:root{--bg:#fff;--sub:#F7FAFE;--pale:#EDF5FF;--soft:#E3F0FF;--gray:#F4F6F9;--title:#17243A;--text:#3C495D;--muted:#6E7988;--hint:#99A2AF;--blue:#1478F2;--bright:#348FFF;--deep:#0765D4;--navy:#094D9E;--line:rgba(20,120,242,.12);--neutral:rgba(20,40,70,.08);--shadow:0 14px 38px rgba(35,72,118,.08);--brand-shadow:0 16px 44px rgba(20,120,242,.14);--footer:#091E39;--header-h:72px;--shell:1320px}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}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}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(calc(100% - 40px),var(--shell));margin:0 auto}.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);border-bottom:1px solid var(--neutral);backdrop-filter:blur(12px)}.desktop-nav{height:var(--header-h);display:flex;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}.brand img{display:block;max-height:42px;width:auto;object-fit:contain}.brand-mark{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;padding:7px 12px;border-radius:8px;font-weight:800}.brand-en{font-size:10px;letter-spacing:.12em;color:var(--muted);font-weight:700;white-space:nowrap}.main-nav{display:flex;align-items:stretch;gap:4px;min-width:0;flex:1;height:100%;white-space:nowrap}.main-nav a,.utility-link{position:relative;display:flex;align-items:center;min-height:44px;padding:0 11px;border-radius:10px;font-size:14px;white-space:nowrap}.main-nav a:hover,.utility-link:hover{background:var(--pale);color:var(--blue)}.main-nav a.is-current,.utility-link.is-current{color:var(--blue);font-weight:700}.main-nav a.is-current:after,.utility-link.is-current:after{content:"";position:absolute;bottom:9px;left:50%;width:5px;height:5px;border-radius:50%;background:var(--blue);transform:translateX(-50%)}.nav-actions{display:flex;align-items:center;gap:5px}.icon-button,.grid-button,.panel-close{border:0;background:transparent;color:var(--title);min-width:44px;min-height:44px;border-radius:12px}.icon-button:hover,.grid-button:hover,.panel-close:hover{background:var(--pale);color:var(--blue)}.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:4px}.btn-text{font-size:13px}.grid-icon{width:20px;height:20px;display:grid;grid-template-columns:repeat(3,4px);gap:4px;align-content:center;justify-content:center}.grid-icon 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0;background:rgba(9,30,57,.36);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}.explore-panel,.search-panel{position:fixed;left:0;right:0;top:var(--header-h);z-index:100;background:#fff;box-shadow:var(--brand-shadow);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-14px);transition:.22s;max-height:85vh;overflow:auto}.explore-panel.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.panel-head{min-height:74px;display:flex;align-items:center;gap:20px;border-bottom:1px solid var(--neutral)}.panel-head strong{font-size:20px;color:var(--title);margin-left:auto}.explore-groups{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;padding:28px 0 34px}.explore-groups h2{font-size:14px;color:var(--blue);margin:0 0 12px}.explore-groups a{display:block;padding:10px;border-radius:12px}.explore-groups a:hover{background:var(--pale)}.explore-groups b{display:block;color:var(--title);font-size:14px}.explore-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}.search-inner{padding:30px 0 38px}.search-title-row{display:flex;align-items:center;justify-content:space-between}.search-title-row h2{margin:0 0 14px;color:var(--title)}.eyebrow{display:block;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.18em}.search-inner label{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.search-inner input{width:100%;height:58px;border:1px solid var(--line);border-radius:16px;padding:0 18px;outline:none;background:var(--sub);color:var(--title);font-size:17px}.search-inner input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(20,120,242,.08)}.search-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}.search-columns h3{font-size:14px;color:var(--title)}.chip-list{display:flex;flex-wrap:wrap;gap:8px}.chip-list button{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:999px;padding:8px 11px}.chip-list button:hover{color:var(--blue);background:var(--pale)}.search-links{display:grid;gap:8px}.search-links a{padding:8px 10px;border-radius:10px}.search-links a:hover{background:var(--pale);color:var(--blue)}.search-links a[hidden]{display:none}.search-empty{color:var(--muted)}
