/* 易优途首页预览 — bilingual + modal + SEO-friendly layout */
:root {
  --bg: #0b1220;
  --bg-elev: #121a2b;
  --bg-card: #151f33;
  --line: rgba(148, 163, 184, 0.18);
  --text: #e8eef9;
  --muted: #9aa8c0;
  --faint: #7b879e;
  --accent: #3db8ff;
  --accent-2: #6ee7b7;
  --accent-soft: rgba(61, 184, 255, 0.12);
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  --max: 1120px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(61,184,255,.14), transparent 55%),
    radial-gradient(700px 380px at 90% 8%, rgba(110,231,183,.08), transparent 50%),
    var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body.modal-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9em;
  background: rgba(255,255,255,.06);
  padding: .1em .35em;
  border-radius: 4px;
}

.preview-banner {
  display: flex; justify-content: center; gap: .75rem; flex-wrap: wrap;
  padding: .45rem 1rem; font-size: .78rem; color: #b7f0cf;
  background: #0a1f18; border-bottom: 1px solid rgba(110,231,183,.25);
}

.site-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: .75rem;
  max-width: var(--max); margin: 0 auto; padding: .7rem 1.1rem;
  backdrop-filter: blur(12px); background: rgba(11, 18, 32, .82);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .65rem; min-width: 0; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: .72rem; font-weight: 700;
  background: linear-gradient(135deg, #1d4ed8, #0891b2);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.15);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: .95rem; }
.brand-text small { color: var(--faint); font-size: .7rem; }
.nav { display: flex; gap: .1rem; margin-left: auto; flex-wrap: wrap; }
.nav a {
  padding: .4rem .55rem; border-radius: 8px; color: var(--muted); font-size: .84rem;
}
.nav a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.header-actions { display: flex; align-items: center; gap: .45rem; }
.lang-switch {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden;
}
.lang-btn {
  border: 0; background: transparent; color: var(--muted);
  padding: .28rem .55rem; font-size: .75rem; cursor: pointer; font-weight: 600;
}
.lang-btn.active { background: var(--accent); color: #041018; }
.nav-toggle {
  display: none; width: 40px; height: 36px; border: 1px solid var(--line);
  border-radius: 8px; background: transparent; padding: 0;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav-toggle span { display: block; width: 16px; height: 2px; background: var(--text); border-radius: 2px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  padding: .65rem 1.05rem; border-radius: 10px; border: 1px solid transparent;
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
  font-family: inherit; color: inherit;
}
.btn.sm { padding: .42rem .75rem; font-size: .82rem; }
.btn.primary {
  background: linear-gradient(135deg, #2563eb, #0891b2); color: #fff;
  box-shadow: 0 6px 18px rgba(37, 99, 235, .28);
}
.btn.primary:hover { transform: translateY(-1px); }
.btn.ghost {
  background: transparent; border-color: var(--line); color: var(--text);
}
.btn.ghost:hover { border-color: rgba(61,184,255,.45); background: var(--accent-soft); }

main { max-width: var(--max); margin: 0 auto; padding: 0 1.1rem 3rem; }

.hero {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 1.5rem;
  align-items: stretch; padding: 1.6rem 0 1.2rem;
}
.eyebrow { margin: 0 0 .55rem; color: var(--accent); font-size: .78rem; font-weight: 600; letter-spacing: .04em; }
.hero h1 {
  margin: 0 0 .75rem; font-size: clamp(1.45rem, 2.5vw, 2.05rem);
  line-height: 1.25; letter-spacing: -.01em;
}
.lede { margin: 0 0 1.1rem; color: var(--muted); font-size: .95rem; max-width: 40rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 1.1rem; }
.hero-metrics {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem;
}
.hero-metrics li {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 10px; padding: .65rem .7rem;
}
.hero-metrics strong { display: block; font-size: 1.2rem; }
.hero-metrics span { display: block; margin-top: .15rem; color: var(--faint); font-size: .72rem; }

