:root {
  --blue: #0030f8;
  --blue-deep: #0026c7;
  --blue-soft: #eef2ff;
  --blue-mid: #d6e0ff;
  --ink: #12141a;
  --muted: #5b6170;
  --line: rgba(18, 20, 26, 0.1);
  --bg: #f6f7fb;
  --white: #ffffff;
  --shadow: 0 12px 32px rgba(0, 48, 248, 0.08);
  --radius: 16px;
  --header-h: 72px;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --max: 1140px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.75; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-deep); }
ul { list-style: none; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.site-header { position: sticky; top: 0; z-index: 80; height: var(--header-h); background: rgba(255,255,255,.92); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0; }
.brand:hover { color: var(--ink); }
.brand img { height: 40px; width: auto; border-radius: 6px; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: .04em; }
.brand-sub { font-size: 11px; color: var(--muted); }
.nav-wrap { display: flex; align-items: center; gap: 6px; }
.nav { display: flex; align-items: center; gap: 2px; }
.nav a, .nav-item > button {
  color: var(--ink); font: inherit; font-size: 14px; background: none; border: 0; cursor: pointer;
  padding: 8px 10px; border-radius: 8px; display: inline-flex; align-items: center; gap: 4px;
}
.nav a:hover, .nav a.is-active, .nav-item > button:hover, .nav-item.has-active > button, .nav-item.is-open > button {
  color: var(--blue); background: var(--blue-soft);
}
.caret { width: 7px; height: 7px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); }
.nav-item { position: relative; }
.dropdown { display: none; position: absolute; top: calc(100% + 6px); left: 0; min-width: 220px; background: var(--white); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; }
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown, .nav-item.is-open .dropdown { display: block; }
.dropdown a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--ink); font-size: 13px; }
.dropdown a:hover, .dropdown a.is-active { background: var(--blue-soft); color: var(--blue); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: 999px; font-size: 14px; font-weight: 600; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); color: #fff; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.header-cta { margin-left: 8px; padding: 8px 16px; }
.menu-btn { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 10px; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu-btn span { display: block; width: 18px; height: 1.5px; background: var(--ink); }

.hero { padding: 72px 0 80px; background: linear-gradient(180deg, #fff 0%, var(--blue-soft) 100%); position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: .12em; margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--blue); }
h1,h2,h3 { letter-spacing: .02em; line-height: 1.3; }
.hero h1 { font-size: clamp(32px, 4.6vw, 50px); margin-bottom: 16px; }
.lead { font-size: 18px; color: var(--muted); max-width: 38em; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-panel { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 26px; box-shadow: var(--shadow); }
.hero-panel h2 { font-size: 16px; margin-bottom: 14px; }
.hero-panel ol { display: grid; gap: 10px; }
.hero-panel li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; font-size: 14px; color: var(--muted); }
.step-num { width: 28px; height: 28px; border-radius: 50%; background: var(--blue-soft); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; }

.section { padding: 76px 0; }
.section-white { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); margin: 8px 0 12px; }
.section-head p { color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; min-height: 220px; transition: .2s ease; }
.section-white .card { background: var(--bg); }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--blue-mid); }
.card-kicker { color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .08em; margin-bottom: 8px; }
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; flex: 1; }
.card .more { margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--blue); }

.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.process-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 16px; }
.process-item .n { color: var(--blue); font-weight: 700; font-size: 18px; margin-bottom: 6px; }
.process-item h3 { font-size: 16px; margin-bottom: 6px; }
.process-item p { font-size: 13px; color: var(--muted); }

.partners { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.partners li { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-size: 14px; }

.cta-band { background: var(--blue); color: #fff; padding: 68px 0; }
.cta-band .eyebrow, .cta-band .eyebrow::before { color: #fff; background: #fff; }
.cta-band .eyebrow { color: #fff; }
.cta-band .eyebrow::before { background: #fff; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 34px); margin: 8px 0 12px; }
.cta-band p { color: rgba(255,255,255,.86); max-width: 38em; margin-bottom: 22px; }
.cta-band .btn-primary { background: #fff; color: var(--blue); }
.cta-band .btn-primary:hover { background: var(--blue-soft); color: var(--blue-deep); }

