:root {
  color-scheme: light;
  --ink: #122033;
  --muted: #5d7088;
  --line: #d7e2ee;
  --paper: #edf4f8;
  --panel: rgba(255, 255, 255, 0.88);
  --brand: #027ea2;
  --brand-strong: #005f7d;
  --accent: #16b78f;
  --warning: #f59e0b;
  --shadow: 0 24px 70px rgba(26, 45, 69, 0.18);
  font-family: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(7, 126, 162, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(7, 126, 162, 0.08) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
}

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

button {
  font: inherit;
}

.hero-section {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 720px) minmax(320px, 1fr);
  align-items: center;
  gap: clamp(24px, 5vw, 80px);
  padding: clamp(38px, 8vh, 88px) clamp(22px, 7vw, 110px);
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 12% 26%, rgba(22, 183, 143, 0.15), transparent 26%),
    radial-gradient(circle at 82% 20%, rgba(2, 126, 162, 0.15), transparent 28%),
    linear-gradient(90deg, rgba(237, 244, 248, 0.98) 0%, rgba(237, 244, 248, 0.86) 46%, rgba(237, 244, 248, 0.48) 100%);
}

.product-background {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.product-background img {
  position: absolute;
  right: -6vw;
  top: 9vh;
  width: min(1040px, 68vw);
  max-width: none;
  opacity: 0.34;
  filter: saturate(0.72) brightness(0.92) blur(1.5px);
  transform: rotate(-2deg);
  border-radius: 30px;
  box-shadow: 0 34px 90px rgba(26, 45, 69, 0.16);
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.hero-title-lockup {
  position: relative;
  width: fit-content;
  max-width: 820px;
}

.brand-lockup {
  position: absolute;
  right: clamp(18px, 6vw, 136px);
  top: clamp(-74px, -5vw, -44px);
  z-index: 2;
  display: grid;
  place-items: center;
  padding: 14px;
  transform: rotate(-4deg);
  border: 1px solid rgba(190, 209, 226, 0.78);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 20px 54px rgba(24, 42, 61, 0.12);
  backdrop-filter: blur(14px);
}

.brand-lockup::before {
  content: "";
  position: absolute;
  inset: -18px;
  z-index: -1;
  border-radius: 32px;
  background:
    radial-gradient(circle at 30% 25%, rgba(22, 183, 143, 0.28), transparent 42%),
    radial-gradient(circle at 76% 72%, rgba(2, 126, 162, 0.2), transparent 48%);
  filter: blur(4px);
  opacity: 0.9;
}

.brand-lockup img {
  width: 48px;
  height: 48px;
  border-radius: 15px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(46px, 6.2vw, 88px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(32px, 4vw, 58px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 24px;
}

.hero-copy,
.guide-heading p,
.guide-text p {
  color: var(--muted);
  line-height: 1.82;
}

.hero-copy {
  max-width: 700px;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 15px;
  font-weight: 900;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.primary-button {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 14px 34px rgba(2, 126, 162, 0.28);
}

.primary-button:hover {
  transform: translateY(-2px);
  background: var(--brand-strong);
}

.primary-button.clicked {
  transform: translateY(0) scale(0.98);
}

.primary-button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.56;
  box-shadow: none;
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.hero-panel {
  align-self: center;
  justify-self: end;
  width: min(430px, 100%);
  padding: 24px;
  border: 1px solid rgba(190, 209, 226, 0.9);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  transform: rotate(-2deg);
}

.panel-title {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.panel-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 30px;
}

.panel-status span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
}

.panel-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 22px;
}

.panel-metrics div,
.guide-card,
.guide-visual {
  border: 1px solid rgba(190, 209, 226, 0.88);
  background: rgba(255, 255, 255, 0.84);
}

.panel-metrics div {
  padding: 12px;
  border-radius: 14px;
}

.panel-metrics small {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.panel-metrics b {
  display: block;
  margin-top: 4px;
  font-size: 15px;
}

.guide-section {
  position: relative;
  padding: 84px clamp(22px, 7vw, 110px) 100px;
}

.guide-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.guide-heading p {
  max-width: 640px;
  font-size: 18px;
}

.guide-list {
  display: grid;
  gap: 18px;
}

.guide-card {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) minmax(300px, 420px);
  align-items: center;
  gap: 24px;
  min-height: 190px;
  padding: 24px;
  border-radius: 28px;
  box-shadow: 0 18px 56px rgba(24, 42, 61, 0.08);
}

.guide-number {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border-radius: 20px;
  color: var(--brand);
  background: #e8f6f9;
  font-size: 22px;
  font-weight: 900;
}

.guide-visual {
  min-height: 132px;
  border-radius: 20px;
  padding: 18px;
}

.download-visual {
  display: grid;
  gap: 12px;
  align-content: center;
}

.download-visual span {
  color: var(--muted);
  font-weight: 800;
}

.download-visual a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  border-radius: 13px;
  color: #fff;
  background: var(--brand);
  font-weight: 900;
}

.download-visual a[aria-disabled="true"] {
  color: var(--muted);
  background: #edf4f8;
}

.lobby-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.lobby-visual div,
.room-visual div {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f7fbfd;
  padding: 14px;
}

.lobby-visual button,
.connect-visual button {
  width: 100%;
  margin-top: 16px;
  min-height: 38px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: var(--brand);
  font-weight: 900;
}

.room-visual {
  display: grid;
  gap: 10px;
}

.room-visual div {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 10px;
  padding-block: 11px;
}

.room-visual em {
  color: var(--brand);
  font-style: normal;
  font-size: 12px;
  font-weight: 900;
}

.dot {
  width: 24px;
  height: 24px;
  border-radius: 10px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.38) 25%, transparent 0 50%, rgba(255, 255, 255, 0.38) 0 75%, transparent 0),
    currentColor;
  background-size: 8px 8px;
}

.dot.online { color: #ef476f; }
.dot.relay { color: #a9e34b; }
.dot.p2p { color: #42a5f5; }

.connect-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-content: center;
}

.connect-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
}

.connect-row span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
}

.connect-visual button {
  margin-top: 0;
  color: var(--ink);
  background: #f7fbfd;
  border: 1px solid var(--line);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(22px, 7vw, 110px);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 1100px) {
  .hero-section {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    justify-self: start;
    transform: none;
  }

  .product-background img {
    right: -22vw;
    width: 980px;
    opacity: 0.2;
  }

  .guide-card {
    grid-template-columns: 72px 1fr;
  }

  .guide-visual {
    grid-column: 2;
  }
}

@media (max-width: 700px) {
  .hero-section {
    min-height: auto;
    padding: 36px 18px 70px;
  }

  .product-background {
    display: none;
  }

  .brand-lockup {
    right: 6px;
    top: -58px;
    padding: 10px;
    border-radius: 18px;
  }

  .brand-lockup img {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  h1 {
    font-size: 44px;
  }

  .hero-copy,
  .guide-heading p,
  .guide-text p {
    font-size: 15px;
  }

  .hero-panel {
    display: none;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .guide-section {
    padding: 66px 18px 74px;
  }

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

  .guide-visual {
    grid-column: auto;
  }

  .lobby-visual,
  .connect-visual {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    padding-inline: 18px;
  }
}