/* ============================================================
   思诚税务官网 v3 — 对齐 CODEX 效果图水准
   配色：土金 #c4a05a + 深蓝 #1a2744
   ============================================================ */

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: #1a1a1a;
  background: #fff;
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: #1a2744; text-decoration: none; transition: color .2s; }
a:hover { color: #0f182a; }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.nav-inner {
  max-width: 1680px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; padding: 0 24px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0;
}
.logo-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, #1a2744, #0f182a);
  color: #fff; font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.logo-cn { font-size: 17px; font-weight: 700; color: #1a1a1a; display: block; line-height: 1.2; }
.logo-en { font-size: 10px; color: #888; letter-spacing: .5px; text-transform: uppercase; display: block; }
.nav-menu {
  display: flex; list-style: none; gap: 2px; flex: 1; justify-content: center; min-width: 0;
}
.nav-menu a {
  padding: 6px 7px; font-size: 13px; white-space: nowrap; color: #444;
  border-radius: 4px; transition: all .2s;
}
.nav-menu a:hover,
.nav-menu a.active { color: #1a2744; background: #eff1f6; }
.nav-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-phone {
  font-size: 14px; color: #1a2744; font-weight: 600;
  display: flex; align-items: center; gap: 4px;
}
.phone-icon { font-size: 15px; }
.btn-nav-cta {
  background: #1a2744; color: #fff !important;
  padding: 7px 18px; border-radius: 6px;
  font-size: 13px; font-weight: 600;
  transition: background .2s;
}
.btn-nav-cta:hover { background: #0f182a; }

/* ===== Hero 首屏分屏 ===== */
.hero {
  position: relative; min-height: 480px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  /* 办公室实景背景 */
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg,
    rgba(15,24,42,.94) 0%,
    rgba(15,24,42,.88) 35%,
    rgba(15,24,42,.50) 70%,
    rgba(15,24,42,.25) 100%);
  z-index: 1;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: 1680px; margin: 0 auto;
  padding: 60px 24px 50px;
  display: grid; grid-template-columns: 1fr 420px; gap: 40px;
  align-items: center;
  min-height: 480px;
}
.hero-left { color: #fff; }
.hero-left h1 {
  font-size: 30px; font-weight: 700; line-height: 1.35;
  margin-bottom: 12px; letter-spacing: .5px;
}
.hero-subtitle {
  font-size: 16px; opacity: .9; margin-bottom: 14px;
  line-height: 1.6;
}
.hero-desc {
  font-size: 14px; opacity: .75; line-height: 1.75;
  margin-bottom: 28px; max-width: 500px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero {
  display: inline-block; padding: 11px 26px; border-radius: 6px;
  font-size: 14px; font-weight: 600; text-align: center;
  transition: all .25s; cursor: pointer;
}
.btn-hero-primary {
  background: #1a2744; color: #fff; border: 2px solid #1a2744;
}
.btn-hero-primary:hover { background: #0f182a; border-color: #0f182a; color: #fff; }
.btn-hero-outline {
  background: transparent; color: #fff;
  border: 2px solid rgba(255,255,255,.5);
}
.btn-hero-outline:hover { border-color: #fff; color: #fff; }

.hero-right { position: relative; }
.hero-photo-frame {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  min-height: 360px;
  display: flex; align-items: flex-end; justify-content: center;
  padding: 24px;
}
.hero-company-badge {
  background: rgba(255,255,255,.95);
  border-radius: 8px; padding: 16px 24px;
  text-align: center; backdrop-filter: blur(8px);
}
.badge-logo {
  font-size: 22px; font-weight: 700; color: #1a2744;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.badge-logo::before {
  content: ""; display: inline-block; width: 24px; height: 24px;
  background: linear-gradient(135deg,#1a2744,#0f182a); border-radius: 50%;
  margin-right: 2px;
}
.badge-name {
  font-size: 11px; color: #999; letter-spacing: 1.5px; text-transform: uppercase;
  margin-top: 2px;
}
.badge-full {
  font-size: 11px; color: #666; margin-top: 4px;
}
.hero-dots {
  display: flex; justify-content: center; gap: 8px; margin-top: 16px;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,.3);
  cursor: pointer; transition: background .2s;
}
.dot.active { background: #fff; }

