:root {
  --bg: #020914;
  --bg-soft: #07162b;
  --panel: rgba(5, 20, 42, 0.82);
  --line: rgba(70, 160, 255, 0.28);
  --line-strong: rgba(43, 157, 255, 0.68);
  --text: #f4f8ff;
  --muted: #a8bbd8;
  --blue: #1688ff;
  --cyan: #27d9ff;
  --red: #ff4c5f;
  --shadow: 0 24px 70px rgba(0, 104, 255, 0.2);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 70% 8%, rgba(27, 111, 224, 0.24), transparent 34%),
    radial-gradient(circle at 12% 26%, rgba(255, 54, 85, 0.13), transparent 25%),
    linear-gradient(180deg, #020914 0%, #031226 48%, #04111f 100%);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 82px;
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 0 clamp(18px, 4vw, 76px);
  background: rgba(3, 12, 27, 0.88);
  border-bottom: 1px solid rgba(43, 157, 255, 0.18);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 27px;
  font-weight: 900;
  white-space: nowrap;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  position: relative;
  border: 2px solid var(--cyan);
  border-radius: 9px;
  transform: rotate(45deg);
  box-shadow: 0 0 24px rgba(39, 217, 255, 0.58);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 5px;
  width: 8px;
  height: 15px;
  border-right: 3px solid var(--cyan);
  border-bottom: 3px solid var(--cyan);
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(16px, 2.1vw, 34px);
  color: #dbe8fb;
  font-size: 16px;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding: 30px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 16px;
  width: 0;
  height: 4px;
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 18px var(--blue);
  transform: translateX(-50%);
  transition: width 0.2s ease;
}

.main-nav a:hover::after,
.main-nav a:first-child::after { width: 30px; }

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 30px;
  border-radius: 7px;
  font-size: 18px;
  font-weight: 900;
  border: 1px solid rgba(43, 157, 255, 0.35);
}

.header-cta,
.btn-primary {
  background: linear-gradient(135deg, #178cff, #096dff);
  box-shadow: 0 14px 36px rgba(9, 109, 255, 0.34);
}

.btn-ghost {
  background: rgba(2, 16, 35, 0.58);
  color: #edf6ff;
}

.btn-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #fff;
  color: #0978ff;
  font-size: 13px;
  font-weight: 900;
}

.hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  border-bottom: 1px solid rgba(43, 157, 255, 0.2);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 34%, rgba(18, 99, 190, 0.32), transparent 34%),
    linear-gradient(90deg, #020914 0%, rgba(2, 9, 20, 0.98) 37%, rgba(2, 12, 29, 0.72) 72%, #041020 100%);
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.45;
  background:
    radial-gradient(circle at 73% 27%, rgba(20, 142, 255, 0.38), transparent 26%),
    radial-gradient(circle at 35% 29%, rgba(255, 66, 82, 0.2), transparent 18%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: block;
  min-height: 520px;
  max-width: 1500px;
  margin: 0 auto;
  padding: 76px clamp(18px, 4vw, 64px) 20px;
}

.hero-copy {
  position: relative;
  z-index: 4;
  max-width: 590px;
}

.eyebrow,
.section-head p,
.cta-band p {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(46px, 4.6vw, 66px);
  line-height: 1.02;
  font-weight: 1000;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.18);
}

.hero-lead {
  max-width: 580px;
  margin: 26px 0 34px;
  color: #e3edfb;
  font-size: clamp(20px, 1.8vw, 27px);
  line-height: 1.48;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(4, minmax(118px, 1fr));
  gap: 14px;
  margin-top: 42px;
  max-width: 700px;
}

.hero-points article {
  min-height: 128px;
  padding: 16px 14px;
  border: 1px solid rgba(43, 157, 255, 0.18);
  background: rgba(7, 32, 62, 0.72);
}

.hero-points article:hover {
  border-color: rgba(39, 217, 255, 0.48);
  box-shadow: inset 0 0 24px rgba(39, 217, 255, 0.11);
}

.hero-points strong {
  display: block;
  margin: 8px 0 5px;
  font-size: 14px;
  line-height: 1.25;
}

.hero-points small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.line-icon {
  display: block;
  width: 26px;
  height: 26px;
  border: 2px solid var(--cyan);
  border-radius: 7px;
  box-shadow: 0 0 16px rgba(39, 217, 255, 0.4);
}

.line-icon.pulse { border-radius: 50%; border-top-color: transparent; }
.line-icon.stack { border-radius: 4px; box-shadow: 0 9px 0 -4px var(--cyan), 0 18px 0 -8px rgba(39, 217, 255, 0.75); }
.line-icon.headset { border-radius: 50% 50% 8px 8px; border-bottom-color: transparent; }

