:root{
  --bg:#E8F4F0;--deep:#C8E4DC;--paper:#F4FAF8;--soft:#DCEEE8;--ink:#16382E;
  --text:#245044;--muted:#4A7468;--aux:#6A9488;--green:#2A8A72;--green2:#3AA88A;
  --gold:#C4A050;--line:rgba(22,56,46,.12);--line-strong:rgba(42,138,114,.48);
  --shadow:0 12px 28px rgba(22,56,46,.08);--max:960px;--r:12px;
}
*{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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:74px}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%;object-fit:contain;object-position:center}
.top-strip{position:fixed;z-index:1000;left:0;right:0;top:0;height:20px;background:var(--green);color:var(--paper);font-size:12px}
.top-strip-inner,.brand-bar-inner{max-width:var(--max);margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;height:100%}
.text-button{border:0;background:transparent;color:inherit;min-height:20px;padding:0 4px}
.brand-bar{position:fixed;z-index:999;left:0;right:0;top:20px;height:54px;background:var(--paper);border-bottom:1px solid var(--line-strong)}
.brand-link,.drawer-brand,.footer-logo-link{display:flex;align-items:center;min-height:44px}
.brand-logo,.footer-logo{height:24px;width:auto;max-width:138px;object-fit:contain}
.brand-fallback{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:.04em}
.brand-actions{display:flex;align-items:center;gap:8px}
.app-link,.menu-button,.btn{height:44px;min-width:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;font-size:14px;white-space:nowrap}
.app-link{border:1px solid var(--green);background:var(--paper);color:var(--ink)}
.menu-button{border:0;background:linear-gradient(135deg,var(--green),var(--green2));color:var(--paper)}
.dot-nav{height:48px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;justify-content:center;align-items:center;gap:44px;position:relative;z-index:5}
.dot-item{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;min-height:44px}
.dot-mark{width:10px;height:10px;border-radius:50%;background:var(--deep);border:2px solid var(--green);display:inline-block;transition:.2s}
.dot-item:nth-child(3){transform:translateY(-4px)}
.dot-item.is-active{font-weight:800;color:var(--ink)}
.dot-item.is-active .dot-mark{width:14px;height:14px;background:var(--green)}
.site-main{min-height:55vh}
.wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.section{padding:54px 0}
.section.compact{padding:36px 0}
.section-title{margin:0 0 10px;color:var(--ink);font-size:20px;line-height:1.35}
.section-lead{margin:0;color:var(--muted);max-width:720px}
h1{font-size:24px;line-height:1.3;color:var(--ink);margin:0 0 14px}
h2{font-size:20px;line-height:1.4;color:var(--ink);margin:0 0 12px}
h3{font-size:16px;line-height:1.5;color:var(--ink);margin:0 0 8px}
p{margin:0 0 12px}
.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--green);font-weight:800;margin-bottom:10px}
.hero-simple{padding:44px 0 28px}
.hero-simple .lead{font-size:16px;color:var(--muted);max-width:760px}
.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green2));color:var(--paper);border:0}
.btn-secondary{background:var(--paper);color:var(--ink);border:1px solid var(--green)}
.btn:hover,.app-link:hover,.menu-button:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(42,138,114,.28);outline-offset:2px}
.media-slot{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);min-height:120px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-164{height:164px}.media-200{height:200px}.media-240{height:240px}.media-300{height:300px}.media-320{height:320px}
.index-intro{padding:34px 0 42px;background:linear-gradient(180deg,var(--paper),var(--bg))}
.mini-index{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 20px;padding:0;list-style:none}
.mini-index a{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:var(--soft);color:var(--ink);font-size:13px}
.mini-index i{width:8px;height:8px;border-radius:50%;background:var(--green);display:block}
.split-strip{display:grid;grid-template-columns:1.05fr .95fr;background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.split-copy{padding:30px}.split-copy p:last-child{margin-bottom:0}
.vertical-records{display:grid;gap:16px;position:relative}
