/* 小智哥 PMS 落地页样式 */
:root {
  --brand: #409eff;
  --brand-dark: #2b7fe0;
  --brand-soft: #e8f3ff;
  --ink: #1f2d3d;
  --ink-2: #4b5b6b;
  --ink-3: #7b8a99;
  --line: #e4e7ed;
  --bg: #ffffff;
  --bg-soft: #f7f9fc;
  --gold: #f5a623;
  --green: #22a06b;
  --red: #e5533d;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(31, 45, 61, .06), 0 1px 2px rgba(31, 45, 61, .04);
  --shadow-md: 0 6px 24px rgba(31, 45, 61, .08);
  --shadow-lg: 0 18px 48px rgba(31, 45, 61, .12);
  --max: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 16px; font-weight: 700; }
h1 { font-size: 40px; letter-spacing: -.5px; }
h2 { font-size: 30px; letter-spacing: -.3px; }
h3 { font-size: 20px; }
p { margin: 0 0 16px; }
a { color: var(--brand-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; height: auto; }
ul { margin: 0 0 16px; padding-left: 20px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 76px 0; }
.soft { background: var(--bg-soft); }
.center { text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--brand-dark);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.lead { font-size: 18px; color: var(--ink-2); max-width: 760px; }
.lead.center { margin: 0 auto; }

/* ---------- 顶栏 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 28px; height: 62px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 18px; color: var(--ink); }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), #6cb8ff);
  display: grid; place-items: center; color: #fff; font-size: 15px;
}
.nav-links { margin-left: auto; display: flex; gap: 26px; }
.nav-links a { color: var(--ink-2); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--brand-dark); text-decoration: none; }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-toggle { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 8px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: .18s; white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 4px 14px rgba(64, 158, 255, .32); }
.btn-primary:hover { background: var(--brand-dark); text-decoration: none; transform: translateY(-1px); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dark); text-decoration: none; }
.btn-lg { padding: 15px 34px; font-size: 17px; }
.btn-full { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding: 84px 0 76px;
  background:
    radial-gradient(1000px 460px at 12% -8%, #e8f3ff 0%, rgba(232, 243, 255, 0) 62%),
    radial-gradient(760px 380px at 92% 4%, #fff4e2 0%, rgba(255, 244, 226, 0) 60%);
}
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 52px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--brand-dark); }
.hero .sub { font-size: 19px; color: var(--ink-2); margin: 18px 0 28px; max-width: 560px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-trust { display: flex; gap: 26px; flex-wrap: wrap; font-size: 14px; color: var(--ink-3); }
.hero-trust b { color: var(--ink); font-size: 17px; display: block; font-weight: 700; }

.hero-shot {
  border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg);
  border: 1px solid var(--line); background: #fff;
}
.hero-shot svg { display: block; }

/* ---------- 痛点 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 38px; }
.pain {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; box-shadow: var(--shadow-sm);
}
.pain-t { display: flex; align-items: center; gap: 10px; font-weight: 700; margin-bottom: 8px; }
.pain-x {
  width: 24px; height: 24px; flex: none; border-radius: 50%;
  background: #fdeceb; color: var(--red); display: grid; place-items: center;
  font-size: 14px; font-weight: 700;
}
.pain p { margin: 0; font-size: 15px; color: var(--ink-2); }

/* ---------- 通用卡片网格 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow-sm); transition: .2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card h3 { margin-bottom: 10px; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.ico {
  width: 44px; height: 44px; border-radius: 10px; margin-bottom: 14px;
  display: grid; place-items: center; font-size: 21px; background: var(--brand-soft);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.tag {
  font-size: 12px; color: var(--ink-2); background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 20px; padding: 3px 11px;
}