.hero-visual {
  position: absolute;
  z-index: 1;
  left: min(43vw, 640px);
  right: 78px;
  top: 90px;
  bottom: 58px;
  min-height: 0;
  display: block;
  pointer-events: none;
}

.hero-visual img {
  width: min(980px, 66vw);
  max-width: none;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  object-position: center;
  opacity: 0.82;
  filter: saturate(1.12) contrast(1.05) drop-shadow(0 30px 70px rgba(0, 110, 255, 0.26));
  mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(ellipse at 48% 54%, #000 0 46%, rgba(0, 0, 0, .75) 58%, transparent 76%);
  mask-image: radial-gradient(ellipse at 48% 54%, #000 0 46%, rgba(0, 0, 0, .75) 58%, transparent 76%);
}

.hero-visual::before {
  display: none;
}

.monitor-card {
  position: absolute;
  z-index: 5;
  right: 128px;
  top: 126px;
  width: 318px;
  padding: 22px;
  background: rgba(4, 16, 36, 0.76);
  border: 1px solid rgba(43, 157, 255, 0.72);
  border-radius: 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.monitor-card span,
.monitor-card strong { display: block; }
.monitor-card span { font-size: 20px; font-weight: 900; }
.monitor-card strong { margin: 18px 0 10px; font-size: 34px; }
.monitor-card p {
  display: flex;
  justify-content: space-between;
  margin: 8px 0;
  color: var(--muted);
}
.monitor-card b { color: #fff; }

.bars {
  height: 116px;
  margin-top: 20px;
  padding: 20px 0 0;
  display: flex;
  gap: 13px;
  align-items: flex-end;
  border-bottom: 1px solid rgba(104, 174, 255, 0.36);
}

.bars i {
  width: 16px;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, #32eaff, #137dff);
  box-shadow: 0 0 18px rgba(39, 217, 255, 0.58);
  animation: barPulse 2.2s ease-in-out infinite;
}
.bars i:nth-child(1) { height: 42px; }
.bars i:nth-child(2) { height: 70px; animation-delay: .15s; }
.bars i:nth-child(3) { height: 55px; animation-delay: .3s; }
.bars i:nth-child(4) { height: 82px; animation-delay: .45s; }
.bars i:nth-child(5) { height: 74px; animation-delay: .6s; }
.bars i:nth-child(6) { height: 102px; animation-delay: .75s; }

@keyframes barPulse {
  0%, 100% { transform: scaleY(.82); opacity: .82; }
  50% { transform: scaleY(1); opacity: 1; }
}

.hero-stats {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto 44px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(43, 157, 255, 0.24);
  background: rgba(43, 157, 255, 0.12);
}

.hero-stats span {
  padding: 22px 32px;
  background: rgba(4, 18, 39, 0.8);
  color: var(--muted);
}
.hero-stats b {
  display: block;
  color: #fff;
  font-size: 26px;
  margin-bottom: 6px;
}

.section,
.network-section,
.service-section,
.cta-band {
  max-width: 1500px;
  margin: 0 auto;
  padding: 68px clamp(18px, 4vw, 64px);
}

.section-head {
  display: block;
  margin-bottom: 36px;
  text-align: center;
}

.section-head h2,
.cta-band h2 {
  margin: 0;
  font-size: clamp(26px, 2.55vw, 36px);
  line-height: 1.12;
  font-weight: 1000;
}

.section-head a {
  display: inline-flex;
  margin-top: 14px;
  padding: 12px 18px;
  color: #dff4ff;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.plan-card {
  position: relative;
  min-height: 326px;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(43, 157, 255, 0.28);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(9, 34, 69, 0.86), rgba(4, 16, 35, 0.92));
  box-shadow: inset 0 0 30px rgba(22, 136, 255, 0.08);
  transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.plan-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 72% 18%, rgba(39, 217, 255, 0.18), transparent 30%);
  pointer-events: none;
}

.plan-card::after,
.network-feature-grid article::after,
.scenario-grid article::after,
.case-grid article::after,
.why-grid article::after,
.flow-grid article::after {
  content: "";
  position: absolute;
  top: -40%;
  left: -70%;
  width: 42%;
  height: 180%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
  transform: rotate(18deg);
  opacity: 0;
  pointer-events: none;
}

.plan-card:hover,
.network-feature-grid article:hover,
.scenario-grid article:hover,
.case-grid article:hover,
.why-grid article:hover,
.flow-grid article:hover,
.faq-list details:hover,
.hero-points article:hover {
  transform: translateY(-6px);
  border-color: rgba(39, 217, 255, 0.62);
  background-color: rgba(8, 35, 70, 0.86);
  box-shadow: 0 22px 52px rgba(0, 116, 255, 0.18), inset 0 0 28px rgba(39, 217, 255, 0.08);
}

