/* 湖北六炫网络科技 — 落地页样式 */

:root {
  --bg: #FBF7F0;
  --bg-alt: #F3EDE3;
  --ink: #0B2545;
  --ink-soft: #3E5871;
  --ink-mute: #7A8AA0;
  --accent: #E4572E;
  --accent-dark: #C2411D;
  --teal: #2C8C8A;
  --teal-soft: #E4F1F0;
  --gold: #F2A65A;
  --line: rgba(11, 37, 69, .12);
  --card: #FFFFFF;
  --shadow: 0 18px 40px -22px rgba(11, 37, 69, .45);
  --radius: 18px;
  --max: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.container { width: min(var(--max), 92%); margin: 0 auto; }

/* ---------- 顶部通栏 ---------- */
.topbar {
  background: var(--ink);
  color: #D8E2EE;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
  flex-wrap: wrap;
}
.topbar a:hover { color: var(--gold); }
.topbar-tag {
  background: rgba(242, 166, 90, .16);
  color: var(--gold);
  border: 1px solid rgba(242, 166, 90, .5);
  border-radius: 999px;
  padding: 1px 10px;
  font-size: 12px;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 247, 240, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .5px;
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 17px;
  font-weight: 800;
  box-shadow: 0 8px 18px -8px rgba(228, 87, 46, .8);
}
.logo small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-mute);
  letter-spacing: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 15px;
  font-weight: 600;
}
.nav-links a { position: relative; padding: 4px 0; color: var(--ink-soft); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width .3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  background: var(--ink);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  transition: .25s;
}
.nav-cta:hover { background: var(--accent); transform: translateY(-2px); }
.nav-cta::after { display: none; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 20px;
  padding: 4px 12px;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- Hero（左右分栏） ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 70px;
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(44, 140, 138, .18), transparent 60%),
    radial-gradient(700px 380px at -10% 30%, rgba(242, 166, 90, .22), transparent 65%),
    var(--bg);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 85%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}
.hero-badge i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.hero h1 {
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.22;
  letter-spacing: 1px;
  margin: 22px 0 18px;
  font-weight: 900;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 10px;
  background: rgba(242, 166, 90, .45);
  z-index: -1;
}
.hero-sub {
  color: var(--ink-soft);
  font-size: 17px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  transition: .28s;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 16px 30px -16px rgba(228,87,46,.9); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-3px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-3px); }
.btn-teal { background: var(--ink); color: #fff; }
.btn-teal:hover { background: var(--teal); transform: translateY(-3px); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 54px;
  position: relative;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 14px;
  box-shadow: var(--shadow);
}
.stat b { display: block; font-size: 26px; color: var(--accent); font-weight: 900; line-height: 1.3; }
.stat span { font-size: 13px; color: var(--ink-mute); }

.hero-visual { position: relative; }
.hero-frame {
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 40px 70px -40px rgba(11,37,69,.65);
  background: #fff;
  transform: rotate(1.2deg);
}
.hero-frame img { aspect-ratio: 4 / 3.4; object-fit: cover; width: 100%; }
.float-card {
  position: absolute;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 16px;
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: floaty 5s ease-in-out infinite;
}
.float-card small { display: block; font-weight: 500; color: var(--ink-mute); font-size: 11px; }
.float-card.fc-1 { top: 18px; left: -34px; }
.float-card.fc-2 { bottom: 44px; right: -26px; animation-delay: 1.6s; }
.dot-ok { width: 30px; height: 30px; border-radius: 50%; background: var(--teal-soft); color: var(--teal); display: grid; place-items: center; font-size: 15px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- AI 平台滚动条 ---------- */
.platforms {
  background: var(--ink);
  color: #C9D6E4;
  padding: 18px 0;
  overflow: hidden;
}
.platforms .container { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.platforms strong { color: var(--gold); font-size: 14px; white-space: nowrap; }
.marquee { overflow: hidden; flex: 1; min-width: 260px; }
.marquee-track { display: flex; gap: 36px; width: max-content; animation: slide 26s linear infinite; }
.marquee-track span { font-size: 16px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; opacity: .9; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- 通用 Section ---------- */
.section { padding: 92px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: 1px;
}
.section-head p { margin-top: 14px; color: var(--ink-soft); font-size: 16px; }

/* ---------- 服务卡片（错位 bento） ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  position: relative;
  overflow: hidden;
  transition: .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(228,87,46,.4); }
.card-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
}
.card h3 { font-size: 20px; margin: 10px 0 10px; font-weight: 800; }
.card p { color: var(--ink-soft); font-size: 15px; }
.card ul { margin-top: 14px; display: grid; gap: 8px; }
.card ul li { font-size: 14px; color: var(--ink-soft); padding-left: 18px; position: relative; }
.card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--teal);
  transform: rotate(45deg);
}
.card.span3 { grid-column: span 3; }
.card.span2 { grid-column: span 2; }
.card.dark {
  background: linear-gradient(150deg, var(--ink), #143A63);
  color: #fff;
  border-color: transparent;
}
.card.dark p, .card.dark .card ul li { color: #B9C9DA; }
.card.dark .card-num { color: var(--gold); }
.card.tint { background: var(--teal-soft); }
.card-media { padding: 0; }
.card-media img { aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.card-media .card-body { padding: 24px 26px 28px; }

