:root {
  --brand: #5b5bf7;
  --brand-2: #7c3aed;
  --ink: #16182b;
  --ink-2: #5b6078;
  --line: #e6e8f2;
  --bg: #ffffff;
  --bg-soft: #f6f7fd;
  --ok: #12a150;
  --warn: #d97706;
  --shadow: 0 10px 30px rgba(23, 26, 60, .08);
  --radius: 14px;
  --max: 1180px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* 顶部导航 */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 26px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; display: grid; place-items: center; font-size: 15px;
}
.nav-links { display: flex; gap: 22px; font-size: 15px; color: var(--ink-2); }
.nav-links a:hover, .nav-links a.is-active { color: var(--brand); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px; font-size: 15px; font-weight: 600;
  border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; border-color: transparent;
}
.btn-ghost { background: rgba(91, 91, 247, .08); color: var(--brand); border-color: transparent; }
.btn-lg { padding: 14px 26px; font-size: 16px; border-radius: 12px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 420px at 12% 8%, rgba(91, 91, 247, .16), transparent 60%),
    radial-gradient(900px 380px at 85% 12%, rgba(124, 58, 237, .14), transparent 60%),
    var(--bg-soft);
  padding: 74px 0 58px;
}
.hero h1 { font-size: 44px; line-height: 1.25; margin: 0 0 16px; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero p.lead { font-size: 18px; color: var(--ink-2); margin: 0 0 28px; max-width: 620px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 26px; }
.chip {
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; font-size: 13px; color: var(--ink-2); box-shadow: var(--shadow);
}
.hero-frame {
  margin-top: 44px; border-radius: 18px; overflow: hidden; box-shadow: var(--shadow);
  border: 1px solid var(--line); background: #fff; min-height: 220px;
  display: grid; place-items: center; color: var(--ink-2); font-size: 14px;
}

/* 通用区块 */
.section { padding: 62px 0; }
.section.soft { background: var(--bg-soft); }
.section h2 { font-size: 30px; margin: 0 0 10px; }
.section .sub { color: var(--ink-2); margin: 0 0 34px; }
.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-2); font-size: 14px; }
.card .icon {
  width: 40px; height: 40px; border-radius: 11px; margin-bottom: 14px;
  display: grid; place-items: center; font-size: 19px;
  background: rgba(91, 91, 247, .12);
}

/* 底部横幅 + 页脚 */
.banner {
  padding: 58px 0; color: #fff; text-align: center;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
}
.banner h2 { margin: 0 0 10px; font-size: 30px; }
.banner p { margin: 0 0 22px; opacity: .92; }
.footer { background: #12142a; color: #c9cbe0; padding: 40px 0; font-size: 14px; }
.footer .container { display: flex; gap: 30px; flex-wrap: wrap; justify-content: space-between; }
.footer a { color: #e6e8f2; }
.footer .muted { color: #8b8fab; }

/* 表单与状态 */
.field { display: block; margin-bottom: 14px; }
.field span { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 10px; font-size: 15px; font-family: inherit; background: #fff;
}
.field input:focus { outline: 2px solid rgba(91, 91, 247, .25); border-color: var(--brand); }
.alert { padding: 10px 14px; border-radius: 10px; font-size: 14px; margin-bottom: 14px; }
.alert.error { background: #fdecec; color: #b42318; }
.alert.ok { background: #e8f7ee; color: var(--ok); }
.empty { padding: 34px; text-align: center; color: var(--ink-2); font-size: 14px; }
.loading { padding: 34px; text-align: center; color: var(--ink-2); font-size: 14px; }

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .nav-inner { gap: 14px; flex-wrap: wrap; }
  .nav-links { gap: 14px; font-size: 14px; }
}
@media (max-width: 420px) {
  .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 46px 0 36px; }
}

/* ── 工具类（CSP `style-src 'self'` 禁止内联 style，原 style 属性统一收在这里）── */
.u-mt12 { margin-top: 12px; }
.u-mt16 { margin-top: 16px; }
.u-mt18 { margin-top: 18px; }
.u-mt20 { margin-top: 20px; }
.u-mt24 { margin-top: 24px; }
.u-h1-36 { font-size: 36px; }
.u-pt24 { padding-top: 24px; }
.u-pt28 { padding-top: 28px; }
.u-hero-pad { padding: 52px 0 40px; }
.u-brand { color: var(--brand); }
.u-norm { font-style: normal; }
.u-w100 { width: 100%; }
.u-hint { font-size: 12px; color: #8b8fab; }
.u-card-center { padding: 34px; text-align: center; }
.u-lead { font-size: 17px; color: #16182b; margin-bottom: 6px; }
.u-small { font-size: 13px; }
.u-badge-white { background: #fff; color: #5b5bf7; }

/* ── 各页原先的内联 <style>（搬到外部文件以满足 CSP）── */
/* ── cli.html ── */
pre {
  background: #12142a; color: #e6e8f2; padding: 14px 16px; border-radius: 12px;
  overflow-x: auto; font-size: 13px; line-height: 1.7;
}
code { font-family: "JetBrains Mono", Consolas, monospace; }

/* ── login.html ── */
.auth-wrap { max-width: 420px; margin: 64px auto 80px; padding: 0 20px; }
.auth-wrap h1 { font-size: 26px; margin: 0 0 6px; }
.auth-wrap .sub { color: var(--ink-2); margin: 0 0 24px; font-size: 14px; }

/* ── register.html ── */
.auth-wrap { max-width: 440px; margin: 60px auto 80px; padding: 0 20px; }
.auth-wrap h1 { font-size: 26px; margin: 0 0 6px; }
.auth-wrap .sub { color: var(--ink-2); margin: 0 0 22px; font-size: 14px; }

/* ── vip.html ── */
.plan { display: flex; flex-direction: column; gap: 10px; }
.plan .price { font-size: 30px; font-weight: 700; }
.plan .price small { font-size: 14px; color: var(--ink-2); font-weight: 400; }
.plan ul { margin: 6px 0 0; padding-left: 18px; color: var(--ink-2); font-size: 14px; }
.plugin { display: flex; gap: 12px; align-items: flex-start; }
.plugin .tag { font-size: 12px; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.tag-free { background: #e8f7ee; color: var(--ok); }
.tag-paid { background: rgba(91, 91, 247, .12); color: var(--brand); }

/* ── 注册短信验证码 ── */
.field-inline { display: flex; gap: 8px; align-items: center; }
.field-inline input { flex: 1; min-width: 0; }
.field-inline .btn { white-space: nowrap; }