:root{
  --bg:#F4FBFA;--deep:#E7F6F4;--card:#FFFFFF;--soft:#F7FCFB;
  --title:#0E3A38;--text:#1C4A47;--muted:#3D6B68;--faint:#6A8E8B;
  --cyan:#1AA6A0;--cyan2:#7EDCD4;--cyan3:#0E6E6A;--coral:#E07A62;--amber:#E2B23A;
  --border:rgba(26,166,160,.28);--shadow:0 12px 28px rgba(14,58,56,.08)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.75 -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}img{display:block;max-width:100%}
.site-head{position:fixed;top:0;left:0;right:0;z-index:50}.head-inner{max-width:960px;margin:auto;padding:0 16px}
.top-strip{height:16px;background:var(--cyan3);color:var(--bg);font-size:12px;line-height:16px}
.top-strip .head-inner{display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:none;color:var(--bg);height:16px;padding:0 4px}
.brand-bar{height:58px;background:var(--bg);border-bottom:2px solid var(--cyan)}.brand-row{height:100%;display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:9px}.logo-slot{height:28px;display:flex;align-items:center}.logo-slot img{height:28px;width:auto;object-fit:contain}
.brand-copy{display:flex;flex-direction:column;line-height:1.05}.brand-copy strong{font-size:16px;color:var(--title)}.brand-copy small{font-size:12px;color:var(--muted);margin-top:4px}
.head-actions{display:flex;gap:8px;white-space:nowrap}.secondary-small,.primary-small{height:44px;min-width:76px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:0 14px;font-size:14px}
.secondary-small{background:#fff;border:1px solid var(--border);color:var(--title)}.primary-small{border:0;color:var(--bg);background:linear-gradient(135deg,var(--cyan2) 0%,var(--cyan) 52%,var(--cyan3) 100%);box-shadow:0 6px 16px rgba(26,166,160,.24)}
.ripple-nav{height:42px;background:var(--deep)}.ripple-line{position:relative;max-width:960px;height:42px;margin:auto;padding:0 16px;display:flex;align-items:center;gap:clamp(18px,6vw,70px)}
.ripple-line:before{content:"";position:absolute;left:16px;right:16px;top:20px;height:2px;background:var(--cyan)}
.ripple-line a{position:relative;z-index:1;background:var(--deep);padding-right:8px;display:flex;align-items:center;gap:7px;color:var(--muted);font-size:13px}
.dot{width:10px;height:10px;border:2px solid var(--cyan);border-radius:50%;background:var(--deep)}.ripple-line a.active{color:var(--cyan3);font-weight:700}.ripple-line a.active .dot{background:var(--cyan);box-shadow:0 0 0 3px rgba(126,220,212,.50),0 6px 16px rgba(26,166,160,.24)}
.site-main{max-width:960px;margin:auto;padding:142px 16px 56px}.breadcrumb{font-size:13px;color:var(--faint);margin-bottom:16px}.breadcrumb a{color:var(--cyan3)}
h1,h2,h3{color:var(--title);margin:0 0 12px}h1{font-size:24px;line-height:1.3}h2{font-size:20px;line-height:1.4}h3{font-size:16px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:760px}
.eyebrow{display:inline-block;font-size:12px;padding:4px 9px;border-radius:999px;background:var(--deep);color:var(--cyan3);margin-bottom:8px}.intro{padding:24px 0 18px;border-bottom:1px solid var(--border);margin-bottom:26px}.micro{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px;color:var(--muted);font-size:13px}.micro span{border-bottom:2px solid var(--cyan2)}
.section{margin:26px 0;padding:22px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.soft{background:var(--soft)}.edge{border-left:6px solid var(--cyan)}
.cuo-lan{display:grid;grid-template-columns:1fr 1fr;gap:18px}.cuo-lan .section:nth-child(2){margin-top:42px}.horizontal{display:grid;grid-template-columns:240px 1fr;gap:22px;align-items:center}.wrap-text .image-slot{float:right;margin:0 0 14px 22px}.wrap-text:after{content:"";display:block;clear:both}
.image-slot{height:160px;background:var(--bg);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.image-slot.h168{height:168px}.image-slot.w240{width:240px}.image-slot.vertical{width:240px;height:320px}.image-slot.banner{width:100%;height:200px}.caption{font-size:13px;color:var(--faint);margin-top:7px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.tag{font-size:12px;padding:4px 9px;border-radius:999px;background:var(--deep);color:var(--cyan3)}.tag.amber{background:rgba(226,178,58,.16);color:#765600}.tag.coral{background:rgba(224,122,98,.13);color:#934b39}
.buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.btn,.btn-secondary{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:12px;font-size:14px;transition:all 180ms}.btn{color:var(--bg);background:linear-gradient(135deg,var(--cyan2),var(--cyan) 52%,var(--cyan3));box-shadow:0 6px 16px rgba(26,166,160,.24)}.btn-secondary{background:#fff;border:1px solid var(--border);color:var(--title)}
