/* ========================================================
   猫猫云 (maomaoyun.lat) - 猫咪云朵 Cat Cloud 主题样式
   轻柔云朵、淡蓝天空、柔和浮动、完全响应式支持
   ======================================================== */

:root {
  --primary-50: #f0f7ff;
  --primary-100: #e0effe;
  --primary-200: #bae0fd;
  --primary-300: #7cc5fb;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --brand-blue: #2563eb;
  --brand-blue-hover: #1d4ed8;
  --brand-dark: #0f172a;
  --brand-slate: #1e293b;
  --text-main: #334155;
  --text-muted: #64748b;
  --bg-cloud: #f8faff;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-hover-border: #93c5fd;
  --badge-bg: #e0f2fe;
  --badge-text: #0369a1;
  --soft-shadow: 0 10px 30px -10px rgba(14, 165, 233, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --elevated-shadow: 0 20px 40px -15px rgba(37, 99, 235, 0.16), 0 0 1px 1px rgba(186, 230, 253, 0.5);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-cloud);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  background: radial-gradient(1200px circle at 50% 0%, #e0effe 0%, #f0f7ff 35%, #f8faff 100%);
}

/* Background floating clouds effect */
.cloud-bg-decor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.cloud-bubble {
  position: absolute;
  background: radial-gradient(circle, rgba(224, 242, 254, 0.7) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  filter: blur(20px);
}

.cloud-bubble-1 {
  width: 500px;
  height: 500px;
  top: -120px;
  left: -80px;
  animation: cloudDrift 24s ease-in-out infinite alternate;
}

.cloud-bubble-2 {
  width: 600px;
  height: 600px;
  top: 15%;
  right: -150px;
  animation: cloudDrift 28s ease-in-out infinite alternate-reverse;
}

.cloud-bubble-3 {
  width: 450px;
  height: 450px;
  bottom: 10%;
  left: 5%;
  animation: cloudDrift 22s ease-in-out infinite alternate;
}

@keyframes cloudDrift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 20px) scale(1.05); }
  100% { transform: translate(-25px, -15px) scale(0.98); }
}

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

.float-anim {
  animation: gentleFloat 4.5s ease-in-out infinite;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 840px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background-color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 10px;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--brand-slate);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-blue);
  background-color: var(--primary-50);
}

.nav-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--brand-blue) 100%);
  color: #ffffff !important;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-action-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--brand-blue-hover) 100%);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  color: var(--brand-dark);
}

.mobile-toggle svg {
  width: 26px;
  height: 26px;
  display: block;
}

/* Hero Section */
.hero-section {
  padding: 64px 0 48px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #ffffff;
  border: 1px solid var(--primary-200);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--brand-blue);
  box-shadow: var(--soft-shadow);
  margin-bottom: 24px;
}

.hero-pill-icon {
  width: 18px;
  height: 18px;
  vertical-align: middle;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: var(--brand-dark);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-title-accent {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 60%, #4f46e5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  text-decoration: none;
  box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -5px rgba(37, 99, 235, 0.5);
  background: linear-gradient(135deg, #0284c7 0%, #1d4ed8 100%);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: #ffffff;
  color: var(--brand-slate);
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  text-decoration: none;
  border: 1px solid var(--card-border);
  box-shadow: var(--soft-shadow);
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--primary-300);
  color: var(--brand-blue);
  transform: translateY(-2px);
  background-color: var(--primary-50);
}

.hero-feature-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.feature-tag-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.8);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(226, 232, 240, 0.7);
}

.feature-tag-icon {
  color: #10b981;
}

/* Cloud Card Grid */
.section {
  padding: 56px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 44px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-blue);
  background: var(--primary-100);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--brand-dark);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--soft-shadow);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--card-hover-border);
  box-shadow: var(--elevated-shadow);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-200) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
  margin-bottom: 18px;
  font-size: 1.4rem;
}

.card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 10px;
}

.card-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.card-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-blue);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: var(--transition);
}

.card-link:hover {
  gap: 10px;
  color: var(--brand-blue-hover);
}

/* Service & Plans Notice Card */
.service-statement-card {
  background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%);
  border: 1px solid var(--primary-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--elevated-shadow);
  margin-bottom: 32px;
}

.service-statement-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}

.verified-notice-box {
  background: #ffffff;
  border-left: 4px solid var(--primary-500);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-top: 18px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.notice-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--primary-700);
  margin-bottom: 6px;
}

.service-spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--soft-shadow);
  border: 1px solid var(--card-border);
}

.service-spec-table th,
.service-spec-table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.92rem;
  border-bottom: 1px solid #f1f5f9;
}

.service-spec-table th {
  background: var(--primary-50);
  font-weight: 700;
  color: var(--brand-dark);
}

.service-spec-table tr:last-child td {
  border-bottom: none;
}

.badge-portal {
  display: inline-block;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.badge-price {
  display: inline-block;
  background: #f0f7ff;
  color: #1d4ed8;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid #bfdbfe;
  white-space: nowrap;
}

/* Articles Section & Article Cards */
.article-card {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--card-hover-border);
  box-shadow: var(--elevated-shadow);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-category {
  background: var(--primary-100);
  color: var(--primary-700);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 10px;
  line-height: 1.45;
}

.article-card-title a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.article-card-title a:hover {
  color: var(--brand-blue);
}

.article-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* Feedback Section */
.feedback-box {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--soft-shadow);
  max-width: 720px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--brand-dark);
  background-color: #fafbfc;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-500);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

.feedback-alert {
  display: none;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
  font-size: 0.92rem;
}

.feedback-alert-success {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* User Reviews Cards (模式更换为图一模式) */
.review-card {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  box-shadow: var(--soft-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-hover-border);
  box-shadow: var(--elevated-shadow);
}

.review-stars {
  color: #ef4444;
  font-size: 1.18rem;
  letter-spacing: 3px;
  margin-bottom: 14px;
  line-height: 1;
}

.review-text {
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--text-main);
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.15rem;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.review-author-meta {
  display: flex;
  flex-direction: column;
}

.review-author-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--brand-dark);
  line-height: 1.3;
}

.review-author-role {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 2px;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: var(--primary-300);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.25s ease;
  flex-shrink: 0;
  color: var(--brand-blue);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 22px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid #f8fafc;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Article Page Layout */
.article-page-wrap {
  padding: 48px 0 72px;
}

.article-header {
  margin-bottom: 32px;
  text-align: center;
}

.article-breadcrumbs {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.article-breadcrumbs a {
  color: var(--brand-blue);
  text-decoration: none;
}

.article-post-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--brand-dark);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.article-post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-content {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  box-shadow: var(--soft-shadow);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--brand-slate);
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--brand-dark);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-100);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul, .article-content ol {
  margin: 16px 0 20px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.callout-box {
  background: var(--primary-50);
  border-left: 4px solid var(--primary-600);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 0.96rem;
}

.callout-title {
  font-weight: 700;
  color: var(--primary-700);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-cta-box {
  margin-top: 40px;
  background: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 100%);
  border: 1px solid var(--primary-200);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
}

.related-articles-section {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--card-border);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: #ffffff;
  border-top: 1px solid var(--card-border);
  padding: 56px 0 28px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  margin-top: 14px;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--brand-blue);
  padding-left: 2px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-disclaimer {
  font-size: 0.82rem;
  color: #94a3b8;
  line-height: 1.5;
}

/* Mobile Responsive */
@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-statement-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 24px 20px;
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    display: none;
    gap: 16px;
  }
  .nav-links.open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
  .hero-section {
    padding: 40px 0 32px;
  }
  .article-content {
    padding: 24px 20px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}