.plan-card:hover::after,
.network-feature-grid article:hover::after,
.scenario-grid article:hover::after,
.case-grid article:hover::after,
.why-grid article:hover::after,
.flow-grid article:hover::after {
  animation: shineSweep .85s ease forwards;
}

.route-card,
.network-hub,
.hero-stats span,
.float-item,
.btn {
  transition: transform .22s ease, filter .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
}

.route-card:hover,
.network-hub:hover,
.hero-stats span:hover,
.float-item:hover,
.btn:hover {
  transform: translateY(-4px);
  filter: brightness(1.08);
  border-color: rgba(39, 217, 255, 0.68);
  box-shadow: 0 18px 42px rgba(0, 116, 255, 0.18);
}

@keyframes shineSweep {
  from { left: -70%; opacity: 0; }
  25% { opacity: 1; }
  to { left: 130%; opacity: 0; }
}

.plan-media {
  position: absolute;
  right: 24px;
  top: 26px;
  width: 210px;
  height: 108px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.96;
}

.plan-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 14px 20px rgba(0, 119, 255, 0.3));
}
.plan-card .tag {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  color: #bceeff;
  background: rgba(39, 217, 255, 0.12);
  border: 1px solid rgba(39, 217, 255, 0.3);
  font-size: 13px;
  font-weight: 800;
}

.plan-card h3 {
  position: relative;
  max-width: 56%;
  margin: 22px 0 10px;
  font-size: 22px;
}

.price {
  color: #fff;
  font-size: 31px;
  font-weight: 1000;
}

.specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 22px 0;
  color: #d8e7fb;
}
.specs span {
  padding: 10px;
  border: 1px solid rgba(43, 157, 255, 0.2);
  background: rgba(1, 9, 20, 0.34);
}

.plan-card .buy {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 18px;
  border-radius: 7px;
  background: var(--blue);
  font-weight: 900;
}

.why-grid,
.scenario-grid,
.case-grid,
.flow-grid {
  display: grid;
  gap: 22px;
}

.why-grid {
  grid-template-columns: repeat(3, 1fr);
}

.why-grid article,
.flow-grid article,
.faq-list details {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(43, 157, 255, 0.24);
  border-radius: 8px;
  background: rgba(5, 20, 42, 0.74);
  padding: 26px;
  transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.why-grid span,
.flow-grid span {
  color: var(--cyan);
  font-size: 22px;
  font-weight: 1000;
}

.why-grid h3,
.flow-grid h3,
.case-grid h3,
.scenario-grid h3 {
  margin: 14px 0 10px;
  font-size: 18px;
}

.why-grid p,
.flow-grid p,
.case-grid p,
.scenario-grid p,
.network-copy p,
.network-copy li span,
.faq-list p,
.site-footer p {
  color: var(--muted);
  line-height: 1.75;
}

.network-section {
  max-width: none;
  border-top: 1px solid rgba(43, 157, 255, 0.16);
  border-bottom: 1px solid rgba(43, 157, 255, 0.16);
  background:
    linear-gradient(180deg, rgba(5, 24, 50, 0.62), rgba(2, 9, 20, 0.54)),
    linear-gradient(90deg, rgba(57, 139, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(57, 139, 255, 0.07) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
}

.network-section .section-head,
.network-layout {
  max-width: 1500px;
  margin-left: auto;
  margin-right: auto;
}

.network-section .section-head,
.scenarios-section .section-head,
.service-section .section-head,
.faq-section .section-head {
  text-align: center;
}

.network-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 24px;
  align-items: start;
}

.network-diagram {
  position: relative;
  min-height: 420px;
  border: 1px solid rgba(43, 157, 255, 0.28);
  border-radius: 8px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(39, 217, 255, 0.18), transparent 28%),
    linear-gradient(135deg, rgba(5, 24, 50, 0.72), rgba(2, 10, 22, 0.88));
}

.network-diagram::before,
.network-diagram::after {
  content: "";
  position: absolute;
  inset: 58px;
  border: 1px solid rgba(39, 217, 255, 0.16);
  border-radius: 50%;
}

.network-diagram::after {
  inset: 104px;
  border-style: dashed;
  animation: networkSpin 18s linear infinite;
}

.network-hub {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 174px;
  height: 174px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(39, 217, 255, 0.68);
  border-radius: 50%;
  background: rgba(3, 17, 36, 0.88);
  box-shadow: 0 0 48px rgba(39, 217, 255, 0.22);
}