.page-hero { padding: 56px 0 40px; background: linear-gradient(180deg, #fff, var(--blue-soft)); border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); margin: 8px 0 12px; }
.page-hero p { color: var(--muted); max-width: 46em; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--blue); }

.prose { max-width: 780px; }
.prose h2 { font-size: 26px; margin: 8px 0 14px; }
.prose h3 { font-size: 19px; margin: 26px 0 10px; }
.prose p, .prose li { color: var(--muted); }
.prose p { margin-bottom: 14px; }
.prose ul, .prose ol { margin: 0 0 16px 1.2em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); }
.split { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: start; }
.note { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--blue); border-radius: 12px; padding: 18px; font-size: 14px; color: var(--muted); }
.note strong { display: block; color: var(--ink); margin-bottom: 6px; }
.table-wrap { overflow-x: auto; margin: 16px 0 24px; }
table { width: 100%; border-collapse: collapse; background: #fff; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
th { background: var(--blue-soft); color: var(--ink); font-weight: 600; }

.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--muted); margin-top: 8px; font-size: 14px; }

.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 32px; }
.contact-item { margin-bottom: 16px; }
.contact-item h3 { font-size: 14px; margin-bottom: 4px; }
.contact-item p, .contact-item a { color: var(--muted); }
.qr { width: 240px; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 8px; }
form { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.form-row { margin-bottom: 14px; }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
input, select, textarea { width: 100%; border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 11px 12px; font: inherit; color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(0,48,248,.2); border-color: var(--blue); background: #fff; }
textarea { min-height: 130px; resize: vertical; }
.form-hint { font-size: 12px; color: var(--muted); margin-top: 10px; }
.form-success { display: none; background: var(--blue-soft); color: var(--blue-deep); padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; font-size: 14px; }
.form-success.is-on { display: block; }
.form-error { display: none; background: #fde8e8; color: #8a1f1f; padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; font-size: 14px; }
.form-error.is-on { display: block; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.tool-list { display: grid; gap: 16px; }
.tool { display: block; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.tool:hover { border-color: var(--blue-mid); box-shadow: var(--shadow); color: inherit; }
.tool h3 { font-size: 18px; margin-bottom: 6px; color: var(--ink); }
.tool p { color: var(--muted); font-size: 14px; }
.tool .src { margin-top: 8px; font-size: 12px; color: var(--blue); font-weight: 600; }

.site-footer { background: #0d1324; color: rgba(255,255,255,.78); padding: 52px 0 24px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 32px; }
.site-footer .brand { color: #fff; margin-bottom: 12px; }
.site-footer a { color: rgba(255,255,255,.78); }
.site-footer a:hover { color: #fff; }
.site-footer h3 { color: #fff; font-size: 13px; letter-spacing: .08em; margin-bottom: 10px; }
.site-footer li { margin: 6px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 16px; display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: space-between; font-size: 12px; }
.footer-bottom a { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 980px) {
  .menu-btn { display: flex; }
  .nav-wrap { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 12px 20px 20px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .nav-wrap.is-open { display: flex; }
  .nav { flex-direction: column; align-items: stretch; }
  .header-cta { margin: 8px 0 0; width: 100%; }
  .dropdown { position: static; box-shadow: none; border: 0; padding: 0 0 0 10px; display: none; }
  .nav-item.is-open .dropdown { display: block; }
  .hero-grid, .split, .contact-grid, .footer-grid, .cards, .cards-2, .process { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 56px; }
  .section { padding: 56px 0; }
  .brand-sub { display: none; }
}

