/* ============================================================
   广东捷登人工智能科技有限公司 · 官方门户
   Design tokens
   ============================================================ */
:root {
  --navy-950: #061a30;
  --navy-900: #0a2540;
  --navy-800: #0e3054;
  --navy-700: #16406e;
  --cyan-500: #06b6d4;
  --cyan-400: #22c8e0;
  --cyan-300: #5ee1ef;
  --teal-500: #0ea5a4;
  --ink-900: #0f1f33;
  --ink-700: #2c4258;
  --ink-500: #55708a;
  --ink-300: #8ba2b8;
  --line-200: #dbe5ef;
  --bg-050: #f5f9fc;
  --bg-100: #eef4f9;
  --white: #ffffff;
  --amber: #f59e0b;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(10, 37, 64, 0.08);
  --shadow-pop: 0 24px 60px rgba(10, 37, 64, 0.22);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-sans);
  color: var(--ink-700);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ============ 顶部导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(6, 26, 48, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(94, 225, 239, 0.12);
  transition: background 0.3s ease;
}
.nav-inner {
  width: min(1280px, 94%); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--white); }
.brand-mark { flex: 0 0 auto; }
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name .cn { font-size: 19px; font-weight: 700; letter-spacing: 2px; }
.brand-name .en { font-size: 10px; letter-spacing: 1.6px; color: var(--cyan-300); text-transform: uppercase; }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  color: rgba(255, 255, 255, 0.78); font-size: 15px; padding: 8px 16px;
  border-radius: 999px; transition: all 0.2s ease;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--white); background: rgba(94, 225, 239, 0.14); }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-phone {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--cyan-300); font-weight: 700; font-size: 16px; letter-spacing: 0.5px;
}
.nav-btn {
  background: linear-gradient(135deg, var(--cyan-500), var(--teal-500));
  color: var(--white); font-weight: 600; font-size: 14px;
  padding: 9px 22px; border-radius: 999px;
  box-shadow: 0 6px 18px rgba(6, 182, 212, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.nav-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(6, 182, 212, 0.45); }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--white); margin: 5px 0; border-radius: 2px; transition: 0.3s; }

/* ============ 通用页头（内页） ============ */
.page-hero {
  background:
    radial-gradient(ellipse 60% 80% at 85% 10%, rgba(6, 182, 212, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 70% at 10% 90%, rgba(14, 165, 164, 0.14), transparent 60%),
    linear-gradient(160deg, var(--navy-950), var(--navy-900) 70%);
  color: var(--white);
  padding: 150px 0 78px;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(94, 225, 239, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 225, 239, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
}
.page-hero .container { position: relative; }
.crumbs { font-size: 13px; color: var(--cyan-300); letter-spacing: 2px; margin-bottom: 14px; }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 700; letter-spacing: 1px; }
.page-hero .lead { margin-top: 14px; max-width: 760px; color: rgba(255, 255, 255, 0.72); font-size: 16.5px; }

/* ============ 首页 Hero ============ */
.home-hero {
  position: relative; overflow: hidden; color: var(--white);
  background:
    radial-gradient(ellipse 55% 60% at 78% 18%, rgba(6, 182, 212, 0.28), transparent 65%),
    radial-gradient(ellipse 45% 55% at 12% 85%, rgba(14, 165, 164, 0.22), transparent 65%),
    linear-gradient(155deg, var(--navy-950) 20%, var(--navy-900) 75%, var(--navy-800));
  padding: 158px 0 0;
}
.home-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(94, 225, 239, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 225, 239, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 70% at 60% 20%, #000 20%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 20%, #000 20%, transparent 72%);
}
.home-hero .container { position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; padding-bottom: 72px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 3px; color: var(--cyan-300);
  border: 1px solid rgba(94, 225, 239, 0.35); border-radius: 999px;
  padding: 7px 18px; margin-bottom: 26px; background: rgba(6, 182, 212, 0.08);
}
.hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 10px var(--cyan-400); }
.home-hero h1 {
  font-size: clamp(34px, 4.6vw, 54px); line-height: 1.28; font-weight: 700; letter-spacing: 1px;
}
.home-hero h1 .accent {
  background: linear-gradient(100deg, var(--cyan-300), var(--teal-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 20px; font-size: 17px; color: rgba(255, 255, 255, 0.75); max-width: 540px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-tags span {
  font-size: 13px; color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 999px; padding: 5px 14px;
  background: rgba(255, 255, 255, 0.05);
}
.hero-actions { display: flex; gap: 16px; margin-top: 36px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--cyan-500), var(--teal-500));
  color: var(--white); font-weight: 600; font-size: 15.5px;
  padding: 13px 32px; border-radius: 999px;
  box-shadow: 0 10px 26px rgba(6, 182, 212, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(6, 182, 212, 0.5); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.3); color: var(--white);
  font-weight: 500; font-size: 15.5px; padding: 13px 30px; border-radius: 999px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.btn-ghost:hover { border-color: var(--cyan-300); background: rgba(94, 225, 239, 0.08); }

