/* ============================================
   venera漫画 - 全站样式表
   整体视觉调性：温暖、年轻、富有漫画感
   主色：粉紫渐变  辅色：青色、琥珀
   ============================================ */

:root {
  --color-primary: #A855F7;
  --color-primary-dark: #7E22CE;
  --color-primary-light: #E9D5FF;
  --color-accent-pink: #FF6B9D;
  --color-accent-cyan: #22D3EE;
  --color-accent-amber: #FBBF24;
  --color-accent-rose: #F43F5E;
  --color-accent-indigo: #6366F1;

  --color-ink: #1C1C24;
  --color-text: #2A2A38;
  --color-muted: #6B7280;
  --color-line: #E5E7EB;
  --color-line-soft: #F3F4F6;

  --color-bg: #FFFBF6;
  --color-card: #FFFFFF;
  --color-bg-soft: #FFF7EE;
  --color-bg-cool: #F5F3FF;

  --gradient-hero: linear-gradient(135deg, #FF6B9D 0%, #A855F7 50%, #6366F1 100%);
  --gradient-warm: linear-gradient(135deg, #FF6B9D 0%, #FBBF24 100%);
  --gradient-cool: linear-gradient(135deg, #22D3EE 0%, #6366F1 100%);
  --gradient-card: linear-gradient(135deg, #FDF4FF 0%, #F5F3FF 100%);

  --shadow-sm: 0 1px 2px rgba(28, 28, 36, 0.05);
  --shadow-md: 0 4px 14px rgba(168, 85, 247, 0.10);
  --shadow-lg: 0 10px 30px rgba(168, 85, 247, 0.15);
  --shadow-xl: 0 20px 50px rgba(99, 102, 241, 0.18);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --container-max: 1180px;
  --header-h: 72px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei',
               'Hiragino Sans GB', 'Source Han Sans CN', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(28px, 4vw, 44px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: clamp(20px, 2vw, 24px); }
h4 { font-size: 18px; }

p { margin-bottom: 1em; }

/* ============================================
   通用容器
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   顶部导航
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 251, 246, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-line-soft);
  height: var(--header-h);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--color-ink);
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.brand-text .v {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.brand-text .name {
  color: var(--color-ink);
  font-size: 18px;
}

.brand-text .tag {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 999px;
  margin-left: 6px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 10px;
  transition: all var(--transition);
}

.nav-links a:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary-dark);
}

.nav-links a.active {
  color: var(--color-primary-dark);
  background: var(--color-bg-soft);
}

.nav-cta {
  margin-left: 12px;
  padding: 10px 20px;
  background: var(--gradient-hero);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.nav-cta::before {
  content: '⤓';
  font-size: 13px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--color-bg-soft);
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  position: relative;
  transition: all var(--transition);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top:  6px; }

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.btn-primary::before {
  content: '⤓';
  font-size: 16px;
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary-dark);
  border: 1.5px solid var(--color-primary-light);
}

.btn-secondary:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}

.btn-large {
  padding: 18px 36px;
  font-size: 17px;
}

/* ============================================
   Hero 区
   ============================================ */
.hero {
  position: relative;
  padding: 64px 0 56px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 107, 157, 0.20) 0, transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(34, 211, 238, 0.18) 0, transparent 32%),
    radial-gradient(circle at 50% 88%, rgba(251, 191, 36, 0.16) 0, transparent 30%);
  z-index: 0;
  pointer-events: none;
}

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

.hero-text {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 18px;
  backdrop-filter: blur(6px);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  background: var(--color-accent-pink);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.18);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.hero h1 {
  margin-bottom: 18px;
  line-height: 1.18;
}

.hero h1 .accent {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 560px;
}

.stat-item {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  backdrop-filter: blur(8px);
}

.stat-item .num {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.1;
}

.stat-item .lbl {
  font-size: 12px;
  color: var(--color-muted);
}

.hero-image {
  position: relative;
}

.hero-image .phone {
  width: 320px;
  max-width: 100%;
  margin: 0 auto;
  border-radius: 28px;
  box-shadow: var(--shadow-xl);
  transform: rotate(2deg);
  transition: transform 0.6s ease;
}

.hero-image .phone:hover {
  transform: rotate(0deg) scale(1.02);
}

.hero-image .float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-image .float-card.l { left: -10px; top: 22%; }
.hero-image .float-card.r { right: -10px; bottom: 18%; }

