/* ==========================================================================
   君兰合规 · 官网样式
   定位：口腔诊所安全合规整体解决方案
   配色：蓝白为主，信任绿点缀
   ========================================================================== */

:root {
  /* 主色 */
  --blue-600: #1565d8;
  --blue-700: #0f4cbb;
  --blue-500: #2b7de9;
  --navy-900: #0b2447;
  --navy-800: #12315c;

  /* 中性色 */
  --ink-900: #101828;
  --ink-700: #344054;
  --ink-600: #475467;
  --ink-500: #667085;
  --ink-400: #98a2b3;

  /* 背景与线条 */
  --bg-page: #ffffff;
  --bg-soft: #f5f8ff;
  --bg-tint: #eef4ff;
  --line: #e4ebf5;
  --line-strong: #d3dded;

  /* 强调色 */
  --accent: #00a86b;      /* 信任绿 */
  --accent-soft: #e6f7f0;
  --amber: #f5a623;
  --amber-soft: #fef4e2;
  --red: #e11d48;

  /* 尺寸 */
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, .08);
  --shadow-lg: 0 20px 48px rgba(11, 36, 71, .14);
  --container: 1200px;
  --nav-h: 72px;
}

/* ------------------------------ Reset ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink-700);
  background: var(--bg-page);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-600); text-decoration: none; }
a:hover { color: var(--blue-700); }
h1, h2, h3, h4, h5 { color: var(--navy-900); line-height: 1.3; margin: 0; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ------------------------------ 通用工具 ------------------------------ */
.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section--tint { background: var(--bg-tint); }
.section--navy { background: var(--navy-900); color: #cbd7ea; }
.section--navy h2, .section--navy h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .08em;
  color: var(--blue-600); text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 20px; height: 2px; background: var(--blue-600); border-radius: 2px; }
.section-head.center .eyebrow::before { display: none; }
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head .lead { font-size: 17px; color: var(--ink-600); }

/* ------------------------------ 按钮 ------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-size: 16px; font-weight: 600;
  border: 1px solid transparent; transition: all .22s ease; white-space: nowrap;
}
.btn-primary { background: var(--blue-600); color: #fff; box-shadow: 0 8px 20px rgba(21, 101, 216, .28); }
.btn-primary:hover { background: var(--blue-700); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(21, 101, 216, .34); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(0, 168, 107, .28); }
.btn-accent:hover { background: #00915d; color: #fff; transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--navy-900); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--blue-600); color: var(--blue-600); }
.btn-white { background: #fff; color: var(--blue-700); }
.btn-white:hover { background: #eef4ff; color: var(--blue-700); transform: translateY(-2px); }
.btn-outline-white { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-outline-white:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.08); }
.btn-lg { padding: 16px 34px; font-size: 17px; }

/* ------------------------------ 顶部导航 ------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  background: rgba(255,255,255,.92); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.nav-inner { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; flex: none;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px; box-shadow: 0 6px 14px rgba(21,101,216,.3);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; color: var(--navy-900); letter-spacing: .02em; }
.brand-text span { font-size: 11px; color: var(--ink-500); letter-spacing: .04em; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--ink-600);
  transition: all .2s ease;
}
.nav-links a:hover { color: var(--blue-600); background: var(--bg-soft); }
.nav-links a.active { color: var(--blue-600); background: var(--bg-tint); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .btn { padding: 10px 20px; font-size: 15px; }

.nav-toggle { display: none; background: none; border: 0; width: 42px; height: 42px; border-radius: 10px; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--navy-900); border-radius: 2px; margin: 0 auto; transition: all .25s;
  position: relative;
}
.nav-toggle span::before { position: absolute; top: -7px; left: 0; }
.nav-toggle span::after { position: absolute; top: 7px; left: 0; }

