@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Poppins:wght@400;500;600;700&display=swap');

:root {
  --bg-deep: #060913;
  --bg-card: rgba(15, 23, 42, 0.58);
  --bg-card-hover: rgba(22, 33, 62, 0.78);
  --aurora-violet: #7c3aed;
  --aurora-cyan: #06b6d4;
  --aurora-magenta: #db2777;
  --aurora-emerald: #10b981;
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-glass: rgba(148, 163, 184, 0.16);
  --border-bright: rgba(6, 182, 212, 0.55);
  --font-sans: 'Outfit', 'Poppins', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 暗夜极光巨型渐变光团 */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.42;
  will-change: transform, border-radius;
}

.aurora-blob.blob-violet {
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, #7c3aed 0%, rgba(124, 58, 237, 0.15) 70%, transparent 100%);
  top: -140px;
  left: -120px;
  animation: auroraMorphOne 22s ease-in-out infinite alternate;
}

.aurora-blob.blob-cyan {
  width: 580px;
  height: 580px;
  background: radial-gradient(circle, #06b6d4 0%, rgba(6, 182, 212, 0.15) 70%, transparent 100%);
  top: 22%;
  right: -130px;
  animation: auroraMorphTwo 26s ease-in-out infinite alternate;
}

.aurora-blob.blob-magenta {
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, #db2777 0%, rgba(219, 39, 119, 0.12) 70%, transparent 100%);
  bottom: -150px;
  left: 24%;
  animation: auroraMorphThree 24s ease-in-out infinite alternate;
}

@keyframes auroraMorphOne {
  0% {
    transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
    border-radius: 48% 52% 55% 45%;
  }
  50% {
    transform: translate3d(110px, 80px, 0) scale(1.16) rotate(25deg);
    border-radius: 58% 42% 46% 54%;
  }
  100% {
    transform: translate3d(-50px, 140px, 0) scale(0.94) rotate(-18deg);
    border-radius: 43% 57% 60% 40%;
  }
}

@keyframes auroraMorphTwo {
  0% {
    transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
    border-radius: 52% 48% 44% 56%;
  }
  50% {
    transform: translate3d(-120px, -70px, 0) scale(1.14) rotate(-30deg);
    border-radius: 42% 58% 54% 46%;
  }
  100% {
    transform: translate3d(-60px, 110px, 0) scale(0.92) rotate(22deg);
    border-radius: 56% 44% 48% 52%;
  }
}

@keyframes auroraMorphThree {
  0% {
    transform: translate3d(0, 0, 0) scale(1) rotate(0deg);
    border-radius: 45% 55% 52% 48%;
  }
  50% {
    transform: translate3d(90px, -95px, 0) scale(1.18) rotate(18deg);
    border-radius: 57% 43% 45% 55%;
  }
  100% {
    transform: translate3d(-100px, -40px, 0) scale(0.95) rotate(-24deg);
    border-radius: 49% 51% 59% 41%;
  }
}

/* 粒子画布与互动追光 */
#aurora-particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.cursor-spotlight {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(
    650px circle at var(--cursor-x, 50vw) var(--cursor-y, 35vh),
    rgba(6, 182, 212, 0.11),
    rgba(124, 58, 237, 0.07) 38%,
    transparent 72%
  );
  transition: opacity 0.3s ease;
}

.page-wrapper {
  position: relative;
  z-index: 3;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 毛玻璃半透明导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 19, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 18px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.45rem;
  letter-spacing: 0.03em;
}

.brand-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--aurora-violet), var(--aurora-cyan), var(--aurora-magenta));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(6, 182, 212, 0.45);
  font-size: 1.15rem;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 500;
  transition: color 0.25s ease, text-shadow 0.25s ease;
  padding: 6px 4px;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
  text-shadow: 0 0 14px rgba(6, 182, 212, 0.75);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--aurora-violet), var(--aurora-cyan));
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 6px 22px rgba(6, 182, 212, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(124, 58, 237, 0.52);
}

