:root{
  --bg:#E8F4F0;--bg-deep:#C8E4DC;--surface:#F4FAF8;--surface-2:#DCEEE8;
  --title:#16382E;--text:#245044;--muted:#4A7468;--soft:#6A9488;
  --green:#2A8A72;--green-2:#3AA88A;--gold:#C4A050;--white:#F4FAF8;
  --border:rgba(22,56,46,.12);--border-strong:rgba(42,138,114,.48);
  --shadow:0 12px 28px rgba(22,56,46,.08);--max:960px;
}
*{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","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:122px}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
img{max-width:100%;display:block;object-fit:contain;object-position:center}
.skip-link{position:fixed;left:12px;top:-60px;z-index:100;background:var(--title);color:var(--white);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}
.site-top{position:fixed;z-index:40;top:0;left:0;right:0;box-shadow:0 4px 16px rgba(22,56,46,.06)}
.teal-edge{height:20px;background:var(--green);color:var(--white);font-size:12px;line-height:20px}.top-inner,.head-inner,.dot-nav-inner,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}.top-inner{display:flex;justify-content:space-between;align-items:center;height:20px}.text-button{border:0;background:transparent;color:var(--white);padding:0 2px;cursor:pointer;font-size:12px;text-decoration:underline;text-underline-offset:2px}
.brand-head{height:54px;background:var(--surface);border-bottom:1px solid var(--border-strong)}.head-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-link{display:inline-flex;align-items:center;min-height:44px}.brand-logo{height:24px;width:auto}.brand-fallback{font-size:16px;font-weight:800;color:var(--title);letter-spacing:.03em}.head-actions{display:flex;align-items:center;gap:8px}.head-app,.menu-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px}.head-app{padding:0 14px;border:1px solid var(--border-strong);background:var(--surface);color:var(--title);font-size:14px;font-weight:700}.menu-button{gap:6px;padding:0 12px;border:0;background:linear-gradient(135deg,var(--green),var(--green-2));color:var(--white);font-weight:700;cursor:pointer}
.dot-nav{height:48px;background:var(--surface);border-bottom:1px solid var(--border)}.dot-nav-inner{height:48px;display:flex;align-items:center;justify-content:center;gap:54px}.dot-item{min-height:44px;min-width:58px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:13px;color:var(--muted);position:relative}.dot-item .dot{width:10px;height:10px;border:2px solid var(--green);border-radius:50%;background:var(--surface);transition:.2s}.dot-item.dot-raised{transform:translateY(-4px)}.dot-item.is-current{font-weight:800;color:var(--title)}.dot-item.is-current .dot{width:14px;height:14px;background:var(--green)}
.site-main{min-height:60vh}.section,.page-intro,.page-section{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:44px 0}.page-intro{padding-bottom:22px}.page-intro .eyebrow,.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--gold);border-radius:9px}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--title);margin-bottom:14px}h2{font-size:20px;line-height:1.4;color:var(--title);margin-bottom:12px}h3{font-size:16px;line-height:1.45;color:var(--title);margin-bottom:8px}p{margin-bottom:14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.muted{color:var(--muted)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.btn{min-height:42px;padding:0 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-2));color:var(--white)}.btn-secondary{background:var(--surface);border:1px solid var(--green);color:var(--title)}a:hover{opacity:.9}a:focus-visible,button:focus-visible{outline:3px solid rgba(196,160,80,.55);outline-offset:3px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.soft-card{background:var(--surface-2);border:1px solid var(--border);border-radius:12px}.image-slot{display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;min-height:120px}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.intro-dots{display:flex;align-items:flex-end;gap:22px;margin-bottom:22px}.intro-dots a{display:flex;flex-direction:column;align-items:center;gap:5px;color:var(--muted);font-size:12px}.intro-dots i{width:10px;height:10px;border:2px solid var(--green);border-radius:50%;display:block;background:var(--surface)}.intro-dots a:nth-child(3){transform:translateY(-4px)}
