/* =========================================================
   青岛宏微智能科技有限公司 · 企业官网
   设计系统 / Design System
   风格：简约大气 · 科技感
   ========================================================= */

:root {
  /* 品牌色 */
  --brand: #1f7bff;          /* 电光蓝 */
  --brand-2: #00e0c6;        /* 青绿点缀 */
  --brand-deep: #0b3aa3;

  /* 深色背景 */
  --navy: #07111f;
  --navy-2: #0b1a2e;
  --navy-3: #102843;

  /* 浅色背景 */
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --bg-soft-2: #eef3fa;

  /* 文字 */
  --ink: #0d1b2e;
  --ink-2: #34465c;
  --muted: #5e6f86;
  --muted-light: #9fb0c4;

  /* 线条 */
  --line: #e4ebf3;
  --line-dark: rgba(255, 255, 255, 0.10);

  /* 圆角 / 阴影 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --shadow-sm: 0 4px 16px rgba(13, 27, 46, 0.06);
  --shadow-md: 0 14px 40px rgba(13, 27, 46, 0.10);
  --shadow-lg: 0 28px 70px rgba(11, 26, 46, 0.18);

  /* 字体 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;

  --maxw: 1200px;
  --nav-h: 72px;
}

/* ===================== Reset ===================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
section { position: relative; }

/* ===================== Layout ===================== */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 104px 0;
}
.section--soft { background: var(--bg-soft); }
.section--dark {
  background: radial-gradient(120% 100% at 50% 0%, var(--navy-2) 0%, var(--navy) 60%);
  color: #eaf2ff;
  overflow: hidden;
}
.section--dark h1,
.section--dark h2,
.section--dark h3 { color: #fff; }
.section--dark p { color: var(--muted-light); }

.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  border-radius: 2px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  color: var(--muted);
}
.section--dark .section-sub { color: var(--muted-light); }

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(120deg, var(--brand), var(--brand-deep));
  color: #fff;
  box-shadow: 0 10px 26px rgba(31, 123, 255, 0.32);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(31, 123, 255, 0.42);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #eaf2ff;
  border-color: rgba(255, 255, 255, 0.18);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}
.btn-outline {
  background: #fff;
  color: var(--brand);
  border-color: var(--line);
}
.btn-outline:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn .arrow { transition: transform 0.2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ===================== Navbar ===================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 30px rgba(13, 27, 46, 0.07);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand .logo {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}
.brand small {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-top: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  position: relative;
  padding: 9px 15px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-links a:hover { color: var(--brand); }
.nav-links a.active {
  color: var(--brand);
  background: rgba(31, 123, 255, 0.08);
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero {
  position: relative;
  background: radial-gradient(120% 120% at 80% -10%, #0e2c52 0%, var(--navy) 55%);
  color: #eaf2ff;
  overflow: hidden;
  padding: 120px 0 110px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 180, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 180, 255, 0.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  width: 620px;
  height: 620px;
  right: -160px;
  top: -200px;
  background: radial-gradient(circle, rgba(31, 123, 255, 0.45), transparent 60%);
  filter: blur(20px);
  pointer-events: none;
}
.hero-glow.two {
  width: 420px;
  height: 420px;
  left: -120px;
  bottom: -180px;
  background: radial-gradient(circle, rgba(0, 224, 198, 0.32), transparent 60%);
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 13px;
  color: #cfe0ff;
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 0 4px rgba(0, 224, 198, 0.2);
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  color: #fff;
  line-height: 1.12;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--brand-2), var(--brand));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: 18px;
  color: #b9cbe6;
  max-width: 540px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 38px; }
.hero-stats {
  display: flex;
  gap: 38px;
  flex-wrap: wrap;
}
.hero-stats .num {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  font-family: var(--mono);
}
.hero-stats .lbl { font-size: 13px; color: var(--muted-light); }

