/* ===== 税务帮 · 工具引流型官网 ===== */
:root {
  --red: #a63a32;
  --red-deep: #8c2f28;
  --red-light: #fdf3f2;
  --ink: #241b18;
  --ink-soft: #6b5d57;
  --paper: #faf7f5;
  --card: #ffffff;
  --line: #eadfd9;
  --gold: #c8a06a;
  --ok: #2e7d52;
  --warn: #b0762a;
  --err: #a63a32;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
}

.container { width: min(1120px, 92%); margin: 0 auto; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== 通用组件 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 10px 22px; border-radius: 8px;
  font-family: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-deep); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(166,58,50,.28); }
.btn-ghost { border-color: var(--line); background: #fff; color: var(--ink); }
.btn-ghost:hover { border-color: var(--red); color: var(--red); }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { width: 100%; }

.sec-head { text-align: center; margin-bottom: 42px; }
.sec-head h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 900; }
.sec-head p { color: var(--ink-soft); margin-top: 10px; font-size: 15px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,247,245,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; padding: 14px 0; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-seal {
  width: 40px; height: 40px; border-radius: 9px;
  background: var(--red); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 900;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.22);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text b { font-size: 19px; font-weight: 900; letter-spacing: 2px; }
.logo-text i { font-style: normal; font-size: 11px; color: var(--ink-soft); letter-spacing: 1px; }

.nav { display: flex; gap: 24px; margin-left: auto; }
.nav a { font-size: 15px; color: var(--ink-soft); position: relative; padding: 4px 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--red); transition: width .2s ease;
}
.nav a:hover, .nav a.active { color: var(--red); }
.nav a:hover::after, .nav a.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.hd-tel { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-soft); white-space: nowrap; }
.hd-tel:hover { color: var(--red); }
.menu-toggle {
  display: none; width: 40px; height: 40px;
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
  cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.menu-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { padding: 64px 0 72px; background: var(--paper); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }

.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 3px;
  color: var(--red); border: 1px solid var(--red);
  padding: 4px 14px; border-radius: 999px; margin-bottom: 18px;
}
.hero-title { font-size: clamp(32px, 5vw, 52px); font-weight: 900; line-height: 1.25; letter-spacing: 1px; }
.accent { color: var(--red); }
.hero-sub { color: var(--ink-soft); font-size: 16px; margin: 18px 0 26px; max-width: 460px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 18px; margin-top: 26px; flex-wrap: wrap; }
.hero-trust li { font-size: 13px; color: var(--ink-soft); }

/* Hero 内嵌快速版工具 */
.mini-tool {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: 0 24px 60px -30px rgba(36,27,24,.25);
  overflow: hidden;
}
.mini-tool-head {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 20px; border-bottom: 1px solid var(--line);
  font-size: 14px; font-weight: 700;
  background: linear-gradient(180deg, #fff, var(--red-light));
}
.mini-tool-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.mini-tool-body { padding: 22px; }

.field { display: block; margin-bottom: 16px; }
.field span { display: block; font-size: 13px; color: var(--ink-soft); margin-bottom: 7px; }
.field input {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-family: inherit; font-size: 16px; background: #fff; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(166,58,50,.1); }

.mini-result { margin-top: 18px; border-top: 1px dashed var(--line); padding-top: 16px; }
.mr-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mr-item {
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px; text-align: center;
}
.mr-item.win { border-color: var(--ok); background: #f0f7f2; }
.mr-item.lose { border-color: #e5d5d3; }
.mr-label { display: block; font-size: 12px; color: var(--ink-soft); margin-bottom: 4px; }
.mr-val { font-size: 19px; font-weight: 900; }
.mr-val small { font-size: 12px; font-weight: 400; color: var(--ink-soft); }
.mr-tip {
  margin-top: 12px; padding: 10px 12px; border-radius: 8px;
  font-size: 13px; background: var(--red-light); color: var(--red-deep);
}
.mr-link { display: inline-block; margin-top: 10px; font-size: 13px; color: var(--red); font-weight: 600; }

