/* ==========================================================================
   V3 辽宁资质代办咨询服务 — 全新设计系统
   沈阳恒昊互联网络有限公司 | 18609880118
   移动优先 / 现代专业 / SEO & GEO 友好
   ========================================================================== */
:root {
  --primary: #1558d6;
  --primary-dark: #0a2a5e;
  --primary-deep: #071d42;
  --primary-light: #3d7ef0;
  --accent: #f56a00;
  --accent-dark: #d95c00;
  --ink: #16233a;
  --muted: #5a6b84;
  --line: #e2e9f4;
  --bg: #ffffff;
  --bg-soft: #f4f7fc;
  --bg-deep: #0a2a5e;
  --ok: #0e9f6e;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(10, 42, 94, .09);
  --shadow-lg: 0 18px 48px rgba(10, 42, 94, .14);
  --shadow-sm: 0 2px 10px rgba(10, 42, 94, .06);
  --maxw: 1200px;
  --header-h: 70px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.75;
  color: var(--ink); background: var(--bg); overflow-x: hidden;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; border: 0; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }
h1, h2, h3, h4, h5 { margin: 0 0 .6em; line-height: 1.32; font-weight: 700; color: var(--primary-deep); }
h1 { font-size: 1.65rem; } h2 { font-size: 1.38rem; } h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
li { margin-bottom: .35em; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 7px; justify-content: center;
  padding: 12px 24px; border-radius: 999px; font-weight: 700; font-size: .95rem;
  border: 1.5px solid transparent; cursor: pointer; transition: .22s; line-height: 1.3;
}
.btn svg { flex-shrink: 0; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8a2a); color: #fff;
  box-shadow: 0 8px 20px rgba(245, 106, 0, .32);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--accent-dark), var(--accent)); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(245, 106, 0, .4); }
.btn-line { border-color: rgba(255,255,255,.55); color: #fff; background: rgba(255,255,255,.08); }
.btn-line:hover { background: rgba(255,255,255,.18); color: #fff; border-color: #fff; }
.section .btn-line, .cta .btn-line { border-color: var(--primary); color: var(--primary); background: transparent; }
.section .btn-line:hover, .cta .btn-line:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 8px 16px; font-size: .88rem; }

/* ---------- 顶栏 ---------- */
.topbar { background: var(--primary-deep); color: #b9cbe8; font-size: .8rem; line-height: 1.5; }
.topbar .container { display: flex; flex-wrap: wrap; gap: 4px 18px; align-items: center; justify-content: space-between; min-height: 36px; padding-top: 5px; padding-bottom: 5px; }
.topbar a { color: #d8e4f7; } .topbar a:hover { color: #fff; }
.topbar .tb-left { display: flex; flex-wrap: wrap; gap: 4px 18px; align-items: center; }
.topbar .tb-phone { color: #ffc998; font-weight: 700; }

/* ---------- 头部 / 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 900; background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(10px); -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line); transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(10,42,94,.1); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-logo { height: 44px; width: auto; flex-shrink: 0; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { font-size: 1.05rem; font-weight: 800; color: var(--primary-deep); letter-spacing: .2px; }
.brand-sub { font-size: .72rem; color: var(--muted); letter-spacing: .5px; }
@media (max-width: 479px) { .brand-logo { height: 38px; } .brand-name { font-size: .96rem; } }

.nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--line); background: #fff; border-radius: 11px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--primary-deep); border-radius: 2px; transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.main-nav { display: none; }
.main-nav ul { list-style: none; margin: 0; padding: 0; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a { display: block; padding: 10px 11px; font-size: .92rem; font-weight: 600; color: #2a3c5a; border-radius: 9px; white-space: nowrap; }
.main-nav > ul > li > a:hover, .main-nav > ul > li.active > a { color: var(--primary); background: var(--bg-soft); }
.sub-menu {
  position: absolute; top: 100%; left: 0; min-width: 216px; padding: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: .22s; z-index: 60;
}
.main-nav > ul > li:hover .sub-menu, .main-nav > ul > li:focus-within .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.sub-menu li { margin: 0; }
.sub-menu a { display: block; padding: 8px 12px; font-size: .88rem; color: #34465f; border-radius: 7px; white-space: nowrap; }
.sub-menu a:hover { background: var(--bg-soft); color: var(--primary); }
.header-cta { display: none; flex-shrink: 0; }

