:root{--bg:#F4F1F8;--deep:#E4DEEC;--paper:#FBF8FF;--soft:#EEE8F4;--title:#161418;--text:#2A242C;--muted:#5A5460;--aux:#7A7480;--blue:#4A8AB8;--pink:#C46A8A;--green:#6A9A48;--gold:#C4A04A;--purple:#6A4A9A;--border:rgba(22,20,24,.12);--shadow:0 12px 28px rgba(22,20,24,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.shell{width:min(960px,calc(100% - 32px));margin:0 auto}.top-note{height:18px;background:var(--title);color:var(--gold);font-size:12px;position:fixed;inset:0 0 auto;z-index:70}.top-note-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:none;color:var(--gold);padding:0 4px;cursor:pointer}.site-head{height:54px;background:var(--paper);border-bottom:1px solid rgba(106,74,154,.25);position:fixed;top:18px;left:0;right:0;z-index:65}.head-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;min-height:44px}.brand-img{display:flex;align-items:center}.brand-img img,.footer-logo img,.sheet-brand img{height:24px;width:auto;max-width:118px;object-fit:contain}.brand-fallback{font-weight:800;font-size:16px;margin-left:4px}.brand-img:has(img)+.brand-fallback{display:none}.head-actions{display:flex;gap:8px;align-items:center}.head-link,.menu-button{height:40px;display:inline-flex;align-items:center;padding:0 14px;border-radius:10px;border:1px solid rgba(106,74,154,.28);background:var(--paper);color:var(--title);cursor:pointer}.head-link{background:linear-gradient(135deg,var(--blue),var(--pink) 48%,var(--purple));color:var(--paper);border:0;box-shadow:0 6px 16px rgba(106,74,154,.18)}.pin-nav{height:44px;background:var(--paper);position:fixed;top:72px;left:0;right:0;z-index:60;border-bottom:1px solid var(--border)}.pin-inner{height:44px;display:flex;align-items:center;gap:10px}.pin-item{min-height:36px;display:inline-flex;align-items:center;gap:7px;padding:4px 10px;border-radius:10px}.pin-dot{width:18px;height:18px;border:2px solid var(--blue);border-radius:50%;display:inline-block}.pin-item.active{box-shadow:0 6px 16px rgba(106,74,154,.18);background:rgba(106,74,154,.08)}.pin-item.active .pin-dot{background:var(--purple);border-color:var(--gold);box-shadow:0 0 0 3px rgba(196,160,74,.18)}.main-shell{padding-top:140px;padding-bottom:54px}.breadcrumb{font-size:13px;color:var(--muted);margin:6px 0 18px}.breadcrumb a{color:var(--purple)}h1,h2,h3{color:var(--title);line-height:1.3;margin:0 0 12px}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.hero-intro,.section-card,.content-block,.policy-block,.faq-item,.center-card,.status-row,.topic-row{background:var(--paper);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.hero-intro{padding:24px;margin-bottom:22px;position:relative;overflow:hidden}.hero-intro:before{content:"";position:absolute;width:90px;height:6px;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--pink),var(--green),var(--gold),var(--purple));top:0;left:24px}.hero-pins{display:flex;gap:10px;margin-bottom:14px}.mini-pin{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}.mini-pin:before{content:"";width:11px;height:11px;border-radius:50%;border:2px solid var(--blue)}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:42px;padding:0 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;transition:.18s;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,var(--blue),var(--pink) 48%,var(--purple));color:var(--paper);box-shadow:0 6px 16px rgba(106,74,154,.18)}.btn.secondary{background:var(--paper);border-color:var(--purple);color:var(--title)}.btn:hover,.head-link:hover,.pin-item.active:hover,.mobile-bar a.active:hover{filter:brightness(1.05);box-shadow:0 0 0 3px rgba(196,106,138,.28),0 10px 24px rgba(74,138,184,.28)}.btn:active,.head-link:active,.pin-item.active:active,.mobile-bar a.active:active{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(196,160,74,.40),0 0 22px rgba(106,74,154,.45)}a:focus-visible,button:focus-visible{outline:2px solid var(--purple);outline-offset:2px}.section{margin:22px 0}.section-card,.content-block,.policy-block{padding:20px}.media-round{width:240px;height:176px;border-radius:50%;background:var(--paper);display:flex;align-items:center;justify-content:center;border:1px solid var(--border);overflow:hidden;flex:0 0 auto}.media-slot{height:168px;background:var(--paper);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot.short{height:160px}.media-slot.banner{height:200px}.media-slot.app{width:240px;height:320px}.media-slot img,.media-round img{width:100%;height:100%;object-fit:contain;object-position:center}.split-cut{display:grid;grid-template-columns:240px 1fr;gap:20px;align-items:center}.double-color{display:grid;grid-template-columns:1fr 1fr;gap:16px}.double-color .section-card:first-child{border-top:4px solid var(--blue)}.double-color .section-card:last-child{border-top:4px solid var(--pink)}.pin-pages{display:grid;grid-template-columns:1fr 1fr;gap:16px}.pin-pages .section-card{position:relative;padding-top:26px}.pin-pages .section-card:before{content:"";position:absolute;top:12px;left:18px;width:10px;height:10px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 3px rgba(196,160,74,.14)}.topic-list,.status-list,.check-list{display:grid;gap:12px}.topic-row,.status-row{padding:16px}.topic-row strong,.status-row strong{display:block;margin-bottom:5px}.status-row{display:grid;grid-template-columns:130px 1fr;gap:14px}.status-tag{display:inline-flex;justify-content:center;align-items:center;border-radius:999px;padding:3px 10px;background:var(--deep);font-size:13px;color:var(--purple)}.app-wrap{display:grid;grid-template-columns:1fr 