/* ==========================================================================
   41｜霓虹樱花 (Neon Sakura) - 一云梯 (1yunti.casa) 官方主题
   日系赛博夜景、紫蓝霓虹与樱花粉调，沉静正文阅读区，全端响应式
   ========================================================================== */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* 基础主色调 */
  --bg-deep: #0a0612;
  --bg-surface: #120a1f;
  --bg-surface-alt: #180e2b;
  --bg-card: rgba(26, 17, 45, 0.75);
  --bg-card-hover: rgba(35, 23, 60, 0.9);
  --bg-reading: #0d0817;

  /* 霓虹与樱花色系 */
  --neon-sakura: #ff2a85;
  --neon-sakura-glow: rgba(255, 42, 133, 0.45);
  --neon-sakura-soft: #ffb7d5;
  --neon-sakura-bg: rgba(255, 42, 133, 0.12);
  --neon-cyan: #00f0ff;
  --neon-cyan-glow: rgba(0, 240, 255, 0.35);
  --neon-cyan-bg: rgba(0, 240, 255, 0.1);
  --cyber-purple: #9d4edd;
  --cyber-indigo: #480ca8;

  /* 文本颜色 */
  --text-main: #f8fafc;
  --text-body: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 边框与分割 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(255, 42, 133, 0.3);
  --border-glow: 0 0 15px rgba(255, 42, 133, 0.25);

  /* 阴影 */
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-neon-pink: 0 0 20px rgba(255, 42, 133, 0.4);
  --shadow-neon-cyan: 0 0 20px rgba(0, 240, 255, 0.3);

  /* 尺寸与圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container-max: 1200px;
  --header-height: 72px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-body);
  line-height: 1.7;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 10%, rgba(255, 42, 133, 0.12), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(0, 240, 255, 0.08), transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(157, 78, 221, 0.07), transparent 50%),
    var(--bg-deep);
  background-attachment: fixed;
}

/* 樱花花瓣飘落特效（渐进增强，移动端及减弱动效时禁用） */
.sakura-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.sakura-petal {
  position: absolute;
  top: -20px;
  background: linear-gradient(135deg, rgba(255, 183, 213, 0.6), rgba(255, 42, 133, 0.4));
  border-radius: 12px 1px 12px 1px;
  filter: drop-shadow(0 0 4px rgba(255, 42, 133, 0.3));
  animation: fall linear infinite;
  opacity: 0.6;
}

@keyframes fall {
  0% {
    transform: translateY(0) rotate(0deg) translateX(0);
    opacity: 0.7;
  }
  50% {
    transform: translateY(50vh) rotate(180deg) translateX(25px);
    opacity: 0.9;
  }
  100% {
    transform: translateY(105vh) rotate(360deg) translateX(-20px);
    opacity: 0;
  }
}

@media (max-width: 768px), (prefers-reduced-motion: reduce) {
  .sakura-ambient {
    display: none;
  }
}

/* 统一排版与链接 */
a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover {
  color: #70f4ff;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 1.25rem;
}

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 2;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 6, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  text-shadow: 0 0 10px rgba(255, 42, 133, 0.4);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--neon-sakura), var(--cyber-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 0 12px var(--neon-sakura-glow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--neon-sakura-soft);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--neon-sakura);
  box-shadow: 0 0 8px var(--neon-sakura);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.65rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-sakura) 0%, #d91d6c 100%);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(255, 42, 133, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ff4797 0%, #ff1f7b 100%);
  box-shadow: 0 0 24px rgba(255, 42, 133, 0.7);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
  transform: translateY(-2px);
}

.btn-outline-sakura {
  background: transparent;
  color: var(--neon-sakura-soft);
  border: 1px solid var(--neon-sakura);
}

.btn-outline-sakura:hover {
  background: var(--neon-sakura-bg);
  box-shadow: 0 0 15px var(--neon-sakura-glow);
  color: #fff;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* 霓虹徽章与标签 */
.cyber-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 9999px;
  background: var(--neon-sakura-bg);
  color: var(--neon-sakura-soft);
  border: 1px solid rgba(255, 42, 133, 0.4);
  box-shadow: 0 0 10px rgba(255, 42, 133, 0.2);
  margin-bottom: 1.25rem;
}

.cyber-badge.cyan {
  background: var(--neon-cyan-bg);
  color: #70f4ff;
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

