/* ==========================================================================
   极客工坊 Landing Page - 现代科技风设计样式
   ========================================================================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.5);
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-purple: #8b5cf6;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-glow: 0 0 35px -5px rgba(59, 130, 246, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
}

/* 容器通用类 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 背景光晕装饰 */
.glow-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.22), transparent 70%);
  top: -100px;
  right: -100px;
}

.glow-2 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.16), transparent 70%);
  top: 300px;
  left: -150px;
}

/* 排版与渐变文本 */
.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #06b6d4 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section {
  padding: 90px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.sub-title {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: #fff;
}

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

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff;
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
  background: linear-gradient(135deg, #60a5fa, #3b82f6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-link {
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-link:hover {
  color: #67e8f9;
  transform: translateX(4px);
}

/* ==========================================================================
   1. 顶部导航栏
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 20px;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.2));
  border: 1px solid rgba(59, 130, 246, 0.4);
  border-radius: 10px;
  font-size: 18px;
}

.logo-accent {
  color: var(--accent-cyan);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: #fff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* ==========================================================================
   2. Hero 首屏
   ========================================================================== */
.hero {
  position: relative;
  padding: 170px 0 90px;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  color: #93c5fd;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #3b82f6;
  border-radius: 50%;
  box-shadow: 0 0 10px #3b82f6;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -1.5px;
  margin-bottom: 22px;
  color: #ffffff;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-desc strong {
  color: #fff;
  font-weight: 600;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

/* 核心指标条 */
.hero-metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 24px 36px;
  max-width: 760px;
  margin: 0 auto;
}

.metric-item {
  flex: 1;
  text-align: center;
}

.metric-num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 13px;
  color: var(--text-dim);
}

.metric-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
  margin: 0 16px;
}

/* ==========================================================================
   3. 核心服务卡片网格
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.service-card.featured {
  border-color: rgba(6, 182, 212, 0.45);
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.85) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.popular-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  color: #fff;
  border-radius: var(--radius-full);
}

.service-icon {
  font-size: 32px;
  margin-bottom: 18px;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.service-name {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.service-detail {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 22px;
}

.service-features {
  list-style: none;
  margin-bottom: 24px;
  flex-grow: 1;
}

.service-features li {
  font-size: 13px;
  color: #cbd5e1;
  padding: 6px 0;
  display: flex;
  align-items: center;
}

.service-features li::before {
  content: "✓";
  color: var(--accent-emerald);
  font-weight: bold;
  margin-right: 10px;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
  margin-top: auto;
}

.price-hint {
  font-size: 13px;
  color: var(--text-dim);
}

/* ==========================================================================
   4. 互动式在线需求预估计算器
   ========================================================================== */
.estimator-card {
  display: grid;
  grid-template-columns: 1.7fr 1.1fr;
  gap: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.group-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #e2e8f0;
  margin-bottom: 16px;
}

.control-group {
  margin-bottom: 32px;
}

/* 载体选项按钮网格 */
.option-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.opt-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.opt-btn .opt-icon {
  font-size: 20px;
}

.opt-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.opt-btn.active {
  background: rgba(59, 130, 246, 0.12);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

/* 复选框样式 */
.checkbox-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.check-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
  color: #cbd5e1;
}

.check-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.check-item input {
  display: none;
}

.check-box {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  margin-right: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.check-item input:checked + .check-box {
  background: var(--primary);
  border-color: var(--primary);
}

.check-item input:checked + .check-box::after {
  content: "✓";
  color: #fff;
  font-size: 12px;
  font-weight: bold;
}

.urgency-selector {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
}

/* 估价侧边栏 */
.estimator-result {
  background: rgba(10, 14, 23, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.result-header h3 {
  font-size: 18px;
  color: #fff;
}

.result-badge {
  font-size: 11px;
  padding: 3px 8px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
  border-radius: var(--radius-full);
}

.result-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.result-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
}

.row-label {
  color: var(--text-dim);
}

.row-val {
  color: #e2e8f0;
  font-weight: 500;
}

.highlight-time {
  color: var(--accent-cyan);
  font-weight: 700;
}

.price-box {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.1));
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  margin: 28px 0;
}

.price-label {
  font-size: 13px;
  color: #93c5fd;
  margin-bottom: 6px;
}

.price-number {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
}

.price-number .currency {
  font-size: 22px;
  margin-right: 4px;
  color: var(--accent-cyan);
}

.price-number .unit {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  margin-left: 4px;
}

.price-subtext {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 8px;
  line-height: 1.4;
}

/* ==========================================================================
   5. 优势与保障网格
   ========================================================================== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  position: relative;
  transition: var(--transition);
}

.adv-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
  background: var(--bg-card-hover);
}

