/* ==========================================================================
   SSRDog 网络加速服务 - 街机弹珠机主题核心样式表
   配色：深紫背景(#111020) 暖黄边框(#F8DA63) 粉色(#F088B6) 薄荷绿(#77E0CE)
   ========================================================================== */

:root {
  --bg-primary: #111020;
  --bg-card: #18172e;
  --bg-card-hover: #22203f;
  --bg-subtle: #29274c;
  --border-yellow: #F8DA63;
  --border-subtle: rgba(248, 218, 99, 0.25);
  --color-pink: #F088B6;
  --color-mint: #77E0CE;
  --color-yellow: #F8DA63;
  --text-main: #FFFFFF;
  --text-sub: #D1D5DB;
  --text-muted: #9CA3AF;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --shadow-neon-yellow: 0 0 15px rgba(248, 218, 99, 0.3);
  --shadow-neon-pink: 0 0 15px rgba(240, 136, 182, 0.3);
  --shadow-neon-mint: 0 0 15px rgba(119, 224, 206, 0.3);
  --container-max: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 10%, #1d1b38 0%, #111020 70%);
}

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

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

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

/* 键盘可访问性 */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid var(--border-yellow);
  outline-offset: 3px;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   头部与导航 (增强防折行与自适应间距)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(17, 16, 32, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-yellow);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.site-header .container {
  max-width: 1360px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--color-yellow);
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-logo span {
  white-space: nowrap;
}

.logo-pinball-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--color-pink);
  background: radial-gradient(circle, var(--color-yellow) 30%, var(--bg-primary) 70%);
  box-shadow: 0 0 10px rgba(240, 136, 182, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--bg-primary);
  font-weight: bold;
  flex-shrink: 0;
}

.brand-logo span.badge-tag {
  font-size: 0.72rem;
  background: rgba(119, 224, 206, 0.15);
  color: var(--color-mint);
  border: 1px solid var(--color-mint);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  flex-shrink: 1;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.1vw, 16px);
  list-style: none;
  white-space: nowrap;
}

.nav-link {
  font-size: 0.92rem;
  color: var(--text-sub);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: inline-block;
}

.nav-link:hover {
  color: var(--color-yellow);
  background: rgba(248, 218, 99, 0.08);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  white-space: nowrap;
}

.header-cta-group .btn-arcade {
  padding: 8px 18px;
  font-size: 0.9rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-arcade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  background-color: var(--color-yellow);
  color: #111020;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-yellow);
  box-shadow: 0 4px 0 #b39726;
  transition: transform 0.1s ease, box-shadow 0.1s ease, background-color var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-arcade:hover {
  background-color: #ffe678;
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #b39726, var(--shadow-neon-yellow);
}

.btn-arcade:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #b39726;
}

.btn-arcade-secondary {
  background-color: transparent;
  color: var(--color-mint);
  border: 2px solid var(--color-mint);
  box-shadow: 0 4px 0 #3a8a7d;
}

.btn-arcade-secondary:hover {
  background-color: rgba(119, 224, 206, 0.12);
  color: #a2faed;
  box-shadow: 0 6px 0 #3a8a7d, var(--shadow-neon-mint);
}

.btn-arcade-pink {
  background-color: var(--color-pink);
  color: #111020;
  border: 2px solid var(--color-pink);
  box-shadow: 0 4px 0 #a84c78;
}

.btn-arcade-pink:hover {
  background-color: #ffa1ca;
  box-shadow: 0 6px 0 #a84c78, var(--shadow-neon-pink);
}

/* 汉堡菜单按钮 (移动端) */
.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 2px solid var(--border-yellow);
  border-radius: var(--radius-md);
  color: var(--color-yellow);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-yellow);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ==========================================================================
   Hero 首屏街机弹珠站
   ========================================================================== */
.hero-section {
  padding: 60px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-badge-pill {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(248, 218, 99, 0.1);
  border: 1px solid var(--border-yellow);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--color-yellow);
  font-weight: 600;
  white-space: nowrap;
}

.hero-badge-pill .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-mint);
  box-shadow: 0 0 8px var(--color-mint);
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-main);
}

.hero-title .highlight-yellow {
  color: var(--color-yellow);
  text-shadow: 0 0 20px rgba(248, 218, 99, 0.4);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 6px 0;
}

.highlight-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  white-space: nowrap;
}

.highlight-tag svg {
  width: 16px;
  height: 16px;
  color: var(--color-mint);
}

.hero-cta-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

.hero-cta-box .btn-arcade {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.hero-cta-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 街机弹珠机容器 */
.pinball-cabinet {
  background: #141327;
  border: 4px solid var(--border-yellow);
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 0 20px rgba(248, 218, 99, 0.15);
  padding: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cabinet-top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px dashed rgba(248, 218, 99, 0.3);
  padding-bottom: 12px;
}

.arcade-brand-title {
  font-weight: 900;
  font-size: 0.95rem;
  color: var(--color-yellow);
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.arcade-status-tag {
  font-size: 0.75rem;
  padding: 3px 8px;
  background: rgba(119, 224, 206, 0.15);
  color: var(--color-mint);
  border: 1px solid var(--color-mint);
  border-radius: var(--radius-sm);
  font-family: monospace;
  white-space: nowrap;
}

.pinball-svg-stage {
  width: 100%;
  aspect-ratio: 400 / 480;
  max-height: 480px;
  background: #0d0c18;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(240, 136, 182, 0.4);
  position: relative;
  overflow: hidden;
}

.pinball-svg-stage svg {
  width: 100%;
  height: 100%;
}

.pinball-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.pinball-btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-ctrl {
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-yellow);
  background: var(--bg-card);
  color: var(--color-yellow);
  box-shadow: 0 3px 0 #b39726;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.btn-ctrl:hover {
  background: var(--color-yellow);
  color: #111020;
  transform: translateY(-1px);
  box-shadow: 0 4px 0 #b39726;
}

.btn-ctrl:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 #b39726;
}

.btn-ctrl-mint {
  border-color: var(--color-mint);
  color: var(--color-mint);
  box-shadow: 0 3px 0 #3a8a7d;
}

.btn-ctrl-mint:hover {
  background: var(--color-mint);
  color: #111020;
  box-shadow: 0 4px 0 #3a8a7d;
}

.pinball-node-ticker {
  font-size: 0.8rem;
  color: var(--text-sub);
  background: #0d0c18;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ticker-highlight {
  color: var(--color-pink);
  font-weight: bold;
}

/* ==========================================================================
   通用的区块排版
   ========================================================================== */
.section-block {
  padding: 80px 0;
  position: relative;
}

section[id] {
  scroll-margin-top: 86px;
}

.section-block-alt {
  background-color: rgba(24, 23, 46, 0.45);
  border-top: 1px solid rgba(248, 218, 99, 0.15);
  border-bottom: 1px solid rgba(248, 218, 99, 0.15);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-mint);
  background: rgba(119, 224, 206, 0.1);
  border: 1px solid var(--color-mint);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ==========================================================================
   购买流程：三步服务说明
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 2px solid rgba(248, 218, 99, 0.35);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-yellow);
  box-shadow: var(--shadow-neon-yellow);
}

.step-num-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-yellow);
  color: #111020;
  font-size: 1.3rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 0 #b39726;
  flex-shrink: 0;
}

.step-card:nth-child(2) .step-num-badge {
  background-color: var(--color-pink);
  box-shadow: 0 4px 0 #a84c78;
}

.step-card:nth-child(3) .step-num-badge {
  background-color: var(--color-mint);
  box-shadow: 0 4px 0 #3a8a7d;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.step-text {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ==========================================================================
   优势：连接组件
   ========================================================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.advantage-card {
  background: var(--bg-card);
  border: 2px solid rgba(240, 136, 182, 0.3);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition-normal);
}

.advantage-card:hover {
  border-color: var(--color-pink);
  box-shadow: var(--shadow-neon-pink);
  transform: translateY(-4px);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(240, 136, 182, 0.15);
  border: 1px solid var(--color-pink);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-pink);
  flex-shrink: 0;
}

.advantage-icon svg {
  width: 24px;
  height: 24px;
}

.advantage-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.advantage-text {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* ==========================================================================
   节点区：路径示意与城市文本列表
   ========================================================================== */
.nodes-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.node-schematic-box {
  background: #0d0c18;
  border: 2px solid var(--border-yellow);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}

.schematic-disclaimer {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--color-yellow);
  background: rgba(248, 218, 99, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  border-left: 3px solid var(--border-yellow);
}

.cities-list-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.city-group {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.city-group-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-mint);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.city-tags-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.city-pill {
  font-size: 0.85rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.city-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-yellow);
}

/* ==========================================================================
   AI 与 视频应用场景
   ========================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.scenario-card {
  background: var(--bg-card);
  border: 2px solid rgba(119, 224, 206, 0.3);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.scenario-card:hover {
  border-color: var(--color-mint);
  box-shadow: var(--shadow-neon-mint);
}

.scenario-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.scenario-header-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(119, 224, 206, 0.15);
  border: 1px solid var(--color-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-mint);
  flex-shrink: 0;
}

.scenario-title {
  font-size: 1.3rem;
  font-weight: 800;
}

.scenario-services-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-badge {
  font-size: 0.85rem;
  padding: 6px 12px;
  background: #111020;
  border: 1px solid rgba(248, 218, 99, 0.3);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-weight: 500;
  white-space: nowrap;
}

/* ==========================================================================
   套餐比较区（4–5档套餐）
   ========================================================================== */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.plan-card {
  background: var(--bg-card);
  border: 2px solid rgba(248, 218, 99, 0.3);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.plan-card.featured {
  border-color: var(--color-yellow);
  box-shadow: var(--shadow-neon-yellow);
  transform: scale(1.03);
  background: linear-gradient(180deg, #201e3d 0%, #18172e 100%);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-yellow);
  color: #111020;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}

.plan-top {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.plan-price-box {
  margin: 12px 0 18px;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.15);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.plan-price-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-yellow);
}

.plan-price-num {
  font-size: 2.35rem;
  font-weight: 900;
  color: var(--color-yellow);
  line-height: 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace, sans-serif;
  letter-spacing: -0.5px;
}

.plan-price-decimal {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-yellow);
}

.plan-price-cycle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.plan-price-subtext {
  font-size: 0.78rem;
  color: var(--color-mint);
  background: rgba(119, 224, 206, 0.1);
  border: 1px solid rgba(119, 224, 206, 0.25);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  align-self: flex-start;
  white-space: nowrap;
}

.plan-card.featured .plan-price-currency,
.plan-card.featured .plan-price-num,
.plan-card.featured .plan-price-decimal {
  color: #FFE885;
  text-shadow: 0 0 12px rgba(248, 218, 99, 0.35);
}

.plan-card.featured .plan-price-subtext {
  color: #111020;
  background: var(--color-yellow);
  border-color: var(--color-yellow);
  font-weight: 700;
}

.plan-price-state {
  display: inline-block;
  background: rgba(240, 136, 182, 0.15);
  color: var(--color-pink);
  border: 1px solid var(--color-pink);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.plan-feature-item {
  font-size: 0.9rem;
  color: var(--text-sub);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-mint);
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-cta-wrap {
  margin-top: auto;
}

.plan-cta-wrap .btn-arcade {
  width: 100%;
}

.plans-disclaimer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 28px;
}

/* ==========================================================================
   9篇文章图卡（攻略杂志）：桌面3列、平板2列、手机1列
   ========================================================================== */
.articles-magazine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.article-card {
  background: linear-gradient(180deg, #191730 0%, #111020 100%);
  border: 1px solid rgba(248, 218, 99, 0.24);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-yellow) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 3;
}

.article-card:hover {
  border-color: var(--color-yellow);
  transform: translateY(-8px);
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.7), 0 0 25px rgba(248, 218, 99, 0.25);
}

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

.article-card-thumb {
  height: 185px;
  background: radial-gradient(circle at 50% 40%, #252246 0%, #0d0c18 90%);
  border-bottom: 1px solid rgba(248, 218, 99, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  position: relative;
  overflow: hidden;
}

.article-card-thumb::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(248, 218, 99, 0.12) 0%, transparent 70%);
  pointer-events: none;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.article-card:hover .article-card-thumb::before {
  transform: translate(-50%, -50%) scale(1.35);
  opacity: 1;
}

.thumb-svg-wrap {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

.thumb-svg-wrap svg {
  width: 100%;
  max-height: 140px;
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.6));
}

.article-card:hover .thumb-svg-wrap {
  transform: scale(1.05);
}

.article-category-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(17, 16, 32, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-mint);
  border: 1px solid rgba(119, 224, 206, 0.4);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.article-category-badge .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-mint);
  box-shadow: 0 0 6px var(--color-mint);
}

.article-edition-pill {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(248, 218, 99, 0.12);
  color: var(--color-yellow);
  border: 1px solid rgba(248, 218, 99, 0.32);
  white-space: nowrap;
  z-index: 2;
}

.article-card-body {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 12px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.76rem;
}

.article-meta-tag {
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.article-meta-chip {
  color: var(--color-pink);
  background: rgba(240, 136, 182, 0.12);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(240, 136, 182, 0.28);
  font-weight: 600;
}

.article-card-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.45;
  transition: color var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card:hover .article-card-title {
  color: var(--color-yellow);
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: #C5CAD6;
  line-height: 1.65;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: auto;
}

.article-read-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

.article-card-link-text {
  color: var(--color-yellow);
  font-weight: 700;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  transition: transform 0.2s ease, color 0.2s ease;
}

.article-card-link-text svg {
  transition: transform 0.2s ease;
}

.article-card:hover .article-card-link-text svg {
  transform: translateX(4px);
}

/* ==========================================================================
   演示评价区（标注占位）
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid rgba(240, 136, 182, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}

.review-placeholder-tag {
  align-self: flex-start;
  font-size: 0.72rem;
  background: rgba(240, 136, 182, 0.15);
  color: var(--color-pink);
  border: 1px solid var(--color-pink);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  white-space: nowrap;
}

.review-content {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.65;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
}

.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #111020;
  border: 1px solid var(--color-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--color-yellow);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.review-author-meta {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

.review-role {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ==========================================================================
   FAQ 折叠手风琴区
   ========================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 2px solid rgba(248, 218, 99, 0.25);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-yellow);
}

.faq-summary {
  padding: 18px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
  color: var(--color-yellow);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.7;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  padding-top: 16px;
}

/* ==========================================================================
   页尾 Footer
   ========================================================================== */
.site-footer {
  background: #0b0a15;
  border-top: 3px solid var(--border-yellow);
  padding: 60px 0 30px;
  margin-top: 60px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-yellow);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  font-size: 0.9rem;
  color: var(--text-sub);
}

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

.external-partner-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(248, 218, 99, 0.08);
  border: 1px solid rgba(248, 218, 99, 0.2);
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  font-size: 0.88rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.external-partner-badge:hover {
  border-color: var(--color-yellow);
  color: var(--color-yellow);
  background: rgba(248, 218, 99, 0.15);
}

.footer-disclaimer-box {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-bottom-copy {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   响应式断点控制
   ========================================================================== */
@media (max-width: 1080px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #141327;
    border-bottom: 2px solid var(--border-yellow);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    padding: 24px 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    z-index: 99;
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    white-space: normal;
  }

  .nav-link {
    padding: 12px;
    font-size: 1.05rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .header-cta-group {
    display: none;
  }

  .main-nav .nav-cta-mobile {
    display: block;
    margin-top: 10px;
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nodes-layout {
    grid-template-columns: 1fr;
  }

  .plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-magazine-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

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

  .plan-card.featured {
    transform: none;
  }

  .articles-magazine-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 430px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .btn-arcade {
    width: 100%;
  }

  .hero-cta-box {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ==========================================================================
   无障碍与动画减弱处理 (prefers-reduced-motion)
   ========================================================================== */
@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;
  }
}