/* ---------- AI 区 ---------- */
.ai-wrap {
  background: linear-gradient(160deg, #16222f 0%, #1f3550 58%, #204a6b 100%);
  color: #e7eef6; border-radius: 20px; padding: 52px; position: relative; overflow: hidden;
}
.ai-wrap::after {
  content: ''; position: absolute; right: -80px; top: -80px; width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(64, 158, 255, .34), transparent 68%);
}
.ai-wrap h2, .ai-wrap h3 { color: #fff; }
.ai-wrap .lead { color: #b8cadb; }
.ai-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 34px; position: relative; }
.ai-card {
  background: rgba(255, 255, 255, .055); border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 14px; padding: 24px; backdrop-filter: blur(4px);
}
.ai-card h3 { font-size: 18px; margin-bottom: 8px; display: flex; align-items: center; gap: 9px; }
.ai-card p { color: #b8cadb; font-size: 15px; margin-bottom: 12px; }
.ai-card ul { margin: 0; padding-left: 18px; color: #cfdcea; font-size: 14px; }
.ai-card li { margin-bottom: 4px; }
.formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px;
  background: rgba(0, 0, 0, .3); border-radius: 7px; padding: 10px 12px;
  color: #8fd0ff; word-break: break-all; margin-top: 12px;
}
.ai-note {
  margin-top: 26px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .13);
  color: #9fb3c8; font-size: 14.5px; position: relative;
}

/* ---------- 对话演示 ---------- */
.chat-demo {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-md); overflow: hidden;
}
.chat-hd {
  padding: 13px 18px; border-bottom: 1px solid var(--line); background: var(--bg-soft);
  font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 9px;
}
.chat-bd { padding: 20px; background: #fbfcfe; }
.bub { max-width: 84%; padding: 11px 15px; border-radius: 12px; font-size: 14.5px; margin-bottom: 11px; line-height: 1.6; }
.bub-me { background: var(--brand); color: #fff; margin-left: auto; border-bottom-right-radius: 4px; }
.bub-ai { background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.bub b { font-weight: 700; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.chip {
  font-size: 12px; background: var(--brand-soft); color: var(--brand-dark);
  border-radius: 14px; padding: 3px 10px;
}
.rcard {
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 13px; margin-top: 9px;
  background: #fff; display: flex; gap: 12px; align-items: center;
}
.rcard-main { flex: 1; min-width: 0; }
.rcard-nm { font-weight: 700; font-size: 14.5px; }
.rcard-sub { font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }
.rcard-pr { text-align: right; flex: none; }
.rcard-pr b { color: var(--red); font-size: 16px; }
.rcard-score { font-size: 11.5px; color: var(--gold); }

/* ---------- 表格 ---------- */
.tbl-scroll { overflow-x: auto; margin-top: 32px; }
table.cmp { width: 100%; border-collapse: collapse; background: #fff; min-width: 620px; }
table.cmp th, table.cmp td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
table.cmp thead th { background: var(--ink); color: #fff; font-weight: 600; font-size: 14px; }
table.cmp thead th.us { background: var(--brand-dark); }
table.cmp tbody td.us { background: #f5faff; font-weight: 600; color: var(--ink); }
table.cmp tbody tr:last-child td { border-bottom: none; }
table.cmp th:first-child, table.cmp td:first-child { border-radius: 0; }
.yes { color: var(--green); font-weight: 700; }
.no { color: var(--ink-3); }

/* ---------- 步骤 ---------- */
.steps { counter-reset: s; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 34px; }
.step { position: relative; padding-top: 8px; }
.step::before {
  counter-increment: s; content: counter(s);
  width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 15px; margin-bottom: 12px;
}
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 15px; color: var(--ink-2); margin: 0; }
pre.code {
  background: #16222f; color: #cfe3f7; padding: 14px 16px; border-radius: 9px;
  font-size: 13px; overflow-x: auto; margin: 10px 0 0; line-height: 1.65;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 数据清单（逐行：名称 / 数据表名 / 说明） ---------- */
.data-list { list-style: none; padding: 0; margin: 18px 0 0; }
.data-list li {
  display: flex; align-items: baseline; gap: 12px; padding: 11px 0;
  border-bottom: 1px dashed var(--line); font-size: 14.5px; color: var(--ink-2);
}
.data-list li:last-child { border-bottom: none; }
.data-list b { color: var(--ink); flex: none; width: 88px; font-weight: 600; }
.data-list code {
  flex: none; font-size: 12px; background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 7px; color: var(--brand-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.data-list span { flex: 1; min-width: 0; }