/* ---------- 技术优势（左侧粘性标题 + 右侧列表） ---------- */
.split {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 54px;
  align-items: start;
}
.sticky-head { position: sticky; top: 108px; }
.sticky-head h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 900; line-height: 1.3; }
.sticky-head p { margin-top: 16px; color: var(--ink-soft); }
.sticky-head .btn { margin-top: 26px; }
.tech-list { display: grid; gap: 16px; }
.tech-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: 14px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  align-items: start;
  transition: .3s;
}
.tech-item:hover { border-left-color: var(--accent); transform: translateX(6px); }
.tech-idx {
  width: 54px; height: 54px;
  border-radius: 14px;
  background: var(--bg-alt);
  color: var(--ink);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 17px;
}
.tech-item h4 { font-size: 17px; font-weight: 800; }
.tech-item p { color: var(--ink-soft); font-size: 14.5px; margin-top: 6px; }

/* ---------- 优势三列 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: .3s;
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature .icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 24px;
  background: var(--bg-alt);
  margin-bottom: 18px;
}
.feature h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.feature p { color: var(--ink-soft); font-size: 15px; }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.about-imgs { position: relative; }
.about-imgs .main {
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 34px 60px -36px rgba(11,37,69,.7);
}
.about-imgs .main img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.about-imgs .sub {
  position: absolute;
  right: -22px; bottom: -30px;
  width: 46%;
  border-radius: 16px;
  overflow: hidden;
  border: 6px solid var(--bg);
  box-shadow: var(--shadow);
}
.about-imgs .sub img { aspect-ratio: 1/1; object-fit: cover; width: 100%; }
.about-text h3 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 900; line-height: 1.35; }
.about-text h3 span { color: var(--accent); }
.about-text p { color: var(--ink-soft); margin-top: 16px; font-size: 15.5px; }
.facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 28px; }
.fact {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
}
.fact span { display: block; font-size: 12.5px; color: var(--ink-mute); letter-spacing: 1px; }
.fact b { font-size: 15.5px; font-weight: 800; }
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tag {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 999px;
}
.tag.on { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- 时间线（about） ---------- */
.timeline { position: relative; display: grid; gap: 26px; padding-left: 28px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 8px; bottom: 8px;
  width: 2px;
  background: repeating-linear-gradient(var(--line) 0 8px, transparent 8px 16px);
}
.tl-item { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px 26px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -28px; top: 28px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.tl-item b { color: var(--accent); font-size: 14px; letter-spacing: 1px; }
.tl-item h4 { font-size: 17.5px; margin: 4px 0 6px; font-weight: 800; }
.tl-item p { color: var(--ink-soft); font-size: 15px; }

/* ---------- 产品列表 ---------- */
.prod-list { display: grid; gap: 18px; }
.prod {
  display: grid;
  grid-template-columns: 260px 1fr auto;
  gap: 26px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  transition: .3s;
}
.prod:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(44,140,138,.5); }
.prod img { border-radius: 12px; aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.prod h3 { font-size: 20px; font-weight: 800; }
.prod p { color: var(--ink-soft); font-size: 15px; margin-top: 6px; }
.prod .go {
  white-space: nowrap;
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  padding: 10px 20px;
  border: 1px solid rgba(228,87,46,.4);
  border-radius: 999px;
  transition: .25s;
}
.prod .go:hover { background: var(--accent); color: #fff; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; max-width: 900px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font: inherit;
  font-weight: 700;
  font-size: 16.5px;
  color: var(--ink);
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.faq-q::after {
  content: "+";
  font-size: 22px;
  color: var(--accent);
  transition: .3s;
  line-height: 1;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  color: var(--ink-soft);
}
.faq-a p { padding: 0 24px 22px; font-size: 15.5px; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.contact-info { display: grid; gap: 16px; }
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: center;
}
.contact-card .ic {
  width: 46px; height: 46px;
  border-radius: 13px;
  background: var(--teal-soft);
  display: grid;
  place-items: center;
  font-size: 20px;
}
.contact-card span { font-size: 12.5px; color: var(--ink-mute); letter-spacing: 1px; }
.contact-card b { font-size: 17px; font-weight: 800; }
.form {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 34px 32px;
}
.form h3 { font-size: 22px; font-weight: 900; }
.form p { color: #A9BCD0; font-size: 14.5px; margin-top: 6px; }
.form-fields { display: grid; gap: 14px; margin-top: 22px; }
.form input, .form textarea {
  width: 100%;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px;
  padding: 13px 16px;
  color: #fff;
  font: inherit;
  font-size: 15px;
}
.form input::placeholder, .form textarea::placeholder { color: #8FA3B8; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--gold); background: rgba(255,255,255,.13); }
.form textarea { min-height: 110px; resize: vertical; }
.form .btn { width: 100%; justify-content: center; margin-top: 6px; }
.map {
  margin-top: 22px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
}
.map img { aspect-ratio: 16/7; object-fit: cover; width: 100%; filter: grayscale(.35); }
.map-label {
  position: absolute;
  left: 16px; bottom: 16px;
  background: #fff;
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: var(--shadow);
}

