/* IKUUU (ikuuu.pics) - Z世代潮酷数字风 (Gen Z Neo-Digital / Neo-Brutalist Pop Style) */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --primary-border: #818cf8;
  --accent-cyan: #06b6d4;
  --accent-cyan-light: #cffafe;
  --accent-lime: #10b981;
  --accent-lime-light: #d1fae5;
  --accent-yellow: #facc15;
  --accent-yellow-light: #fef9c3;
  --accent-pink: #ec4899;
  --accent-pink-light: #fce7f3;
  --text-main: #0f172a;
  --text-muted: #334155;
  --text-light: #64748b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --stroke-dark: #0f172a;
  --border-color: #cbd5e1;
  --neo-shadow-sm: 2px 2px 0px #0f172a;
  --neo-shadow-md: 4px 4px 0px #0f172a;
  --neo-shadow-lg: 6px 6px 0px #0f172a;
  --neo-shadow-hover: 7px 7px 0px #0f172a;
  --max-width: 1140px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 84px;
  background-image: radial-gradient(#cbd5e1 1.2px, transparent 1.2px);
  background-size: 24px 24px;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.16s ease;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

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

:focus-visible {
  outline: 3px solid #0f172a;
  outline-offset: 3px;
}

/* 布局容器 */
.site-container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 顶部导航 - 潮酷贴纸边框感 */
.site-header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--stroke-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 0px #0f172a;
}

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

.brand-logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.6px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none !important;
}

.brand-badge {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--text-main);
  background-color: var(--accent-yellow);
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  transform: rotate(-3deg);
}

.nav-toggle {
  display: none;
  background: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  min-height: 44px;
  min-width: 44px;
}

.nav-toggle:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px var(--stroke-dark);
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 22px;
}

.nav-menu a {
  color: var(--text-main);
  font-size: 0.98rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  transition: all 0.16s ease;
}

.nav-menu a:hover {
  background-color: var(--primary-light);
  border-color: var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  text-decoration: none;
  color: var(--primary);
  transform: translate(-1px, -1px);
}

.header-cta {
  display: flex;
  align-items: center;
}

/* Z世代潮酷按钮 (Neo-Brutalist Solid Offset Shadow Buttons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 24px;
  font-size: 1rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  cursor: pointer;
  transition: all 0.16s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 2px solid var(--stroke-dark);
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--neo-shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
  transform: translate(-2px, -2px);
  box-shadow: var(--neo-shadow-hover);
}

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: var(--neo-shadow-sm);
}

.btn-outline {
  background-color: #ffffff;
  color: var(--text-main);
  box-shadow: var(--neo-shadow-md);
}

.btn-outline:hover {
  background-color: var(--accent-yellow-light);
  color: var(--text-main);
  transform: translate(-2px, -2px);
  box-shadow: var(--neo-shadow-hover);
}

.btn-outline:active {
  transform: translate(2px, 2px);
  box-shadow: var(--neo-shadow-sm);
}

.btn-large {
  min-height: 52px;
  padding: 13px 32px;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* 潮流贴纸胶囊 (Gen Z Sticker Pill) */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #ffffff;
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 22px;
  transform: rotate(-1deg);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  background-color: var(--accent-lime);
  border-radius: 50%;
  position: relative;
  border: 1px solid var(--stroke-dark);
}

.pulse-dot::after {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 50%;
  border: 2px solid var(--accent-lime);
  animation: pulseRing 1.8s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

@keyframes pulseRing {
  0% { transform: scale(0.7); opacity: 0.9; }
  70% { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* Hero 区域 (Z世代潮酷双栏排版) */
.hero-section {
  padding: 68px 0 60px;
  background-color: #ffffff;
  border-bottom: 2px solid var(--stroke-dark);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 44px;
}

.hero-content {
  text-align: left;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 950;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 22px;
  letter-spacing: -0.8px;
}

.hero-title span {
  display: inline-block;
  background-color: var(--accent-yellow);
  color: var(--text-main);
  padding: 0 10px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--stroke-dark);
  box-shadow: 3px 3px 0px var(--stroke-dark);
  transform: rotate(1deg);
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  margin-bottom: 34px;
  line-height: 1.72;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 38px;
  flex-wrap: wrap;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 700;
}

