/* ==========================================================================
   青云梯机场官方网站 · 方案 A：青云和风 (QYT-ZEN-A01)
   日系清新 · 插画场景式 视觉设计系统
   ========================================================================== */

:root {
  --color-bg: #FAF8F1;
  --color-bg-sub: #F1F5EB;
  --color-card-bg: #FFFDF8;
  --color-forest: #356A46;
  --color-forest-dark: #193D2D;
  --color-matcha: #79A66A;
  --color-sage: #C8D8BF;
  --color-sakura: #F4C9CF;
  --color-sakura-light: #FDF1F3;
  --color-text-main: #20352A;
  --color-text-muted: #68796C;
  --color-border: #DFE8DB;
  --color-border-hover: #BACDB4;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --shadow-sm: 0 2px 8px rgba(32, 53, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(32, 53, 42, 0.06);
  --shadow-lg: 0 16px 36px rgba(32, 53, 42, 0.08);

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --max-width: 1200px;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  background-image: radial-gradient(var(--color-border) 0.75px, transparent 0.75px);
  background-size: 24px 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--color-forest);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition-normal);
}
.skip-link:focus {
  top: 15px;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--color-forest);
  outline-offset: 3px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Section Title Typography */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-sub);
  color: var(--color-forest);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
}
.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-matcha);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-forest-dark);
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  line-height: 1.75;
}

.text-center {
  text-align: center;
}
.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-forest);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(53, 106, 70, 0.2);
}
.btn-primary:hover {
  background-color: var(--color-forest-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(25, 61, 45, 0.28);
}

.btn-secondary {
  background-color: var(--color-card-bg);
  color: var(--color-forest);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background-color: var(--color-bg-sub);
  border-color: var(--color-matcha);
  transform: translateY(-2px);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-logo-img {
  height: 42px;
  width: auto;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-weight: 500;
  color: var(--color-text-main);
  font-size: 0.95rem;
  position: relative;
  padding: 8px 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-forest);
}
.nav-link.active::after, .nav-link:hover::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-matcha);
  border-radius: 2px;
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Menu Toggle Button */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
  color: var(--color-forest);
}
.mobile-menu-btn svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
}

.mobile-nav-drawer {
  display: none;
  background-color: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 24px;
}
.mobile-nav-drawer.open {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 500;
  padding: 8px 0;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
}

/* ==========================================================================
   Hero Section (富士山樱花日系和风)
   ========================================================================== */
.hero-section {
  padding: 48px 0 64px;
  background: linear-gradient(180deg, rgba(250, 248, 241, 0.4) 0%, rgba(241, 245, 235, 0.8) 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  z-index: 2;
}

.hero-brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  font-size: 0.875rem;
  color: var(--color-forest);
  font-weight: 600;
}
.hero-brand-pill .sakura-leaf {
  color: #E28C99;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  line-height: 1.25;
  color: var(--color-forest-dark);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-title .highlight {
  color: var(--color-forest);
  position: relative;
  display: inline-block;
}
.hero-title .highlight::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 6px;
  width: 100%;
  height: 8px;
  background-color: rgba(244, 201, 207, 0.45);
  z-index: -1;
  border-radius: 4px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 18px;
  border-top: 1px dashed var(--color-border);
}
.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-main);
  font-weight: 500;
}
.hero-badge-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-forest);
  flex-shrink: 0;
}

.hero-visual-wrapper {
  position: relative;
}

.hero-illustration-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--color-card-bg);
  background-color: var(--color-card-bg);
}

.hero-image {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.hero-illustration-frame:hover .hero-image {
  transform: scale(1.02);
}

.hero-cat-tag {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-forest-dark);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

/* ==========================================================================
   Module 03: Four Core Experiences
   ========================================================================== */
.features-section {
  padding: 72px 0;
  background-color: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}
.feature-icon-wrapper img, .feature-icon-wrapper svg {
  width: 32px;
  height: 32px;
}

.feature-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-forest-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-card-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Module 04: Lifestyle Scenes Cards (三张大型独立插画场景卡片)
   ========================================================================== */
.scenes-section {
  padding: 80px 0;
  background-color: var(--color-bg-sub);
}

.scenes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.scene-card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}
.scene-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-matcha);
}

.scene-image-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.scene-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.scene-card:hover .scene-image-frame img {
  transform: scale(1.04);
}

.scene-tag-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background-color: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(6px);
  color: var(--color-forest);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

.scene-card-body {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.scene-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-forest-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.scene-card-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.scene-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-forest);
}
.scene-card-link:hover {
  color: var(--color-forest-dark);
  text-decoration: underline;
}

/* ==========================================================================
   Module 05: Why Choose Qingyunti (宽幅自然手账图文)
   ========================================================================== */
.why-section {
  padding: 84px 0;
  background-color: var(--color-bg);
}

.why-card-wrapper {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
}

.why-content {
  padding: 48px;
}

.why-list {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.why-list-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.why-bullet-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-bg-sub);
  color: var(--color-forest);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 2px;
  flex-shrink: 0;
}
.why-item-title {
  font-weight: 700;
  color: var(--color-forest-dark);
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.why-item-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.why-media-frame {
  height: 100%;
  min-height: 380px;
  position: relative;
}
.why-media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   Module 06: Supported Applications & Platforms
   ========================================================================== */
.platforms-section {
  padding: 56px 0;
  background-color: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.platform-header-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 28px;
}