/* ===== 三枚资质徽章 ===== */
.badges {
  padding: 32px 0; background: #fafafa;
  border-bottom: 1px solid #eee;
}
.badges-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.badge-item {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px; background: #fff;
  border-radius: 8px; border: 1px solid #eee;
  transition: box-shadow .2s;
}
.badge-item:hover { box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.badge-icon {
  font-size: 28px; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px; flex-shrink: 0;
}
.badge-icon-gold { background: #fef9ec; color: #c4a05a; }
.badge-icon-shield { background: #eff3f8; color: #1a2744; }
.badge-icon-doc { background: #f0f4ff; color: #3b5998; }
.badge-text strong { display: block; font-size: 14px; color: #1a1a1a; margin-bottom: 2px; }
.badge-text span { font-size: 12px; color: #888; }

/* ===== 板块标题 ===== */
.section-head {
  padding: 48px 0 16px; text-align: center;
}
.section-head h2 {
  font-size: 26px; font-weight: 700; color: #1a1a1a;
  margin-bottom: 10px;
}
.section-line {
  width: 48px; height: 3px; background: #c4a05a;
  margin: 0 auto; border-radius: 2px;
}

/* ===== 六大服务卡片 ===== */
.services-grid-section { padding: 20px 0 44px; }
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin-bottom: 28px;
}
.svc-card {
  background: #fff; border: 1px solid #e8e8e8; border-radius: 10px;
  padding: 28px 22px; transition: all .25s;
  border-top: 3px solid transparent;
}
.svc-card:hover {
  border-top-color: #1a2744;
  box-shadow: 0 4px 20px rgba(26,39,68,.08);
  transform: translateY(-2px);
}
.svc-icon {
  width: 44px; height: 44px;
  background: #eff1f6; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px; color: #1a2744;
}
.svc-icon svg { width: 26px; height: 26px; }
.svc-card h3 {
  font-size: 16px; font-weight: 700; color: #1a1a1a;
  margin-bottom: 8px;
}
.svc-card p {
  font-size: 13.5px; color: #666; line-height: 1.7;
}

/* 绿色提示条 */
.notice-bar {
  display: flex; align-items: center; gap: 10px;
  background: #eff1f6; border: 1px solid #d0d8e8;
  border-radius: 8px; padding: 14px 20px;
  font-size: 14px; color: #1a2744;
}
.notice-icon { font-size: 20px; }

/* ===== 各板块 CTA 区 ===== */
.section-cta {
  text-align: center; margin-top: 20px;
}
.btn-section-cta {
  display: inline-block; padding: 10px 24px;
  border: 1.5px solid #1a2744; border-radius: 6px;
  color: #1a2744; font-size: 14px; font-weight: 600;
  transition: all .25s;
}
.btn-section-cta:hover {
  background: #1a2744; color: #fff;
}

/* ===== 基础业务紧凑条（不稀释稽查定位） ===== */
.base-services-strip-section {
  padding: 20px 0; background: #fafafa;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
}
.base-services-strip {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 6px;
  font-size: 14px; color: #666;
}
.base-strip-label {
  font-weight: 600; color: #444;
}
.base-strip-sep {
  color: #ccc; margin: 0 2px;
}
.base-services-strip a {
  color: #1a2744; font-weight: 500;
  padding: 2px 6px; border-radius: 4px;
  transition: all .2s;
}
.base-services-strip a:hover {
  background: #eff1f6; color: #0f182a;
}
.base-strip-note {
  color: #999; font-size: 13px;
}

/* ===== 六步法流程图 ===== */
.process-section {
  background: #1a2744; color: #fff;
  padding: 48px 0;
}
.process-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.process-inner h2 {
  text-align: center; font-size: 24px; font-weight: 700;
  margin-bottom: 36px; letter-spacing: .5px;
}
.process-steps {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 0; flex-wrap: wrap;
}
.step {
  flex: 0 0 auto; width: 140px; text-align: center;
}
.step-num {
  width: 42px; height: 42px; border-radius: 50%;
  background: #fff; color: #1a2744;
  font-size: 19px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 10px;
}
.step h4 {
  font-size: 14.5px; font-weight: 600; margin-bottom: 6px;
}
.step p {
  font-size: 12px; line-height: 1.65; opacity: .88;
}
.step-arrow {
  font-size: 22px; color: #c4a05a;
  margin-top: 18px; padding: 0 4px;
  flex-shrink: 0;
}