.network-hub span {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  margin-bottom: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1688ff, #27d9ff);
  color: #fff;
  font-weight: 1000;
}

.network-hub strong {
  font-size: 18px;
}

.network-hub small,
.route-card span,
.network-feature-grid p {
  color: var(--muted);
}

.route-card {
  position: absolute;
  width: 178px;
  padding: 16px;
  border: 1px solid rgba(43, 157, 255, 0.28);
  border-radius: 8px;
  background: rgba(4, 18, 39, 0.82);
}

.route-card::before {
  content: "";
  position: absolute;
  width: 70px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}

.route-card b,
.route-card span,
.route-card em {
  display: block;
}

.route-card span {
  margin: 8px 0;
  font-size: 13px;
  line-height: 1.45;
}

.route-card em {
  color: var(--cyan);
  font-style: normal;
  font-weight: 900;
}

.route-1 { left: 34px; top: 42px; }
.route-1::before { right: -70px; top: 50%; }
.route-2 { right: 34px; top: 42px; }
.route-2::before { left: -70px; top: 50%; transform: rotate(180deg); }
.route-3 { left: 34px; bottom: 42px; }
.route-3::before { right: -70px; top: 50%; }
.route-4 { right: 34px; bottom: 42px; }
.route-4::before { left: -70px; top: 50%; transform: rotate(180deg); }

.network-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.network-feature-grid article {
  position: relative;
  overflow: hidden;
  min-height: 198px;
  padding: 24px;
  border: 1px solid rgba(43, 157, 255, 0.3);
  border-radius: 8px;
  background: rgba(5, 20, 42, 0.8);
}

.network-feature-grid span {
  color: var(--cyan);
  font-size: 24px;
  font-weight: 1000;
}

.network-feature-grid h3 {
  margin: 18px 0 10px;
  font-size: 20px;
}

@keyframes networkSpin {
  to { transform: rotate(360deg); }
}

.network-map {
  display: none;
}
.network-map::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 52% 50%, transparent 0 45%, rgba(3, 12, 27, 0.74) 86%);
}
.network-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
  filter: saturate(1.15) contrast(1.08);
}
.city-pill {
  position: absolute;
  z-index: 2;
  padding: 10px 18px;
  border: 1px solid rgba(110, 198, 255, 0.72);
  border-radius: 999px;
  background: rgba(4, 20, 43, 0.88);
  box-shadow: 0 0 22px rgba(39, 217, 255, 0.25);
  font-weight: 800;
}
.tokyo { left: 54%; top: 42%; }
.osaka { left: 42%; top: 58%; }
.nagoya { left: 50%; top: 56%; }
.fukuoka { left: 33%; top: 68%; }
.china { left: 16%; top: 38%; }

.scenario-grid {
  grid-template-columns: repeat(6, 1fr);
}

.scenario-grid article {
  min-height: 0;
  position: relative;
  overflow: hidden;
  padding: 0;
  border-radius: 8px;
  border: 1px solid rgba(43, 157, 255, 0.24);
  background: rgba(5, 20, 42, 0.82);
}

.scenario-grid article::before {
  display: none;
}

.scenario-image {
  width: 100%;
  height: 132px;
  background-image: var(--bg);
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(43, 157, 255, 0.2);
}

.scenario-body {
  padding: 18px;
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 34px;
  margin-bottom: 34px;
  border: 1px solid rgba(43, 157, 255, 0.3);
  border-radius: 8px;
  background:
    radial-gradient(circle at 82% 22%, rgba(255, 72, 88, 0.22), transparent 25%),
    linear-gradient(135deg, rgba(11, 42, 82, 0.9), rgba(3, 13, 30, 0.94));
}

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

.case-grid article {
  position: relative;
  display: grid;
  grid-template-columns: 210px 1fr;
  min-height: 210px;
  overflow: hidden;
  border: 1px solid rgba(43, 157, 255, 0.24);
  border-radius: 8px;
  background: rgba(5, 20, 42, 0.74);
  transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}
.case-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-grid div { padding: 24px; }
.case-grid span { color: var(--cyan); font-weight: 900; }

.flow-grid {
  grid-template-columns: repeat(4, 1fr);
}

.flow-grid article {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  align-items: center;
}

.flow-grid article h3 {
  margin: 0;
  white-space: nowrap;
}

.flow-grid article p {
  grid-column: 1 / -1;
  margin-top: 16px;
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.faq-list details { padding: 0; overflow: hidden; }
.faq-list summary {
  cursor: pointer;
  padding: 18px 22px;
  font-size: 18px;
  font-weight: 900;
}
.faq-list p {
  margin: 0;
  padding: 0 22px 20px;
}