/* Hero 首屏区 */
.hero-section {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #ffffff 20%, #fbcfe8 50%, var(--neon-cyan) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 25px rgba(255, 42, 133, 0.25);
  word-break: break-word;
  overflow-wrap: break-word;
}

.mobile-br {
  display: none;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-trust-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  max-width: 860px;
  margin: 0 auto;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.trust-icon {
  color: var(--neon-sakura);
  font-size: 1rem;
}

/* 通用区块标题 */
.section {
  padding: 4rem 0;
  position: relative;
}

.section-alt {
  background: rgba(18, 10, 31, 0.5);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  margin-bottom: 0.75rem;
  position: relative;
  display: inline-block;
}

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

/* 新手步骤卡片（四步） */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.85rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 42, 133, 0.4);
  box-shadow: 0 10px 25px -5px rgba(255, 42, 133, 0.2);
}

.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-sakura), var(--neon-cyan));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.step-card:hover::before {
  opacity: 1;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(255, 42, 133, 0.3);
  margin-bottom: 0.75rem;
}

.step-title {
  font-size: 1.2rem;
  margin-bottom: 0.65rem;
  color: var(--text-main);
}

.step-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* 交互式新手进度导览（亮点实用功能） */
.progress-interactive-box {
  background: linear-gradient(135deg, rgba(26, 17, 45, 0.8) 0%, rgba(18, 10, 31, 0.9) 100%);
  border: 1px solid rgba(255, 42, 133, 0.3);
  box-shadow: 0 0 25px rgba(255, 42, 133, 0.15);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 2rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.progress-title-group h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.progress-title-group p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.progress-bar-wrap {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.progress-bar-fill {
  height: 100%;
  width: 20%;
  background: linear-gradient(90deg, var(--neon-sakura), var(--neon-cyan));
  box-shadow: 0 0 10px var(--neon-sakura-glow);
  transition: width 0.4s ease;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.check-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 42, 133, 0.3);
}

.check-item.checked {
  background: rgba(255, 42, 133, 0.08);
  border-color: var(--neon-sakura);
}

.check-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--neon-sakura);
  margin-top: 2px;
  cursor: pointer;
}

.check-label-wrap strong {
  display: block;
  font-size: 0.98rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.check-label-wrap span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.guidance-result-card {
  background: rgba(10, 6, 18, 0.7);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.guidance-text-wrap {
  flex: 1;
  min-width: 260px;
}

.guidance-badge {
  color: var(--neon-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
  display: block;
}

.guidance-title {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 0.4rem;
}

.guidance-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* 六篇文章卡片网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 12px 28px -8px rgba(0, 240, 255, 0.2);
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 0.85rem;
}

.article-meta-row span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.article-card-title {
  font-size: 1.22rem;
  margin-bottom: 0.85rem;
  line-height: 1.4;
}

.article-card-title a {
  color: var(--text-main);
}

.article-card-title a:hover {
  color: var(--neon-sakura-soft);
}

.article-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
  font-size: 0.9rem;
}

/* 套餐说明区 */
.pricing-guide-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 2rem;
}

.pricing-notice-banner {
  background: rgba(255, 42, 133, 0.08);
  border-left: 4px solid var(--neon-sakura);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 2rem;
  font-size: 0.94rem;
  line-height: 1.7;
}

.pricing-tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.pricing-tier-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.pricing-tier-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.tier-name {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.tier-target {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.tier-status-pill {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: rgba(255, 42, 133, 0.15);
  color: var(--neon-sakura-soft);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  width: fit-content;
}

.tier-features {
  list-style: none;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.tier-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--text-body);
  margin-bottom: 0.65rem;
}

.tier-features li::before {
  content: "✓";
  color: var(--neon-cyan);
  font-weight: bold;
}

/* 评价区：真实空态 (严格遵守不造假原则) */
.reviews-section {
  padding: 4rem 0;
}

.reviews-empty-box {
  background: rgba(26, 17, 45, 0.5);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 3rem 2rem;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.reviews-empty-icon {
  font-size: 2.5rem;
  color: var(--neon-sakura-soft);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.reviews-empty-title {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.reviews-empty-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* FAQ 常见问题区 */
.faq-grid {
  display: grid;
  gap: 1rem;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  min-height: 44px;
}

