/* ============================================================
   上海盛沃律师事务所 · 知识产权纠纷法律咨询落地页
   主色 #A61C2E ｜ 点缀 #C9A063 ｜ 深色 #1A1214
   ============================================================ */
:root {
  --primary: #A61C2E;
  --primary-dark: #8A1525;
  --primary-deep: #6E0F1D;
  --gold: #C9A063;
  --gold-light: #E3C88F;
  --ink: #2B2225;
  --ink-soft: #57494D;
  --paper: #FFFFFF;
  --paper-gray: #F7F4F1;
  --line: #EDE4DE;
  --dark: #1A1214;
  --dark-soft: #24181B;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 10px rgba(107, 24, 35, 0.08);
  --shadow-md: 0 10px 30px rgba(107, 24, 35, 0.12);
  --shadow-lg: 0 24px 60px rgba(107, 24, 35, 0.18);
  --radius: 14px;
  --font-serif: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: 0 10px 26px rgba(166, 28, 46, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(166, 28, 46, 0.45); }
.btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.16); border-color: var(--gold-light); }
.btn-call {
  background: linear-gradient(135deg, var(--gold) 0%, #B3864A 100%);
  color: #3A2410;
  font-size: 20px;
  padding: 16px 42px;
  box-shadow: 0 12px 30px rgba(201, 160, 99, 0.4);
}
.btn-call svg { width: 22px; height: 22px; }
.btn-call:hover { transform: translateY(-2px); box-shadow: 0 18px 40px rgba(201, 160, 99, 0.5); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: all 0.35s var(--ease);
  background: rgba(26, 18, 20, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.site-header.scrolled {
  background: rgba(20, 11, 13, 0.95);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(201, 160, 99, 0.25);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: 1px solid rgba(201, 160, 99, 0.5);
  border-radius: 12px;
  color: var(--gold-light);
  box-shadow: 0 6px 16px rgba(166, 28, 46, 0.4);
}
.brand-mark svg { width: 26px; height: 26px; }
.brand-text {
  display: flex;
  flex-direction: column;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 4px;
  line-height: 1.25;
}
.brand-text em {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 400;
  color: var(--gold);
  letter-spacing: 2px;
}

.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  transition: color 0.25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--gold-light); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 10px;
  padding: 9px 20px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--gold) 0%, #B3864A 100%);
  color: #3A2410 !important;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 1px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}
.nav-phone svg { width: 17px; height: 17px; }
.nav-phone::after { display: none; }
.nav-phone:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(0, 0, 0, 0.3); color: #2E1C0A !important; }

.menu-toggle { display: none; z-index: 110; }
.nav-overlay { display: none; }

/* ---------- Hero 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: radial-gradient(1200px 700px at 75% 20%, rgba(201, 160, 99, 0.16), transparent 60%),
    radial-gradient(900px 600px at 15% 85%, rgba(166, 28, 46, 0.5), transparent 65%),
    linear-gradient(160deg, #241318 0%, var(--dark) 55%, #140C0E 100%);
  color: var(--white);
  overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 90px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-ring {
  position: absolute;
  border: 1px solid rgba(201, 160, 99, 0.22);
  border-radius: 50%;
  animation: ringFloat 12s ease-in-out infinite;
}
.ring-1 { width: 560px; height: 560px; right: -120px; top: -80px; }
.ring-2 { width: 380px; height: 380px; right: 40px; top: 40px; border-color: rgba(166, 28, 46, 0.5); animation-delay: -4s; }
.ring-3 { width: 240px; height: 240px; right: 160px; top: 140px; border-color: rgba(201, 160, 99, 0.35); animation-delay: -8s; }
@keyframes ringFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}

.hero-inner { position: relative; z-index: 2; text-align: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 22px;
  border-radius: 50px;
  border: 1px solid rgba(201, 160, 99, 0.45);
  background: rgba(201, 160, 99, 0.1);
  color: var(--gold-light);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 26px;
}
.hero-badge svg { width: 15px; height: 15px; }
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: 6px;
  line-height: 1.3;
  background: linear-gradient(180deg, #FFFFFF 40%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  margin-bottom: 18px;
}
.hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.6vw, 24px);
  color: var(--gold-light);
  letter-spacing: 5px;
  margin-bottom: 20px;
}
.hero-desc {
  max-width: 760px;
  margin: 0 auto 38px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  letter-spacing: 0.5px;
  line-height: 2;
}
.hero-actions { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-bottom: 46px; }

