*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f5fbf9;--white:#fff;--teal:#00a896;--teal-d:#008f7f;
  --mint:#dcf5ef;--dark:#1a2832;--muted:#5a6b75;
  --display:"Outfit","Noto Sans SC",system-ui,sans-serif;
  --body:"Inter","Noto Sans SC",system-ui,sans-serif;
  --mono:"IBM Plex Mono",monospace;
  --max:1100px;--pad:clamp(18px,4vw,36px);--section:clamp(56px,7vw,84px)
}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--bg);color:var(--dark);line-height:1.65;overflow-x:hidden}
a{color:var(--teal);text-decoration:none}
img{display:block;max-width:100%;border-radius:12px}

.ticker{background:var(--dark);color:#fff;overflow:hidden;padding:10px 0;font-size:.78rem}
.ticker-track{display:flex;gap:48px;animation:ticker 30s linear infinite;width:max-content}
.ticker-item{display:flex;align-items:center;gap:8px;white-space:nowrap}
.ticker-item .tag{background:var(--teal);color:#fff;padding:2px 8px;border-radius:3px;font-size:.65rem;font-weight:700}
@keyframes ticker{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

.site-header{position:sticky;top:0;z-index:200;background:var(--white);border-bottom:1px solid #e0ebe8;box-shadow:0 2px 12px rgba(0,80,70,.06)}
.header-inner{max-width:var(--max);margin:0 auto;padding:0 var(--pad);height:62px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:.95rem;color:var(--dark);text-decoration:none}
.brand img{width:28px;height:28px}
.main-nav{display:flex;gap:4px}
.main-nav a{padding:8px 16px;color:var(--muted);font-size:.82rem;font-weight:600;text-decoration:none;border-radius:20px;transition:.2s}
.main-nav a:hover{color:var(--teal);background:var(--mint)}
.main-nav a.on{color:#fff;background:var(--teal)}
.nav-cta{padding:9px 20px;background:var(--teal);color:#fff;font-size:.82rem;font-weight:700;text-decoration:none;border-radius:20px}
.nav-cta:hover{background:var(--teal-d)}

.dl-cta-bar{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:28px;padding:20px 24px;background:var(--white);border:2px solid var(--teal);border-radius:16px;box-shadow:0 8px 28px rgba(0,100,90,.1)}
.dl-cta-bar .ver-badge{font-family:var(--mono);font-size:.72rem;color:var(--teal);background:var(--mint);padding:5px 12px;border-radius:20px;font-weight:600}
.cta-xl{padding:15px 28px;font-size:.92rem;font-weight:700;border-radius:24px;box-shadow:0 4px 18px rgba(0,168,150,.3);transition:.2s}
.cta-xl.cta-dark{background:var(--teal);color:#fff}
.cta-xl.cta-dark:hover{background:var(--teal-d);transform:translateY(-1px)}
.dl-cta-note{font-size:.78rem;color:var(--muted);line-height:1.5;max-width:280px}
.dl-card{position:relative}
.dl-card.rec{border-color:var(--teal);background:linear-gradient(135deg,var(--mint),var(--white))}
.dl-card .rec-tag{position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:var(--teal);color:#fff;font-size:.62rem;font-weight:700;padding:3px 10px;border-radius:10px}
.dl-card .plat{font-family:var(--mono);font-size:.68rem;font-weight:600;color:var(--teal);margin-bottom:6px}
.dl-section-head{margin-bottom:18px}
.dl-section-head h2{font-family:var(--display);font-size:1.25rem;margin-bottom:4px}
.dl-section-head p{font-size:.82rem;color:var(--muted)}
.hero-actions .cta-xl{box-shadow:0 4px 18px rgba(0,168,150,.25)}

.page{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.crumb{padding:18px 0 0;font-size:.72rem;color:var(--muted)}

