/* ==========================================================================
   沄贸至创 / YMZC — site styles
   Palette: Graphite & Silver (from logo)
   ========================================================================== */

:root {
  /* Graphite */
  --graphite-900: #292F36;
  --graphite-800: #3C434C;
  --graphite-700: #464E58;
  --graphite-600: #626B77;
  --graphite-500: #7B8590;
  /* Silver */
  --silver-400: #99A1AB;
  --silver-300: #B5BCC5;
  --silver-200: #C6CDD4;
  /* Surfaces & text */
  --bg-light: #F4F5F7;
  --bg-dark: #16181C;
  --text-on-light: #2A3038;
  --text-on-dark: #E8ECF0;

  /* Derived tokens */
  --text-muted: var(--graphite-600);
  --text-muted-dark: var(--silver-400);
  --line: rgba(41, 47, 54, 0.12);
  --line-strong: rgba(41, 47, 54, 0.22);
  --line-dark: rgba(232, 236, 240, 0.12);
  --surface: rgba(255, 255, 255, 0.6);
  --surface-strong: rgba(255, 255, 255, 0.85);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;

  --radius: 6px;
  --radius-lg: 10px;
  --container: 1160px;
  --header-h: 72px;
  --shadow-soft: 0 1px 2px rgba(22, 24, 28, 0.04), 0 8px 24px rgba(22, 24, 28, 0.06);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- Reset / base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-on-light);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[lang="zh-CN"] body { line-height: 1.8; letter-spacing: 0.01em; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 600; color: var(--graphite-900); letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; }

:focus-visible { outline: 2px solid var(--graphite-600); outline-offset: 3px; border-radius: 2px; }

.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 100;
  padding: 8px 14px; background: var(--graphite-900); color: var(--text-on-dark);
  border-radius: var(--radius); text-decoration: none; transition: top .2s;
}
.skip-link:focus { top: 12px; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(244, 245, 247, 0.86);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.header-right { display: flex; align-items: center; gap: 28px; }
[hidden] { display: none !important; }
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { height: 44px; width: auto; }

.nav-wrap { display: flex; align-items: center; gap: 28px; }
.site-nav ul { list-style: none; display: flex; gap: 4px; }
.site-nav a {
  position: relative; display: block; padding: 8px 12px;
  font-size: 15px; color: var(--graphite-700); text-decoration: none;
  transition: color .2s;
}
.site-nav a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 1px;
  background: var(--graphite-900); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.site-nav a:hover { color: var(--graphite-900); }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--graphite-900); font-weight: 500; }

.lang-switch {
  display: inline-flex; border: 1px solid var(--line-strong); border-radius: 999px; padding: 2px;
  background: var(--surface);
}
.lang-switch button {
  appearance: none; border: 0; background: transparent; cursor: pointer;
  font: inherit; font-size: 13px; line-height: 1; padding: 7px 11px; border-radius: 999px;
  color: var(--graphite-600); transition: background .2s, color .2s;
}
.lang-switch button[aria-pressed="true"] { background: var(--graphite-900); color: var(--text-on-dark); }
.lang-switch button:not([aria-pressed="true"]):hover { color: var(--graphite-900); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none; appearance: none; background: transparent; cursor: pointer;
  width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  align-items: center; justify-content: center; padding: 0;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  display: block; width: 18px; height: 1.5px; background: var(--graphite-900);
  transition: transform .3s var(--ease), opacity .2s;
}
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 12px 22px;
  font: inherit; font-size: 15px; font-weight: 500; line-height: 1.2;
  text-decoration: none; cursor: pointer; border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s, border-color .25s, transform .25s var(--ease);
}
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
.btn-solid { background: var(--graphite-900); color: var(--text-on-dark); }
.btn-solid:hover { background: var(--graphite-800); }
.btn-outline { border-color: var(--line-strong); color: var(--graphite-900); background: transparent; }
.btn-outline:hover { border-color: var(--graphite-900); }
.on-dark .btn-solid { background: var(--text-on-dark); color: var(--graphite-900); }
.on-dark .btn-solid:hover { background: #fff; }
.on-dark .btn-outline { border-color: rgba(232, 236, 240, 0.3); color: var(--text-on-dark); }
.on-dark .btn-outline:hover { border-color: var(--text-on-dark); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.text-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--graphite-900); font-weight: 500; text-decoration: none;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 2px;
  transition: border-color .2s;
}
.text-link:hover { border-color: var(--graphite-900); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; margin-bottom: 14px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--graphite-600);
}
html[lang="zh-CN"] .eyebrow { letter-spacing: 0.2em; }
.section-title { font-size: clamp(26px, 3.2vw, 36px); }
.section-lead { margin-top: 14px; font-size: 17px; color: var(--text-muted); }

