/* ============================================================
   [COMPANY] — import / distribution / e-commerce operations
   Palette: deep navy + brass   ·   Type: Poppins / Inter / Noto Sans SC
   Single file, no build step.
   ============================================================ */

:root {
  --ink: #0a1622;
  --ink-2: #16232f;
  --paper: #ffffff;
  --bone: #f5f7f9;
  --accent: #0e4f7a;
  --accent-dk: #0a3a5a;
  --brass: #c9631f;
  --brass-lt: #e08540;
  --line: #e2e8ed;
  --line-dk: #24323f;
  --muted: #5a6772;
  --muted-lt: #93a1ad;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(10, 22, 34, .04), 0 14px 36px -20px rgba(10, 22, 34, .25);
  --max: 1140px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[lang="zh-CN"] body {
  font-family: "Noto Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.78;
}

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

h1, h2, h3, h4 {
  font-family: "Poppins", "Noto Sans SC", sans-serif;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.028em;
  margin: 0 0 .6em;
  text-wrap: balance;
}

html[lang="zh-CN"] h1,
html[lang="zh-CN"] h2,
html[lang="zh-CN"] h3 { letter-spacing: -.01em; line-height: 1.3; }

h1 { font-size: clamp(2.05rem, 4.1vw, 3.35rem); }
h2 { font-size: clamp(1.65rem, 3.1vw, 2.5rem); }
h3 { font-size: 1.2rem; letter-spacing: -.015em; }
h4 { font-size: 1rem; letter-spacing: -.01em; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

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

.kicker {
  font-family: "Space Mono", ui-monospace, monospace;
  font-size: .715rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.2rem;
  display: flex;
  align-items: center;
  gap: .7em;
}
.kicker::before {
  content: "";
  width: 26px; height: 1px;
  background: currentColor; opacity: .5; flex: none;
}
html[lang="zh-CN"] .kicker { letter-spacing: .1em; }

.lede { font-size: clamp(1.03rem, 1.5vw, 1.22rem); color: var(--muted); max-width: 64ch; }
.muted { color: var(--muted); }
.small { font-size: .875rem; line-height: 1.6; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  padding: .92em 1.55em; border-radius: 999px;
  font-weight: 550; font-size: .95rem; letter-spacing: -.005em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn-light { background: var(--paper); color: var(--ink); }
.btn-light:hover { background: var(--bone); }
.btn-arrow::after { content: "→"; transition: transform .25s var(--ease); }
.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 2rem; height: 70px; }

.brand {
  font-family: "Poppins", "Noto Sans SC", sans-serif;
  font-weight: 600; font-size: 1.05rem; letter-spacing: -.03em;
  display: flex; align-items: center; gap: .6rem; flex: none;
}
.brand-mark {
  width: 27px; height: 27px; border-radius: 6px;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font-size: .76rem; font-weight: 700; letter-spacing: 0;
}

.nav-links { display: flex; gap: 1.55rem; margin-left: auto; }
.nav-links a {
  font-size: .92rem; font-weight: 450; color: var(--ink-2);
  padding: .3em 0; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1.5px; background: var(--brass);
  transition: right .3s var(--ease);
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { right: 0; }

.lang-switch {
  font-family: "Space Mono", monospace;
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 999px;
  padding: .42em .85em; color: var(--muted);
  transition: border-color .2s var(--ease), color .2s var(--ease);
  flex: none;
}
.lang-switch:hover { border-color: var(--ink); color: var(--ink); }

.nav-cta { flex: none; }
.nav-cta .btn { padding: .68em 1.25em; font-size: .89rem; }

/* ---------- hero ---------- */
.hero { padding: clamp(54px, 8.5vw, 104px) 0 clamp(46px, 6.5vw, 80px); }
.hero-grid {
  display: grid; grid-template-columns: 1.12fr .88fr;
  gap: clamp(2rem, 5vw, 4.4rem); align-items: end;
}
.hero h1 { margin-bottom: 1.15rem; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero-note { margin-top: 1.4rem; font-size: .85rem; color: var(--muted-lt); }