.section{padding:72px 0}.section.soft{background:var(--sub)}.section.pale{background:var(--pale)}.section.deep{background:var(--footer);color:#E9F3FF}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}.section-head h2{margin:4px 0 0;font-size:clamp(28px,3vw,44px);line-height:1.16;color:var(--title)}.section.deep .section-head h2{color:#fff}.section-head p{max-width:660px;margin:0;color:var(--muted)}.section.deep .section-head p{color:#BFD4EC}.page-intro{padding:58px 0 42px;background:linear-gradient(180deg,#F7FAFE,#fff);border-bottom:1px solid var(--neutral)}.page-intro h1{max-width:980px;margin:8px 0 0;color:var(--title);font-size:clamp(38px,6vw,70px);line-height:1.05;letter-spacing:-.03em}.page-intro p{max-width:800px;font-size:18px;color:var(--muted);margin:20px 0 0}.content-index{border-bottom:1px solid var(--neutral);background:#fff}.content-index .shell{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}.content-index a{position:relative;white-space:nowrap;padding:14px 15px;font-size:14px}.content-index a:hover{color:var(--blue);background:var(--sub)}.content-index a.is-current{color:var(--blue);font-weight:700}.content-index a.is-current:before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--blue);margin-right:7px}.hero-desk{padding:34px 0 46px;background:linear-gradient(135deg,#F7FAFE,#EDF5FF 46%,#fff)}.hero-grid{display:grid;grid-template-columns:28fr 47fr 25fr;gap:20px}.hero-note,.hero-cover,.hero-discover{background:#fff;border:1px solid var(--neutral);box-shadow:var(--shadow);border-radius:18px;min-width:0}.hero-note{padding:30px}.hero-note h1{font-size:clamp(34px,4vw,58px);line-height:1.06;margin:14px 0;color:var(--title);letter-spacing:-.035em}.hero-note p{color:var(--muted)}.button-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px}.primary-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;color:#fff;background:linear-gradient(135deg,#43A0FF 0%,#1478F2 56%,#0964CE 100%);box-shadow:var(--brand-shadow);font-weight:700}.primary-button:hover{filter:brightness(.97);transform:translateY(-1px)}.text-link{color:var(--blue);font-weight:700;display:inline-flex;align-items:center;min-height:44px}.text-link:hover{text-decoration:underline}.hero-indexes{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.hero-indexes a{padding:12px;background:var(--sub);border-radius:12px}.hero-indexes b{display:block;color:var(--title);font-size:13px}.hero-indexes span{font-size:12px;color:var(--muted)}.hero-cover{min-height:520px;overflow:hidden;display:flex}.hero-cover img{width:100%;height:100%;object-fit:contain;background:var(--soft)}.cover-fallback{width:100%;padding:36px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(160deg,#1478F2,#0C5FC3 64%,#094D9E);color:#fff;position:relative;overflow:hidden}.cover-fallback:before,.cover-fallback:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.22);border-radius:50%}.cover-fallback:before{width:340px;height:340px;right:-120px;top:-60px}.cover-fallback:after{width:520px;height:520px;right:-180px;bottom:-320px}.cover-fallback strong{font-size:clamp(42px,5vw,76px);line-height:1;z-index:1}.cover-fallback span{max-width:420px;color:#D8EBFF;z-index:1}.hero-discover{padding:24px}.hero-discover h2{font-size:17px;margin:0 0 12px;color:var(--title)}.discover-item{padding:16px 0;border-top:1px solid var(--neutral)}.discover-item:first-of-type{border-top:0}.discover-item b{display:block;color:var(--title)}.discover-item p{font-size:13px;color:var(--muted);margin:6px 0}.editorial-list{border-top:1px solid var(--neutral)}.editorial-item{display:grid;grid-template-columns:110px 1.2fr 1.8fr auto;gap:24px;padding:28px 0;border-bottom:1px solid var(--neutral)}.editorial-num{font-size:38px;line-height:1;color:var(--blue);font-weight:800}.editorial-item h3{font-size:25px;line-height:1.2;color:var(--title);margin:0}.editorial-item p{margin:0;color:var(--muted)}
