:root{
  --bg:#F3E8D4;--deep:#E2D2B4;--paper:#FBF3E4;--soft:#EDE0C8;--ink:#1A140A;--text:#2C2214;--muted:#5C4A30;--quiet:#7C6844;--gold:#7A5A20;--copper:#B88838;--border:rgba(26,20,10,.12);--border-strong:rgba(122,90,32,.50);--shadow:0 12px 28px rgba(26,20,10,.10);--r:10px;--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;padding-top:116px}.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.skip-link{position:fixed;left:12px;top:-80px;z-index:2000;background:var(--ink);color:var(--paper);padding:10px 14px;border-radius:8px}.skip-link:focus{top:10px}.old-edge{height:20px;position:fixed;inset:0 0 auto;z-index:1000;background:var(--ink);color:var(--copper);font-size:12px}.top-inner{max-width:var(--max);height:20px;margin:auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:var(--copper);min-height:20px;padding:0 6px}.copper-head{height:54px;position:fixed;top:20px;left:0;right:0;z-index:999;background:var(--paper);border-bottom:1px solid var(--border-strong);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - var(--max))/2 + 16px))}.brand-mark{min-width:52px;height:44px;display:flex;align-items:center;font-weight:800;font-size:16px;color:var(--ink)}.brand-mark img,.footer-brand img,.drawer-brand img{height:24px;width:auto;object-fit:contain}.head-actions{display:flex;align-items:center;gap:8px}.app-link,.drawer-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:9px;font-size:14px}.app-link{background:linear-gradient(135deg,#1A140A 0%,#B88838 100%);color:var(--paper)}.drawer-button{background:var(--paper);color:var(--ink);border:1px solid var(--gold)}.copper-dots{height:42px;position:fixed;top:74px;left:0;right:0;z-index:997;background:var(--paper);border-bottom:1px solid var(--border)}.dots-inner{height:100%;max-width:var(--max);margin:auto;display:flex;align-items:center;justify-content:center;gap:56px}.dot-link{height:42px;min-width:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:13px;color:var(--muted)}.dot{width:8px;height:8px;border:1px solid var(--ink);border-radius:50%;background:transparent}.dot-link.is-current .dot{background:var(--copper);border-color:var(--copper)}.dot-link.is-current{color:var(--ink);font-weight:700}.site-main{max-width:var(--max);margin:auto;padding:34px 16px 64px;min-height:60vh}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--ink);margin-bottom:14px}h2{font-size:20px;line-height:1.4;color:var(--ink)}h3{font-size:16px;line-height:1.45;color:var(--ink)}p{margin-bottom:14px}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--gold);margin-bottom:7px}.lead{font-size:17px;color:var(--ink);font-weight:700}.muted{color:var(--muted)}.hero-copy{max-width:760px}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn-primary,.btn-secondary{height:42px;min-width:112px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px}.btn-primary{background:linear-gradient(135deg,#1A140A 0%,#B88838 100%);color:var(--paper)}.btn-secondary{background:var(--paper);border:1px solid var(--gold);color:var(--ink)}a:hover,.text-button:hover{opacity:.82}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(184,136,56,.42);outline-offset:2px}.panel{background:var(--paper);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}.soft-panel{background:var(--soft);border:1px solid var(--border);border-radius:var(--r);padding:20px}.deep-panel{background:var(--ink);color:var(--paper);border-radius:var(--r);padding:22px}.deep-panel h2,.deep-panel h3{color:var(--copper)}.section{margin:34px 0}.section-tight{margin:24px 0}.media-slot{min-height:130px;background:var(--paper);border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.slot-horizontal{height:168px}.slot-square{height:220px}.slot-app{height:300px}.slot-banner{height:200px}.slot-small{height:120px}.home-index{display:flex;gap:18px;flex-wrap:wrap;margin:0 0 24px}.home-index a{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 12px;border-bottom:1px solid var(--border)}.home-index i{width:8px;height:8px;border:1px solid var(--ink);border-radius:50%;display:inline-block}.slice{display:grid;grid-template-rows:auto auto;gap:14px}.triple{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px}.triple article{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:18px}.book-spread{display:grid;grid-template-columns:1fr 1fr;gap:20px;position:relative}.book-spread:after{content:"";position:absolute;top:12px;bottom:12px;left:50%;width:1px;background:var(--border-strong)}.book-page{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:20px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.period-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.period-row