/* ==========================================================================
   泡芙云机场 (Paofucloud Airport) - Visual Design System
   Theme: Airy Puff & Soft Soufflé (空气泡芙与极简浮云风格)
   Colors: Mint Sky Blue, Pale Cherry Blossom Pink, Cream White
   Focus: Centered, Neat, Clean & Perfectly Aligned Layout
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  /* Color Tokens */
  --color-mint-light: #e6f9f6;
  --color-mint-subtle: #bbf2eb;
  --color-mint: #70e0d6;
  --color-mint-deep: #2cb5a8;
  
  --color-pink-light: #fff0f5;
  --color-pink-subtle: #ffd6e5;
  --color-pink: #ffb4c8;
  --color-pink-deep: #f472b6;
  
  --color-cream: #fffdfa;
  --color-cream-subtle: #f8f6f0;
  --color-lavender-subtle: #f3e9ff;
  
  --color-text-main: #334155;
  --color-text-muted: #64748b;
  --color-text-dark: #0f172a;
  
  --color-card-bg: rgba(255, 255, 255, 0.92);
  --color-card-border: rgba(255, 255, 255, 0.95);
  
  /* Soufflé Gradients */
  --grad-macaron: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  --grad-mint-pink: linear-gradient(135deg, #70e0d6 0%, #ffb4c8 100%);
  --grad-hot: linear-gradient(135deg, #ff758c 0%, #ff7eb3 100%);
  --grad-hero: radial-gradient(circle at 50% 10%, #e6f9f6 0%, #fff0f5 50%, #fffdfa 95%);
  
  /* Soufflé Cloud Shadows */
  --shadow-souffle-sm: 0 10px 25px -8px rgba(112, 224, 214, 0.2), 0 6px 16px -6px rgba(255, 180, 200, 0.25);
  --shadow-souffle: 0 20px 45px -12px rgba(112, 224, 214, 0.28), 0 12px 28px -10px rgba(255, 180, 200, 0.35);
  --shadow-souffle-lg: 0 30px 65px -15px rgba(112, 224, 214, 0.35), 0 18px 45px -12px rgba(255, 180, 200, 0.45);
  --shadow-glow-pink: 0 15px 35px -5px rgba(255, 180, 200, 0.5);
  --shadow-glow-mint: 0 15px 35px -5px rgba(112, 224, 214, 0.5);
  
  /* Organic Cloud Borders */
  --radius-cloud-1: 32px 44px 28px 38px / 40px 28px 42px 32px;
  --radius-cloud-2: 40px 28px 42px 32px / 32px 44px 28px 38px;
  --radius-pill: 999px;
  
  --font-main: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-normal: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--grad-hero);
  background-attachment: fixed;
  color: var(--color-text-main);
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
  text-align: left;
}

/* Floating background decoration blobs */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}

body::before {
  width: 600px;
  height: 600px;
  background: rgba(112, 224, 214, 0.3);
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  animation: souffleFloat 12s ease-in-out infinite alternate;
}

body::after {
  width: 600px;
  height: 600px;
  background: rgba(255, 180, 200, 0.3);
  bottom: 50px;
  right: -100px;
  animation: souffleFloat 15s ease-in-out infinite alternate-reverse;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-normal);
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Keyframes Animations */
@keyframes souffleFloat {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(0.8deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

.float-animation {
  animation: souffleFloat 6s ease-in-out infinite;
}

.float-animation-delay {
  animation: souffleFloat 7s ease-in-out 2s infinite;
}

/* Container & Centered Layout Utilities */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 90px 0;
  position: relative;
}

.text-center { 
  text-align: center; 
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Headers & Section Titles (Perfectly Centered) */
.section-title-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 24px;
  background: rgba(255, 255, 255, 0.95);
  border: 1.5px solid var(--color-mint-subtle);
  border-radius: var(--radius-pill);
  color: var(--color-mint-deep);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin: 0 auto 18px auto;
  box-shadow: 0 4px 15px rgba(112, 224, 214, 0.18);
  backdrop-filter: blur(10px);
}

.section-title-tag svg {
  width: 16px;
  height: 16px;
  fill: var(--color-mint-deep);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--color-text-dark);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.25;
  text-align: center;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto 48px auto;
  text-align: center;
  line-height: 1.7;
}