/* 浏览器窗口框架截图 */
.shot-frame {
  background: var(--navy-800);
  border: 1px solid rgba(94, 225, 239, 0.25);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-4deg) rotateX(1.5deg);
  transition: transform 0.4s ease;
}
.shot-frame:hover { transform: perspective(1400px) rotateY(0) rotateX(0); }
.shot-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 11px 16px; background: rgba(6, 26, 48, 0.9);
  border-bottom: 1px solid rgba(94, 225, 239, 0.15);
}
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; }
.shot-bar i:nth-child(1) { background: #ff5f57; }
.shot-bar i:nth-child(2) { background: #febc2e; }
.shot-bar i:nth-child(3) { background: #28c840; }
.shot-bar .url {
  flex: 1; margin-left: 12px; text-align: center; font-size: 11.5px;
  color: rgba(255, 255, 255, 0.5); background: rgba(255, 255, 255, 0.07);
  border-radius: 6px; padding: 3px 10px; font-family: var(--font-mono);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.shot-frame img { width: 100%; }

/* 数字统计带 */
.stats-band {
  position: relative; margin-top: -34px; z-index: 5;
}
.stats-card {
  background: var(--white); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: grid; grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid var(--line-200);
}
.stat-cell { padding: 30px 20px; text-align: center; position: relative; }
.stat-cell + .stat-cell::before {
  content: ""; position: absolute; left: 0; top: 22%; bottom: 22%;
  width: 1px; background: var(--line-200);
}
.stat-num {
  font-size: 42px; font-weight: 700; color: var(--navy-900); line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.stat-num .unit { font-size: 18px; color: var(--teal-500); margin-left: 2px; }
.stat-label { margin-top: 6px; font-size: 14px; color: var(--ink-500); }

/* ============ 通用区块 ============ */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-050); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  display: inline-block; font-size: 13px; letter-spacing: 3px; font-weight: 600;
  color: var(--teal-500); text-transform: uppercase; margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); color: var(--ink-900); font-weight: 700; letter-spacing: 0.5px; }
.section-head p { margin-top: 14px; color: var(--ink-500); font-size: 16px; }

/* 公司简介 */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.about-text h3 { font-size: 22px; color: var(--ink-900); margin-bottom: 18px; }
.about-text p { margin-bottom: 14px; font-size: 15.5px; text-align: justify; }
.about-points { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--ink-700); }
.about-points .tick {
  flex: 0 0 auto; width: 20px; height: 20px; margin-top: 3px; border-radius: 6px;
  background: linear-gradient(135deg, var(--cyan-500), var(--teal-500));
  display: inline-flex; align-items: center; justify-content: center;
}
.about-points .tick svg { width: 11px; height: 11px; }
.about-visual { position: relative; }
.about-visual .shot-frame { transform: none; }
.about-visual .float-chip {
  position: absolute; bottom: -18px; left: -14px;
  background: var(--white); border: 1px solid var(--line-200);
  border-radius: var(--radius-md); box-shadow: var(--shadow-card);
  padding: 14px 20px; display: flex; gap: 12px; align-items: center;
}
.float-chip .chip-num { font-size: 26px; font-weight: 700; color: var(--teal-500); line-height: 1; }
.float-chip .chip-txt { font-size: 13px; color: var(--ink-500); line-height: 1.4; }

/* 产品线卡片 */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.product-card {
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-card);
  display: flex; flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-pop); }
.product-shot { position: relative; background: var(--navy-950); }
.product-shot img { width: 100%; height: 250px; object-fit: cover; object-position: top left; }
.product-badge {
  position: absolute; top: 16px; left: 16px;
  background: rgba(6, 26, 48, 0.82); backdrop-filter: blur(6px);
  color: var(--cyan-300); font-family: var(--font-mono); font-weight: 600; font-size: 14px;
  padding: 6px 14px; border-radius: 8px; border: 1px solid rgba(94, 225, 239, 0.3);
}
.product-body { padding: 26px 28px 30px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { font-size: 21px; color: var(--ink-900); margin-bottom: 4px; }
.product-body .sub { font-size: 13.5px; color: var(--teal-500); font-weight: 600; letter-spacing: 0.5px; margin-bottom: 12px; }
.product-body p { font-size: 14.5px; color: var(--ink-500); }
.product-feats { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.product-feats span {
  font-size: 12.5px; color: var(--ink-700); background: var(--bg-100);
  border-radius: 999px; padding: 4px 12px;
}