.hero-contact {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 14px 32px 14px 18px;
  border-radius: 60px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(201, 160, 99, 0.3);
  backdrop-filter: blur(6px);
}
.hero-contact-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--gold-light);
  box-shadow: 0 6px 16px rgba(166, 28, 46, 0.5);
}
.hero-contact-icon svg { width: 22px; height: 22px; }
.hero-contact-text { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.4; }
.hero-contact-text span { font-size: 12px; color: rgba(255, 255, 255, 0.65); letter-spacing: 2px; }
.hero-contact-text a { font-size: 24px; font-weight: 700; color: var(--white); letter-spacing: 1px; }
.hero-contact-text a:hover { color: var(--gold-light); }

/* ---------- 数字条 ---------- */
.stats { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%); }
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 0;
}
.stat-item { text-align: center; color: var(--white); min-width: 0; }
.stat-item strong {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: 3px;
  line-height: 1.4;
  white-space: nowrap;
}
.stat-item strong.stat-phone { font-size: clamp(20px, 2.6vw, 28px); color: var(--gold-light); }
.stat-item strong.stat-phone a:hover { color: var(--white); }
.stat-item .stat-label {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  letter-spacing: 2px;
  margin-top: 4px;
  white-space: nowrap;
}
.stat-divider { width: 1px; height: 44px; background: rgba(255, 255, 255, 0.28); flex-shrink: 0; }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section.dark { background: var(--dark); color: var(--white); }
.section-head { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--primary);
  background: rgba(166, 28, 46, 0.08);
  border: 1px solid rgba(166, 28, 46, 0.2);
  margin-bottom: 18px;
}
.section-tag-light {
  color: var(--gold-light);
  background: rgba(201, 160, 99, 0.12);
  border-color: rgba(201, 160, 99, 0.4);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.4vw, 44px);
  letter-spacing: 3px;
  line-height: 1.4;
  margin-bottom: 16px;
  position: relative;
}
.section-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin: 18px auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
}
.dark .section-title::after { background: linear-gradient(90deg, var(--gold), var(--primary)); }
.section-intro { color: var(--ink-soft); font-size: 15px; letter-spacing: 1px; }
.dark .section-intro { color: rgba(255, 255, 255, 0.6); }

/* ---------- 关于律所 ---------- */
.about { background: var(--paper); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 60px;
  align-items: center;
}
.about-image { display: flex; justify-content: center; }
.about-frame {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  background:
    radial-gradient(500px 400px at 80% 10%, rgba(201, 160, 99, 0.16), transparent 60%),
    linear-gradient(160deg, #2A161B 0%, #170E10 100%);
  border: 1px solid rgba(201, 160, 99, 0.28);
  box-shadow: var(--shadow-lg);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.about-frame svg { width: 120px; height: 120px; color: var(--gold); opacity: 0.85; }
.about-frame em {
  position: absolute;
  bottom: 26px;
  font-style: normal;
  font-family: var(--font-serif);
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 6px;
  font-size: 14px;
}
.about-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 14px, rgba(201, 160, 99, 0.03) 14px 15px);
}
.about-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 2px;
  margin-bottom: 12px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}
.about-content h3 + p { margin-bottom: 24px; }
.about-content p {
  color: var(--ink-soft);
  font-size: 15px;
  letter-spacing: 0.5px;
  text-align: justify;
}
.about-content p strong { color: var(--primary); }
.about-points { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.about-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--paper-gray);
  border: 1px solid var(--line);
  transition: all 0.3s var(--ease);
}
.about-points li:hover { border-color: rgba(166, 28, 46, 0.35); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.about-points svg { width: 17px; height: 17px; color: var(--primary); flex-shrink: 0; }