/* ------------------------------ Hero ------------------------------ */
.hero { position: relative; overflow: hidden; background: linear-gradient(160deg, #0b2447 0%, #123c7a 55%, #1565d8 100%); color: #fff; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(900px 500px at 85% 10%, rgba(43,125,233,.45), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, rgba(0,168,107,.25), transparent 60%);
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center;
  padding: 96px 24px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; color: #dbe7fb;
  margin-bottom: 22px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(0,168,107,.25); }
.hero h1 { color: #fff; font-size: 46px; letter-spacing: -.01em; margin-bottom: 18px; }
.hero h1 .hl { color: #9cc5ff; }
.hero .sub { font-size: 19px; color: #c7d6ee; max-width: 560px; margin-bottom: 30px; }
.hero .sub strong { color: #fff; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-note { font-size: 14px; color: #a9bedd; }
.hero-note b { color: #fff; }

.hero-visual {
  position: relative;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-lg); padding: 26px;
  box-shadow: var(--shadow-lg); backdrop-filter: blur(6px);
}
.score-card { background: #fff; border-radius: var(--radius); padding: 24px; color: var(--ink-700); }
.score-card .title { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 6px; }
.score-card .hint { font-size: 12px; color: var(--ink-500); margin-bottom: 16px; }
.score-ring { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.score-ring .num { font-size: 44px; font-weight: 800; color: var(--red); line-height: 1; }
.score-ring .bar { flex: 1; }
.score-ring .bar .track { height: 10px; background: #eef2f7; border-radius: 999px; overflow: hidden; margin-bottom: 6px; }
.score-ring .bar .fill { height: 100%; width: 72%; background: linear-gradient(90deg, var(--amber), var(--red)); border-radius: 999px; }
.score-ring .bar .lbl { font-size: 12px; color: var(--ink-500); }
.score-list { display: grid; gap: 10px; }
.score-list .item { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.score-list .item .ico { width: 22px; height: 22px; border-radius: 7px; flex: none; display: flex; align-items: center; justify-content: center; font-size: 13px; }
.ico--risk { background: #fde8ec; color: var(--red); }
.ico--warn { background: var(--amber-soft); color: #c17a00; }
.ico--ok { background: var(--accent-soft); color: var(--accent); }

/* ------------------------------ 数据条 ------------------------------ */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: -52px; position: relative; z-index: 2; }
.stat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; text-align: center; box-shadow: var(--shadow-md);
}
.stat-card .num { color: var(--blue-600); line-height: 1; }
.stat-card .num .count { font-size: 44px; font-weight: 800; letter-spacing: -.02em; }
.stat-card .num .unit { font-size: 18px; font-weight: 700; margin-left: 4px; }
.stat-card .label { font-size: 15px; font-weight: 600; color: var(--navy-900); margin-top: 10px; }
.stat-card .desc { font-size: 13px; color: var(--ink-500); margin-top: 4px; }

/* ------------------------------ 卡片网格 ------------------------------ */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: all .25s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--line-strong); }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--ink-600); }

/* 层级配色 */
.layer-card { border-top: 4px solid; }
.layer-card.layer-in { border-top-color: var(--blue-500); }
.layer-card.layer-bind { border-top-color: var(--accent); }
.layer-card.layer-cash { border-top-color: var(--amber); }

.layer-tag {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; margin-bottom: 14px;
}
.layer-tag.in { background: var(--bg-tint); color: var(--blue-600); }
.layer-tag.bind { background: var(--accent-soft); color: #008b59; }
.layer-tag.cash { background: var(--amber-soft); color: #b87800; }

/* 服务清单 */
.service-item { display: flex; gap: 16px; padding: 22px 24px; border-radius: var(--radius-sm); transition: background .2s; }
.service-item:hover { background: var(--bg-soft); }
.service-item + .service-item { margin-top: 4px; }
.service-item .num {
  flex: none; width: 40px; height: 40px; border-radius: 11px; background: var(--bg-tint);
  color: var(--blue-600); font-weight: 800; display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.service-item .body { flex: 1; }
.service-item .body h3 { font-size: 17px; margin-bottom: 5px; }
.service-item .body p { font-size: 14px; color: var(--ink-600); }
.service-item .fee { flex: none; align-self: center; font-size: 14px; font-weight: 700; color: var(--accent); white-space: nowrap; }