article{border-left:3px solid var(--copper);padding:14px 16px;background:var(--paper);border-radius:0 9px 9px 0}.status-stack{display:grid;gap:10px}.status-item{display:grid;grid-template-columns:92px 1fr;align-items:start;gap:14px;padding:14px 16px;background:var(--paper);border:1px solid var(--border);border-radius:9px}.status-label{font-weight:800;color:var(--gold)}.app-visuals{display:grid;grid-template-columns:1fr 72px;gap:14px;align-items:start}.app-visuals .slot-app{grid-column:1}.app-visuals .icon-slot{width:48px;height:48px;justify-self:center}.method-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.method-list article{background:var(--soft);border-radius:10px;padding:18px}.faq-six{display:grid;gap:10px}.faq-six details{background:var(--paper);border:1px solid var(--border);border-radius:9px;padding:13px 16px}.faq-six summary{cursor:pointer;font-weight:700;color:var(--ink)}.brand-story{border-top:1px solid var(--border-strong);padding-top:24px}.page-head{margin-bottom:28px}.page-head p{max-width:780px}.copper-index{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 22px}.copper-index a{min-height:40px;padding:8px 12px;border-radius:999px;background:var(--paper);border:1px solid var(--border-strong)}.horizontal-cuts{display:grid;gap:18px}.horizontal-cut{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:start;padding:18px 0;border-top:1px solid var(--border)}.horizontal-cut strong{color:var(--gold)}.single-notes{display:grid;gap:18px}.single-notes article{padding:0 0 18px;border-bottom:1px solid var(--border)}.memo-list{display:grid;gap:12px}.memo-list article{background:var(--paper);border-left:4px solid var(--copper);border-radius:0 10px 10px 0;padding:18px}.topic-list{display:grid;gap:14px}.topic-row{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:18px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.center-cards{max-width:760px;margin:0 auto;display:grid;gap:16px}.center-cards article{text-align:center;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:22px}.terms{display:grid;gap:18px}.terms section{padding-bottom:18px;border-bottom:1px solid var(--border)}.faq-long{display:grid;gap:12px}.faq-long details{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:15px 18px}.faq-long summary{font-weight:800;color:var(--ink);cursor:pointer}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.contact-grid article{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:20px}.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--copper)}.footer-inner{max-width:var(--max);margin:auto;padding:34px 16px 76px}.footer-brand{display:flex;align-items:center;gap:12px;color:var(--copper);margin-bottom:22px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-groups h2{font-size:15px;color:var(--copper);margin-bottom:9px}.footer-groups a{display:block;font-size:13px;color:var(--bg);padding:5px 0}.footer-note,.copyright{font-size:13px;color:#F3E8D4}.footer-note{border-top:1px solid rgba(184,136,56,.35);padding-top:18px;margin-top:24px}.page-shade{position:fixed;inset:0;z-index:1100;background:rgba(26,20,10,.46);opacity:0;pointer-events:none;transition:opacity .18s}.page-shade.is-visible{opacity:1;pointer-events:auto}.site-drawer{position:fixed;left:18px;bottom:18px;z-index:1200;width:240px;max-height:380px;background:var(--paper);color:var(--text);border:1px solid var(--border-strong);border-radius:12px;box-shadow:0 18px 60px rgba(26,20,10,.28);transform:translateY(calc(100% + 40px));visibility:hidden;pointer-events:none;transition:transform .2s,visibility .2s;overflow:hidden}.site-drawer.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.drawer-top{height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:8px}.icon-button{min-height:44px;padding:0 12px;border:1px solid var(--gold);background:var(--paper);color:var(--ink);border-radius:8px}.drawer-scroll{max-height:322px;overflow:auto;padding:12px}.drawer-group{margin-bottom:14px}.drawer-group h2{font-size:13px;color:var(--gold);margin-bottom:5px}.drawer-group a{display:block;border-top:1px solid var(--border);padding:9px 2px}.drawer-group a strong{display:block;font-size:14px}.drawer-group a span{display:block;color:var(--muted);font-size:12px;line-height:1.5}.search-layer{position:fixed;z-index:1190;top:78px;left:50%;width:min(700px,calc(100% - 32px));transform:translate(-50%,-16px);visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s,transform .18s,visibility .18s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translate(-50%,0)}.search-card{background:var(--paper);border:1px solid var(--border-strong);border-radius:12px;box-shadow:var(--shadow);padding:20px}.search-head{display:flex;justify-content:space-between;gap:16px}.search-head p{color:var(--muted);margin-bottom:8px}.search-label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.search-input{width:100%;height:44px;background:#fffdf7;border:1px solid var(--border-strong);border-radius:9px;color:var(--ink);padding:0 12px}.search-presets{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.search-presets a{min-height:44px;padding:9px 14px;border:1px solid var(--gold);border-radius:999px;display:inline-flex;align-items:center}.search-empty{margin:14px 0 0;color:var(--muted)}.mobile-bottom{display:none}