/* ---------- 常见困境 ---------- */
.pain { background: var(--paper-gray); }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pain-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px 28px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: all 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}
.pain-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.pain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(166, 28, 46, 0.25); }
.pain-card:hover::before { transform: scaleX(1); }
.pain-icon {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: rgba(166, 28, 46, 0.08);
  color: var(--primary);
  margin-bottom: 20px;
  transition: all 0.35s var(--ease);
}
.pain-card:hover .pain-icon { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--gold-light); }
.pain-icon svg { width: 26px; height: 26px; }
.pain-card h3 { font-family: var(--font-serif); font-size: 19px; letter-spacing: 1px; margin-bottom: 10px; }
.pain-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.9; }

/* ---------- 纠纷类型（深色） ---------- */
.types {
  background: radial-gradient(900px 500px at 90% 0%, rgba(166, 28, 46, 0.3), transparent 60%),
    linear-gradient(170deg, var(--dark-soft) 0%, var(--dark) 60%, #130C0E 100%);
}
.types-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.type-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(201, 160, 99, 0.18);
  border-radius: var(--radius);
  padding: 30px 24px;
  position: relative;
  transition: all 0.35s var(--ease);
  overflow: hidden;
}
.type-card::after {
  content: "";
  position: absolute;
  right: -40px; top: -40px;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 160, 99, 0.14), transparent 70%);
  transition: all 0.4s var(--ease);
}
.type-card:hover { transform: translateY(-6px); background: rgba(166, 28, 46, 0.16); border-color: rgba(201, 160, 99, 0.45); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35); }
.type-card:hover::after { transform: scale(1.6); }
.type-num {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--gold) 20%, rgba(201, 160, 99, 0.3) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 18px;
}
.type-card h3 { font-family: var(--font-serif); font-size: 18px; letter-spacing: 1.5px; color: var(--white); margin-bottom: 14px; }
.type-card ul li {
  position: relative;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.72);
  padding-left: 16px;
  line-height: 2.1;
}
.type-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 14px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.7;
}

/* ---------- 法律知识 ---------- */
.knowledge { background: var(--paper); }
.knowledge-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}
.knowledge-main {
  background: var(--paper-gray);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow-sm);
}
.knowledge-main > h3 {
  font-family: var(--font-serif);
  font-size: 21px;
  letter-spacing: 2px;
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}
.route-list { display: flex; flex-direction: column; gap: 0; }
.route-list li { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px dashed rgba(166, 28, 46, 0.18); }
.route-list li:last-child { border-bottom: none; padding-bottom: 0; }
.route-step {
  flex-shrink: 0;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 6px 14px rgba(166, 28, 46, 0.3);
}
.route-list h4 { font-family: var(--font-serif); font-size: 17px; letter-spacing: 1px; margin-bottom: 6px; }
.route-list p { font-size: 14px; color: var(--ink-soft); line-height: 1.9; }

.knowledge-law {
  background: linear-gradient(170deg, var(--dark-soft) 0%, var(--dark) 100%);
  border-radius: var(--radius);
  padding: 40px 34px;
  color: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: calc(var(--header-h) + 24px);
}
.knowledge-law > h3 {
  font-family: var(--font-serif);
  font-size: 21px;
  letter-spacing: 2px;
  margin-bottom: 26px;
  padding-left: 16px;
  border-left: 4px solid var(--gold);
}
.law-list { display: flex; flex-direction: column; gap: 14px; }
.law-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(201, 160, 99, 0.16);
  transition: all 0.3s var(--ease);
}
.law-list li:hover { background: rgba(201, 160, 99, 0.1); border-color: rgba(201, 160, 99, 0.4); }
.law-list svg { width: 24px; height: 24px; color: var(--gold); flex-shrink: 0; }
.law-list div { display: flex; flex-direction: column; line-height: 1.5; }
.law-list strong { font-size: 14.5px; color: var(--white); letter-spacing: 0.5px; }
.law-list span { font-size: 12.5px; color: rgba(255, 255, 255, 0.6); }
.law-tip { margin-top: 20px; font-size: 12.5px; color: rgba(255, 255, 255, 0.55); line-height: 1.8; border-top: 1px dashed rgba(201, 160, 99, 0.3); padding-top: 16px; }

