:root {
  --paper: #f4f4f1;
  --card: #ffffff;
  --ink: #15171a;
  --ink-2: #4a4d52;
  --ink-3: #83878d;
  --line: #dedbd2;
  --line-strong: #c9c5b9;
  --red: #b3202a;
  --green: #2f6f4a;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }

.wrap { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }
.narrow { width: min(680px, calc(100% - 48px)); }
.pad { padding: 56px 0 90px; }
.pad-t { padding-top: 34px; }
.center { text-align: center; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
.hint { font-size: 13px; color: var(--ink-3); line-height: 1.6; }

.kicker {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--ink-3);
  text-transform: uppercase;
}

/* ---------------- 顶栏 ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(244, 244, 241, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.bar { display: flex; align-items: center; gap: 32px; height: 66px; }
.brand { display: flex; align-items: baseline; gap: 10px; flex: none; }
.brand-cn { font-size: 19px; font-weight: 800; letter-spacing: .06em; }
.brand-en { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; color: var(--ink-3); }
.nav { display: flex; gap: 26px; margin-left: auto; font-size: 14.5px; color: var(--ink-2); }
.nav a:hover, .nav a.on { color: var(--ink); }
.nav a.on { font-weight: 600; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 46px; padding: 0 22px;
  border: 1px solid var(--ink); border-radius: 2px;
  background: transparent; color: var(--ink);
  font-size: 15px; font-weight: 600;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.btn.solid { background: var(--ink); color: #f7f6f2; }
.btn.solid:hover { background: #000; }
.btn.ghost:hover { border-color: var(--ink); background: #fff; }
.btn.sm { height: 36px; padding: 0 14px; font-size: 13.5px; }
.btn.block { width: 100%; display: flex; }
.btn[disabled] { opacity: .4; cursor: not-allowed; }

/* ---------------- 通用排版 ---------------- */
.h-page {
  font-size: clamp(1.7rem, 3.4vw, 2.35rem);
  line-height: 1.24;
  letter-spacing: -.02em;
  font-weight: 800;
  margin: 10px 0 14px;
}
.lede { font-size: 16.5px; color: var(--ink-2); max-width: 62ch; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 4px; }
.alert {
  border: 1px solid #e3c4c1;
  background: #fdf4f3;
  color: #8f1f26;
  padding: 12px 16px;
  border-radius: 3px;
  font-size: 14.5px;
  margin: 18px 0;
}
.alert.ok { border-color: #c5d8c9; background: #f2f8f3; color: #245c3b; }

/* ---------------- 落地页 ---------------- */
.hero { padding: 74px 0 84px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: 60px;
  align-items: start;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: -.035em;
  font-weight: 800;
}
.hero h1 .hl {
  background: linear-gradient(transparent 66%, #f6d9d6 66%, #f6d9d6 92%, transparent 92%);
}
.hero .lede { margin-top: 24px; font-size: 16.5px; line-height: 1.72; }
.hero-cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.hero-note {
  margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line);
  font-size: 13.5px; color: var(--ink-3);
  display: flex; gap: 22px; flex-wrap: wrap;
}
.hero-note b { color: var(--ink-2); font-weight: 600; }

/* 手机样机 */
.phone-wrap { position: relative; padding-top: 6px; }
.phone {
  width: 100%; max-width: 322px; margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  padding: 20px 18px 18px;
  box-shadow: 0 1px 0 #fff inset, 0 18px 40px -28px rgba(21, 23, 26, .55);
}
.phone-bar {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: 10px; color: var(--ink-3);
  margin-bottom: 12px;
}
.phone-co { font-size: 12.5px; font-weight: 700; color: var(--ink-2); }
.phone-t { font-size: 19px; font-weight: 800; letter-spacing: -.02em; line-height: 1.3; margin-bottom: 14px; }
.phone-f { margin-bottom: 10px; }
.phone-l { display: block; font-size: 11.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 4px; }
.phone-i {
  height: 34px; border: 1px solid var(--line); border-radius: 3px; background: #fbfbf9;
  display: flex; align-items: center; padding: 0 10px;
  font-size: 12.5px; color: var(--ink-3);
}
.phone-i.sel::after { content: "▾"; margin-left: auto; font-size: 10px; color: var(--ink-3); }
.phone-btn {
  margin-top: 14px; height: 40px; border-radius: 3px; background: var(--ink);
  color: #f7f6f2; display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600;
}
.phone-by { text-align: center; font-size: 10px; color: var(--ink-3); margin-top: 12px; }

/* 流程 */
.sec { padding: 58px 0; border-top: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 34px; }
.sec-head .idx { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); letter-spacing: .1em; }
.sec-head h2 { font-size: clamp(1.4rem, 2.6vw, 1.95rem); letter-spacing: -.02em; font-weight: 800; }
.sec-head .note { margin-left: auto; font-size: 13px; color: var(--ink-3); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.step { padding: 26px 26px 8px 0; border-right: 1px solid var(--line); }
.step + .step { padding-left: 26px; }
.step:last-child { border-right: 0; padding-right: 0; }
.step .n { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }
.step h3 { font-size: 17.5px; font-weight: 700; margin: 8px 0 8px; letter-spacing: -.01em; }
.step p { font-size: 14.5px; color: var(--ink-2); line-height: 1.66; }

