*,
*::before,
*::after { box-sizing: border-box; }
:root {
  --blue:#1453A6; --deep-blue:#102B52; --pale-blue:#EAF3FF;
  --red:#C62835; --pale-red:#FCECEF; --yellow:#F2C94C; --pale-yellow:#FFF5CE;
  --canvas:#F7FAFE; --white:#FFFFFF; --ink:#17243A; --body:#29364B;
  --muted:#566477; --line:#D9E3EF; --max:1200px;
}
html { scroll-behavior:smooth; }
body {
  margin:0; background:var(--canvas); color:var(--body);
  font-family:system-ui,-apple-system,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.8; overflow-wrap:break-word;
}
img { display:block; max-width:100%; width:auto; height:auto; object-fit:contain; }
a { color:var(--blue); text-decoration-thickness:1px; text-underline-offset:3px; overflow-wrap:anywhere; }
a:hover { color:var(--red); }
button { font:inherit; }
:focus-visible { outline:3px solid var(--red); outline-offset:3px; }
[hidden] { display:none !important; }
.wrap { width:100%; max-width:var(--max); margin-inline:auto; padding-inline:30px; min-width:0; }
.skip-link { position:absolute; left:12px; top:-60px; z-index:100; background:var(--deep-blue); color:white; padding:8px 12px; border-radius:6px; }
.skip-link:focus { top:8px; color:white; }
.site-header { position:relative; z-index:20; background:var(--white); border-bottom:1px solid var(--line); }
.header-bar { min-height:76px; display:grid; grid-template-columns:auto minmax(0,1fr) auto; align-items:center; gap:22px; }
.brand { display:inline-flex; align-items:center; gap:12px; color:var(--deep-blue); text-decoration:none; min-width:0; }
.brand-image { max-width:175px; max-height:36px; width:auto; height:auto; }
.brand-word { font-size:25px; line-height:1; font-weight:850; letter-spacing:-.04em; color:var(--blue); }
.brand-word span { color:var(--deep-blue); }
.brand-tagline { color:var(--muted); font-size:12px; line-height:1.3; }
.primary-nav { display:flex; justify-content:center; align-items:center; gap:clamp(12px,1.8vw,24px); min-width:0; }
.primary-nav a,.header-actions a { min-height:44px; display:inline-flex; align-items:center; padding:7px 2px; color:var(--body); font-size:14px; font-weight:650; text-decoration:none; border-bottom:2px solid transparent; }
.primary-nav a[aria-current="page"],.header-actions a[aria-current="page"] { color:var(--blue); border-bottom-color:var(--red); }
.header-actions { display:flex; align-items:center; gap:14px; }
.header-actions .guide-link { color:var(--blue); }
.menu-toggle { min-height:44px; padding:8px 15px; border:1px solid var(--blue); border-radius:8px; background:var(--blue); color:white; font-size:14px; font-weight:700; cursor:pointer; }
.menu-toggle:hover { background:var(--deep-blue); }
.mobile-toggle-label { display:none; }
.topic-panel { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:22px 30px; padding-top:24px; padding-bottom:28px; border-top:1px solid var(--line); }
.topic-group { min-width:0; background:#F8FBFF; border:1px solid var(--line); border-radius:10px; padding:16px 18px; }
.topic-group h2 { margin:0 0 10px; font-size:16px; color:var(--deep-blue); }
.topic-group ul,.footer-group ul { list-style:none; padding:0; margin:0; }
.topic-group ul { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px 18px; }
.topic-group li { min-width:0; display:flex; flex-direction:column; gap:1px; }
.topic-group li a { font-size:14px; font-weight:700; text-decoration:none; }
.topic-group li span { font-size:12px; line-height:1.5; color:var(--muted); overflow-wrap:anywhere; }
.page-main { padding-top:26px; padding-bottom:72px; }
.page-intro { max-width:900px; margin-bottom:34px; }
.breadcrumbs { display:flex; flex-wrap:wrap; gap:7px; align-items:center; color:var(--muted); font-size:13px; margin-bottom:17px; }
.breadcrumbs a { text-decoration:none; }
.eyebrow { margin:0 0 8px; color:var(--blue); font-size:12px; font-weight:800; letter-spacing:.08em; }
h1,h2,h3 { color:var(--ink); line-height:1.3; overflow-wrap:anywhere; }
h1 { font-size:clamp(27px,3vw,38px); margin:0 0 14px; letter-spacing:-.025em; }
h2 { font-size:clamp(21px,2.2vw,26px); margin:0 0 13px; }
h3 { font-size:19px; margin:0 0 8px; }
p { margin:0 0 16px; }
.page-lead { max-width:780px; margin:0 0 20px; font-size:17px; line-height:1.8; color:#34445B; }
