:root{--bg:#F3FBFA;--deep:#E4F4F1;--card:#FFFFFF;--soft:#D4EFEC;--ink:#0D2E2B;--text:#163834;--muted:#4A706C;--aux:#6A8E89;--brand:#0E9A88;--bright:#1EC8B6;--dark:#0A6B5E;--porcelain:#F7FFFE;--line:rgba(14,154,136,.16);--line-strong:rgba(14,154,136,.42);--shadow:0 12px 28px rgba(10,107,94,.08);--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.no-scroll{overflow:hidden}a{color:inherit;text-decoration:none}a,button{touch-action:manipulation}button{font:inherit}img{display:block;max-width:100%}
.skip-link{position:fixed;left:16px;top:-80px;z-index:300;background:#fff;color:var(--dark);padding:10px 14px;border-radius:10px}.skip-link:focus{top:10px}
.cyan-line{position:fixed;top:0;left:0;right:0;height:22px;background:var(--dark);color:#fff;z-index:100;font-size:12px}.top-inner,.stage-inner,.mirror-nav,.site-main,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}.top-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button{min-width:44px;height:22px;padding:0 4px;border:0;background:transparent;color:#fff;cursor:pointer}
.stage-bar{position:fixed;top:22px;left:0;right:0;height:60px;background:#fff;border-bottom:1px solid var(--line);z-index:100}.stage-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px;max-width:180px}.brand-logo{height:28px;width:auto;max-width:148px;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:800;color:var(--dark)}
.drawer-trigger{min-width:88px;height:44px;padding:0 16px;border:1px solid var(--line-strong);border-radius:12px;background:var(--porcelain);color:var(--dark);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:7px}.drawer-dots{letter-spacing:1px;color:var(--brand)}.app-link{justify-self:end;min-width:88px;height:44px;padding:0 15px;border-radius:12px;background:linear-gradient(135deg,#1EC8B6 0%,#0E9A88 55%,#0A6B5E 100%);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.mirror-nav{position:fixed;top:82px;left:50%;transform:translateX(-50%);height:40px;z-index:95;background:var(--porcelain);border:1px solid var(--line);border-top:0;border-radius:0 0 14px 14px;display:flex;align-items:center;justify-content:center;gap:8px;padding:4px}.mirror-nav a{height:30px;min-width:92px;padding:0 14px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:var(--dark);font-size:13px}.mirror-nav a.is-active{background:var(--brand);color:#fff}
.site-main{padding-top:146px;padding-bottom:56px}.hero-after-media{margin-top:16px}.section{margin:0 0 28px}.page-hero{background:linear-gradient(180deg,var(--porcelain),var(--deep));border:1px solid var(--line);border-radius:14px;padding:28px;margin-bottom:28px;box-shadow:var(--shadow)}.eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand);font-weight:800;margin-bottom:6px}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--ink);margin-bottom:12px}h2{font-size:20px;line-height:1.4;color:var(--ink);margin-bottom:10px}h3{font-size:16px;line-height:1.45;color:var(--ink);margin-bottom:8px}p{margin-bottom:14px}.lead{font-size:16px;color:var(--muted);max-width:820px}
.hero-actions,.section-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:42px;padding:0 16px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;border:1px solid transparent}.btn-primary{background:linear-gradient(135deg,#1EC8B6 0%,#0E9A88 55%,#0A6B5E 100%);color:#fff}.btn-secondary{background:#fff;color:var(--dark);border-color:var(--line-strong)}.btn:hover,.app-link:hover,.drawer-trigger:hover{filter:brightness(.98);transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(30,200,182,.35);outline-offset:3px}
.cover-slot{height:260px}.media-slot{width:100%;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;align-items:center;justify-content:center}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-placeholder{width:100%;height:100%;background:linear-gradient(135deg,var(--porcelain),var(--deep));position:relative}.media-placeholder:after{content:"";position:absolute;inset:16% 12%;border:1px dashed var(--line-strong);border-radius:12px}.media-180{height:180px}.media-200{height:200px}.media-260{height:260px}.media-app{height:min(360px,70vw)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:var(--shadow)}.card .media-slot{margin-bottom:16px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:14px}.section-head p{max-width:680px;margin:0;color:var(--muted)}
.number-list,.shelf-list,.topic-list{display:grid;gap:10px}.number-row{display:grid;grid-template-columns:58px 1fr auto;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}.number-row .num{font-size:20px;font-weight:900;color:var(--brand)}.number-row p{margin:2px 0 0;color:var(--muted)}.number-row a{color:var(--dark);font-weight:700}.shelf-row{display:grid;grid-template-columns:120px 1fr auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.shelf-row:last-child{border-bottom:0}.shelf-tag{font-size:13px;color:var(--dark);background:var(--deep);padding:7px 10px;border-radius:999px;text-align:center}.shelf-row p{margin:3px 0 0;color:var(--muted)}
.timeline{position:relative;padding-left:24px}.timeline:before{content:"";position:absolute;left:7px;top:7px;bottom:7px;width:2px;background:var(--line-strong)}.timeline-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px}.timeline-item:before{content:"";position:absolute;left:-23px;top:22px;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--bg)}.status{display:inline-flex;min-height:28px;align-items:center;padding:0 9px;border-radius:999px;background:var(--deep);color:var(--dark);font-size:12px;font-weight:800}