.brand > span { display: flex; flex-direction: column; line-height: 1.25; }
.muted { color: var(--muted); font-size: 14px; }
.section-alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
details.faq { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; }
details.faq summary { cursor: pointer; font-weight: 600; color: var(--ink); }
details.faq p { color: var(--muted); margin-top: 8px; font-size: 14px; }

.article-list { display: grid; gap: 16px; }
.article-item { display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; color: inherit; }
.article-item:hover { border-color: var(--blue-mid); box-shadow: var(--shadow); color: inherit; transform: translateY(-2px); }
.article-item .article-meta { font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.article-item h2 { font-size: 22px; margin: 0 0 8px; color: var(--ink); }
.article-item p { color: var(--muted); font-size: 15px; }
.article-item .more { display: inline-block; margin-top: 12px; }
.article-meta { font-size: 13px; color: var(--muted); margin: 0 0 22px; }
.prose .article-meta { color: var(--muted); }
.related { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); }
.related h2 { font-size: 20px; margin-bottom: 12px; }
.related ul { margin-left: 1.2em; list-style: disc; }
.related li { margin: 6px 0; }

#lianxi, #time, #path, #report, #query-faq, #consult, #review, #fda-faq, #docs {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.qa-toolbar { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin-bottom: 16px; }
.qa-search-wrap { flex: 1; min-width: 240px; }
.qa-search-wrap input { width: 100%; }
.qa-count { font-size: 14px; color: var(--muted); }
.qa-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.qa-filter { border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px; padding: 6px 14px; font: inherit; font-size: 13px; cursor: pointer; }
.qa-filter:hover { border-color: var(--blue); color: var(--blue); }
.qa-filter.is-on { background: var(--blue); color: #fff; border-color: var(--blue); }
.qa-item.is-hidden { display: none; }
.qa-kicker { display: flex; align-items: center; gap: 8px; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .06em; margin: 10px 0 8px; }
.qa-tag { display: inline-block; background: var(--blue-soft); color: var(--blue-deep); border-radius: 999px; padding: 1px 8px; font-size: 11px; font-weight: 600; letter-spacing: 0; }
.qa-body p, .qa-body li { color: var(--muted); font-size: 15px; }
.qa-body p { margin: 0 0 10px; }
.qa-body ul { margin: 0 0 10px 1.2em; list-style: disc; }
.qa-body li { margin: 4px 0; }
.qa-empty { display: none; background: #fff; border: 1px dashed var(--line); border-radius: 12px; padding: 28px 20px; text-align: center; color: var(--muted); }
.qa-empty.is-on { display: block; }
.faq-lead { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; margin-bottom: 36px; }
@media (max-width: 980px) { .faq-lead { grid-template-columns: 1fr; } }

.article-toolbar { margin-bottom: 16px; }
.article-group { margin-bottom: 40px; }
.article-group h2 { font-size: 22px; margin: 0 0 14px; }
.article-group h2 .qa-count { font-size: 14px; font-weight: 500; color: var(--muted); }
.article-group.is-hidden { display: none; }
.article-item.is-hidden { display: none; }
input#article-search {
  width: 100%; border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 14px; font: inherit; background: #fff;
}
input#article-search:focus { outline: 2px solid var(--blue-mid); border-color: var(--blue); }

/* Language switcher and English layout helpers */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  font-size: 13px;
  flex-shrink: 0;
  white-space: nowrap;
}
.lang-switch a { color: var(--muted); padding: 4px 2px; border-radius: 0; }
.lang-switch a:hover { color: var(--blue); background: none; }
.lang-switch a.is-current { color: var(--blue); font-weight: 700; }
.lang-sep { color: var(--muted); opacity: .55; }
.footer-bottom .lang-switch { margin-left: 0; }
html[lang="en"] body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}
#contact { scroll-margin-top: calc(var(--header-h) + 16px); }
@media (max-width: 1100px) {
  .nav a, .nav-item > button { padding: 8px 7px; font-size: 13px; }
}
@media (max-width: 980px) {
  .lang-switch { margin: 10px 0 0; }
}