.article-index { display:flex; flex-wrap:wrap; align-items:center; gap:8px 14px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:11px 0; font-size:13px; }
.article-index span { color:var(--muted); font-weight:700; }
.article-index a { text-decoration:none; }
.reading-layout,.article-body { min-width:0; }
.reading-layout p { max-width:78ch; }
.content-section,.matrix-card,.dossier-item,.timeline-item,.scene-entry,.storyboard-step,.step-item,
.evidence-panel,.route-panel,.path-panel,.check-panel,.index-panel,.scenario-panel,.service-section,
.policy-section,.about-section,.split-section { min-width:0; max-width:100%; margin-bottom:28px; }
.content-section { padding-bottom:18px; border-bottom:1px solid var(--line); }
.matrix-card { padding:20px 22px; border:1px solid var(--line); border-left:4px solid var(--blue); background:white; border-radius:10px; }
.matrix-card:nth-child(even) { border-left-color:var(--yellow); }
.dossier-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0 26px; }
.dossier-item { padding:20px 0 8px; border-top:1px solid var(--line); }
.dossier-item:first-child { border-top:0; }
.layout-split { display:grid; grid-template-columns:minmax(0,1fr) 245px; gap:34px; align-items:start; }
.reading-aside,.inline-note { min-width:0; background:var(--pale-yellow); border:1px solid #E8D99C; border-radius:10px; padding:18px; color:#29364B; }
.reading-aside { position:sticky; top:18px; }
.reading-aside h2 { font-size:18px; }
.timeline-list { border-left:2px solid #BCD0E8; margin-left:12px; padding-left:26px; }
.timeline-item { position:relative; padding-bottom:12px; }
.timeline-item::before { content:""; position:absolute; left:-34px; top:8px; width:14px; height:14px; border-radius:50%; background:var(--red); border:3px solid white; box-shadow:0 0 0 1px var(--red); }
.scene-entry { padding:18px 22px; background:white; border-radius:10px; border:1px solid var(--line); }
.scene-entry:nth-child(even) { margin-left:7%; background:#F2F7FD; }
.storyboard-step { padding:20px 22px; border-top:1px solid var(--line); }
.storyboard-step:first-child { border-top:0; }
.storyboard-step h2::before { content:"观察"; color:var(--red); font-size:12px; margin-right:9px; letter-spacing:.08em; }
.step-list { margin:0; padding:0; list-style:none; counter-reset:steps; }
.step-list>li { counter-increment:steps; position:relative; padding:0 0 0 58px; margin-bottom:24px; min-width:0; }
.step-list>li::before { content:counter(steps,decimal-leading-zero); position:absolute; left:0; top:0; color:var(--red); font-size:20px; font-weight:850; }
.step-item { padding-bottom:18px; border-bottom:1px solid var(--line); }
.evidence-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.evidence-panel { background:white; border:1px solid var(--line); border-radius:10px; padding:20px; }
.evidence-panel:nth-child(odd) { background:#F0F6FF; }
.route-stack { display:grid; gap:16px; }
.route-panel { border:1px solid var(--line); border-radius:10px; padding:22px; background:white; }
.route-panel:nth-child(odd) { border-top:4px solid var(--blue); }
.route-panel:nth-child(even) { border-top:4px solid var(--yellow); }
.path-grid,.index-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
.path-panel { background:white; border:1px solid var(--line); border-radius:10px; padding:20px; }
.path-panel:nth-child(odd) { background:#F0F6FF; }
.index-panel { padding:20px; border-left:3px solid var(--blue); background:white; border-radius:0 10px 10px 0; }
.scenario-list { display:grid; gap:14px; }
.scenario-panel { padding:20px 22px; background:white; border:1px solid var(--line); border-radius:10px; }
.check-panel { padding:18px 20px 4px; border-bottom:1px dashed #B9C9DC; }
.service-section { padding:20px 22px; border-radius:10px; background:white; border:1px solid var(--line); }
.service-section:nth-child(even) { background:#F1F6FD; }
.policy-section { padding:4px 0 18px; border-bottom:1px solid var(--line); }
.about-section { padding:22px 24px; background:white; border-left:4px solid var(--blue); border-radius:0 10px 10px 0; }
.about-section:nth-child(even) { border-left-color:var(--yellow); }
.inline-note { margin:12px 0 28px; }
.inline-note strong { display:block; margin-bottom:7px; color:var(--deep-blue); }