/* Navigation Bar (Centered Container & Balanced Spacing) */
.navbar {
  position: sticky;
  top: 16px;
  z-index: 1000;
  margin-bottom: 20px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 2px solid var(--color-card-border);
  border-radius: 32px;
  padding: 12px 32px;
  box-shadow: var(--shadow-souffle-sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-text-dark);
}

.logo-icon-cloud {
  width: 42px;
  height: 42px;
  background: var(--grad-mint-pink);
  border-radius: 14px 18px 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px rgba(255, 180, 200, 0.4);
  color: #fff;
}

.logo-text span {
  background: linear-gradient(135deg, var(--color-mint-deep), var(--color-pink-deep));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-main);
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover {
  color: var(--color-mint-deep);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--grad-mint-pink);
  border-radius: 3px;
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.nav-links a:hover::after {
  width: 100%;
}

.btn-nav {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background: var(--grad-mint-pink);
  color: #fff !important;
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: var(--shadow-glow-pink);
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-nav:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 25px rgba(244, 114, 182, 0.5);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-text-dark);
  margin: 5px 0;
  border-radius: 3px;
}

/* Buttons System (Neatly Centered Text & Icons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  font-size: 1rem;
  font-weight: 800;
  border-radius: var(--radius-pill);
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  text-align: center;
  text-decoration: none;
}

.btn-primary {
  background: var(--grad-mint-pink);
  color: #ffffff;
  box-shadow: var(--shadow-glow-pink);
}

.btn-primary:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 18px 35px rgba(244, 114, 182, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-mint-deep);
  border: 2px solid var(--color-mint-subtle);
  box-shadow: var(--shadow-souffle-sm);
}

.btn-secondary:hover {
  background: var(--color-mint-light);
  border-color: var(--color-mint);
  transform: translateY(-3px);
}

.btn-hot {
  background: var(--grad-hot);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(255, 117, 140, 0.4);
}

.btn-hot:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 18px 36px rgba(255, 117, 140, 0.55);
}

.btn-blue-glow {
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.35);
}

.btn-blue-glow:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 18px 36px rgba(59, 130, 246, 0.5);
}

.btn-outline-dark {
  background: #ffffff;
  color: var(--color-text-dark);
  border: 1.5px solid #cbd5e1;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.btn-outline-dark:hover {
  border-color: var(--color-mint);
  color: var(--color-mint-deep);
  transform: translateY(-2px);
}

/* HERO SECTION (Centered Layout) */
.hero {
  padding: 50px 0 80px 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge-wrap {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 26px;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid var(--color-pink-subtle);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-souffle-sm);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-pink-deep);
  animation: souffleFloat 5s ease-in-out infinite;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  color: var(--color-text-dark);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  text-align: center;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--color-mint-deep) 0%, var(--color-pink-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 760px;
  margin: 0 auto 36px auto;
  line-height: 1.8;
  text-align: center;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

/* Hero Cards Grid (Centered & Balanced) */
.hero-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 30px;
  width: 100%;
}

.hero-cloud-card {
  background: var(--color-card-bg);
  backdrop-filter: blur(16px);
  border: 2px solid var(--color-card-border);
  border-radius: 32px;
  padding: 32px 28px;
  box-shadow: var(--shadow-souffle);
  transition: var(--transition-smooth);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-cloud-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-souffle-lg);
  border-color: var(--color-pink-subtle);
  background: #ffffff;
}

.cloud-card-icon {
  width: 60px;
  height: 60px;
  border-radius: 22px;
  background: var(--grad-macaron);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 10px 20px rgba(112, 224, 214, 0.3);
}

.cloud-card-icon svg {
  width: 30px;
  height: 30px;
  fill: #1e293b;
}

.hero-cloud-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 10px;
  text-align: center;
}

.hero-cloud-card p {
  font-size: 0.94rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  text-align: center;
}

/* Core Advantages Grid (Neatly Aligned) */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.adv-card {
  background: rgba(255, 255, 255, 0.94);
  border: 2px solid var(--color-card-border);
  border-radius: 28px;
  padding: 36px 30px;
  box-shadow: var(--shadow-souffle);
  transition: var(--transition-smooth);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-souffle-lg);
  background: #ffffff;
}

.adv-number {
  font-size: 2.2rem;
  font-weight: 900;
  background: var(--grad-mint-pink);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

.adv-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 12px;
  text-align: center;
}

.adv-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  text-align: center;
}