/* ===== 案例表格 ===== */
.case-table-section { padding: 52px 0; background: #fafafa; }
.case-table-section h2 {
  text-align: center; font-size: 24px; font-weight: 700;
  margin-bottom: 28px; color: #1a1a1a;
}
.case-table {
  width: 100%; border-collapse: collapse;
  background: #fff; border-radius: 10px; overflow: hidden;
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
}
.case-table th {
  background: #f5f5f5; color: #333; font-size: 14px;
  font-weight: 600; padding: 14px 16px;
  text-align: left; border-bottom: 2px solid #e0e0e0;
}
.case-table td {
  padding: 16px; font-size: 13.5px; line-height: 1.75;
  color: #444; border-bottom: 1px solid #f0f0f0;
  vertical-align: top;
}
.check-item { color: #1a2744; font-weight: 600; display: block; margin-bottom: 4px; }
.case-note {
  font-size: 12px; color: #999; margin-top: 12px; font-style: italic;
}

/* ===== 陈素婷 IP 区 ===== */
.ip-section { padding: 56px 0; background: #fff; }
.ip-inner {
  display: grid; grid-template-columns: 260px 1fr; gap: 40px;
  align-items: start;
}
.ip-photo img {
  width: 100%; border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
}
.ip-info h2 {
  font-size: 26px; font-weight: 700; color: #1a1a1a; margin-bottom: 10px;
}
.ip-titles { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.ip-title-tag {
  background: #fef9ec; color: #b07d28;
  padding: 4px 12px; border-radius: 20px;
  font-size: 12.5px; font-weight: 600;
}
.ip-intro {
  font-size: 14px; color: #666; margin-bottom: 12px;
}
.ip-desc {
  font-size: 14px; color: #555; line-height: 1.85;
  margin-bottom: 22px;
}
.btn-ip {
  display: inline-block; background: #1a2744; color: #fff;
  padding: 12px 30px; border-radius: 6px;
  font-size: 15px; font-weight: 600;
  transition: background .2s;
}
.btn-ip:hover { background: #0f182a; color: #fff; }

/* ===== 资质证书展示 ===== */
.certs-section { padding: 52px 0; background: #fafafa; }
.certs-section h2 {
  text-align: center; font-size: 24px; font-weight: 700;
  margin-bottom: 32px; color: #1a1a1a;
}
.certs-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.cert-card {
  background: #fff; border: 1px solid #e0e0e0; border-radius: 10px;
  padding: 14px; text-align: center;
  transition: box-shadow .2s;
}
.cert-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.cert-card img {
  width: 100%; height: 160px; object-fit: contain;
  border-radius: 6px; border: 1px solid #f0f0f0;
  margin-bottom: 10px; background: #fff;
}
.cert-card p { font-size: 13px; color: #555; font-weight: 500; }

/* ===== FAQ 手风琴 ===== */
.faq-section { padding: 52px 0; background: #fff; }
.faq-section h2 {
  text-align: center; font-size: 24px; font-weight: 700;
  margin-bottom: 28px; color: #1a1a1a;
}
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid #e8e8e8; border-radius: 8px;
  margin-bottom: 10px; overflow: hidden;
  transition: border-color .2s;
}
.faq-item[open] { border-color: #1a2744; }
.faq-item summary {
  padding: 16px 20px; cursor: pointer;
  font-size: 15px; font-weight: 600; color: #1a1a1a;
  list-style: none; display: flex; align-items: center;
  justify-content: space-between;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 20px; color: #1a2744;
  font-weight: 300; transition: transform .2s;
}
.faq-item[open] summary::after { content: "−"; }
.faq-body {
  padding: 0 20px 16px; border-top: 1px solid #f0f0f0;
  margin-top: -1px;
}
.faq-body p { font-size: 14px; color: #555; line-height: 1.8; padding-top: 14px; }

/* ===== Footer 三栏 ===== */
.site-footer {
  background: #0d1a2a; color: #ccc;
  padding: 40px 0 0;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.footer-col h4 {
  font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 12px;
}
.footer-col p {
  font-size: 13.5px; line-height: 1.8; opacity: .85;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  margin-top: 28px; padding: 16px 24px;
  text-align: center;
  max-width: 1100px; margin-left: auto; margin-right: auto;
}
.footer-bottom p { font-size: 12.5px; opacity: .6; margin-bottom: 4px; }
.footer-disclaimer { font-size: 11.5px !important; }