.hero-image .float-card .ico {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.hero-image .float-card.l .ico { background: var(--gradient-warm); color: #fff; }
.hero-image .float-card.r .ico { background: var(--gradient-cool); color: #fff; }

/* ============================================
   通用 section
   ============================================ */
section {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head .eyebrow {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-cool);
  color: var(--color-primary-dark);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.section-head h2 {
  margin-bottom: 12px;
}

.section-head .lead {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================
   功能区
   ============================================ */
.features {
  background: var(--color-bg);
}

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

.feature-card {
  position: relative;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--color-line-soft);
  transition: all var(--transition);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

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

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

.feature-card > * {
  position: relative;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
  color: #fff;
}

.feature-icon.bg-1 { background: var(--gradient-warm); }
.feature-icon.bg-2 { background: var(--gradient-cool); }
.feature-icon.bg-3 { background: var(--gradient-hero); }
.feature-icon.bg-4 { background: linear-gradient(135deg, #FBBF24, #F43F5E); }
.feature-icon.bg-5 { background: linear-gradient(135deg, #34D399, #22D3EE); }
.feature-icon.bg-6 { background: linear-gradient(135deg, #6366F1, #A855F7); }

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.feature-card p {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============================================
   截图展示
   ============================================ */
.gallery {
  background: var(--color-bg-cool);
  position: relative;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.gallery-item {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.gallery-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  display: block;
}

.gallery-item .caption {
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  border-top: 1px solid var(--color-line-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gallery-item .tag {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--color-bg-cool);
  color: var(--color-primary-dark);
  border-radius: 999px;
  font-weight: 600;
}

/* ============================================
   深度内容入口
   ============================================ */
.deep-links {
  background: var(--color-card);
}

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

.deep-card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  color: #fff;
  overflow: hidden;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition);
}

.deep-card:hover {
  transform: translateY(-4px);
}

.deep-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.18) 0, transparent 40%);
  pointer-events: none;
}

.deep-card .deep-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.deep-card h3 {
  color: #fff;
  font-size: 22px;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.deep-card p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.deep-card .deep-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  position: relative;
  z-index: 1;
}

.deep-card .deep-link::after {
  content: '→';
  font-size: 16px;
  transition: transform var(--transition);
}

.deep-card:hover .deep-link::after {
  transform: translateX(4px);
}

.deep-card.c1 { background: var(--gradient-hero); }
.deep-card.c2 { background: linear-gradient(135deg, #22D3EE, #6366F1); }
.deep-card.c3 { background: linear-gradient(135deg, #F43F5E, #FBBF24); }

/* ============================================
   用户评价
   ============================================ */
.reviews {
  background: var(--color-bg-soft);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-line-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 16px;
}

.review-meta {
  flex: 1;
}

.review-meta .name {
  font-weight: 700;
  font-size: 15px;
  color: var(--color-ink);
}

.review-meta .role {
  font-size: 12px;
  color: var(--color-muted);
}

.review-stars {
  display: flex;
  gap: 2px;
  color: var(--color-accent-amber);
  font-size: 14px;
  margin-bottom: 10px;
}

.review-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text);
}

.review-text::before {
  content: '“';
  font-size: 28px;
  color: var(--color-primary-light);
  font-weight: 700;
  line-height: 0;
  display: inline-block;
  margin-right: 4px;
  vertical-align: -8px;
}

/* ============================================
   底部下载通道
   ============================================ */
.download-cta {
  position: relative;
  padding: 80px 0;
  background: var(--gradient-hero);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.download-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.12) 0, transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.10) 0, transparent 30%);
  pointer-events: none;
}

.download-cta > * {
  position: relative;
  z-index: 1;
}

.download-cta h2 {
  color: #fff;
  font-size: clamp(26px, 3.5vw, 38px);
  margin-bottom: 14px;
}

.download-cta p {
  max-width: 540px;
  margin: 0 auto 28px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.92);
}

.download-cta .btn {
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 17px;
  padding: 16px 38px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.20);
}

.download-cta .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.download-cta .info {
  margin-top: 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.download-cta .info span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ============================================
   FAQ 部分
   ============================================ */
.faq {
  background: var(--color-bg);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.open {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-ink);
  user-select: none;
}

.faq-q::after {
  content: '+';
  font-size: 22px;
  color: var(--color-primary);
  transition: transform var(--transition);
  font-weight: 300;
  line-height: 1;
}