/* 后台预览 */
.admin-mock { border: 1px solid var(--line); background: #fff; border-radius: 4px; overflow: hidden; }
.admin-mock-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--line); background: #fbfbf8;
}
.admin-mock-top .t { font-size: 13px; font-weight: 700; }
.admin-mock-top .s { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.admin-mock table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-mock th {
  text-align: left; font-weight: 600; font-size: 11.5px; color: var(--ink-3);
  padding: 10px 14px; border-bottom: 1px solid var(--line); background: #fcfcfa;
  font-family: var(--mono); letter-spacing: .04em;
}
.admin-mock td { padding: 11px 14px; border-bottom: 1px solid #eeece5; color: var(--ink-2); }
.admin-mock tr:last-child td { border-bottom: 0; }
.admin-mock td.mono { color: var(--ink-3); font-size: 12px; }

/* 对比 */
.vs { width: 100%; border-collapse: collapse; font-size: 15px; }
.vs th, .vs td { padding: 15px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.vs th { font-size: 12px; font-weight: 600; color: var(--ink-3); font-family: var(--mono); letter-spacing: .05em; }
.vs td:first-child { font-weight: 600; width: 26%; }
.vs .yes { color: var(--green); font-weight: 600; }
.vs .no { color: var(--ink-3); }
.vs tr.best td { background: #fbfbf8; }

/* 价格 */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.plan { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 28px 26px; display: flex; flex-direction: column; }
.plan.pro { border-color: var(--ink); }
.plan-n { font-size: 14px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.plan-p { font-size: 40px; font-weight: 800; letter-spacing: -.03em; margin: 10px 0 18px; }
.plan-p small { font-size: 14px; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.plan-f { flex: 1; margin-bottom: 24px; }
.plan-f li { font-size: 14.5px; color: var(--ink-2); padding: 7px 0 7px 22px; position: relative; }
.plan-f li::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }
.tag { font-size: 11px; font-weight: 600; color: var(--red); border: 1px solid #e3c4c1; padding: 1px 7px; border-radius: 99px; letter-spacing: .02em; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative;
  font-size: 16px; font-weight: 600; letter-spacing: -.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 18px; color: var(--ink-3); font-size: 19px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq p { padding: 0 40px 22px 0; color: var(--ink-2); font-size: 15px; max-width: 70ch; }

/* 收尾 */
.closer { padding: 70px 0 84px; border-top: 1px solid var(--line); }
.closer h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; letter-spacing: -.025em; line-height: 1.28; }
.closer p { color: var(--ink-2); margin-top: 14px; }
.closer .btn { margin-top: 28px; }

/* ---------------- 表单页（创建） ---------------- */
.form-big { padding: 28px 26px; margin-top: 26px; }
.f { display: block; margin-bottom: 20px; border: 0; padding: 0; }
.f-label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 7px; }
.f-label i { color: var(--red); font-style: normal; }
.f input[type=text], .f input[type=tel], .f select, .f textarea {
  width: 100%; border: 1px solid var(--line-strong); border-radius: 3px;
  background: #fdfdfb; padding: 11px 13px; font-size: 15px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.f input:focus, .f select:focus, .f textarea:focus {
  border-color: var(--ink); box-shadow: 0 0 0 3px rgba(21, 23, 26, .07); background: #fff;
}
.f textarea { resize: vertical; min-height: 78px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line-strong); border-radius: 3px; padding: 7px 12px;
  font-size: 13.5px; color: var(--ink-2); cursor: pointer; background: #fdfdfb;
  user-select: none;
}
.chip input { width: 14px; height: 14px; accent-color: var(--ink); margin: 0; }
.chip:has(input:checked) { border-color: var(--ink); color: var(--ink); background: #fff; }

/* ---------------- 公开报名页 ---------------- */
.pub-body { background: #eceae4; display: flex; align-items: flex-start; justify-content: center; padding: 0 14px 40px; min-height: 100vh; }
.pub { width: 100%; max-width: 460px; padding-top: 18px; }
.pub-card { background: #fff; border-radius: 6px; padding: 26px 22px 20px; border: 1px solid #e2dfd6; }
.pub-card.center { text-align: center; padding: 40px 24px 26px; }
.pub-head { padding-bottom: 16px; border-bottom: 1px solid #eceae4; margin-bottom: 20px; }
.pub-co { font-size: 12.5px; font-weight: 600; color: var(--ink-3); letter-spacing: .04em; }
.pub-title { font-size: 21px; font-weight: 800; letter-spacing: -.02em; line-height: 1.34; margin-top: 6px; }
.done-t { margin-top: 4px; }
.pub-note { padding: 24px 0; color: var(--ink-2); font-size: 15px; }
.pub-agree { font-size: 11.5px; color: var(--ink-3); text-align: center; margin: 4px 0 14px; }
.pub-by { text-align: center; font-size: 11px; color: #a9a69c; margin-top: 16px; }
.pub-by a { text-decoration: underline; text-underline-offset: 2px; }
.tick {
  width: 46px; height: 46px; margin: 0 auto 16px; border-radius: 50%;
  border: 1.5px solid var(--green); color: var(--green); font-size: 22px;
  display: flex; align-items: center; justify-content: center;
}
.pub .alert { margin: 0 0 16px; }