/* ---------- 解决路径 ---------- */
.process {
  background: radial-gradient(800px 400px at 10% 100%, rgba(166, 28, 46, 0.35), transparent 60%),
    linear-gradient(170deg, #130C0E 0%, var(--dark) 50%, var(--dark-soft) 100%);
}
.process-steps { display: flex; flex-direction: column; gap: 16px; max-width: 880px; margin: 0 auto; }
.step-card {
  position: relative;
  display: flex;
  gap: 26px;
  padding: 30px 34px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(201, 160, 99, 0.18);
  border-radius: var(--radius);
  transition: all 0.35s var(--ease);
  overflow: hidden;
}
.step-card:hover { background: rgba(166, 28, 46, 0.14); border-color: rgba(201, 160, 99, 0.4); transform: translateX(10px); }
.step-dot {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  width: 58px; height: 58px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--gold-light);
  box-shadow: 0 8px 20px rgba(166, 28, 46, 0.45);
}
.step-dot svg { width: 26px; height: 26px; }
.step-line {
  position: absolute;
  left: 58px; top: 88px; bottom: -36px;
  width: 2px;
  background: linear-gradient(180deg, rgba(201, 160, 99, 0.5), rgba(201, 160, 99, 0.1));
}
.step-card:last-child .step-line { display: none; }
.step-body { padding-top: 4px; }
.step-num {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--gold);
  font-weight: 700;
}
.step-body h3 { font-family: var(--font-serif); font-size: 20px; letter-spacing: 1.5px; margin: 6px 0 10px; color: var(--white); }
.step-body p { font-size: 14px; color: rgba(255, 255, 255, 0.68); line-height: 1.9; }

/* ---------- CTA ---------- */
.contact {
  background:
    radial-gradient(700px 420px at 85% 20%, rgba(201, 160, 99, 0.18), transparent 60%),
    linear-gradient(150deg, var(--primary) 0%, var(--primary-deep) 100%);
  padding: 90px 0;
}
.contact-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  color: var(--white);
}
.contact-copy { flex: 1 1 480px; }
.contact-copy h2 { font-family: var(--font-serif); font-size: clamp(24px, 3.6vw, 36px); letter-spacing: 3px; line-height: 1.4; margin-bottom: 16px; }
.contact-copy p { color: rgba(255, 255, 255, 0.82); font-size: 15px; line-height: 2; max-width: 640px; }
.contact-actions { display: flex; flex-direction: column; align-items: center; gap: 14px; flex: 0 0 auto; }
.contact-time { font-size: 13px; color: rgba(255, 255, 255, 0.75); letter-spacing: 2px; }

/* ---------- FAQ ---------- */
.faq { background: var(--paper-gray); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s var(--ease);
  box-shadow: var(--shadow-sm);
}
.faq-item[open] { border-color: rgba(166, 28, 46, 0.35); box-shadow: var(--shadow-md); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--ink);
  list-style: none;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: rgba(166, 28, 46, 0.08);
  transition: all 0.3s var(--ease);
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--primary);
  transform: translate(-50%, -50%);
  border-radius: 2px;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item[open] .faq-icon { background: var(--primary); transform: rotate(45deg); }
.faq-item[open] .faq-icon::before, .faq-item[open] .faq-icon::after { background: var(--white); }
.faq-body { padding: 0 26px 24px; font-size: 14.5px; color: var(--ink-soft); line-height: 2; }
.faq-body p { text-align: justify; }
.faq-body::before { content: ""; display: block; width: 100%; height: 1px; background: var(--line); margin-bottom: 18px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.72); padding: 70px 0 40px; }
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.brand-footer { margin-bottom: 18px; }
.footer-brand p { font-size: 13.5px; line-height: 2; color: rgba(255, 255, 255, 0.58); }
.footer-col h4 { font-family: var(--font-serif); font-size: 16px; letter-spacing: 2px; color: var(--gold-light); margin-bottom: 18px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: rgba(255, 255, 255, 0.68); transition: all 0.25s; }
.footer-col a:hover { color: var(--gold-light); padding-left: 6px; }
.footer-phone { font-size: 18px !important; font-weight: 700; color: var(--gold-light) !important; letter-spacing: 1px; }
.footer-tags { padding: 36px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-tags h4 { font-size: 14px; letter-spacing: 2px; color: var(--gold-light); margin-bottom: 16px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud a {
  font-size: 12.5px;
  padding: 5px 14px;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.65);
  transition: all 0.25s;
}
.tag-cloud a:hover { color: var(--gold-light); border-color: var(--gold); background: rgba(201, 160, 99, 0.08); }
.footer-bottom { padding-top: 28px; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255, 255, 255, 0.45); line-height: 1.9; }
.footer-disclaimer { font-size: 12px !important; }

