:root{
  --ink:#1a1a1a; --ink-2:#4a4a4a; --muted:#6f6f6f; --line:#e2e2e2; --bg:#f4f4f4; --white:#fff;
  --brand:#f9b900; --brand-ink:#121212; --navy:#14246b; --amber:#fff8e1; --amber-line:#e9cf7a;
  --radius:2px; --max:1120px;
  --fs-0:clamp(13px,.9vw,14px); --fs-1:clamp(15px,1vw,16px); --fs-2:clamp(18px,1.3vw,21px);
  --fs-3:clamp(22px,1.8vw,28px); --fs-4:clamp(30px,3.4vw,46px); --fs-5:clamp(34px,4.4vw,56px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans Japanese","Microsoft YaHei",sans-serif;
  font-size:var(--fs-1);line-height:1.75}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header：黑底 + 白字 + 黄色下边线（与本社一致） */
.top{position:sticky;top:0;z-index:20;background:#0b0b0b;border-bottom:3px solid var(--brand)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:14px;text-decoration:none}
.logo img{height:32px;width:auto;display:block}
.logo b{font-size:21px;letter-spacing:.12em;color:#fff}
.logo span{font-size:11px;color:#b9b9b9;letter-spacing:.12em;white-space:nowrap}
.nav{display:flex;gap:26px;font-size:var(--fs-0);align-items:center}
.nav a{text-decoration:none;color:#d8d8d8;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{color:#fff;border-color:var(--brand)}
.nav .cta{color:var(--brand-ink);background:var(--brand);border:0;padding:9px 18px;border-radius:2px;font-weight:700}
.nav .cta:hover{background:#ffc82b;border:0}

.crumb{background:#f4f4f4;border-bottom:1px solid var(--line);font-size:var(--fs-0);color:var(--ink-2)}
.crumb .wrap{padding:10px 20px}
.crumb a{text-decoration:none;color:var(--ink-2)}
.crumb span{margin:0 8px;color:#aaa}

.phero{background:var(--bg);border-bottom:1px solid var(--line);padding:44px 0 36px}
.phero h1{font-size:var(--fs-4);margin:0 0 10px;letter-spacing:-.01em}
.phero p{margin:0;color:var(--ink-2);max-width:70ch}

/* 产品页 hero：近黑底 + 黄字标题 */
.hero{background:
   radial-gradient(1100px 380px at 80% -20%, rgba(249,185,0,.16), transparent 62%),
   linear-gradient(180deg,#0a0a0a 0%,#171717 100%);
  color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;border-bottom:3px solid var(--brand)}
.hero:after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.badge{font-size:12px;letter-spacing:.08em;padding:4px 10px;border-radius:2px;border:1px solid rgba(255,255,255,.3);color:#e6e6e6}
.badge.warn{border-color:var(--brand);color:var(--brand);background:rgba(249,185,0,.1)}
h1{font-size:var(--fs-4);line-height:1.15;margin:0 0 14px;letter-spacing:-.01em}
.hero h1{color:#fff}
.sub{color:#c9c9c9;max-width:52ch;margin:0 0 30px;font-size:var(--fs-2)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(249,185,0,.28);border-radius:2px;overflow:hidden}
.kpi{background:#111;padding:18px 16px}
.kpi dt{font-size:12px;color:#a9a9a9;letter-spacing:.06em;margin:0 0 6px}
.kpi dd{margin:0;font-size:var(--fs-2);font-weight:700;color:#fff}
.kpi dd small{font-size:.62em;font-weight:400;color:#b5b5b5;margin-left:4px}

/* 首页 hero：深色 + 黄字 */
.hhero{background:
   radial-gradient(900px 380px at 85% 0%, rgba(249,185,0,.18), transparent 62%),
   linear-gradient(180deg,#080808 0%,#141414 100%);
  color:#fff;padding:88px 0 76px;border-bottom:3px solid var(--brand)}
.hhero h1{font-size:var(--fs-5);margin:0 0 18px;color:#fff}
.hhero h1 em{font-style:normal;color:var(--brand)}
.hhero p{color:#c4c4c4;max-width:56ch;font-size:var(--fs-2);margin:0 0 34px}
.hhero .actions{display:flex;gap:12px;flex-wrap:wrap}

.notice{display:flex;gap:14px;align-items:flex-start;background:var(--amber);border:1px solid var(--amber-line);
  border-radius:2px;padding:16px 18px;margin:28px 0 0;font-size:var(--fs-0);color:#6b5200}
.notice b{color:#5a4300}
.notice svg{flex:none;margin-top:2px}