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.time{font-size:13px;color:var(--blue);font-weight:800;letter-spacing:.1em}.plan-col h3{color:var(--title);font-size:24px;margin:5px 0 16px}.plan-piece{border-top:1px solid var(--neutral);padding:14px 0}.plan-piece b{display:block;color:var(--title)}.plan-piece p{font-size:13px;color:var(--muted);margin:6px 0}.article-mosaic{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.article-card{padding:26px;border-radius:18px;border:1px solid var(--neutral);background:#fff}.article-card:nth-child(3n){grid-column:1/-1}.article-card h3{color:var(--title);font-size:25px;margin:0 0 10px}.article-card p{color:var(--muted);margin:0}.timeline{position:relative;padding-left:40px}.timeline:before{content:"";position:absolute;left:14px;top:12px;bottom:12px;width:2px;background:var(--line)}.timeline-item{position:relative;padding:0 0 34px 34px}.timeline-node{position:absolute;left:-40px;top:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-size:11px;font-weight:800;box-shadow:0 0 0 8px var(--pale)}.timeline-item h3{color:var(--title);font-size:24px;margin:0 0 8px}.timeline-item p{color:var(--muted);margin:0}.tag-wall{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.tag-wall a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;border:1px solid var(--line);background:#fff;color:var(--title);border-radius:999px;padding:8px 18px;font-weight:700}.tag-wall a:nth-child(3n+1){font-size:22px;padding:12px 24px;background:var(--pale)}.tag-wall a:hover{background:var(--blue);color:#fff}.qa-list{display:grid;gap:16px}.qa-item{padding:26px;border:1px solid var(--neutral);border-radius:18px;background:#fff}.qa-item .q{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em}.qa-item h3{color:var(--title);font-size:24px;margin:4px 0 10px}.qa-item p{color:var(--muted);margin:0}.story-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}.main-story,.short-story{border-radius:18px;border:1px solid var(--neutral);background:#fff;padding:28px}.main-story{grid-row:span 2}.main-story h2{font-size:36px;line-height:1.18;color:var(--title);margin:8px 0 16px}.short-story h3{font-size:20px;color:var(--title);margin:0 0 8px}.story-grid p{color:var(--muted)}.directory-wall{columns:3 280px;column-gap:18px}.directory-card{break-inside:avoid;margin:0 0 18px;padding:24px;border-radius:18px;border:1px solid var(--neutral);background:#fff}.directory-card:nth-child(2n){background:var(--sub)}.directory-card h3{color:var(--title);font-size:22px;margin:0 0 8px}.directory-card p{color:var(--muted);margin:0}.feature-list{display:grid;gap:18px}.feature{display:grid;grid-template-columns:180px 1fr;gap:26px;padding:30px 0;border-top:1px solid var(--neutral)}.feature:first-child{border-top:0}.feature-code{font-size:20px;color:var(--blue);font-weight:900;letter-spacing:.12em}.feature h2{font-size:34px;color:var(--title);margin:0 0 12px}.feature p{color:var(--muted)}.feature ul{columns:2;padding-left:18px}.manual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.manual-card{padding:26px;border:1px solid var(--neutral);border-radius:18px;background:#fff}.manual-card h3{font-size:23px;color:var(--title);margin:0 0 8px}.manual-card p{color:var(--muted)}.folder-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.folder{padding:24px;border-radius:10px 10px 18px 18px;border:1px solid var(--line);background:linear-gradient(180deg,#EDF5FF,#fff);position:relative}.folder:before{content:"";position:absolute;top:-9px;left:18px;width:90px;height:10px;border:1px solid var(--line);border-bottom:0;border-radius:8px 8px 0 