:root {
  --ink: #17202a;
  --muted: #607080;
  --line: #dfe5ec;
  --soft: #f5f7fa;
  --paper: #ffffff;
  --accent: #0b7f83;
  --accent-dark: #095f62;
  --warm: #a35d00;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); position: sticky; top: 0; z-index: 5; }
.topbar { display: flex; align-items: center; gap: 28px; min-height: 68px; }
.brand { font-size: 25px; font-weight: 800; color: var(--accent-dark); white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.site-nav a { padding: 8px 12px; border-radius: 6px; color: #344054; white-space: nowrap; font-size: 15px; }
.site-nav a.active, .site-nav a:hover { background: #e7f4f4; color: var(--accent-dark); }
.page-head { background: linear-gradient(180deg, #eef8f8 0%, #ffffff 100%); border-bottom: 1px solid var(--line); }
.page-head .container { padding: 42px 0 34px; }
.eyebrow { margin: 0 0 8px; color: var(--warm); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0; }
h1 { margin: 0; font-size: clamp(30px, 5vw, 52px); line-height: 1.12; letter-spacing: 0; }
.page-head p:last-child { max-width: 780px; margin: 14px 0 0; color: var(--muted); font-size: 17px; }
.home-layout { padding: 30px 0 48px; }
.lead-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 18px; align-items: stretch; }
.text-lead-grid { margin-bottom: 22px; }
.side-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.content-card { display: block; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); min-width: 0; box-shadow: 0 1px 2px rgba(16, 24, 40, .04); }
.content-card-large { min-height: 100%; padding: 26px; background: linear-gradient(135deg, #eef8f8 0%, #ffffff 70%); border-color: #c8dddd; }
.content-card-large .card-body { padding: 0; }
.thumb { min-width: 0; }
.thumb img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; background: var(--soft); }
.content-card-large .thumb img { aspect-ratio: 16 / 8.8; border-radius: 0; }
.card-body { min-width: 0; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 7px; }
.meta span:first-child { color: var(--accent-dark); font-weight: 700; }
.content-card h2 { margin: 0; font-size: 18px; line-height: 1.42; letter-spacing: 0; }
.content-card-large h2 { font-size: clamp(25px, 3vw, 34px); line-height: 1.24; }
.content-card p { margin: 8px 0 0; color: #4b5c6f; font-size: 15px; }
.content-card-large p { margin-top: 12px; font-size: 17px; }
.category-links { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 30px; }
.category-links a { padding: 8px 13px; border: 1px solid var(--line); border-radius: 6px; color: #263542; background: #fff; }
.category-links a:hover { border-color: var(--accent); color: var(--accent-dark); }
.category-block { padding: 24px 0; border-top: 1px solid var(--line); }
.section-title { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 14px; }
.section-title h2 { margin: 0; font-size: 25px; line-height: 1.2; }
.section-title a { color: var(--accent-dark); font-weight: 700; }
.content-grid { display: grid; gap: 16px; }
.compact-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.list-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 0 0 52px; }
.list-grid .content-card { overflow: hidden; }
.list-grid .card-body { padding: 0; }
.list-grid .thumb img { aspect-ratio: 16 / 9; border-radius: 0; }
.list-grid .content-card-text { padding: 18px; }
.list-grid .content-card-text .card-body { padding: 0; }
.breadcrumb { display: flex; gap: 9px; align-items: center; color: var(--muted); font-size: 14px; margin: 22px 0 20px; }
.breadcrumb a { color: var(--accent-dark); }
.site-footer { border-top: 1px solid var(--line); background: #f7f9fb; color: var(--muted); }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; font-size: 14px; }
.footer-grid a { color: var(--accent-dark); }
.footer-grid p { margin: 0; }
.app-hero { position: relative; min-height: calc(100vh - 125px); overflow: hidden; background: #eef8f8; }
.app-hero-bg { position: absolute; inset: 0; background-image: linear-gradient(90deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.76) 40%, rgba(255,255,255,.18) 100%), url("../images/app-bg.png"); background-size: cover; background-position: center; }
.app-hero-inner { position: relative; min-height: calc(100vh - 125px); display: flex; align-items: center; padding: 56px 0; }
.app-panel { max-width: 640px; }
.app-panel h1 { color: var(--ink); }
.app-lead { margin: 18px 0 0; color: #405364; font-size: 19px; line-height: 1.85; }
.app-status { display: inline-flex; align-items: center; margin-top: 28px; padding: 10px 16px; border: 1px solid #b8d9d9; border-radius: 999px; color: var(--accent-dark); background: rgba(255,255,255,.82); font-weight: 700; }
@media (max-width: 900px) {
  .topbar { display: block; padding: 14px 0 10px; }
  .brand { display: inline-block; margin-bottom: 8px; }
  .lead-grid, .compact-grid, .list-grid { grid-template-columns: 1fr; }
  .side-list { grid-template-columns: 1fr; }
  .footer-grid { display: block; padding: 14px 0; }
  .footer-grid p + p { margin-top: 6px; }
  .app-hero-bg { background-image: linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.82) 58%, rgba(255,255,255,.42) 100%), url("../images/app-bg.png"); background-position: center right; }
  .app-hero-inner { align-items: flex-start; padding-top: 46px; }
}
@media (max-width: 540px) {
  .container { width: min(100% - 24px, 1180px); }
  .page-head .container { padding: 32px 0 26px; }
  .content-card { grid-template-columns: 1fr; }
  .thumb img { aspect-ratio: 16 / 9; }
  .section-title { align-items: start; flex-direction: column; gap: 6px; }
}