/* ===================================================================
   极速cloud (ijisuyun.lol) - 水之呼吸/浮世绘浪涌/深渊巨鲸设计系统 (Oceanic Zen)
   视觉基调：深渊曜蓝海域 + 水之呼吸翠青 + 浪涌极光碧蓝 + 珍珠泡沫白 + 流体声呐微交互
   =================================================================== */

:root {
  --bg-abyss: #020b1c;
  --bg-surface: #061533;
  --bg-card: #0a1e45;
  --bg-card-hover: #0e2759;
  --bg-subtle: #122f68;

  --brand-aqua: #00f5d4;
  --brand-aqua-glow: rgba(0, 245, 212, 0.35);
  --brand-cyan: #00b4d8;
  --brand-cyan-glow: rgba(0, 180, 216, 0.3);
  --brand-cobalt: #1d4ed8;
  --brand-foam: #e0f2fe;
  --brand-emerald: #06d6a0;

  --text-main: #f0fdfa;
  --text-muted: #cbd5e1;
  --text-dim: #94a3b8;
  --text-light: #64748b;

  --border-ocean: rgba(0, 180, 216, 0.25);
  --border-ocean-hover: rgba(0, 245, 212, 0.6);
  --border-subtle: rgba(255, 255, 255, 0.08);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-ocean: 0 14px 40px -10px rgba(0, 180, 216, 0.2), 0 0 20px rgba(0, 245, 212, 0.08);
  --shadow-glow: 0 0 30px rgba(0, 245, 212, 0.4);

  --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --container-max: 1180px;
  --header-height: 74px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-abyss);
  color: var(--text-main);
  font-family: var(--font-system);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-abyss);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 245, 212, 0.1) 0%, transparent 60%),
    radial-gradient(circle at 100% 50%, rgba(29, 78, 216, 0.12) 0%, transparent 50%);
  background-repeat: no-repeat;
}

.layout-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===================================================================
   水之呼吸导航栏 (Oceanic Header)
   =================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(2, 11, 28, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-ocean);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.site-logo__icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #00f5d4 0%, #00b4d8 50%, #1d4ed8 100%);
  border: 1.5px solid rgba(224, 242, 254, 0.8);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  box-shadow: 0 0 16px var(--brand-aqua-glow);
}

.site-logo__text {
  display: flex;
  flex-direction: column;
}

.site-logo__brand {
  font-size: 1.3rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-logo__tagline {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--brand-aqua);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav__link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 600;
  transition: color 0.2s ease, text-shadow 0.2s ease;
  position: relative;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: #ffffff;
  text-shadow: 0 0 10px var(--brand-aqua-glow);
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  font-size: 0.9rem;
  font-weight: 750;
  color: #020b1c;
  background: linear-gradient(135deg, #00f5d4 0%, #00b4d8 100%);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-full);
  text-decoration: none;
  box-shadow: 0 0 18px var(--brand-aqua-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.site-nav__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0, 245, 212, 0.6);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-ocean);
  color: var(--text-main);
  font-size: 1.4rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ===================================================================
   浮世绘深渊首屏 (Hero Abyssal Wave)
   =================================================================== */

.hero-ocean {
  padding: 72px 0 88px;
  position: relative;
}

.hero-ocean__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-wave {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 245, 212, 0.1);
  border: 1px solid rgba(0, 245, 212, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  color: #a7f3d0;
  margin-bottom: 22px;
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.15);
}

.hero-ocean__title {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 20px;
}

.hero-ocean__title span {
  background: linear-gradient(135deg, #00f5d4 0%, #00b4d8 60%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-ocean__desc {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 34px;
}

.hero-ocean__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 750;
  padding: 13px 30px;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn--primary {
  background: linear-gradient(135deg, #00f5d4 0%, #00b4d8 100%);
  color: #020b1c;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 24px var(--brand-aqua-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 245, 212, 0.55);
}

.btn--secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-ocean);
}

.btn--secondary:hover {
  background: var(--bg-card);
  border-color: var(--border-ocean-hover);
}

.hero-ocean__stats {
  display: flex;
  gap: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-ocean);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-item__val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--brand-aqua);
}

.hero-stat-item__label {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ===================================================================
   声呐雷达探测仪组件 (Sonar Radar Sweep HUD)
   =================================================================== */

.sonar-hud {
  background: var(--bg-surface);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-ocean);
  position: relative;
  overflow: hidden;
}

.sonar-hud::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #00f5d4, #00b4d8, transparent);
}

.sonar-hud__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-ocean);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.sonar-hud__title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sonar-hud__status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-aqua);
  background: rgba(0, 245, 212, 0.12);
  border: 1px solid rgba(0, 245, 212, 0.3);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

/* 雷达圆盘视觉 */
.radar-dish-wrap {
  width: 220px;
  height: 220px;
  margin: 0 auto 20px;
  position: relative;
  border-radius: 50%;
  border: 1.5px solid rgba(0, 245, 212, 0.3);
  background: radial-gradient(circle, rgba(0, 180, 216, 0.12) 0%, rgba(6, 21, 51, 0.9) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar-dish-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(0, 245, 212, 0.2);
}

