:root{--bg:#0a0e1a;--bg2:#0f1526;--card:#151c32;--amber:#ffb547;--cyan:#6fd3ff;--text:#dfe5f2;--muted:#8f9ab3;--line:rgba(255,255,255,.1);--light:#f5f2ea;--ink:#141a2c;
--sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.8;font-size:16px}
img{display:block;max-width:100%}ul,ol{list-style:none}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.wrap{max-width:1200px;margin:0 auto;padding:0 28px}

/* 悬浮胶囊导航 */
.bar{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:40;width:min(940px,calc(100% - 28px));display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 10px 8px 22px;border:1px solid var(--line);border-radius:99px;background:rgba(14,20,38,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:.1em;white-space:nowrap}
.dot{width:12px;height:12px;border-radius:50%;background:var(--amber);box-shadow:0 0 14px 3px rgba(255,181,71,.7)}
.nav{display:flex;gap:24px;font-size:14px;color:#c4cde0}
.nav a:hover{color:var(--amber)}
.pill{background:var(--amber);color:#1a1204;font-weight:700;font-size:14px;padding:8px 22px;border-radius:99px;box-shadow:0 0 18px rgba(255,181,71,.45);white-space:nowrap}
.pill:hover{background:#ffc873}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:99px;padding:4px 16px;cursor:pointer}

/* banner */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:right center}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,14,26,.9) 0%,rgba(10,14,26,.5) 42%,rgba(10,14,26,0) 70%),linear-gradient(0deg,var(--bg) 0%,rgba(10,14,26,0) 18%)}
.hero-text{position:relative;z-index:1;width:100%;max-width:1200px;margin:0 auto;padding:110px 28px 60px}
.hero h1{font-size:clamp(40px,6.4vw,88px);font-weight:300;line-height:1.15;letter-spacing:.06em;color:#fff;animation:up .9s ease both}
.hero h1 b{font-weight:800;color:var(--amber);text-shadow:0 0 40px rgba(255,181,71,.55)}
.hero p{margin:22px 0 38px;max-width:30em;font-size:clamp(16px,1.6vw,20px);color:#c4cde0;animation:up .9s .12s ease both}
.btns{display:flex;gap:16px;flex-wrap:wrap;animation:up .9s .24s ease both}
.btn{display:inline-block;min-width:152px;padding:14px 34px;border-radius:99px;text-align:center;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--amber);color:#1a1204;box-shadow:0 0 30px rgba(255,181,71,.5)}
.btn-primary:hover{box-shadow:0 0 44px rgba(255,181,71,.8)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
@keyframes up{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

.section{padding:100px 0}
.eyebrow{font-size:13px;letter-spacing:.3em;color:var(--amber)}
h2.t{font-size:clamp(28px,3.6vw,46px);font-weight:300;letter-spacing:.06em;color:#fff;line-height:1.3;margin:8px 0 10px}
h2.t b{font-weight:800}
.sub{color:var(--muted)}

/* 产品：预览 + 列表 */
.show{display:grid;grid-template-columns:1.5fr 1fr;gap:36px;margin-top:40px;align-items:stretch}
.preview{position:relative;border-radius:20px;overflow:hidden;cursor:zoom-in;border:1px solid var(--line);box-shadow:0 0 80px rgba(255,181,71,.12);background:#000}
.preview img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:opacity .35s}
.preview img.fade{opacity:0}
.preview .cap{position:absolute;inset:auto 0 0 0;padding:56px 26px 22px;background:linear-gradient(0deg,rgba(6,9,18,.92),rgba(6,9,18,0))}
.preview .cap b{display:block;font-size:24px;color:#fff}.preview .cap span{color:#c4cde0;font-size:15px}
.list{display:flex;flex-direction:column;gap:8px}
.item{display:grid;grid-template-columns:44px 1fr;gap:2px 8px;text-align:left;background:transparent;border:1px solid transparent;border-left:3px solid var(--line);border-radius:4px 14px 14px 4px;padding:11px 16px;cursor:pointer;transition:background .25s,border-color .25s}
.item i{grid-row:span 2;font-style:normal;font-family:ui-monospace,Consolas,monospace;font-size:14px;color:var(--muted);align-self:center}
.item b{font-size:17px;color:#eef2fa}.item span{font-size:13px;color:var(--muted)}
.item:hover{background:rgba(255,255,255,.04)}
.item.on{background:linear-gradient(90deg,rgba(255,181,71,.16),rgba(255,181,71,0));border-left-color:var(--amber)}
.item.on i{color:var(--amber)}