260px;gap:20px;align-items:end}.app-art{display:grid;gap:12px;justify-items:center}.app-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center}.app-icon img{width:48px;height:48px;object-fit:contain}.method-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.method-grid .content-block:nth-child(odd){border-left:4px solid var(--green)}.method-grid .content-block:nth-child(even){border-left:4px solid var(--gold)}.center-card{max-width:720px;margin:0 auto;padding:28px;text-align:center}.center-card p{text-align:left}.notice{background:var(--deep);border-left:4px solid var(--purple);padding:14px 16px;border-radius:0 10px 10px 0;margin:14px 0}.faq-list{display:grid;gap:14px}.faq-item{padding:18px}.faq-item h2{font-size:17px}.policy-block h2{margin-top:4px}.about-images{display:grid;gap:16px}.site-footer{background:var(--title);color:var(--bg);border-top:1px solid var(--gold);padding:28px 0 76px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-grid h2{font-size:14px;color:var(--gold);margin-bottom:8px}.footer-grid a{display:block;color:var(--bg);font-size:13px;padding:3px 0}.footer-note,.footer-copy{font-size:13px;color:#d9d4dd;margin-top:18px}.overlay{position:fixed;inset:0;background:rgba(22,20,24,.48);z-index:80;opacity:0;pointer-events:none;transition:.18s}.overlay.show{opacity:1;pointer-events:auto}.menu-sheet{position:fixed;left:0;right:0;bottom:0;z-index:90;background:var(--paper);max-height:220px;transform:translateY(105%);transition:.18s;visibility:hidden;pointer-events:none;border-radius:16px 16px 0 0;overflow:auto}.menu-sheet.open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--paper);z-index:2}.sheet-brand{display:flex;align-items:center;gap:8px}.sheet-close,.search-head button{min-height:40px;border:1px solid var(--purple);border-radius:9px;background:var(--paper);color:var(--title);padding:0 13px}.sheet-groups{display:grid;grid-template-columns:1.15fr 1.15fr .8fr 1.4fr;gap:14px;padding:12px 16px 18px}.sheet-groups h2{font-size:14px;margin-bottom:6px;color:var(--purple)}.sheet-groups a{display:block;padding:5px 0}.sheet-groups b{display:block;font-size:13px}.sheet-groups span{display:block;font-size:12px;color:var(--muted);line-height:1.45}.search-panel{position:fixed;top:72px;left:0;right:0;z-index:88;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s}.search-panel.open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.search-card{width:min(720px,calc(100% - 32px));margin:0 auto;background:var(--paper);border:1px solid var(--border);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;align-items:center}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{border:1px solid var(--border);border-radius:999px;padding:7px 12px;background:var(--soft)}.mobile-bar{display:none}
@media(max-width:720px){.pin-nav{display:none}.main-shell{padding-top:92px;padding-bottom:74px}.head-actions{gap:4px}.head-link,.menu-button{padding:0 10px}.split-cut,.double-color,.pin-pages,.app-wrap,.method-grid{grid-template-columns:1fr}.split-cut .media-round{margin:0 auto}.media-slot.app{width:min(240px,100%)}.status-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.menu-sheet{max-height:64vh}.sheet-groups{grid-template-columns:1fr 1fr}.search-panel{top:0;bottom:0;background:var(--title);padding-top:18px}.search-card{min-height:100%;width:100%;border:0;border-radius:0;background:var(--title);color:var(--gold)}.search-card strong,.search-card p{color:var(--gold)}.search-head button{background:var(--paper)}.search-links a{background:transparent;border-color:rgba(196,160,74,.45);color:var(--paper)}.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:75;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border-top:1px solid var(--border)}.mobile-bar a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bar a.active{background:var(--purple);color:var(--paper);box-shadow:0 6px 16px rgba(106,74,154,.18)}.site-footer{padding-bottom:90px}}

/* v5 layout refresh */
.hero-intro{background:linear-gradient(180deg,#FBF8FF 0%,#F7F2FA 100%)}
.hero-intro:before{width:116px;height:5px}
.ribbon-list{display:grid;gap:10px;margin:18px 0}.ribbon-item{display:grid;grid-template-columns:118px 1fr;gap:14px;align-items:start;background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:15px 16px}.ribbon-item b{color:var(--purple)}
.story-stack{display:grid;gap:14px}.story-block{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.story-block:nth-child(2n){border-left:4px solid var(--blue)}.story-block:nth-child(2n+1){border-left:4px solid var(--pink)}
.phase-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.phase-strip article{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}.phase-strip article:nth-child(1){border-top:4px solid var(--blue)}.phase-strip article:nth-child(2){border-top:4px solid var(--gold)}.phase-strip article:nth-child(3){border-top:4px solid var(--purple)}
.index-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}.index-cloud a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:999px;background:var(--soft)}
.scene-lead{display:grid;grid-template-columns:1fr 300px;gap:18px;align-items:center}.scene-lead .media-slot{height:176px}
.note-columns{columns:2;column-gap:18px}.note-columns article{break-inside:avoid;margin-bottom:16px;background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:16px}
@media(max-width:720px){.phase-strip,.scene-lead{grid-template-columns:1fr}.ribbon-item{grid-template-columns:1fr}.note-columns{columns:1}}