:root{
  --blue:#1677EE;--bright:#3395FF;--deep:#075FC6;--navy:#0A315E;--footer:#071D37;
  --title:#16243A;--text:#3C485A;--muted:#6B7787;--soft:#929BA8;--pale:#F7FAFF;
  --light:#EDF5FF;--softblue:#E5F1FF;--line:rgba(22,119,238,.12);
  --shadow:0 12px 34px rgba(30,72,120,.08);--brand-shadow:0 14px 40px rgba(22,119,238,.14);
  --shell:min(1320px,calc(100% - 48px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer}
.shell{width:var(--shell);margin-inline:auto}
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.desktop-nav{height:74px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}
.brand-island{display:flex;align-items:center;gap:10px;min-height:48px;font-weight:800;color:var(--title);white-space:nowrap}
.brand-logo-slot,.mobile-logo-slot,.panel-logo-slot,.footer-logo-slot,.app-icon-slot{display:grid;place-items:center;background:linear-gradient(145deg,#eef6ff,#fff);border:1px solid var(--line);overflow:hidden}
.brand-logo-slot{width:40px;height:40px;border-radius:14px}.brand-logo-slot img{width:34px;height:34px;object-fit:contain}.brand-name{font-size:18px}
.primary-nav{display:flex;align-items:center;justify-content:center;gap:4px;white-space:nowrap;min-width:0}
.primary-nav a,.nav-actions a,.nav-button{min-height:44px;padding:0 11px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;border:0;background:transparent;color:#30445d}
.primary-nav a:hover,.nav-actions a:hover,.nav-button:hover,.primary-nav a:focus-visible,.nav-actions a:focus-visible,.nav-button:focus-visible{background:var(--light);color:var(--deep);outline:none}
.primary-nav a.is-current,.nav-actions a.is-current{background:var(--light);color:var(--deep);font-weight:700}
.primary-nav a.is-current:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);margin-right:7px}
.nav-actions{display:flex;align-items:center;gap:2px;white-space:nowrap}
.mobile-nav{display:none;height:62px;grid-template-columns:60px 1fr 60px;align-items:center}
.mobile-nav button{min-height:44px;border:0;background:transparent;color:#27425f;border-radius:12px}
.mobile-brand{justify-self:center;display:flex;align-items:center;gap:8px;color:var(--title);font-size:15px}
.mobile-logo-slot{width:32px;height:32px;border-radius:10px}.mobile-logo-slot img{width:28px;height:28px;object-fit:contain}
main{min-height:60vh}
.page-hero{padding:72px 0 52px;background:linear-gradient(180deg,var(--pale),#fff)}
.page-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.75fr);gap:56px;align-items:center}
.page-hero-card{min-height:270px;padding:34px;border-radius:32px;background:var(--navy);color:#DCEEFF;box-shadow:var(--brand-shadow);display:flex;flex-direction:column;justify-content:flex-end}
.page-hero-card h2{color:#fff;font-size:26px}.page-hero-card p{color:#DCEEFF}
h1,h2,h3{color:var(--title);line-height:1.28;margin:0 0 12px}
h1{font-size:clamp(36px,4vw,46px);letter-spacing:-.03em}
h2{font-size:clamp(28px,3vw,34px);letter-spacing:-.02em}
h3{font-size:clamp(18px,2vw,24px)}
p{margin:0 0 14px}
.lead{font-size:17px;color:#536277;max-width:820px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--blue);margin-bottom:8px}
.section{padding:72px 0}.section.soft{background:var(--pale)}.section.blue-soft{background:var(--light)}.section.dark{background:var(--navy);color:#DCEEFF}
.section.dark h1,.section.dark h2,.section.dark h3{color:#fff}.section.dark p{color:#DCEEFF}.section.dark .eyebrow{color:#B9DCFF}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:28px}.section-head .copy{max-width:820px}
.inline-links{display:flex;gap:10px;flex-wrap:wrap}.inline-links a{display:inline-flex;min-height:44px;align-items:center;padding:0 15px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--deep)}.inline-links a:hover{background:var(--light)}
.hero-banner{aspect-ratio:16/7;max-height:520px;border-radius:34px;overflow:hidden;background:linear-gradient(135deg,#E8F4FF,#fff 42%,#DBEEFF);border:1px solid var(--line);box-shadow:var(--brand-shadow)}
.hero-banner img{width:100%;height:100%;object-fit:contain}
