:root{
  --bg:#F6EDE4;--bg-deep:#E8D8C8;--paper:#FFF8F2;--soft:#F0E4D6;--ink:#1A1612;--text:#2A241C;--muted:#5A5048;--sub:#7A7068;--orange:#E07030;--copper:#B06030;--line:rgba(26,22,18,.12);--hotline:rgba(224,112,48,.50);--shadow:0 12px 28px rgba(26,22,18,.10)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--hotline);outline-offset:2px}
body.is-locked{overflow:hidden}
.top-accent{position:fixed;top:0;left:0;right:0;height:20px;background:var(--ink);color:var(--bg);z-index:80;font-size:12px}
.top-accent-inner,.header-inner,.quick-nav-inner,.footer-inner{max-width:960px;margin:0 auto}
.top-accent-inner{height:20px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}
.brand-mini{font-weight:700;letter-spacing:.05em}
.text-action{border:0;background:transparent;color:var(--bg);padding:0;min-height:20px}
.site-header{position:fixed;top:20px;left:0;right:0;height:54px;background:var(--paper);border-bottom:1px solid var(--orange);z-index:79}
.header-inner{height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}
.brand-link{min-width:44px;min-height:44px;display:inline-flex;align-items:center}
.brand-logo,.footer-logo,.menu-logo{display:block;height:24px;width:auto;max-width:124px;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:800;color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:8px}
.app-entry,.menu-trigger{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border-radius:4px}
.app-entry{background:linear-gradient(135deg,var(--ink) 0%,var(--orange) 100%);color:var(--paper);font-size:14px}
.menu-trigger{border:1px solid var(--orange);background:var(--paper);color:var(--ink)}
.quick-nav{position:fixed;top:74px;left:0;right:0;height:46px;background:var(--paper);z-index:76;border-bottom:1px solid var(--line)}
.quick-nav-inner{height:46px;display:flex;align-items:center;gap:22px;padding:0 16px}
.quick-item{display:flex;align-items:center;gap:8px;font-size:13px;min-height:44px;color:var(--ink)}
.quick-square{width:18px;height:18px;border:1px solid var(--ink);border-radius:2px;background:transparent}
.quick-item.is-active .quick-square{background:var(--orange);border-color:var(--orange)}
.site-main{min-height:60vh;padding-top:120px}
.container{max-width:960px;margin:0 auto;padding:0 16px}
.section{padding:40px 0}
.section-tight{padding:28px 0}
.eyebrow{font-size:13px;color:var(--copper);font-weight:700;letter-spacing:.08em}
h1,h2,h3{color:var(--ink);margin:0 0 14px}
h1{font-size:24px;line-height:1.3}
h2{font-size:20px;line-height:1.35}
h3{font-size:16px;line-height:1.45}
p,li{font-size:15px;line-height:1.7}
p{margin:0 0 14px}
.lead{font-size:16px;color:var(--muted);max-width:760px}
.muted{color:var(--muted)}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}
.section-heading p{margin:0;max-width:560px;color:var(--muted)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.btn-primary,.btn-secondary{height:42px;padding:0 16px;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--ink) 0%,var(--orange) 100%);color:var(--paper)}
.btn-secondary{background:var(--paper);border:1px solid var(--orange);color:var(--ink)}
.btn-primary:hover,.app-entry:hover{filter:brightness(1.05)}
.btn-secondary:hover{background:var(--soft)}
.media-slot{background:var(--paper);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
.media-slot.empty::after{content:"影像位置";font-size:12px;color:var(--sub);letter-spacing:.08em}
.index-intro{padding:38px 0 30px}
.intro-indexes{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.intro-indexes a{width:92px;min-height:44px;background:var(--orange);color:var(--paper);display:flex;align-items:center;justify-content:center;border-radius:4px;font-size:13px}
.hero-sentence{font-size:20px;color:var(--copper);font-weight:700;margin:8px 0 12px}
.slant-record{display:grid;grid-template-columns:minmax(220px,300px) 1fr;gap:24px;align-items:stretch;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);padding:18px;clip-path:polygon(0 0,100% 0,96% 100%,0 100%)}
.slant-record .media-slot{height:176px;background:var(--paper)}
.double-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.story-card{background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:18px}
.story-card .media-slot{height:190px;margin-bottom:16px}
.page-scrolls{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.page-sheet{background:var(--paper);border:1px solid var(--line);padding:20px;position:relative;min-height:260px}