/* 首屏极光区 */
.hero-section {
  padding: 88px 0 58px;
  text-align: center;
  position: relative;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.76);
  border: 1px solid rgba(16, 185, 129, 0.38);
  color: #a7f3d0;
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 28px;
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.16);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--aurora-emerald);
  box-shadow: 0 0 12px var(--aurora-emerald);
  animation: pulseGlow 1.8s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.38);
    opacity: 0.55;
  }
}

.hero-title {
  font-size: clamp(2.25rem, 4.8vw, 3.85rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 22px;
  background: linear-gradient(120deg, #ffffff 0%, #67e8f9 28%, #c084fc 58%, #f472b6 82%, #ffffff 100%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: auroraTextFlow 7s linear infinite;
}

@keyframes auroraTextFlow {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 220% center;
  }
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2.2vw, 1.42rem);
  color: #e2e8f0;
  font-weight: 600;
  max-width: 860px;
  margin: 0 auto 16px;
}

.hero-desc {
  font-size: 1.04rem;
  color: var(--text-secondary);
  max-width: 820px;
  margin: 0 auto 38px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}

.btn-magnetic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 38px;
  border-radius: 999px;
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  background: linear-gradient(135deg, var(--aurora-violet) 0%, var(--aurora-cyan) 52%, var(--aurora-magenta) 100%);
  background-size: 180% 180%;
  box-shadow: 0 12px 34px rgba(6, 182, 212, 0.38), 0 0 0 1px rgba(255, 255, 255, 0.24) inset;
  transition: transform 0.18s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease;
  will-change: transform;
}

.btn-magnetic:hover {
  box-shadow: 0 16px 42px rgba(219, 39, 119, 0.45), 0 0 28px rgba(6, 182, 212, 0.55);
}

.btn-blog-weight {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 34px;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #f8fafc;
  text-decoration: none;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(6, 182, 212, 0.55);
  box-shadow: 0 8px 26px rgba(124, 58, 237, 0.22);
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.btn-blog-weight:hover {
  transform: translateY(-3px);
  background: rgba(30, 41, 59, 0.92);
  border-color: var(--aurora-magenta);
  box-shadow: 0 12px 32px rgba(6, 182, 212, 0.38);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 980px;
  margin: 0 auto;
}

.metric-box {
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 20px 16px;
  backdrop-filter: blur(12px);
}

.metric-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: #67e8f9;
  display: block;
}

.metric-label {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* 全球节点动态横条 */
.node-ticker-section {
  margin: 22px 0 64px;
  padding: 18px 0;
  background: rgba(11, 17, 34, 0.82);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  backdrop-filter: blur(14px);
}

.node-ticker-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.node-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  border-radius: 999px;
  background: rgba(20, 30, 55, 0.78);
  border: 1px solid rgba(6, 182, 212, 0.28);
  font-size: 0.93rem;
  color: #e2e8f0;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.node-chip:hover {
  border-color: var(--aurora-cyan);
  transform: translateY(-2px);
}

.node-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

.node-latency {
  color: #67e8f9;
  font-weight: 700;
}

/* 通用区块标题 */
.section-block {
  padding: 72px 0;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.18);
  border: 1px solid rgba(124, 58, 237, 0.45);
  color: #d8b4fe;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.02rem;
}

/* 追光玻璃卡片系统 */
.spotlight-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 22px;
  padding: 32px 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    420px circle at var(--card-mouse-x, -999px) var(--card-mouse-y, -999px),
    rgba(6, 182, 212, 0.22),
    rgba(219, 39, 119, 0.1) 45%,
    transparent 75%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.spotlight-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
  box-shadow: 0 18px 44px rgba(6, 9, 19, 0.72), 0 0 28px rgba(6, 182, 212, 0.18);
}

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

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

.card-icon-wrap {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(6, 182, 212, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 8px 22px rgba(124, 58, 237, 0.24);
}

.card-icon-wrap img {
  width: 42px;
  height: 42px;
  display: block;
}

.card-title {
  font-size: 1.32rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.97rem;
  line-height: 1.8;
}

/* 流媒体与人工智能4图卡 */
.media-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.media-badge {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(6, 182, 212, 0.16);
  border: 1px solid rgba(6, 182, 212, 0.42);
  color: #67e8f9;
}