/* ===== 回到顶部 ===== */
.back-top {
  position: fixed; right: 28px; bottom: 28px;
  width: 44px; height: 44px; border-radius: 50%;
  background: #1a2744; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; box-shadow: 0 3px 12px rgba(26,39,68,.3);
  transition: all .25s; z-index: 999;
  opacity: 0; visibility: hidden;
}
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover { background: #0f182a; transform: translateY(-2px); }

/* ===== 响应式基础 ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-right { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { gap: 8px; }
  .step { width: 120px; }
  .step-arrow { display: none; }
  .ip-inner { grid-template-columns: 1fr; text-align: center; }
  .ip-photo { max-width: 220px; margin: 0 auto; }
  .ip-titles { justify-content: center; }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .nav-menu { display: none; }
  .urgent-cta-inner { flex-direction: column; text-align: center; }
  .urgent-cta-list { justify-content: center; }
  .ip-expertise-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .services-grid { grid-template-columns: 1fr; }
  .badges-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .hero-left h1 { font-size: 24px; }
  .case-table { font-size: 12px; }
  .case-table th, .case-table td { padding: 10px 8px; }
}

/* ===== 风险诊断页 ===== */
.risk-check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.risk-check-card {
  display: block;
  cursor: pointer;
  border: 2px solid #e8e8e8;
  border-radius: 10px;
  padding: 20px;
  transition: border-color .2s, background .2s;
  position: relative;
}
.risk-check-card:hover { border-color: #c4a05a; }
.risk-check-card input[type="radio"] {
  position: absolute; top: 16px; right: 16px;
  width: 20px; height: 20px; accent-color: #1a2744;
}
.risk-check-card input[type="radio"]:checked ~ .risk-check-content {
  color: #1a2744;
}
.risk-check-card:has(input:checked) {
  border-color: #1a2744;
  background: #f8f9fc;
}
.risk-check-content h3 {
  font-size: 16px; margin-bottom: 6px; color: #1a2744;
}
.risk-check-content p {
  font-size: 13px; color: #666;
}
.risk-contact-form {
  max-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.risk-input {
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
.risk-input:focus { outline: none; border-color: #1a2744; }
.risk-textarea {
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}
.risk-textarea:focus { outline: none; border-color: #1a2744; }

/* ===== 第一屏紧急咨询入口 ===== */
.urgent-cta {
  background: #1a2744;
  padding: 28px 0;
}
.urgent-cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px;
}
.urgent-cta-left h2 {
  font-size: 20px; font-weight: 700; color: #fff;
  margin-bottom: 12px;
}
.urgent-cta-list {
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  list-style: none; padding: 0; margin: 0;
}
.urgent-cta-list li {
  font-size: 14px; color: #c4a05a;
  font-weight: 500;
}
.urgent-cta-right {
  display: flex; flex-direction: column; gap: 10px; align-items: flex-end;
  flex-shrink: 0;
}
.btn-urgent-cta {
  display: inline-block;
  background: #c4a05a; color: #1a2744;
  padding: 14px 32px; border-radius: 8px;
  font-size: 15px; font-weight: 700;
  white-space: nowrap;
  transition: all .25s;
}
.btn-urgent-cta:hover { background: #d4b06a; color: #1a2744; transform: translateY(-1px); }
.btn-urgent-phone {
  font-size: 14px; color: rgba(255,255,255,.8);
  font-weight: 500;
}
.btn-urgent-phone:hover { color: #fff; }

/* ===== 陈素婷 IP区 - 处理过的问题类型 ===== */
.ip-expertise {
  margin-bottom: 22px;
  background: #f8f9fc;
  border: 1px solid #e8edf3;
  border-radius: 10px;
  padding: 20px 22px;
}
.ip-expertise h3 {
  font-size: 15px; font-weight: 700; color: #1a2744;
  margin-bottom: 14px;
}
.ip-expertise-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
}
.ip-expertise-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13.5px; color: #555; line-height: 1.6;
}
.ip-expertise-icon {
  font-size: 18px; flex-shrink: 0; line-height: 1.4;
}

/* ===== 风险诊断页移动端 ===== */
@media (max-width: 560px) {
  .risk-check-grid { grid-template-columns: 1fr; }
}