/* ==========================================================================
   ZRT · Overseas B2B Site  |  Style: S7 American Industrial (brand-tuned)
   Brand colors sampled from the customer logo: #003B8F / #182088 / #0068B8
   ========================================================================== */

:root {
  --brand: #003B8F;
  --brand-deep: #182088;
  --brand-bright: #0068B8;
  --brand-ink: #0B1B3A;
  --accent: #C2410C;        /* 5.18:1 on white — 用于白字按钮底与白底强调文字，满足 WCAG AA */
  --accent-bright: #F97316; /* 仅用于 2px 装饰条，不承载文字 */
  --accent-soft: #FFF3E8;

  --ink: #0F172A;
  --body: #33415C;
  --muted: #5A6B85;
  --line: #E2E8F0;
  --line-strong: #CBD5E1;
  --bg: #FFFFFF;
  --bg-soft: #F5F7FA;
  --bg-tint: #EEF3FA;

  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow: 0 8px 24px -12px rgba(15, 23, 42, .18);
  --shadow-lg: 0 24px 60px -28px rgba(15, 23, 42, .28);

  --font: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-num: 'Roboto Condensed', 'Inter', Arial, sans-serif;

  --wrap: 1200px;
  --gut: 24px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--brand-bright); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 {
  margin: 0 0 .5em;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.16rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.15em; }
li { margin-bottom: .4em; }
strong { color: var(--ink); font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.section { padding: 80px 0; }
.section--tight { padding: 56px 0; }
.section--soft { background: var(--bg-soft); }
.section--tint { background: var(--bg-tint); }
.section--dark { background: var(--brand-deep); color: #C8D6EC; }
.section--dark h2, .section--dark h3, .section--dark strong { color: #fff; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .74rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--brand-bright);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--accent-bright); }
.section--dark .eyebrow { color: #8FB4E0; }

.lede { font-size: 1.06rem; color: var(--muted); max-width: 62ch; }
.section--dark .lede { color: #A9BFDC; }

.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); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 24px; border-radius: var(--radius);
  font-family: var(--font); font-size: .95rem; font-weight: 600;
  letter-spacing: .01em; cursor: pointer; border: 1px solid transparent;
  transition: background .16s, color .16s, border-color .16s, transform .16s;
  text-decoration: none !important;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: #A3350A; }
.btn--brand { background: var(--brand); color: #fff; }
.btn--brand:hover { background: var(--brand-deep); }
.btn--ghost { border-color: rgba(255, 255, 255, .45); color: #fff; }
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn--outline { border-color: var(--line-strong); color: var(--ink); background: #fff; }
.btn--outline:hover { border-color: var(--brand); color: var(--brand); }
.btn--sm { padding: 9px 16px; font-size: .86rem; }
.btn svg { width: 17px; height: 17px; flex: none; }

/* ---------- Top utility bar ---------- */
.topbar {
  background: var(--brand-ink); color: #A8BEDA;
  font-size: .8rem; letter-spacing: .01em;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 38px; gap: 16px; }
.topbar-list { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar a { color: #D3E1F3; display: inline-flex; align-items: center; gap: 7px; }
.topbar a:hover { color: #fff; text-decoration: none; }
.topbar svg { width: 14px; height: 14px; opacity: .85; }
.topbar .topbar-tag { color: #7E96B8; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none !important; flex: none; }
.brand img { width: 38px; height: 38px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name b {
  font-size: 1.18rem; letter-spacing: .06em; color: var(--brand-deep);
  font-family: var(--font-num); font-weight: 700;
}
.brand-name span { font-size: .66rem; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 9px 13px; border-radius: var(--radius);
  font-size: .92rem; font-weight: 500; color: var(--body);
}
.nav a:hover { background: var(--bg-tint); color: var(--brand); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--brand); font-weight: 600; background: var(--bg-tint); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #fff; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(112deg, #131a6b 0%, var(--brand-deep) 38%, var(--brand) 100%);
  color: #D5E2F4; padding: 78px 0 70px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 64px 64px; pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; width: 620px; height: 620px; right: -180px; top: -220px;
  background: radial-gradient(circle, rgba(0,104,184,.55), transparent 68%); pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { color: #fff; margin-bottom: 18px; font-size: clamp(1.9rem, 3.5vw, 2.85rem); line-height: 1.14; }
.hero h1 em { font-style: normal; color: #8FC0EE; }
.hero-sub { font-size: 1.08rem; color: #B9CDE6; max-width: 54ch; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-badge {
  font-size: .74rem; font-weight: 600; letter-spacing: .07em; text-transform: uppercase;
  padding: 6px 11px; border: 1px solid rgba(255,255,255,.24); border-radius: 2px;
  color: #D6E4F6; background: rgba(255,255,255,.05);
}