.page-media { margin:0 0 28px; }
figure { margin:0; padding:12px; max-width:100%; min-width:0; }
figure img { display:block; max-width:100%; width:auto; height:auto; object-fit:contain; margin-inline:auto; }
.support-image { width:min(100%,440px); max-height:270px; }
.support-image img { max-height:250px; }
.related-links { margin-top:48px; padding:22px 24px; background:var(--pale-blue); border-radius:10px; }
.related-links h2 { font-size:20px; }
.related-links ul { display:flex; flex-wrap:wrap; gap:10px 24px; margin:0; padding-left:20px; }
.faq-list { max-width:880px; }
.faq-item { padding:22px 0; border-bottom:1px solid var(--line); }
.faq-item h2 { font-size:19px; }
.faq-item p { max-width:78ch; margin-bottom:0; }
.site-footer { background:var(--deep-blue); color:#E9F1FC; padding:44px 0 22px; }
.site-footer a { color:#E9F1FC; }
.site-footer a:hover { color:#FFE18A; }
.footer-main { display:grid; grid-template-columns:minmax(180px,.8fr) minmax(0,2fr); gap:34px; }
.footer-wordmark { color:white; font-size:25px; font-weight:850; text-decoration:none; }
.footer-brand p { max-width:250px; color:#D2DEEE; font-size:14px; }
.footer-groups { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:22px; }
.footer-group { min-width:0; }
.footer-group h2 { color:white; font-size:15px; margin-bottom:10px; }
.footer-group li { margin-bottom:5px; font-size:13px; }
.footer-group a { text-decoration:none; }
.footer-notes { grid-column:1/-1; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; padding-top:22px; border-top:1px solid #49617F; }
.footer-notes p { color:#D2DEEE; font-size:13px; margin:0; }
.footer-bottom { display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px 20px; padding-top:20px; margin-top:22px; border-top:1px solid #49617F; color:#C5D3E5; font-size:12px; }
.mobile-quickbar { display:none; }

/* 首页使用入口、图文、流程与核验区块交替组织。 */
.home-main { padding-bottom:80px; }
.home-hero { display:grid; grid-template-columns:minmax(0,1fr); gap:42px; align-items:center; padding-top:46px; padding-bottom:44px; }
.home-hero.has-media { grid-template-columns:minmax(0,1fr) minmax(0,1fr); }
.hero-copy,.feature-copy,.culture-main,.creation-copy,.verification-copy,.pocket-copy { min-width:0; }
.hero-copy h1 { font-size:42px; margin-bottom:10px; }
.hero-copy h2 { max-width:620px; font-size:clamp(25px,3vw,34px); line-height:1.35; margin-bottom:18px; }
.hero-copy p { max-width:620px; }
.hero-media,.feature-media,.creation-media { min-width:0; display:flex; justify-content:center; }
.hero-image { width:min(100%,500px); max-height:330px; }
.hero-image img { max-height:310px; }
.text-links { display:flex; flex-wrap:wrap; gap:10px 20px; margin-top:18px; }
.text-links a { font-weight:750; text-decoration:none; border-bottom:1px solid currentColor; }
.home-section { padding-top:56px; padding-bottom:56px; }
.section-heading { max-width:720px; margin-bottom:26px; }
.section-heading p:last-child { color:var(--muted); }
.entry-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.entry-grid a { min-width:0; padding:22px 20px; text-decoration:none; border-right:1px solid var(--line); color:var(--body); }
.entry-grid a:last-child { border-right:0; }
.entry-grid span { display:inline-block; margin-bottom:14px; color:var(--red); font-weight:850; font-size:13px; }
.entry-grid h3 { color:var(--blue); }
.entry-grid p { font-size:14px; margin:0; }
.feature-split { display:grid; grid-template-columns:minmax(0,1.1fr); gap:42px; align-items:center; }
.feature-split.has-media { grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr); }
.feature-media { min-width:0; display:flex; justify-content:center; }
.home-image { width:min(100%,440px); max-height:270px; }
.home-image img { max-height:250px; }
.story-duo { background:white; max-width:none; padding-inline:max(30px,calc((100% - 1140px)/2)); }
.story-card { display:grid; grid-template-columns:minmax(0,1fr); gap:32px; align-items:center; padding:24px 0; border-top:1px solid var(--line); }
.story-card.has-media { grid-template-columns:minmax(190px,.8fr) minmax(0,1.2fr); }
.story-card.reverse.has-media { grid-template-columns:minmax(0,1.2fr) minmax(190px,.8fr); }
.story-card.reverse.has-media>div:first-child { order:2; }
.story-card p { max-width:620px; }
