink-2: #22344a;
  --ink-3: #5a6c82;
  --ink-4: #8b9bb0;
  --line: rgba(11, 27, 43, 0.08);
  --line-2: rgba(11, 27, 43, 0.14);

  --cyan: #00c8e8;
  --cyan-bright: #00e0ff;
  --cyan-deep: #0094b8;
  --cyan-glow: rgba(0, 224, 255, 0.35);
  --red: #ff2d55;
  --red-bright: #ff4d6d;
  --red-glow: rgba(255, 45, 85, 0.28);
  --red-deep: #d81e45;

  /* 玻璃拟态 */
  --glass: rgba(255, 255, 255, 0.66);
  --glass-strong: rgba(255, 255, 255, 0.86);
  --glass-border: rgba(255, 255, 255, 0.9);
  --glass-shadow: 0 12px 40px rgba(11, 27, 43, 0.1);

  /* 字体 */
  --font: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;

  /* 布局 */
  --container: 1200px;
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --header-h: 76px;
  --shadow-1: 0 6px 24px rgba(11, 27, 43, 0.08);
  --shadow-2: 0 20px 60px rgba(11, 27, 43, 0.14);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============ Reset & Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
::selection { background: var(--cyan); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-soft); }
::-webkit-scrollbar-thumb { background: #c6d2de; border-radius: 8px; border: 2px solid var(--bg-soft); }
::-webkit-scrollbar-thumb:hover { background: #a8b8c8; }

/* ============ Typography ============ */
h1, h2, h3, h4 { font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; color: var(--ink); }
.display {
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.04;
}
.display em { font-style: normal; color: transparent;
  background: linear-gradient(100deg, var(--cyan-deep) 0%, var(--cyan) 45%, #5ee7ff 100%);
  -webkit-background-clip: text; background-clip: text; }
.display .red-t { background: linear-gradient(100deg, var(--red-deep), var(--red-bright));
  -webkit-background-clip: text; background-clip: text; color: transparent; }

.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-3); font-weight: 400; line-height: 1.8; }

/* 小节编号标签: LAB-01 */
.sec-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--cyan-deep);
}
.sec-tag::before { content: ""; width: 26px; height: 2px; background: linear-gradient(90deg, var(--cyan), transparent); }
.sec-tag .n { color: var(--red); }
.sec-title { font-size: clamp(1.9rem, 3.4vw, 2.9rem); font-weight: 900; margin-top: 12px; }
.sec-sub { color: var(--ink-3); margin-top: 14px; max-width: 720px; }