section{padding:56px 0}
section.alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:var(--fs-3);margin:0 0 8px;letter-spacing:-.01em}
h2:after{content:"";display:block;width:40px;height:4px;background:var(--brand);margin-top:12px}
.lead{color:var(--ink-2);max-width:70ch;margin:16px 0 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}
.sec-head a{font-size:var(--fs-0);color:var(--navy);text-decoration:none;border-bottom:1px solid var(--navy)}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--white);border:1px solid #d8d8d8;border-radius:2px;padding:22px;display:block;text-decoration:none}
.card h3{margin:0 0 8px;font-size:var(--fs-2);color:var(--navy)}
.card p{margin:0;color:var(--ink-2);font-size:var(--fs-0)}
.card .num{font-size:12px;color:#8a6a00;font-weight:700;letter-spacing:.1em}
.card .thumb{height:150px;border-radius:2px;margin:-6px 0 16px;border:1px solid #e6e6e6;
  background:repeating-linear-gradient(45deg,#f2f2f2,#f2f2f2 10px,#ececec 10px,#ececec 20px);
  display:flex;align-items:center;justify-content:center;color:#9a9a9a;font-size:12px}
.card .meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;font-size:12px;color:var(--muted)}
.card .meta span{padding:2px 8px;border:1px solid var(--line);border-radius:2px}
.card{transition:box-shadow .18s ease, transform .18s ease}
.card:hover{box-shadow:0 6px 18px rgba(0,0,0,.10);transform:translateY(-2px);border-color:#c4c4c4}

.table-wrap{overflow-x:auto;margin-top:28px;border:1px solid #d8d8d8;border-radius:2px}
table{width:100%;border-collapse:collapse;font-size:var(--fs-1);min-width:520px}
caption{text-align:left;padding:14px 18px;font-size:var(--fs-0);color:var(--ink-2);background:#f7f7f7;border-bottom:1px solid var(--line)}
th,td{padding:13px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{width:38%;font-weight:500;color:var(--ink-2);background:#fbfbfb}
tr:last-child th,tr:last-child td{border-bottom:0}
.todo{color:#7a5b00;background:#fff4cc;padding:2px 8px;border-radius:2px;font-size:12px;white-space:nowrap}

table.compare{min-width:860px}
table.compare th{width:auto;background:#f2f2f2;color:var(--ink);font-weight:700;white-space:nowrap}
table.compare td{white-space:nowrap}
table.compare td:first-child,table.compare th:first-child{position:sticky;left:0;background:#fff;z-index:1}
table.compare th:first-child{background:#f2f2f2}
table.compare tbody tr:nth-child(even) td{background:#fafafa}
table.compare tbody tr:nth-child(even) td:first-child{background:#fafafa}

.rel{display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap;
  border:1px solid #d8d8d8;border-radius:2px;padding:20px 22px;margin-top:26px}
.rel h3{margin:0;font-size:var(--fs-2);color:var(--navy)}
.rel p{margin:4px 0 0;color:var(--ink-2);font-size:var(--fs-0)}

.news{list-style:none;padding:0;margin:32px 0 0;border-top:1px solid var(--line)}
.news li{border-bottom:1px solid var(--line)}
.news a{display:flex;gap:24px;padding:18px 4px;text-decoration:none;align-items:baseline}
.news time{color:var(--muted);font-size:var(--fs-0);white-space:nowrap;font-variant-numeric:tabular-nums}
.news a:hover span{color:var(--navy);text-decoration:underline}

.cta-band{background:var(--navy);color:#fff;padding:48px 0;border-top:3px solid var(--brand)}
.cta-band .wrap{display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0}
.cta-band h2:after{display:none}
.cta-band p{margin:8px 0 0;color:#c3cbe6}
.btn{display:inline-block;text-decoration:none;font-weight:700;padding:13px 26px;border-radius:2px;font-size:var(--fs-1)}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{background:#ffc82b}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff}
.btn-light{border:1px solid #c9c9c9;color:var(--ink);background:#fff}

footer{background:#0b0b0b;color:#a8a8a8;padding:40px 0;font-size:var(--fs-0);border-top:3px solid var(--brand)}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
footer b{color:#fff;display:block;margin-bottom:8px;font-size:var(--fs-1)}
footer a{color:#a8a8a8;text-decoration:none}
footer .fine{margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);color:#7a7a7a}

@media (max-width:860px){
  .nav{display:none}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr}
}
@media (max-width:560px){
  .hero{padding:44px 0 40px}
  .hhero{padding:64px 0 56px}
  .grid{grid-template-columns:1fr}
  section{padding:40px 0}
  .kpis{grid-template-columns:1fr 1fr}
  .table-wrap{border:0;border-radius:0;overflow:visible}
  table{min-width:0;display:block}
  caption{display:block;border:1px solid var(--line);border-bottom:0}
  tbody{display:block;border:1px solid var(--line);border-top:0;overflow:hidden}
  tr{display:block;padding:12px 16px;border-bottom:1px solid var(--line)}
  tr:last-child{border-bottom:0}
  th,td{display:block;width:auto;padding:0;border:0;background:transparent;white-space:normal}
  th{font-size:12px;color:#7b7b7b;letter-spacing:.04em;margin-bottom:2px}
  td{font-size:var(--fs-1);color:var(--ink)}
  table.compare{min-width:0}
  table.compare thead{display:none}
  table.compare td:first-child{position:static;font-weight:700;color:var(--navy)}
  table.compare tbody tr:nth-child(even) td,table.compare tbody tr:nth-child(even) td:first-child{background:transparent}
  .news a{flex-direction:column;gap:4px}
}