/* ------------------------------ 流程 ------------------------------ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 26px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.step .n {
  width: 40px; height: 40px; border-radius: 50%; background: var(--blue-600); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--ink-600); }

/* ------------------------------ 表格 ------------------------------ */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 640px; }
th, td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--bg-soft); color: var(--navy-900); font-weight: 700; font-size: 14px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #fafcff; }
td strong { color: var(--navy-900); }
.tag {
  display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; line-height: 1.5;
}
.tag.blue { background: var(--bg-tint); color: var(--blue-600); }
.tag.green { background: var(--accent-soft); color: #008b59; }
.tag.amber { background: var(--amber-soft); color: #b87800; }
.tag.gray { background: #f2f4f7; color: var(--ink-600); }

/* ------------------------------ 案例 ------------------------------ */
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.case-card .head { padding: 24px 28px; background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.case-card .head h3 { font-size: 19px; margin-bottom: 12px; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.case-card .body { padding: 24px 28px; }
.case-card .body .row { display: flex; gap: 10px; padding: 8px 0; font-size: 14.5px; }
.case-card .body .row .k { flex: none; width: 84px; color: var(--ink-500); font-weight: 600; }
.case-card .body .row .v { flex: 1; color: var(--ink-700); }
.case-verdict { margin-top: 16px; padding: 14px 18px; background: var(--amber-soft); border-radius: var(--radius-sm); font-size: 14px; color: #8a5c00; }
.case-verdict b { color: #7a5100; }

/* ------------------------------ 优势 ------------------------------ */
.founder { display: grid; grid-template-columns: 340px 1fr; gap: 40px; align-items: start; }
.founder-photo {
  border-radius: var(--radius-lg); background: linear-gradient(150deg, var(--bg-tint), var(--bg-soft));
  border: 1px solid var(--line); padding: 40px 30px; text-align: center;
}
.founder-photo .avatar {
  width: 120px; height: 120px; border-radius: 50%; margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--blue-500), var(--navy-900));
  color: #fff; display: flex; align-items: center; justify-content: center; font-size: 44px; font-weight: 800;
  box-shadow: var(--shadow-md);
}
.founder-photo h3 { font-size: 22px; margin-bottom: 6px; }
.founder-photo .role { color: var(--blue-600); font-weight: 600; font-size: 14px; margin-bottom: 16px; }
.founder-photo .quote { font-size: 14px; color: var(--ink-600); font-style: italic; }
.founder-timeline { display: grid; gap: 14px; }
.founder-timeline .item { display: flex; gap: 16px; align-items: flex-start; }
.founder-timeline .item .yr { flex: none; width: 64px; font-weight: 800; color: var(--blue-600); font-size: 15px; }
.founder-timeline .item .tx { flex: 1; font-size: 15px; color: var(--ink-700); }

/* ------------------------------ 优势 ------------------------------ */
.adv-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.adv-item { text-align: center; padding: 26px 16px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.adv-item .ico { font-size: 28px; margin-bottom: 12px; }
.adv-item h4 { font-size: 16px; margin-bottom: 8px; }
.adv-item p { font-size: 13px; color: var(--ink-600); line-height: 1.6; }

/* ------------------------------ 资讯 ------------------------------ */
.post-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.post-card .thumb { height: 180px; background: linear-gradient(135deg, var(--bg-tint), var(--bg-soft)); display: flex; align-items: center; justify-content: center; font-size: 52px; }
.post-card .body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.post-card .meta { display: flex; gap: 10px; margin-bottom: 12px; align-items: center; }
.post-card h3 { font-size: 18px; margin-bottom: 10px; line-height: 1.5; }
.post-card h3 a { color: var(--navy-900); }
.post-card h3 a:hover { color: var(--blue-600); }
.post-card p { font-size: 14px; color: var(--ink-600); flex: 1; margin-bottom: 16px; }

