/* ========== 基础与变量 ========== */
:root {
  --ink: #071a24;
  --ink-2: #0b2532;
  --panel: rgba(255, 255, 255, 0.05);
  --panel-line: rgba(255, 255, 255, 0.12);
  --brand: #0e7c86;
  --brand-deep: #0a5f68;
  --cyan: #22c9dd;
  --green: #7cb63d;
  --text: #22333f;
  --muted: #5d7280;
  --bg: #ffffff;
  --bg-alt: #f4f9fa;
  --line: #e2ecf0;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(7, 26, 36, 0.08);
  --shadow-lg: 0 24px 60px rgba(7, 26, 36, 0.16);
  --grad: linear-gradient(135deg, var(--brand) 0%, var(--cyan) 100%);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(34, 201, 221, 0.12), transparent 60%),
    radial-gradient(800px 400px at -10% 110%, rgba(14, 124, 134, 0.25), transparent 60%),
    var(--ink);
  color: #e8f2f5;
}

/* ========== 通用组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  border: none;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s, color 0.25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 24px rgba(14, 124, 134, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(34, 201, 221, 0.45); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #e8f2f5;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-2px); }
.btn-block { width: 100%; justify-content: center; }

.sec-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 12px; display: none;
}
.section-dark .sec-tag { color: var(--cyan); }

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}
.sec-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-dark .sec-head h2 { color: #fff; }
.sec-head p { color: var(--muted); font-size: 16px; }
.section-dark .sec-head p { color: #a8c0ca; }

.block-title {
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 40px;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--grad);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(14, 124, 134, 0.3);
}

/* 浏览器 / 手机外框 */
.browser-frame {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #eef4f6;
  border-bottom: 1px solid var(--line);
}
.browser-bar i {
  width: 10px; height: 10px; border-radius: 50%;
}
.browser-bar i:nth-child(1) { background: #ff5f57; }
.browser-bar i:nth-child(2) { background: #febc2e; }
.browser-bar i:nth-child(3) { background: #28c840; }
.browser-bar span {
  margin-left: 10px;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
  border-radius: 6px;
  padding: 2px 14px;
  flex: 1;
  max-width: 320px;
}
.browser-frame img { width: 100%; }

.phone-frame {
  width: 170px;
  border-radius: 26px;
  overflow: hidden;
  border: 6px solid #10222e;
  box-shadow: var(--shadow-lg);
  background: #fff;
}
.phone-frame img {
  width: 100%;
  aspect-ratio: 9 / 18;
  object-fit: cover;
  object-position: top;
}

/* 滚动入场 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ========== 顶部导航 ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
  background: transparent;
}
.site-header.scrolled {
  background: rgba(7, 26, 36, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}
.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; }
.brand-logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter 0.3s;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 16px;
  font-weight: 500;
  color: rgba(232, 242, 245, 0.82);
  border-radius: 8px;
  transition: color 0.25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transition: transform 0.25s;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-cta { margin-left: 12px; padding: 10px 22px; font-size: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.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); }

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 96px;
  background:
    radial-gradient(1200px 600px at 80% 0%, rgba(34, 201, 221, 0.14), transparent 60%),
    radial-gradient(900px 500px at 0% 100%, rgba(14, 124, 134, 0.3), transparent 60%),
    linear-gradient(160deg, #06141d 0%, var(--ink) 45%, #0a2b3a 100%);
  color: #e8f2f5;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(34, 201, 221, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 201, 221, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  animation: float 9s ease-in-out infinite;
}
.orb-1 { width: 380px; height: 380px; background: rgba(14, 124, 134, 0.55); top: -120px; right: 8%; }
.orb-2 { width: 260px; height: 260px; background: rgba(34, 201, 221, 0.35); bottom: -60px; left: -60px; animation-delay: -3s; }
.orb-3 { width: 160px; height: 160px; background: rgba(124, 182, 61, 0.3); top: 38%; left: 44%; animation-delay: -6s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-26px); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(34, 201, 221, 0.4);
  background: rgba(34, 201, 221, 0.1);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 2px;
  color: #fff;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead {
  font-size: 16px;
  color: #a8c0ca;
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.stat strong {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.stat strong::after { content: none; }
.stat > span { font-size: 14px; color: #8fb0bc; }
.stat strong span { color: var(--cyan); }