/* Hero visual card */
.hero-visual {
  position: relative;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(31, 123, 255, 0.18), rgba(0, 224, 198, 0.10));
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 26px;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-lg);
}
.hero-visual .chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(7, 17, 31, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 12px;
  font-size: 14px;
  color: #d6e4fb;
}
.hero-visual .chip .v { font-family: var(--mono); color: #fff; font-weight: 700; }
.hero-visual .chip .v.hi { color: var(--brand-2); }
.hero-visual .ring {
  margin: 8px auto 4px;
  width: 168px;
  height: 168px;
}
.hero-visual .cap {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted-light);
  letter-spacing: 0.04em;
}

/* ===================== Grid / Cards ===================== */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 30px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(31, 123, 255, 0.3);
}
.card .ic {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(31, 123, 255, 0.12), rgba(0, 224, 198, 0.12));
  color: var(--brand);
  margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* Feature list */
.feature {
  display: flex;
  gap: 16px;
  align-items|items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.feature:last-child { border-bottom: 0; }
.feature .tick {
  flex: 0 0 auto;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: rgba(31, 123, 255, 0.1);
  color: var(--brand);
  display: grid; place-items: center;
  font-size: 15px; font-weight: 700;
}
.feature h4 { font-size: 16px; margin-bottom: 4px; }
.feature p { font-size: 14.5px; color: var(--muted); }

/* ===================== Split block ===================== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split .visual {
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--navy-2), var(--navy));
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 34px;
  min-height: 320px;
  position: relative;
  overflow: hidden;
}
.split .visual .glow {
  position: absolute;
  width: 300px; height: 300px;
  right: -80px; top: -80px;
  background: radial-gradient(circle, rgba(0,224,198,0.3), transparent 60%);
}

/* ===================== Stats band ===================== */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stats-band .item {
  padding: 28px 16px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.stats-band .n {
  font-size: 40px;
  font-weight: 800;
  font-family: var(--mono);
  color: #fff;
  background: linear-gradient(120deg, #fff, var(--brand-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats-band .t { color: var(--muted-light); font-size: 14.5px; margin-top: 6px; }

/* ===================== Edge product cards ===================== */
.product-card {
  position: relative;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  padding: 30px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.product-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.product-card .tops {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brand-deep);
  background: rgba(31, 123, 255, 0.1);
  padding: 5px 11px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.product-card h3 { font-size: 21px; margin-bottom: 6px; }
.product-card .model { font-size: 13px; color: var(--muted); font-family: var(--mono); margin-bottom: 18px; }
.product-card .power {
  display: flex; align-items: baseline; gap: 6px;
  margin-bottom: 18px;
}
.product-card .power b {
  font-size: 38px; font-family: var(--mono); font-weight: 800;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.product-card .power span { font-size: 14px; color: var(--muted); }
.specs { margin: 0 0 22px; }
.specs li {
  display: flex; justify-content: space-between;
  padding: 9px 0; border-bottom: 1px dashed var(--line);
  font-size: 14px;
}
.specs li:last-child { border-bottom: 0; }
.specs .k { color: var(--muted); }
.specs .v { font-weight: 600; color: var(--ink); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12.5px; color: var(--ink-2);
  background: var(--bg-soft); border: 1px solid var(--line);
  padding: 4px 11px; border-radius: 999px;
}

/* ===================== Solution cards ===================== */
.sol-card {
  position: relative;
  border-radius: var(--r-lg);
  padding: 34px 30px;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.sol-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.sol-card .idx {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 14px;
  display: block;
}
.sol-card h3 { font-size: 21px; margin-bottom: 12px; }
.sol-card p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.sol-card ul.points { display: grid; gap: 9px; }
.sol-card ul.points li {
  position: relative; padding-left: 22px;
  font-size: 14.5px; color: var(--ink-2);
}
.sol-card ul.points li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
}

/* ===================== Timeline ===================== */
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 18px; top: 6px; bottom: 6px;
  width: 2px; background: var(--line);
}
.tl-item { position: relative; padding: 0 0 34px 56px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item .dot {
  position: absolute; left: 9px; top: 4px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 4px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(31,123,255,0.12);
}
.tl-item .year { font-family: var(--mono); font-weight: 700; color: var(--brand); font-size: 15px; }
.tl-item h4 { font-size: 18px; margin: 4px 0 6px; }
.tl-item p { color: var(--muted); font-size: 15px; }

