/* ============================================================
   ErWanCloud - 暗夜极客赛博专线风 (Dark Cyber Expressway)
   ============================================================ */

:root {
  --bg: #06090e;
  --bg-elevated: #0b1019;
  --bg-subtle: #0f1726;
  --card: rgba(13, 20, 34, 0.75);
  --card-solid: #0d1424;
  --border: rgba(56, 189, 248, 0.15);
  --border-glow: rgba(0, 242, 254, 0.45);
  --heading: #f8fafc;
  --text: #94a3b8;
  --muted: #64748b;
  --blue: #00f2fe;
  --sky: #38bdf8;
  --cyan: #22d3ee;
  --neon-cyan: #00f2fe;
  --neon-blue: #38bdf8;
  --neon-purple: #a855f7;
  --neon-green: #10b981;
  --gradient: linear-gradient(135deg, #00f2fe 0%, #38bdf8 50%, #6366f1 100%);
  --btn-gradient: linear-gradient(135deg, #00f2fe 0%, #0284c7 100%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image: 
    radial-gradient(circle at 80% 15%, rgba(99, 102, 241, 0.08), transparent 45%),
    radial-gradient(circle at 15% 65%, rgba(0, 242, 254, 0.05), transparent 50%),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  background-attachment: fixed;
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 4px;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  color: var(--heading);
}

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

.container {
  width: min(1240px, calc(100% - 80px));
  margin-inline: auto;
}

.icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* --- Buttons --- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 48px;
  padding: 11px 24px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
  transition: all .25s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.button .icon {
  width: 18px;
  height: 18px;
  transition: transform .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:hover .icon {
  transform: translateX(3px);
}

.primary {
  background: var(--btn-gradient);
  color: #040814;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.primary:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  box-shadow: 0 0 28px rgba(0, 242, 254, 0.6);
}

.secondary {
  background: rgba(14, 21, 35, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: #f1f5f9;
}

.secondary:hover,
.outline:hover {
  background: rgba(0, 242, 254, 0.12);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 18px rgba(0, 242, 254, 0.25);
}

.small {
  min-height: 40px;
  padding: 8px 18px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 20px;
  z-index: 100;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  background: #0d1424;
  color: var(--heading);
}

.skip-link:focus {
  width: auto;
  height: auto;
  padding: 12px 16px;
  clip-path: none;
  border: 1px solid var(--neon-cyan);
  border-radius: 8px;
}

#main:focus {
  outline: none;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: border-color .2s, box-shadow .2s;
}

.site-header.scrolled {
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.7), 0 0 20px rgba(0, 242, 254, 0.08);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 70px;
}

.brand {
  width: 168px;
  flex-shrink: 0;
}

.brand img {
  width: 100%;
  height: auto;
  filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(0, 242, 254, 0.35));
  transition: filter 0.3s ease;
}

.brand:hover img {
  filter: brightness(0) invert(1) drop-shadow(0 0 16px rgba(0, 242, 254, 0.65));
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
}

.nav-links {
  display: flex;
  gap: 32px;
  margin-inline: auto;
}

.nav-links a {
  font-size: 15px;
  padding: 12px 0;
  color: #cbd5e1;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--neon-cyan);
  text-shadow: 0 0 12px rgba(0, 242, 254, 0.6);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: 42px;
}

.login {
  font-size: 15px;
  color: #e2e8f0;
  border: 1px solid rgba(56, 189, 248, 0.28);
  padding: 8px 18px;
  border-radius: 8px;
  background: rgba(14, 21, 35, 0.5);
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
}

.login:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 14px rgba(0, 242, 254, 0.3);
}

.menu-toggle {
  display: none;
}

/* --- Hero Section --- */
.hero {
  background: 
    radial-gradient(ellipse at 80% 30%, rgba(0, 242, 254, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 70%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
    transparent;
  position: relative;
}