.hero-highlight-item {
  display: flex;
  align-items: center;
  gap: 7px;
  background-color: var(--bg-page);
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.hero-highlight-item svg {
  color: var(--primary);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Hero 右侧潮酷极客控制台 (Cyberpunk Gaming Terminal Card) */
.hero-visual-card {
  background-color: #ffffff;
  border: 2.5px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--neo-shadow-lg);
  position: relative;
  transform: rotate(1.5deg);
  transition: transform 0.2s ease;
}

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

.visual-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px dashed var(--stroke-dark);
}

.visual-card-title {
  font-size: 1rem;
  font-weight: 900;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.visual-status-pill {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-main);
  background-color: var(--accent-lime);
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.visual-node-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.visual-node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background-color: var(--bg-page);
  border: 2px solid var(--stroke-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--neo-shadow-sm);
  transition: all 0.16s ease;
}

.visual-node-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neo-shadow-md);
  background-color: var(--primary-light);
}

.node-info-col {
  display: flex;
  align-items: center;
  gap: 10px;
}

.node-flag {
  font-size: 1.25rem;
}

.node-name {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
}

.node-subtext {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-light);
}

.node-tag {
  font-size: 0.74rem;
  padding: 2px 7px;
  background-color: var(--accent-yellow);
  border: 1px solid var(--stroke-dark);
  color: var(--text-main);
  border-radius: 4px;
  font-weight: 800;
}

.node-ping-col {
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-ping-val {
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--primary);
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* 章节头部 - 贴纸标签 */
.section-wrapper {
  padding: 76px 0;
}

.section-wrapper.alt-bg {
  background-color: #ffffff;
  border-top: 2px solid var(--stroke-dark);
  border-bottom: 2px solid var(--stroke-dark);
}

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--text-main);
  background-color: var(--accent-cyan-light);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  letter-spacing: 0.6px;
  transform: rotate(-1.5deg);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 950;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 660px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 500;
}

/* 特性卡网格 (Features) - 新丑风立体卡 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 26px;
}

.feature-card {
  background-color: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  box-shadow: var(--neo-shadow-md);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.feature-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--neo-shadow-hover);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  background-color: var(--accent-yellow-light);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.feature-icon-box svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 850;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-text {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.68;
}

/* 使用场景卡 (Use Cases) */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 28px;
}

.case-card {
  background-color: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  box-shadow: var(--neo-shadow-md);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.case-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--neo-shadow-hover);
}

.case-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.case-audience {
  font-size: 0.84rem;
  font-weight: 850;
  color: var(--text-main);
  background-color: var(--accent-pink-light);
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.case-icon-badge {
  font-size: 1.35rem;
}

.case-title {
  font-size: 1.28rem;
  font-weight: 850;
  margin-bottom: 12px;
}

.case-device {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px dashed var(--border-color);
}

.case-device strong {
  color: var(--primary);
}

.case-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex-grow: 1;
}

/* 节点实测延迟与质量矩阵表格 (Neo-Brutalist Matrix Table) */
.matrix-wrapper {
  background-color: var(--bg-card);
  border: 2.5px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  box-shadow: var(--neo-shadow-lg);
  overflow: hidden;
  margin-top: 32px;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.matrix-table th {
  background-color: var(--stroke-dark);
  color: #ffffff;
  padding: 16px 20px;
  font-weight: 800;
  font-size: 0.95rem;
}

.matrix-table td {
  padding: 16px 20px;
  border-bottom: 1.5px solid var(--border-color);
  color: var(--text-muted);
}

.matrix-table tr:hover td {
  background-color: var(--primary-light);
}

.status-badge-ok {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-main);
  background-color: var(--accent-lime);
  border: 1px solid var(--stroke-dark);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 800;
  font-size: 0.8rem;
}

/* 流媒体与 AI 支持专区 */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.platform-card {
  background-color: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--neo-shadow-md);
}

.platform-title {
  font-size: 1.3rem;
  font-weight: 850;
  margin-bottom: 16px;
  color: var(--text-main);
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.platform-tag {
  background-color: #ffffff;
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  color: var(--text-main);
  font-size: 0.88rem;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-weight: 750;
  display: flex;
  align-items: center;
  gap: 6px;
}

.platform-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 定价套餐与月付/年付动态切换 (Pricing Switcher) */
.pricing-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 42px;
}

.pricing-toggle-pill {
  display: inline-flex;
  background-color: #ffffff;
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  padding: 4px;
  border-radius: var(--radius-full);
}

.toggle-btn {
  background: transparent;
  border: none;
  padding: 8px 22px;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all 0.18s ease;
  min-height: 40px;
}