.hero-visual {
  position: relative;
  min-height: 460px;
}
.hero-pc {
  transform: perspective(1400px) rotateY(-8deg) rotateX(2deg);
  transition: transform 0.5s;
}
.hero-visual:hover .hero-pc { transform: perspective(1400px) rotateY(-3deg) rotateX(1deg); }
.hero-phone {
  position: absolute;
  right: -14px;
  bottom: -34px;
  transform: rotate(4deg);
  animation: float 7s ease-in-out infinite;
}
.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(10, 37, 50, 0.85);
  border: 1px solid rgba(34, 201, 221, 0.45);
  backdrop-filter: blur(8px);
  color: #d9f4f8;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
  animation: float 6s ease-in-out infinite;
}
.float-chip i { color: var(--cyan); }
.chip-1 { top: -18px; left: 6%; }
.chip-2 { bottom: 12%; left: -24px; animation-delay: -2.5s; }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  color: rgba(232, 242, 245, 0.5);
  font-size: 18px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ========== 公司简介 ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.about-logo { height: 52px; width: auto; margin-bottom: 22px; }
.about-copy h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 800;
  margin-bottom: 20px;
}
.about-copy p { color: var(--muted); margin-bottom: 16px; }
.about-slogan {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border-left: 4px solid var(--brand);
  background: var(--bg-alt);
  border-radius: 0 12px 12px 0;
  font-weight: 700;
  color: var(--brand-deep);
}
.about-slogan i { color: var(--cyan); }
.about-cards { display: flex; flex-direction: column; gap: 20px; }
.value-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: transform 0.3s, box-shadow 0.3s;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.value-card .value-icon {
  flex: none;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--grad);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px;
}
.value-card h3 { font-size: 17px; margin-bottom: 6px; flex: none; }
.value-card p { color: var(--muted); font-size: 14px; }

/* ========== 电缆云报价 ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card h3 { font-size: 18px; margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: 14px; }

.showcase {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.showcase-copy h3 { font-size: 24px; font-weight: 800; margin-bottom: 22px; }
.check-list { margin-bottom: 30px; }
.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 15px;
}
.check-list i { color: var(--green); font-size: 18px; margin-top: 3px; }

/* ========== 电缆云MES ========== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}
.module-card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 14px;
  padding: 26px 22px;
  text-align: center;
  transition: transform 0.3s, border-color 0.3s, background 0.3s;
}
.module-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 201, 221, 0.5);
  background: rgba(34, 201, 221, 0.08);
}
.module-card i {
  font-size: 26px;
  color: var(--cyan);
  margin-bottom: 14px;
}
.module-card h3 { font-size: 16px; color: #fff; margin-bottom: 6px; }
.module-card p { font-size: 12.5px; color: #8fb0bc; }

.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 108px;
  padding: 18px 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--panel-line);
}
.flow-step i { font-size: 22px; color: var(--cyan); }
.flow-step span { font-size: 14px; font-weight: 600; color: #e8f2f5; }
.flow-arrow { color: rgba(34, 201, 221, 0.6); font-size: 16px; }

.mes-frame { max-width: 960px; margin: 0 auto; }
.section-dark .browser-frame { border-color: var(--panel-line); }
.section-dark .browser-bar { background: #10222e; border-color: var(--panel-line); }
.section-dark .browser-bar span { background: #0b2532; color: #8fb0bc; }

/* ========== GEO ========== */
.geo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.geo-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.geo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.geo-card h3 { font-size: 17px; margin-bottom: 10px; }
.geo-card p { color: var(--muted); font-size: 14px; }

.geo-demo {
  max-width: 760px;
  margin: 0 auto;
  background: linear-gradient(160deg, #0b2532, #071a24);
  border: 1px solid var(--panel-line);
  border-radius: 20px;
  padding: 36px 40px;
  color: #e8f2f5;
  box-shadow: var(--shadow-lg);
}
.geo-demo-q, .geo-demo-a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.geo-demo-q { color: #8fb0bc; }
.geo-demo-a { color: var(--cyan); }
.geo-q-text { font-size: 16px; color: #c6dbe2; margin-bottom: 22px; }
.geo-a-text { font-size: 15px; color: #a8c0ca; margin-bottom: 24px; }
.geo-a-text strong { color: var(--cyan); }
.geo-demo-note {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px dashed var(--panel-line);
  color: var(--green);
  font-weight: 600;
  font-size: 14px;
}

/* ========== 软件开发 ========== */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}
.dev-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.dev-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.dev-card h3 { font-size: 17px; margin-bottom: 10px; }
.dev-card p { color: var(--muted); font-size: 14px; }