/* ============ 纹理: 碳纤维 / 纳米网格 ============ */
.carbon {
  background-image:
    repeating-linear-gradient(0deg, rgba(11,27,43,.045) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(90deg, rgba(11,27,43,.045) 0 1px, transparent 1px 5px);
}
.nanogrid {
  background-image:
    linear-gradient(rgba(0,200,232,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.nanogrid-d { background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px; border-radius: 999px;
  font-weight: 700; font-size: 0.95rem; letter-spacing: 0.02em;
  transition: all .35s var(--ease);
  position: relative; overflow: hidden;
}
.btn-cyan { background: linear-gradient(120deg, var(--cyan-deep), var(--cyan)); color: #fff; box-shadow: 0 8px 24px var(--cyan-glow); }
.btn-cyan:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(0,224,255,.45); }
.btn-ghost { background: rgba(255,255,255,.55); color: var(--ink); border: 1px solid var(--line-2); backdrop-filter: blur(10px); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan-deep); transform: translateY(-3px); box-shadow: 0 10px 28px rgba(11,27,43,.08); }
.btn-red { background: linear-gradient(120deg, var(--red-deep), var(--red-bright)); color: #fff; box-shadow: 0 8px 24px var(--red-glow); }
.btn-red:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(255,45,85,.42); }
.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ============ 导航栏 ============ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: all .4s var(--ease);
}
.header.scrolled {
  background: var(--glass-strong);
  backdrop-filter: blur(18px) saturate(1.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 32px rgba(11,27,43,.07);
}
.header-inner {
  width: min(var(--container), 92%);
  margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: #fff;
  display: grid; place-items: center; position: relative;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(11,27,43,.12);
}
.logo-mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.logo-mark svg { width: 26px; height: 26px; }
.logo-mark .pulse { position: absolute; inset: 0; border-radius: 12px; box-shadow: 0 0 0 0 var(--cyan-glow); animation: logoPulse 3s infinite; }
@keyframes logoPulse {
  0% { box-shadow: 0 0 0 0 rgba(0,224,255,.4); }
  70% { box-shadow: 0 0 0 12px rgba(0,224,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,224,255,0); }
}
.logo-text { line-height: 1.15; }
.logo-text .cn { font-weight: 900; font-size: 1.12rem; letter-spacing: .02em; }
.logo-text .en { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .34em; color: var(--ink-4); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 10px 16px; font-size: .94rem; font-weight: 600; color: var(--ink-2);
  border-radius: 999px; transition: all .3s var(--ease); position: relative;
}
.nav a:hover { color: var(--cyan-deep); }
.nav a.active { color: var(--cyan-deep); }
.nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent); border-radius: 2px;
}
.header-cta { display: flex; align-items: center; gap: 14px; }
/* 语言切换菜单 */
.lang-switch { display: flex; align-items: center; gap: 2px; border: 1px solid var(--line-2); border-radius: 999px;
  padding: 3px; background: rgba(255,255,255,.7); flex: none; }
.lang-switch a { font-family: var(--font-mono); font-size: .72rem; font-weight: 800; letter-spacing: .04em;
  padding: 5px 11px; border-radius: 999px; color: var(--ink-3); transition: all .25s var(--ease); }
.lang-switch a:hover { color: var(--cyan-deep); }
.lang-switch a.on { background: linear-gradient(135deg, var(--cyan), var(--cyan-bright)); color: #fff;
  box-shadow: 0 3px 10px rgba(0,200,232,.35); }
.lang-switch .sep { color: var(--line-2); font-size: .72rem; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--line-2);
  background: rgba(255,255,255,.7); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端导航抽屉 */
@media (max-width: 980px) {
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--glass-strong); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 12px 6vw 20px;
    transform: translateY(-120%); opacity: 0; pointer-events: none;
    transition: all .45s var(--ease);
  }
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { padding: 15px 8px; border-radius: 12px; font-size: 1.02rem; }
  .nav a.active::after { display: none; }
  .nav a.active { background: rgba(0,200,232,.09); }
  .nav-toggle { display: flex; }
  .header-cta .btn { display: none; }
}

/* ============ 英雄区 ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: var(--bg);
  padding: calc(var(--header-h) + 40px) 0 90px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg .glow-1 { position: absolute; width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,224,255,.16), transparent 62%);
  top: -140px; right: -120px; filter: blur(10px); animation: drift 14s ease-in-out infinite alternate; }
.hero-bg .glow-2 { position: absolute; width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,45,85,.1), transparent 62%);
  bottom: -160px; left: -120px; filter: blur(10px); animation: drift 18s ease-in-out infinite alternate-reverse; }
@keyframes drift { from { transform: translate(0,0) scale(1); } to { transform: translate(40px,30px) scale(1.08); } }

.hero-inner { position: relative; z-index: 2; width: min(var(--container), 92%); margin: 0 auto; }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: 48px; align-items: center; max-width: 920px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: .82rem; font-weight: 700;
  letter-spacing: .22em; color: var(--ink-3); text-transform: uppercase;
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line-2);
  background: var(--glass); backdrop-filter: blur(10px);
  margin-bottom: 26px;
}
.hero-kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: blink 2s infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero h1 { margin-bottom: 24px; }
.hero .lead { max-width: 640px; margin-bottom: 38px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 54px; }

.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; max-width: 720px; }
.hstat {
  background: var(--glass); border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-radius: var(--radius); padding: 20px 18px;
  box-shadow: var(--glass-shadow);
  transition: all .4s var(--ease);
}
.hstat:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); border-color: rgba(0,224,255,.4); }
.hstat .num { font-size: clamp(1.6rem, 2.4vw, 2.2rem); font-weight: 900; letter-spacing: -.02em; line-height: 1; }
.hstat .num i { font-style: normal; color: var(--cyan); }
.hstat .lab { font-size: .8rem; color: var(--ink-3); margin-top: 8px; }