/* ===== 工具矩阵 ===== */
.tools-section { padding: 64px 0; background: #fff; }
.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tool-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 24px; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.tool-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -24px rgba(36,27,24,.3); border-color: var(--red); }
.tool-card-soon { opacity: .68; cursor: default; }
.tool-card-soon:hover { transform: none; box-shadow: none; border-color: var(--line); }
.tc-icon { font-size: 30px; }
.tool-card h3 { font-size: 19px; font-weight: 900; }
.tool-card p { font-size: 14px; color: var(--ink-soft); flex: 1; }
.tc-tag {
  align-self: flex-start; font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: var(--red-light); color: var(--red); font-weight: 700;
}
.tc-tag-soon { background: #f1ede9; color: var(--ink-soft); }

/* ===== 服务 ===== */
.services-section { padding: 64px 0; }
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.svc-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px 26px; position: relative; overflow: hidden;
}
.svc-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--red), var(--gold));
}
.svc-num { font-size: 13px; color: var(--gold); font-weight: 700; letter-spacing: 2px; }
.svc-card h3 { font-size: 20px; font-weight: 900; margin: 6px 0 10px; }
.svc-card p { font-size: 14px; color: var(--ink-soft); }
.svc-price { display: inline-block; margin-top: 16px; font-size: 13px; color: var(--red); font-weight: 700; }

/* ===== 为什么 ===== */
.why-section { padding: 64px 0; background: #fff; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.why-item { padding: 4px 6px; }
.why-item h3 { font-size: 18px; font-weight: 900; margin-bottom: 8px; }
.why-item h3::before { content: "— "; color: var(--red); }
.why-item p { font-size: 14px; color: var(--ink-soft); }

/* ===== 联系 ===== */
.contact-section { padding: 72px 0; }
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.contact-copy h2 { font-size: clamp(26px, 3.6vw, 36px); font-weight: 900; margin-bottom: 14px; }
.contact-copy p { color: var(--ink-soft); margin-bottom: 24px; max-width: 440px; }
.contact-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px; display: flex; flex-direction: column; gap: 12px;
}
.cc-row { font-size: 15px; color: var(--ink); }
.cc-note { margin-top: 8px; font-size: 13px; color: var(--gold); text-align: center; }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; background: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand b { display: block; font-size: 17px; }
.footer-brand span:last-child { font-size: 12px; color: var(--ink-soft); }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 16px; }
.footer-nav a { font-size: 14px; color: var(--ink-soft); }
.footer-nav a:hover { color: var(--red); }
.footer-note { font-size: 12px; color: #a99e98; max-width: 720px; }

/* ===== 计税工具页通用 ===== */
.tool-hero { background: #fff; border-bottom: 1px solid var(--line); padding: 40px 0 30px; }
.tool-hero h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 900; margin-bottom: 8px; }
.tool-hero .crumb { font-size: 13px; color: var(--ink-soft); margin-bottom: 10px; }
.tool-hero .crumb a { color: var(--ink-soft); }
.tool-hero .crumb a:hover { color: var(--red); }
.tool-hero .lede { color: var(--ink-soft); font-size: 15px; max-width: 640px; }

.tool-layout { display: grid; grid-template-columns: 380px 1fr; gap: 28px; padding: 36px 0 64px; align-items: start; }

.tool-panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 24px; position: sticky; top: 84px;
}
.tool-panel h2 { font-size: 17px; font-weight: 900; margin-bottom: 16px; }
.tool-panel .field + .field { margin-top: 14px; }