/* Hero spec panel */
.spec-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 6px; padding: 26px;
  backdrop-filter: blur(4px);
}
.spec-card h2 {
  font-size: .72rem; letter-spacing: .18em; text-transform: uppercase;
  color: #8FB4E0; font-weight: 700; margin-bottom: 18px;
}
.spec-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-top: 1px solid rgba(255,255,255,.1); }
.spec-row:first-of-type { border-top: 0; }
.spec-row dt { font-size: .84rem; color: #9FB6D4; margin: 0; }
.spec-row dd { margin: 0; font-family: var(--font-num); font-size: .95rem; font-weight: 600; color: #fff; text-align: right; }
.spec-row dd small { display: block; font-family: var(--font); font-weight: 400; font-size: .72rem; color: #8FA6C6; letter-spacing: .04em; }

/* ---------- Stat bar ---------- */
.statbar { background: #fff; border-bottom: 1px solid var(--line); }
.statbar .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat { padding: 26px 24px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b {
  display: block; font-family: var(--font-num); font-size: 2.15rem; font-weight: 700;
  color: var(--brand-deep); line-height: 1; letter-spacing: -.01em;
}
.stat b i { font-style: normal; font-size: 1.05rem; color: var(--accent); margin-left: 3px; }
.stat span { display: block; margin-top: 7px; font-size: .82rem; color: var(--muted); letter-spacing: .02em; }

/* ---------- Trust strip ---------- */
.trust { background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 16px 0; }
.trust .wrap { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.trust-label { font-size: .72rem; letter-spacing: .15em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.trust-items { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.trust-item {
  font-size: .8rem; font-weight: 600; letter-spacing: .05em; color: var(--brand-deep);
  background: #fff; border: 1px solid var(--line-strong); border-radius: 2px; padding: 6px 12px;
}

/* ---------- Section head ---------- */
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 40px; }
.sec-head .lede { margin-bottom: 0; }
.sec-head a.sec-more { font-size: .88rem; font-weight: 600; white-space: nowrap; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cat-card {
  position: relative;
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: border-color .18s, box-shadow .18s, transform .18s; text-decoration: none !important;
}
.cat-card:hover { border-color: var(--brand-bright); box-shadow: var(--shadow); transform: translateY(-2px); }
.cat-card .glyph { background: var(--bg-tint); border-bottom: 1px solid var(--line); }
.cat-card .glyph img { width: 100%; }
.cat-card .body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.cat-card h3 { font-size: 1.02rem; margin-bottom: 7px; color: var(--ink); }
.cat-card p { font-size: .87rem; color: var(--muted); margin-bottom: 14px; flex: 1; }
.cat-card .more { font-size: .82rem; font-weight: 600; color: var(--brand-bright); display: inline-flex; align-items: center; gap: 6px; }
.cat-card .more::after { content: "\2192"; transition: transform .18s; }
.cat-card:hover .more::after { transform: translateX(3px); }
.cat-card .scheme-tag {
  font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; color: #8496B0;
  position: absolute; margin: 10px 0 0 12px; background: rgba(255,255,255,.92);
  padding: 2px 6px; border-radius: 2px;
}

