/* ============================================================
   hbjlwhkj.com 站点样式表  (广州黑白精灵文化科技有限责任公司)
   设计基调：黑白为骨（品牌名"黑白精灵"）+ 靛青为魂（AI 科技感）
   约束：无 emoji、无外部依赖、移动优先、可离线渲染
   ============================================================ */

:root {
  --brand:      #4F46E5;   /* 精灵靛蓝 - 主色 */
  --brand-dark: #3730A3;
  --brand-soft: #EEF2FF;
  --accent:     #06B6D4;   /* 精灵青 - 辅助 */
  --ink:        #0F172A;   /* 墨黑 - 标题 */
  --body:       #334155;   /* 正文 */
  --muted:      #64748B;   /* 次要文字 */
  --line:       #E2E8F0;
  --bg:         #FFFFFF;
  --bg-soft:    #F8FAFC;
  --bg-ink:     #0B1120;
  --ok:         #059669;
  --warn:       #B45309;
  --radius:     14px;
  --radius-sm:  9px;
  --shadow:     0 1px 2px rgba(15,23,42,.06), 0 8px 24px -12px rgba(15,23,42,.18);
  --shadow-lg:  0 2px 4px rgba(15,23,42,.06), 0 24px 48px -20px rgba(15,23,42,.28);
  --maxw:       1160px;
  --sans: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",
          "Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--sans); color: var(--body);
  background: var(--bg); font-size: 16px; line-height: 1.75;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 14px; z-index: 99; border-radius: 8px; }

/* ---------- 顶栏 ---------- */
.topbar { background: var(--bg-ink); color: #CBD5E1; font-size: 13px; }
.topbar .wrap { display: flex; gap: 18px; align-items: center; justify-content: space-between; height: 38px; }
.topbar a { color: #CBD5E1; }
.topbar .tb-right { display: flex; gap: 16px; }

.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 700; text-decoration: none; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 36px; height: 36px; flex: 0 0 36px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text b { font-size: 16px; letter-spacing: .3px; }
.logo-text span { font-size: 11px; color: var(--muted); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--body); font-size: 14.5px; padding: 9px 13px; border-radius: var(--radius-sm);
  white-space: nowrap;
}
.nav a:hover { background: var(--brand-soft); color: var(--brand-dark); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--brand-dark); font-weight: 700; background: var(--brand-soft); }
.nav .nav-cta {
  background: var(--brand); color: #fff; font-weight: 600; margin-left: 8px; padding: 10px 18px;
}
.nav .nav-cta:hover { background: var(--brand-dark); color: #fff; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 9px;
  width: 42px; height: 38px; cursor: pointer; color: var(--ink); font-size: 18px; line-height: 1;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 13px 26px; border-radius: var(--radius-sm); font-weight: 600; font-size: 15.5px;
  border: 1px solid transparent; cursor: pointer; transition: .18s; text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dark); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #1E293B; color: #fff; }
.btn-sm { padding: 9px 18px; font-size: 14px; }

/* ---------- 面包屑 ---------- */
.crumb { padding: 16px 0 0; font-size: 13.5px; color: var(--muted); }
.crumb a { color: var(--muted); }
.crumb span { margin: 0 7px; color: #CBD5E1; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 420px at 82% -8%, rgba(6,182,212,.32), transparent 70%),
    radial-gradient(700px 380px at 8% 8%, rgba(79,70,229,.45), transparent 68%),
    linear-gradient(160deg, #0B1120 0%, #131C31 60%, #0B1120 100%);
}
.hero .wrap { padding: 74px 20px 66px; }
.hero h1 {
  font-size: clamp(29px, 4.6vw, 48px); line-height: 1.22; margin: 0 0 18px;
  letter-spacing: -.4px; color: #fff; font-weight: 800;
}
.hero h1 em { font-style: normal; color: #A5B4FC; }
.hero .lead { font-size: clamp(15.5px, 1.6vw, 18.5px); color: #CBD5E1; max-width: 760px; margin: 0 0 12px; }
.hero .kicker {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .6px;
  color: #67E8F9; background: rgba(6,182,212,.14); border: 1px solid rgba(6,182,212,.35);
  padding: 6px 14px; border-radius: 99px; margin-bottom: 20px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
.hero-actions .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.hero-actions .btn-ghost:hover { background: rgba(255,255,255,.1); color: #fff; border-color: #fff; }
.hero-points { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 26px; padding: 0; margin: 30px 0 0; }
.hero-points li { font-size: 14.5px; color: #E2E8F0; display: flex; align-items: center; gap: 8px; }
.hero-points li::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--accent); flex: 0 0 7px; }