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

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 22px;
  color: var(--color-muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.faq-item.open .faq-a {
  max-height: 600px;
  padding: 0 22px 18px;
}

/* ============================================
   流程区（图文并茂步骤）
   ============================================ */
.steps {
  background: linear-gradient(180deg, #fff 0%, var(--color-bg-cool) 100%);
}

.step-grid {
  display: grid;
  gap: 20px;
  max-width: 940px;
  margin: 0 auto;
}

.step-card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-line-soft);
  align-items: center;
  position: relative;
}

.step-card .step-num {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--gradient-hero);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 800;
  box-shadow: var(--shadow-md);
}

.step-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.step-card p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 15px;
}

/* ============================================
   内容页样式
   ============================================ */
.page-hero {
  position: relative;
  padding: 72px 0 56px;
  text-align: center;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 107, 157, 0.20), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.18), transparent 40%),
    var(--color-bg);
  overflow: hidden;
}

.page-hero h1 {
  max-width: 720px;
  margin: 0 auto 16px;
}

.page-hero .lead {
  max-width: 620px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--color-muted);
}

.page-hero .crumbs {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 18px;
}

.page-hero .crumbs a:hover { color: var(--color-primary-dark); }

.content-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

.article {
  padding: 56px 0 32px;
}

.article h2 {
  margin-top: 40px;
  margin-bottom: 18px;
  position: relative;
  padding-left: 16px;
}

.article h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 5px;
  border-radius: 3px;
  background: var(--gradient-hero);
}

.article h3 {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 19px;
}

.article p,
.article li {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--color-text);
}

.article ul,
.article ol {
  margin: 12px 0 16px;
  padding-left: 22px;
}

.article ul { list-style: disc; }
.article ol { list-style: decimal; }

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

.article blockquote {
  background: var(--color-bg-soft);
  border-left: 4px solid var(--color-primary);
  padding: 14px 18px;
  border-radius: 8px;
  margin: 18px 0;
  color: var(--color-text);
  font-size: 15px;
}

.article .callout {
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 20px 0;
  border: 1px solid var(--color-primary-light);
  font-size: 14.5px;
  color: var(--color-primary-dark);
}

.article .callout strong { color: var(--color-primary-dark); }

.article a.inline {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  text-decoration-color: var(--color-primary-light);
}

.article a.inline:hover {
  text-decoration-color: var(--color-primary);
}

.article .toc {
  background: var(--color-bg-cool);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0 32px;
  border: 1px dashed var(--color-primary-light);
}

.article .toc h4 {
  font-size: 14px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article .toc ol {
  list-style: decimal inside;
  padding-left: 0;
  margin: 0;
  columns: 2;
  column-gap: 24px;
}

.article .toc li {
  margin-bottom: 6px;
  font-size: 14px;
}

.article .toc a {
  color: var(--color-text);
}

.article .toc a:hover {
  color: var(--color-primary-dark);
}

.article .step-block {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-md);
  padding: 22px;
  margin: 18px 0;
  align-items: flex-start;
}

.article .step-block .num {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--gradient-cool);
  color: #fff;
  font-weight: 800;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.article .step-block h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.article .step-block p { margin-bottom: 8px; }

.article .step-block ul {
  margin-top: 6px;
  padding-left: 22px;
}

/* ============================================
   底部 footer
   ============================================ */
footer {
  background: #1C1C24;
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 0;
}

.footer-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand .brand-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.65);
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 14px;
  font-weight: 700;
}

.footer-col a {
  display: block;
  font-size: 13.5px;
  padding: 4px 0;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition);
}

.footer-col a:hover { color: #fff; }

.footer-disclaimer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 24px;
  text-align: center;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.85;
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-meta {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.5);
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-meta a { color: rgba(255, 255, 255, 0.7); }
.footer-meta a:hover { color: #fff; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-image { order: -1; max-width: 360px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .deep-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article .toc ol { columns: 1; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  section { padding: 56px 0; }
  .hero { padding: 40px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .deep-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .step-card { grid-template-columns: 1fr; text-align: center; }
  .step-card .step-num { margin: 0 auto; }
  .article .step-block { grid-template-columns: 1fr; text-align: center; }
  .article .step-block .num { margin: 0 auto; }
  .footer-meta { flex-direction: column; gap: 8px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero h1 { font-size: 26px; }
  .btn-large { padding: 14px 24px; font-size: 15px; }
}

/* ============================================
   工具类
   ============================================ */
.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 12px; }
.gap-3 { gap: 18px; }