.story-card a,.culture-main>a { font-weight:750; }
.portrait-image { width:min(100%,250px); max-height:390px; }
.portrait-image img { max-height:370px; }
.culture-feature { display:grid; grid-template-columns:minmax(0,1.3fr) minmax(250px,.7fr); gap:38px; align-items:center; }
.wide-image { width:min(100%,440px); max-height:260px; }
.wide-image img { max-height:240px; }
.culture-index { display:grid; gap:0; border-top:1px solid var(--line); }
.culture-index a { padding:17px 0; border-bottom:1px solid var(--line); text-decoration:none; display:flex; flex-direction:column; gap:3px; }
.culture-index strong { color:var(--blue); }
.culture-index span { color:var(--muted); font-size:14px; }
.creation-band { display:grid; grid-template-columns:minmax(0,1fr); gap:26px 42px; align-items:center; background:#EEF4FC; max-width:none; padding-inline:max(30px,calc((100% - 1140px)/2)); }
.creation-band.has-media { grid-template-columns:minmax(0,1fr) minmax(0,.85fr); }
.mini-process { grid-column:1/-1; display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:10px; list-style:none; margin:0; padding:0; counter-reset:process; }
.mini-process li { counter-increment:process; background:white; border:1px solid var(--line); padding:12px 14px; border-radius:8px; font-size:14px; }
.mini-process li::before { content:counter(process,decimal-leading-zero); display:block; color:var(--red); font-weight:850; margin-bottom:4px; }
.verification-section { padding:0; }
.verification-heading { background:var(--deep-blue); color:white; padding:42px 0 36px; }
.verification-heading h2 { color:white; }
.verification-heading p:last-child { color:#E4EDF8; max-width:720px; margin:0; }
.verification-content { display:grid; grid-template-columns:minmax(0,1fr); gap:36px; align-items:center; padding-top:28px; padding-bottom:32px; background:var(--pale-yellow); }
.verification-content.has-media { grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr); }
.verification-media { min-width:0; }
.verification-copy { min-width:0; color:var(--body); }
.pocket-section { display:grid; grid-template-columns:minmax(0,1fr); gap:36px; align-items:center; }
.pocket-section.has-media { grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr); }
.pocket-media { min-width:0; display:flex; align-items:center; justify-content:center; gap:12px; flex-wrap:wrap; }
.pocket-image { width:min(100%,300px); max-height:330px; }
.pocket-image img { max-height:310px; }
.mark-image { width:min(100%,100px); max-height:90px; }
.mark-image img { max-height:72px; }
.table-wrap { max-width:100%; overflow-x:auto; }
table { border-collapse:collapse; width:100%; }
th,td { border:1px solid var(--line); padding:10px; text-align:left; }
pre,blockquote { max-width:100%; overflow-wrap:anywhere; white-space:pre-wrap; }

@media (max-width:1100px) {
  .wrap { padding-inline:22px; }
  .header-bar { gap:14px; }
  .brand-tagline { display:none; }
  .primary-nav { gap:12px; }
  .primary-nav a,.header-actions a { font-size:13px; }
  .story-duo,.creation-band { padding-inline:22px; }
}
@media (max-width:900px) {
  .header-bar { min-height:68px; grid-template-columns:minmax(0,1fr) auto auto; gap:12px; }
  .primary-nav { display:none; }
  .header-actions { gap:10px; }
  .header-actions .guide-link { min-height:44px; }
  .desktop-toggle-label { display:none; }
  .mobile-toggle-label { display:inline; }
  .menu-toggle { padding-inline:13px; }
  .topic-panel { grid-template-columns:repeat(2,minmax(0,1fr)); padding-top:16px; }
  .topic-group ul { grid-template-columns:1fr; }
  .layout-split { grid-template-columns:minmax(0,1fr); }
  .reading-aside { position:static; }
  .footer-main { grid-template-columns:1fr; }
  .footer-groups { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-notes { grid-template-columns:1fr; }
  .home-hero.has-media,.feature-split.has-media,.culture-feature,.creation-band.has-media,.verification-content.has-media,.pocket-section.has-media { gap:24px; }
  .mini-process { grid-template-columns:repeat(3,minmax(0,1fr)); }
}
@media (max-width:600px) {
  .wrap { padding-inline:16px; }
  body { font-size:16px; }
  .header-bar { min-height:64px; grid-template-columns:minmax(0,1fr) auto auto; gap:8px; }
  .brand-word { font-size:23px; }