.btn:hover,.primary-small:hover{filter:brightness(1.05);box-shadow:0 0 0 3px rgba(126,220,212,.50),0 10px 24px rgba(14,110,106,.24)}.btn:active,.primary-small:active{filter:brightness(1.06);box-shadow:0 0 0 4px rgba(224,122,98,.36),0 0 22px rgba(26,166,160,.50)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan3);outline-offset:2px}.list{padding-left:1.2em}.list li{margin:6px 0}.note{padding:14px 16px;border-left:4px solid var(--amber);background:#fffaf0;border-radius:0 12px 12px 0}
.app-grid{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start}.icon-slot{width:48px;height:48px;border:1px solid var(--border);border-radius:12px;background:var(--bg);display:flex;align-items:center;justify-content:center}.icon-slot img{width:48px;height:48px;object-fit:contain}.faq-item{padding:17px 0;border-bottom:1px solid var(--border)}.faq-item:last-child{border-bottom:0}
.site-footer{background:var(--title);color:var(--deep);border-top:1px solid var(--cyan);font-size:13px;padding:30px 16px 78px}.footer-inner{max-width:960px;margin:auto}.footer-brand{display:flex;gap:8px;align-items:center;margin-bottom:18px}.footer-brand img{height:28px;object-fit:contain}.footer-brand span{color:var(--cyan2)}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-grid h3{color:var(--cyan2);font-size:13px}.footer-grid a{display:block;margin:5px 0}.footer-note{margin-top:18px}.copyright{color:var(--cyan2)}
.overlay{position:fixed;inset:0;background:rgba(14,58,56,.38);z-index:80}.overlay[hidden]{display:none}.bag-panel,.search-panel{visibility:hidden;pointer-events:none;opacity:0;position:fixed;z-index:90;background:#fff;box-shadow:0 18px 50px rgba(14,58,56,.2);transition:opacity 180ms,transform 180ms}.bag-panel.open,.search-panel.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}
.bag-panel{top:78px;left:max(16px,calc((100vw - 960px)/2 + 120px));width:min(600px,calc(100vw - 32px));max-height:70vh;overflow:auto;border-top:6px solid var(--cyan);border-radius:0 0 18px 18px;transform:translateY(-10px)}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.bag-brand{display:flex;align-items:center;gap:8px}.bag-brand img{height:28px;width:auto;object-fit:contain}.panel-head button{height:44px;border:1px solid var(--border);background:#fff;color:var(--title);border-radius:10px}
.bag-groups{padding:8px 16px 18px}.bag-groups>div{padding:10px 0;border-bottom:1px solid var(--border)}.bag-groups a{display:block;padding:7px 9px;border-radius:9px}.bag-groups a:hover{background:var(--deep)}.bag-groups a span{display:block;color:var(--faint);font-size:12px}
.search-panel{top:84px;right:max(16px,calc((100vw - 960px)/2 + 16px));width:420px;max-width:calc(100vw - 32px);border-radius:16px;padding-bottom:16px;transform:translateY(-8px)}.search-panel>p,.search-panel>input,.search-presets{margin-left:16px;margin-right:16px}.search-panel>p{margin-top:14px}.search-panel input{width:calc(100% - 32px);height:44px;border:1px solid var(--border);border-radius:12px;padding:0 12px;color:var(--title)}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-presets a{padding:7px 11px;background:var(--deep);border:1px solid var(--border);border-radius:999px}.search-tip{font-size:12px;color:var(--faint)}.modal-open{overflow:hidden}.mobile-bottom{display:none}
@media(max-width:720px){.ripple-nav{display:none}.site-main{padding-top:94px;padding-bottom:76px}.secondary-small,.primary-small{min-width:68px;padding:0 10px}.cuo-lan,.horizontal,.app-grid{grid-template-columns:1fr}.cuo-lan .section:nth-child(2){margin-top:0}.wrap-text .image-slot{float:none;margin:0 0 14px;width:100%}.image-slot.vertical,.image-slot.w240{width:100%}.footer-grid{grid-template-columns:repeat(2,1fr)}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:60;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--bg);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}.mobile-bottom a.active{color:var(--cyan3);font-weight:700;border-top:2px solid var(--cyan);box-shadow:0 -5px 14px rgba(26,166,160,.18)}.bag-panel{top:74px;left:16px;max-height:calc(100vh - 100px)}.search-panel{inset:0;width:100%;max-width:none;border-radius:0;background:var(--title);color:var(--deep);transform:none}.search-panel .panel-head{border-bottom-color:rgba(126,220,212,.25)}.search-panel .panel-head strong{color:var(--deep)}.search-panel .panel-head button{background:none;color:var(--deep);border-color:rgba(126,220,212,.45)}.search-panel input{background:#fff}.search-presets a{background:rgba(126,220,212,.12);color:var(--deep);border-color:rgba(126,220,212,.35)}.search-tip{color:var(--cyan2)}}