:root{
  --bg:#FFF6F4;--deep:#F6E4E2;--card:#FFFFFF;--soft:#FBECEA;--title:#1C1212;--text:#3E2424;--muted:#6E4848;--light:#9A7070;--red:#B4232C;--bright:#E23B44;--dark:#7A1520;--gold:#C4A06A;--brown:#1C1212;--line:rgba(180,35,44,.16);--shadow:0 12px 28px rgba(28,18,18,.08);--radius:12px;--shell:960px
}
*{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;font-size:15px;line-height:1.7;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:var(--dark);text-decoration:none}a:hover{text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(var(--shell),calc(100% - 32px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:#fff;color:var(--dark);padding:10px 14px;border-radius:8px;border:1px solid var(--line)}.skip-link:focus{top:12px}
.site-header{position:fixed;inset:0 0 auto;z-index:100}.top-strip{height:18px;background:var(--dark);color:#fff;font-size:12px;line-height:18px}.top-strip-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.plain-btn{border:0;background:transparent;color:#fff;padding:0 4px;min-height:18px}.brand-bar{height:54px;background:rgba(255,246,244,.98);border-bottom:1px solid var(--line);backdrop-filter:saturate(120%) blur(8px)}.brand-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-mark{display:inline-flex;align-items:center;min-height:44px}.brand-logo,.footer-logo,.fold-logo{height:24px;max-width:180px;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:800;color:var(--title)}.brand-actions{display:flex;gap:8px;align-items:center}.header-app-link,.menu-open{height:40px;min-width:72px;padding:0 14px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px}.header-app-link{background:linear-gradient(135deg,var(--bright) 0%,var(--red) 55%,var(--dark) 100%);color:#fff;box-shadow:0 6px 16px rgba(180,35,44,.18)}.menu-open{border:1px solid var(--line);background:#fff;color:var(--dark)}.quick-nav{height:44px;background:var(--soft);border-bottom:1px solid var(--line)}.quick-nav-inner{height:44px;display:flex;align-items:center;gap:14px}.quick-seal{width:22px;height:22px;display:grid;place-items:center;background:#fff;color:var(--dark);border:1px solid var(--red);border-radius:4px;font-size:12px;font-weight:800}.quick-link{min-height:32px;padding:5px 10px;border-radius:8px;display:inline-flex;align-items:center;gap:6px}.quick-link.is-current{background:var(--dark);color:#fff;outline:1px solid var(--gold);box-shadow:0 6px 16px rgba(180,35,44,.18)}
.site-main{padding-top:132px;padding-bottom:36px}.breadcrumb{display:flex;gap:8px;align-items:center;padding-top:18px;color:var(--light);font-size:13px}.breadcrumb a{color:var(--muted)}h1,h2,h3{color:var(--title);margin:0 0 12px;line-height:1.3}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 14px}.lead{font-size:17px;color:var(--dark);font-weight:650}.eyebrow{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:999px;background:var(--deep);color:var(--dark);font-size:12px;font-weight:700;margin-bottom:10px}.section-heading{margin-bottom:18px}.section-heading h2{margin-bottom:0}
.btn{min-height:42px;padding:0 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;transition:filter .18s ease,box-shadow .18s ease,transform .18s ease}.btn-primary{background:linear-gradient(135deg,var(--bright) 0%,var(--red) 55%,var(--dark) 100%);color:#fff;box-shadow:0 6px 16px rgba(180,35,44,.18)}.btn-secondary{background:#fff;color:var(--dark);border:1px solid var(--line)}.btn:hover,.header-app-link:hover,.quick-link.is-current:hover,.mobile-bottom a.is-current:hover{filter:brightness(1.04);box-shadow:0 0 0 3px rgba(226,59,68,.28),0 10px 24px rgba(122,21,32,.28)}.btn:active,.header-app-link:active,.quick-link.is-current:active,.mobile-bottom a.is-current:active{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(196,160,106,.42),0 0 22px rgba(226,59,68,.50)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:2px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.text-link{font-weight:750;border-bottom:1px solid rgba(122,21,32,.28);padding-bottom:2px}
.media-slot{display:flex;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center;display:block}.landscape-slot{width:100%;height:168px}.short-slot{height:160px}.square-slot{width:240px;height:176px}.app-tall-slot{width:240px;height:320px}.app-icon-slot{width:58px;height:58px;background:var(--soft);border:1px solid var(--line);border-radius:14px;display:grid;place-items:center;margin-top:10px}.app-icon-slot img{width:48px;height:48px;object-fit:contain}.brand-image-slot{min-height:220px}
