/* =============================================================
   硕法律师事务所官网 · 共享样式 v1.1
   风格：墨蓝 + 沉稳金铜 · 衬线标题 · 卡片化 · 移动优先响应式
   v1.1：配色更专业大气（深墨蓝主调 + 低饱和金铜 + 弱光晕）
   ============================================================= */

:root {
  --navy-900: #07101f;
  --navy-800: #0b1c33;
  --navy-700: #14283f;
  --navy-100: #e7ecf3;
  --gold: #c2a56d;
  --gold-600: #9d7f45;
  --gold-soft: #f2ecdf;
  --ink: #1c2836;
  --muted: #5a6675;
  --line: #e2e6ec;
  --bg: #f5f6f8;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(7, 16, 31, 0.07);
  --shadow-lg: 0 16px 40px rgba(7, 16, 31, 0.13);
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--navy-700); text-decoration: none; }
a:hover { color: var(--gold-600); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, .serif {
  font-family: var(--font-serif);
  line-height: 1.35;
  color: var(--navy-900);
}

/* ---------- 章节通用 ---------- */
.section { padding: 80px 0; }
.section.alt { background: var(--card); }

.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: 31px; letter-spacing: 0.5px; margin-bottom: 14px; }
.section-head .sub { color: var(--muted); font-size: 16px; }

.kicker {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 4px;
  color: var(--gold-600);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* 分隔细金线（大气细节） */
.section-head h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 18px auto 0;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(150deg, var(--navy-800), var(--navy-900));
  border: 1px solid rgba(194, 165, 109, 0.5);
  color: var(--gold);
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text .brand-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1.2;
  letter-spacing: 1px;
}

.brand-text .brand-tag {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
}

.main-nav { display: flex; align-items: center; gap: 4px; }

.main-nav a {
  padding: 8px 13px;
  font-size: 15px;
  color: var(--ink);
  border-radius: 8px;
  transition: all 0.2s;
}

.main-nav a:hover { background: var(--navy-100); color: var(--navy-800); }
.main-nav a.active { color: var(--gold-600); font-weight: 600; }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--navy-900);
  color: #fff;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}
.header-cta:hover { background: var(--navy-700); color: var(--gold); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--navy-900);
  cursor: pointer;
  padding: 6px 10px;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1100px 420px at 88% -12%, rgba(194, 165, 109, 0.10), transparent 55%),
    radial-gradient(800px 460px at -8% 112%, rgba(20, 40, 63, 0.6), transparent 60%),
    linear-gradient(155deg, var(--navy-900) 0%, #0a1a2e 55%, var(--navy-700) 100%);
  color: #fff;
  padding: 110px 0 96px;
}

.hero .kicker { color: var(--gold); }

.hero h1 {
  color: #fff;
  font-size: 44px;
  letter-spacing: 1px;
  max-width: 840px;
  margin-bottom: 22px;
}

.hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.hero .hero-sub {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  margin-bottom: 38px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 46px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-gold {
  background: linear-gradient(150deg, #d3b57e, var(--gold-600));
  color: #0b1524;
  box-shadow: 0 8px 22px rgba(157, 127, 69, 0.28);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(157, 127, 69, 0.38); }

.btn-ghost {
  background: transparent;
  color: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.32);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.btn-primary {
  background: var(--navy-900);
  color: #fff;
}
.btn-primary:hover { background: var(--navy-700); color: var(--gold); }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--navy-900);
  color: var(--navy-900);
}
.btn-outline:hover { background: var(--navy-900); color: #fff; }

/* 信任条 */
.trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.trust-bar .trust-item {
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14.5px;
  letter-spacing: 0.3px;
}

.trust-bar .trust-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
}

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(194, 165, 109, 0.55); }

.card h3 { font-size: 19px; margin-bottom: 10px; letter-spacing: 0.3px; }
.card p { color: var(--muted); font-size: 14.5px; }

.card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--gold-soft);
  border: 1px solid rgba(194, 165, 109, 0.4);
  color: var(--gold-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-weight: 700;
}

.card .card-foot {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--navy-700);
  font-weight: 600;
}

/* 痛点卡 */
.pain-card { border-left: 3px solid var(--gold-600); }

/* 服务卡 */
.service-card .how {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: 10px;
  font-size: 13.5px;
  color: var(--ink);
}
.service-card .how strong { color: var(--gold-600); }

/* ---------- 数据条 ---------- */
.data-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold-600);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 38px 20px;
  margin-bottom: 44px;
}

.data-item { text-align: center; padding: 0 8px; }
.data-item + .data-item { border-left: 1px solid var(--line); }

.data-item .num {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1.1;
}

.data-item .num span { color: var(--gold-600); font-size: 22px; }

.data-item .label { color: var(--ink); font-size: 15px; font-weight: 600; margin-top: 6px; }
.data-item .src { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* 资质墙 */
.cert-wall { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

.cert-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold-600);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.cert-card .cert-seal {
  width: 58px;
  height: 58px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(150deg, var(--navy-800), var(--navy-900));
  border: 1px solid rgba(194, 165, 109, 0.5);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.cert-card h3 { font-size: 18px; margin-bottom: 6px; }
.cert-card p { color: var(--muted); font-size: 14px; }
.cert-card .cert-no { font-size: 12.5px; color: var(--gold-600); font-weight: 600; margin-top: 6px; }