/* 流程时间线 */
.flow-wrap { overflow-x: auto; padding: 10px 4px 22px; }
.flow {
  display: flex; align-items: stretch; gap: 0; min-width: 1080px;
}
.flow-step { flex: 1; position: relative; padding: 0 10px; text-align: center; }
.flow-node {
  width: 54px; height: 54px; margin: 0 auto; border-radius: 16px;
  background: linear-gradient(150deg, var(--navy-800), var(--navy-900));
  color: var(--cyan-300); font-size: 20px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(10, 37, 64, 0.22); position: relative; z-index: 2;
}
.flow-step.hot .flow-node { background: linear-gradient(150deg, #dc2626, #9f1239); color: #fff; box-shadow: 0 8px 20px rgba(220, 38, 38, 0.35); }
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; top: 27px; left: calc(50% + 34px); right: calc(-50% + 34px);
  height: 2px; background: repeating-linear-gradient(90deg, var(--cyan-400) 0 8px, transparent 8px 16px);
}
.flow-step h4 { margin-top: 14px; font-size: 15px; color: var(--ink-900); }
.flow-step p { font-size: 12.5px; color: var(--ink-500); margin-top: 4px; line-height: 1.5; }
.flow-note {
  margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.flow-note .note {
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-md);
  padding: 20px 22px;
}
.flow-note .note b { display: block; color: var(--ink-900); font-size: 15px; margin-bottom: 6px; }
.flow-note .note span { font-size: 13.5px; color: var(--ink-500); }

/* 九套替代九宫格 */
.replace-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.replace-item {
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-md);
  padding: 24px; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.replace-item:hover { border-color: var(--cyan-400); box-shadow: var(--shadow-card); }
.replace-item .idx {
  font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--teal-500);
  letter-spacing: 1px;
}
.replace-item h4 { font-size: 16.5px; color: var(--ink-900); margin: 6px 0 8px; }
.replace-item p { font-size: 13.5px; color: var(--ink-500); }

/* 特性双栏（图文左右） */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-row + .feature-row { margin-top: 90px; }
.feature-row.flip .feature-media { order: 2; }
.feature-text h3 { font-size: 24px; color: var(--ink-900); margin-bottom: 6px; }
.feature-text .en-tag { font-size: 12px; letter-spacing: 2.5px; color: var(--teal-500); font-weight: 600; text-transform: uppercase; }
.feature-text > p { margin: 14px 0 20px; color: var(--ink-500); font-size: 15px; }
.check-list li { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line-200); }
.check-list li:last-child { border-bottom: none; }
.check-list .tick {
  flex: 0 0 auto; width: 21px; height: 21px; margin-top: 4px; border-radius: 7px;
  background: linear-gradient(135deg, var(--cyan-500), var(--teal-500));
  display: inline-flex; align-items: center; justify-content: center;
}
.check-list .tick svg { width: 12px; height: 12px; }
.check-list b { color: var(--ink-900); font-size: 15px; display: block; }
.check-list span { color: var(--ink-500); font-size: 13.5px; }

/* 标准徽章 */
.standard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 34px; }
.standard-chip {
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.standard-chip b { display: block; font-family: var(--font-mono); font-size: 14px; color: var(--navy-900); }
.standard-chip span { font-size: 12px; color: var(--ink-500); }

/* CTA */
.cta-band {
  background:
    radial-gradient(ellipse 50% 90% at 85% 20%, rgba(6, 182, 212, 0.3), transparent 60%),
    linear-gradient(140deg, var(--navy-950), var(--navy-800));
  color: var(--white); border-radius: var(--radius-lg);
  padding: 64px 8%;
  display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(94, 225, 239, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 225, 239, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); position: relative; }
.cta-band p { margin-top: 10px; color: rgba(255, 255, 255, 0.7); position: relative; }
.cta-band .btns { position: relative; display: flex; gap: 14px; flex-wrap: wrap; }

/* ============ 页脚 ============ */
.footer { background: var(--navy-950); color: rgba(255, 255, 255, 0.66); margin-top: 0; }
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px;
  padding: 64px 0 48px;
}
.footer h4 { color: var(--white); font-size: 16px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; margin-top: 16px; max-width: 300px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--cyan-300); }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 14px; font-size: 14px; align-items: flex-start; }
.footer-contact .ic { flex: 0 0 auto; margin-top: 4px; color: var(--cyan-400); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0 26px; display: flex; flex-direction: column; gap: 12px;
  font-size: 13px; color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .row {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.footer-bottom .icp { text-align: center; }
.footer-bottom .icp a { color: rgba(255, 255, 255, 0.45); transition: color 0.2s ease; }
.footer-bottom .icp a:hover { color: var(--cyan-300); }