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--accent), var(--gold));
  color: #fff;
  border-radius: 24px;
  padding: 52px 46px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
  box-shadow: 0 30px 60px -34px rgba(228,87,46,.9);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 900; line-height: 1.35; }
.cta-band p { opacity: .95; margin-top: 8px; font-size: 15.5px; }
.cta-band .btn { background: #fff; color: var(--accent-dark); }
.cta-band .btn:hover { background: var(--ink); color: #fff; transform: translateY(-3px); }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--ink);
  color: #9FB2C6;
  padding: 62px 0 26px;
  font-size: 14.5px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 34px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer .logo { color: #fff; margin-bottom: 14px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; font-weight: 800; }
.footer li { margin-bottom: 9px; }
.footer a:hover { color: var(--gold); }
.footer-brand p { max-width: 320px; }
.footer-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.footer-badges span {
  font-size: 12px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  padding: 3px 11px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 22px;
  font-size: 13.5px;
  color: #7E93A9;
}
.footer-bottom a { margin-left: 16px; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 90;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--ink);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--accent); }

/* ---------- 页面内页头 ---------- */
.page-head {
  background:
    radial-gradient(700px 300px at 90% -20%, rgba(242,166,90,.28), transparent 60%),
    var(--ink);
  color: #fff;
  padding: 74px 0 66px;
}
.page-head .eyebrow { color: var(--gold); }
.page-head h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 900; letter-spacing: 1px; }
.page-head p { color: #A9BCD0; margin-top: 14px; max-width: 680px; }
.crumb { margin-top: 18px; font-size: 13.5px; color: #7E93A9; }
.crumb a:hover { color: var(--gold); }

/* ---------- 淡入动画 ---------- */
.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.fade-up.in { opacity: 1; transform: none; }

/* ---------- 手机号弹窗 ---------- */
.phone-modal {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(11, 37, 69, .55);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  transition: opacity .25s ease;
}
.phone-modal.show { opacity: 1; }
.phone-modal-box {
  position: relative;
  background: #fff;
  border-radius: 22px;
  padding: 40px 34px 34px;
  width: min(420px, 100%);
  text-align: center;
  box-shadow: 0 40px 80px -30px rgba(11, 37, 69, .7);
  transform: translateY(18px) scale(.96);
  transition: transform .3s cubic-bezier(.34, 1.4, .64, 1);
}
.phone-modal.show .phone-modal-box { transform: none; }
.phone-modal-close {
  position: absolute;
  top: 12px; right: 14px;
  width: 34px; height: 34px;
  border: none;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: .2s;
}
.phone-modal-close:hover { background: var(--accent); color: #fff; }
.phone-modal-icon {
  width: 62px; height: 62px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--teal-soft);
  display: grid;
  place-items: center;
  font-size: 28px;
}
.phone-modal-box h3 { font-size: 21px; font-weight: 900; }
.phone-modal-box p { color: var(--ink-soft); font-size: 14.5px; margin-top: 8px; }
.phone-modal-num {
  display: block;
  margin: 18px 0 4px;
  font-size: 34px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--accent);
}
.phone-modal-tip { display: block; font-size: 12.5px; color: var(--ink-mute); margin-bottom: 20px; }
.phone-modal-box .btn { width: 100%; justify-content: center; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid, .split, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .sticky-head { position: static; }
  .card.span3, .card.span2 { grid-column: span 6; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .float-card.fc-1 { left: 8px; }
  .float-card.fc-2 { right: 8px; }
  .prod { grid-template-columns: 200px 1fr; }
  .prod .go { grid-column: 2; justify-self: start; }
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 5%;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }
  .nav-links.open { max-height: 420px; padding: 10px 5% 18px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-toggle { display: block; }
  .nav-cta { margin-top: 8px; }
  .hero { padding: 56px 0 48px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .section { padding: 64px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .prod { grid-template-columns: 1fr; }
  .prod .go { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 26px; }
  .facts { grid-template-columns: 1fr; }
  .topbar .container { justify-content: center; }
}