/* ---------- 移动端拨号栏 ---------- */
.mobile-callbar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 95;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  box-shadow: 0 -6px 24px rgba(107, 24, 35, 0.4);
}
.mobile-call-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 12px 0;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--gold) 0%, #B3864A 100%);
  color: #3A2410;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s;
}
.mobile-call-btn:active { transform: scale(0.97); }
.mobile-call-btn svg { width: 22px; height: 22px; flex-shrink: 0; }
.mobile-call-btn span {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.3;
  font-size: 19px;
  letter-spacing: 1.5px;
}
.mobile-call-btn em {
  font-style: normal;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 2px;
  color: rgba(58, 36, 16, 0.75);
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 90;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 10px 24px rgba(166, 28, 46, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all 0.35s var(--ease);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: linear-gradient(135deg, var(--primary-dark), var(--primary-deep)); }
.back-top svg { width: 20px; height: 20px; }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-row { grid-template-columns: 1fr; gap: 32px; }
  .knowledge-law { position: static; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-frame { width: min(340px, 80%); }
  .stats-grid { flex-wrap: wrap; justify-content: center; }
  .stat-divider { display: none; }
}

@media (max-width: 900px) {
  .site-header { --header-h: 64px; }
  .main-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(320px, 82vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: calc(var(--header-h) + 20px) 28px 30px;
    background: linear-gradient(180deg, #1C1114 0%, #120B0D 100%);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
    transform: translateX(105%);
    transition: transform 0.4s var(--ease);
    overflow-y: auto;
    z-index: 108;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link {
    padding: 15px 6px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .nav-link::after { display: none; }
  .nav-phone {
    margin: 24px 0 0;
    justify-content: center;
    padding: 14px;
  }
  .menu-toggle {
    display: grid;
    place-items: center;
    gap: 0;
    width: 44px; height: 44px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }
  .menu-toggle span {
    display: block;
    width: 20px; height: 2px;
    margin: 2.5px 0;
    border-radius: 2px;
    background: var(--white);
    transition: all 0.3s var(--ease);
  }
  .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); }
  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 90;
    background: rgba(10, 5, 7, 0.6);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s;
  }
  .nav-overlay.show { opacity: 1; visibility: visible; }
  .mobile-callbar { display: block; }
  body { padding-bottom: 76px; }
  .back-top { bottom: calc(100px + env(safe-area-inset-bottom, 0px)); }
  .section { padding: 72px 0; }
  .hero { padding-bottom: 70px; }
  .contact-box { justify-content: center; text-align: center; }
  .contact-copy { flex-basis: 100%; }
  .contact-copy p { margin: 0 auto; }
}

@media (max-width: 560px) {
  .pain-grid { grid-template-columns: 1fr; }
  .types-grid { grid-template-columns: 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .step-card { flex-direction: column; gap: 18px; padding: 26px 22px; }
  .step-line { left: 44px; top: 76px; }
  .step-dot { width: 52px; height: 52px; }
  .route-list li { gap: 14px; }
  .route-step { width: 40px; height: 40px; font-size: 13px; }
  .hero { padding-top: calc(var(--header-h) + 30px); }
  .hero-badge { font-size: 12px; letter-spacing: 1px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-contact { padding: 12px 22px 12px 12px; }
  .hero-contact-text a { font-size: 20px; }
  .stats-grid { gap: 18px 12px; }
  .stat-item { flex: 1 1 40%; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .section-title { letter-spacing: 2px; }
  .contact-actions { width: 100%; }
  .btn-call { width: 100%; font-size: 18px; }
  .nav-phone { display: none; }
}

/* 减少动态效果偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}