.page-sheet::after{content:"";position:absolute;right:14px;top:14px;width:42px;height:3px;background:var(--orange)}
.page-sheet .media-slot{height:180px;margin-bottom:14px}
.rack-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.rack-card{background:var(--soft);border-left:4px solid var(--orange);padding:18px}
.rack-card .media-slot{height:180px;margin-bottom:14px}
.phase-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.phase-item{background:var(--paper);border-top:4px solid var(--orange);padding:16px;min-height:170px}
.phase-item strong{display:block;color:var(--copper);margin-bottom:8px}
.phase-image{height:220px;margin-bottom:18px}
.status-list{display:grid;gap:10px}
.status-row{display:grid;grid-template-columns:140px 1fr auto;gap:14px;align-items:center;background:var(--paper);border:1px solid var(--line);padding:14px 16px}
.status-badge{font-size:13px;border:1px solid var(--orange);padding:6px 10px;border-radius:999px;color:var(--ink);background:var(--bg)}
.split-feature{display:grid;grid-template-columns:minmax(220px,330px) 1fr;gap:28px;align-items:center}
.split-feature .media-slot{height:320px}
.icon-mini{width:48px;height:48px;border-radius:6px;margin-bottom:12px}
.tips-list{display:grid;gap:12px}
.tip-row{background:var(--paper);border:1px solid var(--line);padding:16px 18px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-mini{background:var(--paper);border:1px solid var(--line);padding:14px}
.brand-block{background:var(--ink);color:var(--paper);padding:22px;border-left:5px solid var(--orange)}
.brand-block h2,.brand-block h3{color:var(--paper)}
.page-head{padding:34px 0 20px}
.page-head .lead{max-width:800px}
.inner-double{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inner-double article{background:var(--paper);border:1px solid var(--line);padding:18px}
.inner-double .media-slot{height:220px;margin-bottom:16px}
.slant-list{display:grid;gap:16px}
.slant-item{display:grid;grid-template-columns:180px 1fr;gap:20px;background:var(--paper);border:1px solid var(--line);padding:16px;clip-path:polygon(0 0,100% 0,98% 100%,2% 100%)}
.slant-item .media-slot{height:150px}
.scroll-layout{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.scroll-layout article{background:var(--paper);border:1px solid var(--line);padding:20px;min-height:240px}
.single-column{max-width:760px;margin:0 auto}
.single-column article{padding:22px 0;border-bottom:1px solid var(--line)}
.single-column .media-slot{height:240px;margin:18px 0}
.three-periods{display:grid;gap:16px}
.period{display:grid;grid-template-columns:140px 1fr;gap:18px;background:var(--paper);border-left:5px solid var(--orange);padding:18px}
.period-label{font-size:20px;color:var(--copper);font-weight:800}
.memo-list{display:grid;gap:14px}
.memo-item{display:grid;grid-template-columns:44px 1fr;gap:14px;background:var(--paper);border:1px solid var(--line);padding:16px}
.memo-no{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);font-weight:800;border-radius:4px}
.method-flow{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.method-step{background:var(--paper);border:1px solid var(--line);padding:18px}
.topic-list{display:grid;gap:12px}
.topic-row{display:grid;grid-template-columns:160px 1fr;gap:18px;border-bottom:1px solid var(--line);padding:18px 0}
.center-cards{max-width:760px;margin:0 auto;display:grid;gap:16px}
.center-card{background:var(--paper);border:1px solid var(--line);padding:22px;text-align:center}
.center-card .media-slot{height:220px;margin-bottom:16px}
.legal-sections{display:grid;gap:16px}
.space-top{margin-top:22px}
.legal-box{background:var(--paper);border:1px solid var(--line);padding:20px}
.help-directory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.help-card{background:var(--paper);border-top:4px solid var(--orange);padding:18px}
.faq-page{display:grid;gap:12px}
.faq-item{background:var(--paper);border:1px solid var(--line);padding:18px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-card{background:var(--paper);border:1px solid var(--line);padding:20px}
.about-banner{height:200px;margin:12px 0 24px}
.about-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about-columns article{background:var(--paper);padding:18px;border:1px solid var(--line)}
.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--orange);padding:34px 0 78px;margin-top:42px}