/* 用于填满网格的 CTA 卡 */
.cat-card--cta {
  grid-column: span 2;
  background: linear-gradient(150deg, var(--brand-deep), var(--brand));
  border-color: transparent; justify-content: center;
}
.cat-card--cta .body { padding: 30px 30px; justify-content: center; }
.cat-card--cta p { flex: 0 0 auto; max-width: 58ch; }
.cat-card--cta h3 { color: #fff; font-size: 1.08rem; }
.cat-card--cta p { color: #B4C9E3; }
.cat-card--cta .more { color: #FFB27A; }
.cat-card--cta:hover { border-color: var(--accent); }

/* ---------- Feature / why ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.feat-grid--3 { grid-template-columns: repeat(3, 1fr); }
.feat { padding: 26px 24px 26px 0; border-right: 1px solid var(--line); }
.feat:last-child { border-right: 0; }
.feat .n {
  font-family: var(--font-num); font-size: .78rem; font-weight: 700; color: var(--accent);
  letter-spacing: .1em; display: block; margin-bottom: 10px;
}
.feat h3 { font-size: .98rem; margin-bottom: 8px; }
.feat p { font-size: .86rem; color: var(--muted); margin: 0; }

/* ---------- Applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.app-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 6px;
}
.app-item .idx { font-family: var(--font-num); font-size: .72rem; color: #9AAABF; letter-spacing: .1em; }
.app-item h3 { font-size: .92rem; margin: 0; }
.app-item p { font-size: .79rem; color: var(--muted); margin: 0; line-height: 1.5; }

/* ---------- Quality steps ---------- */
.step-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.step {
  display: grid; grid-template-columns: 84px 1fr; gap: 24px;
  padding: 24px 0; border-bottom: 1px solid var(--line); align-items: start;
}
.step .num {
  font-family: var(--font-num); font-size: 1.9rem; font-weight: 700; line-height: 1;
  color: var(--brand); opacity: .28;
}
.step h3 { font-size: 1.02rem; margin-bottom: 5px; }
.step p { margin: 0; font-size: .9rem; color: var(--muted); }

/* ---------- Tables ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.data-table caption { text-align: left; font-size: .78rem; color: var(--muted); padding-bottom: 10px; }
.data-table th, .data-table td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table th {
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); font-weight: 700; background: var(--bg-soft);
  border-bottom: 1px solid var(--line-strong);
}
.data-table td:first-child { font-weight: 600; color: var(--ink); width: 30%; }
.data-table td .num { font-family: var(--font-num); }

/* ---------- Model chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--font-num); font-size: .8rem; letter-spacing: .02em;
  padding: 7px 11px; background: #fff; border: 1px solid var(--line-strong);
  border-radius: 2px; color: var(--brand-deep);
}

/* ---------- Callout ---------- */
.callout {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .9rem; color: #7A3E0C;
}
.callout strong { color: #7A3E0C; }
.note {
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  padding: 14px 18px; font-size: .86rem; color: var(--muted); background: var(--bg-soft);
}

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(100deg, var(--brand-deep), var(--brand)); color: #DFE9F7; padding: 60px 0; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 36px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { margin: 0; color: #B4C9E3; }

/* ---------- RFQ form ---------- */
.form-host { container-type: inline-size; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@container (max-width: 520px) {
  .form-grid { grid-template-columns: 1fr; }
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink); }
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  font-family: var(--font); font-size: .93rem; color: var(--ink);
  padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: #fff; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand-bright); box-shadow: 0 0 0 3px rgba(0,104,184,.13);
}
.field textarea { min-height: 120px; resize: vertical; }
.field .hint { font-size: .74rem; color: var(--muted); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .84rem; color: var(--body); }
.check input { width: 16px; height: 16px; margin-top: 3px; flex: none; accent-color: var(--brand); }
.hp { position: absolute !important; left: -9999px; opacity: 0; height: 0; }
.form-status { font-size: .88rem; margin-top: 14px; }
.form-status[data-state="ok"] { color: #0B7A3B; }
.form-status[data-state="err"] { color: #B42318; }