/* ---------------- 后台 ---------------- */
.admin-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.stat { text-align: right; flex: none; }
.stat b { display: block; font-family: var(--mono); font-size: 34px; font-weight: 700; letter-spacing: -.03em; line-height: 1; }
.stat span { font-size: 12.5px; color: var(--ink-3); }
.share { display: flex; align-items: center; gap: 18px; padding: 16px 20px; margin-bottom: 18px; }
.share-l { min-width: 0; flex: 1; }
.share-l .f-label { margin-bottom: 4px; }
.share-l code { font-size: 14px; color: var(--ink); word-break: break-all; }
.share-r { display: flex; gap: 8px; flex: none; }
.table-card { overflow: hidden; margin-bottom: 18px; }
.table-scroll { overflow-x: auto; }
.leads { width: 100%; border-collapse: collapse; font-size: 14px; }
.leads th {
  text-align: left; font-size: 11.5px; font-family: var(--mono); letter-spacing: .05em;
  color: var(--ink-3); font-weight: 600; padding: 12px 16px; border-bottom: 1px solid var(--line);
  background: #fbfbf8; white-space: nowrap;
}
.leads td { padding: 13px 16px; border-bottom: 1px solid #eeeee8; color: var(--ink-2); }
.leads tbody tr:last-child td { border-bottom: 0; }
.leads td.mono { color: var(--ink-3); font-size: 12.5px; }
.leads tbody tr:hover td { background: #fcfcfa; }
.empty { padding: 54px 24px; text-align: center; color: var(--ink-2); }
.empty p:first-child { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.admin-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

/* ---------------- 页脚 ---------------- */
.foot { border-top: 1px solid var(--line); margin-top: 0; }
.foot-in {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  padding: 26px 0 34px; font-size: 12.5px; color: var(--ink-3);
}
.foot-in a:hover { color: var(--ink); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .phone-wrap { order: 2; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; border-bottom: 1px solid var(--line); padding: 22px 0; }
  .step + .step { padding-left: 0; }
  .step:last-child { border-bottom: 0; }
  .plans { grid-template-columns: 1fr; }
  .sec-head .note { display: none; }
  .nav { display: none; }
  .bar { gap: 16px; }
  .bar > .btn { margin-left: auto; }
}
@media (max-width: 640px) {
  .wrap, .narrow { width: calc(100% - 36px); }
  .hero { padding: 46px 0 56px; }
  .hero .lede { font-size: 15.5px; }
  .hero-cta .btn { flex: 1; }
  .sec { padding: 44px 0; }
  .admin-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .stat { text-align: left; }
  .share { flex-direction: column; align-items: stretch; }
  .admin-mock { overflow-x: auto; }
  .admin-mock table { font-size: 12.5px; table-layout: fixed; }
  .admin-mock th, .admin-mock td { padding: 9px 8px; }
  .admin-mock th:nth-child(5), .admin-mock td:nth-child(5),
  .admin-mock th:nth-child(6), .admin-mock td:nth-child(6),
  .admin-mock th:nth-child(7), .admin-mock td:nth-child(7) { display: none; }
  .admin-mock th:nth-child(1), .admin-mock td:nth-child(1) { width: 26px; }
  .admin-mock th:nth-child(2), .admin-mock td:nth-child(2) { width: 100px; font-size: 11.5px; }
  .admin-mock th:nth-child(3), .admin-mock td:nth-child(3) { width: 62px; }

  /* 对比表在窄屏改成一行一卡 */
  .vs thead { display: none; }
  .vs, .vs tbody, .vs tr, .vs td { display: block; width: 100%; }
  .vs tr { border-bottom: 1px solid var(--line); padding: 13px 0; }
  .vs tr.best, .vs tr.best td { background: transparent; }
  .vs td { border: 0; padding: 3px 0; font-size: 14px; }
  .vs td:first-child { font-weight: 700; color: var(--ink); margin-bottom: 4px; }
  .vs td:not(:first-child)::before { color: var(--ink-3); font-size: 12px; }
  .vs td:nth-child(2)::before { content: "微信群接龙："; }
  .vs td:nth-child(3)::before { content: "纸质登记本："; }
  .vs td:nth-child(4)::before { content: "招徕："; }
  .vs td:nth-child(4) { color: var(--green); font-weight: 600; }
}