.process { margin-bottom: 80px; }
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  position: relative;
}
.process-steps::before {
  content: "";
  position: absolute;
  top: 30px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
  opacity: 0.35;
}
.step { text-align: center; position: relative; }
.step-dot {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--brand);
  position: relative;
  z-index: 1;
  transition: transform 0.3s, border-color 0.3s, color 0.3s, box-shadow 0.3s;
}
.step:hover .step-dot {
  transform: scale(1.08);
  border-color: var(--cyan);
  color: var(--brand-deep);
  box-shadow: 0 10px 24px rgba(14, 124, 134, 0.25);
}
.step h4 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13px; color: var(--muted); }

.service-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  background: linear-gradient(150deg, var(--brand-deep), var(--brand) 55%, #12919d);
  border-radius: 20px;
  padding: 44px 40px;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.service-item i { font-size: 30px; margin-bottom: 16px; color: #d9f4b8; }
.service-item h4 { font-size: 18px; margin-bottom: 8px; }
.service-item p { font-size: 14px; color: rgba(255, 255, 255, 0.85); }

/* ========== 联系我们 ========== */
.contact-grid {
  display: grid;
  /* grid-template-columns: 0.9fr 1.1fr; */
  gap: 48px;
  align-items: start;
}
.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.contact-card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 14px;
  padding: 24px 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: border-color 0.3s, transform 0.3s;
}
.contact-card:hover { border-color: rgba(34, 201, 221, 0.5); transform: translateY(-4px); }
.contact-card > i {
  font-size: 20px;
  color: var(--cyan);
  margin-top: 4px;
}
.contact-card h4 { font-size: 15px; color: #fff; margin-bottom: 6px; }
.contact-card p { font-size: 14px; color: #a8c0ca; line-height: 1.6; }

.contact-form {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--panel-line);
  border-radius: 20px;
  padding: 36px;
}
.contact-form h3 { color: #fff; font-size: 20px; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #a8c0ca;
  margin-bottom: 8px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--panel-line);
  background: rgba(7, 26, 36, 0.6);
  color: #e8f2f5;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
  resize: vertical;
}
.form-field select option { color: var(--text); background: #fff; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 201, 221, 0.18);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: #55707c; }

/* ========== 页脚 ========== */
.site-footer {
  background: #05121a;
  color: #8fb0bc;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-logo {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 18px;
}
.footer-brand p { font-size: 14px; margin-bottom: 8px; color: #c6dbe2; font-weight: 600; }
.footer-desc { font-weight: 400 !important; color: #8fb0bc !important; max-width: 300px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  margin-bottom: 10px;
  transition: color 0.25s, transform 0.25s;
}
.footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
.footer-col a i { margin-right: 8px; color: var(--cyan); }
.footer-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  font-size: 13px;
  text-align: center;
}
.footer-bar .icp { margin-left: 10px; }

/* ========== Toast ========== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translate(-50%, 20px);
  background: rgba(7, 26, 36, 0.92);
  color: #fff;
  border: 1px solid rgba(34, 201, 221, 0.5);
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s, transform 0.35s;
  z-index: 200;
  backdrop-filter: blur(8px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 72px; }
  .hero-visual { min-height: 0; max-width: 640px; margin: 0 auto; width: 100%; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .module-grid { grid-template-columns: repeat(3, 1fr); }
  .geo-grid, .dev-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .showcase { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 992px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(7, 26, 36, 0.98);
    backdrop-filter: blur(12px);
    padding: 12px 4vw 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }
  .main-nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav-link { padding: 14px 8px; font-size: 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
  .nav-link::after { display: none; }
  .nav-cta { margin: 16px 0 0; justify-content: center; }
  .site-header { background: rgba(7, 26, 36, 0.92); backdrop-filter: blur(12px); }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .hero { padding-top: calc(var(--header-h) + 32px); }
  .hero-stats { gap: 28px; }
  .stat strong { font-size: 28px; }
  .hero-phone { width: 130px; right: -6px; bottom: -22px; }
  .chip-2 { left: -8px; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: 1fr; gap: 28px; }
  .process-steps::before { display: none; }
  .service-band { grid-template-columns: 1fr; padding: 32px 26px; }
  .contact-info { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
  .flow { gap: 12px; }
  .geo-demo { padding: 28px 24px; }
}

@media (max-width: 576px) {
  .feature-grid, .geo-grid, .dev-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-visual { min-height: 0; }
  .float-chip { display: none; }
}