0;background:#EDF5FF}.folder h3{color:var(--title);font-size:20px}.folder p{color:var(--muted);font-size:14px}.board{border:1px solid var(--neutral);border-radius:16px;overflow:hidden;background:#fff}.notice{display:grid;grid-template-columns:130px 1fr auto;gap:20px;padding:20px 22px;border-top:1px solid var(--neutral)}.notice:first-child{border-top:0}.notice-status{color:var(--blue);font-weight:800;font-size:13px}.notice h3{margin:0;color:var(--title)}.notice p{margin:6px 0 0;color:var(--muted)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.principle{padding:24px;border:1px solid var(--neutral);border-radius:18px;background:#fff}.principle .num{color:var(--blue);font-weight:900}.principle h3{color:var(--title);font-size:21px}.principle p{color:var(--muted)}
.app-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.app-copy h2{font-size:44px;line-height:1.12;color:var(--title)}.app-copy p{color:var(--muted)}.app-visual{min-height:430px;border-radius:28px;background:linear-gradient(160deg,#EDF5FF,#DCEBFF);display:grid;place-items:center;padding:24px;border:1px solid var(--line)}.app-visual img{max-width:100%;max-height:500px;object-fit:contain}.phone-fallback{width:min(280px,80%);aspect-ratio:10/18;border:8px solid #17243A;border-radius:36px;background:#fff;padding:26px 18px;box-shadow:var(--brand-shadow);display:flex;flex-direction:column;gap:12px}.phone-fallback:before{content:"海角社区";font-weight:900;color:var(--blue);font-size:22px}.phone-fallback i{display:block;height:44px;border-radius:12px;background:var(--pale)}.risk-grid,.privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.risk-item{padding:22px;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06)}.risk-item h3{color:#fff;margin:0 0 8px}.risk-item p{color:#C7D9EC;margin:0}.privacy-item{padding:22px;border-radius:16px;background:#fff;border:1px solid var(--line)}.privacy-item h3{color:var(--title);margin:0 0 8px}.privacy-item p{color:var(--muted);margin:0}.brand-statement{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.brand-statement h2{font-size:clamp(38px,5vw,72px);line-height:1.02;color:var(--title);margin:0}.brand-statement p{font-size:18px;color:var(--muted)}.prose{max-width:920px}.prose h2{font-size:30px;line-height:1.2;color:var(--title);margin:44px 0 12px}.prose h3{font-size:22px;color:var(--title);margin:26px 0 8px}.prose p{margin:0 0 16px}.split-prose{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px}.side-index{position:sticky;top:100px;align-self:start;padding:20px;border:1px solid var(--neutral);border-radius:16px;background:var(--sub)}.side-index h2{font-size:16px;color:var(--title);margin:0 0 12px}.side-index a{display:block;padding:8px 6px;color:var(--muted);border-radius:8px}.side-index a:hover{background:#fff;color:var(--blue)}.faq-list{display:grid;gap:12px}.faq-list details{border:1px solid var(--neutral);border-radius:14px;background:#fff;padding:4px 18px}.faq-list summary{cursor:pointer;list-style:none;min-height:58px;display:flex;align-items:center;color:var(--title);font-weight:700}.faq-list summary::-webkit-details-marker{display:none}.faq-list details p{margin:0;padding:0 0 18px;color:var(--muted)}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-card{padding:24px;border:1px solid var(--neutral);border-radius:16px;background:#fff}.contact-card h3{color:var(--title);margin:0 0 8px}.contact-card p{color:var(--muted);margin:0}.