.hero-panel {
  background: linear-gradient(180deg, #172238, #121a2b);
  border: 1px solid var(--line); border-radius: 14px; padding: .9rem; box-shadow: var(--shadow);
}
.panel-head { display: flex; align-items: center; gap: .45rem; color: var(--muted); font-size: .78rem; margin-bottom: .75rem; }
.panel-head .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(110,231,183,.18);
}
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; }
.panel-grid article {
  background: rgba(255,255,255,.03); border: 1px solid var(--line);
  border-radius: 10px; padding: .7rem .75rem;
}
.panel-grid h3 { margin: 0 0 .25rem; font-size: .88rem; }
.panel-grid p { margin: 0; color: var(--faint); font-size: .75rem; line-height: 1.4; }
.panel-foot {
  margin: .75rem 0 0; padding-top: .65rem; border-top: 1px dashed var(--line);
  color: var(--faint); font-size: .75rem;
}

.section-head { margin: 1.6rem 0 1rem; }
.section-head.compact { margin-bottom: .8rem; }
.section-head h2 { margin: 0 0 .35rem; font-size: clamp(1.2rem, 2vw, 1.45rem); }
.section-head p { margin: 0; color: var(--muted); font-size: .9rem; }

.global-grid article, .contact-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: .9rem 1rem;
}
.global-grid h3 { margin: 0 0 .5rem; font-size: .92rem; }

.global-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.global-grid p { margin: 0; color: var(--muted); font-size: .86rem; }

.filter-bar { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: .85rem; }
.chip {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  border-radius: 999px; padding: .35rem .75rem; font-size: .8rem; cursor: pointer; font-family: inherit;
}
.chip:hover { color: var(--text); border-color: rgba(61,184,255,.35); }
.chip.active { color: #041018; background: var(--accent); border-color: var(--accent); font-weight: 600; }

.module-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; }
.mod {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .95rem 1rem; transition: border-color .15s ease, transform .15s ease, opacity .2s ease;
}
.mod:hover { border-color: rgba(61,184,255,.35); transform: translateY(-2px); }
.mod.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(37,99,235,.12), transparent 55%), var(--bg-card);
  border-color: rgba(61,184,255,.28);
}
.mod.soft { opacity: .92; }
.mod.is-hidden { display: none; }
.mod-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: .45rem; }
.mod-icon {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-size: .9rem;
}
.mod-badge {
  font-size: .68rem; font-weight: 700; color: #083344; background: #67e8f9;
  padding: .15rem .45rem; border-radius: 999px;
}
.mod h3 { margin: 0 0 .35rem; font-size: 1.02rem; }
.mod-lead { margin: 0 0 .55rem; color: var(--muted); font-size: .86rem; }
.mod ul { margin: 0; padding-left: 1.05rem; color: #c5d0e2; font-size: .82rem; }
.mod li + li { margin-top: .28rem; }
.mod li strong { color: #fff; font-weight: 650; }

.flow-steps {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem;
}
.flow-steps li {
  display: flex; gap: .7rem; background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .9rem;
}
.flow-steps .n {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; background: var(--accent-soft); color: var(--accent);
  font-weight: 700; font-size: .85rem;
}
.flow-steps h3 { margin: 0 0 .25rem; font-size: .95rem; }
.flow-steps p { margin: 0; color: var(--muted); font-size: .84rem; }

.term-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; }
.term-grid article {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: .85rem .9rem;
}
.term-grid h3 { margin: 0 0 .3rem; font-size: .92rem; }
.term-grid p { margin: 0; color: var(--muted); font-size: .82rem; }

.faq-list details {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .75rem 1rem; margin-bottom: .55rem;
}
.faq-list summary { cursor: pointer; font-weight: 650; }
.faq-list p { margin: .55rem 0 0; color: var(--muted); font-size: .9rem; }

.cta-band { margin-top: 1.6rem; }
.cta-inner {
  background: linear-gradient(135deg, rgba(37,99,235,.18), rgba(8,145,178,.12));
  border: 1px solid rgba(61,184,255,.28); border-radius: 14px; padding: 1.25rem 1.2rem;
}
.cta-inner h2 { margin: 0 0 .4rem; font-size: 1.25rem; }
.cta-inner p { margin: 0 0 .9rem; color: var(--muted); font-size: .9rem; }


