/* ===== 企脉 Qimai - 桌面端宽屏样式 ===== */

/* --- CSS Variables --- */
:root {
  --color-bg: #f5f6fa;
  --color-surface: #ffffff;
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #dbeafe;
  --color-dark: #1a1f36;
  --color-dark-secondary: #2d3348;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-success: #10b981;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);

  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;

  --max-content: 1200px;
  --header-height: 64px;
}

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

html { font-size: 16px; }

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* --- App Container --- */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Header ===== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26,31,54,0.95);
  backdrop-filter: blur(10px);
  height: var(--header-height);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.header-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), #6366f1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 20px;
}

.header-logo .logo-text {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}

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

.nav-link {
  padding: 8px 18px;
  border-radius: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.nav-link.active {
  color: #fff;
  background: var(--color-primary);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
}

/* --- Page Sections --- */
.page-section {
  display: none;
  animation: fadeIn 0.3s ease;
}
.page-section.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== Hero (首页) ===== */
.hero {
  background: linear-gradient(135deg, var(--color-dark) 0%, #1e2a4a 100%);
  color: #fff;
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59,130,246,0.12), transparent 60%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, rgba(59,130,246,0.05));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 32px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 6px 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary), #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.35);
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(59,130,246,0.45); }

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
}
.btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); }

.btn-lg { padding: 16px 40px; font-size: 18px; border-radius: var(--radius-lg); }
.btn-block { width: 100%; }

/* ===== Stats Strip ===== */
.stats-strip {
  max-width: var(--max-content);
  margin: -30px auto 0;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

.stats-inner {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 48px;
  display: flex;
  justify-content: space-around;
  box-shadow: var(--shadow-lg);
}

.stat-item { text-align: center; }
.stat-number { font-size: 36px; font-weight: 800; color: var(--color-primary); line-height: 1; }
.stat-label { font-size: 14px; color: var(--color-text-secondary); margin-top: 8px; }

/* ===== Section Common ===== */
.section {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 64px 32px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* ===== Value Cards (首页) ===== */
.value-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.value-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all 0.2s;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }

.value-card .card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}

.value-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--color-dark); }
.value-card p  { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

.icon-blue   { background: #dbeafe; color: #3b82f6; }
.icon-green  { background: #d1fae5; color: #10b981; }
.icon-purple { background: #ede9fe; color: #8b5cf6; }
.icon-orange { background: #ffedd5; color: #f97316; }

/* ===== Quick Links ===== */
.quick-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.quick-link-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.2s;
}
.quick-link-card:hover { border-color: var(--color-primary); background: var(--color-primary-light); transform: translateY(-2px); }

.quick-link-card .ql-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); font-size: 20px;
  flex-shrink: 0;
}
.quick-link-card .ql-text { font-size: 15px; font-weight: 600; color: var(--color-dark); }

/* ===== CTA ===== */
.cta-section {
  text-align: center;
  padding: 32px 0 64px;
}

/* ===== Page Header (子页面顶部) ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-secondary) 100%);
  color: #fff;
  padding: 64px 32px;
  text-align: center;
}
.page-header h1 { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.page-header p  { font-size: 16px; color: rgba(255,255,255,0.7); }

/* ===== Content Block ===== */
.content-block {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 48px 32px;
}

.content-block h2 { font-size: 24px; font-weight: 700; color: var(--color-dark); margin-bottom: 16px; }
.content-block p  { font-size: 16px; color: var(--color-text-secondary); line-height: 1.8; margin-bottom: 16px; max-width: 800px; }

/* ===== About: Intro Layout ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-intro-text h2 { margin-top: 0; }

.about-intro-image img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* ===== About: Feature Grid ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.feature-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all 0.2s;
}
.feature-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.feature-item .fi-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
}
.feature-item h4 { font-size: 16px; font-weight: 600; color: var(--color-dark); margin-bottom: 6px; }
.feature-item p  { font-size: 14px; color: var(--color-text-secondary); line-height: 1.5; max-width: none; }

/* ===== Service Cards ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  transition: all 0.2s;
}
.service-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.service-card h3 { font-size: 20px; font-weight: 700; color: var(--color-dark); margin-bottom: 4px; }
.service-card .sc-tag { display: inline-block; font-size: 12px; background: var(--color-primary-light); color: var(--color-primary); padding: 3px 12px; border-radius: 12px; margin-bottom: 10px; }
.service-card p  { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 14px; max-width: none; }

