:root{
  --bg:#F6EDE4;--bg-deep:#E8D8C8;--surface:#FFF8F2;--surface-2:#F0E4D6;
  --ink:#1A1612;--text:#2A241C;--muted:#5A5048;--soft:#7A7068;
  --orange:#E07030;--copper:#B06030;--line:rgba(26,22,18,.12);--focus:rgba(224,112,48,.50);
  --shadow:0 12px 28px rgba(26,22,18,.10);--max: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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.skip-link{position:fixed;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--surface);padding:8px 12px;border-radius:4px}.skip-link:focus{top:8px}
.site-header{position:fixed;inset:0 0 auto 0;z-index:50}
.top-strip{height:20px;background:var(--ink);color:var(--bg);font-size:12px}.top-strip-inner,.brand-inner,.quick-inner,.footer-inner{max-width:var(--max);margin:0 auto;padding:0 16px}
.top-strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}
.text-button{border:0;background:transparent;color:var(--bg);font-size:12px;padding:0;min-height:20px}
.brand-bar{height:54px;background:var(--surface);border-bottom:1px solid var(--orange)}
.brand-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo{height:24px;width:auto;object-fit:contain}.brand-fallback{font-weight:800;font-size:16px;color:var(--ink)}
.brand-actions{display:flex;align-items:center;gap:8px}.app-link,.menu-button{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:4px;font-size:14px}.app-link{background:linear-gradient(135deg,#1A1612 0%,#E07030 100%);color:var(--surface)}.menu-button{border:1px solid var(--orange);background:var(--surface);color:var(--ink)}
.quick-strip{height:46px;background:var(--surface);border-bottom:1px solid var(--line)}.quick-inner{height:46px;display:flex;align-items:center;gap:28px}.quick-link{display:inline-flex;align-items:center;gap:8px;font-size:13px;min-height:44px}.quick-box{width:18px;height:18px;border:1px solid var(--ink);border-radius:2px}.quick-link.is-current .quick-box{background:var(--orange);border-color:var(--orange)}
.site-main{padding-top:120px;min-height:60vh}.page-shell{max-width:var(--max);margin:0 auto;padding:34px 16px 72px}.eyebrow{margin:0 0 8px;font-size:13px;color:var(--copper);font-weight:700;letter-spacing:.06em}.page-shell h1{font-size:24px;line-height:1.3;margin:0 0 16px;color:var(--ink)}.page-shell h2{font-size:20px;line-height:1.35;color:var(--ink);margin:0 0 12px}.page-shell h3{font-size:16px;line-height:1.4;color:var(--ink);margin:0 0 8px}.page-shell p{margin:0 0 12px}.lead{font-size:16px;color:var(--muted);max-width:760px}.section{margin-top:34px}.section + .section{margin-top:38px}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:4px;font-size:14px;border:1px solid transparent}.btn-primary{background:linear-gradient(135deg,#1A1612 0%,#E07030 100%);color:var(--surface)}.btn-secondary{background:var(--surface);border-color:var(--orange);color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.btn:hover,.app-link:hover{filter:brightness(.97)}
.media-slot{background:var(--surface-2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.empty{min-height:120px}
.index-markers{display:flex;gap:8px;margin-bottom:14px}.index-markers span{height:28px;min-width:50px;padding:0 10px;background:var(--orange);color:var(--surface);display:inline-flex;align-items:center;justify-content:center;border-radius:3px;font-size:13px;font-weight:700}
.hero-copy{max-width:780px}.hero-copy .statement{font-size:20px;color:var(--ink);font-weight:800;margin:0 0 12px}
.slant-feature{display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:24px;align-items:center;background:var(--surface);padding:18px;border:1px solid var(--line);box-shadow:var(--shadow)}.slant-media{height:176px;clip-path:polygon(0 0,100% 0,91% 100%,0 100%)}.slant-copy{padding:8px 8px 8px 0}
.duo-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.duo-card{background:var(--surface);border:1px solid var(--line);padding:18px;border-radius:4px}.duo-card .media-slot{height:172px;margin-bottom:14px}.duo-card.no-image{background:linear-gradient(145deg,var(--surface),var(--bg-deep))}
.roll-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.roll-card{background:var(--surface);border:1px solid var(--line);padding:20px;border-left:5px solid var(--orange);box-shadow:inset 16px 0 24px rgba(224,112,48,.04)}.roll-card .media-slot{height:170px;margin-bottom:14px}
.shelf-intro{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:stretch}.shelf-head{height:100%;min-height:190px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.shelf-card{background:var(--surface);border:1px solid var(--line);padding:18px}
.period-wrap{display:grid;grid-template-columns:260px 1fr;gap:18px}.period-image{height:200px}.period-list{display:grid;gap:10px}.period-item{background:var(--surface);border:1px solid var(--line);padding:14px 16px}.period-item strong{display:block;color:var(--ink);margin-bottom:4px}
.status-layout{display:grid;grid-template-columns:250px 1fr;gap:18px}.status-image{height:190px}.status-bars{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:100px 1fr;gap:12px;align-items:center}.status-label{font-weight:700;color:var(--ink)}.status-track{height:12px;background:var(--surface-2);border:1px solid var(--line);position:relative}.status-track span{position:absolute;inset:0 auto 0 0;background:var(--orange)}.progress-88{width:88%}.progress-58{width:58%}.progress-34{width:34%}
