/* Clash · 对撞分流粒子图谱主题 */
:root{
--bg:#FFFFFF;--bg-2:#F4F7FB;--panel:#FFFFFF;
--main:#1B3A6B;--main-dark:#0C2448;--grad:linear-gradient(135deg,#1B3A6B,#3A6EA5);
--ink:#0C2448;--ink-soft:#3A4E6B;--muted:#5F708A;
--line:#E4E9F2;--green:#3A6EA5;--amber:#3A6EA5;
--shadow:0 12px 40px rgba(27,58,107,.14);--radius:12px;
--glow:0 0 24px rgba(27,58,107,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--main);text-decoration:none}
a:hover{color:var(--main-dark)}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.ico{width:20px;height:20px;flex:none}
h1,h2,h3{line-height:1.25;font-weight:800}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo img{width:30px;height:30px;border-radius:8px}
.wordmark{display:flex;flex-direction:column;line-height:1.1}
.wordmark b{font-size:19px;letter-spacing:.5px}
.wordmark i{font-size:11px;color:var(--muted);font-style:normal}

.nav{position:sticky;top:0;z-index:80;background:#FFFFFF;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(27,58,107,.06)}
.nav-in{max-width:1180px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.nav .logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.nav .logo img{width:32px;height:32px;border-radius:8px}
.menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.menu-item{display:inline-flex;align-items:center;padding:8px 14px;border-radius:8px;color:var(--ink-soft);font-size:14.5px;font-weight:600;transition:.18s;white-space:nowrap}
.menu-item:hover{color:var(--main);background:var(--bg-2)}
.menu-item.on{color:#fff;background:var(--main)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;background:var(--grad);color:#fff;padding:10px 18px;border-radius:12px;font-weight:700;font-size:14px;box-shadow:var(--glow);white-space:nowrap;flex:none}
.nav-cta .ico{width:18px;height:18px}
.nav-cta:hover{filter:brightness(1.06);color:#fff}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}

.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;padding:13px 24px;border-radius:12px;font-size:15px;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn .ico{width:18px;height:18px}
.btn-main{background:var(--grad);color:#fff;box-shadow:var(--glow)}
.btn-main:hover{filter:brightness(1.08);color:#fff}
.btn-ghost{background:transparent;color:var(--main);border-color:rgba(27,58,107,.5)}
.btn-ghost:hover{border-color:var(--main);color:var(--main);background:rgba(27,58,107,.08)}
.btn-big{padding:16px 30px;font-size:16px}

.hero{position:relative;overflow:hidden;padding:110px 0 120px;color:#fff;background:linear-gradient(rgba(12,36,72,.46),rgba(12,36,72,.66)),url("../images/server-rack.jpg") center/cover no-repeat}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(27,58,107,.32),rgba(12,36,72,.14) 55%,transparent)}
.hero-in{position:relative;z-index:2}
.hero-card{max-width:700px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:24px;padding:48px 52px;box-shadow:0 24px 70px rgba(12,36,72,.4)}
.hero-tag{display:inline-block;background:rgba(255,255,255,.16);color:#fff;font-weight:700;font-size:13px;padding:6px 16px;border-radius:999px;margin-bottom:20px;letter-spacing:.04em;border:1px solid rgba(255,255,255,.3)}
.hero-card h1{font-size:46px;letter-spacing:-.01em;margin-bottom:14px;line-height:1.14;color:#fff}
.hero-card h1 span{display:block;font-size:25px;margin-top:12px;font-weight:800;color:#A9C2E8}
.hero-slogan{font-size:20px;font-weight:800;color:#fff;margin:14px 0 16px;letter-spacing:.01em}
.hero-sub{font-size:16.5px;color:rgba(255,255,255,.9);max-width:600px;margin:0 0 18px;line-height:1.85}
.hero-feats{display:flex;flex-wrap:wrap;gap:12px 26px;margin:20px 0 28px;list-style:none}
.hero-feats li{display:flex;align-items:center;gap:9px;font-size:15.5px;color:#fff;font-weight:600}
.hero-feats .ico{width:19px;height:19px;color:#A9C2E8;flex:none}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero-card .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.hero-card .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.hero-points{display:flex;gap:10px;flex-wrap:wrap}
.hero-points span{font-size:13px;color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);padding:5px 14px;border-radius:8px}
.hero-orbit{position:absolute;right:5%;top:50%;transform:translateY(-50%);width:400px;opacity:.9;pointer-events:none}
.hero-orbit .svgcoll{width:100%;height:auto;filter:drop-shadow(0 0 24px rgba(58,110,165,.5))}

.section{padding:72px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head h2{font-size:34px;margin-bottom:12px}
.sec-head p{color:var(--ink-soft);font-size:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.rev .split-media{order:-1}
.split-txt h2{font-size:32px;margin-bottom:16px}
.split-txt p{color:var(--ink-soft);margin-bottom:14px}
.split-media{display:flex;flex-direction:column;gap:18px;align-items:center}
.media-frame{width:100%;border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.ticklist{list-style:none;margin-top:8px}
.ticklist li{display:flex;align-items:center;gap:9px;padding:7px 0;color:var(--ink);font-weight:500}
.ticklist .ico{width:18px;height:18px;color:var(--main)}