  .brand-image { max-width:145px; max-height:32px; }
  .header-actions { gap:6px; }
  .header-actions .guide-link { font-size:13px; padding-inline:2px; }
  .menu-toggle { min-height:44px; padding:7px 10px; font-size:13px; }
  .topic-panel { grid-template-columns:minmax(0,1fr); gap:12px; padding-top:12px; padding-bottom:18px; }
  .topic-group { padding:14px; }
  .topic-group ul { grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px 12px; }
  .page-main { padding-top:18px; padding-bottom:52px; }
  .page-intro { margin-bottom:24px; }
  h1 { font-size:29px; }
  h2 { font-size:22px; }
  .page-lead { font-size:16px; }
  .article-index { gap:7px 11px; }
  .article-index a { font-size:12px; }
  .dossier-grid,.evidence-grid,.path-grid,.index-grid { grid-template-columns:minmax(0,1fr); }
  .dossier-item:first-child { border-top:1px solid var(--line); }
  .scene-entry { padding:16px; }
  .scene-entry:nth-child(even) { margin-left:0; }
  .step-list>li { padding-left:42px; }
  .matrix-card,.service-section,.scenario-panel,.route-panel,.path-panel,.evidence-panel,.index-panel { padding:17px; }
  .related-links { padding:18px; margin-top:34px; }
  .related-links ul { display:grid; gap:7px; }
  .support-image { max-height:210px; }
  .support-image img { max-height:190px; }
  .footer-main { gap:24px; }
  .footer-groups { grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px 14px; }
  .footer-bottom { display:grid; }
  .home-main { padding-bottom:96px; }
  .home-hero,.home-hero.has-media { grid-template-columns:minmax(0,1fr); gap:18px; padding-top:28px; padding-bottom:28px; }
  .hero-copy h1 { font-size:31px; }
  .hero-copy h2 { font-size:26px; }
  .hero-image { max-height:245px; }
  .hero-image img { max-height:225px; }
  .home-section { padding-top:36px; padding-bottom:36px; }
  .entry-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .entry-grid a { padding:17px 14px; border-bottom:1px solid var(--line); }
  .entry-grid a:nth-child(2) { border-right:0; }
  .entry-grid a:nth-child(3),.entry-grid a:nth-child(4) { border-bottom:0; }
  .feature-split,.feature-split.has-media,.culture-feature,.creation-band,.creation-band.has-media,.verification-content,.verification-content.has-media,.pocket-section,.pocket-section.has-media { grid-template-columns:minmax(0,1fr); }
  .story-duo,.creation-band { padding-inline:16px; }
  .story-card,.story-card.has-media,.story-card.reverse.has-media { grid-template-columns:minmax(0,1fr); gap:14px; }
  .story-card.reverse.has-media>div:first-child { order:0; }
  .portrait-image { width:min(100%,210px); max-height:310px; }
  .portrait-image img { max-height:290px; }
  .wide-image { max-height:210px; }
  .wide-image img { max-height:190px; }
  .mini-process { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .verification-heading { padding:32px 0 26px; }
  .pocket-media { justify-content:flex-start; }
  .pocket-image { width:min(100%,210px); max-height:260px; }
  .pocket-image img { max-height:240px; }
  .mark-image { width:min(100%,70px); }
  .mobile-quickbar { position:fixed; z-index:30; left:0; right:0; bottom:0; min-height:calc(58px + env(safe-area-inset-bottom)); padding:0 10px env(safe-area-inset-bottom); display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); align-items:center; background:rgba(255,255,255,.98); border-top:1px solid var(--line); }
  .mobile-quickbar a { min-width:0; min-height:48px; display:flex; align-items:center; justify-content:center; padding:6px 4px; color:var(--deep-blue); text-decoration:none; font-size:13px; font-weight:700; border-radius:7px; }
  .mobile-quickbar a[aria-current="page"] { color:var(--blue); background:var(--pale-blue); outline:1px solid #B7CDE8; }
  .site-footer { padding-bottom:82px; }
}
@media (max-width:360px) {
  .brand-image { max-width:120px; }
  .header-bar { gap:5px; }
  .header-actions { gap:3px; }
  .header-actions .guide-link { font-size:12px; }
  .menu-toggle { padding-inline:8px; }
  .topic-group ul { grid-template-columns:minmax(0,1fr); }
  .breadcrumbs { font-size:12px; }
  .mini-process { grid-template-columns:minmax(0,1fr); }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { animation-duration:.01ms !important; transition-duration:.01ms !important; }
}