.home-intro{padding:44px 0 34px}.home-kicker{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:20px}.home-kicker h1{font-size:clamp(42px,5vw,56px)}.home-kicker p{max-width:680px;color:#59687b}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quick-grid a{min-height:112px;padding:22px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}.quick-grid a:hover{transform:translateY(-2px);box-shadow:var(--brand-shadow)}.quick-grid strong{display:block;font-size:19px;color:var(--title);margin-bottom:5px}.quick-grid span{font-size:14px;color:var(--muted)}
.editorial-grid{display:grid;grid-template-columns:1.4fr .9fr .9fr;gap:18px}.editorial-main{grid-row:span 2;min-height:420px;background:var(--navy);color:#DCEEFF;padding:34px;border-radius:28px;display:flex;flex-direction:column;justify-content:flex-end}.editorial-main h3{font-size:30px;color:#fff}.editorial-mid,.editorial-short{border:1px solid var(--line);border-radius:24px;padding:24px;background:#fff}.short-stack{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.city-feature,.app-split{display:grid;grid-template-columns:55fr 45fr;gap:42px;align-items:center}
.city-feature-image,.about-visual{aspect-ratio:4/3;border-radius:30px;overflow:hidden;background:linear-gradient(135deg,#DCEEFF,#F9FCFF);border:1px solid var(--line);box-shadow:var(--shadow)}
.city-feature-image img,.about-visual img{width:100%;height:100%;object-fit:cover}
.time-board{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.time-card{border-top:4px solid var(--blue);background:#fff;border-radius:20px;padding:24px;border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.time-card small{color:var(--blue);font-weight:800}
.route-line{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.route-step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.route-step:before{content:"";display:block;width:10px;height:10px;border-radius:50%;background:var(--blue);margin-bottom:14px}
.interest-cloud{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.interest-cloud a,.interest-chip{display:flex;min-height:88px;align-items:center;justify-content:center;text-align:center;padding:18px;background:#fff;border:1px solid var(--line);border-radius:20px;font-size:16px;font-weight:700;color:#29435f}
.question-list,.plain-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.question-item,.plain-card{padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line)}
.feature-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feature-list article{padding:24px;border:1px solid var(--line);border-radius:22px;background:#fff}
.story-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.story-main{background:var(--light);border-radius:28px;padding:32px}.story-side{display:grid;grid-template-columns:1fr 1fr;gap:14px}.story-side article{border:1px solid var(--line);border-radius:20px;padding:20px}
.topic-grid,.guide-grid,.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.topic-grid article,.guide-grid article,.culture-grid article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px}
.album-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-auto-rows:180px;gap:14px}.media-slot{border-radius:22px;background:linear-gradient(135deg,#DFEFFF,#fff);border:1px solid var(--line);overflow:hidden;position:relative}.media-slot.wide{grid-row:span 2}.media-slot:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(51,149,255,.2),transparent 32%),linear-gradient(150deg,transparent 45%,rgba(22,119,238,.06))}
.pulse-list{display:grid;gap:10px}.pulse-item{display:grid;grid-template-columns:150px 1fr;gap:22px;padding:18px 0;border-bottom:1px solid var(--line)}.pulse-item strong{color:var(--title)}
.app-preview-image{min-height:380px;max-height:520px;display:grid;place-items:center;background:linear-gradient(160deg,var(--light),#fff);border:1px solid var(--line);border-radius:32px;overflow:hidden}.app-preview-image img{width:auto;max-height:520px;object-fit:contain}
.app-icon-row{display:flex;align-items:center;gap:14px;margin-bottom:20px}.app-icon-slot{width:64px;height:64px;border-radius:18px}.app-icon-slot img{width:58px;height:58px;object-fit:contain}
.numbered-list{counter-reset:item;display:grid;gap:14px}.numbered-list article{position:relative;padding:24px 24px 24px 74px;background:#fff;border:1px solid var(--line);border-radius:22px}.numbered-list article:before{counter-increment:item;content:counter(item,decimal-leading-zero);position:absolute;left:22px;top:22px;color:var(--blue);font-weight:900;font-size:20px}