.record-item{display:grid;grid-template-columns:92px 1fr;gap:18px;padding:20px;background:var(--paper);border-left:4px solid var(--green);border-radius:0 12px 12px 0}
.record-item .media-slot{grid-row:span 2;min-height:116px}
.page-clips{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.clip-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}
.clip-card.offset{transform:translateY(24px)}
.topic-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.topic-card{padding:22px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}
.period-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.period-row article{padding:18px;background:var(--paper);border-top:3px solid var(--gold);border-radius:12px}
.status-list{display:grid;gap:10px}
.status-row{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.status-tag{display:inline-flex;justify-content:center;padding:6px 10px;border-radius:999px;background:var(--soft);color:var(--ink);font-weight:800;font-size:13px}
.app-feature{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:center}
.app-icon-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.icon-slot{width:48px;height:48px;min-height:48px;border-radius:12px}
.long-copy{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:var(--shadow)}
.long-copy p:last-child{margin-bottom:0}
.faq-short{display:grid;gap:10px}
.faq-short details,.faq-full details{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
summary{cursor:pointer;font-weight:800;color:var(--ink)}
.faq-short details p,.faq-full details p{margin:10px 0 0}
/* inner layouts */
.record-page{display:grid;grid-template-columns:120px 1fr;gap:22px}
.record-rail{border-right:1px solid var(--line-strong);padding-right:16px;color:var(--muted);font-size:13px}
.record-body{display:grid;gap:18px}.record-body article{background:var(--paper);padding:22px;border-radius:12px}
.open-book{display:grid;grid-template-columns:1fr 1fr;background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.open-book>section{padding:26px}.open-book>section+section{border-left:1px solid var(--line)}
.open-book .media-slot{margin-bottom:18px}
.clip-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:18px;align-items:start}.clip-stack{display:grid;gap:16px}.clip-stack article{background:var(--paper);padding:22px;border-radius:14px;border:1px solid var(--line)}
.single-flow{max-width:760px;margin:0 auto}.single-flow article{padding:22px 0;border-bottom:1px solid var(--line)}
.memo-list{display:grid;gap:12px}.memo-list article{display:grid;grid-template-columns:38px 1fr;gap:14px;background:var(--paper);padding:18px;border-radius:12px}.memo-no{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:var(--paper);font-weight:800}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.method-card{background:var(--paper);border:1px solid var(--line);padding:22px;border-radius:12px}.method-card.wide{grid-column:1/-1}
.special-list{display:grid;gap:14px}.special-list article{display:grid;grid-template-columns:150px 1fr;background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden}.special-list strong{display:flex;align-items:center;padding:20px;background:var(--soft);color:var(--ink)}.special-list div{padding:20px}
.center-cards{max-width:780px;margin:0 auto;display:grid;gap:16px}.center-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;text-align:center}.center-card p{max-width:620px;margin:0 auto 12px}
.terms{display:grid;gap:14px}.terms section{background:var(--paper);border-left:4px solid var(--green);padding:20px 22px;border-radius:0 12px 12px 0}
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.help-grid article{background:var(--paper);padding:22px;border-radius:12px;border:1px solid var(--line)}
.contact-stack{display:grid;gap:16px;max-width:800px}.contact-stack article{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px}.contact-note{padding:18px;background:var(--soft);border-radius:12px}
.banner-slot{height:200px;margin:20px 0 28px}
.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid rgba(244,250,248,.35);padding:36px 0 calc(34px + env(safe-area-inset-bottom))}