/* 竖向堆叠的 who-item */
.who-stack .who-item + .who-item { margin-top: 14px; }

/* ---------- 适用对象 ---------- */
.who-item {
  display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px;
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
}
.who-i { font-size: 24px; line-height: 1; }
.who-item h3 { font-size: 16px; margin: 0 0 4px; }
.who-item p { margin: 0; font-size: 14px; color: var(--ink-2); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 34px auto 0; }
details.faq-i {
  border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px;
  background: #fff; overflow: hidden;
}
details.faq-i summary {
  padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 16.5px;
  list-style: none; display: flex; align-items: center; gap: 12px;
}
details.faq-i summary::-webkit-details-marker { display: none; }
details.faq-i summary::after {
  content: '+'; margin-left: auto; color: var(--brand); font-size: 22px; font-weight: 400; line-height: 1;
}
details.faq-i[open] summary::after { content: '\2212'; }
details.faq-i[open] summary { border-bottom: 1px solid var(--line); }
.faq-a { padding: 18px 22px; color: var(--ink-2); font-size: 15.5px; }
.faq-a > :last-child { margin-bottom: 0; }

/* ---------- 表单 ---------- */
.form-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start;
  background: linear-gradient(135deg, #f5faff, #eef6ff);
  border: 1px solid #dbeafe; border-radius: 20px; padding: 48px;
}
.form-box { background: #fff; border-radius: 14px; padding: 28px; box-shadow: var(--shadow-md); }
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(64, 158, 255, .13);
}
.field textarea { resize: vertical; min-height: 78px; }
.form-note { font-size: 13px; color: var(--ink-3); margin-top: 12px; }
.form-msg { font-size: 14.5px; margin-top: 12px; display: none; }
.form-msg.ok { display: block; color: var(--green); }
.form-msg.err { display: block; color: var(--red); }
.contact-list { list-style: none; padding: 0; margin: 22px 0 0; }
.contact-list li { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; color: var(--ink-2); }
.contact-list .ci {
  width: 38px; height: 38px; flex: none; border-radius: 9px; background: #fff;
  border: 1px solid var(--line); display: grid; place-items: center; font-size: 17px;
}
.contact-list b { color: var(--ink); display: block; font-size: 15px; }
.contact-list span { font-size: 13.5px; }

/* ---------- 页脚 ---------- */
footer.site { background: var(--ink); color: #9fb0c2; padding: 52px 0 28px; font-size: 14.5px; }
footer.site h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; }
footer.site a { color: #9fb0c2; }
footer.site a:hover { color: #fff; }
footer.site ul { list-style: none; padding: 0; margin: 0; }
footer.site li { margin-bottom: 8px; }
.foot-bot {
  margin-top: 38px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13.5px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  h1 { font-size: 33px; } h2 { font-size: 26px; }
  .hero-grid, .form-wrap { grid-template-columns: 1fr; gap: 34px; }
  .hero-shot { order: -1; }
  .grid-3, .grid-4, .pain-grid, .steps, .foot-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid, .grid-2 { grid-template-columns: 1fr; }
  .ai-wrap { padding: 34px 26px; }
  .form-wrap { padding: 30px 24px; }
  section { padding: 56px 0; }
}
@media (max-width: 640px) {
  h1 { font-size: 27px; } h2 { font-size: 23px; }
  .wrap { padding: 0 18px; }
  .grid-3, .grid-4, .pain-grid, .steps, .foot-grid { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 62px; flex-direction: column;
    background: #fff; padding: 14px 20px; gap: 14px; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle {
    display: grid; place-items: center; width: 38px; height: 38px;
    margin-left: auto; border: 1px solid var(--line); border-radius: 8px; background: #fff; font-size: 17px;
  }
  .nav-cta { display: none; }
  .hero { padding: 52px 0; }
  .hero-btns .btn { width: 100%; }
  .data-list li { flex-wrap: wrap; row-gap: 4px; }
  .data-list span { flex-basis: 100%; padding-left: 62px; }
}