:root{--bg:#fff;--sub:#f7faff;--pale:#edf5ff;--gray:#f5f6f8;--title:#172033;--text:#3e4859;--muted:#6f7a89;--assist:#98a1af;--blue:#1478f2;--blue2:#2f8cff;--deep:#075dc9;--dark:#084a9c;--line:rgba(20,120,242,.12);--grayline:rgba(30,50,70,.08);--shadow:0 14px 38px rgba(21,67,118,.08);--bshadow:0 16px 42px rgba(20,120,242,.15);--footer:#0b1f38;--radius:16px;--max:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.shell{width:min(calc(100% - 32px),var(--max));margin-inline:auto}.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--grayline)}.desktop-nav{height:74px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;min-width:230px}.brand img{max-width:132px;max-height:42px;object-fit:contain}.brand-text{font-size:22px;font-weight:800;color:var(--blue);letter-spacing:.02em}.brand-tag{font-size:12px;color:var(--blue);background:var(--pale);border-radius:999px;padding:4px 8px;white-space:nowrap}.main-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1;min-width:0}.main-nav a,.icon-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 12px;white-space:nowrap}.main-nav a{font-size:15px;color:var(--muted)}.main-nav a:hover,.main-nav a.is-active{color:var(--blue);background:var(--pale)}.nav-actions{display:flex;align-items:center;gap:6px}.icon-btn{border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer}.icon-btn:hover,.icon-btn.is-active{color:var(--blue);border-color:rgba(20,120,242,.28);background:var(--pale)}.mobile-nav{display:none;height:64px;align-items:center;justify-content:space-between;padding:0 15px}.mobile-action{min-width:48px;min-height:44px;display:flex;align-items:center;justify-content:center;border:0;background:transparent;color:var(--blue);font-weight:700}.mobile-brand{min-width:0;display:flex;justify-content:center;align-items:center}.mobile-brand img{max-width:128px;max-height:38px;object-fit:contain}.mobile-brand span{font-weight:800;color:var(--blue);font-size:20px}main{min-height:50vh}.page-hero{padding:70px 0 34px}.eyebrow{display:inline-block;color:var(--blue);background:var(--pale);border-radius:999px;padding:6px 10px;font-size:13px;font-weight:700}.page-hero h1{margin:14px 0 12px;color:var(--title);font-size:clamp(34px,5vw,58px);line-height:1.12;letter-spacing:-.03em}.page-hero 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1fr;gap:18px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:16px}.route-step{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--pale);color:var(--blue);font-weight:900}.interest-grid{grid-template-columns:repeat(4,1fr)}.interest-item{padding:20px;border-radius:18px;border:1px solid var(--line);background:#fff}.interest-item:nth-child(3n){background:var(--pale)}.qa-grid{grid-template-columns:1fr 1fr}.qa-item{padding:22px;border-bottom:1px solid var(--grayline)}.qa-item h3{margin:0 0 8px;color:var(--title)}.story-grid{grid-template-columns:1.5fr 1fr 1fr}.story-main{grid-row:span 2;padding:28px;border-radius:18px;background:var(--pale)}.story-item{padding:20px;border:1px solid var(--line);border-radius:16px}.discover-grid{grid-template-columns:repeat(4,1fr);align-items:start}.discover-item{padding:22px;border:1px solid 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var(--grayline)}.faq-grid summary{cursor:pointer;color:var(--title);font-weight:800}.faq-grid p{color:var(--muted)}.brand-statement{padding:42px;border-radius:24px;background:var(--blue);color:#fff}.brand-statement h2{margin:0 0 14px;font-size:34px}.brand-statement p{margin:0;color:#edf6ff}.site-footer{background:var(--footer);color:#eaf3ff;padding:54px 0 calc(90px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.2fr 2fr;gap:44px}.footer-logo{display:inline-flex;align-items:center}.footer-logo img{max-width:150px;max-height:48px;object-fit:contain;filter:brightness(0) invert(1)}.footer-brand strong{font-size:24px}.footer-brand p{color:#b9c8db}.footer-en{letter-spacing:.1em;font-size:12px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-links h2{font-size:15px;margin:0 0 12px;color:#fff}.footer-links a{display:block;padding:5px 0;color:#b9c8db}.footer-links a:hover{color:#fff}.footer-note{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:#b9c8db}.copyright{margin-top:14px;color:#8497ad;font-size:13px}.overlay{position:fixed;inset:0;z-index:80;background:rgba(9,28,49,.36);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.mega-menu,.search-panel{position:fixed;left:0;right:0;top:74px;z-index:90;background:#fff;box-shadow:0 24px 60px rgba(14,42,73,.18);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);transition:.2s}.mega-menu.