/* 移动端抽屉导航 */
.mobile-nav { position: fixed; inset: 0; z-index: 950; pointer-events: none; }
.mobile-nav .mn-panel { position: absolute; top: 0; right: 0; width: min(86vw, 360px); height: 100%; background: #fff; box-shadow: -10px 0 34px rgba(10,42,94,.2); transform: translateX(100%); transition: transform .3s ease; overflow-y: auto; padding-bottom: 90px; }
.mobile-nav .mn-mask { position: absolute; inset: 0; background: rgba(7,29,66,.5); opacity: 0; transition: opacity .3s; }
body.nav-open .mobile-nav { pointer-events: auto; }
body.nav-open .mobile-nav .mn-panel { transform: translateX(0); }
body.nav-open .mobile-nav .mn-mask { opacity: 1; }
body.nav-open { overflow: hidden; }
.mn-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: #fff; z-index: 2; }
.mn-head strong { font-size: 1rem; color: var(--primary-deep); }
.mn-close { width: 38px; height: 38px; border: 1px solid var(--line); background: #fff; border-radius: 10px; font-size: 1.15rem; cursor: pointer; color: #47536b; }
.mn-list { list-style: none; margin: 0; padding: 6px 0; }
.mn-list > li { margin: 0; border-bottom: 1px solid #eef3fa; }
.mn-list > li > a { display: block; padding: 13px 18px; font-weight: 700; color: #22334a; }
.mn-list > li > a.active { color: var(--primary); }
.mn-sub { list-style: none; margin: 0; padding: 0 0 8px 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.mn-sub a { display: block; padding: 7px 10px; font-size: .85rem; color: #4d5f7a; border-radius: 7px; }
.mn-sub a:hover { color: var(--primary); background: var(--bg-soft); }

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative; color: #eaf1fc; padding: 66px 0 60px; overflow: hidden;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(61,126,240,.5), transparent 60%),
    radial-gradient(700px 380px at 8% 110%, rgba(245,106,0,.28), transparent 55%),
    linear-gradient(150deg, var(--primary-deep) 0%, var(--primary-dark) 55%, #10418f 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000, transparent);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000, transparent);
}
.hero .container { position: relative; }
.hero-badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px; font-size: .8rem; letter-spacing: .3px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); color: #cfe0fa; margin-bottom: 20px;
}
.hero h1 { color: #fff; font-size: clamp(1.7rem, 4.6vw, 2.6rem); letter-spacing: .5px; margin-bottom: 16px; }
.hero h1 em { font-style: normal; background: linear-gradient(120deg, #ffd29e, #ff9a3d); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: 1.02rem; color: #c6d7f2; max-width: 760px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 20px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.16); }
.hs-item strong { display: block; font-size: 1.45rem; font-weight: 800; color: #fff; letter-spacing: .5px; }
.hs-item span { font-size: .8rem; color: #aec4e8; }

/* ---------- 快捷条 ---------- */
.quickbar { background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-sm); position: relative; z-index: 5; }
.quickbar .container { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-top: 13px; padding-bottom: 13px; }
.qb-label { font-size: .85rem; font-weight: 700; color: var(--muted); margin-right: 4px; }
.quickbar a { font-size: .85rem; color: var(--primary-deep); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px; transition: .2s; }
.quickbar a:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- 通用区块 ---------- */
.section { padding: 58px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 36px; }
.section-head p { color: var(--muted); margin: 0; }
.eyebrow {
  display: inline-block; font-size: .76rem; font-weight: 700; letter-spacing: 1.6px; color: var(--primary);
  background: rgba(21,88,214,.09); border-radius: 999px; padding: 4px 14px; margin-bottom: 12px; text-transform: uppercase;
}
.section-more { text-align: center; margin: 28px 0 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }

/* ---------- 卡片 ---------- */
.card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 22px; box-shadow: var(--shadow-sm); transition: .25s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #c9d9f5; }
.card h3 { margin-bottom: .5em; }
.card h3 a { color: var(--primary-deep); }
.card h3 a:hover { color: var(--primary); }
.card p { color: var(--muted); font-size: .92rem; margin-bottom: .8em; }
.card ul { font-size: .88rem; color: #3d4f6b; margin-bottom: 12px; padding-left: 1.15em; }
.card ul li { margin-bottom: .25em; }
.card-icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px;
  color: var(--primary); background: linear-gradient(135deg, rgba(21,88,214,.1), rgba(61,126,240,.16));
}
.cat-tag { position: absolute; top: 18px; right: 18px; font-size: .7rem; font-weight: 700; color: var(--primary); background: rgba(21,88,214,.08); padding: 3px 10px; border-radius: 999px; }
.card-more { margin-top: auto; font-size: .88rem; font-weight: 700; color: var(--primary); }
.card-more:hover { color: var(--accent); }

/* 优势卡片 */
.adv { display: flex; gap: 15px; align-items: flex-start; }
.adv-num {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  font-weight: 800; font-size: 1.05rem; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-light)); box-shadow: 0 6px 14px rgba(21,88,214,.3);
}
.adv h3 { font-size: 1.05rem; }
.adv p { margin: 0; }