/* 独立成段的宽表单 */
.form-wide { max-width: 880px; }
.form-wide .aside-card { padding: 32px; }

/* ---------- Contact cards ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.contact-item { padding: 26px; border-bottom: 1px solid var(--line); }
.contact-item:nth-child(odd) { border-right: 1px solid var(--line); }
.contact-item h3 { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.contact-item p, .contact-item a { font-size: 1rem; color: var(--ink); margin: 0; }
.contact-item a { color: var(--brand-bright); font-weight: 600; }

/* ---------- Cert grid ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cert-fig { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cert-fig { display: flex; flex-direction: column; }
.cert-fig img {
  width: 100%; height: 340px; object-fit: contain;
  background: var(--bg-soft); padding: 8px;
}
.cert-fig figcaption { margin-top: auto; }
.cert-fig figcaption { padding: 13px 15px; font-size: .8rem; color: var(--muted); border-top: 1px solid var(--line); }

/* ---------- Footer ---------- */
.site-footer { background: var(--brand-ink); color: #94A9C6; padding: 60px 0 0; font-size: .88rem; }
.site-footer h3 { color: #fff; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 16px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand .badge { width: 44px; height: 44px; border-radius: 50%; background: #fff; display: grid; place-items: center; flex: none; }
.footer-brand .badge img { width: 30px; height: 30px; }
.footer-brand b { display: block; color: #fff; font-family: var(--font-num); font-size: 1.16rem; letter-spacing: .06em; }
.footer-brand span { font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; color: #7E96B8; }
.site-footer p { color: #8FA5C2; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: #B7C9E1; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0;
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: .79rem; color: #7E96B8;
}
.footer-bottom a { color: #9FB6D4; }

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta { display: none; }

/* ---------- Cookie banner ---------- */
#cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  background: #0B1B3A; color: #C7D6EA; border-top: 2px solid var(--accent);
  padding: 16px 0; box-shadow: 0 -8px 30px rgba(0,0,0,.25);
}
#cookie-banner[hidden] { display: none; }
#cookie-banner .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
#cookie-banner p { margin: 0; font-size: .84rem; }
#cookie-banner a { color: #fff; text-decoration: underline; }
.cc-actions { display: flex; gap: 10px; flex: none; }
.cc-btn {
  font-family: var(--font); font-size: .82rem; font-weight: 600; cursor: pointer;
  padding: 9px 18px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,.4);
  background: transparent; color: #fff;
}
.cc-btn:hover { background: rgba(255,255,255,.12); }
.cc-btn--accept { background: #fff; color: #0B1B3A; border-color: #fff; }
.cc-btn--accept:hover { background: #E6EEF9; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(112deg, #131a6b, var(--brand-deep) 55%, var(--brand));
  color: #C8D8EE; padding: 56px 0 52px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px;
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; margin-bottom: 12px; max-width: 24ch; }
.page-hero p { color: #B4C9E3; max-width: 66ch; margin: 0; }
.crumbs { display: flex; gap: 8px; font-size: .78rem; color: #8FB0D4; margin-bottom: 16px; flex-wrap: wrap; }
.crumbs a { color: #A9C4E4; }
.crumbs span::after { content: "/"; margin-left: 8px; color: #5F7CA3; }
.crumbs span:last-child::after { content: ""; }

/* ---------- Prose ---------- */
.prose { max-width: 74ch; }
.prose h2 { margin-top: 2.2em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { color: var(--body); }