/* Dark band (hero, CTA, footer) */
.on-dark {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(123, 133, 144, 0.18), transparent 60%),
    radial-gradient(800px 400px at -10% 110%, rgba(70, 78, 88, 0.35), transparent 60%),
    linear-gradient(180deg, #1B1E23 0%, var(--bg-dark) 100%);
  color: var(--text-on-dark);
}
.on-dark h1, .on-dark h2, .on-dark h3 { color: var(--text-on-dark); }
.on-dark .eyebrow { color: var(--silver-400); }
.on-dark .section-lead, .on-dark .muted { color: var(--silver-300); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 120px 0 112px; }
.hero::before {
  /* fine grid lines for texture */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(232, 236, 240, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 236, 240, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 70%);
  mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 70%);
}
.hero .container { position: relative; }
.hero h1 { font-size: clamp(34px, 5.2vw, 58px); font-weight: 600; letter-spacing: -0.02em; max-width: 880px; }
.hero .hero-lead { margin-top: 22px; max-width: 680px; font-size: clamp(16px, 1.6vw, 19px); color: var(--silver-300); }
.hero .btn-row { margin-top: 40px; }
.hero-sm { padding: 96px 0 80px; }
.hero-sm h1 { font-size: clamp(30px, 4.4vw, 48px); }
.hero-brand { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.hero-rule { margin-top: 56px; height: 1px; background: linear-gradient(90deg, rgba(232,236,240,.3), transparent 70%); }

/* ---------- Business lines (equal) ---------- */
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.biz-card {
  position: relative; display: flex; flex-direction: column;
  padding: 40px; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow-soft);
  transition: border-color .3s, transform .4s var(--ease), box-shadow .4s var(--ease);
}
.biz-card::before {
  content: ""; position: absolute; left: 40px; right: 40px; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--graphite-700), var(--silver-200));
  border-radius: 0 0 2px 2px;
}
.biz-card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: 0 2px 4px rgba(22,24,28,.04), 0 16px 40px rgba(22,24,28,.08); }
.biz-icon {
  width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 24px;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--graphite-800);
  background: linear-gradient(145deg, #fff, var(--bg-light));
}
.biz-icon svg { width: 26px; height: 26px; }
.biz-card h3 { font-size: 24px; }
.biz-card .biz-sub { margin-top: 4px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--graphite-500); }
.biz-card p.biz-desc { margin-top: 16px; color: var(--text-muted); }
.check-list { list-style: none; margin-top: 24px; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 26px; }
.check-list li::before {
  content: ""; position: absolute; left: 2px; top: .62em; width: 12px; height: 1px; background: var(--graphite-600);
}
.biz-actions { margin-top: auto; padding-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Generic cards / grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card {
  padding: 32px; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
}
.card h3 { font-size: 19px; }
.card p { margin-top: 10px; color: var(--text-muted); }
.card .num {
  display: block; margin-bottom: 18px; font-size: 13px; font-weight: 600; letter-spacing: .12em;
  color: var(--graphite-500); font-variant-numeric: tabular-nums;
}
.card .check-list { margin-top: 18px; font-size: 15px; }

/* Process steps with connecting line */
.steps { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; list-style: none; margin: 0; padding: 0; }
.mt-48 { margin-top: 48px; }
.mt-32 { margin-top: 32px; }
.step { position: relative; padding-top: 36px; }
.step::before {
  content: ""; position: absolute; top: 7px; left: 0; right: -24px; height: 1px;
  background: linear-gradient(90deg, var(--silver-300), var(--line));
}
.step:last-child::before { right: 0; background: linear-gradient(90deg, var(--silver-300), transparent); }
.step::after {
  content: ""; position: absolute; top: 0; left: 0; width: 15px; height: 15px; border-radius: 50%;
  background: var(--bg-light); border: 1px solid var(--graphite-600);
  box-shadow: inset 0 0 0 3px var(--bg-light), inset 0 0 0 8px var(--graphite-700);
}
.step .card { height: 100%; }

