:root{--bg:#F4F1F8;--deep:#E4DEEC;--paper:#FBF8FF;--soft:#EEE8F4;--ink:#161418;--text:#2A242C;--muted:#5A5460;--fade:#7A7480;--blue:#4A8AB8;--rose:#C46A8A;--green:#6A9A48;--gold:#C4A04A;--violet:#6A4A9A;--border:rgba(22,20,24,.12);--shadow:0 12px 28px rgba(22,20,24,.08);--radius:12px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(960px,calc(100% - 32px));margin:0 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article,.directory-call,.phase-section,.progress-panel,.topic-list,.app-home,.method-grid,.home-faq,.brand-home,.content-block,.next-path,.faq-list details{background:var(--paper);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:var(--radius)}.home-intro{padding:34px;margin-bottom:24px}.mini-index{display:flex;gap:10px;margin-bottom:20px}.mini-index a{display:inline-flex;align-items:center;gap:7px;font-size:13px}.mini-index .dot{width:18px;height:18px;border:2px solid var(--blue);border-radius:50%}.kicker,.label{font-size:12px;color:var(--violet);font-weight:700;letter-spacing:.08em}.home-intro h1,.page-hero h1{font-size:24px;line-height:1.3;margin:8px 0 10px;color:var(--ink)}h2{font-size:20px;line-height:1.4;color:var(--ink)}h3{font-size:16px;color:var(--ink)}.lead{font-size:17px;color:var(--ink);font-weight:700}.intro-copy{max-width:760px}.btn{min-height:42px;padding:0 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var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}.round-media img{width:100%;height:100%;object-fit:contain;object-position:center}.color-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}.color-pair article{padding:22px}.color-pair article:first-child{border-top:4px solid var(--rose)}.color-pair article:last-child{border-top:4px solid var(--blue)}.media-slot,.page-media,.about-banner,.app-media-page{background:var(--paper);border:1px dashed rgba(106,74,154,.24);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot{height:168px;margin-bottom:16px}.media-slot.wide{height:160px}.media-slot img,.page-media img,.about-banner img,.app-media-page img,.app-media img,.app-icon img{width:100%;height:100%;object-fit:contain;object-position:center}.page-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}.page-cards 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var(--border);overflow:hidden}.app-icon{display:grid;grid-template-columns:48px 1fr;grid-template-rows:auto auto;gap:0 10px;align-items:center}.app-icon img{width:48px;height:48px;grid-row:1/3}.app-icon span{font-size:13px;color:var(--muted)}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.method-grid>.label,.method-grid>h2,.method-grid>.text-link{grid-column:1/-1}.method-grid article{background:var(--soft);padding:16px;border-radius:12px}.home-faq details,.faq-list details{padding:14px 0;border-top:1px solid var(--border)}.home-faq details{box-shadow:none;border-radius:0;background:transparent;border-left:0;border-right:0;border-bottom:0}.home-faq summary,.faq-list summary{cursor:pointer;font-weight:700;color:var(--ink)}.page-hero{padding:26px;margin-bottom:22px;display:grid;grid-template-columns:1.25fr 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p{margin:0;color:var(--muted)}.search-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.search-links a{min-height:44px;border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center}.locked{overflow:hidden}.mobile-dock{display:none}
@media(max-width:720px){.wrap{width:calc(100% - 32px)}.pin-nav{display:none}.site-main{padding-top:88px;padding-bottom:80px}.round-feature,.directory-call,.progress-panel,.app-home,.page-hero{grid-template-columns:1fr}.round-media{width:240px;margin:0 auto}.color-pair,.page-cards,.method-grid,.content-layout.cards{grid-template-columns:1fr}.phase-list{grid-template-columns:1fr}.app-media-page{justify-self:center}.content-layout.split .content-block:nth-child(even){margin-left:0}.footer-grid{grid-template-columns:1fr 1fr}.menu-sheet{max-height:64%;padding:16px}.sheet-grid{grid-template-columns:1fr 1fr;max-height:calc(64vh - 80px)}.search-sheet{inset:0;width:auto;transform:none;background:var(--ink);padding:24px 16px;opacity:0}.search-sheet.open{transform:none}.search-card{min-height:100%;background:var(--ink);color:var(--gold);box-shadow:none}.search-card .sheet-head button{background:var(--ink);color:var(--gold);border-color:var(--gold)}.search-links{grid-template-columns:1fr 1fr}.search-links a{border-color:rgba(196,160,74,.4)}.mobile-dock{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:35;left:0;right:0;bottom:0;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--border)}.mobile-dock a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-dock a.is-current{background:var(--violet);color:var(--paper);box-shadow:0 6px 16px rgba(106,74,154,.18)}.top-actions{gap:4px}.app-link,.menu-btn{padding:0 10px}.footer-body{padding-bottom:90px}.topic-list>a{grid-template-columns:1fr}.home-intro{padding:24px}.app-home{grid-template-columns:1fr}}

/* v5 visual refresh */
.fresh-intro{position:relative;overflow:hidden}.fresh-intro:after{content:"";position:absolute;right:-70px;top:34px;width:150px;height:150px;border-radius:50%;border:22px solid rgba(106,74,154,.06);pointer-events:none}.page-hero{border-top:3px solid rgba(74,138,184,.22)}.content-block:nth-child(4n+1){border-left:3px solid rgba(74,138,184,.22)}.content-block:nth-child(4n+2){border-left:3px solid rgba(196,106,138,.22)}.content-block:nth-child(4n+3){border-left:3px solid rgba(106,154,72,.22)}.content-block:nth-child(4n){border-left:3px solid rgba(196,160,74,.24)}