/* ============================================================
   Toptech Group — corporate site stylesheet
   Palette: deep navy + warm amber accent, clean B2B corporate
   ============================================================ */

:root {
  --navy-900: #0a1f33;
  --navy-800: #0e2a47;
  --navy-700: #123a5f;
  --navy-600: #1a4d7a;
  --amber: #c9a24b;
  --amber-dark: #a8822f;
  --ink: #1a2433;
  --slate: #5a6572;
  --line: #e6eaf0;
  --bg: #f5f7fa;
  --bg-soft: #f0f4f8;
  --white: #ffffff;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(10, 31, 51, 0.06);
  --shadow-md: 0 10px 30px rgba(10, 31, 51, 0.10);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans", sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--navy-900); }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-dark);
  margin-bottom: 14px;
}
.section-title { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.01em; }
.section-sub { color: var(--slate); font-size: 17px; margin-top: 12px; max-width: 720px; }
.lead { color: var(--slate); font-size: 17px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--amber); color: var(--navy-900); }
.btn-primary:hover { background: var(--amber-dark); color: #fff; }
.btn-outline { border-color: rgba(255,255,255,0.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-outline-dark { border-color: var(--navy-700); color: var(--navy-800); }
.btn-outline-dark:hover { background: var(--navy-800); color: #fff; }
.btn-sm { padding: 10px 20px; font-size: 13px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
  color: var(--amber); font-weight: 800; font-size: 13px;
  display: inline-flex; align-items: center; justify-content: center; letter-spacing: 0;
}
.brand-text { font-weight: 800; font-size: 18px; color: var(--navy-900); letter-spacing: -0.01em; }
.brand-text em { font-style: normal; color: var(--amber-dark); font-weight: 600; }

.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.main-nav a {
  padding: 8px 13px; border-radius: 8px; font-size: 14px; font-weight: 500;
  color: var(--slate); transition: all 0.15s ease;
}
.main-nav a:hover { color: var(--navy-900); background: var(--bg-soft); }
.main-nav a.active { color: var(--navy-900); font-weight: 700; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  border: 1px solid var(--line); background: var(--white); color: var(--navy-800);
  padding: 8px 12px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.lang-toggle:hover { border-color: var(--amber); color: var(--amber-dark); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--navy-900); margin: 4px 0; border-radius: 2px; transition: all 0.2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(201,162,75,0.28), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(26,77,122,0.55), transparent 60%),
    linear-gradient(135deg, var(--navy-900), var(--navy-700));
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(180deg, #000, transparent 85%);
}
.hero-inner { position: relative; z-index: 1; padding: 108px 0 96px; max-width: 800px; }
.hero .eyebrow { color: var(--amber); }
.hero h1 { color: #fff; font-size: clamp(34px, 5.4vw, 60px); letter-spacing: -0.02em; }
.hero h1 .accent { color: var(--amber); }
.hero-sub { margin-top: 20px; font-size: 19px; color: rgba(255,255,255,0.82); max-width: 640px; }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-tags { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span {
  font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  padding: 7px 14px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.22); color: rgba(255,255,255,0.85);
}

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg); }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .section-sub { margin-left: auto; margin-right: auto; }

/* ---------- Stat strip ---------- */
.stat-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 40px 0; }
.stat { text-align: center; }
.stat b { font-size: 34px; font-weight: 800; color: var(--navy-800); letter-spacing: -0.02em; }
.stat span { display: block; color: var(--slate); font-size: 13px; margin-top: 4px; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: all 0.22s ease; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.card-icon {
  width: 48px; height: 48px; border-radius: 12px; margin-bottom: 20px;
  background: var(--bg-soft); color: var(--navy-700);
  display: inline-flex; align-items: center; justify-content: center; font-size: 22px;
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--slate); font-size: 14.5px; }
.card .card-link { margin-top: auto; padding-top: 18px; color: var(--amber-dark); font-size: 14px; font-weight: 600; }
.card .card-link:hover { text-decoration: underline; }

/* business cards on home (5 items → wider grid) */
.card-grid.business { grid-template-columns: repeat(3, 1fr); }

/* ---------- Values ---------- */
.value-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.value {
  display: flex; gap: 16px; padding: 24px; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.value .num { font-weight: 800; color: var(--amber-dark); font-size: 15px; flex-shrink: 0; width: 26px; }
.value h3 { font-size: 17px; margin-bottom: 6px; }
.value p { color: var(--slate); font-size: 14.5px; }

/* ---------- Regions / global ---------- */
.region-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.region {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px;
}
.region h3 { font-size: 19px; margin-bottom: 6px; }
.region .region-note { color: var(--amber-dark); font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.region ul li { position: relative; padding: 6px 0 6px 18px; color: var(--slate); font-size: 14.5px; border-bottom: 1px dashed var(--line); }
.region ul li:last-child { border-bottom: 0; }
.region ul li::before { content: ""; position: absolute; left: 0; top: 15px; width: 6px; height: 6px; border-radius: 50%; background: var(--amber); }

/* ---------- Partners ---------- */
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ---------- Inner page hero ---------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 90% -20%, rgba(201,162,75,0.22), transparent 60%),
    linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff; padding: 72px 0;
}
.page-hero h1 { color: #fff; font-size: clamp(30px, 4.4vw, 46px); }
.page-hero p { margin-top: 14px; color: rgba(255,255,255,0.8); font-size: 17px; max-width: 720px; }
.page-hero .eyebrow { color: var(--amber); }

/* ---------- Prose (business sub pages) ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 24px; margin: 40px 0 14px; }
.prose p { color: var(--slate); margin-bottom: 16px; }
.prose ul { margin: 0 0 20px; }
.prose ul li { position: relative; padding: 8px 0 8px 22px; color: var(--slate); }
.prose ul li::before { content: "→"; position: absolute; left: 0; color: var(--amber-dark); font-weight: 700; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
  border-radius: var(--radius); color: #fff; padding: 54px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; font-size: 26px; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,0.8); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info .info-row { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-info .info-row:last-child { border-bottom: 0; }
.info-row .ico { font-size: 20px; width: 28px; }
.info-row b { display: block; font-size: 15px; color: var(--navy-900); }
.info-row span, .info-row a { color: var(--slate); font-size: 14.5px; }
.info-row a:hover { color: var(--amber-dark); }

.form-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; color: var(--navy-900); margin-bottom: 7px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px;
  font-family: inherit; font-size: 15px; color: var(--ink); background: var(--bg-soft);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none; border-color: var(--amber); background: #fff;
}
.form-note { font-size: 12.5px; color: var(--slate); margin-top: 12px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,0.75); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr 1.4fr; gap: 34px; }
.brand-light .brand-text { color: #fff; }
.footer-brand p { margin-top: 14px; font-size: 14px; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 16px; }
.footer-col a { display: block; padding: 5px 0; font-size: 14px; color: rgba(255,255,255,0.72); }
.footer-col a:hover { color: var(--amber); }
.footer-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,0.12);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px;
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .card-grid, .card-grid.business, .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px 20px 20px;
    display: none; gap: 2px; margin-left: 0;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 12px; font-size: 15px; }
  .nav-toggle { display: block; }
  .header-actions .btn-sm { display: none; }
  body.nav-open { overflow: hidden; }
}
@media (max-width: 600px) {
  .card-grid, .card-grid.business, .partner-grid, .region-grid, .value-list { grid-template-columns: 1fr; }
  .hero-inner { padding: 72px 0 68px; }
  .section { padding: 60px 0; }
  .cta-band { padding: 36px 26px; }
  .footer-grid { grid-template-columns: 1fr; }
}