.home-mouth{padding-top:36px}.home-mouth .lead{max-width:720px}.split-strip{display:grid;grid-template-columns:1fr 1fr;background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}.split-strip>div{padding:28px}.split-strip>div+div{border-left:1px solid var(--border)}.strip-image{height:164px;margin-bottom:16px}.vertical-list{display:grid;gap:14px;position:relative}.vertical-item{display:grid;grid-template-columns:80px 1fr;gap:18px;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:12px}.vertical-num{font-weight:800;color:var(--green);font-size:13px}.vertical-img{grid-column:2;height:180px;margin-top:4px}.clip-pair{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}.clip-card{padding:24px;min-height:220px}.clip-card:first-child{transform:translateY(8px)}.clip-image{height:180px;margin-bottom:16px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.shelf-card{padding:24px}.shelf-head-image{height:160px;margin:0 0 14px}.periods{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.period{padding:22px;border-top:4px solid var(--green)}.status-list{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;padding:18px 20px;background:var(--surface);border:1px solid var(--border);border-radius:12px}.status-chip{padding:5px 10px;border-radius:999px;background:var(--surface-2);font-size:12px;font-weight:800;color:var(--green);white-space:nowrap}.app-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:center}.app-visual{max-height:320px;min-height:260px}.app-visual img{max-height:320px}.icon-inline{display:flex;align-items:center;gap:12px;margin-bottom:12px}.icon-inline img{width:48px;height:48px}.points-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.point{padding:20px}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini article{padding:18px}.brand-block{padding:26px;background:var(--title);color:var(--white);border-radius:14px}.brand-block h2,.brand-block h3{color:var(--white)}
.record-list{display:grid;gap:16px}.record{display:grid;grid-template-columns:110px 1fr;gap:22px;padding:24px;border-left:4px solid var(--green);background:var(--surface);border-radius:0 12px 12px 0}.record-tag{color:var(--green);font-weight:800}.record-image{height:220px;margin-top:16px}.open-strips{display:grid;gap:14px}.open-strip{display:grid;grid-template-columns:.95fr 1.05fr;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}.open-strip:nth-child(even){grid-template-columns:1.08fr .92fr}.open-strip>div{padding:24px}.open-strip .aside{background:var(--surface-2)}.open-strip-image{height:220px}.book-pages{display:grid;grid-template-columns:1fr 1fr;gap:18px}.book-page{padding:26px;position:relative}.book-page:before{content:"";position:absolute;top:18px;bottom:18px;width:3px;background:var(--gold);opacity:.55}.book-page:nth-child(odd):before{right:-11px}.book-page:nth-child(even):before{left:-11px}.book-image{height:210px;margin-bottom:16px}.single-flow{display:grid;gap:16px}.single-flow article{padding:24px}.single-flow article:nth-child(2n){background:var(--surface-2)}.timeline-third{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.timeline-third article{padding:24px}.timeline-third article:nth-child(2){transform:translateY(18px)}.memo-list{display:grid;gap:12px}.memo-item{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:20px}.memo-mark{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--green);color:var(--white);font-weight:800}.method-list{display:grid;gap:18px}.method-row{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:24px}.topic-list{display:grid;gap:14px}.topic-item{display:grid;grid-template-columns:160px 1fr;gap:22px;padding:22px}.center-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.center-card{text-align:center;padding:28px}.center-card p{text-align:left}.terms{display:grid;gap:14px}.term{padding:24px}.term h2{display:flex;gap:10px;align-items:center}.term h2:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green);flex:none}.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.help-item{padding:22px}.qa-list{display:grid;gap:12px}.qa{padding:22px}.qa h2{font-size:16px}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-card{padding:24px}.about-banner{height:200px;margin:0 auto 22px;width:min(var(--max),calc(100% - 32px))}.about-banner img{width:100%;height:100%}.about-brand-image{height:220px;margin-top:18px}
.search-layer{position:fixed;z-index:55;top:74px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.18s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(620px,calc(100% - 32px));margin:10px auto 0;padding:20px;background:var(--surface);border:1px solid var(--border-strong);border-radius:12px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;gap:18px}.search-head p{margin:2px 0 0;color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-presets a{min-height:40px;padding:0 14px;border:1px solid var(--border);border-radius:9px;display:inline-flex;align-items:center;background:var(--bg)}.close-button{min-height:40px;padding:0 12px;border:1px solid var(--border-strong);background:var(--surface);border-radius:9px;cursor:pointer;color:var(--title)}