.article-body{max-width:820px;margin-inline:auto}.article-body h2{margin-top:36px}
.article-index{display:grid;grid-template-columns:280px 1fr;gap:44px}.side-index{position:sticky;top:100px;align-self:start;background:var(--pale);border:1px solid var(--line);padding:22px;border-radius:22px}.side-index a{display:block;padding:10px 12px;border-radius:10px;color:#44566b}.side-index a:hover{background:var(--light);color:var(--deep)}
.qa-list{display:grid;gap:14px}.qa-list article{padding:26px;background:#fff;border:1px solid var(--line);border-radius:22px}.qa-list h2{font-size:22px}
.magazine-list{display:grid;gap:18px}.magazine-item{display:grid;grid-template-columns:220px 1fr;gap:28px;padding:26px;border:1px solid var(--line);border-radius:24px;background:#fff}.magazine-label{min-height:140px;border-radius:18px;background:linear-gradient(135deg,var(--light),#fff);display:flex;align-items:flex-end;padding:18px;color:var(--deep);font-weight:800}
.topic-question{font-size:28px;color:var(--title);margin-bottom:10px}
.faq-list{max-width:900px;margin:0 auto}.faq-list details{border:1px solid var(--line);border-radius:18px;background:#fff;margin-bottom:12px;padding:0 20px}.faq-list summary{min-height:58px;display:flex;align-items:center;font-weight:800;color:var(--title);cursor:pointer}.faq-list p{padding:0 0 20px;color:#4B5C70}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.contact-grid article{padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff}
.overlay{position:fixed;inset:0;background:rgba(7,29,55,.48);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.mega-panel,.search-panel{position:fixed;left:0;right:0;top:0;z-index:90;background:#fff;transform:translateY(-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.22s ease;box-shadow:0 24px 80px rgba(7,29,55,.18);max-height:90vh;overflow:auto}
.mega-panel.is-open,.search-panel.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto}
.panel-head,.search-head{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}
.panel-head button,.search-head button{min-width:68px;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:13px;color:#31475f}
.panel-brand{display:flex;align-items:center;gap:12px}.panel-logo-slot{width:42px;height:42px;border-radius:14px}.panel-logo-slot img{width:36px;height:36px;object-fit:contain}.panel-brand div{display:grid}.panel-brand small{font-size:11px;letter-spacing:.16em;color:var(--muted)}
.mega-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:26px;padding-top:30px;padding-bottom:38px}.mega-grid h2{font-size:16px;margin-bottom:10px}.mega-grid a{display:block;min-height:42px;padding:8px 0;color:#536378}.mega-grid a:hover{color:var(--deep)}
.search-inner{padding-bottom:36px}.search-form{max-width:800px;margin:30px auto 18px}.search-form label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}.search-form>div{display:flex;gap:10px}.search-form input{flex:1;min-height:52px;border:1px solid rgba(22,119,238,.22);border-radius:15px;padding:0 16px;outline:none}.search-form input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(22,119,238,.08)}.search-form button{min-width:118px;border:0;border-radius:15px;color:#fff;background:linear-gradient(135deg,#3998FF,#1677EE 55%,#075FC6)}
.search-suggestions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.search-suggestions a{padding:9px 14px;border-radius:999px;background:var(--light);color:#315779;font-size:14px}
.site-footer{background:var(--footer);color:#DCEEFF;border-top:1px solid rgba(220,238,255,.22);padding:58px 0 22px}.footer-inner{display:grid;grid-template-columns:1.1fr 2fr;gap:70px}.footer-brand{max-width:430px}.footer-brand>div{display:flex;align-items:center;gap:12px;margin-bottom:18px}.footer-logo-slot{width:50px;height:50px;border-radius:16px;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12)}.footer-logo-slot img{width:42px;height:42px;object-fit:contain}.footer-brand strong{display:block;color:#fff;font-size:20px}.footer-brand span{display:block;font-size:12px;letter-spacing:.18em}.footer-brand p{color:#DCEEFF}