/* ============ 产品页详情 ============ */
.product-hero {
  padding: 70px 0 90px; border-bottom: 1px solid var(--line-200);
}
.product-hero .p-head { display: flex; align-items: center; gap: 18px; margin-bottom: 10px; }
.product-hero .p-mark {
  font-family: var(--font-mono); font-size: 15px; font-weight: 700; color: var(--white);
  background: linear-gradient(140deg, var(--navy-800), var(--navy-950));
  padding: 8px 16px; border-radius: 10px; border: 1px solid rgba(94, 225, 239, 0.3);
  letter-spacing: 1px;
}
.product-hero h2 { font-size: 30px; color: var(--ink-900); }
.product-hero .p-sub { color: var(--teal-500); font-weight: 600; margin-bottom: 12px; }
.product-hero p { color: var(--ink-500); max-width: 820px; }
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 30px; }
.spec-cell {
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-md);
  padding: 18px 20px; text-align: center;
}
.spec-cell b { display: block; font-size: 26px; color: var(--navy-900); }
.spec-cell span { font-size: 13px; color: var(--ink-500); }

.shot-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.shot-gallery figure { background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
.shot-gallery img { width: 100%; }
.shot-gallery figcaption { padding: 12px 18px; font-size: 13.5px; color: var(--ink-500); border-top: 1px solid var(--line-200); }
.shot-gallery figcaption b { color: var(--ink-900); margin-right: 6px; }

/* Tab 导航（产品页） */
.p-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.p-tabs a {
  font-size: 14.5px; font-weight: 600; color: var(--ink-500);
  border: 1px solid var(--line-200); border-radius: 999px; padding: 8px 20px;
  transition: all 0.2s ease; background: var(--white);
}
.p-tabs a:hover { color: var(--teal-500); border-color: var(--cyan-400); }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field label { display: block; font-size: 13.5px; color: var(--ink-700); margin-bottom: 7px; font-weight: 600; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; font-family: var(--font-sans); font-size: 14.5px; color: var(--ink-900);
  border: 1px solid var(--line-200); border-radius: var(--radius-sm);
  padding: 12px 14px; background: var(--white); outline: none; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--cyan-500); box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.14);
}
.form-field.full { grid-column: 1 / -1; }
.form-submit {
  grid-column: 1 / -1; justify-self: start;
  background: linear-gradient(135deg, var(--cyan-500), var(--teal-500));
  color: var(--white); border: none; cursor: pointer; font-family: var(--font-sans);
  font-size: 15px; font-weight: 600; padding: 13px 36px; border-radius: 999px;
  box-shadow: 0 8px 22px rgba(6, 182, 212, 0.35); transition: transform 0.2s ease;
}
.form-submit:hover { transform: translateY(-2px); }

/* 联系信息卡 */
.contact-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: start; }
.contact-cards { display: grid; gap: 16px; }
.contact-card {
  display: flex; gap: 16px; align-items: center;
  background: var(--white); border: 1px solid var(--line-200); border-radius: var(--radius-md);
  padding: 22px 24px;
}
.contact-card .c-ic {
  flex: 0 0 auto; width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(14, 165, 164, 0.12));
  display: flex; align-items: center; justify-content: center; color: var(--teal-500);
}
.contact-card b { display: block; font-size: 14px; color: var(--ink-500); font-weight: 600; }
.contact-card .val { font-size: 19px; color: var(--ink-900); font-weight: 700; letter-spacing: 0.5px; }

/* 滚动浮现动画 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; } .reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; } .reveal.d4 { transition-delay: 0.32s; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-grid, .feature-row { grid-template-columns: 1fr; gap: 36px; }
  .feature-row.flip .feature-media { order: 0; }
  .product-grid { grid-template-columns: 1fr; }
  .standard-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-card { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(3)::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .spec-grid, .shot-gallery, .flow-note { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-menu, .nav-cta .nav-btn { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-menu {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(6, 26, 48, 0.97); padding: 18px 6%;
    border-bottom: 1px solid rgba(94, 225, 239, 0.15); gap: 4px;
  }
  .nav.open .nav-menu a { padding: 12px 16px; }
  .replace-grid { grid-template-columns: 1fr; }
  .standard-grid, .form-grid, .spec-grid, .shot-gallery, .flow-note { grid-template-columns: 1fr; }
  .stats-card { grid-template-columns: 1fr 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .cta-band { padding: 44px 8%; }
}