/* ===================== Contact ===================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; }
.contact-info { display: grid; gap: 16px; }
.info-card {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 22px; border-radius: var(--r-md);
  background: #fff; border: 1px solid var(--line);
}
.info-card .ic {
  width: 46px; height: 46px; border-radius: 12px; flex: 0 0 auto;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
}
.info-card h4 { font-size: 15px; color: var(--muted); font-weight: 600; margin-bottom: 4px; }
.info-card p { font-size: 16px; color: var(--ink); font-weight: 600; }

.form-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 34px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; color: var(--ink-2); }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; font-family: inherit; font-size: 15px;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--bg-soft); color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(31, 123, 255, 0.12); background: #fff;
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 4px; }
.form-success {
  display: none; margin-top: 16px; padding: 14px 16px;
  border-radius: var(--r-sm); background: rgba(0, 224, 198, 0.12);
  color: var(--brand-deep); font-size: 14.5px; font-weight: 600;
  border: 1px solid rgba(0, 224, 198, 0.4);
}
.form-success.show { display: block; }

/* ===================== CTA ===================== */
.cta {
  position: relative;
  border-radius: var(--r-lg);
  padding: 64px 48px;
  text-align: center;
  background: radial-gradient(120% 140% at 50% 0%, var(--navy-3), var(--navy));
  color: #fff;
  overflow: hidden;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120,180,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(70% 80% at 50% 40%, #000, transparent 75%);
}
.cta h2 { color: #fff; font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 14px; position: relative; }
.cta p { color: var(--muted-light); max-width: 560px; margin: 0 auto 28px; position: relative; }
.cta .hero-actions { justify-content: center; margin-bottom: 0; position: relative; }

/* ===================== Footer ===================== */
.footer {
  background: var(--navy);
  color: #aebfd4;
  padding: 64px 0 28px;
  font-size: 14.5px;
}
.footer .top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer .brand { color: #fff; margin-bottom: 16px; }
.footer .brand small { color: var(--muted-light); }
.footer p.desc { color: var(--muted-light); max-width: 320px; }
.footer h5 {
  color: #fff; font-size: 15px; margin-bottom: 16px; letter-spacing: 0.02em;
}
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: #aebfd4; transition: color 0.2s ease; }
.footer ul a:hover { color: var(--brand-2); }
.footer .bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding-top: 22px; color: var(--muted-light); font-size: 13.5px;
}
.footer .socials { display: flex; gap: 10px; }
.footer .socials a {
  width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 0.2s ease, transform 0.2s ease;
}
.footer .socials a:hover { background: rgba(31, 123, 255, 0.25); transform: translateY(-2px); }

/* ===================== Reveal animation ===================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  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; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===================== Breadcrumb / sub-hero ===================== */
.page-hero {
  position: relative;
  background: radial-gradient(120% 120% at 80% -10%, #0e2c52 0%, var(--navy) 55%);
  color: #eaf2ff;
  padding: 120px 0 64px;
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120,180,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,0.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(80% 70% at 50% 20%, #000 30%, transparent 80%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb { font-size: 13px; color: var(--muted-light); margin-bottom: 14px; }
.page-hero .crumb a:hover { color: var(--brand-2); }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4.4vw, 50px); margin-bottom: 14px; }
.page-hero p { color: #b9cbe6; max-width: 580px; font-size: 17px; }

/* ===================== Responsive ===================== */
@media (max-width: 960px) {
  .section { padding: 76px 0; }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 460px; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer .top { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-cta .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 14px 24px; gap: 4px; box-shadow: var(--shadow-md);
  }
  .nav.open .nav-links a { padding: 12px 14px; }
}
@media (max-width: 600px) {
  .container { padding: 0 18px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .footer .top { grid-template-columns: 1fr; }
  .cta { padding: 44px 24px; }
  .section-head { margin-bottom: 38px; }
}