.radar-dish-ring--1 { width: 70px; height: 70px; }
.radar-dish-ring--2 { width: 140px; height: 140px; }

.radar-crosshair-h {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: rgba(0, 245, 212, 0.2);
}

.radar-crosshair-v {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
  background: rgba(0, 245, 212, 0.2);
}

/* 旋转扫描光束 */
.radar-sweep-beam {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(0, 245, 212, 0.45) 0deg, transparent 60deg, transparent 360deg);
  animation: radar-spin 3.5s linear infinite;
}

@keyframes radar-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 雷达节点亮点 (Blips) */
.radar-blip {
  position: absolute;
  width: 7px;
  height: 7px;
  background-color: var(--brand-aqua);
  border-radius: 50%;
  box-shadow: 0 0 8px #00f5d4;
  animation: blip-pulse 1.8s infinite;
}

.radar-blip--tokyo { top: 38%; left: 68%; }
.radar-blip--hk { top: 62%; left: 55%; }
.radar-blip--sg { top: 75%; left: 42%; }
.radar-blip--la { top: 32%; left: 82%; }

@keyframes blip-pulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 12px #00f5d4; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* 雷达遥测列表 */
.sonar-node-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.sonar-node-item {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sonar-node-name {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 600;
}

.sonar-node-ping {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--brand-aqua);
}

/* ===================================================================
   主内容通用模块
   =================================================================== */

.section {
  padding: 76px 0;
}

.section--alt {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-ocean);
  border-bottom: 1px solid var(--border-ocean);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 54px;
}

.section-head__badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  color: var(--brand-aqua);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}

.section-head__title {
  font-size: 2.2rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 14px;
}

.section-head__desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* 水之呼吸特性网格 (Oceanic Bento Grid) */
.ocean-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

@media (max-width: 1024px) {
  .ocean-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .ocean-grid {
    grid-template-columns: 1fr;
  }
}

.ocean-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-ocean);
}

.ocean-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-ocean-hover);
  box-shadow: var(--shadow-glow);
}

.ocean-card__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--brand-cyan);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.ocean-card__icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: inline-block;
}

.ocean-card__title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.ocean-card__desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   服务生态矩阵 (Oceanic Ecosystem)
   =================================================================== */

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

@media (max-width: 900px) {
  .matrix-grid {
    grid-template-columns: 1fr;
  }
}

.matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 26px;
}

.matrix-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-ocean);
}

.matrix-card__icon {
  font-size: 1.8rem;
}

.matrix-card__title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
}

.matrix-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.matrix-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.92rem;
}

.matrix-item__name {
  color: var(--text-main);
  font-weight: 600;
}

.matrix-item__badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--brand-aqua);
  background: rgba(0, 245, 212, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 245, 212, 0.25);
}

/* ===================================================================
   套餐潮汐定价区 (Deep Ocean Pricing)
   =================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

@media (max-width: 992px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-lg);
  padding: 38px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease;
  box-shadow: var(--shadow-ocean);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-ocean-hover);
}

.pricing-card--popular {
  background: linear-gradient(180deg, rgba(0, 245, 212, 0.12) 0%, var(--bg-card) 45%);
  border: 2px solid var(--brand-aqua);
  box-shadow: 0 14px 40px rgba(0, 245, 212, 0.25);
}

.pricing-card__badge {
  position: absolute;
  top: 16px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  color: #020b1c;
  background: var(--brand-aqua);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 0 12px var(--brand-aqua-glow);
}

.pricing-card__level {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 750;
  color: var(--brand-cyan);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.pricing-card__title {
  font-size: 1.45rem;
  font-weight: 850;
  color: #ffffff;
  margin-bottom: 12px;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  margin-bottom: 20px;
}

.pricing-card__curr {
  font-size: 1.4rem;
  font-weight: 750;
  color: var(--brand-aqua);
}

.pricing-card__amount {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.pricing-card__period {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-left: 6px;
}

.pricing-card__desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-ocean);
}

.pricing-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 34px;
  flex-grow: 1;
}

.pricing-card__feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--text-main);
}

.pricing-card__check {
  color: var(--brand-aqua);
  font-weight: bold;
}

/* ===================================================================
   常见问题 FAQ (Oceanic Accordion)
   =================================================================== */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 750;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-question:hover {
  color: var(--brand-aqua);
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--brand-aqua);
  transition: transform 0.2s ease;
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   深渊终末行动呼吁 (Final Oceanic CTA)
   =================================================================== */

.final-cta {
  padding: 84px 0;
  text-align: center;
  position: relative;
}

.final-cta__box {
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.12) 0%, rgba(29, 78, 216, 0.15) 100%);
  border: 1px solid rgba(0, 245, 212, 0.35);
  border-radius: var(--radius-lg);
  padding: 56px 32px;
  max-width: 860px;
  margin: 0 auto;
  box-shadow: 0 0 50px rgba(0, 245, 212, 0.2);
}

