/* 智扣原创模板 ZK-005 · 进出口贸易官网 · 版权归智扣所有 */
:root {
  --ink: #2A1C18;
  --ink-2: #4C3A33;
  --muted: #7A675C;
  --brand: #8C1F28;
  --brand-dark: #6B141B;
  --cream: #F7EFE6;
  --paper: #FFFDF9;
  --soft: #FAF1E7;
  --line: #E3D6C9;
  --line-strong: #CBB6A4;
  --radius: 4px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink); background: var(--paper); line-height: 1.72; font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(1140px, calc(100% - 48px)); margin: 0 auto; }
.eyebrow { display: inline-block; font-size: 11px; letter-spacing: .2em; color: var(--brand); font-weight: 700; margin-bottom: 12px; }
.eyebrow.light { color: #E7C4AF; }
h1, h2, h3 { line-height: 1.35; }
h2 { font-size: clamp(24px, 2.4vw, 33px); font-weight: 800; letter-spacing: -.01em; }
.lead { font-size: 15.5px; color: var(--ink-2); margin: 14px 0 12px; }
.muted { color: var(--muted); }
.section { padding: 74px 0; border-bottom: 1px solid var(--line); }
.section-soft { background: var(--cream); }
.section[id] { scroll-margin-top: 80px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 34px; padding-bottom: 18px; border-bottom: 1px solid var(--line-strong); }
.section-head p { max-width: 380px; color: var(--muted); font-size: 12.5px; line-height: 1.75; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,253,249,.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-strong); }
.header-inner { display: flex; align-items: center; gap: 22px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 38px; height: 38px; border-radius: 3px; display: grid; place-items: center; background: var(--brand); color: var(--cream); font-weight: 700; font-size: 13px; letter-spacing: .04em; }
.brand-text { display: flex; flex-direction: column; line-height: 1.3; }
.brand-text b { font-size: 15.5px; font-weight: 800; }
.brand-text small { font-size: 10px; color: var(--muted); letter-spacing: .12em; }
.site-nav { display: flex; gap: 24px; margin-left: auto; }
.site-nav a { font-size: 13.5px; color: var(--ink-2); padding: 5px 0; border-bottom: 1px solid transparent; }
.site-nav a:hover { color: var(--brand); border-bottom-color: var(--brand); }
.header-cta { background: var(--brand); color: #fff; padding: 9px 17px; border-radius: 3px; font-size: 12.5px; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.header-cta:hover { background: var(--brand-dark); }
.nav-toggle { display: none; border: 0; background: none; font-size: 21px; color: var(--ink); cursor: pointer; }

.hero { position: relative; overflow: hidden; background: var(--cream); border-bottom: 1px solid var(--line-strong); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::before { content: ""; position: absolute; inset: 0; background: radial-gradient(760px 460px at 6% 0%, rgba(140,31,40,.12), transparent 64%), radial-gradient(680px 420px at 96% 8%, rgba(140,31,40,.06), transparent 62%); }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(90deg, rgba(42,28,24,.035) 0 1px, transparent 1px 76px), repeating-linear-gradient(0deg, rgba(42,28,24,.025) 0 1px, transparent 1px 76px); opacity: .7; }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.12fr .88fr; gap: 52px; align-items: center; padding: 74px 0 0; }
.hero h1 { font-size: clamp(30px, 4vw, 48px); font-weight: 800; letter-spacing: .01em; color: var(--ink); }
.hero h1::after { content: ""; display: block; width: 52px; height: 3px; background: var(--brand); margin-top: 20px; }
.hero-sub { margin-top: 18px; font-size: 15.5px; color: var(--brand); font-weight: 600; letter-spacing: .02em; }
.hero-desc { margin-top: 12px; max-width: 500px; font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.btn-primary, .btn-ghost { display: inline-flex; align-items: center; justify-content: center; padding: 12px 22px; border-radius: 3px; font-weight: 700; font-size: 13px; letter-spacing: .03em; border: 1px solid transparent; cursor: pointer; font-family: inherit; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink-2); background: transparent; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.hero-meta { display: flex; margin-top: 26px; font-size: 11.5px; color: var(--muted); }
.hero-meta span { padding: 0 14px; border-left: 1px solid var(--line-strong); }
.hero-meta span:first-child { padding-left: 0; border-left: 0; }