.hero-inner {
  min-height: 681px;
  display: grid;
  grid-template-columns: 1.03fr 1fr;
  align-items: center;
  gap: 44px;
  padding-block: 55px 68px;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 2px;
  font-weight: 600;
  color: var(--neon-cyan);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  padding: 6px 14px;
  border-radius: 9999px;
  width: fit-content;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green);
  flex-shrink: 0;
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero h1 {
  font-size: 54px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -2px;
  color: #ffffff;
}

.brand-line {
  display: block;
  font-size: 24px;
  letter-spacing: -.6px;
  margin-bottom: 16px;
  font-weight: 600;
  color: #e2e8f0;
}

.brand-line>span {
  font-size: 23px;
  font-weight: 600;
  margin-left: 6px;
  color: var(--neon-cyan);
  text-shadow: 0 0 12px rgba(0, 242, 254, 0.4);
}

.blue-text {
  background: linear-gradient(135deg, #00f2fe 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  filter: drop-shadow(0 0 20px rgba(0, 242, 254, 0.3));
}

.hero-description {
  max-width: 465px;
  line-height: 1.95;
  font-size: 15px;
  margin-top: 25px;
  color: #94a3b8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
}

.trust-list {
  display: flex;
  gap: 19px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
  font-size: 12px;
  color: #94a3b8;
}

.trust-list li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-list .icon {
  width: 14px;
  height: 14px;
  color: var(--neon-cyan);
  filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.5));
}

.hero-banner {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(0, 242, 254, 0.25);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75), 0 0 35px rgba(0, 242, 254, 0.15);
  position: relative;
}

.hero-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 65%, rgba(6, 9, 14, 0.6) 100%);
  pointer-events: none;
}

.hero-banner img {
  filter: contrast(1.06) brightness(0.92);
  transition: transform 0.4s ease;
}

.hero-banner:hover img {
  transform: scale(1.02);
}

.hero-footnote {
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  padding-block: 21px;
  font-size: 11px;
  color: #64748b;
  font-family: monospace, monospace;
}

.hero-footnote span:last-child {
  font-size: 10px;
  letter-spacing: 1.8px;
  color: #475569;
}

/* --- Topology / Network Visual (Cyber HUD) --- */
.network-visual {
  position: relative;
  background: rgba(10, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 242, 254, 0.12);
  margin-top: 4px;
  transform: rotate(-1deg);
}

.visual-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 22px;
  padding: 19px 0;
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
  font-size: 11px;
  letter-spacing: 1.5px;
  color: #38bdf8;
  font-family: monospace, monospace;
}

.visual-heading>span:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-label {
  font-size: 10px;
  letter-spacing: 0;
  color: #00f2fe;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 4px;
  padding: 2px 7px;
  font-family: monospace, monospace;
}

.topology {
  height: 350px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: 50%;
  z-index: -1;
}

.orbit-one {
  width: 240px;
  height: 240px;
}

.orbit-two {
  width: 365px;
  height: 365px;
  border-style: dashed;
  border-color: rgba(0, 242, 254, 0.22);
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.06);
}

.network-paths {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.network-paths path:first-child {
  stroke: rgba(56, 189, 248, 0.32) !important;
}

.network-paths path:last-child {
  stroke: #00f2fe !important;
  filter: drop-shadow(0 0 6px #00f2fe);
}

.network-core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #080c14;
  border: 1px solid rgba(0, 242, 254, 0.45);
  border-radius: 16px;
  padding: 18px 17px 13px;
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.25), inset 0 0 15px rgba(0, 242, 254, 0.08);
  width: 158px;
}

.network-core>.network-brand-icon {
  display: block;
  width: 52px;
  height: 52px;
  object-fit: contain;
  flex-shrink: 0;
  margin-bottom: 9px;
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.5));
}

.network-core strong {
  font-size: 14px;
  color: #f8fafc;
  font-weight: 600;
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
}

.network-core>span {
  font-size: 9px;
  margin-top: 3px;
  color: #64748b;
  font-family: monospace, monospace;
}