@media(max-width:760px){body{padding-top:74px;padding-bottom:calc(58px + env(safe-area-inset-bottom))}.copper-dots{display:none}.copper-head{padding:0 16px}.head-actions{gap:5px}.app-link,.drawer-button{padding:0 10px}.site-main{padding:26px 16px 54px}.triple,.period-row,.method-list,.shelf-cards,.contact-grid{grid-template-columns:1fr}.book-spread{grid-template-columns:1fr}.book-spread:after{display:none}.horizontal-cut,.topic-row{grid-template-columns:1fr}.app-visuals{grid-template-columns:1fr 92px}.slot-app{height:280px}.site-drawer{left:6%;bottom:calc(58px + env(safe-area-inset-bottom));width:88%;max-height:380px}.search-layer{inset:0;top:0;width:100%;height:100%;transform:none;background:var(--ink);padding:22px 16px;overflow:auto}.search-layer.is-open{transform:none}.search-card{min-height:100%;background:var(--ink);color:var(--copper);border:0;box-shadow:none}.search-head strong,.search-label{color:var(--copper)}.search-head p{color:var(--bg)}.search-card .icon-button{background:var(--paper)}.search-presets a{color:var(--paper);border-color:var(--copper)}.search-empty{color:var(--bg)}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;z-index:1005;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--border-strong)}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-current{background:var(--copper);color:var(--ink);font-weight:800}.footer-inner{padding-bottom:82px}.footer-groups{grid-template-columns:1fr 1fr;gap:16px 22px}.slot-banner{height:200px}}
@media(max-width:420px){.head-actions .app-link{padding:0 8px}.head-actions .drawer-button{padding:0 9px}.top-inner{padding:0 12px}.app-visuals{grid-template-columns:1fr}.app-visuals .icon-slot{width:96px}.footer-groups{grid-template-columns:1fr 1fr}}

/* Page-specific layout distinctions */
.page-grade .terms{grid-template-columns:1fr 1fr;gap:16px}.page-grade .terms>section{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:18px}.page-privacy .terms>section:nth-child(even){margin-left:9%;background:var(--soft);padding:18px;border-radius:10px}.page-banquan .terms>section{padding-left:18px;border-left:3px solid var(--copper);border-bottom:0}.page-help .topic-row:nth-child(even){grid-template-columns:1fr 150px}.page-help .topic-row:nth-child(even)>strong{order:2;text-align:right}.page-jiuzhuan .topic-row{grid-template-columns:130px 1fr}.page-contact .contact-grid article:nth-child(2),.page-contact .contact-grid article:nth-child(3){transform:translateY(12px)}
@media(max-width:760px){.page-grade .terms{grid-template-columns:1fr}.page-privacy .terms>section:nth-child(even){margin-left:0}.page-help .topic-row:nth-child(even),.page-jiuzhuan .topic-row{grid-template-columns:1fr}.page-help .topic-row:nth-child(even)>strong{order:0;text-align:left}.page-contact .contact-grid article:nth-child(2),.page-contact .contact-grid article:nth-child(3){transform:none}}

/* v2 layout refinement */
.page-index .hero-copy{padding-bottom:8px}.page-index .home-index a{background:var(--paper);border:1px solid var(--border);border-radius:999px;padding:0 14px}.page-index .home-index i{background:var(--copper);border-color:var(--copper)}
.page-jiuji .triple article:nth-child(2){transform:translateY(12px)}.page-jiuji .triple article:nth-child(3){transform:translateY(24px)}
.page-jiumian .horizontal-cut:nth-child(even){grid-template-columns:1fr 180px}.page-jiumian .horizontal-cut:nth-child(even)>strong{order:2;text-align:right}
.page-jiubei .memo-list article:nth-child(even){margin-left:5%}.page-kanjiu .method-list article:nth-child(1),.page-kanjiu .method-list article:nth-child(4){background:var(--paper);border:1px solid var(--border)}
@media(max-width:760px){.page-jiuji .triple article:nth-child(2),.page-jiuji .triple article:nth-child(3){transform:none}.page-jiumian .horizontal-cut:nth-child(even){grid-template-columns:1fr}.page-jiumian .horizontal-cut:nth-child(even)>strong{order:0;text-align:left}.page-jiubei .memo-list article:nth-child(even){margin-left:0}}