.poster-hero{padding:clamp(40px,6vw,72px) 0 var(--section);display:grid;grid-template-columns:1fr 1.05fr;gap:28px;align-items:center}
.hero-eyebrow{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);margin-bottom:10px;font-weight:600}
.poster-hero h1{font-family:var(--display);font-size:clamp(2rem,4vw,2.8rem);font-weight:800;line-height:1.1;margin-bottom:14px}
.poster-hero p{color:var(--muted);font-size:.92rem;margin-bottom:22px;max-width:460px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta{padding:12px 24px;font-size:.84rem;font-weight:700;border-radius:24px;text-decoration:none;display:inline-block;transition:.2s}
.cta-dark{background:var(--teal);color:#fff}
.cta-dark:hover{background:var(--teal-d)}
.cta-line{border:2px solid var(--teal);color:var(--teal)}
.cta-line:hover{background:var(--mint)}
.hero-visual img{box-shadow:0 20px 50px rgba(0,100,90,.15);cursor:pointer}
.hero-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px;grid-column:1/-1}
.hero-stat{background:var(--white);border:1px solid #e0ebe8;border-radius:12px;padding:16px;text-align:center}
.hero-stat b{display:block;font-family:var(--display);font-size:1.1rem;color:var(--teal);margin-bottom:4px}
.hero-stat span{font-size:.72rem;color:var(--muted)}

.search-demo{background:var(--dark);border-radius:16px;padding:24px;margin:var(--section) 0;color:#fff}
.search-demo-label{font-size:.72rem;color:var(--teal);letter-spacing:.08em;margin-bottom:12px}
.search-box{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.08);border:2px solid var(--teal);border-radius:12px;padding:14px 18px;margin-bottom:16px}
.search-box .icon{color:var(--teal);font-size:1.2rem}
.search-box .query{font-family:var(--mono);font-size:1rem;color:#fff;flex:1}
.search-box .cursor{display:inline-block;width:2px;height:1.1em;background:var(--teal);animation:blink 1s step-end infinite;vertical-align:text-bottom}
@keyframes blink{50%{opacity:0}}
.demo-results{display:flex;flex-direction:column;gap:6px}
.demo-result{padding:10px 14px;background:rgba(255,255,255,.05);border-radius:8px;font-size:.82rem;font-family:var(--mono);opacity:0;transform:translateY(8px);transition:.3s}
.demo-result.show{opacity:1;transform:translateY(0)}
.demo-result .path{color:#8899aa;font-size:.72rem;margin-top:2px}

.section{padding:var(--section) 0}
.section-head{margin-bottom:32px}
.section-num{font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:6px;font-weight:600}
.section-head h2{font-family:var(--display);font-size:clamp(1.5rem,3vw,2rem);font-weight:800}
.section-head p{margin-top:8px;color:var(--muted);font-size:.88rem;max-width:520px}

.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.feat-card{background:var(--white);border:1px solid #e0ebe8;border-radius:14px;padding:22px;transition:.25s}
.feat-card:hover{box-shadow:0 8px 24px rgba(0,100,90,.1);transform:translateY(-2px)}
.feat-card.accent{border-color:var(--teal);background:linear-gradient(135deg,var(--mint),var(--white))}
.feat-card .idx{font-family:var(--mono);font-size:.68rem;color:var(--teal);font-weight:600;margin-bottom:8px}
.feat-card h3{font-family:var(--display);font-size:.95rem;margin-bottom:6px}
.feat-card p{font-size:.82rem;color:var(--muted)}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.two-col img{cursor:pointer;box-shadow:0 12px 32px rgba(0,80,70,.12)}
.two-col h3{font-family:var(--display);font-size:1.2rem;margin-bottom:10px}
.two-col p{color:var(--muted);font-size:.88rem;margin-bottom:12px}
.filter-table{width:100%;border-collapse:collapse;font-size:.82rem;margin-top:16px}
.filter-table th,.filter-table td{padding:10px 12px;text-align:left;border-bottom:1px solid #e0ebe8}
.filter-table th{color:var(--teal);font-family:var(--mono);font-size:.78rem}
.filter-table code{font-family:var(--mono);background:var(--mint);padding:2px 6px;border-radius:4px;font-size:.78rem}

.news-list{display:flex;flex-direction:column;gap:10px}
.news-row{display:grid;grid-template-columns:96px 1fr;gap:16px;padding:18px;background:var(--white);border:1px solid #e0ebe8;border-radius:12px;text-decoration:none;color:inherit;transition:.2s}
.news-row:hover{border-color:var(--teal);box-shadow:0 4px 16px rgba(0,100,90,.08)}
.news-row time{font-size:.76rem;color:var(--teal);font-weight:600}
.news-row h3{font-size:.92rem;margin-bottom:4px}
.news-row p{font-size:.8rem;color:var(--muted)}