.node {
  display: flex;
  align-items: center;
  position: absolute;
  gap: 9px;
  padding: 10px 11px;
  background: rgba(13, 19, 32, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  min-width: 123px;
  transition: all 0.25s ease;
}

.node:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
  transform: translateY(-2px);
}

.node-hk {
  left: 5%;
  top: 15%;
}

.node-jp {
  right: 4%;
  top: 12%;
}

.node-us {
  left: 2%;
  bottom: 17%;
}

.node-sg {
  right: 3%;
  bottom: 13%;
}

.node-mark {
  font-size: 10px;
  background: rgba(0, 242, 254, 0.12);
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 242, 254, 0.35);
  border-radius: 7px;
  width: 29px;
  height: 32px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-family: monospace, monospace;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.node strong,
.node div>span {
  display: block;
}

.node strong {
  font-size: 11px;
  color: #f1f5f9;
  font-weight: 600;
}

.node div>span {
  font-size: 10px;
  color: #64748b;
}

.node i {
  width: 5px;
  height: 5px;
  background: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green);
  border-radius: 50%;
  margin-left: 4px;
  animation: pulse-dot 1.5s infinite;
}

.network-bottom {
  padding: 14px 18px;
  border-top: 1px solid rgba(56, 189, 248, 0.12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: #94a3b8;
  font-family: monospace, monospace;
}

.network-bottom>div {
  display: flex;
  gap: 8px;
  align-items: center;
}

.network-bottom .icon {
  width: 15px;
  height: 15px;
  color: var(--neon-cyan);
}

.network-bottom b {
  font-weight: 400;
  color: var(--neon-cyan);
  margin: 0 5px;
}

.network-caption {
  font-size: 10px;
  color: #64748b;
}

/* --- Sections --- */
.section {
  padding: 94px 0;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
  margin-bottom: 36px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  font-weight: 700;
  margin-bottom: 13px;
  text-shadow: 0 0 12px rgba(0, 242, 254, 0.4);
  font-family: monospace, monospace;
}

h2 {
  font-size: 30px;
  line-height: 1.4;
  letter-spacing: -.8px;
  font-weight: 700;
  color: #ffffff;
}

.section-heading>p {
  font-size: 14px;
  line-height: 1.85;
  color: #94a3b8;
}

/* --- Feature Grid (Advantages & Scenarios) --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  background: rgba(14, 21, 35, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 18px;
  padding: 28px 25px 27px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.feature-card:hover,
.price-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 242, 254, 0.5);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.7), 0 0 28px rgba(0, 242, 254, 0.2);
}

.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--neon-cyan);
  border-radius: 12px;
  margin-bottom: 25px;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #f1f5f9;
}

.feature-card p {
  font-size: 13px;
  line-height: 1.9;
  color: #94a3b8;
}

.section-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 24px;
}

/* --- Pricing Section (Cyber Terminal Pricing) --- */
.pricing-section {
  background: rgba(8, 12, 20, 0.85);
  border-block: 1px solid rgba(56, 189, 248, 0.15);
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.price-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(56, 189, 248, 0.16);
  border-radius: 18px;
  padding: 26px 22px 22px;
  background: rgba(14, 21, 35, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  position: relative;
  overflow: hidden;
}

.plan-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 5px;
  min-height: 24px;
}

.plan-title h3 {
  font-size: 16px;
  font-weight: 700;
  color: #f8fafc;
}

.recommend-label {
  font-size: 11px;
  color: #00f2fe;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.18), rgba(168, 85, 247, 0.25));
  border: 1px solid rgba(0, 242, 254, 0.45);
  padding: 3px 9px;
  border-radius: 6px;
  font-family: monospace, monospace;
  font-weight: 600;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.25);
}

.price {
  font-size: 34px;
  letter-spacing: -1.4px;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
  margin-top: 20px;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.currency {
  font-size: 18px;
  vertical-align: 4px;
  margin-right: 3px;
  letter-spacing: 0;
  color: var(--neon-cyan);
}

.period {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
  margin-left: 6px;
}