/* PRICING SECTION - Perfectly Centered & Reference Compliant */
.pricing-section {
  background: linear-gradient(180deg, rgba(230, 249, 246, 0.45) 0%, rgba(255, 240, 245, 0.45) 100%);
  border-radius: 40px;
  padding: 70px 30px;
  margin: 20px 0;
  box-shadow: inset 0 2px 20px rgba(255, 255, 255, 0.8);
}

.pricing-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1040px;
  margin: 0 auto;
}

.price-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 4px 14px rgba(112, 224, 214, 0.08);
  border: 2px solid transparent;
  transition: var(--transition-smooth);
  position: relative;
}

.price-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08), 0 8px 25px rgba(112, 224, 214, 0.18);
}

.price-card.popular {
  border-color: #6366f1;
  box-shadow: 0 14px 40px rgba(99, 102, 241, 0.18);
  background: linear-gradient(180deg, #ffffff 0%, #f5f7ff 100%);
}

.popular-badge {
  position: absolute;
  top: -14px;
  right: 40px;
  background: var(--grad-hot);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 5px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 14px rgba(255, 117, 140, 0.4);
  display: flex;
  align-items: center;
  gap: 4px;
}

.price-card-left {
  flex: 1;
  max-width: 260px;
  text-align: left;
}

.price-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 6px;
}

.price-subtitle {
  font-size: 0.88rem;
  color: #94a3b8;
  font-weight: 500;
}

.price-card-features {
  flex: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  padding: 0 24px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.94rem;
  color: #334155;
  font-weight: 600;
  text-align: left;
}

.feature-item svg {
  width: 18px;
  height: 18px;
  fill: #10b981;
  flex-shrink: 0;
  margin: 0;
}

.price-card-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.price-amount {
  text-align: right;
}

.price-num {
  font-size: 2.3rem;
  font-weight: 900;
  color: #0f172a;
  letter-spacing: -0.03em;
}

.price-num span {
  font-size: 1.3rem;
  font-weight: 700;
}

.price-period {
  font-size: 0.88rem;
  color: #64748b;
  font-weight: 500;
}

.price-btn {
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 0.95rem;
  white-space: nowrap;
}

/* Target Audience Grid (Centered Cards) */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 24px;
}

.audience-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 28px;
  padding: 32px 20px;
  text-align: center;
  border: 2px solid var(--color-card-border);
  box-shadow: var(--shadow-souffle-sm);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.audience-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-souffle);
  border-color: var(--color-mint-subtle);
  background: #ffffff;
}

.audience-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--grad-macaron);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(112, 224, 214, 0.3);
}

.audience-avatar svg {
  width: 28px;
  height: 28px;
  fill: #1e293b;
  margin: 0;
}

.audience-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 8px;
  text-align: center;
}

.audience-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
}

/* Tutorial Box & Step List (Centered Controls) */
.tutorial-box {
  background: #ffffff;
  border-radius: 36px;
  border: 2px solid var(--color-card-border);
  padding: 44px;
  box-shadow: var(--shadow-souffle);
  text-align: center;
}

.tab-nav {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  background: var(--color-cream-subtle);
  border: 1.5px solid #cbd5e1;
  color: var(--color-text-main);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn.active, .tab-btn:hover {
  background: var(--grad-mint-pink);
  color: #ffffff;
  border-color: transparent;
  box-shadow: var(--shadow-glow-pink);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.step-card {
  background: var(--color-mint-light);
  border-radius: 24px;
  padding: 28px;
  border: 1.5px solid rgba(112, 224, 214, 0.3);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-badge {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-mint-deep);
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.step-card h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 10px;
  text-align: center;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* User Testimonials (Soufflé Floating Feedback Cards - Centered Text) */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 28px;
}

.testi-card {
  background: var(--color-card-bg);
  backdrop-filter: blur(10px);
  border-radius: 32px;
  border: 2px solid var(--color-card-border);
  padding: 32px;
  box-shadow: var(--shadow-souffle);
  transition: var(--transition-smooth);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.testi-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-souffle-lg);
  background: #ffffff;
}

.testi-stars {
  color: #f59e0b;
  margin-bottom: 14px;
  display: flex;
  justify-content: center;
  gap: 4px;
  font-size: 1.1rem;
}

.testi-quote {
  font-size: 0.95rem;
  color: var(--color-text-main);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
  text-align: center;
}

.testi-user {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.testi-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--grad-mint-pink);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
}

.testi-info {
  text-align: left;
}

.testi-info h5 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-text-dark);
}