.toggle-btn.active {
  background-color: var(--stroke-dark);
  color: #ffffff;
}

.save-badge {
  background-color: var(--accent-yellow);
  color: var(--text-main);
  border: 1.5px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  font-size: 0.8rem;
  font-weight: 850;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transform: rotate(2deg);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  border-radius: var(--radius-md);
  padding: 38px 28px;
  box-shadow: var(--neo-shadow-md);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.2s ease;
}

.pricing-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--neo-shadow-hover);
}

.pricing-card.featured {
  background-color: var(--primary-light);
  border: 2.5px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-lg);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-yellow);
  color: var(--text-main);
  border: 2px solid var(--stroke-dark);
  box-shadow: 2px 2px 0px var(--stroke-dark);
  font-size: 0.84rem;
  font-weight: 900;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 850;
  margin-bottom: 6px;
}

.pricing-target {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 18px;
  font-weight: 600;
}

.pricing-price {
  font-size: 2.6rem;
  font-weight: 950;
  color: var(--text-main);
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  letter-spacing: -0.5px;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.pricing-period {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 6px;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

.pricing-features {
  list-style: none;
  margin: 22px 0 28px;
  flex-grow: 1;
  border-top: 2px dashed var(--border-color);
  padding-top: 22px;
}

.pricing-features li {
  font-size: 0.96rem;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.pricing-features li svg {
  width: 18px;
  height: 18px;
  color: var(--accent-lime);
  flex-shrink: 0;
}

/* FAQ 手风琴 (details / summary 原生组件 - 潮酷线框) */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--bg-card);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all 0.18s ease;
}

.faq-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neo-shadow-md);
}

.faq-item[open] {
  box-shadow: var(--neo-shadow-md);
  border-color: var(--stroke-dark);
}

.faq-summary {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  padding: 20px 24px;
  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-summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-summary::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.74;
  border-top: 1.5px dashed var(--border-color);
  padding-top: 14px;
}

/* Final CTA - 高能色块 */
.final-cta-section {
  padding: 76px 0;
  background-color: var(--primary);
  color: #ffffff;
  text-align: center;
  position: relative;
  border-top: 2.5px solid var(--stroke-dark);
  border-bottom: 2.5px solid var(--stroke-dark);
}

.final-cta-title {
  font-size: 2.4rem;
  font-weight: 950;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.final-cta-desc {
  font-size: 1.15rem;
  color: var(--primary-light);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.68;
  font-weight: 600;
}

.final-cta-btn {
  background-color: var(--accent-yellow);
  color: var(--text-main);
  font-weight: 900;
  min-height: 52px;
  padding: 13px 38px;
  font-size: 1.12rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none !important;
  border: 2.5px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-lg);
  transition: all 0.16s ease;
}

.final-cta-btn:hover {
  background-color: #ffffff;
  color: var(--text-main);
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0px var(--stroke-dark);
}

/* 页脚 */
.site-footer {
  background-color: #ffffff;
  border-top: 2px solid var(--stroke-dark);
  padding: 46px 0 32px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 26px;
  padding-bottom: 24px;
  border-bottom: 2px dashed var(--border-color);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo {
  font-size: 1.35rem;
  color: var(--text-main);
  font-weight: 900;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--text-light);
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.footer-links a {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 750;
}

.footer-links a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.footer-bottom {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

.footer-disclosure {
  margin-top: 6px;
  font-size: 0.84rem;
  color: var(--text-light);
  font-weight: 600;
}

/* 移动端吸底 CTA - 潮酷悬浮条 */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ffffff;
  border-top: 2.5px solid var(--stroke-dark);
  padding: 12px 18px;
  box-shadow: 0 -6px 0px rgba(15, 23, 42, 0.1);
  z-index: 999;
  transform: translateY(100%);
  transition: transform 0.25s ease;
}

.mobile-sticky-cta.visible {
  transform: translateY(0);
}

.mobile-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mobile-cta-info {
  display: flex;
  flex-direction: column;
}

.mobile-cta-label {
  font-size: 0.95rem;
  font-weight: 850;
  color: var(--text-main);
}

.mobile-cta-tip {
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 600;
}

/* 文章正文与内容页排版 */
.article-header {
  padding: 50px 0 32px;
  background-color: #ffffff;
  border-bottom: 2px solid var(--stroke-dark);
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 14px;
  font-weight: 600;
}