.traffic {
  border-block: 1px solid rgba(56, 189, 248, 0.12);
  padding: 19px 0 16px;
  margin-top: 23px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.traffic strong {
  font-size: 24px;
  font-weight: 700;
  color: #f1f5f9;
  line-height: 1.3;
  letter-spacing: -.5px;
}

.traffic strong span {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--neon-cyan);
}

.traffic>span {
  font-size: 12px;
  color: var(--muted);
}

.specs {
  margin: 18px 0 25px;
  font-size: 13px;
  display: grid;
  gap: 11px;
}

.specs>div {
  display: flex;
  justify-content: space-between;
  gap: 6px;
}

.specs dt {
  color: var(--muted);
}

.specs dd {
  margin: 0;
  color: #cbd5e1;
  font-weight: 500;
}

.specs>div:nth-child(n+3) dd {
  color: #64748b;
  font-weight: 400;
}

.price-card .button {
  margin-top: auto;
  width: 100%;
  font-size: 14px;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
}

.outline {
  border-color: rgba(56, 189, 248, 0.25);
  color: #f1f5f9;
  background: rgba(14, 21, 35, 0.6);
}

.recommended {
  border-color: rgba(0, 242, 254, 0.7);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.22), inset 0 0 20px rgba(0, 242, 254, 0.08);
  background: linear-gradient(180deg, rgba(16, 26, 44, 0.9) 0%, rgba(11, 17, 30, 0.85) 100%);
}

.recommended::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #00f2fe, #a855f7, transparent);
  box-shadow: 0 0 15px #00f2fe;
}

.pricing-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 24px;
}

/* --- Scenarios Section --- */
.scenarios-section {
  background: rgba(9, 13, 22, 0.7);
  border-block: 1px solid rgba(56, 189, 248, 0.12);
}

.scenarios-section .feature-card {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.scenarios-section .icon-box {
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c084fc;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.18);
}

/* --- FAQ Section --- */
.faq-layout {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 80px;
}

.faq-intro>p:not(.section-label) {
  font-size: 14px;
  margin-top: 20px;
  line-height: 1.9;
  color: #94a3b8;
}

.faq-aside {
  font-size: 12px;
  color: #94a3b8;
  border-left: 2px solid var(--neon-cyan);
  background: rgba(0, 242, 254, 0.05);
  padding: 14px 16px;
  border-radius: 0 8px 8px 0;
  margin-top: 38px;
}

.faq-item {
  border-bottom: 1px solid rgba(56, 189, 248, 0.14);
}

.faq-item:first-child {
  border-top: 1px solid rgba(56, 189, 248, 0.14);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  list-style: none;
  cursor: pointer;
  padding: 21px 0;
  color: #f1f5f9;
  font-size: 15px;
  font-weight: 500;
  min-height: 64px;
  transition: color 0.2s ease;
}

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

.faq-item summary:hover {
  color: var(--neon-cyan);
}

.faq-plus {
  height: 16px;
  width: 16px;
  position: relative;
  flex-shrink: 0;
}

.faq-plus:before,
.faq-plus:after {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 12px;
  height: 2px;
  background: #38bdf8;
  border-radius: 1px;
}

.faq-plus:after {
  transform: rotate(90deg);
  transition: transform .2s;
}

.faq-item[open] .faq-plus:after {
  transform: rotate(0);
}

.faq-item[open] summary {
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

.faq-answer {
  padding: 0 35px 23px 0;
  font-size: 14px;
  line-height: 1.95;
  color: #94a3b8;
}

.faq-answer a {
  color: var(--neon-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.faq-item[open] .faq-answer {
  animation: appear .2s ease;
}

@keyframes appear {
  from {
    opacity: 0;
    transform: translateY(-3px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Final CTA (Cyber Expressway Panel) --- */
.final-cta {
  padding: 0 0 83px;
}

.cta-panel {
  padding: 48px 54px;
  background: linear-gradient(135deg, #091a32 0%, #061122 50%, #0c0f1c 100%);
  border: 1px solid rgba(0, 242, 254, 0.35);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 35px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 50px rgba(0, 242, 254, 0.18);
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 70% 30%, rgba(0, 242, 254, 0.12), transparent 40%);
  pointer-events: none;
}