.testi-info span {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* FAQ Accordion Section (Centered Wrap) */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border-radius: 24px;
  border: 1.5px solid var(--color-card-border);
  box-shadow: var(--shadow-souffle-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item.active {
  border-color: var(--color-mint);
  box-shadow: var(--shadow-souffle);
}

.faq-header {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-text-dark);
  text-align: left;
}

.faq-header svg {
  width: 20px;
  height: 20px;
  fill: var(--color-mint-deep);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin: 0;
}

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

.faq-body {
  padding: 0 28px 24px 28px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  display: none;
  text-align: left;
}

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

/* Article Catalog Grid (Neat Card Alignment) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.art-card {
  background: #ffffff;
  border-radius: 28px;
  border: 2px solid var(--color-card-border);
  box-shadow: var(--shadow-souffle-sm);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.art-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-souffle-lg);
  border-color: var(--color-pink-subtle);
}

.art-cover {
  height: 180px;
  background: var(--grad-macaron);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.art-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
}

.art-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-mint-deep);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.art-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  text-align: left;
}

.art-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 12px;
  line-height: 1.45;
}

.art-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
}

.art-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

.art-link {
  color: var(--color-mint-deep);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ARTICLE / TUTORIAL PAGE INNER LAYOUT (Centered Container) */
.page-header {
  padding: 50px 0 30px 0;
  text-align: center;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--color-mint-deep);
  font-weight: 700;
}

.article-container {
  max-width: 900px;
  margin: 0 auto 80px auto;
  background: #ffffff;
  border-radius: 36px;
  border: 2px solid var(--color-card-border);
  padding: 50px;
  box-shadow: var(--shadow-souffle);
  text-align: left;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
}

.article-content h1 {
  font-size: 2.1rem;
  font-weight: 900;
  color: var(--color-text-dark);
  margin-bottom: 24px;
  line-height: 1.3;
  text-align: center;
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin: 40px 0 20px 0;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--color-mint-light);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin: 28px 0 14px 0;
}

.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 24px 24px; }
.article-content li { margin-bottom: 8px; }

.article-content code {
  background: #f1f5f9;
  color: #e11d48;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.9em;
  font-family: monospace;
}

.article-content pre {
  background: #0f172a;
  color: #f8fafc;
  padding: 20px;
  border-radius: 18px;
  overflow-x: auto;
  margin-bottom: 24px;
}

.article-cta-box {
  background: var(--grad-macaron);
  border-radius: 28px;
  padding: 36px;
  text-align: center;
  margin: 40px 0;
  box-shadow: var(--shadow-souffle-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.article-cta-box h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 12px;
  text-align: center;
}

.article-cta-box p {
  color: #475569;
  margin-bottom: 24px;
  text-align: center;
}

/* Article Related Recommendations */
.related-articles {
  margin-top: 50px;
  padding-top: 40px;
  border-top: 2px dashed #e2e8f0;
}

.related-articles h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--color-text-dark);
  text-align: center;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.related-item {
  background: var(--color-cream-subtle);
  border-radius: 18px;
  padding: 18px;
  border: 1.5px solid #e2e8f0;
  transition: var(--transition-normal);
  text-align: center;
}

.related-item:hover {
  border-color: var(--color-mint);
  transform: translateY(-3px);
  background: #ffffff;
}

.related-item a {
  font-weight: 700;
  color: var(--color-text-dark);
  display: block;
  line-height: 1.45;
}

/* FOOTER (Centered Bottom Links) */
.footer {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-top: 2px solid var(--color-card-border);
  padding: 70px 0 30px 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--color-mint-deep);
}

.footer-bottom {
  border-top: 1.5px solid #e2e8f0;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 16px;
  text-align: center;
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
  .hero-title { font-size: 2.5rem; }
  .price-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
  }
  .price-card-left { text-align: center; max-width: 100%; }
  .price-card-features {
    grid-template-columns: 1fr;
    padding: 0;
    width: 100%;
  }
  .feature-item { justify-content: center; }
  .price-card-right {
    width: 100%;
    justify-content: center;
    flex-direction: column;
    gap: 14px;
  }
  .price-amount { text-align: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .hero-title { font-size: 2rem; }
  .hero-desc { font-size: 1.05rem; }
  .section-title { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-brand p { margin: 16px auto 0 auto; }
  .article-container { padding: 24px; }
  .price-num { font-size: 1.9rem; }
}