/* ---------- Two column layout ---------- */
.split { display: grid; grid-template-columns: 1.35fr .65fr; gap: 56px; align-items: start; }
.split--form { grid-template-columns: .88fr 1.12fr; }
.sticky-aside { position: sticky; top: 100px; }
.aside-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.aside-card h3 { font-size: .74rem; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.aside-card + .aside-card { margin-top: 16px; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 18px 34px 18px 0; font-weight: 600; color: var(--ink);
  font-size: .98rem; position: relative; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 15px;
  font-size: 1.35rem; color: var(--brand-bright); font-weight: 400; line-height: 1;
}
.faq details[open] summary::after { content: "\2013"; }
.faq .a { padding: 0 0 20px; font-size: .92rem; color: var(--muted); max-width: 82ch; }

/* ---------- Admin ---------- */
.admin-shell { max-width: 1080px; margin: 40px auto; padding: 0 20px; }
.admin-card { background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 26px; }
.admin-shell input[type="password"], .admin-shell input[type="text"], .admin-shell select {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 4px; font-family: var(--font); font-size: .95rem;
}
.lead-table { width: 100%; border-collapse: collapse; font-size: .84rem; }
.lead-table th, .lead-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.lead-table th { background: var(--bg-soft); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lead-table td.msg { max-width: 320px; }

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0 !important; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.list-check { list-style: none; padding: 0; }
.list-check li { position: relative; padding-left: 24px; margin-bottom: 9px; }
.list-check li::before {
  content: ""; position: absolute; left: 0; top: .55em; width: 11px; height: 6px;
  border-left: 2px solid var(--brand-bright); border-bottom: 2px solid var(--brand-bright);
  transform: rotate(-45deg);
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .feat-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .feat { border-bottom: 1px solid var(--line); }
  .feat:nth-child(2n) { border-right: 0; }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .sticky-aside { position: static; }
}

@media (max-width: 860px) {
  .section { padding: 56px 0; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); flex-direction: column;
    align-items: stretch; padding: 10px 16px 18px; gap: 2px; box-shadow: var(--shadow);
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: 13px 12px; border-radius: var(--radius); }
  .nav-toggle { display: inline-flex; }
  .site-header .wrap { position: relative; min-height: 64px; }
  .header-actions .btn--brand { display: none; }
  .topbar-list .topbar-tag { display: none; }
  .statbar .wrap { grid-template-columns: 1fr 1fr; }
  .stat { border-left: 0; border-top: 1px solid var(--line); padding: 20px 0; }
  .stat:nth-child(-n+2) { border-top: 0; }
  .stat:nth-child(even) { padding-left: 20px; border-left: 1px solid var(--line); }
  .app-grid { grid-template-columns: 1fr 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-item:nth-child(odd) { border-right: 0; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
  .step { grid-template-columns: 56px 1fr; gap: 16px; }
  .mobile-cta {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1px; position: fixed;
    left: 0; right: 0; bottom: 0; z-index: 80; background: var(--line);
    box-shadow: 0 -4px 18px rgba(0,0,0,.14);
  }
  .mobile-cta a {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 8px; font-size: .88rem; font-weight: 600; background: #fff; color: var(--brand-deep);
  }
  .mobile-cta a.wa { background: #25D366; color: #073B1F; }
  body { padding-bottom: 52px; }
  #cookie-banner { bottom: 52px; }
  .hero { padding: 52px 0 46px; }
  .page-hero { padding: 40px 0 38px; }
}

@media (max-width: 560px) {
  .feat-grid--3 { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card--cta { grid-column: span 1; }
  .app-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat { border-right: 0; }
  .topbar .wrap { min-height: 34px; }
  .topbar-list { gap: 14px; font-size: .74rem; }
  .stat b { font-size: 1.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}

/* 打印 */
@media print {
  .site-header, .topbar, .mobile-cta, #cookie-banner, .cta-band { display: none !important; }
  body { padding-bottom: 0; }
}