.cta-panel .section-label {
  color: #00f2fe;
  font-size: 10px;
}

.cta-panel h2 {
  color: #ffffff;
  font-size: 28px;
}

.cta-panel p:not(.section-label) {
  margin-top: 16px;
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.9;
}

.white-button {
  color: #040814;
  background: var(--btn-gradient);
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.white-button:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.65);
}

/* --- Site Footer --- */
.site-footer {
  background: #05070c;
  border-top: 1px solid rgba(56, 189, 248, 0.12);
  padding: 46px 0 0;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 35px;
  padding-bottom: 37px;
}

.footer-brand img {
  width: 160px;
  filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(0, 242, 254, 0.3));
}

.footer-brand p {
  font-size: 12px;
  margin-top: 17px;
  line-height: 1.9;
  color: var(--muted);
}

.footer-nav {
  display: flex;
  gap: 24px;
  padding-top: 10px;
  font-size: 13px;
}

.footer-actions {
  display: flex;
  gap: 22px;
  padding-top: 10px;
  font-size: 13px;
}

.footer-actions a:last-child {
  color: var(--neon-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-actions .icon {
  width: 14px;
  height: 14px;
}

.footer-nav a:hover,
.footer-actions a:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
}

.footer-bottom {
  border-top: 1px solid rgba(56, 189, 248, 0.08);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 25px;
  padding: 21px 0;
  font-size: 12px;
  color: #475569;
}

.footer-info-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  padding: 0 0 18px;
  font-size: 13px;
  justify-content: center;
  text-align: center;
}

.footer-info-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #64748b;
  transition: color 0.2s;
}

.footer-info-nav a:hover,
.footer-info-nav a[aria-current="page"] {
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
}

/* --- Info Subpages --- */
.info-main {
  min-height: calc(100svh - 72px);
  padding: 54px 0 80px;
}

.info-container {
  max-width: 900px;
}

.info-heading {
  padding: 28px 0 34px;
}

.info-heading h1 {
  font-size: 38px;
  line-height: 1.3;
  letter-spacing: -1px;
  font-weight: 700;
  color: #ffffff;
}

.info-heading>p:not(.section-label) {
  margin-top: 17px;
  font-size: 15px;
  color: #94a3b8;
}

.info-date {
  display: block;
  margin-top: 16px;
  font-size: 12px;
  color: var(--muted);
  font-family: monospace, monospace;
}

.info-content {
  padding: 16px 36px;
  background: rgba(14, 21, 35, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.info-section {
  padding: 26px 0;
}

.info-section+.info-section {
  border-top: 1px solid rgba(56, 189, 248, 0.12);
}

.info-section h2 {
  font-size: 19px;
  letter-spacing: 0;
  margin-bottom: 12px;
  color: #f1f5f9;
}

.info-section p {
  font-size: 14px;
  line-height: 1.95;
  overflow-wrap: anywhere;
  color: #94a3b8;
}

.info-section a {
  color: var(--neon-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-email {
  font-size: 16px;
  font-weight: 500;
}

.contact-email a {
  text-decoration: none;
  color: var(--neon-cyan);
}

.contact-email a:hover,
.contact-email a:focus-visible {
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.breadcrumbs ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.breadcrumbs a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #94a3b8;
}

.breadcrumbs a:hover {
  color: var(--neon-cyan);
}

.breadcrumbs [aria-current="page"] {
  color: #f1f5f9;
}

.breadcrumb-divider {
  color: var(--muted);
}

/* ============================================================
   Responsive Media Queries
   ============================================================ */

@media(min-width:1500px) {
  .hero-inner {
    min-height: 721px;
  }
}

@media(max-width:1150px) {
  .container {
    width: calc(100% - 56px);
  }

  .header-inner {
    gap: 30px;
  }

  .nav-links {
    gap: 24px;
  }

  .hero-inner {
    gap: 28px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .brand-line {
    font-size: 22px;
  }