/* 右侧分子结构可视化 */
.hero-visual { position: relative; }
.molecule-card {
  position: relative; border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255,255,255,.9), rgba(240,247,250,.75));
  border: 1px solid rgba(255,255,255,.95);
  box-shadow: var(--shadow-2);
  backdrop-filter: blur(16px);
  padding: 30px; overflow: hidden;
}
.molecule-card::before { content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(0,200,232,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,232,.06) 1px, transparent 1px);
  background-size: 32px 32px; pointer-events: none; }
.molecule-card svg { width: 100%; height: auto; position: relative; z-index: 1; }
.molecule-card .tag-row { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; position: relative; z-index: 1; }
.molecule-card .tag-row .t { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .2em; color: var(--ink-4); }
.molecule-card .tag-row .s { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; font-weight: 700; color: var(--ink-2); }
.floating-chip {
  position: absolute; z-index: 3;
  background: var(--glass-strong); border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: 14px; padding: 12px 16px;
  box-shadow: var(--glass-shadow);
  display: flex; align-items: center; gap: 10px;
  font-size: .82rem; font-weight: 700;
  animation: floaty 6s ease-in-out infinite;
}
.floating-chip .ic { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff; font-size: .8rem; font-weight: 900; }
.floating-chip .ic.c { background: linear-gradient(135deg, var(--cyan-deep), var(--cyan)); box-shadow: 0 4px 12px var(--cyan-glow); }
.floating-chip .ic.r { background: linear-gradient(135deg, var(--red-deep), var(--red-bright)); box-shadow: 0 4px 12px var(--red-glow); }
.chip-1 { top: -24px; left: -30px; animation-delay: 0s; }
.chip-2 { bottom: 70px; right: -34px; animation-delay: 1.2s; }
.chip-3 { bottom: -26px; left: 30%; animation-delay: 2.4s; }
@keyframes floaty { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-14px) rotate(1.2deg); } }

/* ============ Section 通用 ============ */
.section { padding: 110px 0; position: relative; }
.section.alt { background: var(--bg-soft); }
.section.dark { background: var(--ink); color: #cfdbe8; }
.section.dark .sec-title, .section.dark h3 { color: #fff; }
.section.dark .lead, .section.dark .sec-sub, .section.dark p { color: #9fb2c6; }
.container { width: min(var(--container), 92%); margin: 0 auto; position: relative; z-index: 1; }
.sec-head { margin-bottom: 56px; }

/* ============ 玻璃卡片 ============ */
.glass-card {
  background: var(--glass); border: 1px solid rgba(255,255,255,.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: all .45s var(--ease);
  position: relative; overflow: hidden;
}
.glass-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-2); }
.glass-card::after { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 70%);
  opacity: 0; transition: opacity .4s var(--ease); }
.glass-card:hover::after { opacity: 1; }
.glass-card .corner { position: absolute; top: 14px; right: 18px;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; color: var(--ink-4); }

/* 产品卡片 */
.p-card { padding: 30px 26px; }
.p-card .p-ico { width: 58px; height: 58px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0,200,232,.14), rgba(0,200,232,.05));
  border: 1px solid rgba(0,200,232,.25); }
.p-card .p-ico svg { width: 28px; height: 28px; }
.p-card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.p-card p { color: var(--ink-3); font-size: .92rem; }
.p-card .p-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.p-card .p-meta span { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .06em;
  color: var(--cyan-deep); background: rgba(0,200,232,.08); border: 1px solid rgba(0,200,232,.2);
  padding: 4px 10px; border-radius: 999px; }
.p-card .link { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px;
  font-size: .88rem; font-weight: 700; color: var(--ink); transition: all .3s var(--ease); }
.p-card .link:hover { color: var(--cyan-deep); gap: 10px; }

/* 行业卡片 */
.ind-card { padding: 26px 24px; }
.ind-card .ind-num { font-family: var(--font-mono); font-size: .74rem; font-weight: 700; letter-spacing: .2em; color: var(--red); }
.ind-card h3 { font-size: 1.1rem; margin: 10px 0 8px; }
.ind-card p { color: var(--ink-3); font-size: .88rem; }
.ind-card .ind-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.ind-card .ind-tags span { font-size: .7rem; color: var(--ink-4); background: var(--bg-soft); border-radius: 999px; padding: 3px 9px; }