.flow-card { background: var(--paper); border: 1px solid var(--line-strong); border-top: 3px solid var(--brand); border-radius: var(--radius); overflow: hidden; }
.flow-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.flow-title { font-size: 13.5px; font-weight: 700; letter-spacing: .06em; }
.flow-head b { font-size: 10px; letter-spacing: .2em; color: var(--muted); font-weight: 600; }
.flow-body { padding: 4px 20px 6px; }
.flow-row { display: flex; align-items: center; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.flow-row:last-child { border-bottom: 0; }
.flow-tag { flex: none; font-size: 10px; letter-spacing: .12em; color: var(--muted); background: var(--soft); border: 1px solid var(--line); border-radius: 2px; padding: 3px 7px; }
.flow-track { display: flex; align-items: center; flex: 1; min-width: 0; }
.node { flex: none; padding: 8px 10px; font-size: 12px; color: var(--ink-2); background: var(--paper); border: 1px solid var(--line-strong); border-radius: 3px; white-space: nowrap; }
.node-solid { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 700; }
.link { position: relative; flex: 1; min-width: 16px; height: 1px; background: var(--line-strong); margin: 0 3px; }
.link::after { content: ""; position: absolute; right: 0; top: -3px; width: 0; height: 0; border-left: 5px solid var(--line-strong); border-top: 3.5px solid transparent; border-bottom: 3.5px solid transparent; }
.flow-foot { display: flex; justify-content: space-between; gap: 10px; padding: 11px 20px; border-top: 1px solid var(--line); background: var(--soft); font-size: 10.5px; letter-spacing: .06em; color: var(--muted); }
.flow-note { padding: 14px 20px 18px; border-top: 1px solid var(--line); }
.flow-note p { font-size: 11.5px; line-height: 1.75; color: var(--muted); }

.hero-ledger { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 52px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.ledger-item { padding: 24px 22px; border-left: 1px solid var(--line-strong); }
.ledger-item:first-child { border-left: 0; }
.ledger-item b { font-size: 27px; font-weight: 800; letter-spacing: -.01em; color: var(--ink); }
.ledger-item b span { font-size: 12px; color: var(--brand); margin-left: 3px; letter-spacing: 0; }
.ledger-item small { display: block; margin-top: 3px; font-size: 11.5px; letter-spacing: .05em; color: var(--muted); }

.about-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: start; }
.about-copy h2 { margin-bottom: 6px; max-width: 460px; }
.about-copy .muted { font-size: 13.5px; line-height: 1.85; }
.about-numbers { display: flex; gap: 34px; flex-wrap: wrap; margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line); }
.about-numbers div { display: flex; flex-direction: column; }
.about-numbers b { font-size: 22px; font-weight: 800; color: var(--brand); }
.about-numbers b span { font-size: 11.5px; margin-left: 2px; }
.about-numbers span { font-size: 11.5px; color: var(--muted); }
.about-line { margin-top: 20px; font-size: 11px; letter-spacing: .04em; color: var(--muted); }
.caps { border-top: 1px solid var(--ink); }
.cap { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.cap b { flex: none; width: 24px; font-size: 11px; letter-spacing: .06em; color: var(--brand); font-weight: 700; padding-top: 3px; }
.cap strong { display: block; font-size: 15.5px; margin-bottom: 4px; }
.cap p { font-size: 12.5px; color: var(--muted); line-height: 1.75; }

.cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cat-card { display: grid; grid-template-columns: 80px 1fr; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--paper); overflow: hidden; transition: border-color .18s ease; }
.cat-card:hover { border-color: var(--brand); }
.cat-no { display: flex; align-items: flex-start; padding: 22px 16px; font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 24px; font-weight: 700; color: var(--brand); border-right: 1px solid var(--line); background: var(--soft); }
.cat-main { padding: 20px 22px 24px; }
.cat-en { display: block; font-size: 10px; letter-spacing: .18em; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.cat-main h3 { font-size: 17.5px; margin-bottom: 6px; }
.cat-main p { font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.sku-list { list-style: none; margin-top: 14px; border-top: 1px solid var(--line); }
.sku-list li { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 12.5px; border-bottom: 1px solid var(--line); }
.sku-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.sku-list span { color: var(--ink-2); }
.sku-list em { font-style: normal; color: var(--muted); font-size: 11.5px; white-space: nowrap; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.step { border-top: 2px solid var(--brand); padding-top: 16px; }
.step-no { display: block; font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 11px; letter-spacing: .1em; color: var(--brand); margin-bottom: 12px; }
.step b { font-size: 16px; display: block; }
.step p { font-size: 12.5px; color: var(--muted); line-height: 1.75; margin: 6px 0 14px; }
.step-data { display: inline-block; padding-top: 10px; border-top: 1px solid var(--line); font-size: 11.5px; letter-spacing: .04em; color: var(--ink-2); }
.strength-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-top: 44px; padding-top: 30px; border-top: 1px solid var(--line-strong); }
.strength-bottom h3 { font-size: 18px; }
.strength-bottom p { margin-top: 8px; font-size: 13px; max-width: 430px; }
.check-list { list-style: none; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 18px; font-size: 12.5px; color: var(--ink-2); }
.check-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; background: var(--brand); }