.final-cta__title {
  font-size: 2.3rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 14px;
}

.final-cta__desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 34px;
}

/* ===================================================================
   页脚与移动端底栏
   =================================================================== */

.site-footer {
  background-color: #010714;
  border-top: 1px solid var(--border-ocean);
  padding: 48px 0 36px;
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.site-footer__nav {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.site-footer__link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-footer__link:hover {
  color: var(--brand-aqua);
}

.site-footer__disclosure {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 16px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.site-footer__copyright {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.mobile-sticky-dock {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: rgba(2, 11, 28, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-ocean);
  z-index: 99;
}

.mobile-sticky-dock__btn {
  width: 100%;
}

@media (max-width: 768px) {
  .hero-ocean__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-ocean__title {
    font-size: 2.15rem;
  }
  .menu-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #020b1c;
    border-bottom: 1px solid var(--border-ocean);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
  }
  .site-nav--open {
    display: flex;
  }
  .site-nav__link {
    width: 100%;
  }
  .mobile-sticky-dock {
    display: block;
  }
  body {
    padding-bottom: 68px;
  }
}

/* ===================================================================
   指南列表、文章双栏与合规页
   =================================================================== */

.breadcrumb-nav {
  padding: 24px 0 16px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.breadcrumb-list li+li:before {
  content: "〜";
  margin-right: 8px;
  color: var(--brand-aqua);
}

.breadcrumb-list a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  color: var(--brand-aqua);
}

.page-header {
  padding: 10px 0 36px;
  border-bottom: 1px solid var(--border-ocean);
  margin-bottom: 40px;
}

.page-title {
  font-size: 2.25rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 12px;
}

.page-date {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-dim);
}

.guides-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

@media (max-width: 992px) {
  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-ocean);
}

.guide-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-ocean-hover);
  box-shadow: var(--shadow-glow);
}

.guide-card__badge {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 750;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(0, 245, 212, 0.12);
  border: 1px solid var(--border-ocean);
  color: var(--brand-aqua);
  margin-bottom: 16px;
}

.guide-card__title {
  font-size: 1.25rem;
  font-weight: 850;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 12px;
}

.guide-card__title a {
  color: inherit;
  text-decoration: none;
}

.guide-card__title a:hover {
  color: var(--brand-aqua);
}

.guide-card__desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.guide-card__meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-ocean);
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
}

/* 文章详情页双栏 */
.article-split-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 24px;
  margin-bottom: 60px;
}

@media (max-width: 860px) {
  .article-split-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.article-toc-sticky {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 22px;
}

.article-toc-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

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

.article-toc-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s ease;
}

.article-toc-link:hover {
  color: var(--brand-aqua);
}

.article-content-body {
  font-size: 1.05rem;
  color: var(--text-main);
  line-height: 1.85;
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 40px;
}

@media (max-width: 640px) {
  .article-content-body {
    padding: 24px 18px;
  }
}

.article-takeaways-callout {
  background: rgba(0, 245, 212, 0.08);
  border-left: 4px solid var(--brand-aqua);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin-bottom: 30px;
}

.article-takeaways-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--brand-aqua);
  margin-bottom: 8px;
}

.article-content-body h2 {
  font-size: 1.55rem;
  font-weight: 900;
  color: #ffffff;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-ocean);
}

.article-content-body h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-foam);
  margin: 26px 0 12px;
}

.article-content-body p {
  margin-bottom: 20px;
  color: #cbd5e1;
}

.article-content-body ul, .article-content-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
  color: #cbd5e1;
}

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

.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.94rem;
  background: var(--bg-surface);
}

.article-content-body th, .article-content-body td {
  border: 1px solid var(--border-ocean);
  padding: 12px 16px;
  text-align: left;
}

.article-content-body th {
  background-color: var(--bg-subtle);
  font-weight: 800;
  color: #ffffff;
}

.article-cta-box-dynamic {
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.15) 0%, rgba(29, 78, 216, 0.15) 100%);
  border: 1px solid var(--brand-aqua);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  margin-top: 40px;
}

.article-cta-box-dynamic__title {
  font-size: 1.35rem;
  font-weight: 850;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-box-dynamic__desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}

/* 合规页样式 */
.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 40px;
  margin-bottom: 60px;
}

.legal-card h2 {
  font-size: 1.35rem;
  font-weight: 850;
  color: #ffffff;
  margin: 30px 0 12px;
}

.legal-card p, .legal-card li {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* 网站地图 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-bottom: 60px;
}

.sitemap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ocean);
  border-radius: var(--radius-md);
  padding: 28px;
}

.sitemap-card h2 {
  font-size: 1.25rem;
  font-weight: 850;
  color: var(--brand-aqua);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-ocean);
}

.sitemap-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sitemap-list a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
}

.sitemap-list a:hover {
  color: var(--brand-aqua);
}