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;display:grid;grid-template-columns:48px 1fr;gap:16px;padding:18px;border:1px solid var(--neutral);border-radius:14px;background:#fff}.step:before{content:counter(step,decimal-leading-zero);width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--blue);color:#fff;font-weight:900}.step h3{margin:0;color:var(--title)}.step p{margin:4px 0 0;color:var(--muted)}.note-box{padding:20px 22px;border-left:4px solid var(--blue);background:var(--pale);border-radius:0 14px 14px 0}.image-frame{border-radius:18px;overflow:hidden;background:var(--pale);border:1px solid var(--line);padding:18px}.image-frame img{display:block;max-width:100%;height:auto;margin:auto}.site-footer{background:var(--footer);color:#E9F3FF;padding:58px 0 108px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:30px}.footer-brand p{max-width:440px;color:#BFD4EC}.footer-logo .brand-en{color:#BFD4EC}.footer-grid nav h2{font-size:14px;color:#fff;margin:0 0 10px}.footer-grid nav a{display:block;color:#BFD4EC;padding:5px 0;font-size:14px}.footer-grid nav a:hover{color:#fff}.footer-note{margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:24px;color:#94ABC5;font-size:13px}.footer-note p:first-child{max-width:760px}.mobile-bottom{display:none}:focus-visible{outline:3px solid rgba(20,120,242,.35);outline-offset:3px}
@media(max-width:1180px){.brand-en{display:none}.main-nav a,.utility-link{padding:0 9px;font-size:13px}.btn-text{display:none}.hero-grid{grid-template-columns:1fr 1.35fr}.hero-discover{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.hero-discover h2{grid-column:1/-1}.folder-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:2fr repeat(2,1fr)}.footer-brand{grid-row:span 2}}
@media(max-width:900px){:root{--header-h:62px}.shell{width:min(calc(100% - 30px),var(--shell))}.desktop-nav{display:none}.mobile-nav{display:flex}.explore-panel,.search-panel{top:0;bottom:0;max-height:none}.overlay-backdrop{inset:0}.panel-head{position:sticky;top:0;background:#fff;z-index:2}.explore-groups{grid-template-columns:1fr 1fr;padding-bottom:110px}.search-inner{padding-bottom:110px}.search-columns{grid-template-columns:1fr 1fr}.hero-grid{grid-template-columns:1fr}.hero-note{order:1}.hero-cover{order:2;min-height:340px}.hero-discover{order:3;grid-template-columns:1fr 1fr}.editorial-item{grid-template-columns:70px 1fr}.editorial-item p,.editorial-item .text-link{grid-column:2}.map-card.large,.map-card.mid,.map-card.third{grid-column:span 6}.plan-board,.folder-grid,.manual-grid{grid-template-columns:1fr 1fr}.article-mosaic{grid-template-columns:1fr}.article-card:nth-child(3n){grid-column:auto}.story-grid{grid-template-columns:1fr}.main-story{grid-row:auto}.feature{grid-template-columns:120px 1fr}.principles{grid-template-columns:1fr 1fr}.app-panel{grid-template-columns:1fr}.risk-grid,.privacy-grid{grid-template-columns:1fr 1fr}.brand-statement,.split-prose{grid-template-columns:1fr}.side-index{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1;grid-row:auto}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.97);border-top:1px solid var(--neutral);box-shadow:0 -8px 24px rgba(20,40,70,.07)}.mobile-bottom a{min-height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:12px;color:var(--muted)}.mobile-bottom a span{font-size:17px;line-height:1}.mobile-bottom a b{font-weight:600}.mobile-bottom a.is-current{color:var(--blue)}.site-footer{padding-bottom:130px}}
@media(max-width:620px){.section{padding:54px 0}.page-intro{padding-top:42px}.page-intro p{font-size:16px}.section-head{display:block}.section-head p{margin-top:10px}.explore-groups,.search-columns{grid-template-columns:1fr}.explore-groups section{border-bottom:1px solid var(--neutral);padding-bottom:14px}.hero-note{padding:22px}.hero-note h1{font-size:40px}.hero-indexes{grid-template-columns:1fr}.hero-cover{min-height:300px}.hero-discover{grid-template-columns:1fr}.editorial-item{grid-template-columns:56px 1fr;gap:14px}.editorial-num{font-size:28px}.editorial-item h3{font-size:21px}.map-card.large,.map-card.mid,.map-card.third{grid-column:1/-1}.plan-board,.folder-grid,.principles,.risk-grid,.privacy-grid,.manual-grid,.contact-grid{grid-template-columns:1fr}.feature{grid-template-columns:1fr;gap:10px}.feature ul{columns:1}.directory-wall{columns:1}.notice{grid-template-columns:1fr;gap:4px}.brand-statement h2{font-size:42px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-note{display:block}.app-copy h2{font-size:36px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}