:root {
  --bg: #12151b; --panel: #1a1e26; --panel2: #222732; --line: #2c3340;
  --text: #dde3ec; --dim: #8b93a1; --acc: #4fc3f7; --acc2: #e91e63; --ok: #66bb6a;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.75 "Microsoft YaHei UI", "Segoe UI", sans-serif;
}
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: #0e1116; border: 1px solid var(--line); border-radius: 4px;
  padding: 1px 6px; font-family: Consolas, monospace; font-size: 13px; color: #9fd8f7;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.nav { position: sticky; top: 0; background: rgba(18,21,27,.92); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); z-index: 9; }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.logo { background: var(--acc); color: #0b1015; border-radius: 6px; padding: 2px 8px; font-weight: 800; }
.links { display: flex; gap: 16px; font-size: 13px; flex-wrap: wrap; }
.links a { color: var(--dim); }
.links a:hover { color: var(--text); }

.hero { padding: 72px 0 56px; background: radial-gradient(1200px 400px at 70% -10%, #17303f 0%, transparent 60%); }
.hero-in { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.pill { display: inline-block; border: 1px solid var(--acc); color: var(--acc); border-radius: 999px; padding: 2px 14px; font-size: 12px; margin-bottom: 18px; }
h1 { font-size: 44px; line-height: 1.2; margin: 0 0 16px; }
.grad { background: linear-gradient(90deg, var(--acc), #a78bfa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { color: var(--dim); font-size: 17px; }
.cta { display: flex; gap: 12px; margin: 24px 0 10px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 10px 22px; border-radius: 8px; font-size: 14px; cursor: pointer; }
.btn.primary { background: var(--acc); color: #0b1015; font-weight: 700; }
.btn.primary:hover { filter: brightness(1.1); text-decoration: none; }
.btn.ghost { border: 1px solid var(--line); color: var(--text); }
.btn.ghost:hover { border-color: var(--acc); text-decoration: none; }
.fine { color: var(--dim); font-size: 12px; }
.hero-art { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 22px; min-height: 220px; }
.cap { color: var(--dim); font-size: 13px; }

.notice { padding: 18px 0; }
.notice-in { display: flex; gap: 14px; background: #2a2415; border: 1px solid #6b5a1e; border-radius: 10px; padding: 16px 20px; }
.notice.warn .notice-in { background: #2a1a17; border-color: #6b2e1e; }
.notice-ico { width: 30px; height: 30px; flex: 0 0 30px; border-radius: 50%; background: #ffb300; color: #201500; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.notice p { margin: 4px 0 0; color: var(--text); font-size: 14px; }
.notice.inline { margin: 18px 0; }

.section { padding: 48px 0; border-top: 1px solid var(--line); }
.s-head h2 { font-size: 28px; margin: 0 0 4px; }
.s-head p { color: var(--dim); margin: 0 0 26px; }

.flowsteps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 26px; }
.fs { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.fs-n { display: inline-flex; width: 24px; height: 24px; border-radius: 50%; background: var(--acc); color: #0b1015; align-items: center; justify-content: center; font-weight: 800; margin-right: 8px; font-size: 13px; }
.fs b { font-size: 14px; }
.fs i { display: block; color: var(--dim); font-style: normal; font-size: 13px; margin-top: 4px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.card h3 { margin: 0 0 8px; font-size: 16px; }
.card p { margin: 0; color: var(--dim); font-size: 14px; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; }
.step h3 { margin: 0 0 8px; font-size: 15px; color: var(--acc); }
.step p { margin: 0; font-size: 14px; color: var(--text); }

.callout { background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--acc); border-radius: 10px; padding: 16px 20px; }
.callout p { margin: 0 0 10px; font-size: 14px; }
.ticks { margin: 0; padding-left: 18px; font-size: 14px; color: var(--text); }
.ticks li { margin: 6px 0; }

.tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); }
th { color: var(--dim); font-weight: 600; }

.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 18px; margin: 8px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--dim); font-size: 14px; }

.dlbox { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 22px; font-size: 15px; }
#dl-meta { margin-bottom: 14px; color: var(--text); }

.foot { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--dim); font-size: 13px; }

@media (max-width: 860px) {
  .hero-in { grid-template-columns: 1fr; }
  h1 { font-size: 34px; }
  .links { display: none; }
}