.cert-note { text-align: center; color: var(--muted); font-size: 13px; margin-top: 20px; }

/* ---------- 案例卡 ---------- */
.case-card { padding: 0; overflow: hidden; }
.case-card .case-head {
  background: linear-gradient(150deg, var(--navy-800), var(--navy-900));
  color: #fff;
  padding: 24px 26px;
  border-bottom: 2px solid rgba(194, 165, 109, 0.55);
}
.case-card .case-head h3 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.case-card .case-head .case-no {
  font-size: 12.5px;
  color: var(--gold);
  font-family: "Consolas", monospace;
  letter-spacing: 0.5px;
}
.case-card .case-body { padding: 24px 26px; }
.case-card .case-line { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14.5px; }
.case-card .case-line:last-child { margin-bottom: 0; }
.case-card .case-tag {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--gold-600);
  background: var(--gold-soft);
  border-radius: 6px;
  padding: 2px 8px;
  height: fit-content;
  margin-top: 2px;
}
.case-card .case-line p { color: var(--muted); }

.case-note { text-align: center; color: var(--muted); font-size: 13px; margin-top: 22px; }

/* ---------- 洞察卡 ---------- */
.insight-card { display: block; padding: 28px 26px; }
.insight-card h3 { font-size: 17.5px; margin-bottom: 10px; }
.insight-card p { color: var(--muted); font-size: 14px; }
.insight-card .read-more {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--gold-600);
  font-weight: 600;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 19px 54px 19px 24px;
  font-family: var(--font-serif);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--navy-900);
  position: relative;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gold-soft);
  color: var(--gold-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 18px;
  transition: transform 0.2s;
}

.faq-item[open] summary::after { content: "−"; }

.faq-item .faq-a {
  padding: 0 24px 20px;
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- CTA / 联系 ---------- */
.cta-section {
  background:
    radial-gradient(900px 320px at 92% -5%, rgba(194, 165, 109, 0.10), transparent 55%),
    linear-gradient(155deg, var(--navy-900), #0a1a2e);
  color: #fff;
}

.cta-section h2 { color: #fff; }
.cta-section .sub { color: rgba(255, 255, 255, 0.78); }

.scene-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin: 32px 0 44px;
}

.scene-list a {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.92);
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 14px;
  transition: all 0.2s;
}

.scene-list a:hover { background: var(--gold); color: #0b1524; border-color: var(--gold); }

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 44px;
  align-items: start;
}

.cta-info h3 { font-size: 20px; margin-bottom: 18px; letter-spacing: 0.5px; }

/* 深色 CTA 区内的联系信息为白字；联系页浅色区回退为墨色 */
.cta-section .cta-info h3 { color: #fff; }

.cta-info .contact-line {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 15px;
}

.cta-section .cta-info .contact-line { color: rgba(255, 255, 255, 0.86); }

.cta-info .contact-line .ico {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(194, 165, 109, 0.14);
  border: 1px solid rgba(194, 165, 109, 0.35);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.cta-info a { color: var(--gold); }

.contact-form {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--gold-600);
}

.contact-form h3 { font-size: 18px; margin-bottom: 4px; }
.contact-form .form-tip { color: var(--muted); font-size: 13px; margin-bottom: 18px; }

.form-field { margin-bottom: 16px; }
.form-field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}
.form-field label .req { color: #b03a2e; }

.form-field select,
.form-field textarea,
.form-field input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  transition: border-color 0.2s;
}

.form-field select:focus,
.form-field textarea:focus,
.form-field input:focus {
  outline: none;
  border-color: var(--gold-600);
  background: #fff;
}

.form-field textarea { min-height: 96px; resize: vertical; }

.form-note { font-size: 12.5px; color: var(--muted); margin-top: 12px; }

.form-success {
  display: none;
  background: var(--gold-soft);
  border: 1px solid var(--gold-600);
  border-radius: 10px;
  padding: 16px 18px;
  font-size: 14px;
  color: var(--navy-900);
  margin-top: 14px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--navy-900);
  border-top: 2px solid rgba(194, 165, 109, 0.45);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 44px;
}

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 14px;
  font-family: var(--font-serif);
  letter-spacing: 1px;
}

.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: rgba(255, 255, 255, 0.7); }
.site-footer a:hover { color: var(--gold); }

.footer-brand .brand-mark { margin-bottom: 12px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 18px 0;
  text-align: center;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
}

/* ---------- 内页页头横幅 ---------- */
.page-hero {
  background: linear-gradient(155deg, var(--navy-900), #0a1a2e);
  color: #fff;
  padding: 68px 0 60px;
}
.page-hero h1 { color: #fff; font-size: 34px; margin-bottom: 12px; letter-spacing: 1px; }
.page-hero .sub { color: rgba(255, 255, 255, 0.78); max-width: 720px; }
.page-hero .kicker { color: var(--gold); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; font-size: 16px; }
  .header-cta { display: none; }

  .hero { padding: 68px 0 60px; }
  .hero h1 { font-size: 28px; }
  .hero .hero-sub { font-size: 15.5px; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .data-bar { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .data-item:nth-child(3) { border-left: none; }
  .cert-wall { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 24px; }
}