.float-contact {
  position: fixed;
  right: 16px;
  top: 44%;
  z-index: 60;
  display: grid;
  gap: 10px;
}

.float-item {
  width: 86px;
  min-height: 92px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 18px 0 0 18px;
  border: 1px solid rgba(43, 157, 255, 0.3);
  background: rgba(248, 252, 255, 0.96);
  color: #0878ff;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.25);
}
.float-item span {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #0878ff;
  color: #fff;
  font-weight: 1000;
  font-size: 13px;
}
.float-item b { font-size: 15px; line-height: 1.25; text-align: center; }

.site-footer {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 34px;
  padding: 56px clamp(18px, 4vw, 76px);
  border-top: 1px solid rgba(43, 157, 255, 0.18);
  background: #020914;
}
.site-footer .brand { margin-bottom: 16px; }
.site-footer h3 { margin: 0 0 16px; font-size: 20px; }
.site-footer a {
  display: block;
  color: #bfd3ef;
  margin: 10px 0;
}
.footer-contact a { display: inline; }

.service-page {
  min-height: calc(100vh - 82px);
  display: grid;
  place-items: center;
  padding: 80px clamp(18px, 4vw, 76px);
  background:
    linear-gradient(90deg, rgba(2, 9, 20, 0.92), rgba(2, 13, 30, 0.72)),
    url("./assets/hero-japan-alpha3.png") right center / min(980px, 75vw) auto no-repeat;
}

.service-hero {
  width: min(780px, 100%);
  margin-right: auto;
  padding: 42px;
  border: 1px solid rgba(43, 157, 255, 0.28);
  border-radius: 8px;
  background: rgba(4, 16, 36, 0.78);
  box-shadow: var(--shadow);
}

.service-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(42px, 5vw, 68px);
  line-height: 1.05;
}

.service-hero p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

@media (max-width: 1180px) {
  .main-nav { display: none; }
  .site-header { justify-content: space-between; }
  .hero-inner { min-height: 650px; }
  .hero-copy { max-width: 100%; }
  .hero-visual {
    left: 0;
    right: 0;
    top: 280px;
    bottom: 76px;
    opacity: 0.55;
  }
  .hero-visual img { width: 100%; }
  .monitor-card { right: 24px; top: 136px; }
  .hero-points,
  .hero-stats,
  .plan-grid,
  .why-grid,
  .flow-grid,
  .site-footer { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(3, 1fr); }
  .network-layout { grid-template-columns: 1fr; }
  .network-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .network-layout { grid-template-columns: 1fr; }
}

@media (min-width: 1181px) {
  .hero h1 { white-space: nowrap; }
}

@media (max-width: 720px) {
  .site-header { height: 70px; padding: 0 14px; }
  .brand { font-size: 20px; }
  .brand-mark { width: 28px; height: 28px; }
  .header-cta { min-height: 44px; padding: 0 16px; font-size: 15px; }
  .hero { min-height: 0; }
  .hero-inner { padding-top: 54px; }
  .hero h1 {
    max-width: 8em;
    font-size: 42px;
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .hero-lead { font-size: 20px; }
  .hero-actions .btn { width: 100%; }
  .hero-points,
  .hero-stats,
  .plan-grid,
  .why-grid,
  .scenario-grid,
  .network-feature-grid,
  .case-grid,
  .flow-grid,
  .faq-list,
  .site-footer { grid-template-columns: 1fr; }
  .network-diagram { min-height: 520px; }
  .route-card { width: 148px; }
  .route-card::before { display: none; }
  .hero-visual {
    top: 390px;
    bottom: 130px;
    opacity: 0.5;
  }
  .hero-visual img { width: 130vw; }
  .monitor-card {
    width: 252px;
    top: 110px;
    right: 0;
    padding: 16px;
  }
  .monitor-card strong { font-size: 27px; }
  .bars { height: 80px; gap: 9px; }
  .bars i { width: 12px; }
  .section,
  .network-section,
  .service-section,
  .cta-band { padding-top: 58px; padding-bottom: 58px; }
  .section-head,
  .cta-band { display: block; }
  .section-head a { display: inline-flex; margin-top: 16px; }
  .plan-card h3 { max-width: 72%; }
  .case-grid article { grid-template-columns: 1fr; }
  .case-grid img { height: 210px; }
  .network-map { min-height: 360px; }
  .float-contact { right: 0; transform: scale(.88); transform-origin: right center; }
  .service-page { min-height: calc(100vh - 70px); background-size: 135vw auto; }
  .service-hero { padding: 26px; }
}