  .brand-line>span {
    font-size: 21px;
  }

  .network-core {
    width: 139px;
  }

  .node {
    min-width: 110px;
    gap: 7px;
    padding: 9px;
  }

  .node-hk {
    left: 2%;
  }

  .node-jp {
    right: 2%;
  }

  .node-us {
    left: 1%;
  }

  .node-sg {
    right: 1%;
  }

  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .price {
    font-size: 35px;
  }

  .feature-card {
    padding: 24px 20px;
  }

  .section-heading>p {
    max-width: 360px;
  }

  .faq-layout {
    gap: 45px;
  }

  .footer-nav {
    gap: 17px;
  }

  .footer-top {
    gap: 22px;
  }
}

@media(max-width:900px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    min-height: 650px;
  }

  .hero h1 {
    font-size: 39px;
  }

  .brand-line,
  .brand-line>span {
    font-size: 19px;
  }

  .hero-description {
    font-size: 13px;
  }

  .trust-list {
    gap: 10px;
    flex-wrap: wrap;
    font-size: 11px;
  }

  .topology {
    height: 330px;
  }

  .network-core {
    width: 123px;
    padding: 13px 8px;
  }

  .network-core>.network-brand-icon {
    width: 43px;
    height: 43px;
  }

  .network-core strong {
    font-size: 12px;
  }

  .network-core>span {
    font-size: 8px;
  }

  .node {
    min-width: 92px;
    padding: 8px 6px;
    gap: 6px;
  }

  .node-mark {
    width: 23px;
    height: 27px;
    font-size: 8px;
  }

  .node i {
    display: none;
  }

  .node div>span {
    font-size: 10px;
  }

  .node-hk {
    top: 9%;
    left: 5%;
  }

  .node-jp {
    top: 9%;
    right: 3%;
  }

  .node-us {
    bottom: 9%;
    left: 4%;
  }

  .node-sg {
    bottom: 9%;
    right: 3%;
  }

  .network-caption {
    display: none;
  }

  .network-bottom {
    justify-content: center;
  }

  .visual-heading {
    margin-inline: 14px;
    font-size: 9px;
    letter-spacing: 1px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading {
    align-items: flex-start;
  }

  .section-heading>p {
    max-width: 300px;
  }

  h2 {
    font-size: 26px;
  }

  .nav-links {
    gap: 18px;
  }

  .nav-actions {
    margin-left: 20px;
    gap: 18px;
  }

  .brand {
    width: 145px;
  }

  .footer-top {
    flex-wrap: wrap;
  }

  .footer-brand {
    flex: 1 1 100%;
  }

  .footer-nav {
    padding-top: 0;
  }

  .footer-actions {
    padding-top: 0;
  }
}

@media(max-width:700px) {
  html {
    scroll-padding-top: 84px;
  }

  .container {
    width: calc(100% - 40px);
  }

  .header-inner {
    height: 66px;
    justify-content: space-between;
  }

  .brand {
    width: 145px;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    align-items: center;
    border: 1px solid rgba(56, 189, 248, 0.3);
    background: rgba(14, 21, 35, 0.85);
    border-radius: 8px;
    cursor: pointer;
  }

  .menu-toggle span {
    width: 18px;
    height: 2px;
    background: #f1f5f9;
    transition: transform .2s;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    padding: 16px 20px 24px;
    background: rgba(7, 9, 14, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(56, 189, 248, 0.2);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.8);
    max-height: calc(100dvh - 66px);
    overflow: auto;
  }

  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .nav-links a {
    padding: 12px 8px;
    min-height: 44px;
    border-bottom: 1px solid rgba(56, 189, 248, 0.08);
  }

  .nav-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    margin: 12px 0 0;
    gap: 10px;
    border-top: 1px solid rgba(56, 189, 248, 0.15);
    padding-top: 12px;
  }

  .login {
    padding: 11px 8px;
    min-height: 44px;
    text-align: center;
  }

