/* ===================================================
   成都讯川科技有限公司 — 官网样式表
   纯静态，无外部 CDN 依赖
   =================================================== */

:root {
  --primary: #0E4C8A;
  --primary-dark: #0A3562;
  --primary-light: #1B6FB8;
  --accent: #F0A020;
  --navy: #0A2239;
  --navy-2: #12324F;
  --text: #1A2430;
  --muted: #5A6B7B;
  --line: #E3E9F0;
  --bg-soft: #F5F8FC;
  --white: #ffffff;
  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(10, 34, 57, .06);
  --shadow: 0 2px 14px rgba(10, 34, 57, .07);
  --shadow-lg: 0 14px 38px rgba(10, 34, 57, .13);
  --container: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

img, svg { 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; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--navy);
  color: rgba(255, 255, 255, .82);
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
  gap: 16px;
}
.topbar-contact { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.topbar-contact span { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.topbar-contact svg { width: 14px; height: 14px; stroke: var(--accent); flex-shrink: 0; }
.topbar-contact a:hover { color: var(--white); }
.topbar-note { color: rgba(255, 255, 255, .55); white-space: nowrap; }

/* ---------- 头部导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.header.scrolled { box-shadow: var(--shadow); }
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 10px rgba(14, 76, 138, .28);
  flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; stroke: #fff; fill: none; stroke-width: 1.9; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { font-size: 17px; font-weight: 700; color: var(--navy); letter-spacing: .3px; }
.brand-sub { font-size: 9.2px; color: var(--muted); letter-spacing: .35px; text-transform: uppercase; white-space: nowrap; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 9px 15px;
  font-size: 14.5px;
  font-weight: 500;
  color: #2A3A4A;
  border-radius: 6px;
  transition: color .18s, background .18s;
  white-space: nowrap;
}
.nav a:hover { color: var(--primary); background: #EEF4FB; }
.nav a.active { color: var(--primary); font-weight: 600; }
.nav a.active::after {
  content: ""; display: block; height: 2px; width: 16px;
  background: var(--accent); margin: 3px auto -4px; border-radius: 2px;
}

.header-cta {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--primary); color: #fff;
  padding: 10px 20px; border-radius: 6px;
  font-size: 14px; font-weight: 600;
  transition: background .2s, transform .2s;
  white-space: nowrap;
}
.header-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }
.header-cta svg { width: 15px; height: 15px; stroke: currentColor; }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 6px; }
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--navy);
  margin: 4px auto; border-radius: 2px; transition: .25s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 6px;
  font-size: 15px; font-weight: 600;
  transition: all .2s;
}
.btn svg { width: 16px; height: 16px; stroke: currentColor; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(14, 76, 138, .25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(14, 76, 138, .3); }
.btn-accent { background: var(--accent); color: #24180A; }
.btn-accent:hover { background: #D98D10; transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid rgba(255, 255, 255, .35); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .1); }
.btn-outline { border: 1.5px solid var(--line); color: var(--primary); background: #fff; }
.btn-outline:hover { border-color: var(--primary); background: #F4F9FE; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  background: linear-gradient(118deg, var(--navy) 0%, var(--primary-dark) 52%, #14548F 100%);
  color: #fff;
  overflow: hidden;
  padding: 86px 0 92px;
}
.hero-bg {
  position: absolute; inset: 0;
  opacity: .5;
  pointer-events: none;
}
.hero-bg svg { width: 100%; height: 100%; }
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 82% 18%, rgba(240, 160, 32, .16), transparent 62%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 60px;
  align-items: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 500;
  color: #BBD9F2;
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .16);
  padding: 6px 14px; border-radius: 30px;
  margin-bottom: 22px;
}
.hero-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 3px rgba(240, 160, 32, .25);
}
.hero h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -.4px;
  margin-bottom: 20px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-desc {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .8);
  max-width: 540px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-panel {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 14px;
  padding: 26px;
  backdrop-filter: blur(4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .22);
}
.panel-title {
  font-size: 12.5px; letter-spacing: 1.4px; text-transform: uppercase;
  color: rgba(255, 255, 255, .55); margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}
.panel-title::before { content: ""; width: 16px; height: 2px; background: var(--accent); }
.panel-list { display: grid; gap: 15px; }
.panel-item { display: flex; gap: 13px; align-items: flex-start; }
.panel-icon {
  width: 34px; height: 34px; border-radius: 8px; flex-shrink: 0;
  background: rgba(240, 160, 32, .14);
  border: 1px solid rgba(240, 160, 32, .28);
  display: flex; align-items: center; justify-content: center;
}
.panel-icon svg { width: 17px; height: 17px; stroke: var(--accent); fill: none; stroke-width: 1.9; }
.panel-item h4 { font-size: 14.5px; font-weight: 600; margin-bottom: 2px; }
.panel-item p { font-size: 13px; color: rgba(255, 255, 255, .62); line-height: 1.6; }

