:root {
  --bg: #0a261f;
  --bg-2: #07201a;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --muted-2: rgba(255, 255, 255, 0.6);
  --gold: #f2b800;
  --gold-2: #ffbf2f;
  --mint: #2dd4bf;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.42);
  --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.34);
  --ring: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 0 0 6px rgba(242, 184, 0, 0.14);
  --radius: 18px;
  --radius-sm: 14px;
  --container: 1120px;
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

html {
  scroll-behavior: smooth;
  background: radial-gradient(1000px 800px at 70% 10%, rgba(45, 212, 191, 0.13), transparent 60%),
    radial-gradient(900px 700px at 18% 20%, rgba(242, 184, 0, 0.18), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, #071a15 100%);
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  overflow-x: hidden;
}

body.is-modal-open {
  overflow: hidden;
}

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

:focus-visible {
  outline: 2px solid rgba(242, 184, 0, 0.85);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--container);
  padding: 0 20px;
  margin: 0 auto;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E");
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(8, 27, 22, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand.compact {
  font-size: 18px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(180deg, rgba(45, 212, 191, 0.94), rgba(45, 212, 191, 0.62));
  color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 22px rgba(45, 212, 191, 0.22);
}

.brand-text {
  font-size: 18px;
}

.nav {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-link {
  font-size: 14px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-link:hover {
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.07);
}

.nav-link.is-active {
  color: rgba(255, 255, 255, 0.94);
  background: rgba(242, 184, 0, 0.14);
  box-shadow: 0 0 0 1px rgba(242, 184, 0, 0.2) inset;
}

.topbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.topbar-support {
  display: none;
}

.lang {
  position: relative;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 800;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.lang-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-1px);
}

.lang-btn-label {
  font-size: 13px;
  white-space: nowrap;
}

.lang-caret {
  font-size: 12px;
  opacity: 0.9;
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 140px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(8, 27, 22, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.lang-item {
  width: 100%;
  text-align: left;
  padding: 10px 10px;
  border-radius: 12px;
  background: transparent;
  border: 0;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 700;
  cursor: pointer;
  font-family: var(--sans);
}

.lang-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 700;
  letter-spacing: 0.2px;
  border: 1px solid transparent;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease,
    color 160ms ease;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  color: #0d1a16;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  box-shadow: 0 14px 30px rgba(242, 184, 0, 0.22), 0 6px 12px rgba(0, 0, 0, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 16px 38px rgba(242, 184, 0, 0.26), 0 8px 18px rgba(0, 0, 0, 0.32);
  transform: translateY(-1px);
}

.btn-ghost {
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-1px);
}

.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 160ms ease, transform 160ms ease;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-1px);
}

.burger {
  width: 18px;
  height: 12px;
  position: relative;
}

.burger::before,
.burger::after,
.burger span {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.84);
}

.burger::before {
  top: 0;
}

.burger::after {
  bottom: 0;
}

.burger span {
  top: 50%;
  transform: translateY(-50%);
}

.mobile-menu {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 27, 22, 0.9);
}

.mobile-menu-inner {
  padding: 14px 0 18px;
  display: grid;
  gap: 10px;
}

.mobile-link {
  padding: 14px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
}

.hero {
  position: relative;
  padding: 54px 0 32px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/static/banner_1_bg.png") center / cover no-repeat;
  opacity: 0.26;
  filter: saturate(1.05) contrast(1.05);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(900px 700px at 80% 10%, rgba(45, 212, 191, 0.14), transparent 60%),
    radial-gradient(900px 700px at 15% 20%, rgba(242, 184, 0, 0.16), transparent 55%),
    linear-gradient(180deg, rgba(7, 26, 21, 0.22), rgba(7, 26, 21, 0.62));
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-copy {
  width: 100%;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.84);
  font-weight: 700;
  font-size: 13px;
}

.trust-badge.subtle {
  background: rgba(0, 0, 0, 0.16);
}

.trust-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(242, 184, 0, 0.18);
}

.trust-dot.alt {
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(45, 212, 191, 0.16);
}

.hero-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(42px, 6vw, 74px);
  line-height: 1.02;
  letter-spacing: -0.8px;
  white-space: nowrap;
  word-break: keep-all;
}

.hero-title-en {
  color: rgba(255, 255, 255, 0.94);
}

.hero-title-cn {
  color: var(--gold);
  margin-left: 10px;
  text-shadow: 0 18px 48px rgba(242, 184, 0, 0.22);
}

.hero-subtitle {
  margin: 16px 0 0;
  font-size: clamp(24px, 3.3vw, 46px);
  font-weight: 900;
  letter-spacing: -0.3px;
}

.hero-tagline {
  margin: 14px 0 0;
  color: var(--muted);
  font-weight: 600;
  font-size: 16px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.hero-notes {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.hero-slogan-row {
  display: none;
  margin: 10px 0 0;
}

.hero-slogan {
  display: block;
  width: min(320px, 60vw);
  max-width: 100%;
  height: auto;
}

