:root{
  --paper:#F4F1E8;--paper-2:#ECE8DD;--white:#FFFDF7;--ink:#111111;--text:#1D1D1D;--muted:#62605B;--soft:#89867E;
  --acid:#D7FF32;--acid-2:#B9F227;--blue:#2457FF;--orange:#FF5938;--deep:#161616;--line:rgba(17,17,17,.22);--line-strong:rgba(17,17,17,.72);
  --shadow:0 16px 36px rgba(30,28,22,.08);--max:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--paper)}
body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:17px;line-height:1.78;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
button,input,textarea,select{font:inherit}
button{color:inherit}
main{min-height:60vh}
.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.narrow{width:min(calc(100% - 48px),900px);margin:0 auto}
.section{padding:104px 0}
.section-tight{padding:70px 0}
.section-dark{background:var(--deep);color:var(--paper)}
.section-paper2{background:var(--paper-2)}
.section-white{background:var(--white)}
.section-blue{background:#E5EAFF}
.section-acid-soft{background:#F1F8C9}
.section-rule{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.eyebrow,.kicker{display:flex;align-items:center;gap:10px;margin:0 0 18px;font-size:12px;line-height:1.2;font-weight:800;letter-spacing:.17em;text-transform:uppercase}
.eyebrow:before,.kicker:before{content:"";width:30px;height:3px;background:var(--acid)}
.section-index{color:var(--blue);font-weight:800;letter-spacing:.08em}
.accent-label{display:inline-block;padding:5px 9px;background:var(--acid);color:var(--ink);font-size:12px;line-height:1.2;font-weight:900;letter-spacing:.12em}
h1,h2,h3,.section-title{margin-top:0;color:var(--ink);line-height:1.06;letter-spacing:-.035em}
h1{font-size:clamp(52px,8.7vw,118px);font-weight:900}
h2{font-size:clamp(34px,4.3vw,58px);font-weight:850}
h3{font-size:clamp(23px,2.3vw,31px);font-weight:820}
p{margin:0 0 1.15em}
.lead{font-size:clamp(20px,2vw,28px);line-height:1.55;color:var(--text)}
.muted{color:var(--muted)}
.text-link{color:var(--blue);font-weight:750;text-decoration-thickness:1px;text-underline-offset:4px}
.main-btn,.outline-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 19px;border:1px solid var(--ink);border-radius:4px;font-weight:800;text-decoration:none;transition:background .18s ease,color .18s ease,transform .18s ease}
.main-btn{background:var(--ink);color:#fff}
.main-btn:hover{background:var(--acid);color:var(--ink);transform:translateY(-1px)}
.outline-btn{background:transparent;color:var(--ink)}
.outline-btn:hover{background:var(--ink);color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(244,241,232,.96);border-bottom:1px solid var(--line-strong)}
.header-inner{width:min(calc(100% - 32px),var(--max));min-height:72px;margin:0 auto;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}
.site-logo{display:flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap}.site-logo img{width:auto;max-width:44px;max-height:44px;object-fit:contain}.site-logo strong{font-size:18px;letter-spacing:-.02em}
.nav-core{display:flex;align-items:center;justify-content:center;gap:24px;min-width:0}.nav-core a{text-decoration:none;color:var(--ink);font-size:15px;font-weight:760;padding:8px 2px;border-bottom:2px solid transparent;white-space:nowrap}.nav-core a:hover,.nav-core a.active{border-bottom-color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:12px}.header-cta{min-height:42px;padding:9px 15px;font-size:14px}
.menu-toggle{width:46px;height:42px;padding:9px;border:1px solid var(--ink);background:transparent;display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:5px;cursor:pointer}.menu-toggle span{display:block;height:2px;background:var(--ink)}.menu-toggle span:nth-child(2){width:70%}.menu-mobile{display:none}
.drawer-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.44);opacity:0;visibility:hidden;transition:.22s ease}
.site-drawer{position:fixed;right:0;top:0;bottom:0;z-index:10001;width:min(92vw,480px);padding:24px 26px 40px;background:var(--ink);color:var(--paper);transform:translateX(102%);transition:transform .24s ease;overflow:auto}