/* Category chips */
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; }
.chips li {
  padding: 10px 18px; border: 1px solid var(--line-strong); border-radius: 999px;
  background: var(--surface-strong); font-size: 15px; color: var(--graphite-800);
}
.note { margin-top: 20px; font-size: 14px; color: var(--text-muted); }

/* Key-value table (about) */
.info-table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.info-table th, .info-table td { padding: 16px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.info-table th { width: 34%; padding-right: 24px; font-weight: 500; color: var(--graphite-600); }
.info-table tr:first-child th, .info-table tr:first-child td { border-top: 1px solid var(--line); }

/* Five-step process (trade & software) */
.steps-5 { grid-template-columns: repeat(5, 1fr); gap: 20px; }
.steps-5 .step::before { right: -20px; }
.steps-5 .card { padding: 26px 22px; }
.steps-5 .card h3 { font-size: 17px; }
.steps-5 .card p { font-size: 15px; }

/* Scenario cards ("What we can do for you") */
.scenario { display: flex; flex-direction: column; }
.scenario .tag {
  align-self: flex-start; margin-bottom: 16px; padding: 4px 10px;
  border: 1px solid var(--line-strong); border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--graphite-600);
}
.scenario-flow { margin: 16px 0 0; }
.scenario-flow dt {
  font-size: 12.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--graphite-500);
}
.scenario-flow dd { margin: 6px 0 0; color: var(--text-muted); }
.scenario-flow dd + dt { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.scenario-flow dd + dt::before { content: "→ "; color: var(--graphite-700); }
.scenario-flow dd:last-child { color: var(--text-on-light); }

/* Long-form text (about profile, privacy policy) */
.prose { max-width: 760px; font-size: 16.5px; }
.prose p + p { margin-top: 16px; }
.prose h2 { margin-top: 44px; font-size: 21px; }
.prose h2:first-child { margin-top: 0; }
.prose h2 + p, .prose h2 + ul { margin-top: 12px; }
.prose ul { margin-top: 12px; padding-left: 22px; display: grid; gap: 8px; }
.prose p + ul, .prose ul + p { margin-top: 12px; }
.prose a { text-underline-offset: 3px; }
.prose .lead { font-size: 18px; color: var(--graphite-800); }

/* ---------- CTA band ---------- */
.cta-band { padding: 88px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(24px, 3vw, 34px); max-width: 620px; }
.cta-inner p { margin-top: 12px; max-width: 620px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: start; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form .full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; color: var(--graphite-800); }
.field .req { color: var(--graphite-500); margin-left: 2px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font: inherit; font-size: 15px; color: var(--text-on-light);
  background: var(--surface-strong); border: 1px solid var(--line-strong); border-radius: var(--radius);
  transition: border-color .2s, box-shadow .2s;
}
.field select { appearance: none; -webkit-appearance: none; padding-right: 40px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--graphite-600) 50%), linear-gradient(135deg, var(--graphite-600) 50%, transparent 50%);
  background-position: calc(100% - 20px) 52%, calc(100% - 15px) 52%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.field textarea { min-height: 160px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--graphite-700); box-shadow: 0 0 0 3px rgba(98, 107, 119, 0.15);
}
.field input:user-invalid, .field textarea:user-invalid { border-color: #9A5A5A; }
.form-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-hint { font-size: 13.5px; color: var(--text-muted); }
.form-status {
  grid-column: 1 / -1; display: none;
  padding: 14px 18px; border: 1px solid var(--line-strong); border-left: 3px solid var(--graphite-700); border-radius: var(--radius);
  background: rgba(198, 205, 212, 0.22); color: var(--graphite-800); font-size: 15px;
}
.form-status.is-visible { display: block; animation: fadeUp .4s var(--ease); }