.faq-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.faq-box{background:var(--white);border:1px solid #e0ebe8;border-radius:12px;padding:18px}
.faq-box h4{font-size:.88rem;margin-bottom:6px;color:var(--teal)}
.faq-box p{font-size:.82rem;color:var(--muted)}

.site-foot{padding:32px 0;border-top:1px solid #e0ebe8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.78rem;color:var(--muted)}
.friend-links{width:100%;margin-top:8px;font-size:.72rem}

.page-title{padding:40px 0 24px}
.page-title h1{font-family:var(--display);font-size:clamp(1.8rem,3.5vw,2.2rem);margin-bottom:10px}
.page-title p{color:var(--muted);max-width:560px}

.dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:24px}
.dl-card{background:var(--white);border:1px solid #e0ebe8;border-radius:14px;padding:24px;text-align:center}
.dl-card h3{font-family:var(--display);margin:10px 0 6px}
.dl-card p{font-size:.82rem;color:var(--muted);margin-bottom:14px}

.prose{max-width:680px}
.prose h2{font-family:var(--display);font-size:1.15rem;margin:28px 0 10px;color:var(--teal)}
.prose p{color:var(--muted);margin-bottom:12px;font-size:.9rem}
.prose code{font-family:var(--mono);background:var(--mint);padding:2px 6px;border-radius:4px;font-size:.85rem}
.prose ul,.prose ol{color:var(--muted);font-size:.9rem;margin:0 0 12px 20px}
.prose li{margin-bottom:6px}

.dl-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start;padding-bottom:8px}
.dl-hero img{cursor:pointer;box-shadow:0 16px 40px rgba(0,100,90,.12)}
.dl-card .size{font-size:.72rem;color:var(--muted);margin:4px 0 14px}

.story-block{background:var(--white);border:1px solid #e0ebe8;border-radius:14px;padding:22px 24px;margin-bottom:14px}
.story-block h3{font-family:var(--display);font-size:.95rem;margin-bottom:8px;color:var(--teal)}
.story-block p{font-size:.86rem;color:var(--muted);line-height:1.7}

.checklist{counter-reset:ck;list-style:none;margin:16px 0;padding:0}
.checklist li{counter-increment:ck;padding:14px 14px 14px 48px;background:var(--white);border:1px solid #e0ebe8;border-radius:12px;margin-bottom:8px;font-size:.86rem;color:var(--muted);position:relative;line-height:1.65}
.checklist li::before{content:counter(ck);position:absolute;left:14px;top:14px;width:24px;height:24px;background:var(--teal);color:#fff;border-radius:50%;font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center}

.warm-tip{background:var(--mint);border-radius:12px;padding:16px 20px;font-size:.84rem;color:var(--dark);line-height:1.65;margin-top:20px}
.warm-tip b{color:var(--teal)}

@media(max-width:820px){.dl-hero{grid-template-columns:1fr}}

/* ── Download: poster + scenario picker (unique to 搜文件) ── */
.poster-dl{
  text-align:center;padding:48px 24px 40px;margin-bottom:28px;
  background:linear-gradient(160deg,var(--dark) 0%,#0a2824 100%);
  border-radius:20px;color:#fff;position:relative;overflow:hidden
}
.poster-dl::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%,rgba(0,168,150,.25),transparent 50%)
}
.poster-dl>*{position:relative;z-index:1}
.poster-dl h2{font-family:var(--display);font-size:clamp(1.6rem,4vw,2.2rem);margin-bottom:8px}
.poster-dl .sub-dl{color:rgba(255,255,255,.65);font-size:.88rem;margin-bottom:28px;max-width:420px;margin-inline:auto}
.poster-dl .mega-dl{
  display:inline-flex;align-items:center;gap:10px;
  padding:18px 40px;background:var(--teal);color:#fff;
  font-size:1rem;font-weight:700;border-radius:32px;text-decoration:none;
  box-shadow:0 8px 32px rgba(0,168,150,.45);transition:.2s
}
.poster-dl .mega-dl:hover{background:var(--teal-d);transform:translateY(-2px)}
.poster-dl .mega-dl small{display:block;font-size:.68rem;font-weight:500;opacity:.85;margin-top:2px}
.poster-dl .alt-links{margin-top:16px;font-size:.78rem;color:rgba(255,255,255,.5)}
.poster-dl .alt-links a{color:var(--teal);margin:0 8px}