.drawer-open{overflow:hidden}.drawer-open .drawer-overlay{opacity:1;visibility:visible}.drawer-open .site-drawer{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.34)}.drawer-head strong{letter-spacing:.08em}.drawer-close{border:1px solid rgba(255,255,255,.55);background:transparent;color:#fff;padding:8px 11px;cursor:pointer}
.drawer-nav{margin-top:18px}.drawer-nav a{display:grid;grid-template-columns:42px 1fr;gap:10px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.16);color:#fff;text-decoration:none;font-size:clamp(20px,3vw,28px);line-height:1.2;font-weight:800}.drawer-nav a span{font-size:11px;color:var(--acid);letter-spacing:.12em;padding-top:7px}.drawer-nav a:hover{color:var(--acid)}.drawer-note{margin:24px 0 0;color:#c9c6bd;font-size:14px}
.mobile-bottom-nav{display:none}
.hero{padding:54px 0 84px;border-bottom:1px solid var(--ink)}
.hero-grid{width:min(calc(100% - 48px),var(--max));margin:0 auto;display:grid;grid-template-columns:repeat(12,1fr);gap:20px;align-items:end}
.hero-copy{grid-column:1 / span 7}.hero-copy h1{margin-bottom:20px}.hero-copy .subtitle{font-size:clamp(23px,2.6vw,38px);line-height:1.25;font-weight:800;max-width:720px;margin-bottom:20px}.hero-copy .intro{max-width:740px}.hero-meta{display:flex;gap:28px;flex-wrap:wrap;margin:28px 0 0;padding-top:16px;border-top:1px solid var(--ink);font-size:12px;font-weight:800;letter-spacing:.15em}.hero-meta b{color:var(--blue)}
.hero-visual{grid-column:8 / -1;position:relative}.hero-visual img{width:100%;height:auto;object-fit:contain;border:1px solid var(--ink);background:var(--white);padding:8px}.poster-badge{position:absolute;left:-14px;top:18px;background:var(--acid);padding:10px 12px;font-size:12px;line-height:1.15;font-weight:900;letter-spacing:.12em}.poster-no{position:absolute;right:-4px;bottom:-26px;font-size:clamp(58px,8vw,116px);line-height:.8;font-weight:900;color:var(--blue);letter-spacing:-.06em}
.core-strip{border-bottom:1px solid var(--ink);background:var(--white)}.core-strip-grid{width:min(100%,var(--max));margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr)}.core-item{padding:28px;border-right:1px solid var(--ink)}.core-item:last-child{border-right:0}.core-item b{display:block;color:var(--blue);font-size:13px;letter-spacing:.14em;margin-bottom:8px}.core-item h2{font-size:24px;margin-bottom:10px}.core-item p{font-size:14px;line-height:1.65;margin:0;color:var(--muted)}
.index-grid{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.index-item{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:26px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);text-decoration:none;background:transparent;transition:.18s ease}.index-item:hover{background:var(--acid)}.index-item .num{color:var(--blue);font-weight:900}.index-item h3{font-size:22px;margin:0 0 6px}.index-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.index-item:hover p{color:var(--ink)}
.brand-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}.brand-grid img,.editorial-image img{border:1px solid var(--ink);background:var(--white);padding:8px}
.editorial-head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:34px;padding-bottom:16px;border-bottom:1px solid var(--ink)}.editorial-head h2{max-width:760px;margin:0}.editorial-head .section-index{font-size:14px}
.vlog-feature{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:start}.vlog-feature .editorial-image{position:relative}.vlog-feature .editorial-image:after{content:"FEATURE 01";position:absolute;left:12px;bottom:12px;background:var(--ink);color:#fff;padding:7px 9px;font-size:11px;font-weight:900;letter-spacing:.12em}.vlog-points{border-top:1px solid var(--ink)}.vlog-points article{padding:20px 0;border-bottom:1px solid var(--line)}.vlog-points h3{font-size:24px;margin-bottom:8px}.vlog-points p{font-size:15px;color:var(--muted)}