.app-split{display:grid;grid-template-columns:minmax(180px,300px) 1fr;gap:26px;align-items:start}.app-shot{height:320px}.app-copy .icon-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.app-icon{width:48px;height:48px;border-radius:6px}.notice-box{background:var(--ink);color:var(--surface);padding:18px;border-radius:4px}.notice-box h2,.notice-box h3{color:var(--surface)}
.method-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.method-card{background:var(--surface);border:1px solid var(--line);padding:16px}.faq-mini{display:grid;gap:10px}.faq-mini details{background:var(--surface);border:1px solid var(--line);padding:13px 15px}.faq-mini summary{cursor:pointer;font-weight:700;color:var(--ink)}
.brand-note{background:var(--bg-deep);border:1px solid var(--line);padding:22px}

/* 内页差异布局 */
.two-note-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.note-card{background:var(--surface);border:1px solid var(--line);padding:20px}.note-card.featured .media-slot{height:190px;margin-bottom:14px}.note-card:nth-child(2){transform:translateY(18px)}
.diagonal-list{margin-top:24px;display:grid;gap:14px}.diagonal-row{display:grid;grid-template-columns:240px 1fr;gap:18px;background:var(--surface);border:1px solid var(--line);padding:16px}.diagonal-row:nth-child(even){grid-template-columns:1fr 240px}.diagonal-row:nth-child(even) .media-slot{order:2}.diagonal-row .media-slot{height:150px;clip-path:polygon(0 0,100% 0,92% 100%,0 100%)}
.booklet-stack{margin-top:24px;display:grid;gap:16px}.booklet-page{background:var(--surface);border:1px solid var(--line);border-left:6px solid var(--orange);padding:20px 22px;box-shadow:inset 18px 0 24px rgba(224,112,48,.04)}.booklet-page.with-media{display:grid;grid-template-columns:230px 1fr;gap:20px}.booklet-page .media-slot{height:170px}
.single-column-flow{max-width:760px;margin:24px auto 0}.single-column-flow .media-slot{height:220px;margin-bottom:22px}.flow-step{padding:20px 0;border-bottom:1px solid var(--line)}
.three-periods{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}.period-panel{background:var(--surface);border-top:5px solid var(--orange);padding:18px;border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.period-panel:first-child .media-slot{height:150px;margin-bottom:14px}
.timeline-status{margin-top:24px;display:grid;gap:12px}.timeline-status .media-slot{height:190px;margin-bottom:6px}.timeline-item{display:grid;grid-template-columns:92px 1fr;gap:18px;background:var(--surface);border:1px solid var(--line);padding:16px}.timeline-item span{font-weight:800;color:var(--orange)}
.memo-list{margin-top:24px;background:var(--surface);border:1px solid var(--line)}.memo-lead{display:grid;grid-template-columns:230px 1fr;gap:20px;padding:18px;border-bottom:1px solid var(--line)}.memo-lead .media-slot{height:170px}.memo-row{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:16px 18px;border-bottom:1px dashed var(--line)}.memo-row:last-child{border-bottom:0}.memo-row strong{color:var(--ink)}
.guide-columns{margin-top:24px;column-count:2;column-gap:28px}.guide-block{break-inside:avoid;background:var(--surface);border:1px solid var(--line);padding:18px;margin:0 0 18px}
.topic-list{margin-top:24px;display:grid;gap:12px}.topic-item{display:grid;grid-template-columns:160px 1fr;background:var(--surface);border:1px solid var(--line)}.topic-item strong{background:var(--orange);color:var(--surface);padding:18px;display:flex;align-items:center}.topic-item div{padding:18px}
.center-card-stack{max-width:720px;margin:24px auto 0}.center-hero{height:220px;margin-bottom:18px}.center-card{background:var(--surface);border:1px solid var(--line);padding:20px;margin-bottom:14px;text-align:center}.center-card p{text-align:left}
.install-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:24px}.install-step{background:var(--surface);border:1px solid var(--line);padding:16px}.install-step b{display:inline-flex;width:30px;height:30px;border-radius:50%;align-items:center;justify-content:center;background:var(--orange);color:var(--surface);margin-bottom:10px}
.policy-stack{display:grid;gap:16px;margin-top:24px}.policy-section{background:var(--surface);border-left:4px solid var(--orange);padding:20px}.policy-section:nth-child(even){border-left-color:var(--ink)}
.help-map{display:grid;grid-template-columns:1fr 2fr;gap:18px;margin-top:24px}.help-nav{background:var(--ink);color:var(--surface);padding:18px}.help-nav span{display:block;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15)}.help-content{display:grid;gap:14px}.help-card{background:var(--surface);border:1px solid var(--line);padding:18px}
.faq-list{max-width:820px;margin:24px auto 0;display:grid;gap:12px}.faq-item{background:var(--surface);border:1px solid var(--line);padding:18px}.faq-item h2{font-size:16px;margin-bottom:8px}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}.contact-card{background:var(--surface);border:1px solid var(--line);padding:20px}.contact-guidance{margin-top:18px;background:var(--bg-deep);padding:18px;border:1px solid var(--line)}