.sc-features { display: flex; flex-wrap: wrap; gap: 8px; }
.sc-feature-tag { font-size: 12px; background: var(--color-bg); color: var(--color-text-secondary); padding: 4px 12px; border-radius: 14px; font-weight: 500; }

/* ===== Process Flow ===== */
.process-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 32px 0;
}

.process-step {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  min-width: 140px;
  transition: all 0.2s;
}
.process-step:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.process-step .ps-num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
  margin: 0 auto 10px;
}
.process-step .ps-label { font-size: 14px; font-weight: 600; color: var(--color-dark); }
.process-arrow { color: var(--color-text-light); font-size: 24px; font-weight: 300; }

/* ===== Industry Tags ===== */
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.industry-tag {
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 18px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
  border: 1px solid rgba(59,130,246,0.2);
  transition: all 0.2s;
}
.industry-tag:hover { background: var(--color-primary); color: #fff; }

/* ===== Case Grid ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.2s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.case-card .cc-image {
  height: 160px;
  background: linear-gradient(135deg, var(--color-dark-secondary), #3b4a6b);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.25);
  font-size: 48px;
}
.case-card .cc-body { padding: 20px 24px; }
.case-card .cc-industry { font-size: 12px; color: var(--color-primary); font-weight: 600; margin-bottom: 4px; }
.case-card .cc-title { font-size: 16px; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; }
.case-card .cc-result { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }
.cc-tags { display: flex; gap: 6px; margin-top: 10px; }
.cc-tag { font-size: 12px; padding: 3px 10px; border-radius: 10px; background: var(--color-bg); color: var(--color-text-secondary); }

/* ===== Filter Tabs ===== */
.filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-tab.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ===== Article Grid ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.2s;
}
.article-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }

.article-card .ac-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 10px;
  margin-bottom: 10px;
}
.tag-trend   { background: #dbeafe; color: #3b82f6; }
.tag-case    { background: #d1fae5; color: #10b981; }
.tag-practice { background: #ede9fe; color: #8b5cf6; }

.article-card h3 { font-size: 16px; font-weight: 600; color: var(--color-dark); line-height: 1.4; margin-bottom: 8px; }
.article-card .ac-excerpt {
  font-size: 14px; color: var(--color-text-secondary); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.article-card .ac-meta { font-size: 12px; color: var(--color-text-light); margin-top: 10px; }

/* ===== Chat Widget ===== */
.chat-widget {
  max-width: 800px;
  margin: 32px auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 520px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--color-bg);
}

.chat-msg {
  display: flex;
  gap: 10px;
  max-width: 75%;
}
.chat-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.chat-msg.bot  { align-self: flex-start; }

.chat-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.chat-msg.bot .chat-avatar { background: var(--color-primary-light); color: var(--color-primary); }
.chat-msg.user .chat-avatar { background: var(--color-dark-secondary); color: #fff; }

.chat-bubble {
  padding: 12px 18px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.7;
}
.chat-msg.bot .chat-bubble  { background: var(--color-surface); color: var(--color-text); border-top-left-radius: 4px; }
.chat-msg.user .chat-bubble { background: var(--color-primary); color: #fff; border-top-right-radius: 4px; }

.chat-typing {
  align-self: flex-start;
  display: flex; gap: 5px;
  padding: 14px 18px;
  background: var(--color-surface);
  border-radius: 16px;
  border-top-left-radius: 4px;
}

.chat-typing span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-text-light);
  animation: typing 1.4s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

.chat-input-area {
  display: flex;
  gap: 10px;
  padding: 14px 20px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.chat-input-area input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 12px 18px;
  font-size: 14px;
  outline: none;
  background: var(--color-bg);
  transition: border-color 0.2s;
}
.chat-input-area input:focus { border-color: var(--color-primary); }

.chat-send-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  transition: all 0.2s;
}
.chat-send-btn:hover { background: var(--color-primary-dark); }

/* ===== Implementation Detail Page ===== */
.impl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.impl-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--color-border);
  transition: all 0.2s;
}
.impl-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.impl-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.impl-card h3 { font-size: 18px; margin-bottom: 10px; }

.impl-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.impl-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.impl-feature-tag {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Delivery Process */
.impl-process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.impl-step {
  text-align: center;
  padding: 20px 12px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.impl-step-num {
  width: 40px; height: 40px;
  margin: 0 auto 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}