.platforms-flex {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 36px;
}

.platform-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-weight: 600;
  color: var(--color-text-main);
  font-size: 0.95rem;
  transition: all var(--transition-normal);
}
.platform-badge:hover {
  background-color: var(--color-bg-sub);
  border-color: var(--color-matcha);
  transform: translateY(-2px);
}
.platform-badge img, .platform-badge svg {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* ==========================================================================
   Module 07: Pricing Plans (套餐方案)
   ========================================================================== */
.pricing-section {
  padding: 84px 0;
  background-color: var(--color-bg);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--shadow-sm);
}
.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border: 2px solid var(--color-forest);
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F9F3 100%);
  box-shadow: var(--shadow-md);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-forest);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.pricing-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--color-border);
}

.plan-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-forest-dark);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.plan-price-box {
  margin: 18px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.plan-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-forest-dark);
}
.plan-amount {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-forest-dark);
  line-height: 1;
}
.plan-cycle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.plan-specs {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-grow: 1;
}
.plan-spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--color-text-main);
}
.plan-spec-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-matcha);
  flex-shrink: 0;
}

/* ==========================================================================
   User Reviews Section (用户评价 · 真实心声)
   ========================================================================== */
.reviews-section {
  padding: 80px 0;
  background-color: var(--color-bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.review-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-matcha);
  box-shadow: var(--shadow-md);
}

.review-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-forest);
  background-color: var(--color-bg-sub);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  align-self: flex-start;
  border: 1px solid var(--color-border);
}

.review-quote-icon {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--color-sage);
  margin-bottom: 8px;
}

.review-content {
  font-size: 0.935rem;
  color: var(--color-text-main);
  line-height: 1.75;
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-footer {
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.review-author-role {
  font-weight: 600;
  color: var(--color-forest-dark);
}

.reviews-community-note {
  max-width: 820px;
  margin: 40px auto 0;
  text-align: center;
  padding: 20px 24px;
  background-color: var(--color-card-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Module 08: Three-Step Guide (三步开始使用)
   ========================================================================== */
.steps-section {
  padding: 80px 0;
  background-color: var(--color-bg-sub);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
  position: relative;
}

.step-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.step-number-img {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.step-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-forest-dark);
}
.step-card-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Module 09: Pre-Purchase Notice (购买前说明)
   ========================================================================== */
.notice-section {
  padding: 64px 0;
  background-color: var(--color-bg);
}

.notice-box {
  background-color: var(--color-bg-sub);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 28px;
}

.notice-item-title {
  font-weight: 700;
  color: var(--color-forest-dark);
  font-size: 1.05rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.notice-item-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Module 10: FAQ (常见问答)
   ========================================================================== */
.faq-section {
  padding: 80px 0;
  background-color: var(--color-bg);
}

.faq-list {
  max-width: 860px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}
.faq-item[open] {
  border-color: var(--color-matcha);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  padding: 22px 28px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-forest-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-icon-arrow {
  width: 20px;
  height: 20px;
  stroke: var(--color-forest);
  transition: transform var(--transition-normal);
}
.faq-item[open] .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 28px 24px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px dashed var(--color-border);
  padding-top: 16px;
}

/* ==========================================================================
   Module 11: Spring Garden CTA (春日花园终章 CTA)
   ========================================================================== */
.spring-cta-section {
  padding: 96px 0;
  position: relative;
  background-color: var(--color-forest-dark);
  color: #ffffff;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin: 40px auto 80px;
}

.spring-cta-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  filter: saturate(1.2);
}

.spring-cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.spring-cta-title {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}

.spring-cta-desc {
  font-size: 1.15rem;
  color: #E2ECE4;
  margin-bottom: 36px;
  line-height: 1.8;
}

/* ==========================================================================
   Module 12: Footer (日系极简页脚)
   ========================================================================== */
.site-footer {
  background-color: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  margin-top: auto;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 24px;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-link {
  font-size: 0.925rem;
  color: var(--color-text-main);
  font-weight: 500;
}
.footer-link:hover {
  color: var(--color-forest);
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Subpages & Article Layouts (阅读优先模式)
   ========================================================================== */
.article-header {
  padding: 64px 0 40px;
  background-color: var(--color-bg-sub);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.breadcrumb-nav a:hover {
  color: var(--color-forest);
}

.article-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  line-height: 1.35;
  color: var(--color-forest-dark);
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-container {
  max-width: 820px;
  margin: 56px auto;
  padding: 0 24px;
}

.article-body {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text-main);
}
.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  color: var(--color-forest-dark);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-bg-sub);
}
.article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-forest);
  margin: 30px 0 14px;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--color-matcha);
  background-color: var(--color-bg-sub);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.article-author-card {
  margin-top: 56px;
  padding: 32px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 20px;
}
.author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--color-forest);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.related-articles {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px dashed var(--color-border);
}

/* ==========================================================================
   Responsive Breakpoints
   1920px, 1440px, 1024px, 768px, 390px, 375px, 360px
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual-wrapper {
    order: -1;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scenes-grid {
    grid-template-columns: 1fr;
  }
  .why-card-wrapper {
    grid-template-columns: 1fr;
  }
  .why-media-frame {
    min-height: 280px;
    order: -1;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .notice-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .spring-cta-title {
    font-size: 2rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .why-content {
    padding: 32px 24px;
  }
  .notice-box {
    padding: 24px 20px;
  }
  .spring-cta-section {
    padding: 64px 20px;
    margin-left: 16px;
    margin-right: 16px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 390px) {
  .hero-title {
    font-size: 1.95rem;
  }
  .btn {
    width: 100%;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .platforms-flex {
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}