/* ===== 路势科技矩阵 · 共享设计系统 (static, no-build) ===== */
:root{
  --accent:#4f6ef7;          /* 各站在 index 内覆写 */
  --accent-2:#7b93ff;
  --bg:#0b0f1a;
  --bg-soft:#111726;
  --panel:#141b2d;
  --panel-2:#182135;
  --line:rgba(255,255,255,.08);
  --txt:#e8ecf6;
  --muted:#9aa6c2;
  --white:#ffffff;
  --radius:16px;
  --maxw:1180px;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --font: "Segoe UI", -apple-system, "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font); color:var(--txt); line-height:1.7;
  background:
    radial-gradient(1200px 600px at 80% -10%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent 55%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}

/* language switch */
[data-lang="zh"] .en{display:none}
[data-lang="en"] .zh{display:none}

/* ---- top contact bar ---- */
.topbar{background:#05070d;border-bottom:1px solid var(--line);font-size:13.5px}
.topbar .wrap{max-width:var(--maxw);margin:0 auto;padding:8px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar .contact{display:flex;gap:22px;align-items:center;color:var(--muted);flex-wrap:wrap}
.topbar .contact a{color:var(--muted);transition:.2s}
.topbar .contact a:hover{color:var(--white)}
.topbar .contact .ic{color:var(--accent);margin-right:6px}
.langtoggle{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.langtoggle button{background:transparent;border:0;color:var(--muted);padding:5px 13px;cursor:pointer;font-size:12.5px;font-weight:600;letter-spacing:.04em}
.langtoggle button.active{background:var(--accent);color:#fff}

/* ---- header / nav ---- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(9,12,20,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{max-width:var(--maxw);margin:0 auto;padding:16px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.02em}
.brand .logo{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 8px 24px color-mix(in srgb,var(--accent) 45%,transparent)}
.brand .logo svg{width:22px;height:22px}
.brand b{font-size:17px}
.brand span{display:block;font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.14em;text-transform:uppercase}
.menu{display:flex;gap:26px;align-items:center;font-size:14.5px;font-weight:600}
.menu a{color:var(--muted);transition:.2s;position:relative}
.menu a:hover{color:var(--white)}
.menu a.cta{color:#fff;background:var(--accent);padding:9px 18px;border-radius:999px}
.menu a.cta:hover{filter:brightness(1.08)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);color:var(--txt);border-radius:8px;padding:7px 10px;cursor:pointer}

/* ---- layout ---- */
section{padding:88px 0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.eyebrow{color:var(--accent-2);font-weight:800;letter-spacing:.2em;text-transform:uppercase;font-size:12.5px;margin-bottom:14px}
h1,h2,h3{line-height:1.2;margin:0 0 18px}
h1{font-size:clamp(30px,5vw,54px);font-weight:850;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.4vw,36px);font-weight:800}
h3{font-size:19px;font-weight:750}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--muted);max-width:760px}
.grad{background:linear-gradient(120deg,var(--accent),var(--accent-2) 60%,#c9d4ff);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---- hero ---- */
.hero{padding:96px 0 72px;position:relative;overflow:hidden}
.hero .wrap{position:relative;z-index:2}
.hero .badges{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 30px}
.pill{border:1px solid var(--line);background:rgba(255,255,255,.03);padding:7px 15px;border-radius:999px;font-size:13px;color:var(--muted)}
.pill b{color:var(--txt)}
.btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.btn{padding:13px 26px;border-radius:12px;font-weight:700;font-size:15px;transition:.2s;border:1px solid transparent}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 14px 34px color-mix(in srgb,var(--accent) 40%,transparent)}
.btn.primary:hover{transform:translateY(-2px)}
.btn.ghost{border-color:var(--line);color:var(--txt)}
.btn.ghost:hover{border-color:var(--accent);color:#fff}
.hero-orb{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero-orb::before,.hero-orb::after{content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.hero-orb::before{width:420px;height:420px;right:-80px;top:-60px;background:var(--accent)}
.hero-orb::after{width:320px;height:320px;left:-60px;bottom:-120px;background:var(--accent-2)}

/* ---- cards / grid ---- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.card .ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent-2);margin-bottom:16px}
.card .ico svg{width:24px;height:24px}
.card p{color:var(--muted);margin:0}
.card h3{margin-bottom:8px}
.tag{display:inline-block;font-size:12px;color:var(--accent-2);border:1px solid color-mix(in srgb,var(--accent) 40%,var(--line));border-radius:999px;padding:3px 11px;margin-bottom:12px}

/* ---- feature split ---- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.panel{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.kv{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.kv:last-child{border-bottom:0}
.kv .n{color:var(--accent-2);font-weight:800;font-variant-numeric:tabular-nums}

/* ---- stats ---- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .num{font-size:34px;font-weight:850;color:#fff}
.stat .lbl{color:var(--muted);font-size:13.5px}

/* ---- matrix ---- */
.matrix .card{display:flex;flex-direction:column;gap:8px}
.matrix .dom{font-size:12.5px;color:var(--accent-2);letter-spacing:.04em}
.matrix .card .go{margin-top:auto;color:var(--accent-2);font-weight:700;font-size:14px}

/* ---- feed (news/insights) ---- */
.feed{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.post:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.post .cover{height:150px;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 55%,#000),color-mix(in srgb,var(--accent-2) 55%,#000));position:relative}
.post .cover .k{position:absolute;left:16px;bottom:12px;font-weight:800;font-size:15px;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.4)}
.post .body{padding:20px}
.post .meta{color:var(--muted);font-size:12.5px;margin-bottom:8px}
.post h3{font-size:17px;margin-bottom:8px}
.post p{color:var(--muted);font-size:14px;margin:0}

/* ---- footer ---- */
.site-footer{border-top:1px solid var(--line);background:#05070d;padding:56px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
.site-footer h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.site-footer a{display:block;color:var(--muted);padding:5px 0;transition:.2s}
.site-footer a:hover{color:#fff}
.foot-brand p{color:var(--muted);max-width:340px}
.foot-bottom{max-width:var(--maxw);margin:30px auto 0;padding:20px 22px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.foot-bottom a{color:var(--muted)}
.foot-bottom a:hover{color:#fff}

/* ---- responsive ---- */
@media(max-width:900px){
  .g-3,.g-4,.feed,.stats,.foot-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .menu{position:absolute;top:70px;right:22px;left:22px;flex-direction:column;align-items:stretch;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;display:none}
  .menu.open{display:flex}
  .menu a{padding:10px 8px}
  .menu-toggle{display:inline-flex}
}
@media(max-width:560px){
  .g-2,.g-3,.g-4,.feed,.stats,.foot-grid{grid-template-columns:1fr}
  section{padding:60px 0}
}