.longform{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}.longform section{padding:18px 0;border-bottom:1px solid var(--line)}.longform section:first-child{padding-top:0}.longform section:last-child{padding-bottom:0;border-bottom:0}.longform ul{margin:8px 0 14px;padding-left:20px}.longform li{margin:5px 0}.notice{background:var(--soft);border-left:4px solid var(--brand);border-radius:10px;padding:16px 18px;color:var(--dark)}
.index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.index-link{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;min-height:112px}.index-link strong{display:block;color:var(--ink);margin-bottom:5px}.index-link span{color:var(--muted);font-size:14px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}.faq-item h2{font-size:16px;margin-bottom:8px}
.app-panel{display:grid;grid-template-columns:minmax(240px,.75fr) 1.25fr;gap:22px;align-items:center}.icon-line{display:flex;align-items:center;gap:12px;margin-bottom:14px}.icon-slot{width:48px;height:48px;border-radius:12px;flex:0 0 48px;object-fit:contain}.mini-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.mini-card{background:var(--porcelain);border:1px solid var(--line);border-radius:12px;padding:15px}.mini-card p{font-size:14px;color:var(--muted);margin:0}
.site-footer{background:var(--dark);color:#D4EFEC;border-top:1px solid rgba(247,255,254,.25);padding:34px 0 78px;font-size:13px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand-mark{min-width:90px}.footer-brand strong{display:block;color:#fff;font-size:16px}.footer-brand span{color:#D4EFEC}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:20px 0;border-top:1px solid rgba(247,255,254,.18);border-bottom:1px solid rgba(247,255,254,.18)}.footer-grid h2{color:#fff;font-size:14px;margin-bottom:9px}.footer-grid a{display:block;padding:5px 0;color:#D4EFEC}.footer-note{max-width:880px;margin:18px 0 8px}.copyright{margin:0;color:#D4EFEC}
.screen-mask{position:fixed;inset:0;background:rgba(13,46,43,.42);z-index:110;opacity:0;pointer-events:none;transition:opacity .2s}.screen-mask.is-active{opacity:1;pointer-events:auto}.drawer-panel{position:fixed;left:50%;bottom:0;transform:translate(-50%,105%);width:min(720px,100%);max-height:70vh;background:#fff;border:1px solid var(--line);border-radius:18px 18px 0 0;z-index:120;visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s;box-shadow:0 -24px 50px rgba(10,107,94,.18);overflow:hidden}.drawer-panel.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}.drawer-head{height:62px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.close-button{min-width:64px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:#fff;color:var(--dark);cursor:pointer}.drawer-content{padding:14px 18px 24px;overflow:auto;max-height:calc(70vh - 62px);display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.drawer-group h2{font-size:14px;margin:0 0 8px;color:var(--brand)}.drawer-group a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}.drawer-group a:last-child{border-bottom:0}.drawer-group strong{display:block;font-size:14px;color:var(--ink)}.drawer-group span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.search-layer{position:fixed;left:50%;top:92px;transform:translate(-50%,-20px);width:min(720px,calc(100% - 32px));z-index:125;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.search-layer.is-open{transform:translate(-50%,0);visibility:visible;opacity:1;pointer-events:auto}.search-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 22px 50px rgba(10,107,94,.18)}.search-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.search-head h2{margin:0}.search-card>p{color:var(--muted);margin:12px 0}.search-presets{display:flex;flex-wrap:wrap;gap:9px}.search-presets a{min-height:42px;padding:0 13px;border:1px solid var(--line-strong);border-radius:10px;display:flex;align-items:center;color:var(--dark);background:var(--porcelain)}.mobile-bottom{display:none}
@media (max-width:820px){.mirror-nav{display:none}.site-main{padding-top:104px;padding-bottom:78px}.stage-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}.brand-link{max-width:120px}.brand-logo{max-width:112px}.drawer-trigger{min-width:76px;padding:0 10px}.app-link{min-width:76px;padding:0 10px}.grid-3,.grid-2,.app-panel,.mini-columns{grid-template-columns:1fr}.index-grid{grid-template-columns:repeat(2,1fr)}.page-hero{padding:20px}.number-row{grid-template-columns:50px 1fr}.number-row>a{grid-column:2}.shelf-row{grid-template-columns:1fr auto}.shelf-tag{grid-column:1/-1;justify-self:start}.shelf-row p{grid-column:1}.footer-grid{grid-template-columns:repeat(2,1fr)}.drawer-panel{max-height:78vh}.drawer-content{max-height:calc(78vh - 62px);grid-template-columns:1fr}.search-layer{inset:0;transform:none;width:auto;background:var(--dark)}.search-layer.is-open{transform:none}.search-card{min-height:100%;border:0;border-radius:0;background:var(--dark);color:#fff;padding:calc(22px + env(safe-area-inset-top)) 18px 80px;box-shadow:none}.search-card h2,.search-card .eyebrow,.search-card>p{color:#fff}.search-card .close-button{border-color:rgba(255,255,255,.45);background:transparent;color:#fff}.search-presets a{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28);color:#fff}.mobile-bottom{position:fixed;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(5,1fr);background:#fff;border-top:1px solid var(--line);z-index:90}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--dark)}.mobile-bottom a.is-active{background:var(--brand);color:#fff}.site-footer{padding-bottom:82px}}
@media (max-width:520px){.top-inner,.stage-inner,.site-main,.footer-inner{width:calc(100% - 32px)}h1{font-size:24px}h2{font-size:20px}.cover-slot{height:220px}.media-200{height:180px}.media-180{height:170px}.index-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.page-hero,.card,.longform{padding-left:16px;padding-right:16px}}