.footer-inner{width:min(calc(100% - 32px),var(--max));margin:0 auto}.footer-brand{display:flex;gap:12px;align-items:center;padding-bottom:18px;border-bottom:1px solid rgba(244,250,248,.18)}.footer-brand div{display:flex;flex-direction:column;line-height:1.35}.footer-brand span{font-size:12px;opacity:.8}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:24px 0}.footer-links h2{font-size:13px;color:var(--paper);margin:0 0 8px}.footer-links a{display:block;font-size:13px;color:var(--bg);padding:4px 0;opacity:.92}.footer-note,.copyright{font-size:13px;color:var(--bg);opacity:.88}.copyright{margin-top:8px}
.page-overlay{position:fixed;inset:0;z-index:1090;background:rgba(10,30,24,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-open{opacity:1;visibility:visible}
.side-drawer{position:fixed;z-index:1100;top:82px;left:0;width:36vw;max-width:440px;min-width:320px;max-height:calc(100vh - 96px);overflow:auto;background:var(--paper);border-radius:0 16px 16px 0;box-shadow:var(--shadow);padding:16px;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.24s}.side-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:10px;border-bottom:1px solid var(--line)}.drawer-brand{gap:10px}.drawer-group{padding-top:12px}.drawer-group h2{font-size:13px;color:var(--green);margin:0 0 6px}.drawer-group>a{display:grid;grid-template-columns:90px 1fr;gap:8px;padding:9px 0;border-bottom:1px dashed var(--line)}.drawer-group>a span{font-size:12px;color:var(--muted)}.close-button{min-height:44px;border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);border-radius:10px;padding:0 12px}
.search-layer{position:fixed;z-index:1110;top:82px;left:50%;width:min(620px,calc(100% - 32px));transform:translate(-50%,-14px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.search-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.search-card label{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.search-card input{width:100%;height:44px;border:1px solid var(--line-strong);background:#fff;color:var(--ink);border-radius:10px;padding:0 12px}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-presets a{padding:8px 12px;border-radius:999px;background:var(--soft);font-size:13px}.search-empty{font-size:13px;color:var(--muted);margin-top:12px}
.mobile-bottom{display:none}
@media (max-width:720px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}.top-strip-inner,.brand-bar-inner{padding:0 16px}.dot-nav{display:none}.brand-actions{gap:6px}.app-link,.menu-button{padding:0 12px}.section{padding:40px 0}.hero-simple{padding-top:34px}.split-strip,.open-book,.app-feature,.page-clips,.topic-cards,.period-row,.record-page,.clip-layout,.method-grid,.help-grid{grid-template-columns:1fr}.open-book>section+section{border-left:0;border-top:1px solid var(--line)}.record-rail{border-right:0;border-bottom:1px solid var(--line-strong);padding:0 0 10px}.clip-card.offset{transform:none}.special-list article{grid-template-columns:1fr}.status-row{grid-template-columns:100px 1fr}.app-feature{gap:18px}.app-feature .media-slot{max-width:300px;margin:0 auto;width:100%}.footer-links{grid-template-columns:repeat(2,1fr)}.side-drawer{top:74px;width:88vw;min-width:0;max-height:calc(100vh - 132px)}.search-layer{inset:0;width:100%;transform:none;background:var(--green);padding:86px 16px 70px}.search-layer.is-open{transform:none}.search-card{background:transparent;border:0;box-shadow:none;color:var(--paper);padding:0}.search-head strong,.search-card label{color:var(--paper)}.search-card .close-button{background:transparent;border-color:rgba(244,250,248,.55);color:var(--paper)}.search-card input{background:var(--paper)}.search-presets a{background:rgba(244,250,248,.16);border:1px solid rgba(244,250,248,.24);color:var(--paper)}.search-empty{color:var(--paper)}.mobile-bottom{position:fixed;z-index:1050;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(--paper);border-top:1px solid var(--line)}.mobile-bottom a{display:grid;place-items:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-active{background:var(--green);color:var(--paper)}
}
@media (max-width:430px){.footer-links{grid-template-columns:1fr 1fr}.record-item{grid-template-columns:1fr}.record-item .media-slot{grid-row:auto}.status-row{grid-template-columns:1fr}.status-tag{justify-self:start}.drawer-group>a{grid-template-columns:82px 1fr}}