.about-banner{height:200px;margin:0 0 22px}.about-manifesto{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.about-main{background:var(--surface);border:1px solid var(--line);padding:22px}.about-side{background:var(--ink);color:var(--surface);padding:22px}.about-side h2{color:var(--surface)}

.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--orange);font-size:13px;padding:34px 0 calc(34px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-logo{height:24px;width:auto;object-fit:contain}.footer-logo-wrap{min-width:34px;display:flex;align-items:center}.footer-brand>div{display:flex;gap:10px;align-items:baseline}.footer-brand strong{font-size:16px}.footer-brand span{color:#d6c8ba}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid h2{font-size:13px;color:var(--bg);margin:0 0 8px}.footer-grid a{display:block;color:#d9cec3;padding:3px 0}.footer-note{max-width:760px;color:#d9cec3;margin:24px 0 8px}.copyright{color:#bdb0a4;margin:0}
.page-overlay{position:fixed;inset:0;background:rgba(26,22,18,.52);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.overlay-open{overflow:hidden}
.menu-card{position:fixed;top:34px;left:50%;transform:translate(-50%,-18px);width:min(320px,88vw);max-height:360px;overflow:auto;background:var(--surface);z-index:80;border:1px solid var(--orange);box-shadow:var(--shadow);padding:14px;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.menu-card.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.menu-head,.search-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.menu-brand{display:flex;align-items:center;gap:8px}.menu-logo{height:24px;width:auto;object-fit:contain}.close-button{border:1px solid var(--line);background:var(--surface);color:var(--ink);height:40px;padding:0 12px;border-radius:4px}.menu-group{padding-top:12px}.menu-group h2{font-size:13px;margin:0 0 6px;color:var(--copper)}.menu-group a{display:grid;grid-template-columns:70px 1fr;gap:8px;padding:7px 0;border-top:1px solid var(--line)}.menu-group a span{font-weight:700;color:var(--ink)}.menu-group a small{color:var(--muted);font-size:12px}
.search-panel{position:fixed;top:74px;left:50%;transform:translateX(-50%) translateY(-10px);width:min(640px,calc(100vw - 32px));z-index:81;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.search-card{background:var(--surface);border:1px solid var(--orange);box-shadow:var(--shadow);padding:18px}.search-head p{margin:2px 0 0;color:var(--muted);font-size:13px}.search-label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}.search-card input{width:100%;height:44px;border:1px solid var(--line);background:#fff;padding:0 12px;color:var(--ink);border-radius:4px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{height:40px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--orange);border-radius:4px}.search-empty{color:var(--soft);font-size:13px;margin-top:12px}.mobile-bottom{display:none}

@media (max-width:760px){
  body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.quick-strip{display:none}.site-main{padding-top:74px}.page-shell{padding:28px 16px 56px}.top-strip-inner,.brand-inner,.footer-inner{padding-left:16px;padding-right:16px}
  .brand-actions{gap:6px}.app-link,.menu-button{padding:0 10px}.slant-feature,.shelf-intro,.period-wrap,.status-layout,.app-split,.booklet-page.with-media,.memo-lead,.about-manifesto,.help-map{grid-template-columns:1fr}.slant-media{max-width:300px;width:100%}.duo-cards,.roll-pair,.shelf-cards,.method-grid,.two-note-layout,.three-periods,.contact-grid{grid-template-columns:1fr}.note-card:nth-child(2){transform:none}.diagonal-row,.diagonal-row:nth-child(even){grid-template-columns:1fr}.diagonal-row:nth-child(even) .media-slot{order:0}.install-steps{grid-template-columns:1fr 1fr}.guide-columns{column-count:1}.topic-item{grid-template-columns:1fr}.topic-item strong{min-height:56px}.footer-grid{grid-template-columns:1fr 1fr}.search-panel{top:0;left:0;transform:none;width:100%;height:100dvh}.search-panel.is-open{transform:none}.search-card{height:100%;background:var(--ink);color:var(--surface);border:0;padding:22px 16px}.search-head strong,.search-head p,.search-label{color:var(--surface)}.search-card .close-button{background:transparent;color:var(--surface);border-color:rgba(255,255,255,.25)}.search-card input{background:#fff}.search-presets a{color:var(--surface);border-color:var(--orange)}.mobile-bottom{position:fixed;z-index:60;display:grid;grid-template-columns:repeat(4,1fr);height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-current{background:var(--orange);color:var(--ink);font-weight:800}.menu-card{top:28px;max-height:calc(100dvh - 80px)}.page-overlay{z-index:70}.menu-card,.search-panel{z-index:80}
}
@media (max-width:460px){.footer-grid{grid-template-columns:1fr}.install-steps{grid-template-columns:1fr}.status-row,.memo-row{grid-template-columns:1fr}.index-markers{flex-wrap:wrap}}

.about-cover-wrap{max-width:520px;margin:0 0 22px}.about-cover{height:240px}