/* geo小助手 官网 - GEO 友好静态站 */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --bg-mist: #eef1f7;
  --ink: #141a2e;
  --ink-2: #43507a;
  --ink-3: #6c7794;
  --brand: #0a8f8a;
  --brand-dark: #07716d;
  --brand-soft: #e0f4f1;
  --accent: #12a06a;
  --accent-soft: #e2f6ee;
  --warn: #b34a00;
  --warn-soft: #fdf0e3;
  --line: #dfe3ee;
  --radius: 12px;
  --radius-lg: 18px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ul, ol { padding-left: 1.4em; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- 头部导航 ---------- */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.head-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; color: var(--ink); }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  object-fit: contain; display: block;
}
.nav { display: flex; gap: 4px; }
.nav a {
  color: var(--ink-2); font-size: 15px; padding: 8px 14px; border-radius: 8px;
}
.nav a:hover { background: var(--bg-mist); text-decoration: none; color: var(--ink); }
.nav a.btn-nav {
  background: var(--brand); color: #fff; margin-left: 6px; font-weight: 500;
}
.nav a.btn-nav:hover { background: var(--brand-dark); }
.nav-toggle { display: none; }

/* ---------- 首屏 ---------- */
.hero { padding: 72px 0 64px; background: var(--bg-soft); }
.hero-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 38px; line-height: 1.3; letter-spacing: .5px; margin-bottom: 18px; }
.hero h1 .em { color: var(--brand); }
.hero .lede { font-size: 17.5px; color: var(--ink-2); margin-bottom: 26px; }
.hero .direct-answer {
  background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--brand);
  border-radius: var(--radius); padding: 16px 20px; font-size: 15px; color: var(--ink-2);
  margin-bottom: 28px;
}
.hero .direct-answer strong { color: var(--ink); }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: 10px; font-size: 16px; font-weight: 500;
  cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); text-decoration: none; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-3); text-decoration: None; }
.hero-cards { display: grid; gap: 14px; }
.hcard {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; display: flex; gap: 14px; align-items: flex-start;
}
.hcard .dot {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px;
}
.hcard h3 { font-size: 15.5px; margin-bottom: 2px; }
.hcard p { font-size: 13.5px; color: var(--ink-3); line-height: 1.6; }

/* ---------- 数据条 ---------- */
.stats { border-block: 1px solid var(--line); background: #fff; }
.stats-in { display: grid; grid-template-columns: repeat(4, 1fr); padding: 34px 0; }
.stat { text-align: center; }
.stat b { font-size: 30px; font-weight: 700; color: var(--brand); display: block; line-height: 1.2; }
.stat span { font-size: 13.5px; color: var(--ink-3); }

/* ---------- 通用节 ---------- */
section.block { padding: 64px 0; }
section.block.alt { background: var(--bg-soft); }
.block-head { max-width: 720px; margin-bottom: 36px; }
.block-head h2 { font-size: 27px; margin-bottom: 10px; letter-spacing: .3px; }
.block-head p { color: var(--ink-2); font-size: 16px; }
.block-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- 服务卡片 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 26px 24px; display: flex; flex-direction: column; gap: 10px;
}
.svc h3 { font-size: 18px; }
.svc .price { font-size: 14px; color: var(--brand); font-weight: 600; }
.svc p { font-size: 14.5px; color: var(--ink-2); }
.svc ul { font-size: 14px; color: var(--ink-2); margin: 4px 0 12px; }
.svc ul li { margin: 5px 0; }
.svc .more { margin-top: auto; font-size: 14.5px; font-weight: 500; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 20px 20px; position: relative; counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  display: block; font-size: 13px; font-weight: 700; color: var(--brand);
  font-family: ui-monospace, Consolas, monospace; margin-bottom: 10px;
}
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--ink-3); line-height: 1.65; }

/* ---------- FAQ 摘要 ---------- */
.faq-lite { max-width: 780px; }
.faq-lite details {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0 22px; margin-bottom: 12px;
}
.faq-lite summary {
  cursor: pointer; list-style: none; padding: 16px 0; font-weight: 500; font-size: 15.5px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-lite summary::-webkit-details-marker { display: none; }
.faq-lite summary::after { content: "+"; font-size: 20px; color: var(--ink-3); flex: none; }
.faq-lite details[open] summary::after { content: "−"; }
.faq-lite details .a { padding: 0 0 18px; color: var(--ink-2); font-size: 15px; }

/* ---------- 页脚 ---------- */
.site-foot { background: #101527; color: #c3c9dd; padding: 56px 0 32px; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
.site-foot h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-foot a { color: #c3c9dd; }
.site-foot a:hover { color: #fff; }
.site-foot li { margin: 7px 0; list-style: none; }
.foot-note {
  border-top: 1px solid rgba(255,255,255,.14); padding-top: 22px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: #8b93ad;
}