.hero-panel {
  background: var(--bone); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.6rem 1.6rem 1.45rem;
  box-shadow: var(--shadow);
}
.hero-panel dl { margin: 0; display: grid; gap: 1rem; }
.hero-panel .row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.hero-panel dt { font-size: .82rem; color: var(--muted); }
.hero-panel dd {
  margin: 0; font-family: "Poppins", sans-serif; font-weight: 600;
  font-size: 1.24rem; letter-spacing: -.02em; white-space: nowrap;
}
.hero-panel .divider { height: 1px; background: var(--line); }

/* ---------- value bar ---------- */
.trustbar { border-block: 1px solid var(--line); background: var(--bone); }
.trustbar-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; padding: 1.5rem 0; }
.trust-item { font-size: .8rem; color: var(--muted); line-height: 1.45; }
.trust-item strong {
  display: block; font-family: "Poppins", "Noto Sans SC", sans-serif;
  font-size: 1rem; color: var(--ink); font-weight: 600;
  letter-spacing: -.02em; margin-bottom: .15rem;
}

/* ---------- sections ---------- */
.section { padding: clamp(58px, 7.5vw, 100px) 0; }
.section-tight { padding: clamp(42px, 5.5vw, 70px) 0; }
.section-head { max-width: 60ch; margin-bottom: clamp(2.1rem, 3.8vw, 3.2rem); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }

.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.5rem 1.5rem; background: var(--paper);
  display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #cfd9e1; }
.card h3 { margin-bottom: .5rem; font-size: 1.1rem; }
.card p { font-size: .935rem; color: var(--muted); margin-bottom: 0; }
.card .num {
  font-family: "Space Mono", monospace; font-size: .7rem; letter-spacing: .14em;
  color: var(--muted-lt); margin-bottom: 1.3rem; text-transform: uppercase;
}
.card .card-link {
  margin-top: auto; padding-top: 1.2rem; font-size: .86rem; font-weight: 550;
  color: var(--accent); display: inline-flex; gap: .4em; align-items: center;
}
.card .card-link::after { content: "→"; transition: transform .25s var(--ease); }
.card:hover .card-link::after { transform: translateX(3px); }

/* ---------- dark band ---------- */
.band {
  background: var(--ink); color: #dde5eb;
  position: relative; overflow: hidden;
}
.band::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: url("hb-texture-soft.png") repeat;
  background-size: 320px 320px;
  pointer-events: none;
}
.band > * { position: relative; z-index: 1; }
.band .kicker { color: var(--brass-lt); }
.band h2 { color: var(--paper); }
.band .lede { color: #9fadb9; }
.band .card { background: #101e2a; border-color: var(--line-dk); }
.band .card h3 { color: var(--paper); }
.band .card p { color: #96a4b0; }
.band .card .num { color: #5d6c79; }
.band .card:hover { border-color: #354656; background: #13232f; }
.band .checklist li,
.band .prose li,
.band .prose p { color: #b9c6d1; }
.band .checklist strong,
.band .prose strong { color: var(--paper); }
.band .checklist li::before { border-color: var(--brass-lt); }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.step { padding: 1.8rem 1.5rem 0 0; border-right: 1px solid var(--line); }
.step:last-child { border-right: 0; }
.step + .step { padding-left: 1.5rem; }
.step .n {
  font-family: "Space Mono", monospace; font-size: .7rem; letter-spacing: .13em;
  color: var(--brass); display: block; margin-bottom: .9rem; text-transform: uppercase;
}
.step h3 { font-size: 1.02rem; margin-bottom: .4rem; }
.step p { font-size: .9rem; color: var(--muted); }

/* ---------- split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 4.5vw, 4.2rem); align-items: center; }
.checklist { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .8rem; }
.checklist li { position: relative; padding-left: 1.85rem; font-size: .95rem; color: var(--ink-2); }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: .45em;
  width: 12px; height: 7px;
  border-left: 1.8px solid var(--brass); border-bottom: 1.8px solid var(--brass);
  transform: rotate(-45deg);
}
.checklist strong { font-weight: 600; }

/* ---------- figure ---------- */
.figure {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  background: var(--bone); aspect-ratio: 4 / 3; position: relative;
}
.figure img { width: 100%; height: 100%; object-fit: cover; }
.figure-ph {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: "Space Mono", monospace; font-size: .7rem; letter-spacing: .1em;
  color: var(--muted-lt); text-transform: uppercase; text-align: center;
  padding: 1.2rem; line-height: 1.9;
}