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.mega-menu{max-height:calc(100vh - 74px);overflow:auto;padding-bottom:26px}.menu-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px}.menu-head button,.search-head button{min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;cursor:pointer}.menu-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.menu-grid h2{font-size:15px;color:var(--blue)}.menu-grid a{display:block;padding:10px 0;border-bottom:1px solid var(--grayline)}.menu-grid strong{display:block;color:var(--title)}.menu-grid span{display:block;margin-top:4px;font-size:12px;color:var(--muted)}.search-panel{padding-bottom:28px}.search-box{max-width:900px}.search-input-wrap input{width:100%;height:54px;border:1px solid var(--line);border-radius:14px;padding:0 16px;outline:none}.search-input-wrap input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,120,242,.1)}.search-groups{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:16px}.search-groups>div{padding:16px;border-radius:14px;background:var(--sub)}.search-groups h2{margin:0 0 6px;font-size:15px;color:var(--title)}.search-groups p{margin:0;color:var(--muted);font-size:13px}.search-results{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.search-results a{padding:9px 12px;border-radius:999px;background:var(--pale);color:var(--blue)}.ui-locked{overflow:hidden}.mobile-bottom{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(20,120,242,.28);outline-offset:2px}
@media(max-width:1050px){.desktop-nav{gap:12px}.brand{min-width:180px}.brand-tag{display:none}.main-nav a,.icon-btn{padding-inline:9px}.overview-grid,.interest-grid,.discover-grid{grid-template-columns:repeat(2,1fr)}.editor-grid{grid-template-columns:1fr 1.2fr}.editor-grid>.editor-panel:last-child{grid-column:1/-1}.discussion-grid{grid-template-columns:1fr 1fr}.discussion-main{grid-row:auto;grid-column:1/-1}.map-grid,.guide-grid,.principle-grid{grid-template-columns:repeat(2,1fr)}.story-grid{grid-template-columns:1fr 1fr}.story-main{grid-row:auto;grid-column:1/-1}.footer-grid{grid-template-columns:1fr}.content-layout{grid-template-columns:1fr}.side-index{position:static;display:grid;grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.desktop-nav{display:none}.mobile-nav{display:flex}.mega-menu,.search-panel{top:64px}.mega-menu{left:auto;width:min(88vw,420px);height:calc(100vh - 64px);max-height:none;transform:translateX(100%);padding-bottom:90px}.mega-menu.is-open{transform:none}.menu-head{width:100%;padding-inline:18px}.menu-grid{width:100%;grid-template-columns:1fr;padding-inline:18px}.search-panel{inset:64px 0 0 0;height:calc(100vh - 64px);overflow:auto;transform:none}.search-panel.is-open{transform:none}.search-box{width:100%;padding-inline:15px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(5,1fr);min-height:58px;padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.97);border-top:1px solid var(--grayline);box-shadow:0 -10px 30px rgba(20,60,100,.08)}.mobile-bottom a{min-height:58px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-active{color:var(--blue);font-weight:800}.site-footer{padding-bottom:calc(110px + env(safe-area-inset-bottom))}.page-hero{padding:44px 0 26px}.editor-grid{grid-template-columns:1fr}.editor-grid>.editor-panel:last-child{grid-column:auto}.editor-panel