.asym-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:0;border:1px solid var(--ink)}.asym-panel{padding:34px}.asym-panel + .asym-panel{border-left:1px solid var(--ink)}.asym-panel.dark{background:var(--ink);color:var(--paper)}.asym-panel.dark h2,.asym-panel.dark h3{color:#fff}.asym-panel img{margin:20px 0;border:1px solid currentColor}.service-list{list-style:none;padding:0;margin:18px 0 0}.service-list li{padding:11px 0;border-top:1px solid var(--line)}.dark .service-list li{border-color:rgba(255,255,255,.2)}
.linear-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px}.message-stack{border-top:2px solid var(--ink)}.message-row{display:grid;grid-template-columns:50px 1fr;gap:12px;padding:17px 0;border-bottom:1px solid var(--ink)}.message-row b{color:var(--blue)}.topic-index{background:var(--ink);color:var(--paper);padding:30px}.topic-index h2,.topic-index h3{color:#fff}.topic-index a{color:var(--acid)}.topic-index img{border:1px solid rgba(255,255,255,.55);margin:18px 0}
.triple-grid{display:grid;grid-template-columns:1fr .95fr 1.05fr;border:1px solid var(--ink)}.triple-panel{padding:28px;min-width:0}.triple-panel + .triple-panel{border-left:1px solid var(--ink)}.triple-panel h3{font-size:26px}.date-list{list-style:none;padding:0;margin:16px 0}.date-list li{display:grid;grid-template-columns:72px 1fr;gap:12px;border-top:1px solid var(--line);padding:12px 0}.date-list b{color:var(--blue)}.triple-panel img{border:1px solid var(--ink);margin:18px 0}
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}.safety-card{border:1px solid rgba(255,255,255,.34);padding:28px}.safety-card img{border:1px solid rgba(255,255,255,.34);margin-bottom:20px}.safety-card h2{color:#fff}.safety-card p{color:#d0cdc4}.safety-card .accent-label{margin-bottom:14px}
.review-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.review{grid-column:span 4;border-top:1px solid var(--ink);padding:24px 8px 12px;min-height:180px}.review:nth-child(2),.review:nth-child(5){background:#F1F8C9;padding:24px}.review:nth-child(3){grid-column:span 5}.review:nth-child(4){grid-column:span 7}.review b{display:block;color:var(--blue);font-size:13px;letter-spacing:.13em;margin-bottom:12px}.review p{font-size:18px;line-height:1.65}
.faq-list{border-top:1px solid var(--ink)}.faq-item{border-bottom:1px solid var(--ink)}.faq-item button{width:100%;display:grid;grid-template-columns:56px 1fr auto;gap:16px;align-items:center;text-align:left;border:0;background:transparent;padding:20px 0;cursor:pointer}.faq-item button .faq-no{color:var(--blue);font-weight:900}.faq-item button strong{font-size:20px}.faq-item button .plus{font-size:26px;line-height:1}.faq-answer{display:block;padding:0 0 22px 72px;color:var(--muted)}.faq-item.open .plus{transform:rotate(45deg)}
.notice-band{display:grid;grid-template-columns:220px 1fr;gap:36px;padding:32px;border:1px solid var(--ink);background:var(--acid)}.notice-band h2{font-size:34px;margin:0}.notice-band p:last-child{margin-bottom:0}
.about-mini{display:grid;grid-template-columns:.65fr 1.35fr;gap:60px;border-top:1px solid var(--ink);padding-top:34px}.about-mini h2{font-size:36px}.about-mini p{font-size:18px}
/* inner page shared visual system */
.inner-hero{padding:68px 0 56px;border-bottom:1px solid var(--ink)}.inner-hero-grid{width:min(calc(100% - 48px),var(--max));margin:0 auto;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:end}.inner-title{grid-column:1 / span 8}.inner-title h1{font-size:clamp(48px,7.4vw,94px);margin-bottom:18px}.inner-title .lead{max-width:760px}.inner-code{grid-column:10 / -1;text-align:right;color:var(--blue);font-size:clamp(54px,8vw,108px);line-height:.8;font-weight:900;letter-spacing:-.06em}.inner-meta{margin-top:24px;border-top:1px solid var(--ink);padding-top:14px;display:flex;gap:18px;flex-wrap:wrap;font-size:12px;font-weight:800;letter-spacing:.12em}
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}.feature-split.reverse .feature-media{order:2}.feature-media img{width:100%;border:1px solid var(--ink);background:var(--white);padding:8px}.feature-copy h2{font-size:clamp(34px,4vw,52px)}.feature-copy .lead{font-size:22px}.feature-copy p{color:var(--muted)}