.breadcrumb a {
  color: var(--text-main);
  font-weight: 750;
}

.breadcrumb span {
  margin: 0 6px;
}

.article-title {
  font-size: 2.25rem;
  font-weight: 950;
  line-height: 1.32;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.article-meta {
  display: flex;
  gap: 18px;
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
}

.article-body-wrapper {
  padding: 50px 0;
}

.article-content {
  background-color: #ffffff;
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-md);
  border-radius: var(--radius-md);
  padding: 44px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #1e293b;
}

.article-lead {
  font-size: 1.12rem;
  color: var(--text-main);
  padding: 18px 22px;
  background-color: var(--accent-yellow-light);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  border-radius: var(--radius-sm);
  margin-bottom: 36px;
  line-height: 1.74;
  font-weight: 600;
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--text-main);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--stroke-dark);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 850;
  color: var(--text-main);
  margin-top: 26px;
  margin-bottom: 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 26px;
}

.article-content li {
  margin-bottom: 9px;
}

.article-callout {
  background-color: var(--primary-light);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  margin: 30px 0;
}

.article-callout-title {
  font-weight: 850;
  margin-bottom: 8px;
  color: var(--text-main);
}

.article-cta-box {
  background-color: #ffffff;
  border: 2.5px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-lg);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  text-align: center;
  margin: 46px 0 24px;
}

.article-cta-box h3 {
  margin-top: 0;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 22px;
  font-weight: 500;
}

/* 站内互链区域 */
.article-related {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 2px dashed var(--border-color);
}

.article-related h3 {
  font-size: 1.15rem;
  font-weight: 850;
  margin-bottom: 16px;
}

.related-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-links a {
  font-size: 1rem;
  font-weight: 700;
}

/* 静态说明页 */
.page-container {
  padding: 50px 0 68px;
}

.page-card {
  background-color: #ffffff;
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-md);
  border-radius: var(--radius-md);
  padding: 44px 48px;
}

.page-title {
  font-size: 2.2rem;
  font-weight: 950;
  margin-bottom: 12px;
  color: var(--text-main);
}

.page-updated {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 2px dashed var(--border-color);
  font-weight: 600;
}

.page-body h2 {
  font-size: 1.4rem;
  font-weight: 850;
  color: var(--text-main);
  margin-top: 32px;
  margin-bottom: 14px;
}

.page-body p {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.page-body ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

.page-body li {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 9px;
  line-height: 1.7;
}

/* 网站地图网格 */
.sitemap-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 28px;
}

.sitemap-group {
  background-color: var(--bg-page);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.sitemap-group h3 {
  font-size: 1.18rem;
  font-weight: 850;
  margin-bottom: 16px;
  color: var(--text-main);
  border-bottom: 2px solid var(--stroke-dark);
  padding-bottom: 8px;
}

.sitemap-group ul {
  list-style: none;
  padding-left: 0;
}

.sitemap-group li {
  margin-bottom: 12px;
}

/* 指南卡片样式 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.guide-card {
  background-color: #ffffff;
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-md);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.guide-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--neo-shadow-hover);
}

.guide-thumb-box {
  width: 100%;
  height: 136px;
  background-color: var(--accent-yellow-light);
  border: 2px solid var(--stroke-dark);
  box-shadow: var(--neo-shadow-sm);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--text-main);
}

.guide-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 12px;
  font-weight: 600;
}

.guide-title {
  font-size: 1.25rem;
  font-weight: 850;
  margin-bottom: 12px;
}

.guide-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* 响应式断点 */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .hero-content {
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-highlights {
    justify-content: center;
  }
  .hero-visual-card {
    max-width: 480px;
    margin: 0 auto;
    transform: rotate(0deg);
  }
}

@media (max-width: 860px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .article-content {
    padding: 28px 22px;
  }
  .page-card {
    padding: 28px 22px;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 2px solid var(--stroke-dark);
    padding: 20px;
    box-shadow: 0 8px 0px rgba(15, 23, 42, 0.15);
  }
  .site-nav.nav-open {
    display: block;
  }
  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .nav-menu li {
    width: 100%;
  }
  .nav-menu a {
    display: block;
    padding: 10px 14px;
    font-size: 1.05rem;
    background-color: var(--bg-page);
    border: 1.5px solid var(--stroke-dark);
  }
  .hero-title {
    font-size: 1.95rem;
  }
  .hero-subtitle {
    font-size: 1.04rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .section-wrapper {
    padding: 52px 0;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .mobile-sticky-cta {
    display: block;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
}

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