.home-intro{padding:54px 0 42px}.intro-index{display:flex;gap:8px;margin-bottom:14px}.intro-index span{font-size:13px;color:var(--dark);border:1px solid var(--line);background:#fff;padding:4px 9px;border-radius:999px}.home-intro p{max-width:760px}.home-intro .btn{margin-top:8px}.home-cut,.twin-red,.page-pair,.long-section,.home-faq,.brand-story,.topic-strip{padding:32px 0}.cut-layout{display:grid;grid-template-columns:260px 1fr;gap:26px;align-items:center}.cut-copy{padding:18px 20px;background:#fff;border-left:4px solid var(--red);box-shadow:var(--shadow);border-radius:0 var(--radius) var(--radius) 0}.twin-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.twin-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.twin-card.featured{border-top:4px solid var(--red)}.twin-card .media-slot{margin-bottom:18px}.twin-card a,.paper-card a,.related-entrances a,.help-rows a,.topic-directory a{font-weight:700}.page-pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.paper-card{background:linear-gradient(180deg,#fff 0%,#fff 86%,var(--soft) 86%,var(--soft) 100%);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.paper-card .media-slot{margin-bottom:16px}.status-feature,.scene-panel,.note-band{width:min(var(--shell),calc(100% - 32px));margin:32px auto;display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:center;background:var(--deep);padding:20px;border-radius:var(--radius)}.status-pill{display:inline-flex;align-items:center;min-height:28px;padding:3px 10px;border-radius:999px;background:var(--dark);color:#fff;font-size:12px;font-weight:800;margin-bottom:10px}.note-band{grid-template-columns:1fr 320px;background:#fff;border:1px solid var(--line)}.topic-lines{display:grid;gap:10px}.topic-lines a{display:grid;grid-template-columns:130px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px}.scene-panel{grid-template-columns:1fr 320px;background:var(--soft)}.app-wrap{display:grid;grid-template-columns:260px 1fr;gap:30px;align-items:start;padding:32px 0}.app-visuals{display:flex;flex-direction:column;align-items:flex-start}.app-copy{padding-top:16px}.long-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.home-faq details,.faq-list details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 16px;margin-bottom:10px}.home-faq summary,.faq-list summary{cursor:pointer;color:var(--title);font-weight:750;padding:14px 0}.home-faq details p,.faq-list details p{padding-bottom:14px}.brand-story{background:linear-gradient(135deg,var(--deep),var(--soft));padding-inline:22px;border-radius:var(--radius);margin-top:28px}
.inner-hero,.paper-hero,.legal-hero,.help-hero,.faq-hero,.contact-hero{padding:38px 0 26px}.compact-hero{max-width:820px}.cut-hero,.essay-hero,.directory-hero,.letter-hero{display:grid;grid-template-columns:1fr 260px;gap:28px;align-items:center;padding:36px 0}.two-red-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-bottom:28px}.red-column{background:#fff;border-radius:var(--radius);padding:20px;border:1px solid var(--line)}.red-column.visual-first{border-top:5px solid var(--bright)}.red-column.text-first{border-top:5px solid var(--dark)}.red-column .media-slot{margin-bottom:16px}.source-board{background:var(--deep);padding:24px;border-radius:var(--radius);margin-top:18px}.source-title{display:flex;gap:16px;align-items:baseline;flex-wrap:wrap}.source-title span{font-weight:800;color:var(--dark)}.source-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.source-steps>div{background:#fff;padding:14px;border-radius:10px}.editorial-note,.verification-copy,.schedule-explain,.scene-note,.topic-method,.help-more,.faq-more,.contact-note,.policy-note,.privacy-summary,.safety-panel,.legal-note{padding:28px 0}.related-entrances,.entry-ribbon{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:20px 0 30px}.related-entrances a,.entry-ribbon a{background:#fff;border:1px solid var(--line);padding:16px;border-radius:10px}.related-entrances span,.entry-ribbon span{display:block;color:var(--muted);font-size:13px;margin-top:5px}.split-cut{display:grid;grid-template-columns:1fr 280px;gap:22px;padding:10px 0 28px}.split-main{background:#fff;border-left:6px solid var(--red);padding:22px;border-radius:0 var(--radius) var(--radius) 0;box-shadow:var(--shadow)}.split-aside{align-self:start;background:var(--brown);color:#fff;padding:20px;border-radius:var(--radius)}.split-aside strong{color:#fff}.split-aside p{color:#FBECEA;margin-top:8px}.gap-ledger{padding:26px 0}.gap-row{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}.gap-row