.numbered-sections{border-top:1px solid var(--ink)}.numbered-row{display:grid;grid-template-columns:110px 1fr;gap:30px;padding:34px 0;border-bottom:1px solid var(--ink)}.numbered-row .big-no{font-size:48px;line-height:1;color:var(--blue);font-weight:900;letter-spacing:-.04em}.numbered-row h2{font-size:32px;margin-bottom:12px}.numbered-row p{max-width:900px}
.info-mosaic{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.info-tile{padding:26px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);min-height:210px}.info-tile:nth-child(2){background:#E5EAFF}.info-tile:nth-child(4){grid-column:span 2;background:#F1F8C9}.info-tile h3{font-size:25px}.info-tile b{color:var(--blue)}
.step-flow{counter-reset:step;border-top:1px solid var(--ink)}.step{display:grid;grid-template-columns:90px 1fr;gap:28px;padding:28px 0;border-bottom:1px solid var(--ink)}.step-no{font-size:14px;color:var(--blue);font-weight:900;letter-spacing:.14em}.step h2{font-size:30px;margin-bottom:8px}
.rule-board{display:grid;grid-template-columns:.72fr 1.28fr;border:1px solid var(--ink)}.rule-board .rule-head{padding:30px;background:var(--ink);color:#fff}.rule-board .rule-head h2{color:#fff}.rule-board .rule-body{padding:30px}.rule-list{list-style:none;margin:0;padding:0}.rule-list li{padding:13px 0;border-bottom:1px solid var(--line)}
.pullquote{padding:34px;border-top:7px solid var(--blue);background:var(--white);font-size:clamp(23px,3vw,36px);line-height:1.35;font-weight:800}.pullquote small{display:block;font-size:13px;color:var(--muted);font-weight:700;margin-top:16px;letter-spacing:.08em}
.inner-review{display:grid;grid-template-columns:120px 1fr;gap:26px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:28px 0}.inner-review b{font-size:12px;color:var(--blue);letter-spacing:.14em}.inner-review p{font-size:20px;margin:0}
.inner-faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:44px}.inner-faq h2{font-size:42px}.inner-faq-list article{padding:20px 0;border-top:1px solid var(--ink)}.inner-faq-list h3{font-size:22px;margin-bottom:8px}.inner-faq-list p{color:var(--muted)}
.page-dark .inner-hero{background:var(--ink);color:var(--paper)}.page-dark .inner-hero h1,.page-dark .inner-hero .lead{color:#fff}.page-dark .inner-hero .inner-meta{border-color:rgba(255,255,255,.4)}
.page-blue .inner-hero{background:#E5EAFF}.page-acid .inner-hero{background:#F1F8C9}.page-white .inner-hero{background:var(--white)}
/* page-specific accents */
.page-vlog .feature-media img,.page-discover .feature-media img{border-width:2px}.page-social .inner-code,.page-chat .inner-code{color:var(--orange)}
.page-match .info-tile:nth-child(3),.page-account-guide .info-tile:nth-child(3){background:var(--acid)}
.page-safety .rule-board,.page-privacy .rule-board{border-color:var(--line-strong)}
.page-activity .step-no{color:var(--orange)}
.page-app .feature-split{grid-template-columns:.78fr 1.22fr}.page-app .feature-media img,.page-download .feature-media img{max-height:650px;object-fit:contain;margin:auto}
/* footer */
.site-footer{background:var(--ink);color:var(--paper);padding:68px 0 34px}.footer-inner{width:min(calc(100% - 48px),var(--max));margin:0 auto}.footer-brand{display:grid;grid-template-columns:auto 1fr;gap:22px 36px;align-items:start;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.32)}.footer-brand .accent-label{grid-column:1}.footer-wordmark{grid-column:1 / -1;font-size:clamp(52px,10vw,136px);line-height:.82;font-weight:900;letter-spacing:-.06em;color:#fff}.footer-brand p{max-width:760px;color:#c9c6bd}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:36px 0}.footer-grid section{display:flex;flex-direction:column;gap:8px}.footer-grid h2{font-size:15px;color:var(--acid);letter-spacing:.09em;margin-bottom:8px}.footer-grid a{color:#fff;text-decoration:none;font-size:14px}.footer-grid a:hover{color:var(--acid)}.footer-grid p{font-size:13px;color:#bdb9af}.footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(255,255,255,.32);padding-top:20px;color:#a9a59c;font-size:12px;letter-spacing:.08em}