.site-overlay{position:fixed;z-index:50;inset:0;background:rgba(8,26,21,.38);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.site-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.site-drawer{position:fixed;z-index:60;left:0;top:20px;width:36vw;min-width:320px;max-width:420px;max-height:88vh;overflow-y:auto;background:var(--surface);border:1px solid var(--border-strong);border-left:0;border-radius:0 14px 14px 0;box-shadow:var(--shadow);transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:.22s;padding:18px}.site-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-logo{height:24px;width:auto}.drawer-brand span{display:flex;flex-direction:column;line-height:1.2}.drawer-brand small{color:var(--muted);font-size:11px}.drawer-groups section{padding:14px 0;border-bottom:1px solid var(--border)}.drawer-groups section:last-child{border-bottom:0}.drawer-groups h2{font-size:13px;color:var(--green);margin:0 0 7px}.drawer-groups a{display:flex;align-items:baseline;gap:10px;min-height:42px;padding:7px 6px;border-radius:8px}.drawer-groups a:hover{background:var(--surface-2)}.drawer-groups b{min-width:74px;color:var(--title)}.drawer-groups span{font-size:12px;color:var(--muted)}.ui-locked{overflow:hidden}
.site-footer{background:var(--title);color:var(--white);border-top:1px solid rgba(244,250,248,.3);padding:34px 0 30px}.footer-brand{display:flex;align-items:center;gap:10px;padding-bottom:20px;border-bottom:1px solid rgba(244,250,248,.16)}.footer-logo{height:24px;width:auto}.footer-brand div{display:flex;gap:9px;align-items:baseline}.footer-brand span{font-size:12px;opacity:.8}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:22px 0}.footer-links h2{font-size:13px;color:var(--white);margin-bottom:8px}.footer-links a{display:block;color:var(--white);opacity:.86;font-size:13px;padding:2px 0}.footer-note,.footer-copy{font-size:13px;color:var(--white);opacity:.82}.footer-copy{margin-bottom:0}.mobile-bottom{display:none}
@media (max-width:760px){
  body{padding-top:74px;padding-bottom:calc(48px + env(safe-area-inset-bottom))}.dot-nav{display:none}.top-inner,.head-inner,.footer-inner{width:calc(100% - 32px)}.site-main{overflow:hidden}.head-app{padding:0 10px}.menu-button{padding:0 10px}.section,.page-intro,.page-section{padding:34px 0}.home-mouth{padding-top:28px}.intro-dots{gap:16px;overflow-x:auto;padding-bottom:4px}.split-strip,.clip-pair,.shelf-cards,.app-layout,.points-list,.faq-mini,.book-pages,.timeline-third,.center-cards,.help-grid,.contact-grid{grid-template-columns:1fr}.split-strip>div+div{border-left:0;border-top:1px solid var(--border)}.vertical-item,.record,.status-row,.method-row,.topic-item,.open-strip,.open-strip:nth-child(even){grid-template-columns:1fr}.vertical-img{grid-column:auto}.clip-card:first-child,.timeline-third article:nth-child(2){transform:none}.periods{grid-template-columns:1fr}.status-row{gap:8px}.status-chip{justify-self:start}.open-strip .aside{border-top:1px solid var(--border)}.book-page:before{display:none}.method-row,.topic-item{gap:10px}.about-banner{height:200px}.search-layer{top:20px;bottom:0;background:var(--green)}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;background:var(--green);color:var(--white);padding:86px 20px 20px}.search-head strong,.search-head p{color:var(--white)}.search-presets a,.search-card .close-button{background:var(--surface);color:var(--title);border-color:rgba(244,250,248,.55)}.site-drawer{top:20px;width:min(86vw,360px);min-width:0;max-height:88vh}.footer-links{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:72px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:45;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--surface);border-top:1px solid var(--border-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;min-height:48px}.mobile-bottom a.is-current{background:var(--green);color:var(--white);font-weight:800}
}
@media (max-width:420px){.footer-links{grid-template-columns:1fr 1fr}.head-actions{gap:6px}.menu-button span:last-child{display:none}.intro-dots{justify-content:space-between;gap:8px}.strip-image,.vertical-img,.clip-image,.open-strip-image,.book-image{height:170px}.app-visual{min-height:220px}.section,.page-intro,.page-section{width:calc(100% - 32px)}}