span{font-weight:800;color:var(--dark)}.paper-stack{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;padding-bottom:28px}.paper-sheet{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.large-sheet{grid-row:span 2}.large-sheet .media-slot{margin-bottom:18px}.narrow-sheet{background:var(--soft)}.reading-guide{padding:24px;background:var(--deep);border-radius:var(--radius)}.route-card{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:28px 0}.status-hero .media-slot{margin-top:16px}.status-list{display:grid;gap:12px;padding-bottom:20px}.status-list article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.status-working{background:var(--red)}.status-checking{background:var(--gold);color:var(--title)}.status-pending{background:var(--muted)}.essay-body{max-width:820px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.essay-body h2{margin-top:24px}.editor-mark{background:var(--soft);border-left:4px solid var(--gold);padding:14px}.directory-hero{grid-template-columns:300px 1fr}.topic-directory{display:grid;gap:14px}.topic-directory article{display:grid;grid-template-columns:90px 1fr 140px;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}.topic-directory article h2,.topic-directory article p{margin-bottom:0}.topic-number{color:var(--dark);font-weight:900;font-size:20px}.scene-hero{padding:36px 0}.scene-hero .media-slot{margin-top:18px}.scene-flow{display:grid;grid-template-columns:1fr 1fr;gap:14px}.scene-flow article{padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.letter-sheet{background:#fff;border:1px solid var(--line);padding:28px;border-radius:var(--radius)}.letter-sheet h2{margin-top:22px}.letter-sheet h2:first-child{margin-top:0}.letter-actions{display:flex;gap:10px;padding:22px 0}.app-detail-hero{display:grid;grid-template-columns:270px 1fr;gap:30px;align-items:start;padding:36px 0}.single-app{align-items:center}.wrap-text-block{max-width:820px;background:#fff;border:1px solid var(--line);padding:28px;border-radius:var(--radius)}.wrap-text-block h2{margin-top:22px}.wrap-text-block h2:first-child{margin-top:0}.install-steps{display:grid;grid-template-columns:1fr 1fr;gap:14px}.install-steps article{background:#fff;border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.install-steps article>span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--deep);color:var(--dark);font-weight:800;margin-bottom:10px}.legal-sections,.privacy-flow{display:grid;gap:12px}.legal-sections article,.privacy-flow article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.policy-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.policy-grid article{background:#fff;border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.help-rows{display:grid;gap:12px}.help-rows article{display:grid;grid-template-columns:160px 1fr 120px;gap:18px;align-items:center;background:#fff;border-bottom:1px solid var(--line);padding:18px}.help-rows article h2,.help-rows article p{margin-bottom:0}.faq-list{max-width:840px}.contact-paths{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-paths article{background:#fff;border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.about-hero{padding:28px 0}.about-banner{width:100%;height:200px;margin-bottom:24px}.about-flow{display:grid;grid-template-columns:1fr 1fr;gap:14px}.about-flow article{background:#fff;border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.about-brand-card{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:center;padding:30px 0}
.site-footer{background:var(--brown);color:#FBECEA;border-top:1px solid var(--red);font-size:13px;padding:30px 0 calc(30px + env(safe-area-inset-bottom))}.footer-top{display:grid;grid-template-columns:220px 1fr;gap:30px}.footer-brand{display:flex;flex-direction:column;gap:6px}.footer-brand strong{font-size:16px}.footer-brand a,.footer-brand span{color:#FBECEA}.footer-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.footer-groups section{display:flex;flex-direction:column;gap:7px}.footer-groups h2{font-size:14px;color:#fff;margin:0 0 6px}.footer-groups a{color:#FBECEA}.footer-note{border-top:1px solid rgba(251,236,234,.16);margin-top:22px;padding-top:18px;color:#FBECEA}.footer-note p{margin-bottom:8px}