.adv-number {
  font-size: 40px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.04);
  position: absolute;
  top: 16px;
  right: 20px;
}

.adv-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.adv-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.adv-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   6. 流程 Steps
   ========================================================================== */
.process-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.step-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.step-num {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.step-title {
  font-size: 17px;
  color: #fff;
  margin-bottom: 10px;
}

.step-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.step-arrow {
  color: var(--text-dim);
  font-size: 24px;
  font-weight: 300;
}

/* ==========================================================================
   7. 技术栈药丸
   ========================================================================== */
.tech-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.tech-pill {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: #cbd5e1;
  transition: var(--transition);
}

.tech-pill:hover {
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  background: rgba(59, 130, 246, 0.1);
}

/* ==========================================================================
   8. FAQ 列表折叠面板
   ========================================================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: #f1f5f9;
}

.faq-question:hover {
  color: var(--accent-cyan);
}

.faq-toggle {
  font-size: 22px;
  color: var(--text-dim);
  transition: transform 0.25s ease;
  line-height: 1;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: rgba(0, 0, 0, 0.2);
  padding: 0 24px;
}

.faq-answer p {
  padding: 16px 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-item.active {
  border-color: rgba(59, 130, 246, 0.4);
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-item.active .faq-answer {
  max-height: 250px;
}

/* ==========================================================================
   9. CTA 横幅
   ========================================================================== */
.cta-banner {
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.25) 0%, rgba(6, 182, 212, 0.2) 100%);
  border: 1px solid rgba(59, 130, 246, 0.4);
  border-radius: var(--radius-lg);
  padding: 50px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.cta-content h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}

.cta-content p {
  font-size: 16px;
  color: #cbd5e1;
}

/* ==========================================================================
   10. 页脚 Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  background: rgba(10, 14, 23, 0.95);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-slogan {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 6px;
}

.footer-info {
  text-align: right;
}

.info-tag {
  font-size: 12px;
  color: #f59e0b;
  margin-bottom: 6px;
}

.copyright {
  font-size: 13px;
  color: var(--text-dim);
}

/* ==========================================================================
   11. 浮动联系按钮
   ========================================================================== */
.floating-contact {
  position: fixed;
  right: 28px;
  bottom: 36px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.45);
  cursor: pointer;
  transition: var(--transition);
  animation: floatBounce 3s infinite ease-in-out;
}

.floating-contact:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 12px 30px rgba(16, 185, 129, 0.6);
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.floating-icon {
  font-size: 18px;
}

.floating-text {
  font-size: 14px;
  font-weight: 700;
}

/* ==========================================================================
   12. 弹窗 Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 34px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--text-dim);
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.modal-close:hover {
  color: #fff;
}

.modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.modal-avatar {
  font-size: 36px;
  margin-bottom: 10px;
}

.modal-title {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.modal-sub {
  font-size: 13px;
  color: var(--text-muted);
}

.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 24px;
}

.qr-code-box {
  width: 190px;
  height: 190px;
  padding: 10px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.qr-code-box img {
  width: 100%;
  height: 100%;
  display: block;
}

.qr-tip {
  font-size: 12px;
  color: var(--text-dim);
}

.contact-methods {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 14px 18px;
}

.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  padding: 8px 0;
}

.contact-row:not(:last-child) {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.c-label {
  color: var(--text-dim);
}

.c-val {
  color: #fff;
  font-weight: 600;
}

.btn-copy, .btn-copy-small {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #93c5fd;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-copy:hover, .btn-copy-small:hover {
  background: var(--primary);
  color: #fff;
}

/* 需求清单预览框 */
.req-preview-box {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

.req-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.req-preview-box textarea {
  width: 100%;
  height: 90px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #cbd5e1;
  font-size: 12px;
  padding: 10px;
  resize: none;
  font-family: inherit;
}

/* Toast 浮层 */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: rgba(16, 185, 129, 0.95);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 3000;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   13. 移动端响应式适配 (Mobile Responsive)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-title {
    font-size: 40px;
  }
  
  .estimator-card {
    grid-template-columns: 1fr;
    padding: 28px;
  }
  
  .process-steps {
    flex-direction: column;
  }
  
  .step-arrow {
    transform: rotate(90deg);
  }
  
  .cta-box {
    flex-direction: column;
    text-align: center;
    gap: 28px;
    padding: 40px 24px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #0d131f;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero {
    padding: 130px 0 60px;
  }
  
  .hero-title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }
  
  .hero-desc {
    font-size: 15px;
  }
  
  .hero-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 20px;
  }
  
  .metric-divider {
    display: none;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .option-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-info {
    text-align: center;
  }
  
  .floating-text {
    display: none;
  }
  
  .floating-contact {
    padding: 14px;
    border-radius: 50%;
    right: 18px;
    bottom: 24px;
  }
}