/* 数据条 / 列表项 */
.check-li { display: flex; gap: 12px; align-items: flex-start; margin: 12px 0; color: var(--ink-2); }
.check-li .ck { flex: none; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--cyan-deep), var(--cyan)); color: #fff; font-size: .66rem; margin-top: 3px; box-shadow: 0 4px 10px var(--cyan-glow); }

/* ============ 首页品牌区 ============ */
.brand-band { padding: 40px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg); }
.brand-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 22px; }
.brand-row .b { display: flex; align-items: center; gap: 10px; color: var(--ink-4); font-size: .9rem; font-weight: 700; letter-spacing: .06em; opacity: .85; transition: all .3s; }
.brand-row .b:hover { opacity: 1; color: var(--ink-2); }

/* ============ 关于页时间线 ============ */
.timeline { position: relative; padding: 10px 0; }
.timeline::before { content: ""; position: absolute; left: 18px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--red)); opacity: .35; }
.tl-item { position: relative; padding-left: 64px; padding-bottom: 52px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot { position: absolute; left: 8px; top: 6px; width: 22px; height: 22px; border-radius: 50%;
  background: #fff; border: 5px solid var(--cyan); box-shadow: 0 0 0 6px rgba(0,224,255,.14), 0 0 18px var(--cyan-glow); }
.tl-item.alt .tl-dot { border-color: var(--red); box-shadow: 0 0 0 6px rgba(255,45,85,.12), 0 0 18px var(--red-glow); }
.tl-year { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 800; color: var(--ink); letter-spacing: .04em; }
.tl-year .tag { display: inline-block; font-family: var(--font); font-size: .68rem; font-weight: 800; color: #fff;
  background: linear-gradient(120deg, var(--cyan-deep), var(--cyan)); border-radius: 999px; padding: 2px 10px; margin-left: 8px; vertical-align: 2px; }
.tl-item.alt .tl-year .tag { background: linear-gradient(120deg, var(--red-deep), var(--red-bright)); }
.tl-desc { color: var(--ink-3); margin-top: 8px; font-size: .96rem; max-width: 640px; }

/* 资质荣誉卡 */
.honor-card { padding: 26px 22px; text-align: center; }
.honor-card .h-ic { width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px; display: grid; place-items: center;
  background: linear-gradient(160deg, rgba(0,200,232,.12), rgba(255,255,255,.6)); border: 1px solid rgba(0,200,232,.22); }
.honor-card h3 { font-size: 1.02rem; }
.honor-card p { color: var(--ink-3); font-size: .82rem; margin-top: 6px; }
.honor-card .yr { display: inline-block; margin-top: 12px; font-family: var(--font-mono); font-size: .7rem; font-weight: 700;
  color: var(--red); background: rgba(255,45,85,.08); border: 1px solid rgba(255,45,85,.2); border-radius: 999px; padding: 3px 12px; }

/* ============ 产品页 ============ */
.prod-nav { position: sticky; top: var(--header-h); z-index: 50;
  background: var(--glass-strong); backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line); }
.prod-nav-inner { width: min(var(--container), 92%); margin: 0 auto;
  display: flex; gap: 6px; overflow-x: auto; padding: 12px 0; scrollbar-width: none; }
.prod-nav-inner::-webkit-scrollbar { display: none; }
.prod-nav-inner a { flex: none; padding: 9px 18px; border-radius: 999px; font-size: .86rem; font-weight: 700;
  color: var(--ink-3); border: 1px solid var(--line-2); transition: all .3s var(--ease); white-space: nowrap; }
.prod-nav-inner a:hover { border-color: var(--cyan); color: var(--cyan-deep); }
.prod-nav-inner a.on { background: var(--ink); color: #fff; border-color: var(--ink); }

/* 产品详情块 */
.prod-block { padding: 100px 0; border-bottom: 1px solid var(--line); }
.prod-block .pb-head { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.prod-block .pb-head h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
.prod-block .pb-head .en { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .24em; color: var(--ink-4); text-transform: uppercase; }
.prod-desc { color: var(--ink-3); max-width: 860px; margin-bottom: 34px; }