.page-overlay{position:fixed;inset:0;background:rgba(28,18,18,.42);z-index:120;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s ease}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.fold-menu{position:fixed;right:16px;top:82px;width:min(420px,calc(100% - 32px));max-height:68vh;background:#fff;z-index:130;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px rgba(28,18,18,.18);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px) scale(.99);transition:opacity .18s ease,transform .18s ease,visibility .18s ease;overflow:auto}.fold-menu.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.fold-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--line);z-index:2}.fold-brand{display:flex;align-items:center;gap:10px}.fold-close,.search-close{border:1px solid var(--line);background:#fff;color:var(--dark);min-height:40px;padding:0 12px;border-radius:9px}.fold-body{padding:10px 14px 16px}.fold-body section{padding:8px 0}.fold-body h2{font-size:14px;color:var(--muted);margin:0 0 6px}.fold-body a{display:block;padding:9px 6px;border-radius:8px}.fold-body a:hover{background:var(--soft)}.fold-body span{display:block;font-weight:750;color:var(--title)}.fold-body small{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-panel{position:fixed;left:50%;top:78px;transform:translateX(-50%) translateY(-8px);z-index:135;width:min(720px,calc(100% - 32px));visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease,transform .18s ease,visibility .18s ease}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translateX(-50%) translateY(0)}.search-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px rgba(28,18,18,.18);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-row{display:grid;grid-template-columns:1fr 90px;gap:8px}.search-row input{min-height:44px;border:1px solid var(--line);border-radius:9px;padding:0 12px;background:#fff;color:var(--text)}.search-row button{border:0;border-radius:9px;background:var(--dark);color:#fff}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.search-presets a{padding:7px 10px;border-radius:999px;background:var(--soft);font-size:13px}.search-hint{color:var(--muted);margin:12px 0 0}.mobile-bottom{display:none}
@media (max-width:760px){
  .quick-nav{display:none}.site-main{padding-top:72px;padding-bottom:72px}.brand-bar,.brand-inner{height:54px}.top-strip,.top-strip-inner{height:18px}.header-app-link,.menu-open{min-width:64px;padding:0 10px}.shell{width:calc(100% - 32px)}
  .cut-layout,.twin-grid,.page-pair-grid,.status-feature,.note-band,.scene-panel,.app-wrap,.cut-hero,.essay-hero,.directory-hero,.letter-hero,.two-red-layout,.split-cut,.paper-stack,.route-card,.app-detail-hero,.install-steps,.policy-grid,.contact-paths,.about-flow,.about-brand-card{grid-template-columns:1fr}
  .status-feature,.note-band,.scene-panel{width:calc(100% - 32px)}.square-slot,.app-tall-slot{width:min(240px,100%)}.cut-layout .square-slot{margin-inline:auto}.topic-lines a{grid-template-columns:1fr}.source-steps{grid-template-columns:1fr 1fr}.related-entrances,.entry-ribbon{grid-template-columns:1fr}.gap-row{grid-template-columns:1fr;gap:4px}.large-sheet{grid-row:auto}.topic-directory article{grid-template-columns:1fr}.scene-flow{grid-template-columns:1fr}.help-rows article{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr 1fr;gap:18px}.about-banner{height:200px}
  .fold-menu{top:76px;right:5%;width:90%;max-height:68vh}.search-panel{inset:0;transform:none;width:100%;height:100%;background:var(--dark);padding:72px 16px 20px;overflow:auto}.search-panel.is-open{transform:none}.search-card{background:var(--dark);border-color:rgba(255,255,255,.16);color:#fff;box-shadow:none}.search-head strong,.search-card label,.search-card p{color:#fff}.search-close{background:transparent;border-color:rgba(255,255,255,.3);color:#fff}.search-row input{background:#fff}.search-row button{background:#fff;color:var(--dark)}.search-presets a{background:rgba(255,255,255,.12);color:#fff}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:110;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line)}.mobile-bottom a{display:grid;place-items:center;color:var(--muted);min-height:48px;font-size:13px}.mobile-bottom a.is-current{background:var(--dark);color:#fff;box-shadow:0 6px 16px rgba(180,35,44,.18)}.page-overlay{z-index:105}.fold-menu,.search-panel{z-index:130}.site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}
@media (max-width:480px){.source-steps,.footer-groups{grid-template-columns:1fr}.button-row,.letter-actions{flex-direction:column}.button-row .btn,.letter-actions .btn{width:100%}.home-intro{padding-top:38px}.topic-directory article{padding:16px}.app-visuals{align-items:center}}

.supplement-block{padding:28px 0;border-top:1px solid var(--line)}.supplement-block h2{margin-top:22px}.supplement-block h2:first-child{margin-top:0}.supplement-block p{max-width:860px}