/* 数据条 */
.stats { background: var(--bg-ink); border-top: 1px solid rgba(255,255,255,.08); }
.stats .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 28px 20px;
}
.stat b { display: block; font-size: clamp(22px,3vw,30px); color: #fff; font-weight: 800; line-height: 1.2; }
.stat span { font-size: 13.5px; color: #94A3B8; }

/* ---------- 通用区块 ---------- */
.sec { padding: 66px 0; }
.sec-soft { background: var(--bg-soft); }
.sec-ink { background: var(--bg-ink); color: #CBD5E1; }
.sec-head { max-width: 780px; margin: 0 auto 40px; text-align: center; }
.sec-head.left { margin-left: 0; text-align: left; }
.sec-head h2 { font-size: clamp(23px,3vw,33px); color: var(--ink); margin: 0 0 12px; letter-spacing: -.3px; line-height: 1.3; }
.sec-ink .sec-head h2 { color: #fff; }
.sec-head p { margin: 0; color: var(--muted); font-size: 16.5px; }
.sec-ink .sec-head p { color: #94A3B8; }

.grid { display: grid; gap: 22px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); height: 100%;
}
.card h3 { margin: 0 0 10px; font-size: 18.5px; color: var(--ink); }
.card p { margin: 0; font-size: 15px; color: var(--body); }
.card .num {
  display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px;
  border-radius: 9px; background: var(--brand-soft); color: var(--brand-dark);
  font-weight: 800; font-size: 15px; margin-bottom: 14px;
}
.card ul { padding-left: 18px; margin: 12px 0 0; font-size: 14.5px; }
.card ul li { margin: 5px 0; }

.biz-card { border-top: 3px solid var(--brand); }
.biz-card:nth-child(2) { border-top-color: var(--accent); }
.biz-card:nth-child(3) { border-top-color: #F59E0B; }

/* 文章正文 */
.article { max-width: 820px; }
.article h2 { font-size: 25px; color: var(--ink); margin: 40px 0 14px; padding-top: 6px; }
.article h3 { font-size: 19px; color: var(--ink); margin: 28px 0 10px; }
.article p, .article li { font-size: 16.5px; }
.article ul, .article ol { padding-left: 22px; }
.article blockquote {
  margin: 22px 0; padding: 14px 20px; background: var(--brand-soft);
  border-left: 4px solid var(--brand); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--brand-dark); font-size: 15.5px;
}
.article code { background: #F1F5F9; padding: 2px 6px; border-radius: 5px; font-size: 14.5px; }
.meta-line { color: var(--muted); font-size: 13.5px; margin: 0 0 6px; }
.summary {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 22px; margin: 22px 0 30px; font-size: 15.5px;
}
.summary b { color: var(--ink); }

/* 表格 */
.tbl-wrap { overflow-x: auto; margin: 22px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; background: #fff; }
caption { caption-side: top; text-align: left; font-size: 13.5px; color: var(--muted); padding-bottom: 8px; }
th, td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; vertical-align: top; }
th { background: #F1F5F9; color: var(--ink); font-weight: 700; }
tbody tr:nth-child(even) { background: #FCFDFE; }

/* FAQ */
.faq { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer; padding: 17px 22px; font-weight: 600; color: var(--ink);
  font-size: 16px; list-style: none; position: relative; padding-right: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 22px; top: 15px; color: var(--brand);
  font-size: 20px; font-weight: 700; line-height: 1;
}
.faq details[open] summary::after { content: "\2013"; }
.faq details[open] summary { background: var(--brand-soft); }
.faq .ans { padding: 4px 22px 20px; font-size: 15.5px; color: var(--body); }
.faq .ans p { margin: 0 0 10px; }

/* 步骤 */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: s; }
.steps li {
  position: relative; padding: 0 0 26px 58px; counter-increment: s;
  border-left: 2px dashed var(--line); margin-left: 18px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(s); position: absolute; left: -19px; top: -3px;
  width: 36px; height: 36px; border-radius: 50%; background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px;
}
.steps h3 { margin: 3px 0 6px; font-size: 17.5px; color: var(--ink); }
.steps p { margin: 0; font-size: 15px; }