/* ---------- 数据条 ---------- */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 34px 0;
}
.stat {
  text-align: center;
  padding: 6px 12px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-size: 30px; font-weight: 700; color: var(--primary);
  line-height: 1.2; letter-spacing: -.5px;
}
.stat-num small { font-size: 16px; font-weight: 600; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---------- 通用区块 ---------- */
.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 700px; margin-bottom: 46px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 1.6px;
  text-transform: uppercase; color: var(--primary);
  margin-bottom: 13px;
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }
.section-head.center .eyebrow::before { display: none; }
.section-title {
  font-size: 31px; font-weight: 700; line-height: 1.35;
  color: var(--navy); letter-spacing: -.4px; margin-bottom: 14px;
}
.section-sub { font-size: 15.5px; color: var(--muted); line-height: 1.85; }

/* ---------- 产品卡片 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }

.card-icon {
  width: 52px; height: 52px; border-radius: 11px;
  background: #EDF4FC; border: 1px solid #D8E7F6;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  transition: background .25s;
}
.card-icon svg { width: 26px; height: 26px; stroke: var(--primary); fill: none; stroke-width: 1.6; }
.card:hover .card-icon { background: var(--primary); border-color: var(--primary); }
.card:hover .card-icon svg { stroke: #fff; }

.card h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--muted); line-height: 1.8; margin-bottom: 16px; }

.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-size: 12px; color: var(--primary);
  background: #F0F6FD; border: 1px solid #DCEAF8;
  padding: 3px 10px; border-radius: 4px;
}

.card-link {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 14px; font-weight: 600; color: var(--primary);
  margin-top: 18px;
}
.card-link svg { width: 15px; height: 15px; stroke: currentColor; transition: transform .2s; }
.card-link:hover svg { transform: translateX(3px); }