  .nav-actions .button {
    min-height: 44px;
  }

  .hero-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 45px 0 60px;
    gap: 36px;
  }

  .eyebrow {
    font-size: 11px;
    margin-bottom: 20px;
  }

  .hero h1 {
    font-size: 38px;
    letter-spacing: -1.2px;
    line-height: 1.25;
  }

  .brand-line,
  .brand-line>span {
    font-size: 20px;
    letter-spacing: -.4px;
  }

  .brand-line {
    margin-bottom: 14px;
  }

  .hero-description {
    font-size: 14px;
    max-width: 470px;
    margin-top: 18px;
  }

  .hero-actions {
    margin-top: 24px;
  }

  .hero-actions .button {
    padding: 12px 20px;
    min-height: 46px;
  }

  .trust-list {
    gap: 14px;
    font-size: 11px;
    margin-top: 20px;
  }

  .network-visual {
    transform: none;
    margin: 7px 0 0;
    width: 100%;
    max-width: 490px;
    align-self: center;
  }

  .topology {
    height: 310px;
  }

  .visual-heading {
    padding: 15px 0;
    font-size: 10px;
  }

  .network-core {
    width: 136px;
    padding: 16px 10px;
  }

  .network-core>.network-brand-icon {
    width: 47px;
    height: 47px;
  }

  .node {
    min-width: 102px;
    padding: 8px;
    gap: 7px;
  }

  .node-hk {
    top: 9%;
    left: 4%;
  }

  .node-jp {
    right: 4%;
    top: 9%;
  }

  .node-us {
    bottom: 9%;
    left: 3%;
  }

  .node-sg {
    bottom: 9%;
    right: 3%;
  }

  .node-mark {
    width: 25px;
    height: 29px;
  }

  .node strong {
    font-size: 10px;
  }

  .network-bottom {
    padding: 13px;
  }

  .hero-footnote {
    padding: 17px 0;
    font-size: 10px;
  }

  .hero-footnote span:last-child {
    font-size: 8px;
    letter-spacing: .6px;
    max-width: 137px;
    text-align: right;
  }

  .section {
    padding: 62px 0;
  }

  .section-heading {
    display: block;
    margin-bottom: 27px;
  }

  .section-heading>p {
    margin-top: 15px;
    max-width: none;
    font-size: 13px;
  }

  .desktop-break {
    display: none;
  }

  .section-label {
    font-size: 10px;
    margin-bottom: 11px;
    letter-spacing: 1.6px;
  }

  h2 {
    font-size: 25px;
    letter-spacing: -.6px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 36px 28px;
    gap: 24px;
  }

  .cta-panel .button {
    width: 100%;
  }
}

/* --- Coverage Section Nodes Layout --- */
@media(min-width:701px) {
  .coverage-section .node-tw {
    left: 10%;
    top: 50%;
    transform: translateY(-50%);
  }

  .coverage-section .node-kr {
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
  }
}

@media(max-width:700px) {
  .coverage-section .topology {
    height: 384px;
  }

  .coverage-section .network-core {
    top: 79px;
  }

  .coverage-section .orbit {
    top: 36%;
  }

  .coverage-section .node {
    width: calc(50% - 22px);
    min-width: 0;
    min-height: 48px;
    padding: 8px;
    transform: none;
    bottom: auto;
  }

  .coverage-section .node-hk {
    left: 4%;
    right: auto;
    top: 172px;
  }

  .coverage-section .node-jp {
    right: 4%;
    left: auto;
    top: 172px;
  }

  .coverage-section .node-us {
    left: 4%;
    right: auto;
    top: 304px;
  }

  .coverage-section .node-sg {
    right: 4%;
    left: auto;
    top: 304px;
  }

  .coverage-section .node-tw {
    left: 4%;
    right: auto;
    top: 238px;
  }

  .coverage-section .node-kr {
    right: 4%;
    left: auto;
    top: 238px;
  }
}

.coverage-section .node div>span {
  white-space: nowrap;
}