/* ------------------------------ CTA 区 ------------------------------ */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: 64px 56px; background: linear-gradient(135deg, var(--blue-700), var(--blue-600)); color: #fff; text-align: center; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 300px at 20% 0%, rgba(255,255,255,.18), transparent 60%); }
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 14px; }
.cta-band p { color: #d6e4fa; font-size: 16px; max-width: 620px; margin: 0 auto 28px; }
.cta-band .actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ------------------------------ 表单 ------------------------------ */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-md); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--navy-900); }
.field label .req { color: var(--red); }
.field input, .field select, .field textarea {
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm); padding: 12px 14px;
  font-size: 15px; color: var(--ink-900); background: #fff; transition: all .2s; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(43,125,233,.15);
}
.field textarea { resize: vertical; min-height: 110px; }
.check-group { display: flex; flex-wrap: wrap; gap: 10px; }
.check-group label { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: var(--ink-700); cursor: pointer; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 999px; transition: all .2s; }
.check-group input { display: none; }
.check-group input:checked + span { color: var(--blue-600); }
.check-group label:has(input:checked) { border-color: var(--blue-500); background: var(--bg-tint); color: var(--blue-600); }
.form-success { display: none; text-align: center; padding: 30px 0; }
.form-success .ico { width: 64px; height: 64px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 30px; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.form-success h3 { font-size: 20px; margin-bottom: 8px; }

/* ------------------------------ FAQ ------------------------------ */
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; }
.faq-item summary { padding: 18px 22px; font-weight: 600; color: var(--navy-900); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; color: var(--blue-600); font-weight: 400; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .a { padding: 0 22px 20px; font-size: 15px; color: var(--ink-600); }

/* ------------------------------ 页头 ------------------------------ */
.page-hero { background: linear-gradient(160deg, #0b2447 0%, #123c7a 70%, #1565d8 100%); color: #fff; padding: 72px 24px; position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(700px 400px at 85% 20%, rgba(43,125,233,.4), transparent 60%); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero .eyebrow { color: #9cc5ff; }
.page-hero .eyebrow::before { background: #9cc5ff; }
.page-hero h1 { color: #fff; font-size: 40px; margin-bottom: 14px; }
.page-hero .lead { font-size: 18px; color: #c7d6ee; max-width: 680px; }

/* ------------------------------ 页脚 ------------------------------ */
.site-footer { background: var(--navy-900); color: #a9bedd; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 18px; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid ul a { color: #a9bedd; font-size: 14px; }
.footer-grid ul a:hover { color: #fff; }
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text span { color: #7d94b8; }
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 320px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #7d94b8; }
.footer-bottom a { color: #a9bedd; }

/* ------------------------------ 微信二维码卡片 ------------------------------ */
.qr-card { display: grid; grid-template-columns: 180px 1fr; gap: 24px; align-items: center; }
.qr-wrap { text-align: center; }
.qr-wrap img { width: 180px; height: 180px; border-radius: 12px; border: 1px solid var(--line); display: block; margin: 0 auto; }
.qr-tip { font-size: 13px; color: var(--ink-500); margin-top: 10px; }
.qr-info { border-left: 1px dashed var(--line); padding-left: 24px; }
@media (max-width: 720px) {
  .qr-card { grid-template-columns: 1fr; gap: 16px; }
  .qr-info { border-left: 0; padding-left: 0; border-top: 1px dashed var(--line); padding-top: 16px; }
}

/* ------------------------------ 动画 ------------------------------ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 38px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(3, 1fr); }
  .founder { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 27px; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px 24px 24px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
    transform: translateY(-140%); transition: transform .3s ease; z-index: 99;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 16px; border-radius: 12px; font-size: 16px; }
  .nav-links .nav-cta-mobile { display: flex; margin-top: 8px; }
  .nav-links .nav-cta-mobile .btn { width: 100%; }
  .hero-grid { padding: 64px 20px; }
  .hero h1 { font-size: 32px; }
  .hero .sub { font-size: 16px; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: -40px; gap: 12px; }
  .stat-card { padding: 20px 14px; }
  .stat-card .num { font-size: 30px; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-band { padding: 44px 24px; }
  .cta-band h2 { font-size: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .page-hero h1 { font-size: 30px; }
  .service-item { padding: 16px; }
  .service-item .fee { align-self: flex-start; }
}

/* 桌面端隐藏移动版 CTA */
.nav-cta-mobile { display: none; }