*{box-sizing:border-box;margin:0;padding:0}
:root{--gold:#c8a45c;--gold-light:#e4c87a;--gold-dark:#80601f;--bg:#08090b;--card:#121317;--line:rgba(200,164,92,.2);--text:#ebe8e2;--muted:#929292}
html{scroll-behavior:smooth}body{min-height:100vh;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans",sans-serif;line-height:1.7}
body:before{content:"";position:fixed;inset:0;z-index:-2;background:linear-gradient(rgba(6,7,9,.72),rgba(6,7,9,.96)),url("images/news-update-cover.webp") center top/cover no-repeat}
body:after{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(circle at 50% 12%,rgba(200,164,92,.1),transparent 38%),repeating-linear-gradient(90deg,transparent 0,transparent 79px,rgba(255,255,255,.015) 80px)}
a{color:inherit}.nav{height:76px;padding:0 clamp(1.25rem,4vw,4rem);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:20;background:rgba(8,9,11,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.brand{text-decoration:none;display:flex;align-items:center;gap:.8rem}.brand-mark{width:32px;height:32px;border:1px solid var(--gold);display:grid;place-items:center;transform:rotate(45deg)}.brand-mark:after{content:"2B";font-size:.62rem;color:var(--gold-light);transform:rotate(-45deg);font-weight:800}.brand strong{color:var(--gold-light);letter-spacing:.14em}.nav-links{display:flex;align-items:center;gap:1.5rem}.nav-links>a{text-decoration:none;color:var(--muted);font-size:.88rem}.nav-links>a:hover,.nav-links>a.active{color:var(--gold-light)}.lang{display:flex;border:1px solid var(--line)}.lang a{text-decoration:none;padding:.28rem .62rem;font-size:.72rem;color:var(--muted)}.lang a.active{background:var(--gold);color:#090909}
.hero{padding:clamp(4.5rem,9vw,8rem) 1.5rem clamp(3rem,6vw,5rem);text-align:center}.eyebrow{color:var(--gold);font-size:.75rem;letter-spacing:.35em;margin-bottom:1rem}.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.6rem,6vw,5rem);letter-spacing:.08em;line-height:1.1}.hero p{max-width:650px;margin:1.25rem auto 0;color:var(--muted)}
.main{width:min(1280px,calc(100% - 3rem));margin:0 auto 6rem}.toolbar{display:flex;align-items:end;justify-content:space-between;padding-bottom:1rem;border-bottom:1px solid var(--line);margin-bottom:1.5rem}.toolbar h2{font-size:1.05rem;letter-spacing:.12em}.count{font-size:.75rem;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}.news-card{min-width:0;background:linear-gradient(145deg,rgba(25,26,30,.98),rgba(12,13,16,.98));border:1px solid rgba(255,255,255,.1);transition:transform .25s,border-color .25s,box-shadow .25s;overflow:hidden}.news-card:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 18px 50px rgba(0,0,0,.38)}
.cover{height:180px;position:relative;background:url("images/news-cover-cn.webp") center/cover no-repeat}html[lang="en"] .cover{background-image:url("images/news-cover-en.webp")}.cover:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,10,12,.9),transparent 65%)}.badge{position:absolute;z-index:1;left:1rem;bottom:1rem;color:#0a0a0a;background:var(--gold-light);padding:.18rem .55rem;font-size:.72rem;font-weight:700;letter-spacing:.08em}.news-card:first-child .badge:after{content:" · NEW"}
.card-body{padding:1.25rem}.meta{display:flex;gap:.8rem;color:var(--muted);font-size:.72rem;letter-spacing:.08em}.card-body h3{font-size:1.12rem;margin:.55rem 0 .7rem;line-height:1.45}.summary{color:#aaa;font-size:.88rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:3em}.read-more{margin-top:1.1rem;width:100%;border:0;border-top:1px solid rgba(255,255,255,.08);padding:1rem 0 0;background:none;color:var(--gold-light);text-align:left;cursor:pointer;font:inherit;font-size:.82rem}.read-more:after{content:"＋";float:right}.news-card.open .read-more:after{content:"−"}
.details{display:none;padding:0 1.25rem 1.4rem;border-top:1px solid rgba(255,255,255,.06)}.news-card.open{grid-column:1/-1}.news-card.open .cover{height:min(75vw,640px);background-size:contain;background-repeat:no-repeat;background-color:#030303}.news-card.open .details{display:block}.details h4{color:var(--gold-light);font-size:.93rem;margin:1.3rem 0 .45rem}.details ul{list-style:none}.details li{position:relative;padding:.25rem 0 .25rem 1rem;color:#c8c6c1;font-size:.9rem}.details li:before{content:"◆";position:absolute;left:0;color:var(--gold-dark);font-size:.55rem;top:.52rem}.code{margin-top:1.25rem;border:1px solid var(--line);padding:.85rem 1rem;color:var(--gold-light);font-family:Consolas,monospace;font-size:.86rem;background:rgba(200,164,92,.06)}
.footer{text-align:center;border-top:1px solid var(--line);padding:2rem 1rem;color:#696969;font-size:.75rem}.footer a{color:var(--gold);text-decoration:none}
@media(max-width:900px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nav-links>a:not(.active){display:none}}
.nav-links>a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.08rem;line-height:1.15;text-align:center;white-space:nowrap}.nav-main{font-size:.86rem;letter-spacing:.06em}.nav-sub{font-size:.5rem;line-height:1;letter-spacing:.1em;color:#5f5e5a}.nav-links>a:hover .nav-sub,.nav-links>a.active .nav-sub{color:rgba(210,172,97,.68)}
@media(max-width:620px){.nav{height:66px}.brand strong{display:none}.news-grid{grid-template-columns:1fr}.main{width:min(100% - 2rem,1280px)}.hero{padding-top:3.5rem}.cover{height:190px}.news-card.open .cover{height:calc((100vw - 2rem)*.75)}.news-card.open{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.news-grid{grid-template-columns:1fr;max-width:960px;margin:0 auto;gap:1rem}.news-card{border-radius:8px;overflow:hidden}.news-card:hover{transform:none;border-color:rgba(200,164,92,.35);box-shadow:0 12px 38px rgba(0,0,0,.25)}.cover,.read-more{display:none}.card-body{padding:1.4rem 1.5rem 1rem}.meta{align-items:center}.latest{padding:.05rem .38rem;background:var(--gold-light);color:#090909;font-weight:800}.card-body h3{font-family:Georgia,"Microsoft YaHei",serif;font-size:1.28rem;color:#f1e5c9}.summary{display:block;min-height:0;font-size:.92rem;line-height:1.7}.details{display:block;padding:0 1.5rem 1.4rem;border-top:1px solid rgba(255,255,255,.07)}.details summary{cursor:pointer;padding:1rem 0 0;color:var(--gold-light);font-size:.84rem;list-style:none}.details summary::-webkit-details-marker{display:none}.details summary:after{content:"＋";float:right}.details[open] summary:after{content:"−"}.details .close-label{display:none}.details[open] .read-label{display:none}.details[open] .close-label{display:inline}.details h4{font-size:.96rem}.details li{font-size:.92rem;line-height:1.75}.code strong{color:var(--gold-light)}@media(max-width:620px){.card-body{padding:1.15rem 1.1rem .85rem}.details{padding:0 1.1rem 1.2rem}.card-body h3{font-size:1.12rem}}