/* ---------- quote ---------- */
.quote-block { border-left: 2px solid var(--brass); padding-left: 1.6rem; max-width: 48ch; }
.quote-block p { font-size: 1.1rem; line-height: 1.6; color: var(--ink-2); font-style: italic; }
.quote-block cite { font-style: normal; font-size: .85rem; color: var(--muted); display: block; margin-top: .9rem; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 4.5vw, 4rem); }
.form { display: grid; gap: 1.05rem; }
.field { display: grid; gap: .4rem; }
.field label { font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
html[lang="zh-CN"] .field label { letter-spacing: .02em; text-transform: none; font-size: .82rem; }
.field input, .field select, .field textarea {
  font: inherit; font-size: .94rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: 9px;
  padding: .78em .9em; width: 100%;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14, 79, 122, .12);
}
.field textarea { resize: vertical; min-height: 118px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.05rem; }
.form .consent { font-size: .78rem; color: var(--muted); line-height: 1.55; }
.form button { justify-self: start; }

.contact-list { list-style: none; padding: 0; margin: 1.7rem 0 0; display: grid; gap: 1.35rem; }
.contact-list .label {
  font-size: .73rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted-lt); margin-bottom: .28rem;
}
.contact-list .value { font-size: .98rem; }
.contact-list a:hover { color: var(--accent); }

/* ---------- page hero ---------- */
.page-hero { padding: clamp(46px, 6.5vw, 80px) 0 clamp(30px, 3.6vw, 46px); border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(1.95rem, 4vw, 3.05rem); max-width: 24ch; }
.breadcrumb {
  font-family: "Space Mono", monospace; font-size: .69rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted-lt); margin-bottom: 1.35rem;
}
.breadcrumb a:hover { color: var(--ink); }

/* ---------- prose ---------- */
.prose { max-width: 72ch; }
.prose h2 { font-size: 1.3rem; margin-top: 2.3rem; }
.prose h3 { font-size: 1.03rem; margin-top: 1.7rem; }
.prose p, .prose li { font-size: .95rem; color: var(--ink-2); }
.prose ul { padding-left: 1.15rem; }
.prose li { margin-bottom: .48rem; }
.prose .updated { font-size: .82rem; color: var(--muted); }

/* ---------- CTA ---------- */
.cta { background: var(--accent); color: #eaf1f6; }
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  flex-wrap: wrap; padding: clamp(46px, 5.5vw, 68px) 0;
}
.cta h2 { color: #fff; margin-bottom: .4rem; font-size: clamp(1.55rem, 2.9vw, 2.15rem); }
.cta p { color: rgba(234, 241, 246, .82); margin: 0; font-size: .96rem; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink); color: #8b98a4; padding: 3.8rem 0 2rem; font-size: .865rem;
  position: relative; overflow: hidden;
}
.site-footer::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: url("hb-texture-soft.png") repeat;
  background-size: 420px 420px;
  opacity: .55; pointer-events: none;
}
.site-footer > * { position: relative; z-index: 1; }
.footer-top { display: grid; grid-template-columns: 1.5fr .8fr .8fr .8fr; gap: 2rem; padding-bottom: 2.8rem; }
.site-footer .brand { color: var(--paper); margin-bottom: .9rem; }
.site-footer .brand-mark { background: var(--paper); color: var(--ink); }
.footer-about { max-width: 34ch; line-height: 1.62; }
.footer-col h4 {
  color: var(--paper); font-size: .76rem; letter-spacing: .1em; text-transform: uppercase;
  margin-bottom: .95rem; font-family: "Inter", "Noto Sans SC", sans-serif; font-weight: 550;
}
html[lang="zh-CN"] .footer-col h4 { letter-spacing: .04em; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.footer-col a:hover { color: var(--paper); }
.footer-bottom {
  border-top: 1px solid var(--line-dk); padding-top: 1.5rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: .77rem; color: #8794a0;
}
.disclaimer { font-size: .73rem; color: #93a1ad; line-height: 1.62; margin-top: 1.1rem; max-width: 72ch; }