h1{font-size:32px}.brand-visual{min-height:220px}.overview-grid,.map-grid,.life-grid,.interest-grid,.qa-grid,.discover-grid,.guide-grid,.principle-grid,.faq-grid,.safety-grid{grid-template-columns:1fr}.life-card:nth-child(2n),.discover-item:nth-child(4n+2),.safety-box:nth-child(2){transform:none;margin-top:0}.discussion-grid{grid-template-columns:1fr}.discussion-main{grid-column:auto}.route-item{grid-template-columns:54px 1fr}.story-grid{grid-template-columns:1fr}.story-main{grid-column:auto}.app-band{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.section{padding:48px 0}.section-head{align-items:flex-start;flex-direction:column}.content-card{padding:22px}.side-index{grid-template-columns:1fr 1fr}.search-groups{grid-template-columns:1fr}.channel-strip .shell{gap:20px}}
@media(max-width:520px){.shell{width:min(calc(100% - 30px),var(--max))}.footer-links,.side-index{grid-template-columns:1fr}.page-hero h1{font-size:38px}.page-hero p{font-size:16px}.content-card h2{font-size:22px}.route-item{grid-template-columns:1fr}.route-step{width:44px;height:44px}.brand-statement{padding:28px}.brand-statement h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
/* 栏目视觉差异 */
.page-plaza .content-stack{grid-template-columns:1.15fr .85fr}.page-plaza .content-card:first-child{grid-row:span 2;background:var(--pale);padding:34px}.page-plaza .content-card:nth-child(4n){border-left:4px solid var(--blue)}
.page-city .content-stack{gap:0;border-top:1px solid var(--line)}.page-city .content-card{display:grid;grid-template-columns:180px 1fr;gap:24px;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;padding:28px 6px;background:#fff}.page-city .content-card h2{font-size:20px}.page-city .content-card:nth-child(2n){background:linear-gradient(90deg,var(--sub),#fff)}
.page-life .content-stack{grid-template-columns:1.15fr .85fr;align-items:start}.page-life .content-card{min-height:220px}.page-life .content-card:nth-child(3n+1){grid-row:span 2;min-height:360px;background:var(--pale)}.page-life .content-card:nth-child(2n){margin-top:22px}
.page-travel .content-stack{counter-reset:route}.page-travel .content-card{position:relative;padding-left:86px}.page-travel .content-card:before{counter-increment:route;content:counter(route,decimal-leading-zero);position:absolute;left:22px;top:24px;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--pale);color:var(--blue);font-weight:900}
.page-interest .content-stack{grid-template-columns:repeat(2,1fr)}.page-interest .content-card{box-shadow:none}.page-interest .content-card:nth-child(4n+1){grid-column:span 2;background:var(--pale)}.page-interest .content-card h2:before{content:"#";color:var(--blue);margin-right:5px}
.page-questions .content-stack{gap:0}.page-questions .content-card{border-radius:0;border-width:0 0 1px 0;box-shadow:none;padding:26px 8px}.page-questions .content-card h2{font-size:21px}.page-questions .content-card h2:before{content:"问 ";color:var(--blue);font-size:13px}.page-questions .content-card p:before{content:"答 ";color:var(--deep);font-weight:800}
.page-stories .content-stack{grid-template-columns:1fr 1fr}.page-stories .content-card:first-child{grid-column:1/-1;padding:38px;background:var(--pale)}.page-stories .content-card:first-child h2{font-size:30px}.page-stories .content-card{min-height:240px}
.page-discover .content-stack{grid-template-columns:repeat(3,1fr);align-items:start}.page-discover .content-card:nth-child(3n+2){margin-top:34px}.page-discover .content-card:nth-child(4n){grid-column:span 2;background:var(--pale)}
.page-topics .content-stack{gap:26px}.page-topics .content-card{padding:34px;border-left:5px solid var(--blue);box-shadow:none}.page-topics .content-card:nth-child(odd) h2{font-size:29px}.page-topics .content-card:nth-child(even){margin-left:70px;background:var(--sub)}
.page-guides .content-stack{grid-template-columns:repeat(2,1fr)}.page-guides .content-card{box-shadow:none;border-top:4px solid var(--blue)}.page-guides .content-card:nth-child(3n){grid-column:1/-1;background:var(--pale)}