.scenario-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.scenario-tile{
  background:var(--white);border:2px solid #e0ebe8;border-radius:16px;padding:24px;
  text-align:center;transition:.25s;display:flex;flex-direction:column
}
.scenario-tile:hover{border-color:var(--teal);box-shadow:0 8px 24px rgba(0,100,90,.12)}
.scenario-tile.pick{border-color:var(--teal);background:linear-gradient(180deg,var(--mint),var(--white))}
.scenario-tile .emoji{font-size:2rem;margin-bottom:10px}
.scenario-tile h3{font-family:var(--display);font-size:1rem;margin-bottom:8px}
.scenario-tile p{font-size:.82rem;color:var(--muted);flex:1;margin-bottom:16px;line-height:1.6}
.scenario-tile .cta{width:100%;text-align:center;margin-top:auto}

.dl-more{margin-top:8px;border:1px solid #e0ebe8;border-radius:12px;overflow:hidden}
.dl-more summary{
  padding:14px 18px;cursor:pointer;font-weight:600;font-size:.88rem;
  background:var(--white);list-style:none;color:var(--teal)
}
.dl-more summary::-webkit-details-marker{display:none}
.dl-more .more-list{padding:0 18px 16px;background:var(--white)}
.dl-more .more-row{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:10px 0;border-bottom:1px solid #eef4f2;font-size:.82rem
}
.dl-more .more-row:last-child{border:none}
.dl-more .more-row code{font-family:var(--mono);font-size:.76rem;color:var(--dark)}
.dl-more .more-row a{color:var(--teal);font-weight:600;font-size:.78rem;white-space:nowrap}

.hero-dl-pill{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  padding:10px 18px;background:var(--mint);border:1px solid var(--teal);
  border-radius:24px;font-size:.82rem;color:var(--dark);text-decoration:none;font-weight:600
}
.hero-dl-pill:hover{background:var(--teal);color:#fff}
@media(max-width:820px){.scenario-picker{grid-template-columns:1fr}}

.news-timeline{padding-bottom:var(--section)}
.news-tl{padding:28px 0;border-bottom:1px solid #e0ebe8}
.news-tl time{font-size:.76rem;color:var(--teal);font-weight:600}
.news-tl h3{font-family:var(--display);font-size:1.1rem;margin:8px 0 10px}
.news-tl p{color:var(--muted);font-size:.88rem;margin-bottom:10px}
.news-tl img{margin-top:14px;cursor:pointer}

.modal{position:fixed;inset:0;background:rgba(0,0,0,.8);z-index:999;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:.3s}
.modal.open{opacity:1;pointer-events:auto}
.modal img{max-width:92vw;max-height:88vh;border-radius:12px}
.modal-close{position:absolute;top:20px;right:24px;background:none;border:none;color:#fff;font-size:1.4rem;cursor:pointer}

.fab-nav{position:fixed;bottom:24px;right:24px;z-index:300}
.fab-toggle{width:52px;height:52px;border-radius:50%;background:var(--teal);color:#fff;border:none;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 16px rgba(0,100,90,.3);transition:.3s}
.fab-toggle.open{transform:rotate(45deg)}
.fab-menu{position:absolute;bottom:64px;right:0;display:flex;flex-direction:column;gap:6px;opacity:0;pointer-events:none;transition:.3s}
.fab-nav.open .fab-menu{opacity:1;pointer-events:auto}
.fab-menu a{padding:10px 16px;background:var(--white);border:1px solid #e0ebe8;border-radius:20px;font-size:.78rem;font-weight:600;text-decoration:none;color:var(--dark);white-space:nowrap;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.fab-menu a.on{background:var(--teal);color:#fff;border-color:var(--teal)}

@media(max-width:820px){
  .poster-hero,.two-col{grid-template-columns:1fr}
  .hero-strip{grid-template-columns:1fr}
  .news-row{grid-template-columns:1fr}
}