/* 简介 */
.about{background:var(--bg2);text-align:center;position:relative;overflow:hidden}
.about::before{content:"";position:absolute;left:50%;top:-180px;width:720px;height:360px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(255,181,71,.2),transparent);pointer-events:none}
.about .lead{max-width:760px;margin:26px auto 0;text-align:left}
.about .lead p{margin-bottom:16px;color:#c4cde0;text-align:justify}
.arch{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px;text-align:left;position:relative}
.arch::before{content:"";position:absolute;left:6%;right:6%;top:-14px;height:2px;background:linear-gradient(90deg,transparent,var(--amber),var(--cyan),transparent)}
.arch li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px;position:relative}
.arch li::before{content:"";position:absolute;top:-19px;left:20px;width:10px;height:10px;border-radius:50%;background:var(--amber);box-shadow:0 0 12px var(--amber)}
.arch b{display:block;font-size:19px;color:#fff;margin-bottom:4px}.arch span{font-size:14px;color:var(--muted)}

/* 新闻：时间线（浅色区） */
.news{background:var(--light);color:var(--ink)}
.news h2.t{color:var(--ink)}.news .eyebrow{color:#b9770e}
.news-cols{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin-top:40px}
.col h3.ct{font-size:22px;font-weight:800;padding-bottom:14px;border-bottom:2px solid var(--ink);margin-bottom:8px}
.tl{position:relative;padding-left:30px}
.tl::before{content:"";position:absolute;left:6px;top:20px;bottom:20px;width:2px;background:#d8d2c2}
.entry{position:relative;padding:22px 0;border-bottom:1px solid #e4dfd1}
.entry::before{content:"";position:absolute;left:-30px;top:32px;width:14px;height:14px;border-radius:50%;background:var(--light);border:3px solid var(--amber)}
.entry time{font-size:13px;font-weight:700;color:#b9770e;font-family:ui-monospace,Consolas,monospace}
.entry h4{font-size:20px;line-height:1.5;margin:2px 0 6px}
.entry .sum{font-size:15px;color:#59607a;text-align:justify}

/* 联系 */
.contact{text-align:center;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;left:50%;bottom:-260px;width:900px;height:520px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(255,181,71,.25),transparent);pointer-events:none}
.contact h2.t{font-size:clamp(32px,5vw,64px)}
.contact .wrap>p{max-width:34em;margin:10px auto 0;color:#c4cde0}
.info{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px;text-align:left}
.info div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.info dt{font-size:12px;letter-spacing:.2em;color:var(--amber)}.info dd{font-size:17px;color:#fff}
.copy{margin-top:80px;padding:22px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);position:relative}

.lightbox{position:fixed;inset:0;z-index:60;background:rgba(4,6,12,.95);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px}
.lightbox[hidden]{display:none}
.lightbox img{max-height:80vh;max-width:min(92vw,1000px);border-radius:14px}
.lightbox p{color:#fff;font-weight:700}
.lightbox button{position:absolute;top:18px;right:22px;background:var(--amber);color:#1a1204;border:0;border-radius:99px;padding:6px 20px;font-weight:700;cursor:pointer}

@media(max-width:1000px){.show{grid-template-columns:1fr}.list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px}.item{flex:0 0 190px;border-left-width:1px;border-radius:14px;border-color:var(--line)}.item.on{border-color:var(--amber)}.news-cols{grid-template-columns:1fr;gap:44px}.arch{grid-template-columns:1fr 1fr;row-gap:34px}.info{grid-template-columns:1fr 1fr}}
@media(max-width:820px){
 .nav{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;flex-direction:column;gap:0;background:rgba(14,20,38,.96);border:1px solid var(--line);border-radius:20px;padding:8px 22px}
 .bar.open .nav{display:flex}.nav a{padding:12px 0;border-bottom:1px solid var(--line)}.nav a:last-child{border:0}
 .menu-btn{display:block}.pill{display:none}
 .section{padding:68px 0}.arch{grid-template-columns:1fr}.arch::before{display:none}.arch li::before{display:none}.info{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}