.site-footer {
  max-width: var(--max); margin: 0 auto; padding: 1.15rem 1.1rem 1.7rem;
  border-top: 1px solid var(--line);
}
.footer-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: .55rem 1rem;
  color: var(--faint); font-size: .78rem;
}
.icp-link { display: inline-flex; align-items: center; gap: .35rem; color: var(--muted); }
.icp-link:hover { color: var(--text); }
.icp-icon {
  display: inline-grid; place-items: center; min-width: 1.6rem; height: 1.15rem;
  padding: 0 .25rem; border-radius: 4px; font-size: .62rem; font-weight: 700;
  background: rgba(255,255,255,.06); border: 1px solid var(--line); color: var(--faint);
}
.police-link .icp-icon { background: rgba(61,184,255,.1); color: var(--accent); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.phone-num {
  display: inline-block; font-size: clamp(1.45rem, 3vw, 1.8rem); font-weight: 700;
  letter-spacing: .02em; color: var(--accent); margin-bottom: .35rem;
}
.phone-num:hover { text-decoration: underline; }
.contact-note { margin: .35rem 0 0; color: var(--muted); font-size: .84rem; }
.qr-card figure { margin: 0; text-align: center; }
.qr-card img {
  width: min(220px, 70%); height: auto; margin: 0 auto; border-radius: 10px;
  background: #fff; padding: .45rem; border: 1px solid var(--line);
}
.qr-card figcaption { margin-top: .55rem; color: var(--muted); font-size: .82rem; }

.modal[hidden] { display: none !important; }
.modal {
  position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 1rem;
}
.modal-backdrop {
  position: absolute; inset: 0; background: rgba(3, 8, 18, .72); backdrop-filter: blur(4px);
}
.modal-dialog {
  position: relative; z-index: 1; width: min(640px, 100%);
  background: #101827; border: 1px solid var(--line); border-radius: 16px;
  padding: 1.2rem 1.2rem 1.3rem; box-shadow: var(--shadow);
}
.modal-close {
  position: absolute; top: .55rem; right: .65rem; width: 36px; height: 36px;
  border: 0; border-radius: 8px; background: transparent; color: var(--muted);
  font-size: 1.4rem; cursor: pointer; line-height: 1;
}
.modal-close:hover { background: rgba(255,255,255,.06); color: var(--text); }
.modal-dialog h2 { margin: 0 1.5rem .35rem 0; font-size: 1.2rem; }
.modal-lead { margin: 0 0 1rem; color: var(--muted); font-size: .9rem; }
.modal-contacts {
  grid-template-columns: 1fr;
  gap: .85rem;
}
.modal-contacts .qr-card figure { margin: 0; text-align: center; }
.modal-contacts .phone-card { text-align: center; }
.modal-contacts .phone-num { display: inline-block; }
.modal-dialog { width: min(420px, 100%); }


@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: 1fr 1fr; }
  .mod.featured { grid-column: span 2; }
  .term-grid { grid-template-columns: 1fr 1fr; }
  .flow-steps, .global-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav, .header-actions .btn { display: none; }
  .site-header.nav-open .nav {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; left: 1.1rem; right: 1.1rem; top: 100%;
    background: #101827; border: 1px solid var(--line); border-radius: 12px;
    padding: .6rem; margin-top: .35rem;
  }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .module-grid, .term-grid, .contact-grid, .panel-grid { grid-template-columns: 1fr; }
  .mod.featured { grid-column: auto; }
  .hero-metrics { grid-template-columns: 1fr; }
  .header-actions { gap: .35rem; }
}

.breadcrumbs {
  margin: .85rem 0 0;
  font-size: .78rem;
  color: var(--muted);
}
.breadcrumbs ol {
  display: flex; flex-wrap: wrap; gap: .35rem .55rem;
  list-style: none; margin: 0; padding: 0;
}
.breadcrumbs li:not(:last-child)::after {
  content: "/"; margin-left: .55rem; opacity: .45;
}
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }

.about-entity {
  margin: 1.4rem 0 0;
  padding: 1.15rem 1.2rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(16, 24, 39, .72);
}
.about-entity .section-head { margin-bottom: .65rem; }
.answer-blurb {
  margin: 0 0 1rem;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--text);
  max-width: 72ch;
}
.geo-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .7rem;
  margin: 0;
}
.geo-facts > div {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .7rem .8rem;
  background: rgba(255,255,255,.02);
}
.geo-facts dt {
  margin: 0 0 .25rem;
  font-size: .72rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 650;
}
.geo-facts dd {
  margin: 0;
  font-size: .88rem;
  line-height: 1.45;
  color: var(--text);
}
@media (max-width: 960px) {
  .geo-facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .geo-facts { grid-template-columns: 1fr; }
}