/* ---------- mobile menu ---------- */
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--line); background: transparent; cursor: pointer;
  padding: 0; align-items: center; justify-content: center;
  flex-direction: column; gap: 4px; flex: none;
}
.nav-toggle i { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .25s var(--ease), opacity .2s var(--ease); }
body.menu-open .nav-toggle i:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
body.menu-open .nav-toggle i:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle i:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-panel { max-width: 470px; }
  .trustbar-inner { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-2, .split, .contact-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; border-bottom: 1px solid var(--line); padding: 1.4rem 0; }
  .step + .step { padding-left: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }

  .nav { gap: .5rem; }
  .brand { min-width: 0; font-size: .98rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; order: 6; margin-left: .45rem; }
  .nav-cta { display: none; }
  .lang-switch { order: 5; margin-left: auto; padding: .38em .7em; }

  body.menu-open .nav-links {
    display: flex; flex-direction: column; gap: 1rem;
    position: fixed; top: 70px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 1.3rem 24px 1.7rem; z-index: 70;
    box-shadow: 0 24px 40px -28px rgba(10, 22, 34, .45);
  }
  body.menu-open .nav-links a { font-size: 1rem; padding: .22em 0; }
  body.menu-open .nav-links a::after { display: none; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero-panel dd { font-size: 1.12rem; }
}

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

/* ---------- 悬浮询问抽屉 ---------- */
.ask-fab {
  position: fixed; right: clamp(16px, 2.4vw, 34px); bottom: clamp(70px, 7vw, 96px);
  z-index: 60;
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .82em 1.35em;
  border: 0; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font: inherit; font-size: .9rem; font-weight: 550; letter-spacing: .01em;
  cursor: pointer;
  box-shadow: 0 8px 26px rgba(10, 22, 34, .28);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.ask-fab:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(10, 22, 34, .34); background: var(--steel); }
.ask-fab[aria-expanded="true"] { background: var(--steel); }

.ask-panel {
  position: fixed; right: clamp(16px, 2.4vw, 34px); bottom: calc(clamp(16px, 2.4vw, 34px) + 62px);
  z-index: 61;
  width: min(392px, calc(100vw - 32px));
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 22px 60px rgba(10, 22, 34, .22);
  padding: 1.35rem 1.35rem 1.2rem;
}
.ask-panel[hidden] { display: none; }
.ask-head { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.ask-head h3 { font-size: 1.06rem; margin-bottom: .35rem; }
.ask-head p { font-size: .84rem; color: var(--muted); margin: 0; line-height: 1.5; }
.ask-close {
  margin-left: auto; flex: none;
  background: none; border: 0; cursor: pointer;
  font-size: 1.5rem; line-height: 1; color: var(--muted); padding: 0 .1rem;
}
.ask-close:hover { color: var(--ink); }
.ask-form { display: grid; gap: .7rem; }
.ask-form label { display: grid; gap: .3rem; }
.ask-form label span {
  font-family: var(--mono); font-size: .67rem; letter-spacing: .09em;
  text-transform: uppercase; color: var(--muted);
}
.ask-form input, .ask-form textarea {
  width: 100%; font: inherit; font-size: .9rem;
  padding: .58em .7em;
  border: 1px solid var(--line); border-radius: 7px;
  background: #fff; color: var(--ink);
}
.ask-form input:focus, .ask-form textarea:focus {
  outline: 2px solid var(--steel); outline-offset: 1px; border-color: var(--steel);
}
.ask-form textarea { resize: vertical; min-height: 68px; }
.ask-form .btn { width: 100%; justify-content: center; margin-top: .2rem; }

@media (max-width: 560px) {
  .ask-fab { right: 14px; bottom: 74px; padding: .74em 1.15em; font-size: .85rem; }
  .ask-panel { right: 10px; left: 10px; width: auto; bottom: 74px; padding: 1.1rem; }
}

/* ---------- 结构补丁：footer 列平铺链接、trustbar 防溢出 ---------- */
.footer-col > a,
.footer-col > span { display: block; margin-bottom: .55rem; font-size: .86rem; color: #93a1ad; }
.footer-col > a:last-child,
.footer-col > span:last-child { margin-bottom: 0; }
.footer-col > a { color: #b9c6d1; }
.trust-item { min-width: 0; }
.trust-item strong { overflow-wrap: anywhere; }