/* 产品规格表 */
.spec-wrap { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); background: #fff; box-shadow: var(--shadow-1); }
.spec-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.spec-table thead th {
  background: linear-gradient(120deg, #0b1b2b, #12334a); color: #fff; font-weight: 700;
  padding: 16px 20px; text-align: left; white-space: nowrap; font-size: .86rem; letter-spacing: .04em;
}
.spec-table thead th:nth-child(2) { color: var(--cyan-bright); }
.spec-table tbody td { padding: 15px 20px; border-top: 1px solid var(--line); vertical-align: top; }
.spec-table tbody tr:nth-child(even) { background: var(--bg-soft); }
.spec-table tbody tr { transition: background .25s; }
.spec-table tbody tr:hover { background: rgba(0,200,232,.06); }
.spec-table td.code { font-family: var(--font-mono); font-weight: 800; color: var(--cyan-deep); white-space: nowrap; }
.spec-table td.name { font-weight: 700; }
.spec-table td.feat { color: var(--ink-3); }
@media (max-width: 720px) { .spec-table { font-size: .8rem; } .spec-table thead th, .spec-table tbody td { padding: 12px 12px; } }

/* ============ 案例页 ============ */
.case-hero-card { border-radius: var(--radius-lg); overflow: hidden; position: relative; margin-bottom: 40px;
  background: linear-gradient(150deg, #0b1b2b, #10314a 60%, #0e2c44);
  box-shadow: var(--shadow-2); }
.case-hero-card .case-bg { position: absolute; inset: 0; opacity: .5;
  background-image: radial-gradient(rgba(0,224,255,.14) 1.5px, transparent 1.5px); background-size: 34px 34px; }
.case-hero-card .case-body { position: relative; z-index: 1; padding: clamp(28px, 4vw, 54px); }
.case-hero-card .c-tag { display: inline-block; font-family: var(--font-mono); font-size: .72rem; font-weight: 700; letter-spacing: .2em;
  color: #7deaff; border: 1px solid rgba(0,224,255,.4); border-radius: 999px; padding: 5px 14px; margin-bottom: 18px; }
.case-hero-card h2 { color: #fff; font-size: clamp(1.5rem, 2.6vw, 2.1rem); margin-bottom: 14px; }
.case-hero-card p { color: #b7c8d9; font-size: .95rem; max-width: 860px; }
.case-hero-card .c-stats { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 26px; }
.case-hero-card .c-stats .cs .n { font-size: 1.5rem; font-weight: 900; color: var(--cyan-bright); }
.case-hero-card .c-stats .cs .l { font-size: .76rem; color: #8fa5b9; }

/* ============ 技术能力页 ============ */
.cap-card { padding: 30px 26px; }
.cap-card .cap-num { font-family: var(--font-mono); font-size: 1.7rem; font-weight: 900;
  color: transparent; -webkit-text-stroke: 1.5px rgba(0,200,232,.65); line-height: 1; }
.cap-card h3 { font-size: 1.16rem; margin: 14px 0 8px; }
.cap-card p { color: var(--ink-3); font-size: .9rem; }
.cap-card .cap-steps { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.cap-card .cap-steps span { font-size: .8rem; color: var(--ink-2); display: flex; gap: 8px; align-items: center; }
.cap-card .cap-steps span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--red); flex: none; }

/* 流程步骤 */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.flow-step { text-align: center; padding: 26px 14px; border-radius: var(--radius); position: relative; }
.flow-step .fs-n { font-family: var(--font-mono); font-size: .72rem; font-weight: 800; letter-spacing: .16em; color: var(--red); }
.flow-step .fs-ic { width: 52px; height: 52px; margin: 14px auto; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(0,200,232,.16), rgba(255,255,255,.7)); border: 1px solid rgba(0,200,232,.3); box-shadow: 0 8px 20px rgba(0,200,232,.12); }
.flow-step h4 { font-size: .98rem; margin-bottom: 4px; }
.flow-step p { font-size: .78rem; color: var(--ink-4); }
@media (max-width: 900px) { .flow { grid-template-columns: repeat(2, 1fr); } }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.c-card { padding: 34px 30px; }
.c-card .c-pos { font-family: var(--font-mono); font-size: .74rem; font-weight: 800; letter-spacing: .2em; color: var(--red); }
.c-card h3 { font-size: 1.35rem; margin: 12px 0 20px; }
.c-row { display: flex; gap: 14px; margin: 15px 0; align-items: flex-start; }
.c-row .c-ic { flex: none; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(0,200,232,.14), rgba(255,255,255,.6)); border: 1px solid rgba(0,200,232,.22); color: var(--cyan-deep); }
.c-row .c-ic svg { width: 18px; height: 18px; }
.c-row .c-k { font-size: .78rem; color: var(--ink-4); }
.c-row .c-v { font-size: .98rem; font-weight: 600; color: var(--ink); }