.contact-aside .card + .card { margin-top: 20px; }
.contact-list { list-style: none; margin-top: 16px; display: grid; gap: 14px; font-size: 15px; }
.contact-list li { display: grid; grid-template-columns: 110px 1fr; gap: 12px; }
.contact-list .k { color: var(--graphite-600); }
.contact-list a, .form-consent a, .contact-aside p a { color: var(--graphite-900); text-underline-offset: 3px; }
.form-consent { font-size: 13.5px; color: var(--text-muted); }
.email-copy {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-top: 16px; padding: 12px 14px;
  border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface-strong);
}
.email-copy a { font-size: 16px; font-weight: 600; color: var(--graphite-900); text-decoration: none; word-break: break-all; }
.email-copy a:hover { text-decoration: underline; text-underline-offset: 3px; }
.btn-sm { min-height: 36px; padding: 7px 14px; font-size: 14px; }

/* ---------- Footer ---------- */
.site-footer { padding: 72px 0 32px; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; }
.footer-brand img { height: 48px; width: auto; }
.footer-brand p { margin-top: 18px; max-width: 380px; color: var(--silver-400); }
.footer-brand .footer-name { margin-top: 18px; color: var(--silver-200); }
.footer-brand .footer-name + p { margin-top: 8px; }
.footer-info { list-style: none; display: grid; gap: 10px; color: var(--silver-400); }
.footer-info a { color: var(--silver-200); text-underline-offset: 3px; }
.footer-info a:hover { color: var(--text-on-dark); }
.site-footer h4 { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--silver-300); font-weight: 600; margin-bottom: 16px; }
.footer-links { list-style: none; display: grid; gap: 10px; }
.footer-links a { color: var(--silver-400); text-decoration: none; transition: color .2s; }
.footer-links a:hover { color: var(--text-on-dark); }
.footer-bottom {
  margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--graphite-500);
}
.footer-bottom .legal-name { color: var(--silver-300); }
.footer-bottom a { color: var(--silver-400); text-decoration: none; transition: color .2s; }
.footer-bottom a:hover { color: var(--text-on-dark); }

/* ---------- Motion ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .reveal-d1 { transition-delay: .08s; }
.js .reveal-d2 { transition-delay: .16s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  /* Five-step process switches to the vertical timeline earlier */
  .steps-5 { grid-template-columns: 1fr; gap: 16px; }
  .steps-5 .step { padding-top: 0; padding-left: 36px; }
  .steps-5 .step::before { top: 15px; bottom: -16px; left: 7px; right: auto; width: 1px; height: auto;
    background: linear-gradient(180deg, var(--silver-300), var(--line)); }
  .steps-5 .step:last-child::before { display: none; }
  .steps-5 .step::after { top: 0; }
}

@media (max-width: 880px) {
  :root { --header-h: 64px; }
  .brand img { height: 38px; }
  .nav-toggle { display: inline-flex; }
  .nav-wrap {
    position: fixed; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; align-items: stretch; gap: 20px;
    padding: 16px 24px 28px;
    background: var(--bg-light); border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 32px rgba(22, 24, 28, 0.08);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .25s var(--ease), transform .25s var(--ease), visibility 0s linear .25s;
  }
  .nav-open .nav-wrap { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { padding: 14px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .site-nav a[aria-current="page"] { padding-left: 12px; border-left: 2px solid var(--graphite-900); }
  .lang-switch { align-self: flex-start; }

  .biz-grid, .grid-2, .contact-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .step { padding-top: 0; padding-left: 36px; }
  .step::before { top: 15px; bottom: -16px; left: 7px; right: auto; width: 1px; height: auto;
    background: linear-gradient(180deg, var(--silver-300), var(--line)); }
  .step:last-child::before { display: none; }
  .step::after { top: 0; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }
  .hero { padding: 84px 0 76px; }
  .hero-sm { padding: 72px 0 60px; }
  .biz-card, .card { padding: 28px 24px; }
  .biz-card::before { left: 24px; right: 24px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .info-table th, .info-table td { display: block; width: 100%; padding: 0; border: 0; }
  .info-table th { padding-top: 16px; font-size: 13.5px; }
  .info-table td { padding: 4px 0 16px; border-bottom: 1px solid var(--line); }
  .info-table tr:first-child th { border-top: 1px solid var(--line); }
  .info-table tr:first-child td { border-top: 0; }
  .contact-list li { grid-template-columns: 1fr; gap: 2px; }
  .btn-row .btn, .biz-actions .btn { flex: 1 1 auto; }
}