:root {
  --bg: #f5f7fd;
  --ink: #282b37;
  --muted: #6f7482;
  --line: #d9deeb;
  --card: #fff;
  --primary: #4358d8;
  --primary-dark: #3549c0;
  --soft: #eef1f8;
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body { margin: 0; min-height: 100vh; background: var(--bg); }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.page {
  min-height: 100vh;
  padding: 28px 20px;
  background:
    radial-gradient(circle at 28% 4%, rgba(155, 172, 239, .28), transparent 33%),
    radial-gradient(circle at 73% 0%, rgba(180, 211, 242, .2), transparent 29%),
    var(--bg);
}

.shell { width: min(896px, 100%); margin: 0 auto; min-height: calc(100vh - 56px); display: flex; flex-direction: column; justify-content: center; }
.notice { display: none; margin: 0 0 20px; padding: 16px; border: 1px solid #cbd3f6; border-radius: 16px; background: #f0f2ff; gap: 14px; align-items: center; justify-content: space-between; }
.notice-copy { display: flex; align-items: flex-start; gap: 12px; }
.notice-copy strong { display: block; margin-bottom: 5px; }
.notice-copy p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.card { overflow: hidden; border: 1px solid rgba(205,211,226,.9); border-radius: 12px; background: rgba(255,255,255,.96); box-shadow: 0 28px 90px -44px rgba(48,61,150,.48); }
.hero { display: grid; grid-template-columns: .76fr 1.24fr; }
.title-panel { min-height: 400px; padding: 32px; display: flex; flex-direction: column; color: white; background: var(--primary); }
.eyebrow { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: rgba(255,255,255,.82); }
.shield { width: 20px; height: 20px; }
.main-title { margin: auto 0; font-size: clamp(54px,6vw,66px); font-weight: 800; line-height: 1.03; letter-spacing: -.03em; }
.main-title span { display: block; }

.content-panel { padding: 32px; text-align: left; }
.kicker { margin: 0; color: var(--primary); font-size: 12px; font-weight: 800; }
.content-panel h2 { margin: 12px 0 0; font-size: 24px; line-height: 1.5; letter-spacing: -.015em; }
.lead { margin: 16px 0 0; color: var(--muted); font-size: 14px; line-height: 2; }

.primary-btn { width: 100%; min-height: 52px; margin-top: 24px; padding: 0 20px; border: 0; border-radius: 8px; display: flex; align-items: center; justify-content: space-between; gap: 16px; color: white; background: var(--primary); box-shadow: 0 12px 28px -16px rgba(55,74,196,.8); text-decoration: none; font-weight: 800; cursor: pointer; transition: .18s ease; }
.primary-btn:hover { background: var(--primary-dark); }
.primary-btn:active { transform: translateY(1px); }
.btn-label { display: flex; align-items: center; gap: 9px; }
.btn-icon { width: 20px; height: 20px; }
.action-note { min-height: 24px; margin-top: 12px; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.link-btn { flex: 0 0 auto; padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 4px; }
.status-ok { color: var(--ink); }

.impact { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.7; }
.impact p { margin: 0 0 12px; display: flex; align-items: flex-start; gap: 10px; }
.impact p:last-child { margin-bottom: 0; color: var(--muted); }
.dot-check { color: var(--primary); font-weight: 900; }
.official { display: inline-flex; margin-top: 20px; color: var(--muted); font-size: 12px; text-underline-offset: 4px; }
.official:hover { color: var(--primary); }

.steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); background: rgba(238,241,248,.7); }
.steps li { min-height: 70px; padding: 16px 20px; display: grid; grid-template-columns: 36px 1fr; gap: 8px; border-right: 1px solid var(--line); font-size: 14px; }
.steps li:last-child { border-right: 0; }
.num { color: var(--primary); font-size: 12px; font-weight: 800; }
.step-copy { color: var(--muted); line-height: 1.65; }

.share-page { min-height: 100vh; background: var(--bg); }
.topbar { height: 56px; border-bottom: 1px solid rgba(40,43,55,.15); }
.topbar-inner { width: min(1024px,100%); height: 100%; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; }
.brand-mark { width: 10px; height: 10px; background: var(--primary); }
.top-meta { color: var(--muted); font-size: 12px; }
.share-shell { width: min(896px,100%); margin: 0 auto; padding: 40px 28px 64px; }
.back { display: inline-flex; align-items: center; gap: 8px; padding-bottom: 4px; border-bottom: 1px solid transparent; font-size: 14px; font-weight: 800; text-decoration: none; }
.back:hover { border-color: var(--ink); }
.share-intro { margin-top: 32px; padding-bottom: 28px; border-bottom: 1px solid rgba(40,43,55,.2); display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 32px; }
.share-intro h1 { margin: 16px 0 0; font-size: clamp(34px,5vw,56px); font-weight: 500; line-height: 1.1; letter-spacing: -.025em; }
.share-intro > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.9; }
.toolbox { margin-top: 20px; padding: 28px; border: 1px solid rgba(40,43,55,.2); background: var(--card); }
.share-main { min-height: 48px; margin: 0; justify-content: center; border-radius: 12px; }
.utility-grid { margin-top: 12px; display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.utility { min-height: 44px; padding: 0 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--ink); cursor: pointer; }
.utility:hover { background: var(--soft); }
.preview { margin-top: 20px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: rgba(238,241,248,.72); }
.preview strong { color: var(--muted); font-size: 12px; letter-spacing: .04em; }
.preview p { margin: 12px 0 0; white-space: pre-line; font-size: 14px; line-height: 2; }
.feedback { min-height: 24px; margin: 18px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.share-footnote { margin: 20px 0 0; padding-left: 16px; border-left: 4px solid var(--primary); color: var(--muted); font-size: 14px; line-height: 1.7; }

@media (max-width: 680px) {
  .page { padding: 20px 14px; }
  .shell { min-height: calc(100vh - 40px); }
  .hero { grid-template-columns: 1fr; }
  .title-panel { min-height: 250px; padding: 24px; }
  .main-title { margin: 34px 0 10px; font-size: 54px; }
  .content-panel { padding: 26px 24px; }
  .steps { grid-template-columns: 1fr; }
  .steps li { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .steps li:last-child { border-bottom: 0; }
  .notice { flex-direction: column; align-items: stretch; }
  .share-shell { padding: 28px 20px 48px; }
  .share-intro { grid-template-columns: 1fr; align-items: start; gap: 18px; }
  .toolbox { padding: 18px; }
  .utility-grid { grid-template-columns: 1fr; }
}