.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.footer-links h2{font-size:15px;color:#fff}.footer-links a{display:block;padding:6px 0;color:#DCEEFF;font-size:14px}.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:13px;color:#BCD4EC}.footer-bottom div{display:flex;gap:18px}
.mobile-bottom{display:none}.panel-open{overflow:hidden}
@media(max-width:1279px){
  :root{--shell:min(1180px,calc(100% - 36px))}
  .desktop-nav{gap:12px}.primary-nav a,.nav-actions a,.nav-button{padding:0 8px;font-size:13px}.brand-name{font-size:16px}
  .topic-grid,.guide-grid,.culture-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:1023px){
  .desktop-nav{display:none}.mobile-nav{display:grid}
  .page-hero-grid,.city-feature,.app-split,.story-layout,.article-index,.footer-inner{grid-template-columns:1fr}
  .side-index{position:relative;top:auto}.quick-grid,.time-board{grid-template-columns:repeat(2,1fr)}
  .editorial-grid{grid-template-columns:1fr 1fr}.editorial-main{grid-column:1/3;grid-row:auto;min-height:320px}
  .route-line{grid-template-columns:repeat(3,1fr)}.interest-cloud{grid-template-columns:repeat(3,1fr)}
  .mega-grid{grid-template-columns:repeat(3,1fr)}.album-grid{grid-template-columns:1.5fr 1fr}.pulse-item{grid-template-columns:120px 1fr}.magazine-item{grid-template-columns:180px 1fr}
}
@media(max-width:767px){
  :root{--shell:calc(100% - 28px)}
  body{font-size:15px;line-height:1.72;padding-bottom:58px}
  .section{padding:52px 0}.page-hero{padding:48px 0 38px}.page-hero-grid{gap:24px}.page-hero-card{min-height:220px;padding:26px;border-radius:24px}
  h1{font-size:clamp(28px,9vw,34px)}h2{font-size:clamp(24px,7vw,28px)}h3{font-size:clamp(17px,5vw,21px)}
  .home-kicker{display:block}.home-kicker h1{font-size:clamp(30px,10vw,38px)}.hero-banner{aspect-ratio:16/10;border-radius:24px}
  .quick-grid,.question-list,.plain-grid,.contact-grid,.feature-list,.topic-grid,.guide-grid,.culture-grid,.story-side{grid-template-columns:1fr}
  .editorial-grid{grid-template-columns:1fr}.editorial-main{grid-column:auto;min-height:280px}.short-stack{grid-template-columns:1fr}
  .time-board{grid-template-columns:1fr 1fr}.route-line{grid-template-columns:1fr 1fr}.interest-cloud{grid-template-columns:1fr 1fr}
  .city-feature{gap:24px}.app-split{gap:24px}.app-preview-image{min-height:320px}.app-preview-image img{max-width:320px}
  .album-grid{grid-template-columns:1fr 1fr;grid-auto-rows:150px}.album-grid .wide{grid-column:1/3}
  .pulse-item{grid-template-columns:1fr;gap:4px}.magazine-item{grid-template-columns:1fr}.magazine-label{min-height:96px}
  .mega-panel,.search-panel{height:100vh;max-height:none}.mega-grid{grid-template-columns:1fr 1fr;padding-bottom:90px}.panel-head{position:sticky;top:0;background:#fff;z-index:2}
  .search-form>div{flex-direction:column}.search-form button{min-height:50px}
  .footer-links{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}
  .mobile-bottom{position:fixed;z-index:55;left:0;right:0;bottom:0;height:calc(58px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.98);border-top:1px solid var(--line);box-shadow:0 -8px 30px rgba(30,72,120,.08)}
  .mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:54px;font-size:13px;color:#40536a}
  .section-head{display:block}.section-head .inline-links{margin-top:14px}
}
@media(max-width:559px){
  :root{--shell:calc(100% - 24px)}.quick-grid,.time-board,.route-line{grid-template-columns:1fr}.interest-cloud{grid-template-columns:1fr 1fr}.mega-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr;gap:22px}.album-grid{grid-template-columns:1fr;grid-auto-rows:180px}.album-grid .wide{grid-column:auto;grid-row:span 1}.footer-bottom div{flex-wrap:wrap}.app-preview-image{min-height:280px}.section{padding:46px 0}
}

.contact-card{display:block;padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff;color:inherit;box-shadow:var(--shadow);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.contact-card:hover{transform:translateY(-2px);border-color:rgba(22,119,238,.28);box-shadow:var(--brand-shadow)}
.contact-card h2{margin:8px 0 10px}.contact-card p{color:var(--text);margin-bottom:14px}
.notice{max-width:900px;margin:0 auto;padding:28px;border:1px solid var(--line);border-radius:24px;background:var(--light)}
.notice strong{display:block;font-size:20px;color:var(--title);margin-bottom:8px}.notice p{margin-bottom:12px}