/* 表单 */
.form-card { padding: 40px 36px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .full { grid-column: 1 / -1; }
.f-label { display: block; font-size: .8rem; font-weight: 700; color: var(--ink-2); margin-bottom: 8px; }
.f-label span { color: var(--red); }
.f-input, .f-area {
  width: 100%; border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  padding: 13px 16px; font-size: .94rem; color: var(--ink); background: rgba(255,255,255,.85);
  transition: all .3s var(--ease); outline: none;
}
.f-input:focus, .f-area:focus { border-color: var(--cyan); box-shadow: 0 0 0 4px rgba(0,224,255,.12); }
.f-area { resize: vertical; min-height: 130px; }
.f-tip { font-size: .76rem; color: var(--ink-4); margin-top: 8px; }

/* ============ CTA 横幅 ============ */
.cta-band { border-radius: var(--radius-lg); overflow: hidden; position: relative;
  background: linear-gradient(120deg, #0b1b2b 0%, #10344f 55%, #0d2b46 100%); padding: clamp(40px, 6vw, 76px);
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band::before { content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(0,224,255,.16) 1.5px, transparent 1.5px); background-size: 30px 30px; }
.cta-band .cb-inner { position: relative; z-index: 1; }
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.3rem); margin-bottom: 10px; }
.cta-band p { color: #9fb4c8; max-width: 520px; }
.cta-band .btn { position: relative; z-index: 1; }

/* ============ 页脚 ============ */
.footer { background: var(--ink); color: #9fb2c6; padding: 80px 0 0; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--red), transparent); opacity: .8; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 56px; }
.footer h4 { color: #fff; font-size: .98rem; margin-bottom: 20px; letter-spacing: .02em; }
.footer a.f-link { display: block; padding: 5px 0; font-size: .88rem; color: #8fa2b6; transition: all .3s var(--ease); }
.footer a.f-link:hover { color: var(--cyan-bright); transform: translateX(4px); }
.footer .f-about { font-size: .9rem; line-height: 1.9; }
.footer .f-contact li { display: flex; gap: 10px; margin: 12px 0; font-size: .88rem; align-items: flex-start; }
.footer .f-contact svg { flex: none; width: 16px; height: 16px; margin-top: 4px; color: var(--cyan); }
.footer .f-mono { font-family: var(--font-mono); font-size: .8rem; color: #7d92a8; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .8rem; color: #6f8499; }
.footer-bottom a { color: #6f8499; }
.footer-bottom a:hover { color: var(--cyan-bright); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ============ 粒子画布 ============ */
#particles { position: absolute; inset: 0; z-index: 1; pointer-events: none; }

/* ============ 滚动进场 ============ */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }
.reveal[data-delay="4"] { transition-delay: .48s; }

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; gap: 70px; }
  .hero-visual { max-width: 560px; }
}
@media (max-width: 900px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
}
@media (max-width: 560px) {
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .form-grid { grid-template-columns: 1fr; }
  .floating-chip { display: none; }
}

/* ============ 工具类 ============ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
@media (max-width: 1000px) { .grid-3, .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 40px; } }

.facility-ic {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, rgba(0,200,232,.1), rgba(255,255,255,.6));
  border: 1px solid rgba(0,200,232,.2);
  display: grid; place-items: center; margin-bottom: 14px;
  color: var(--cyan-deep);
}
.facility-ic svg { width: 24px; height: 24px; }
.glass-card h3 { font-size: 1rem; font-weight: 800; color: var(--ink-1); margin-bottom: 8px; }
.glass-card p { font-size: .85rem; line-height: 1.6; color: var(--ink-3); margin: 0; }