/* ---------- 文章页 ---------- */
.page-hero { background: var(--bg-soft); padding: 52px 0 44px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 30px; margin-bottom: 10px; line-height: 1.4; }
.page-hero .meta { font-size: 13.5px; color: var(--ink-3); display: flex; gap: 18px; flex-wrap: wrap; }
.article { max-width: 800px; margin: 0 auto; }
.article-body { max-width: 800px; margin: 0 auto; padding: 44px 0 64px; }
.article-body h2 { font-size: 22px; margin: 40px 0 14px; }
.article-body h3 { font-size: 17.5px; margin: 28px 0 10px; }
.article-body p { margin: 13px 0; color: var(--ink-2); }
.article-body li { margin: 7px 0; color: var(--ink-2); }
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14.5px; }
.article-body th {
  background: var(--bg-mist); text-align: left; padding: 11px 14px;
  border: 1px solid var(--line); font-weight: 600; white-space: nowrap;
}
.article-body td { border: 1px solid var(--line); padding: 10px 14px; color: var(--ink-2); }
.article-body td { color: var(--ink-2); }
.article-body figure.art-img {
  margin: 28px 0; padding: 0; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
}
.article-body figure.art-img img { display: block; width: 100%; height: auto; }
.article-body figure.art-img figcaption {
  padding: 10px 16px; font-size: 13px; color: var(--ink-3); background: var(--bg-mist);
  border-top: 1px solid var(--line);
}
.toc {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 22px; margin: 26px 0; font-size: 14px;
}
.toc b { display: block; margin-bottom: 8px; }
.toc ol { margin: 0; }
.author-box {
  display: flex; gap: 14px; align-items: center; margin-top: 44px; padding-top: 24px;
  border-top: 1px solid var(--line);
}
.author-box .avatar {
  width: 52px; height: 52px; border-radius: 50%; background: var(--brand-soft);
  color: var(--brand); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 17px; flex: none;
}
.author-box .name { font-weight: 600; font-size: 15px; }
.author-box .bio { font-size: 13px; color: var(--ink-3); }
.update-note { font-size: 12.5px; color: var(--ink-3); margin-top: 18px; }

/* ---------- 知识库列表 ---------- */
.kb-list { display: grid; gap: 16px; }
.kb-item {
  display: grid; grid-template-columns: 76px 1fr; gap: 20px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px;
}
.kb-item .date {
  font-size: 12.5px; color: var(--ink-3); border-right: 1px solid var(--line);
  padding-top: 3px; text-align: center;
}
.kb-item .date b { display: block; font-size: 20px; color: var(--ink); font-weight: 700; }
.kb-item h3 { font-size: 17.5px; margin-bottom: 6px; line-height: 1.5; }
.kb-item p { font-size: 14px; color: var(--ink-3); }
.kb-item .tags { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: 12px; color: var(--brand); background: var(--brand-soft);
  padding: 2px 10px; border-radius: 999px;
}

/* ---------- CTA ---------- */
.cta-band { background: var(--brand); color: #fff; padding: 56px 0; }
.cta-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { font-size: 24px; margin-bottom: 6px; }
.cta-band p { color: #dff3f0; font-size: 15px; }
.btn-white { background: #fff; color: var(--brand); }
.btn-white:hover { background: #eaf6f4; text-decoration: none; }

/* ---------- 表格（服务页报价等） ---------- */
.price-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14.5px; }
.price-table th {
  background: var(--bg-mist); text-align: left; padding: 12px 16px;
  border: 1px solid var(--line); white-space: nowrap;
}
.price-table td { border: 1px solid var(--line); padding: 12px 16px; color: var(--ink-2); }
.price-table td b { color: var(--ink); }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column;
}
.case .kpi-strip { background: var(--bg-mist); padding: 18px 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.case .kpi b { font-size: 23px; font-weight: 700; color: var(--accent); display: block; line-height: 1.25; }
.case .kpi span { font-size: 12px; color: var(--ink-3); }
.case .body { padding: 20px 22px 24px; }
.case h3 { font-size: 16.5px; margin-bottom: 8px; }
.case p { font-size: 14px; color: var(--ink-2); }
.case .sector { font-size: 12px; color: var(--warn); background: var(--warn-soft); display: inline-block; padding: 2px 10px; border-radius: 999px; margin-bottom: 10px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.info-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; }
.info-card h3 { font-size: 16px; margin-bottom: 16px; }
.info-card dl { display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; font-size: 14.5px; }
.info-card dt { color: var(--ink-3); }
.info-card dd { color: var(--ink); }
form.contact { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px; }
form.contact label { display: block; font-size: 42px; font-weight: 600; margin: 26px 0 10px; }
form.contact label:first-child { margin-top: 0; }
form.contact input, form.contact select, form.contact textarea {
  width: 100%; padding: 24px 28px; border: 2px solid var(--line); border-radius: 14px;
  font-size: 45px; font-family: inherit; background: #fff; color: var(--ink); height: auto;
}
form.contact input:focus, form.contact select:focus, form.contact textarea:focus { border-color: var(--brand); outline: none; }
form.contact input::placeholder { font-size: 36px; color: var(--ink-3); }
form.contact textarea { min-height: 120px; resize: vertical; }
form.contact .hint { font-size: 19px; color: var(--ink-3); margin-top: 8px; }