/* ---------- 步骤 ---------- */
.steps { display: grid; gap: 16px; grid-template-columns: 1fr; counter-reset: step; }
.step {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 20px 18px 66px; box-shadow: var(--shadow-sm); transition: .25s; counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero); position: absolute; left: 18px; top: 20px;
  font-size: 1.5rem; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #c9d9f5; }
.step h3 { font-size: 1.02rem; margin-bottom: .3em; }
.step p { margin: 0; font-size: .88rem; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .22s; }
.faq-item.open { border-color: #c9d9f5; box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 16px 46px 16px 20px; font-size: .98rem; font-weight: 700; color: var(--primary-deep);
  position: relative; font-family: inherit; line-height: 1.5;
}
.faq-q::after {
  content: ""; position: absolute; right: 18px; top: 50%; width: 9px; height: 9px; margin-top: -7px;
  border-right: 2px solid var(--primary); border-bottom: 2px solid var(--primary);
  transform: rotate(45deg); transition: .25s;
}
.faq-item.open .faq-q::after { transform: rotate(-135deg); margin-top: -3px; }
.faq-a { display: none; padding: 0 20px 16px; color: var(--muted); font-size: .92rem; }
.faq-a p { margin: 0; }

/* ---------- CTA ---------- */
.cta {
  text-align: center; padding: 44px 26px; border-radius: 20px; color: #fff;
  background:
    radial-gradient(500px 200px at 90% 0%, rgba(245,106,0,.35), transparent 60%),
    linear-gradient(135deg, var(--primary-dark), var(--primary));
  box-shadow: var(--shadow-lg);
}
.cta h2 { color: #fff; }
.cta p { color: #d3e1f7; max-width: 620px; margin: 0 auto 24px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ---------- 内页 ---------- */
.page-hero {
  color: #eaf1fc; padding: 44px 0 38px;
  background:
    radial-gradient(700px 300px at 88% -20%, rgba(61,126,240,.45), transparent 60%),
    linear-gradient(140deg, var(--primary-deep), var(--primary-dark) 70%, #10418f);
}
.page-hero h1 { color: #fff; margin-bottom: .35em; }
.page-hero p { margin: 0; color: #c6d7f2; max-width: 780px; font-size: .96rem; }
.breadcrumb { background: #fff; border-bottom: 1px solid var(--line); font-size: .85rem; color: var(--muted); }
.breadcrumb .container { padding-top: 11px; padding-bottom: 11px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb a { color: var(--primary); }
.breadcrumb .sep { color: #b7c4d8; }

.layout { display: grid; grid-template-columns: 1fr; gap: 26px; padding-top: 34px; padding-bottom: 34px; }
.layout-side { display: grid; gap: 16px; align-content: start; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-sm); }
.side-title { font-weight: 800; color: var(--primary-deep); font-size: .98rem; padding-bottom: 10px; margin-bottom: 10px; border-bottom: 2px solid rgba(21,88,214,.14); }
.side-card ul { list-style: none; margin: 0; padding: 0; }
.side-card ul li { margin: 0; }
.side-card ul a { display: block; padding: 8px 10px; font-size: .9rem; color: #3d4f6b; border-radius: 8px; }
.side-card ul a:hover { background: var(--bg-soft); color: var(--primary); }
.side-card ul a.active { background: rgba(21,88,214,.1); color: var(--primary); font-weight: 700; }
.side-contact p { font-size: .85rem; color: var(--muted); margin-bottom: 10px; }
.side-tel { display: block; font-size: 1.2rem; font-weight: 800; color: var(--accent); letter-spacing: .4px; margin-bottom: 12px; }