/* ---------- 解决方案 ---------- */
.sol-item {
  display: flex; gap: 18px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
  transition: border-color .2s, box-shadow .2s;
}
.sol-item:hover { border-color: #C9DEF3; box-shadow: var(--shadow); }
.sol-num {
  font-size: 13px; font-weight: 700; color: var(--primary);
  width: 38px; height: 38px; border-radius: 8px; flex-shrink: 0;
  background: #EDF4FC; display: flex; align-items: center; justify-content: center;
  letter-spacing: .5px;
}
.sol-item h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 7px; }
.sol-item p { font-size: 13.8px; color: var(--muted); line-height: 1.8; }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.adv { text-align: center; padding: 30px 18px; }
.adv-icon {
  width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 14px;
  background: linear-gradient(150deg, #EDF4FC, #DCEBF9);
  display: flex; align-items: center; justify-content: center;
}
.adv-icon svg { width: 27px; height: 27px; stroke: var(--primary); fill: none; stroke-width: 1.6; }
.adv h3 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.adv p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(112deg, var(--navy) 0%, var(--primary-dark) 60%, #14548F 100%);
  color: #fff; padding: 58px 0; position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; top: -80px;
  width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 160, 32, .18), transparent 68%);
}
.cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 36px; flex-wrap: wrap; position: relative; z-index: 2;
}
.cta-inner h2 { font-size: 26px; font-weight: 700; line-height: 1.45; margin-bottom: 8px; }
.cta-inner p { font-size: 14.5px; color: rgba(255, 255, 255, .72); }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy); color: rgba(255, 255, 255, .68); padding: 62px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: rgba(255, 255, 255, .45); }
.footer-desc {
  font-size: 13.5px; line-height: 1.9; margin: 18px 0 20px;
  color: rgba(255, 255, 255, .6); max-width: 300px;
}
.footer h4 {
  font-size: 14px; font-weight: 600; color: #fff;
  margin-bottom: 18px; letter-spacing: .3px;
}
.footer-links { display: grid; gap: 10px; }
.footer-links a { font-size: 13.5px; color: rgba(255, 255, 255, .62); transition: color .18s; }
.footer-links a:hover { color: var(--accent); }
.footer-contact { display: grid; gap: 13px; }
.footer-contact li { display: flex; gap: 10px; font-size: 13.5px; line-height: 1.7; }
.footer-contact svg { width: 15px; height: 15px; stroke: var(--accent); fill: none; stroke-width: 1.9; flex-shrink: 0; margin-top: 4px; }
.footer-contact a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(255, 255, 255, .45);
}
.footer-bottom a:hover { color: rgba(255, 255, 255, .8); }

/* 版权行 + 统一社会信用代码（双行，代码独立一行便于审核核验） */
.footer-legal { display: flex; flex-direction: column; gap: 5px; }
.footer-code {
  color: rgba(255, 255, 255, .58);
  letter-spacing: .45px;
  font-variant-numeric: tabular-nums;
}

/* 关于页：企业主体卡片内的登记代码 */
.entity-code {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: .2px;
}
.entity-code b { color: var(--primary); font-weight: 700; letter-spacing: .6px; }

/* ---------- 内页头部 ---------- */
.page-hero {
  background: linear-gradient(112deg, var(--navy) 0%, var(--primary-dark) 62%, #14548F 100%);
  color: #fff;
  padding: 54px 0 58px;
  position: relative;
  overflow: hidden;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: 33px; font-weight: 700; letter-spacing: -.3px; margin-bottom: 10px; }
.page-hero p { font-size: 15px; color: rgba(255, 255, 255, .74); max-width: 700px; line-height: 1.85; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: rgba(255, 255, 255, .5);
  margin-bottom: 16px;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb svg { width: 12px; height: 12px; stroke: currentColor; }

/* ---------- 关于页 ---------- */
.about-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 56px; align-items: center;
}
.about-text p { font-size: 15px; color: #3B4A5A; line-height: 1.95; margin-bottom: 16px; }
.about-figure {
  border-radius: 14px; overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, #F2F7FD, #E4EFFA);
  padding: 28px;
  box-shadow: var(--shadow);
}

.timeline { position: relative; padding-left: 26px; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--primary), #D6E6F6);
}
.timeline li { position: relative; padding-bottom: 26px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -26px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--primary);
}
.timeline .year { font-size: 13px; font-weight: 700; color: var(--primary); letter-spacing: .6px; }
.timeline h3 { font-size: 15.5px; font-weight: 600; color: var(--navy); margin: 3px 0 5px; }
.timeline p { font-size: 13.8px; color: var(--muted); line-height: 1.8; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
th, td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: #F2F7FC; font-weight: 600; color: var(--navy); font-size: 13.5px; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #FAFCFF; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 44px; align-items: start; }
.contact-cards { display: grid; gap: 16px; }
.contact-card {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px;
}
.contact-card .card-icon { width: 44px; height: 44px; margin-bottom: 0; border-radius: 10px; }
.contact-card .card-icon svg { width: 21px; height: 21px; }
.contact-card h3 { font-size: 14px; font-weight: 600; color: var(--muted); margin-bottom: 4px; font-weight: 500; }
.contact-card p { font-size: 15.5px; font-weight: 600; color: var(--navy); line-height: 1.6; }
.contact-card p.addr { font-size: 14px; font-weight: 500; line-height: 1.8; }
.contact-card p a:hover { color: var(--primary); }