/* 清单 */
.checks { list-style: none; padding: 0; margin: 14px 0; }
.checks li { position: relative; padding-left: 30px; margin: 9px 0; font-size: 15.5px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 17px; height: 17px;
  border: 2px solid var(--brand); border-radius: 5px; background: var(--brand-soft);
}

/* 提示块 */
.note {
  border-left: 4px solid var(--accent); background: #ECFEFF; padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 20px 0; font-size: 15px;
}
.note strong { color: #0E7490; }

/* CTA 带 */
.cta-band {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 55%, #0B1120 100%);
  color: #fff; border-radius: var(--radius); padding: 44px 36px; text-align: center;
}
.cta-band h2 { color: #fff; font-size: clamp(21px,2.6vw,28px); margin: 0 0 10px; }
.cta-band p { color: #C7D2FE; margin: 0 0 24px; font-size: 16px; }
.cta-band .btn-ghost { background: #fff; color: var(--brand-dark); border-color: #fff; }

/* 页脚 */
.site-footer { background: var(--bg-ink); color: #94A3B8; padding: 54px 0 26px; font-size: 14.5px; }
.site-footer h3 { color: #fff; font-size: 15.5px; margin: 0 0 14px; }
.site-footer a { color: #94A3B8; display: block; padding: 4px 0; }
.site-footer a:hover { color: #fff; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr; gap: 30px; }
.foot-brand b { color: #fff; font-size: 16px; display: block; margin-bottom: 10px; }
.foot-brand p { margin: 0 0 8px; line-height: 1.7; }
.foot-entity { font-size: 13.5px; color: #64748B; line-height: 1.9; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 38px; padding-top: 20px;
  display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; font-size: 13px; color: #64748B;
}

/* 内页头图 */
.page-hero { background: linear-gradient(160deg,#0B1120,#1E293B); color: #fff; padding: 52px 0 46px; }
.page-hero h1 { font-size: clamp(25px,3.4vw,38px); margin: 0 0 12px; color: #fff; letter-spacing: -.3px; }
.page-hero p { margin: 0; color: #CBD5E1; font-size: 16.5px; max-width: 780px; }

/* 联系表单 */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14.5px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-family: var(--sans); font-size: 15px; color: var(--ink); background: #fff;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(79,70,229,.14);
}
.form-row textarea { min-height: 118px; resize: vertical; }

/* 其他 */
.tag {
  display: inline-block; font-size: 12.5px; padding: 3px 11px; border-radius: 99px;
  background: var(--brand-soft); color: var(--brand-dark); font-weight: 600; margin: 0 6px 6px 0;
}
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { border-bottom: 1px solid var(--line); padding: 20px 0; }
.post-list h3 { margin: 0 0 6px; font-size: 18.5px; }
.post-list p { margin: 0; font-size: 15px; color: var(--muted); }
.toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; }
.toc ol { margin: 8px 0 0; padding-left: 20px; font-size: 15px; }
.toc a { color: var(--body); }
.muted { color: var(--muted); }
.center { text-align: center; }
.mt0 { margin-top: 0; }
.mb0 { margin-bottom: 0; }
.qa-block { border-left: 3px solid var(--brand); padding-left: 16px; margin: 22px 0; }
.qa-block .q { font-weight: 700; color: var(--ink); font-size: 16.5px; margin: 0 0 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .g4 { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff;
    flex-direction: column; align-items: stretch; padding: 12px; gap: 4px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; }
  .nav .nav-cta { margin: 8px 0 0; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .stats .wrap { grid-template-columns: repeat(2,1fr); }
  .topbar .tb-right { display: none; }
  .hero .wrap { padding: 52px 20px 46px; }
  .sec { padding: 48px 0; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .steps li { padding-left: 46px; }
  .cta-band { padding: 32px 20px; }
}
@media print {
  .site-header, .topbar, .site-footer, .hero-actions, .nav-toggle { display: none; }
  body { font-size: 12pt; }
}

/* 备案信息展示（合规必需） */
.foot-icp{display:inline-flex;flex-wrap:wrap;gap:8px;align-items:center;color:#94a3b8}
.foot-icp a{color:#c7d2fe;text-decoration:none;border-bottom:1px dotted rgba(199,210,254,.5)}
.foot-icp a:hover{color:#fff}
@media(max-width:640px){.foot-bottom .foot-icp{display:block;width:100%;margin-top:6px}}