/* ---------- 文章排版 ---------- */
.article {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm);
}
.article h2 {
  font-size: 1.22rem; margin: 1.4em 0 .7em; padding-left: 14px; position: relative;
}
.article h2::before { content: ""; position: absolute; left: 0; top: .18em; bottom: .18em; width: 4px; border-radius: 4px; background: linear-gradient(180deg, var(--primary), var(--primary-light)); }
.article h2:first-child { margin-top: 0; }
.article p, .article li { font-size: .95rem; color: #33455f; }
.article table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; font-size: .88rem; }
.article th, .article td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.article th { background: var(--bg-soft); color: var(--primary-deep); font-weight: 700; white-space: nowrap; }
.article tr:nth-child(even) td { background: #fafcfe; }
.article-meta { font-size: .82rem; color: var(--muted); padding-bottom: 16px; margin-bottom: 18px; border-bottom: 1px dashed var(--line); }
.note {
  margin-top: 26px; padding: 14px 18px; border-radius: var(--radius-sm); font-size: .88rem; color: #7a5a20;
  background: #fdf6e9; border: 1px solid #f3e2b8;
}
.answer-box {
  margin: 0 0 1.6em; padding: 18px 20px; border-radius: var(--radius); position: relative;
  background: linear-gradient(135deg, rgba(21,88,214,.07), rgba(61,126,240,.12));
  border: 1px solid rgba(21,88,214,.2);
}
.answer-box strong { display: inline-block; font-size: .8rem; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-light)); padding: 3px 12px; border-radius: 999px; margin-bottom: 10px; letter-spacing: 1px; }
.answer-box p { margin: 0; font-size: .95rem; color: #23364f; }
.rel-box { margin-top: 26px; padding: 16px 20px; border-radius: var(--radius-sm); background: var(--bg-soft); border: 1px solid var(--line); }
.rel-box strong { color: var(--primary-deep); font-size: .92rem; }
.rel-box ul { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 10px 0 0; padding: 0; list-style: none; }
.rel-box li { margin: 0; }
.rel-box a { font-size: .9rem; font-weight: 600; }

/* 知识问答卡片 */
.wd-card .wd-date { font-size: .74rem; font-weight: 700; color: var(--primary); background: rgba(21,88,214,.08); padding: 3px 11px; border-radius: 999px; align-self: flex-start; margin-bottom: 12px; letter-spacing: .5px; }

/* ---------- kv ---------- */
.kv { display: grid; }
.kv-row { display: grid; grid-template-columns: 92px 1fr; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: .92rem; }
.kv-row:last-child { border-bottom: 0; }
.kv-k { color: var(--muted); }
.kv-v { color: var(--ink); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-deep); color: #9db3d6; margin-top: 20px; }
.footer-top { display: grid; grid-template-columns: 1fr; gap: 0; padding: 46px 0 30px; }
.footer-brand { padding-bottom: 26px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-brand .brand-name { color: #fff; font-size: 1.15rem; font-weight: 800; display: block; margin-bottom: 12px; }
.footer-brand p { font-size: .86rem; margin: 0; max-width: 100%; }
.footer-links { display: grid; grid-template-columns: 1fr; gap: 26px 28px; padding-top: 30px; }
.footer-col h3 { color: #fff; font-size: .95rem; margin-bottom: 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.footer-col ul li { margin: 0; }
.footer-col a { color: #9db3d6; font-size: .86rem; }
.footer-col a:hover { color: #fff; }
.footer-contact .f-tel a { font-size: 1.25rem; font-weight: 800; color: #ffb27a; letter-spacing: .5px; }
.footer-contact p { font-size: .85rem; margin-bottom: 8px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0 24px; display: grid; gap: 6px; font-size: .8rem; text-align: center; }
.footer-bottom a { color: #b9cbe8; }

/* ---------- 浮动组件 ---------- */
.call-fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 800;
  display: none; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #ff8a2a); color: #fff; font-weight: 700; font-size: .92rem;
  box-shadow: 0 10px 26px rgba(245,106,0,.42);
}
.call-fab:hover { color: #fff; transform: translateY(-2px); }
.to-top {
  position: fixed; right: 18px; bottom: 78px; z-index: 800; width: 42px; height: 42px;
  border: 1px solid var(--line); background: #fff; border-radius: 12px; cursor: pointer;
  color: var(--primary); font-size: 1.05rem; box-shadow: var(--shadow-sm);
  opacity: 0; visibility: hidden; transition: .25s;
}
.to-top.show { opacity: 1; visibility: visible; }
.mobile-callbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 850; display: grid; grid-template-columns: 86px 1fr;
  background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -6px 24px rgba(10,42,94,.12);
}
.mobile-callbar a { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 13px 8px; font-size: .88rem; font-weight: 700; }
.mc-nav { color: var(--primary-deep); background: var(--bg-soft); }
.mc-call { color: #fff; background: linear-gradient(135deg, var(--accent), #ff8a2a); }
body { padding-bottom: 52px; }

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .layout { grid-template-columns: 280px 1fr; }
  .footer-links { grid-template-columns: repeat(4, 1fr); }
  .footer-bottom { text-align: left; }
  .call-fab { display: inline-flex; }
  .mobile-callbar { display: none; }
  body { padding-bottom: 0; }
}
@media (min-width: 1180px) {
  .main-nav { display: block; }
  .header-cta { display: block; }
  .nav-toggle { display: none; }
  .footer-brand p { white-space: nowrap; }
}
@media (max-width: 400px) {
  .hero { padding: 46px 0 42px; }
  .section { padding: 42px 0; }
  .article { padding: 22px 16px; }
}