.impl-step-text h4 {
  font-size: 14px;
  margin-bottom: 6px;
}

.impl-step-text p {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Back button */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
  margin-bottom: 16px;
  transition: all 0.2s;
}
.back-btn:hover { background: var(--color-surface); color: var(--color-primary); border-color: var(--color-primary); }

/* Clickable service card */
.sc-clickable { cursor: pointer; }
.cc-clickable { cursor: pointer; }
.cc-clickable:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }

.sc-link {
  font-size: 13px;
  color: var(--color-primary);
  margin-top: 12px;
  font-weight: 500;
  transition: color 0.2s;
}
.sc-clickable:hover .sc-link { color: var(--color-primary-dark); }

/* CTA section */
.cta-section {
  text-align: center;
  padding: 48px 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-md);
  color: #fff;
  margin-top: 40px;
}
.cta-section h2 { color: #fff; margin-bottom: 8px; font-size: 22px; }
.cta-section p { color: rgba(255,255,255,.85); font-size: 16px; margin-bottom: 24px; }
.cta-section .btn.btn-primary { background: #fff; color: var(--color-primary); border: none; }
.cta-section .btn.btn-primary:hover { background: rgba(255,255,255,.9); }

/* ===== Contact Page ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-form {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--color-dark); margin-bottom: 6px; }
.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 15px;
  outline: none;
  background: var(--color-bg);
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--color-primary); }
.form-group textarea { resize: vertical; min-height: 120px; }

.contact-info-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-info-side h3 { font-size: 20px; font-weight: 700; color: var(--color-dark); margin-bottom: 4px; }

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  color: var(--color-text-secondary);
}
.contact-info-item .ci-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 20px;
  flex-shrink: 0;
}
.contact-info-item .ci-label { font-weight: 600; color: var(--color-dark); font-size: 14px; margin-bottom: 2px; }

/* ===== Footer ===== */
.app-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 32px 0;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
  cursor: pointer;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--color-primary); }

.footer-col p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-logo .logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--color-primary), #6366f1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 16px;
}
.footer-logo span { color: #fff; font-size: 18px; font-weight: 700; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 32px;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  margin-left: auto;
  font-size: 18px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.modal-close:hover { background: #fee2e2; color: #ef4444; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  top: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-dark);
  color: #fff;
  padding: 12px 28px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 999;
  box-shadow: var(--shadow-md);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.2s forwards;
}

@keyframes toastIn  { from { opacity: 0; transform: translateX(-50%) translateY(-10px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; } }

/* ===== Detail Page Intro ===== */
.detail-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.detail-intro-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.detail-intro-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.detail-intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.detail-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  border-top: 4px solid var(--color-primary);
}

.detail-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.detail-stat-label {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ===== Case Detail Page ===== */
.case-detail-hero {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.case-detail-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cd-meta-item { text-align: center; }
.cd-meta-label {
  font-size: 12px;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.cd-meta-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-dark);
}

.case-detail-text {
  max-width: 800px;
}
.case-detail-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
  max-width: none;
}

/* Pain Points Grid */
.case-pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.case-pain-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  border-left: 4px solid #ef4444;
  transition: all 0.2s;
}
.case-pain-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.cpi-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: #fef2f2;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  margin-bottom: 12px;
}
.case-pain-item h4 { font-size: 15px; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; }
.case-pain-item p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.7; margin: 0; }

/* Phase */
.case-phase {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}
.case-phase:last-child { border-bottom: none; }

.case-phase-num {
  flex-shrink: 0;
  width: 80px;
  height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
}
.case-phase-body { flex: 1; }
.case-phase-body h3 { font-size: 18px; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; }
.case-phase-body p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.8; margin: 0; max-width: none; }

/* Deliverables */
.case-deliverables {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.cd-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  border: 1px solid var(--color-border);
  transition: all 0.2s;
}
.cd-item:hover { border-color: var(--color-primary-light); background: var(--color-surface); }

.cd-item-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
}
.cd-item strong { display: block; font-size: 15px; font-weight: 700; color: var(--color-dark); margin-bottom: 4px; }
.cd-item p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; margin: 0; }

/* Results Grid */
.case-results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.case-result-card {
  background: linear-gradient(135deg, var(--color-primary), #2563eb);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
  transition: all 0.2s;
}
.case-result-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(59,130,246,0.4); }

.crc-num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}
.crc-label {
  font-size: 13px;
  opacity: 0.85;
  line-height: 1.5;
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }