/* ==========================================================================
   Typographic Poster Swiss Design System - 黑黄双色对撞海报样式库
   Theme Colors: High-saturation Bright Yellow (#FFDE00) + Charcoal Black (#0A0A0A)
   ========================================================================== */

:root {
  --color-yellow: #FFDE00;
  --color-black: #0A0A0A;
  --color-black-light: #141414;
  --color-black-card: #181818;
  --color-gray-border: #282828;
  --color-gray-muted: #8E8E93;
  --color-white: #FFFFFF;
  --color-green: #00FF66;
  --color-red: #FF3B30;
  --font-display: 'Impact', 'Syne', 'Montserrat', 'Arial Black', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --border-thick: 3px solid var(--color-black);
  --border-yellow: 3px solid var(--color-yellow);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-black);
  color: var(--color-white);
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--color-black);
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 动态背景画布 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

/* 页面主要容器 */
.page-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
}

/* 通用容器约束 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 瑞士海报排版标题规范 */
.poster-title-huge {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7.5rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.poster-title-large {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.poster-title-md {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* 黄底黑字标签/胶囊 */
.tag-black-on-yellow {
  display: inline-block;
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  padding: 4px 14px;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  border: 2px solid var(--color-black);
}

.tag-yellow-on-black {
  display: inline-block;
  background-color: var(--color-black);
  color: var(--color-yellow);
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  padding: 4px 14px;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  border: 2px solid var(--color-yellow);
}

/* 顶部公告条（促销轰炸） */
.top-notice-bar {
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  padding: 8px 16px;
  text-align: center;
  border-bottom: 2px solid var(--color-black);
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  overflow: hidden;
}

.top-notice-bar .badge-fire {
  background: var(--color-black);
  color: var(--color-yellow);
  padding: 2px 8px;
  font-size: 0.8rem;
  font-weight: 900;
  display: inline-block;
}

/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid #222;
  transition: all 0.3s ease;
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-badge {
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  padding: 4px 10px;
  border: 2px solid var(--color-yellow);
  line-height: 1;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: -0.03em;
  display: flex;
  flex-direction: column;
}

.logo-sub {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-yellow);
  letter-spacing: 0.15em;
  margin-top: -2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-link {
  color: #ccc;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: color 0.2s ease;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover {
  color: var(--color-yellow);
}

.nav-cta-btn {
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  padding: 10px 24px;
  text-decoration: none;
  border: 2px solid var(--color-yellow);
  text-transform: uppercase;
  transition: transform 0.15s ease, background-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav-cta-btn:hover {
  background-color: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-black);
  transform: translateY(-2px);
}

/* 移动端汉堡按钮 */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-yellow);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   首屏 HERO：占据屏幕 60% 面积的巨大数字 + 双向微倾斜滚动弹幕标语
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 40px 0 60px;
  overflow: hidden;
  border-bottom: 3px solid var(--color-yellow);
}

/* 微倾斜滚动弹幕背景轨道 */
.ticker-wrap-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-3.5deg);
  width: 120vw;
  display: flex;
  flex-direction: column;
  gap: 20px;
  pointer-events: none;
  opacity: 0.22;
  z-index: 1;
}

.ticker-strip {
  white-space: nowrap;
  overflow: hidden;
  display: flex;
  user-select: none;
}

.ticker-strip-yellow {
  background: var(--color-yellow);
  color: var(--color-black);
  padding: 10px 0;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.ticker-strip-black {
  background: #111;
  color: var(--color-white);
  border-top: 2px solid #333;
  border-bottom: 2px solid #333;
  padding: 10px 0;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.ticker-inner {
  display: inline-block;
  white-space: nowrap;
  animation: ticker-slide 30s linear infinite;
}

.ticker-inner-reverse {
  display: inline-block;
  white-space: nowrap;
  animation: ticker-slide-reverse 35s linear infinite;
}

@keyframes ticker-slide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes ticker-slide-reverse {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* 首屏前景海报大字内容 */
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-subtitle-bar {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: var(--color-yellow);
  color: var(--color-black);
  padding: 8px 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 20px;
  text-transform: uppercase;
  border: 3px solid var(--color-black);
  box-shadow: 6px 6px 0px #ffffff;
}

/* 占据屏幕约 60% 面积的超大数字版式 */
.hero-giant-pricing {
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 14vw, 12rem);
  font-weight: 900;
  line-height: 0.85;
  color: var(--color-yellow);
  text-shadow: 
    4px 4px 0px #000,
    -2px -2px 0px #000,
    2px -2px 0px #000,
    -2px 2px 0px #000,
    8px 8px 0px rgba(255, 255, 255, 0.2);
  margin: 15px 0 25px;
  letter-spacing: -0.05em;
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-giant-pricing .price-unit {
  font-size: clamp(2rem, 6vw, 4.5rem);
  color: #fff;
  font-weight: 900;
  margin-right: -10px;
}

.hero-giant-pricing .price-slash {
  font-size: clamp(2rem, 5vw, 4rem);
  color: #888;
  font-weight: 300;
}

.hero-giant-pricing .price-plan {
  font-size: clamp(2rem, 6vw, 4.5rem);
  color: var(--color-white);
  background-color: #0A0A0A;
  padding: 0 10px;
  border: 3px solid var(--color-yellow);
}

.hero-slogan-box {
  background: rgba(10, 10, 10, 0.85);
  border: 2px solid #333;
  padding: 16px 28px;
  display: inline-block;
  margin-bottom: 30px;
}

.hero-slogan-main {
  font-size: clamp(1.2rem, 2.8vw, 2.2rem);
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}

.hero-slogan-main span {
  color: var(--color-yellow);
  background-color: #1a1a1a;
  padding: 2px 8px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-poster-massive {
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 900;
  padding: 18px 48px;
  text-decoration: none;
  text-transform: uppercase;
  border: 4px solid var(--color-white);
  box-shadow: 8px 8px 0px var(--color-white);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
}

.btn-poster-massive:hover {
  transform: translate(-3px, -3px);
  box-shadow: 12px 12px 0px var(--color-white);
  background-color: #FFFFFF;
  color: #000;
}

.btn-poster-outline {
  background-color: transparent;
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  font-weight: 900;
  padding: 18px 36px;
  text-decoration: none;
  text-transform: uppercase;
  border: 3px solid #444;
  transition: all 0.2s ease;
}

.btn-poster-outline:hover {
  border-color: var(--color-yellow);
  color: var(--color-yellow);
  transform: translateY(-2px);
}

.hero-security-badges {
  margin-top: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: #AAA;
}

.hero-security-badges span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-security-badges i {
  color: var(--color-yellow);
}

/* ==========================================================================
   板块通用头部（Section Header）
   ========================================================================== */
.section-wrapper {
  padding: 90px 0;
  position: relative;
  border-bottom: 2px solid #222;
}

.section-wrapper-yellow {
  background-color: var(--color-yellow);
  color: var(--color-black);
  border-bottom: 4px solid var(--color-black);
}

.section-wrapper-yellow .section-badge {
  background: var(--color-black);
  color: var(--color-yellow);
}

.section-wrapper-yellow .section-title {
  color: var(--color-black);
}

.section-header-box {
  margin-bottom: 50px;
}

.section-badge {
  display: inline-block;
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.9rem;
  padding: 4px 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--color-white);
}

.section-desc {
  font-size: 1.15rem;
  color: #999;
  max-width: 780px;
  margin-top: 14px;
}

/* ==========================================================================
   板块 3：节点延迟和状态板块 (Live Status Grid)
   ========================================================================== */
.status-monitor-panel {
  background: #111;
  border: 3px solid #333;
  padding: 30px;
  box-shadow: 10px 10px 0px #000;
}

.status-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #282828;
  padding-bottom: 20px;
  margin-bottom: 25px;
  flex-wrap: wrap;
  gap: 16px;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-green);
}

.pulse-dot {
  width: 12px;
  height: 12px;
  background-color: var(--color-green);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-green);
  animation: pulse-ring 1.8s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
  100% { transform: scale(0.9); opacity: 1; }
}

.btn-refresh-test {
  background: #222;
  color: var(--color-yellow);
  border: 2px solid #444;
  padding: 8px 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-refresh-test:hover {
  background: var(--color-yellow);
  color: #000;
  border-color: var(--color-yellow);
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}

.node-card {
  background: #181818;
  border: 2px solid #282828;
  padding: 20px;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.node-card:hover {
  border-color: var(--color-yellow);
  transform: translateY(-3px);
}

.node-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.node-flag-name {
  display: flex;
  align-items: center;
  gap: 12px;
}

.node-flag {
  font-size: 1.8rem;
  line-height: 1;
}

.node-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
}

.node-tag-type {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: #262626;
  color: var(--color-yellow);
  font-weight: 800;
  border: 1px solid #444;
}

.node-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  background: #101010;
  padding: 12px;
  border: 1px solid #222;
  margin-bottom: 14px;
}

.metric-item {
  text-align: center;
}

.metric-label {
  font-size: 0.75rem;
  color: #777;
  text-transform: uppercase;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-green);
}

.metric-loss {
  color: #fff;
}

.node-features-unlock {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.unlock-badge {
  font-size: 0.75rem;
  padding: 2px 6px;
  background: #242424;
  color: #BBB;
  border-radius: 2px;
}

.unlock-badge.highlight {
  background: #332b00;
  color: var(--color-yellow);
  border: 1px solid rgba(255, 222, 0, 0.4);
  font-weight: 700;
}

/* ==========================================================================
   板块 4：核心优势板块 (Swiss Poster Brutal Grid)
   ========================================================================== */
.features-poster-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-poster-card {
  background: #141414;
  border: 3px solid #282828;
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}

.feature-poster-card:hover {
  border-color: var(--color-yellow);
  box-shadow: 8px 8px 0px var(--color-yellow);
  transform: translate(-3px, -3px);
}

.feature-number {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  color: #222;
  position: absolute;
  top: 20px;
  right: 25px;
  transition: color 0.2s ease;
  user-select: none;
}

.feature-poster-card:hover .feature-number {
  color: var(--color-yellow);
  opacity: 0.35;
}

.feature-card-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-card-desc {
  font-size: 1.05rem;
  color: #999;
  line-height: 1.7;
  position: relative;
  z-index: 2;
}

.feature-highlight-pills {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.feature-pill {
  background: #202020;
  border: 1px solid #333;
  color: var(--color-yellow);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 10px;
}

/* ==========================================================================
   板块 4：套餐价格板块 (15月付、22月付、120年付)
   ========================================================================== */
.pricing-cards-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: #141414;
  border: 3px solid #333;
  padding: 45px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: #666;
}

/* 最畅销/推荐套餐（对撞高亮） */
.pricing-card.featured-card {
  background: #191919;
  border: 4px solid var(--color-yellow);
  box-shadow: 12px 12px 0px var(--color-yellow);
  transform: translateY(-10px);
}

.pricing-card.featured-card:hover {
  transform: translateY(-14px);
}

.pricing-ribbon {
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  padding: 4px 20px;
  text-transform: uppercase;
  border: 2px solid var(--color-black);
  box-shadow: 3px 3px 0px #fff;
  white-space: nowrap;
}

.pricing-plan-name {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: #fff;
}

.pricing-plan-sub {
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 25px;
  min-height: 40px;
}

.pricing-amount-row {
  display: flex;
  align-items: baseline;
  margin-bottom: 25px;
  border-bottom: 2px dashed #333;
  padding-bottom: 20px;
}

.price-currency {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-yellow);
}

.price-number {
  font-family: var(--font-display);
  font-size: 4.8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-yellow);
  letter-spacing: -0.04em;
  margin: 0 4px;
}

.price-cycle {
  font-size: 1.1rem;
  font-weight: 700;
  color: #888;
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 35px;
  flex-grow: 1;
}

.pricing-features-list li {
  padding: 10px 0;
  border-bottom: 1px solid #222;
  font-size: 0.95rem;
  color: #CCC;
  display: flex;
  align-items: center;
  gap: 12px;
}

.pricing-features-list li strong {
  color: #fff;
}

.pricing-features-list li .check-icon {
  color: var(--color-yellow);
  font-weight: 900;
  font-size: 1.1rem;
}

.btn-pricing-cta {
  background: #252525;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  padding: 16px;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  border: 2px solid #444;
  transition: all 0.2s ease;
  display: block;
}

.btn-pricing-cta:hover {
  background: #fff;
  color: #000;
  border-color: #fff;
}

.featured-card .btn-pricing-cta {
  background: var(--color-yellow);
  color: var(--color-black);
  border: 2px solid var(--color-yellow);
  box-shadow: 4px 4px 0px #fff;
}

.featured-card .btn-pricing-cta:hover {
  background: #fff;
  color: #000;
  border-color: #fff;
}

/* ==========================================================================
   中部参数对比表格：黑黄两色撞色的宽条幅表格（黑底黄字/黄底黑字交替）
   ========================================================================== */
.comparison-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 4px solid var(--color-yellow);
  box-shadow: 12px 12px 0px #181818;
}

.poster-strip-table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
  font-family: var(--font-body);
}

.poster-strip-table thead tr {
  background-color: var(--color-yellow);
  color: var(--color-black);
  border-bottom: 4px solid var(--color-black);
}

.poster-strip-table th {
  padding: 22px 16px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-right: 3px solid var(--color-black);
}

.poster-strip-table th:last-child {
  border-right: none;
}

.poster-strip-table th.col-highlight {
  background-color: #000000;
  color: var(--color-yellow);
  font-size: 1.5rem;
}

/* 交替条幅：黑底黄字 / 黄底黑字交替 */
.poster-strip-table tbody tr.row-black {
  background-color: #0A0A0A;
  color: var(--color-yellow);
  border-bottom: 3px solid #222;
}

.poster-strip-table tbody tr.row-yellow {
  background-color: var(--color-yellow);
  color: var(--color-black);
  border-bottom: 3px solid #000;
}

.poster-strip-table td {
  padding: 20px 16px;
  font-size: 1.05rem;
  font-weight: 700;
  border-right: 2px solid rgba(255, 255, 255, 0.15);
}

.poster-strip-table tbody tr.row-yellow td {
  border-right: 2px solid rgba(0, 0, 0, 0.25);
}

.poster-strip-table td:last-child {
  border-right: none;
}

.poster-strip-table td.cell-label {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  text-align: left;
  padding-left: 24px;
}

.poster-strip-table td.cell-highlight {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
}

.row-black td.cell-highlight {
  color: var(--color-yellow);
  background-color: rgba(255, 222, 0, 0.08);
}

.row-yellow td.cell-highlight {
  color: #000;
  background-color: rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   板块 5：常见问题板块 (Accordion FAQ)
   ========================================================================== */
.faq-accordion-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #141414;
  border: 2px solid #333;
  transition: border-color 0.2s ease;
}

.faq-item.active {
  border-color: var(--color-yellow);
  box-shadow: 6px 6px 0px var(--color-yellow);
}

.faq-question-btn {
  width: 100%;
  padding: 24px 28px;
  background: none;
  border: none;
  text-align: left;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 16px;
}

.faq-question-btn:hover {
  color: var(--color-yellow);
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-yellow);
  transition: transform 0.25s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease;
  padding: 0 28px;
  color: #BBB;
  font-size: 1.05rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 350px;
  padding: 0 28px 24px 28px;
  border-top: 1px dashed #333;
  margin-top: 4px;
  padding-top: 16px;
}

/* ==========================================================================
   板块 5：知识库与教程板块 (8-12 独立页面矩阵)
   ========================================================================== */
.articles-poster-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: #141414;
  border: 2px solid #2e2e2e;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
  position: relative;
}

.article-card:hover {
  border-color: var(--color-yellow);
  box-shadow: 6px 6px 0px var(--color-yellow);
  transform: translate(-3px, -3px);
}

.article-card-badge {
  font-size: 0.75rem;
  font-weight: 800;
  background: #242424;
  color: var(--color-yellow);
  padding: 3px 8px;
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.article-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 14px;
}

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

.article-card-snippet {
  font-size: 0.92rem;
  color: #999;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #242424;
  padding-top: 14px;
  font-size: 0.85rem;
  color: #777;
}

.article-read-more {
  color: var(--color-yellow);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   板块 6：用户评价板块 (Customer Reviews)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-poster-card {
  background: #141414;
  border: 2px solid #333;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.review-stars {
  color: var(--color-yellow);
  font-size: 1.2rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-quote {
  font-size: 1.05rem;
  font-weight: 600;
  color: #DDD;
  line-height: 1.7;
  margin-bottom: 24px;
}

.review-author-info {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #282828;
  padding-top: 16px;
}

.author-avatar-box {
  width: 44px;
  height: 44px;
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #000;
}

.author-name {
  font-weight: 800;
  color: #fff;
  font-size: 1rem;
}

.author-tag {
  font-size: 0.8rem;
  color: var(--color-yellow);
}

/* ==========================================================================
   板块：底部悬浮固定全宽结算条 (Sticky Bottom Checkout Bar)
   ========================================================================== */
.sticky-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #0A0A0A;
  border-top: 4px solid var(--color-yellow);
  padding: 12px 24px;
  z-index: 999;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.8);
}

.sticky-bottom-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.countdown-box {
  display: flex;
  align-items: center;
  gap: 16px;
}

.countdown-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.countdown-title span {
  color: var(--color-yellow);
}

.timer-digits {
  display: flex;
  align-items: center;
  gap: 6px;
}

.timer-flip {
  background: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 900;
  padding: 4px 10px;
  border: 2px solid #fff;
  min-width: 44px;
  text-align: center;
}

.timer-separator {
  color: var(--color-yellow);
  font-weight: 900;
  font-size: 1.3rem;
}

.sticky-cta-btn {
  background-color: var(--color-yellow);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 900;
  padding: 14px 44px;
  text-decoration: none;
  text-transform: uppercase;
  border: 3px solid #FFFFFF;
  box-shadow: 5px 5px 0px #FFFFFF;
  transition: all 0.2s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.sticky-cta-btn:hover {
  background-color: #FFFFFF;
  color: #000;
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0px #FFFFFF;
}

/* 页脚 */
.site-footer {
  background: #050505;
  border-top: 2px solid #222;
  padding: 60px 0 120px; /* 留出底部结算条空间 */
  color: #666;
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

/* ==========================================================================
   独立文章页面通用样式 (Article Detail Template)
   ========================================================================== */
.article-page-header {
  padding: 60px 0 40px;
  border-bottom: 3px solid var(--color-yellow);
  background: #111;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 20px;
}

.article-breadcrumbs a {
  color: var(--color-yellow);
  text-decoration: none;
  font-weight: 700;
}

.article-main-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: #aaa;
  flex-wrap: wrap;
}

.article-content-body {
  padding: 60px 0 100px;
  max-width: 960px;
  margin: 0 auto;
}

.article-content-body h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-yellow);
  margin: 40px 0 20px;
  border-left: 6px solid var(--color-yellow);
  padding-left: 14px;
}

.article-content-body h3 {
  font-size: 1.4rem;
  color: #fff;
  margin: 30px 0 15px;
}

.article-content-body p {
  font-size: 1.1rem;
  line-height: 1.85;
  color: #D6D6D6;
  margin-bottom: 22px;
}

.article-content-body ul, .article-content-body ol {
  margin: 20px 0 25px 30px;
  color: #CCC;
}

.article-content-body li {
  font-size: 1.05rem;
  margin-bottom: 12px;
  line-height: 1.7;
}

.article-callout-box {
  background: #181818;
  border: 2px solid var(--color-yellow);
  padding: 24px;
  margin: 30px 0;
  box-shadow: 6px 6px 0px rgba(255, 222, 0, 0.2);
}

.article-callout-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-yellow);
  margin-bottom: 10px;
}

.article-inline-cta {
  background: var(--color-yellow);
  color: var(--color-black);
  padding: 30px;
  margin: 50px 0;
  text-align: center;
  border: 4px solid #fff;
  box-shadow: 8px 8px 0px #fff;
}

.article-inline-cta h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: #000;
  margin-bottom: 10px;
}

.article-inline-cta p {
  color: #111;
  font-weight: 700;
  margin-bottom: 20px;
}

/* ==========================================================================
   响应式断点适配
   ========================================================================== */
@media (max-width: 1024px) {
  .features-poster-grid,
  .pricing-cards-container,
  .articles-poster-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured-card {
    transform: none;
  }
}

@media (max-width: 768px) {
  .features-poster-grid,
  .pricing-cards-container,
  .articles-poster-grid,
  .reviews-grid,
  .nodes-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #0A0A0A;
    flex-direction: column;
    padding: 24px;
    border-bottom: 2px solid var(--color-yellow);
    gap: 16px;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: block;
  }

  .sticky-bottom-inner {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .sticky-cta-btn {
    width: 100%;
    justify-content: center;
  }
}