/* ========== GEO 专页（geo.html） ========== */
.geo-page-hero .hero-inner {
  grid-template-columns: 1fr;
  text-align: center;
  justify-items: center;
}
.geo-page-hero .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.geo-page-hero .lead { max-width: 640px; }

/* 主流 AI 模型卡片 */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.ai-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(14, 124, 134, 0.4);
}
.ai-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 18px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ai-logo img { width: 38px; height: 38px; object-fit: contain; }
.ai-logo--more {
  background: var(--grad);
  border: none;
  box-shadow: 0 8px 20px rgba(14, 124, 134, 0.3);
}
.ai-logo--more i { color: #fff; font-size: 22px; }
.ai-card h3 { font-size: 16px; margin-bottom: 6px; }
.ai-card p { color: var(--muted); font-size: 13px; }
#gotop {
	      width: 3.125rem;
	      height: 3.125rem;
	      background: #3d75c0;
	      border-radius: 50%;
	      cursor: pointer;
	      display: flex;
	      align-items: center;
	      justify-content: center;
	      opacity: 1;
	      transition: .5s;
	      -webkit-transition: .5s;
	      -moz-transition: .5s;
	      -ms-transition: .5s;
	      -o-transition: .5s;
	      position: fixed;
	      right: 2rem;
	      bottom: 10%;
	      z-index: 9999;
	      -webkit-border-radius: 50%;
	      -moz-border-radius: 50%;
	      -ms-border-radius: 50%;
	      -o-border-radius: 50%;
	  }
	  
	  #gotop svg {
	      width: 2rem;
	  }
	  
	  #gotop.hide {
	      height: 0;
		  opacity: 0;
	  }
	  
	  #gotop:hover {
	      background: #3d75c0;
	  }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* GEO 专页响应式 */
@media (max-width: 768px) {
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-card { padding: 22px 14px; }
  .ai-logo { width: 54px; height: 54px; }
  .ai-logo img { width: 32px; height: 32px; }
}

/* ========== 关于我们专页（about.html） ========== */
.about-page-hero .hero-inner {
  grid-template-columns: 1fr;
  text-align: center;
  justify-items: center;
}
.about-page-hero .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.about-page-hero .lead { max-width: 640px; }

/* 公司介绍 图文排版 */
.about-page-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.about-page-copy p { color: var(--muted); margin-bottom: 16px; text-indent: 2em;}
.about-page-media {
  position: relative;
  display: grid;
  gap: 28px;
}
.about-frame-2 { width: 86%; margin-left: auto; }
.about-media-chip {
  position: absolute;
  left: -14px;
  bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 700;
  animation: float 6s ease-in-out infinite;
}
.about-media-chip i { color: var(--brand); }

/* 资质荣誉 横向滚动（自动向左滚动，悬停暂停；不用 scroll-snap，避免与连续滚动冲突） */
.honor-wrap { position: relative; }
.honor-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 6px 6px 22px;
}
.honor-scroll::-webkit-scrollbar { height: 6px; }
.honor-scroll::-webkit-scrollbar-track { background: var(--line); border-radius: 999px; }
.honor-scroll::-webkit-scrollbar-thumb { background: linear-gradient(90deg, var(--brand), var(--cyan)); border-radius: 999px; }
.honor-card {
  flex: none;
  width: 280px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.honor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.honor-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--bg-alt);
}
.honor-card figcaption {
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.honor-btn {
  position: absolute;
  top: 90px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--brand-deep);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 2;
  transition: background 0.25s, color 0.25s, transform 0.25s, opacity 0.25s;
}
.honor-btn:hover { background: var(--grad); color: #fff; border-color: transparent; transform: translateY(-2px); }
.honor-prev { left: -18px; }
.honor-next { right: -18px; }

/* 菜单项增加后，中等屏宽下的导航适配 */
@media (min-width: 993px) and (max-width: 1140px) {
  .nav-link { padding: 8px 10px; font-size: 15px; }
  .nav-cta { padding: 10px 16px; margin-left: 6px; }
  .nav-wrap { gap: 14px; }
}

/* 关于我们专页响应式 */
@media (max-width: 1024px) {
  .about-page-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-media-chip { left: 0; }
}
@media (max-width: 768px) {
  .honor-btn { display: none; }
  .honor-card { width: min(260px, 78vw); }
}
@media (max-width: 576px) {
  .about-frame-2 { width: 100%; }
  .about-media-chip { display: none; }
}