.hint { font-size: 12px; color: #a99e98; margin-top: 4px; }

.result-area { display: flex; flex-direction: column; gap: 20px; }

.compare-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px; overflow: hidden; position: relative;
}
.compare-card.win { border-color: var(--ok); box-shadow: 0 12px 30px -18px rgba(46,125,82,.4); }
.compare-card.lose { opacity: .82; }
.cc-badge {
  position: absolute; top: 0; right: 0; padding: 4px 14px;
  font-size: 12px; font-weight: 700; color: #fff; border-radius: 0 0 0 10px;
}
.cc-badge.ok { background: var(--ok); }
.cc-badge.no { background: #b3a8a2; }
.cc-badge.warn { background: var(--warn); }
.compare-card h3 { font-size: 17px; font-weight: 900; margin-bottom: 14px; }
.kv { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.kv:last-of-type { border-bottom: none; }
.kv b { font-variant-numeric: tabular-nums; }
.kv .k { color: var(--ink-soft); }
.big-num { display: flex; align-items: baseline; gap: 8px; margin: 10px 0 4px; }
.big-num b { font-size: 34px; font-weight: 900; color: var(--red); font-variant-numeric: tabular-nums; }
.big-num small { font-size: 13px; color: var(--ink-soft); }

.verdict {
  background: linear-gradient(135deg, #f0f7f2, #fff); border: 1px solid #cfe3d6;
  border-radius: 14px; padding: 22px 26px;
}
.verdict.warn { background: linear-gradient(135deg, #fdf6ec, #fff); border-color: #e8d5b5; }
.verdict h3 { font-size: 17px; font-weight: 900; margin-bottom: 8px; }
.verdict p { font-size: 14px; color: var(--ink-soft); }
.verdict .delta { font-size: 15px; font-weight: 700; color: var(--red); }

.zone-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
.zone-table th, .zone-table td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
.zone-table th { background: var(--paper); font-weight: 700; }
.zone-table td.num { text-align: right; font-variant-numeric: tabular-nums; }

.article-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px 28px; }
.article-card h3 { font-size: 17px; font-weight: 900; margin-bottom: 12px; }
.article-card p { font-size: 14px; color: var(--ink-soft); margin-bottom: 10px; }
.article-card .formula {
  background: var(--paper); border-left: 3px solid var(--gold);
  padding: 10px 14px; border-radius: 0 8px 8px 0;
  font-size: 13px; margin: 12px 0; line-height: 1.9;
}
.article-card ol { padding-left: 20px; font-size: 14px; color: var(--ink-soft); }
.article-card ol li { margin-bottom: 6px; }

.tool-nav-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px; }
.tnc {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px;
  background: var(--card); transition: border-color .15s ease;
}
.tnc:hover { border-color: var(--red); }
.tnc b { display: block; font-size: 15px; margin-bottom: 4px; }
.tnc span { font-size: 13px; color: var(--ink-soft); }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .nav {
    position: fixed; top: 69px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px 5%;
    transform: translateY(-130%); transition: transform .25s ease; z-index: 49;
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 12px 0; border-bottom: 1px dashed var(--line); font-size: 16px; }
  .nav a:last-child { border-bottom: none; }
  .menu-toggle { display: flex; }
  .hd-tel span, .hd-tel svg { display: none; }
  .hd-tel { font-size: 0; }
  .header-actions .btn { padding: 8px 14px; font-size: 13px; }

  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 44px 0 56px; }
  .tool-grid, .svc-grid, .why-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .tool-layout { grid-template-columns: 1fr; }
  .tool-panel { position: static; }
  .tool-nav-cards { grid-template-columns: 1fr; }
  .footer-nav { gap: 14px; }
}

@media (max-width: 480px) {
  .logo-text i { display: none; }
  .mr-row { grid-template-columns: 1fr; }
  .big-num b { font-size: 28px; }
  .hero-cta .btn { width: 100%; }
  .tool-panel { padding: 18px; }
  .compare-card { padding: 20px; }
}

/* ===== 打印(计税结果可打印留档) ===== */
@media print {
  .site-header, .hero-cta, .contact-section, .site-footer, .tool-panel { display: none; }
  body { background: #fff; }
}