@media (max-width:1100px){
  .nav-core{gap:14px}.nav-core a{font-size:14px}.hero-copy{grid-column:1 / span 6}.hero-visual{grid-column:7 / -1}.brand-grid{gap:36px}.review{grid-column:span 6}.review:nth-child(3),.review:nth-child(4){grid-column:span 6}.triple-grid{grid-template-columns:1fr 1fr}.triple-panel:nth-child(3){grid-column:1/-1;border-left:0;border-top:1px solid var(--ink)}
}
@media (max-width:860px){
  body{font-size:16px;padding-bottom:60px}.container,.narrow,.hero-grid,.inner-hero-grid,.footer-inner{width:min(calc(100% - 36px),var(--max))}.section{padding:78px 0}.header-inner{grid-template-columns:auto 1fr auto;gap:10px;min-height:64px}.menu-mobile{display:flex}.menu-desktop,.nav-core{display:none}.site-logo{justify-self:center}.site-logo strong{display:none}.header-actions{justify-self:end}.header-cta{padding:8px 11px;min-height:40px}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:9998;display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border-top:1px solid var(--ink);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav a{text-align:center;padding:12px 6px;color:var(--ink);text-decoration:none;font-size:13px;font-weight:800}.mobile-bottom-nav a:hover{background:var(--acid)}
  .hero{padding:42px 0 62px}.hero-copy,.hero-visual,.inner-title,.inner-code{grid-column:1/-1}.hero-visual{margin-top:18px}.poster-no{right:4px;bottom:-18px}.core-strip-grid{grid-template-columns:repeat(2,1fr)}.core-item:nth-child(2){border-right:0}.core-item:nth-child(-n+2){border-bottom:1px solid var(--ink)}.index-grid{grid-template-columns:1fr}.brand-grid,.vlog-feature,.asym-grid,.linear-grid,.safety-grid,.feature-split,.feature-split.reverse,.inner-faq,.rule-board{grid-template-columns:1fr}.brand-grid{gap:34px}.asym-panel + .asym-panel{border-left:0;border-top:1px solid var(--ink)}.linear-grid{gap:24px}.feature-split.reverse .feature-media{order:0}.triple-grid{grid-template-columns:1fr}.triple-panel + .triple-panel,.triple-panel:nth-child(3){border-left:0;border-top:1px solid var(--ink);grid-column:auto}.review-grid{grid-template-columns:1fr}.review,.review:nth-child(3),.review:nth-child(4){grid-column:1}.notice-band,.about-mini,.numbered-row,.step,.inner-review{grid-template-columns:1fr}.notice-band{gap:18px}.about-mini{gap:18px}.info-mosaic{grid-template-columns:1fr}.info-tile:nth-child(4){grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.inner-code{text-align:left;margin-top:18px}.feature-split{gap:28px}
}
@media (max-width:560px){
  .container,.narrow,.hero-grid,.inner-hero-grid,.footer-inner{width:min(calc(100% - 32px),var(--max))}.section{padding:62px 0}.site-logo img{max-width:38px;max-height:38px}.header-cta{font-size:12px;padding:7px 10px}.menu-toggle{width:42px;height:40px}.hero-meta{gap:14px}.core-strip-grid{grid-template-columns:1fr}.core-item{border-right:0!important;border-bottom:1px solid var(--ink)}.core-item:last-child{border-bottom:0}.index-item{grid-template-columns:46px 1fr;padding:20px}.editorial-head{display:block}.editorial-head .section-index{margin-top:12px;display:block}.asym-panel,.topic-index,.triple-panel,.safety-card{padding:22px}.faq-item button{grid-template-columns:38px 1fr auto;gap:8px}.faq-answer{padding-left:46px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.footer-wordmark{font-size:54px}.site-drawer{padding:20px 22px 34px}.drawer-nav a{font-size:22px}.inner-title h1{font-size:clamp(44px,16vw,70px)}.numbered-row{padding:26px 0}.numbered-row .big-no{font-size:38px}
}

.inner-hero.page-dark{background:var(--ink);color:var(--paper)}
.inner-hero.page-dark h1,.inner-hero.page-dark .lead{color:#fff}
.inner-hero.page-dark .inner-meta{border-color:rgba(255,255,255,.4)}
.inner-hero.page-blue{background:#E5EAFF}
.inner-hero.page-acid{background:#F1F8C9}
.inner-hero.page-white{background:var(--white)}