.footer-inner{padding:0 16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:24px}
.footer-brand strong{font-size:16px}.footer-brand span{font-size:13px;color:var(--bg)}
.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.footer-groups h2{font-size:13px;color:var(--paper);margin-bottom:10px}
.footer-groups a{display:block;font-size:13px;line-height:1.9;color:var(--bg)}
.footer-note,.copyright{font-size:13px;color:var(--bg)}
.footer-note{margin-top:22px;border-top:1px solid rgba(255,255,255,.14);padding-top:18px}
.copyright{margin-bottom:0}
.page-overlay{position:fixed;inset:0;background:rgba(26,22,18,.58);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}
.menu-panel{position:fixed;top:34px;left:50%;transform:translate(-50%,-18px);width:320px;max-height:360px;background:var(--paper);z-index:95;box-shadow:var(--shadow);border:1px solid var(--hotline);border-radius:6px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease;display:flex;flex-direction:column}
.menu-panel.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}
.menu-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line)}
.menu-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--ink)}
.panel-close{min-width:44px;min-height:44px;border:1px solid var(--orange);background:var(--paper);color:var(--ink);border-radius:4px}
.menu-scroll{overflow:auto;padding:8px 14px 14px}
.menu-group{padding:8px 0;border-bottom:1px solid var(--line)}
.menu-group:last-child{border-bottom:0}.menu-group h2{font-size:13px;margin:0 0 6px;color:var(--copper)}
.menu-group a{display:block;padding:7px 0}.menu-group strong{font-size:14px;display:inline-block;min-width:66px}.menu-group span{font-size:12px;color:var(--muted)}
.search-panel{position:fixed;top:74px;left:50%;transform:translateX(-50%);width:min(720px,calc(100% - 32px));background:var(--paper);z-index:96;border:1px solid var(--hotline);box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto}
.search-inner{padding:0 16px 18px}.search-head{padding-left:0;padding-right:0}.search-inner label{display:block;font-size:14px;margin:14px 0 8px;color:var(--muted)}
.search-inner input{width:100%;height:44px;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:0 12px;border-radius:4px}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{min-height:44px;padding:0 14px;display:flex;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:4px}
.mobile-bar{display:none}
@media (max-width:760px){
  .quick-nav{display:none}.site-main{padding-top:74px}.header-inner{padding-left:16px;padding-right:10px}.header-actions{gap:6px}.app-entry,.menu-trigger{padding:0 10px}
  .section{padding:30px 0}.section-heading{display:block}.section-heading p{margin-top:4px}
  .slant-record,.split-feature,.slant-item,.period,.topic-row{grid-template-columns:1fr}.slant-record{clip-path:none}.slant-record .media-slot{height:176px}
  .double-cards,.page-scrolls,.rack-cards,.inner-double,.scroll-layout,.method-flow,.help-directory,.contact-grid,.about-columns,.faq-grid{grid-template-columns:1fr}
  .phase-strip{grid-template-columns:1fr}.status-row{grid-template-columns:1fr;gap:8px}.status-badge{justify-self:start}.split-feature .media-slot{height:300px}.slant-item{clip-path:none}
  .footer-groups{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:94px}
  .menu-panel{width:88%;max-height:360px}.search-panel{top:0;left:0;transform:none;width:100%;height:100%;background:var(--ink);color:var(--paper);border:0}.search-panel .search-inner{max-width:560px;margin:0 auto;padding:24px 16px}.search-panel .search-head{border-bottom-color:rgba(255,255,255,.18)}.search-panel .search-head strong,.search-panel label{color:var(--paper)}.search-panel .panel-close{background:transparent;color:var(--paper)}.search-panel input{background:var(--paper);color:var(--ink)}.search-presets a{background:var(--paper);color:var(--ink)}
  .mobile-bar{position:fixed;left:0;right:0;bottom:0;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(--ink);z-index:78}.mobile-bar a{height:48px;display:flex;align-items:center;justify-content:center;color:var(--paper);font-size:13px;border-top:1px solid rgba(255,255,255,.12)}.mobile-bar a.is-active{background:var(--orange);color:var(--ink);font-weight:800}
}
@media (max-width:430px){.footer-groups{grid-template-columns:1fr 1fr;gap:14px}.intro-indexes a{flex:1;min-width:88px}.page-head{padding-top:28px}}