.form-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: 12px; padding: 34px;
  box-shadow: var(--shadow);
}
.form-card h2 { font-size: 21px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.form-card > p { font-size: 13.5px; color: var(--muted); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 500; color: #34465A; margin-bottom: 7px; }
.field label .req { color: #D9534F; margin-left: 2px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 14px;
  border: 1px solid #D5DEE8; border-radius: 6px;
  font-size: 14px; font-family: inherit; color: var(--text);
  background: #fff; transition: border-color .18s, box-shadow .18s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 76, 138, .1);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; line-height: 1.7; }
.form-alert {
  display: none; margin-top: 16px; padding: 12px 16px;
  border-radius: 6px; font-size: 13.5px;
  background: #EAF6EE; border: 1px solid #C3E5CE; color: #1F6B3A;
}
.form-alert.show { display: block; }

/* ---------- 富文本页（隐私政策等） ---------- */
.prose { max-width: 860px; }
.prose h2 {
  font-size: 20px; font-weight: 700; color: var(--navy);
  margin: 38px 0 14px; padding-left: 13px;
  border-left: 3px solid var(--accent); line-height: 1.4;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 16px; font-weight: 600; color: var(--navy); margin: 22px 0 9px; }
.prose p { font-size: 14.5px; color: #3B4A5A; line-height: 1.95; margin-bottom: 13px; }
.prose ul { margin: 0 0 14px 0; padding-left: 4px; }
.prose ul li {
  position: relative; padding-left: 18px;
  font-size: 14.5px; color: #3B4A5A; line-height: 1.95; margin-bottom: 6px;
}
.prose ul li::before {
  content: ""; position: absolute; left: 2px; top: 12px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--primary-light);
}
.prose .meta { font-size: 13px; color: var(--muted); padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .header-cta { display: none; }
  .nav a { padding: 9px 11px; font-size: 14px; }
  .brand-name { font-size: 15.5px; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-panel { max-width: 560px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
}

@media (max-width: 860px) {
  .topbar { display: none; }
  .nav-toggle { display: block; }
  .header .container { height: 64px; }
  .header-cta { display: none; }
  .nav {
    position: fixed; top: 64px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 10px 20px 20px; gap: 2px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(10, 34, 57, .1);
    transform: translateY(-140%); transition: transform .3s ease;
    max-height: calc(100vh - 64px); overflow-y: auto;
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 13px 12px; border-radius: 6px; }
  .nav a.active::after { display: none; }
  .hero { padding: 58px 0 64px; }
  .hero h1 { font-size: 29px; }
  .hero-desc { font-size: 15px; }
  .section { padding: 58px 0; }
  .section-title { font-size: 25px; }
  .page-hero { padding: 40px 0 44px; }
  .page-hero h1 { font-size: 26px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; padding: 24px 0; }
  .stat { border-right: none; padding: 12px; }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .stat-num { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .footer-legal { align-items: center; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; }
  .hero-actions .btn { width: auto; flex: 1; }
}

@media (max-width: 480px) {
  .adv-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .container { padding: 0 18px; }
  .brand-name { font-size: 14px; }
  .brand-sub { font-size: 7.6px; letter-spacing: 0; }
  .brand-mark { width: 36px; height: 36px; }
}

@media print {
  .header, .topbar, .footer, .cta-band, .nav-toggle { display: none; }
}