/* 套餐价格对比区 */
.pricing-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card.featured {
  border-color: rgba(219, 39, 119, 0.65);
  background: linear-gradient(180deg, rgba(30, 27, 75, 0.78) 0%, rgba(15, 23, 42, 0.85) 100%);
  box-shadow: 0 20px 50px rgba(124, 58, 237, 0.32);
}

.popular-ribbon {
  display: inline-block;
  align-self: flex-start;
  padding: 5px 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--aurora-violet), var(--aurora-magenta));
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-price {
  font-size: 2.65rem;
  font-weight: 800;
  color: #67e8f9;
  line-height: 1.15;
  margin-bottom: 22px;
}

.plan-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
}

.plan-features li {
  padding: 9px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  color: var(--text-secondary);
  font-size: 0.96rem;
}

.plan-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 14px 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--aurora-violet), var(--aurora-cyan));
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.plan-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(6, 182, 212, 0.42);
}

/* 套餐参数对比大表 */
.table-wrap {
  overflow-x: auto;
  background: rgba(15, 23, 42, 0.68);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  backdrop-filter: blur(16px);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.comparison-table th {
  background: rgba(30, 41, 59, 0.75);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
}

.comparison-table td {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.comparison-table tr:hover td {
  background: rgba(6, 182, 212, 0.06);
}

.table-cta-link {
  display: inline-block;
  padding: 7px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--aurora-violet), var(--aurora-cyan));
  color: #ffffff;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
}

/* 用户评价与常见问题 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.review-author {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  font-weight: 700;
  color: #ffffff;
  font-size: 0.96rem;
}

.review-role {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.faq-item {
  background: rgba(15, 23, 42, 0.64);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 24px 28px;
  backdrop-filter: blur(14px);
}

.faq-question {
  font-size: 1.14rem;
  font-weight: 700;
  color: #67e8f9;
  margin-bottom: 10px;
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 0.97rem;
}

/* 滚动浮现动画 */
.reveal-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 文章页与子页面排版 */
.subpage-hero {
  padding: 64px 0 36px;
  text-align: center;
  border-bottom: 1px solid var(--border-glass);
}

.article-container {
  max-width: 920px;
  margin: 48px auto 80px;
  padding: 42px 40px;
  background: rgba(15, 23, 42, 0.68);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  backdrop-filter: blur(18px);
}

.article-container h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #67e8f9;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(6, 182, 212, 0.25);
}

.article-container h3 {
  font-size: 1.24rem;
  font-weight: 700;
  color: #f472b6;
  margin: 26px 0 12px;
}

.article-container p {
  color: var(--text-secondary);
  font-size: 1.03rem;
  line-height: 1.92;
  margin-bottom: 18px;
  text-align: justify;
}

.article-container ul,
.article-container ol {
  margin: 0 0 22px 24px;
  color: var(--text-secondary);
}

.article-container li {
  margin-bottom: 10px;
  line-height: 1.85;
}

.article-container a {
  color: #67e8f9;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 14px;
}

.article-cta-banner {
  margin: 38px 0;
  padding: 30px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.26), rgba(6, 182, 212, 0.22));
  border: 1px solid rgba(6, 182, 212, 0.45);
  text-align: center;
}

/* 页脚严格只保留四个导航标题 */
.site-footer {
  margin-top: 72px;
  padding: 48px 0 38px;
  background: rgba(4, 7, 15, 0.88);
  border-top: 1px solid var(--border-glass);
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  transition: color 0.25s ease;
}

.footer-nav a:hover {
  color: #67e8f9;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 响应式适配 */
@media (max-width: 992px) {
  .feature-grid-3,
  .pricing-grid-3,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .media-grid-4,
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-bar {
    flex-direction: column;
    padding: 14px 0;
  }
  .nav-links {
    justify-content: center;
    gap: 14px;
  }
  .hero-section {
    padding: 54px 0 38px;
  }
  .media-grid-4,
  .hero-metrics {
    grid-template-columns: 1fr;
  }
  .btn-magnetic,
  .btn-blog-weight {
    width: 100%;
    padding: 15px 22px;
  }
  .article-container {
    padding: 26px 18px;
    margin: 28px auto 54px;
  }
}