.svgcoll,.svgroute{display:block;filter:drop-shadow(0 0 10px rgba(27,58,107,.22))}
.kernel-sec .svgcoll{width:100%;max-width:300px}
.config-sec .svgroute{width:100%;max-width:360px}
.kernel-sec{background:var(--bg)}
.config-sec{background:var(--bg-2)}

.route-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.route-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px;text-align:center;transition:.2s}
.route-card:hover{border-color:var(--main);box-shadow:var(--glow)}
.route-card .ico{width:30px;height:30px;color:var(--main);margin:0 auto 12px}
.route-card .svgroute{width:100%;max-width:150px;margin:0 auto 12px}
.route-card strong{font-size:17px;display:block;margin-bottom:8px}
.route-card p{color:var(--ink-soft);font-size:14px}
.routing-sec{background:var(--bg)}

.platform-sec{background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.device-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.device-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;text-align:center}
.device-card .ico{width:40px;height:40px;color:var(--main);margin:0 auto 14px}
.device-card strong{font-size:17px}
.device-card p{color:var(--ink-soft);font-size:13.5px;margin-top:4px}

.compare-sec{background:var(--bg)}
.cmp-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cmp-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px}
.cmp-card .ico{width:28px;height:28px;color:var(--amber);margin-bottom:12px}
.cmp-card strong{font-size:16px;display:block;margin-bottom:8px}
.cmp-card p{color:var(--ink-soft);font-size:14px}

.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{border-radius:14px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.scene-card img{width:100%;aspect-ratio:4/5;object-fit:cover}
.scene-cap{position:absolute;left:0;right:0;bottom:0;padding:16px;background:linear-gradient(180deg,transparent,rgba(12,36,72,.95));color:#fff}
.scene-cap strong{font-size:16px}
.scene-cap p{font-size:13px;opacity:.85}

.faq-list{max-width:760px;margin:0 auto}
.faq-sec{background:var(--bg-2)}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;position:relative;padding-right:46px;color:var(--ink)}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--main)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 22px 18px;color:var(--ink-soft)}
.faq-more{text-align:center;margin-top:26px}

.cta-sec{padding-bottom:80px}
.cta-card{background:linear-gradient(120deg,var(--main),var(--amber));border-radius:16px;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;box-shadow:0 20px 60px rgba(27,58,107,.3);flex-wrap:wrap}
.cta-txt h2{font-size:30px;color:#fff}
.cta-txt p{opacity:.94;margin-top:6px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-card .btn-main{background:#fff;color:var(--main);box-shadow:none}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.cta-card .btn-ghost:hover{border-color:#fff;color:#fff}

.foot{background:#0C2448;color:#C9D4E6;margin-top:0;border-top:1px solid rgba(255,255,255,.06)}
.foot a{color:#C9D4E6}
.foot a:hover{color:#3A6EA5}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding:56px 24px 40px}
.foot .wordmark b{color:#fff}
.foot .wordmark i{color:#5F708A}
.foot-brand p{color:#5F708A;font-size:13.5px;margin-top:12px;max-width:300px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-col a{display:block;font-size:14px;padding:5px 0;color:#5F708A}
.foot-out{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;text-align:center;font-size:13px;color:#5F708A}
.foot-out a{color:#C9D4E6;margin:0 8px}
.foot-out a:hover{color:#3A6EA5}
.foot-copy{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:13px;color:#5F708A}

.sub-hero{background:linear-gradient(120deg,#F4F7FB,#FFFFFF);padding:64px 24px 56px;text-align:center}
.sub-hero h1{font-size:40px;margin-bottom:10px}
.sub-hero h1 span{display:block;font-size:22px;color:var(--main);margin-top:6px}
.sub-hero p{color:var(--ink-soft);max-width:640px;margin:0 auto 22px;font-size:16px}
.sub-hero .hero-actions{justify-content:center;margin-top:10px}
.crumb{text-align:center;font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--main)}

.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plat-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
.plat-card:hover{transform:translateY(-5px);box-shadow:var(--glow);border-color:rgba(27,58,107,.6)}
.plat-img{height:150px;overflow:hidden}
.plat-img img{width:100%;height:100%;object-fit:cover}
.plat-info{padding:20px}
.plat-info h3{font-size:18px;margin-bottom:6px}
.plat-info p{color:var(--ink-soft);font-size:13.5px;margin-bottom:16px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;text-align:center}
.step em{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;background:var(--grad);color:#fff;border-radius:10px;font-style:normal;font-weight:800;font-size:20px;margin-bottom:14px;box-shadow:var(--glow)}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--ink-soft);font-size:13.5px}
.spec-table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:13px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.spec-table th{background:var(--bg-2);font-weight:700;color:var(--main)}
.spec-table tr:last-child td{border-bottom:none}