.cert-table { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; }
.cert { background: var(--paper); padding: 22px 20px; display: flex; flex-direction: column; gap: 6px; }
.cert b { font-size: 15px; font-weight: 700; }
.cert span { font-size: 11.5px; color: var(--muted); letter-spacing: .02em; }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { display: flex; flex-direction: column; background: var(--paper); border: 1px solid var(--line); border-top: 3px solid var(--brand); border-radius: 0 0 var(--radius) var(--radius); padding: 22px 20px 24px; }
.case-tag { font-size: 10.5px; letter-spacing: .1em; color: var(--brand); font-weight: 600; }
.case-card h3 { font-size: 16.5px; margin: 10px 0 8px; }
.case-card p { font-size: 12.5px; color: var(--muted); line-height: 1.75; }
.case-metric { display: flex; align-items: baseline; gap: 8px; margin-top: 22px; padding-top: 14px; border-top: 1px dashed var(--line); }
.case-metric b { font-size: 26px; font-weight: 800; color: var(--brand); letter-spacing: -.01em; }
.case-metric b span { font-size: 12px; margin-left: 2px; }
.case-metric span { font-size: 11.5px; color: var(--muted); }

.section-contact { border-bottom: 0; background: linear-gradient(135deg, #8C1F28 0%, #6B141B 58%, #4C0F14 100%); color: var(--cream); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-copy h2 { color: #fff; max-width: 460px; }
.contact-desc { margin-top: 14px; font-size: 13px; line-height: 1.85; color: #EDCDBD; max-width: 440px; }
.contact-info { margin-top: 26px; border-top: 1px solid rgba(255,255,255,.2); }
.contact-info div { display: flex; gap: 16px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.contact-info span { flex: none; width: 60px; font-size: 11px; letter-spacing: .1em; color: #DCAE9D; }
.contact-info b { font-size: 13px; font-weight: 500; color: #FFF8F1; word-break: break-all; }
.contact-form { background: var(--paper); color: var(--ink); border-radius: var(--radius); padding: 26px; display: grid; gap: 13px; }
.form-title { font-size: 10px; letter-spacing: .2em; font-weight: 700; color: var(--brand); margin-bottom: 2px; }
.contact-form label { display: grid; gap: 6px; font-size: 11.5px; color: var(--muted); font-weight: 600; }
.contact-form input, .contact-form select { width: 100%; border: 1px solid var(--line); border-radius: 3px; padding: 10px 12px; font: inherit; font-size: 13.5px; background: #FFFCF7; color: var(--ink); outline: none; appearance: none; }
.contact-form select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.contact-form input:focus, .contact-form select:focus { border-color: var(--brand); background: #fff; }
.contact-form .btn-primary { width: 100%; margin-top: 4px; }
.form-tip { font-size: 10.5px; color: #A99684; text-align: center; line-height: 1.7; }

.site-footer { background: #241713; color: #D6C1B3; padding: 44px 0 32px; }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 40px; align-items: start; }
.brand-footer .brand-mark { background: var(--brand); }
.brand-footer .brand-text b { color: #F7EFE6; }
.brand-footer .brand-text small { color: #9D8474; }
.footer-desc { font-size: 12px; margin-top: 12px; max-width: 330px; color: #BBA091; line-height: 1.8; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 12px; }
.footer-links a:hover { color: #fff; }
.footer-meta { text-align: right; font-size: 11.5px; line-height: 1.95; }
.powered { color: #8F7767; }

.toast { position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 14px); background: var(--brand); color: #fff; padding: 11px 20px; border-radius: 3px; font-size: 12.5px; opacity: 0; pointer-events: none; transition: .25s ease; z-index: 30; max-width: calc(100% - 40px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; padding-top: 54px; }
  .flow-card { max-width: 640px; }
  .hero-ledger { grid-template-columns: 1fr 1fr; }
  .ledger-item { border-left: 1px solid var(--line-strong); }
  .ledger-item:nth-child(odd) { border-left: 0; }
  .ledger-item:nth-child(1), .ledger-item:nth-child(2) { border-bottom: 1px solid var(--line); }
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
  .cert-table { grid-template-columns: 1fr 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .strength-bottom { grid-template-columns: 1fr; gap: 26px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-copy h2, .contact-desc { max-width: none; }
  .site-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line-strong); flex-direction: column; gap: 0; padding: 4px 24px 12px; }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; margin-left: auto; }
  .header-cta { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
  .footer-meta { text-align: left; }
}
@media (max-width: 640px) {
  .section { padding: 52px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-head p { max-width: 100%; }
  .hero-inner { padding-top: 44px; gap: 30px; }
  .hero-meta { flex-wrap: wrap; gap: 8px 0; }
  .hero-meta span { padding: 0 10px; }
  .hero-ledger { margin-top: 38px; }
  .ledger-item { padding: 18px 14px; }
  .ledger-item b { font-size: 22px; }
  .node { padding: 7px 8px; font-size: 11.5px; }
  .link { min-width: 10px; }
  .flow-head, .flow-body, .flow-foot, .flow-note { padding-left: 16px; padding-right: 16px; }
  .cat-grid { grid-template-columns: 1fr; gap: 14px; }
  .cat-card { grid-template-columns: 62px 1fr; }
  .cat-no { font-size: 20px; padding: 18px 12px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .cert-table { grid-template-columns: 1fr 1fr; }
  .cert { padding: 18px 16px; }
  .contact-form { padding: 20px; }
}