:root{
  --bg:#101014;--panel:#1a1a21;--ink:#f2f1f6;--mut:#a7a5b0;
  --accent:#e50914;--accent2:#ff8b3d;--line:#2b2b34;--maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
li{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
ul.list{margin:14px 0 0 22px} ul.list li{margin-bottom:10px}
header.site{position:sticky;top:0;z-index:50;background:rgba(16,16,20,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:baseline;font-weight:800}
.logo .mark{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));padding:5px 10px;border-radius:9px;font-size:1.2rem}
.logo .word{font-size:1.3rem;color:var(--accent);margin-left:6px}
nav.main{display:flex;gap:20px;align-items:center;font-size:.94rem}
nav.main a{color:var(--mut);padding:6px 2px;border-bottom:2px solid transparent;font-weight:600}
nav.main a:hover,nav.main a.active{color:#fff;border-color:var(--accent)}
.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:#fff;cursor:pointer}
.btn{display:inline-block;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:13px 30px;border-radius:10px;font-weight:700;font-size:.96rem;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(229,9,20,.3)}
.btn.ghost{background:transparent;color:var(--accent);border:1.5px solid var(--accent)}
.btn.sm{padding:8px 18px;font-size:.85rem}
.hero{padding:70px 0 60px;background:radial-gradient(circle at 15% 15%,rgba(229,9,20,.16),transparent 45%),radial-gradient(circle at 85% 90%,rgba(255,139,61,.12),transparent 45%),var(--bg)}
.herowrap{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}
.eyebrow{display:inline-block;color:var(--accent);font-weight:800;letter-spacing:.16em;font-size:.8rem;margin-bottom:14px;border:1px solid var(--line);padding:5px 14px;border-radius:999px}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.6rem);line-height:1.08;font-weight:900;letter-spacing:-.02em}
.hero .sub{margin:20px 0 0;color:var(--mut);font-size:1.06rem;max-width:660px}
.hero .cta-row{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.chips{margin-top:26px;display:flex;gap:10px;flex-wrap:wrap} .chips span{color:var(--accent);border:1px solid var(--line);padding:6px 14px;border-radius:999px;font-weight:600;background:var(--panel)}
.heroart{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:40px 30px;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.4)}
.heroart .big{font-size:3.6rem;font-weight:900;color:#fff;line-height:1} .heroart .big span{color:var(--accent)}
.heroart p{color:var(--mut);margin-top:14px;letter-spacing:.2em;font-size:.8rem}
section.blk{padding:58px 0} section.blk.alt{background:#16161d}
h2.sec{font-size:1.65rem;font-weight:800;margin-bottom:10px} p.sec-sub{color:var(--mut);margin-bottom:28px;max-width:640px}
.grid{display:grid;gap:20px} .g2{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.card h3{font-size:1.14rem;margin-bottom:9px;color:var(--accent)}
.card p{color:var(--mut);font-size:.95rem} .card .more{display:inline-block;margin-top:14px;color:var(--accent2);font-weight:700;font-size:.9rem}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px}
.ph{padding:13px 0;border-bottom:1px dashed var(--line);font-size:.95rem} .ph:last-child{border-bottom:0}
.ph b{display:block;color:var(--accent);margin-bottom:2px}
.split p{color:var(--mut)} .split a{color:var(--accent2)} .split a:hover{text-decoration:underline}
.note{background:#1c1c26;border-left:4px solid var(--accent);padding:16px 20px;border-radius:8px;color:var(--mut);font-size:.92rem;margin-top:26px}
.cta-band{background:linear-gradient(120deg,rgba(229,9,20,.2),rgba(255,139,61,.16));border:1px solid var(--line);border-radius:18px;padding:42px 38px;text-align:center}
.cta-band h2{color:var(--accent);font-size:1.5rem;font-weight:800}
.cta-band p{color:var(--mut);margin:10px 0 24px} .cta-band .btn{background:#fff;color:var(--accent)}
.narrow{max-width:820px!important}
.phead{padding:54px 0 30px;border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(1.9rem,4.4vw,2.9rem);font-weight:900;line-height:1.15}
.lede{margin-top:16px;max-width:700px;color:var(--mut);font-size:1.05rem}
.crumb{font-size:.85rem;color:var(--mut);margin-bottom:18px} .crumb a{color:var(--accent2)}
.steps{display:flex;flex-direction:column;gap:18px} .step{display:flex;gap:16px;align-items:flex-start}
.step b{flex:none;width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.step strong{display:block;font-size:1.08rem;color:var(--accent)} .step p{color:var(--mut);font-size:.95rem;margin-top:4px}
.faqwrap{display:flex;flex-direction:column;gap:12px}
.faq{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq summary{padding:18px 22px;cursor:pointer;font-weight:700;color:var(--accent);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--accent)}
.faq[open] summary::after{content:"–"}
.faq .a{padding:4px 22px 18px;color:var(--mut);font-size:.95rem}
footer.site{border-top:1px solid var(--line);margin-top:56px;padding:40px 0 34px;color:var(--mut);font-size:.9rem;background:#0b0b0f}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap} .ft nav{display:flex;gap:18px;flex-wrap:wrap} .ft nav a:hover{color:var(--accent)}
@media(max-width:900px){
  .g3,.g2,.split,.herowrap{grid-template-columns:1fr}
  .heroart{display:none}
  .nav-toggle{display:block}
  nav.main{position:fixed;top:66px;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;padding:18px 26px;gap:16px;border-bottom:1px solid var(--line);display:none}
  nav.main.open{display:flex}
  .phead{padding:38px 0 24px} .hero{padding:48px 0 42px}
}