.cmp-table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.cmp-table th,.cmp-table td{padding:15px 16px;text-align:center;font-size:14.5px;border-bottom:1px solid var(--line)}
.cmp-table th{background:var(--grad);color:#fff;font-weight:700}
.cmp-table td:first-child{text-align:left;font-weight:600}
.cmp-table tr:nth-child(even){background:var(--bg-2)}

.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:30px}
.contact-card .ico{width:30px;height:30px;color:var(--main);margin-bottom:14px}
.contact-card h3{font-size:18px;margin-bottom:8px}
.contact-card p{color:var(--ink-soft);font-size:14.5px}

.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:26px;margin:30px 0 12px}
.prose h3{font-size:20px;margin:22px 0 10px}
.prose p{color:var(--ink-soft);margin-bottom:14px;font-size:15.5px}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--ink-soft)}
.prose li{margin-bottom:7px}
.prose img{border-radius:12px;margin:18px 0}
.sitemap-list{list-style:none}
.sitemap-list li{padding:8px 0;border-bottom:1px solid var(--line)}
.sitemap-list a{font-size:16px;font-weight:600}

.searchbox{display:flex;gap:12px;max-width:560px;margin:0 auto 30px}
.searchbox input{flex:1;border:1px solid var(--line);border-radius:10px;padding:13px 20px;font-size:15px;outline:none;background:var(--panel);color:var(--ink)}
.search-results a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:12px;color:var(--ink)}
.search-results a strong{color:var(--main)}

.art-hero{text-align:left;padding:48px 24px 40px}
.art-hero .crumb{margin-bottom:12px}
.art-hero h1{font-size:34px;margin-bottom:12px;line-height:1.3}
.art-lead{font-size:17px;color:var(--ink-soft);max-width:760px;margin:0}
.art-wrap{display:grid;grid-template-columns:230px 1fr;gap:44px;align-items:start}
.art-side{position:sticky;top:24px}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;font-size:14px}
.toc strong{display:block;font-size:15px;margin-bottom:10px;color:var(--ink)}
.toc a{display:block;padding:6px 0;color:var(--ink-soft);border-bottom:1px dashed var(--line)}
.toc a:last-child{border-bottom:none}
.toc a:hover{color:var(--main)}
.art-body{max-width:760px}
.art-body h2{font-size:24px;margin:30px 0 12px;padding-left:14px;border-left:4px solid var(--main)}
.art-body p{color:var(--ink-soft);margin-bottom:14px;font-size:16px;line-height:1.85}
.art-body img{border-radius:12px;margin:20px 0;box-shadow:var(--shadow)}
.art-body img:first-of-type{width:100%;aspect-ratio:16/9;object-fit:cover}
.art-conclusion{background:var(--bg-2);border-left:4px solid var(--main);border-radius:0 14px 14px 0;padding:18px 20px;margin:28px 0}
.art-conclusion strong{color:var(--main)}
.art-conclusion p{color:var(--ink);margin-top:6px}
.art-cta{background:linear-gradient(120deg,var(--main),var(--amber));border-radius:14px;padding:26px;text-align:center;margin:26px 0;color:#fff}
.art-cta p{color:#fff;margin-bottom:12px;font-size:16px}
.art-cta .btn-main{background:#fff;color:var(--main)}
.rel-block{margin-top:34px}
.rel-block h3{font-size:20px;margin-bottom:14px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.rel-card span{font-weight:700}
.rel-card em{font-size:13px;color:var(--main);font-style:normal}

.backtop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;border:none;font-size:22px;cursor:pointer;box-shadow:var(--glow);opacity:0;pointer-events:none;transition:.3s;z-index:90}
.backtop.show{opacity:1;pointer-events:auto}

@media(max-width:960px){
.nav-in{padding:11px 16px;gap:10px}
.nav .wordmark b{font-size:15px}
.menu{overflow-x:auto;gap:2px}
.menu-item{padding:8px 12px;font-size:13px}
.nav-cta{padding:9px 14px;font-size:13px}
.hero{padding:84px 0 96px}
.hero-card{padding:36px 32px}
.hero-card h1{font-size:40px}
.hero-card h1 span{font-size:22px}
.hero-orbit{display:none}
.split,.split.rev{grid-template-columns:1fr}
.route-row,.cmp-row,.device-row,.scene-grid,.plat-grid,.steps,.contact-grid{grid-template-columns:repeat(2,1fr)}
.foot-grid{grid-template-columns:1fr 1fr}
.art-wrap{grid-template-columns:1fr}
.art-side{position:static}
.nav-toggle{display:block}
}
@media(max-width:560px){
.route-row,.cmp-row,.device-row,.scene-grid,.plat-grid,.steps,.contact-grid,.rel-grid{grid-template-columns:1fr}
.hero-feats{flex-direction:column;align-items:flex-start}
.hero-card{padding:28px 22px}
.hero-card h1{font-size:32px}
.hero-card h1 span{font-size:19px}
.sec-head h2{font-size:26px}
}

.art-sec,.steps-sec,.sys-sec,.scene-sec,.faq-sec{}