.faq-icon {
  color: var(--neon-sakura);
  font-size: 1.25rem;
  transition: transform 0.25s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 0.25rem;
  padding-top: 0.85rem;
}

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

/* 文章正文页面（沉静阅读底色） */
.article-reading-layout {
  padding: 3rem 0 5rem;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--neon-sakura-soft);
}

.breadcrumbs-sep {
  color: var(--text-dim);
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-page-title {
  font-size: clamp(1.85rem, 4vw, 2.7rem);
  line-height: 1.25;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-summary-lead {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid var(--neon-cyan);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 2.5rem;
}

/* 沉静阅读正文内容排版规范 */
.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
  max-width: 860px;
}

.article-body h2 {
  font-size: 1.65rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  color: #fff;
}

.article-body h3 {
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.85rem;
  color: #f1f5f9;
}

.article-body h4 {
  font-size: 1.15rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--neon-sakura-soft);
}

.article-body p {
  margin-bottom: 1.4rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.65rem;
}

/* 表格响应式容器 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.75rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  -webkit-overflow-scrolling: touch;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
  text-align: left;
  min-width: 580px;
}

.article-body th {
  background: rgba(255, 42, 133, 0.12);
  color: #fff;
  padding: 0.85rem 1rem;
  font-weight: 600;
  border-bottom: 2px solid rgba(255, 42, 133, 0.3);
}

.article-body td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
}

.article-body tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Callout 提示框 */
.article-callout {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  margin: 1.75rem 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

.callout-note {
  background: rgba(0, 240, 255, 0.08);
  border-left: 4px solid var(--neon-cyan);
  color: #e0f2fe;
}

.callout-warning {
  background: rgba(255, 42, 133, 0.09);
  border-left: 4px solid var(--neon-sakura);
  color: #ffe4e6;
}

/* 相关文章卡片 */
.related-articles-section {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  background: #07040d;
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 0.85rem;
  max-width: 360px;
  line-height: 1.7;
  color: var(--text-dim);
}

.footer-col-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--neon-sakura-soft);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.84rem;
  color: var(--text-dim);
}

/* 移动端吸底 CTA 栏 (紧凑，不遮挡正文与系统手势区) */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(12, 8, 20, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 42, 133, 0.3);
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  z-index: 99;
  box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.5);
}

.mobile-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.mobile-cta-info {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.mobile-cta-info strong {
  display: block;
  color: #fff;
  font-size: 0.92rem;
}

/* 移动端与全断点适配 */
@media (max-width: 992px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .container {
    padding: 0 1rem;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(12, 8, 20, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .nav-menu.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .header-actions .btn {
    display: none;
  }

  .hero-section {
    padding: 2.5rem 0 1.75rem;
  }

  .hero-title {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
    line-height: 1.3;
    word-break: break-word;
  }

  .mobile-br {
    display: block;
  }

  .hero-subtitle {
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-trust-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    font-size: 0.82rem;
  }

  .section-title {
    font-size: 1.55rem;
    line-height: 1.35;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .progress-interactive-box {
    padding: 1.25rem;
  }

  .checklist-grid {
    grid-template-columns: 1fr;
  }

  .pricing-tiers-grid {
    grid-template-columns: 1fr;
  }

  .pricing-guide-box {
    padding: 1.25rem;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .mobile-sticky-cta {
    display: block;
  }

  .mobile-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .mobile-cta-info {
    flex: 1;
    min-width: 0;
  }

  .mobile-cta-info strong {
    font-size: 0.88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mobile-cta-info span {
    font-size: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
  }

  .mobile-sticky-cta .btn {
    flex-shrink: 0;
    min-height: 38px;
    padding: 0.45rem 0.9rem;
    font-size: 0.84rem;
  }

  /* 保证底部正文有足够的 padding 避免被吸底 CTA 覆盖 */
  body {
    padding-bottom: 78px;
  }
}

/* 屏幕断点微调：360px、390px、430px */
@media (max-width: 430px) {
  .hero-title {
    font-size: 1.55rem;
  }

  .step-card {
    padding: 1.25rem;
  }

  .guidance-result-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .guidance-result-card .btn {
    width: 100%;
  }
}

/* 打印与高对比度支持 */
@media print {
  .site-header, .site-footer, .mobile-sticky-cta, .sakura-ambient, .btn {
    display: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .article-body {
    color: #000 !important;
  }
}