/* ---------- 移动端 ---------- */
@media (max-width: 880px) {
  .hero-grid, .contact-grid { grid-template-columns: 1fr; }
  form.contact { padding: 24px; }
  form.contact label { font-size: 42px; margin: 24px 0 10px; }
  form.contact input, form.contact select, form.contact textarea { font-size: 45px; padding: 24px; border-radius: 14px; }
  form.contact input::placeholder { font-size: 36px; }
  form.contact .hint { font-size: 18px; }
  #leadBtn { font-size: 32px !important; padding: 26px !important; }
  .svc-grid, .case-grid, .steps, .stats-in { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px; gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a.btn-nav { margin: 8px 0 0; text-align: center; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--ink); }
  .hero h1 { font-size: 29px; }
  .hero { padding: 48px 0 44px; }
}
@media (max-width: 560px) {
  .svc-grid, .case-grid, .steps, .stats-in, .foot-grid { grid-template-columns: 1fr; }
  .kb-item { grid-template-columns: 1fr; }
  .kb-item .date { border-right: none; border-bottom: 1px solid var(--line); padding-bottom: 10px; text-align: left; }
  .hero h1 { font-size: 25px; }
}

/* ---------- 悬浮咨询窗 ---------- */
.float-cta {
  position: fixed; right: 18px; bottom: 96px; z-index: 90;
}
.float-cta .fc-btn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  width: 64px; padding: 10px 4px;
  background: linear-gradient(160deg, #0a8f8a, #12a06a);
  color: #fff; border: none; border-radius: 14px;
  cursor: pointer; font-family: inherit;
  box-shadow: 0 6px 22px rgba(10, 143, 138, .38);
  transition: transform .18s, box-shadow .18s;
}
.float-cta .fc-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(10, 143, 138, .5); }
.float-cta .fc-ico {
  width: 30px; height: 30px; border-radius: 50%;
  background: rgba(255,255,255,.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
}
.float-cta .fc-txt { font-size: 12px; font-weight: 500; letter-spacing: 1px; }
.float-cta.fc-shown .fc-btn { animation: fcPop .5s ease; }
@keyframes fcPop { 0% { transform: scale(.6); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }

.fc-mask {
  position: fixed; inset: 0; z-index: 99;
  background: rgba(16, 21, 39, .55);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.fc-mask[hidden] { display: none; }
.fc-modal {
  position: relative; width: 420px; max-width: 94vw;
  background: #fff; border-radius: 18px; padding: 30px 28px 26px;
  box-shadow: 0 24px 60px rgba(16, 21, 39, .3);
  animation: fcUp .25s ease;
}
@keyframes fcUp { from { transform: translateY(22px); opacity: 0; } to { transform: none; opacity: 1; } }
.fc-close {
  position: absolute; top: 12px; right: 14px;
  width: 30px; height: 30px; border: none; border-radius: 50%;
  background: #f0f3f8; color: #6c7794; font-size: 17px; cursor: pointer;
}
.fc-close:hover { background: #e3e8f0; color: #141a2e; }
.fc-modal h3 { font-size: 20px; color: #141a2e; }
.fc-tip { font-size: 13.5px; color: #6c7794; margin: 6px 0 18px; }
.fc-body { display: flex; gap: 18px; align-items: center; }
.fc-qr { width: 150px; height: 150px; border-radius: 12px; border: 1px solid #dfe3ee; flex-shrink: 0; }
.fc-info { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.fc-item { display: flex; flex-direction: column; gap: 2px; }
.fc-label { font-size: 12px; color: #6c7794; }
.fc-val { font-size: 15px; color: #141a2e; font-weight: 600; }
.fc-tel { color: #0a8f8a; text-decoration: none; font-size: 17px; }
.fc-tel:hover { text-decoration: underline; }

@media (max-width: 480px) {
  .float-cta { right: 12px; bottom: 84px; }
  .float-cta .fc-btn { width: 56px; }
  .fc-body { flex-direction: column; align-items: stretch; text-align: center; }
  .fc-qr { margin: 0 auto; }
}