.page-community .content-stack{grid-template-columns:repeat(2,1fr)}.page-community .content-card{position:relative;padding-top:56px}.page-community .content-card:before{content:"共同原则";position:absolute;left:24px;top:20px;font-size:12px;color:var(--blue);background:var(--pale);padding:3px 8px;border-radius:999px}
.page-notices .content-stack{gap:0;border-top:1px solid var(--grayline)}.page-notices .content-card{display:grid;grid-template-columns:140px 1fr;gap:24px;border:0;border-bottom:1px solid var(--grayline);border-radius:0;box-shadow:none}.page-notices .content-card h2{font-size:18px;color:var(--blue)}
.page-app .content-stack{grid-template-columns:1.25fr .75fr}.page-app .content-card:first-child{grid-row:span 3;background:var(--pale);min-height:420px}.page-app .content-card:nth-child(2n){border-radius:24px 24px 8px 24px}
.page-download .content-stack{counter-reset:install}.page-download .content-card{box-shadow:none;border-left:4px solid var(--line)}.page-download .content-card h2:before{counter-increment:install;content:counter(install) ". ";color:var(--blue)}
.page-safety .content-stack{grid-template-columns:1fr 1fr}.page-safety .content-card{border-color:rgba(20,120,242,.2)}.page-safety .content-card:nth-child(odd){background:var(--pale)}.page-safety .content-card h2:before{content:"安全 · ";font-size:12px;color:var(--blue);vertical-align:middle}
.page-privacy .content-stack{grid-template-columns:repeat(2,1fr)}.page-privacy .content-card{box-shadow:none}.page-privacy .content-card:nth-child(4n+1),.page-privacy .content-card:nth-child(4n+4){background:var(--pale)}
.page-rules .content-stack{counter-reset:rule;gap:12px}.page-rules .content-card{position:relative;padding-left:78px;box-shadow:none}.page-rules .content-card:before{counter-increment:rule;content:counter(rule);position:absolute;left:24px;top:24px;font-size:28px;font-weight:900;color:rgba(20,120,242,.2)}
.page-help .content-stack{grid-template-columns:repeat(2,1fr)}.page-help .content-card{box-shadow:none}.page-help .content-card h2{padding-bottom:10px;border-bottom:1px solid var(--line)}
.page-feedback .content-stack{grid-template-columns:repeat(2,1fr)}.page-feedback .content-card:nth-last-child(-n+2){grid-column:1/-1}.page-feedback .content-card{box-shadow:none}
.page-contact .content-stack{gap:0}.page-contact .content-card{display:grid;grid-template-columns:170px 1fr;gap:24px;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none}.page-contact .content-card h2{font-size:19px}
.page-about .content-stack{grid-template-columns:1fr 1fr}.page-about .content-card:first-child,.page-about .content-card:last-child{grid-column:1/-1;background:var(--pale);padding:36px}.page-about .content-card:first-child h2,.page-about .content-card:last-child h2{font-size:30px}
@media(max-width:820px){.page-plaza .content-stack,.page-life .content-stack,.page-interest .content-stack,.page-stories .content-stack,.page-discover .content-stack,.page-guides .content-stack,.page-community .content-stack,.page-app .content-stack,.page-safety .content-stack,.page-privacy .content-stack,.page-help .content-stack,.page-feedback .content-stack,.page-about .content-stack{grid-template-columns:1fr}.page-plaza .content-card:first-child,.page-life .content-card:nth-child(3n+1),.page-interest .content-card:nth-child(4n+1),.page-stories .content-card:first-child,.page-discover .content-card:nth-child(4n),.page-guides .content-card:nth-child(3n),.page-feedback .content-card:nth-last-child(-n+2),.page-about .content-card:first-child,.page-about .content-card:last-child{grid-column:auto;grid-row:auto;min-height:0}.page-life .content-card:nth-child(2n),.page-discover .content-card:nth-child(3n+2),.page-topics .content-card:nth-child(even){margin:0}.page-city .content-card,.page-notices .content-card,.page-contact .content-card{grid-template-columns:1fr;gap:8px}.page-travel .content-card{padding-left:72px}.page-app .content-card:first-child{grid-row:auto;min-height:0}}
.menu-head-actions{display:flex;gap:8px}.page-intro-note{margin:-12px auto 30px;padding:18px 20px;border-radius:14px;background:var(--sub);border:1px solid var(--line);color:var(--muted)}