.mt-10 { margin-top: 10px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; }
.mb-24 { margin-bottom: 24px; } .mb-40 { margin-bottom: 40px; }
.center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* 等距晶体插图 */
.iso-svg { width: 100%; height: auto; }

/* 对比度强调 */
.hi-tag { display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 800;
  color: var(--red); background: rgba(255,45,85,.07); border: 1px solid rgba(255,45,85,.22);
  padding: 6px 14px; border-radius: 999px; }

/* 分析测试设备清单 */
.devices-full { margin-top: 46px; }
.device-grid-title { display: flex; align-items: center; gap: 10px; font-size: .95rem; font-weight: 800; color: var(--ink-3); margin-bottom: 18px; letter-spacing: .12em; text-transform: uppercase; }
.device-grid-title .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan-bright); box-shadow: 0 0 10px var(--cyan-bright); flex: none; }
.device-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.device-card { position: relative; background: var(--bg-white); border: 1px solid var(--line-1); border-radius: 16px; padding: 16px 16px 14px; box-shadow: var(--shadow-1); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.device-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: rgba(0,200,232,.35); }
.device-no { position: absolute; top: 12px; right: 14px; font-family: var(--font-mono); font-size: .72rem; font-weight: 800; color: var(--cyan-deep); opacity: .5; letter-spacing: .08em; }
.device-abbr { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 900; color: var(--cyan-deep); line-height: 1.15; margin-bottom: 5px; }
.device-name { font-size: .86rem; font-weight: 700; color: var(--ink-1); margin-bottom: 6px; }
.device-desc { font-size: .76rem; line-height: 1.5; color: var(--ink-3); }
@media (max-width: 1100px) { .device-grid { grid-template-columns: repeat(4, 1fr); } .device-card:nth-child(9), .device-card:nth-child(10) { grid-column: span 2; } }
@media (max-width: 900px) { .device-grid { grid-template-columns: repeat(3, 1fr); } .device-card:nth-child(10) { grid-column: span 2; } }
@media (max-width: 720px) { .device-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } .device-card { padding: 14px 14px 12px; } }
@media (max-width: 560px) { .device-grid { grid-template-columns: 1fr; } }

/* 实验室设备实景横幅 */
.lab-stage { margin-top: 46px; border-radius: 24px; padding: 26px 26px 22px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #ffffff 0%, #f2fbff 55%, #e9f8ff 100%);
  border: 1px solid rgba(0,200,232,.28);
  box-shadow: 0 18px 48px rgba(11,27,43,.10), inset 0 1px 0 rgba(255,255,255,.9);
}
.lab-stage::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(0,200,232,.16) 1px, transparent 1px);
  background-size: 22px 22px; opacity: .5; }
.lab-stage::after { content: ""; position: absolute; top: -70px; right: -70px; width: 190px; height: 190px; pointer-events: none;
  background: radial-gradient(circle, rgba(0,224,255,.20) 0%, transparent 70%); }
.lab-stage-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; position: relative; z-index: 1; }
.lab-stage-tag { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: .78rem; font-weight: 800; letter-spacing: .16em; color: var(--cyan-deep); }
.lab-stage-tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan-bright); box-shadow: 0 0 10px var(--cyan-bright); }
.lab-stage-note { font-size: .84rem; font-weight: 600; color: var(--ink-4); }
.lab-figure { margin: 0; position: relative; z-index: 1; border-radius: 16px; overflow: hidden;
  border: 1px solid rgba(0,200,232,.30); box-shadow: 0 10px 30px rgba(11,27,43,.12); background: #fff; }
.lab-figure img { display: block; width: 100%; height: auto; }
.lab-figure figcaption { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px;
  background: linear-gradient(90deg, rgba(11,27,43,.92), rgba(18,58,82,.92)); color: rgba(255,255,255,.88);
  font-size: .82rem; letter-spacing: .08em; font-weight: 600; }
.lab-figure .cap-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--red); box-shadow: 0 0 8px var(--red-bright); }
@media (max-width: 640px) { .lab-stage { padding: 18px 14px 14px; margin-top: 34px; border-radius: 18px; } .lab-stage-note { font-size: .78rem; } }