.hero-media {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 22px;
}

.hero-phone-frame {
  width: clamp(280px, 40vw, 440px);
  border-radius: 28px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.hero-phone {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(620px, calc(100vh - 220px));
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
}

.note {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.22);
}

.note-k {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: rgba(255, 255, 255, 0.82);
}

.note-v {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.74);
  font-weight: 600;
}

.qr-card {
  position: relative;
  border-radius: 26px;
  padding: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.qr-card::before {
  content: "";
  position: absolute;
  inset: -30% -30% auto -30%;
  height: 240px;
  background: radial-gradient(circle at 30% 30%, rgba(45, 212, 191, 0.22), transparent 60%),
    radial-gradient(circle at 70% 10%, rgba(242, 184, 0, 0.26), transparent 55%);
  filter: blur(0px);
  opacity: 0.9;
}

.qr-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.qr-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-weight: 800;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
}

.qr-arrow {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.qr-code {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 18px;
  background: linear-gradient(0deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.95));
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.qr-code::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 12px;
  background: repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.78) 0 6px, rgba(0, 0, 0, 0) 6px 10px),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.74) 0 6px, rgba(0, 0, 0, 0) 6px 10px);
  mix-blend-mode: multiply;
  opacity: 0.18;
}

.qr-code::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.14), transparent 60%);
}

.qr-text {
  position: relative;
  margin-top: 12px;
  text-align: center;
  color: rgba(255, 255, 255, 0.86);
}

.qr-line {
  font-weight: 700;
  font-size: 13px;
}

.qr-em {
  margin: 8px 0;
  font-weight: 900;
  font-size: 24px;
  color: var(--gold);
}

.hero-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.card-silhouette {
  position: absolute;
  left: -120px;
  top: 90px;
  width: 420px;
  height: 560px;
  border-radius: 42px;
  transform: rotate(-14deg);
  background: radial-gradient(140px 160px at 40% 30%, rgba(45, 212, 191, 0.16), transparent 65%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.glow {
  position: absolute;
  right: -220px;
  top: -160px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 30% 30%, rgba(242, 184, 0, 0.24), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(45, 212, 191, 0.2), transparent 55%);
  filter: blur(18px);
}

.section {
  padding: 64px 0;
  position: relative;
}

.section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
}

.section.alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
}

.section-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 26px;
  align-items: center;
}

.section-head {
  max-width: 780px;
  margin-bottom: 22px;
}

.section-title {
  margin: 0;
  font-family: var(--serif);
  font-size: 34px;
  letter-spacing: -0.4px;
}

.section-lead {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.8;
  font-weight: 500;
}

.bullets {
  margin: 18px 0 0;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.9;
  font-weight: 600;
}

.section-visual {
  display: flex;
  justify-content: center;
}

.visual-frame {
  width: min(420px, 100%);
  border-radius: 28px;
  padding: 26px 22px;
  background: radial-gradient(240px 220px at 30% 20%, rgba(242, 184, 0, 0.22), transparent 60%),
    radial-gradient(260px 260px at 70% 70%, rgba(45, 212, 191, 0.18), transparent 55%),
    rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.visual-title {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.visual-sub {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 600;
}

.visual-suits {
  margin-top: 18px;
  font-size: 32px;
  display: flex;
  gap: 12px;
}

.visual-suits span:nth-child(2) {
  color: rgba(255, 77, 109, 0.92);
}

.visual-suits span:nth-child(3) {
  color: rgba(255, 151, 58, 0.9);
}

.visual-suits span:nth-child(4) {
  color: rgba(96, 165, 250, 0.9);
}

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

.platform-card {
  padding: 18px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

.platform-icon {
  font-size: 22px;
}

.platform-name {
  margin-top: 10px;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.platform-desc {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 600;
  line-height: 1.6;
  font-size: 13px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.feature-card {
  position: relative;
  border-radius: 22px;
  padding: 18px 16px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.26);
  transition: transform 170ms ease, box-shadow 170ms ease, border-color 170ms ease;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: -60% -30% auto -30%;
  height: 220px;
  background: radial-gradient(circle at 50% 40%, rgba(242, 184, 0, 0.18), transparent 62%),
    radial-gradient(circle at 25% 20%, rgba(45, 212, 191, 0.14), transparent 60%);
  opacity: 0.8;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(242, 184, 0, 0.32);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
}

.feature-icon {
  position: relative;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 18px;
}

.feature-name {
  position: relative;
  margin-top: 14px;
  font-weight: 900;
  letter-spacing: 0.2px;
  font-size: 16px;
}

.feature-desc {
  position: relative;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  line-height: 1.65;
  font-size: 13px;
  min-height: 44px;
}

.feature-action {
  position: relative;
  margin-top: 14px;
  width: 100%;
}

.feature-action .btn {
  width: 100%;
  padding: 11px 14px;
}

.faq {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.faq-item {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 16px 16px;
  font-weight: 900;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--sans);
}

.faq-q:hover {
  background: rgba(255, 255, 255, 0.04);
}

.faq-chevron {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 160ms ease;
}

.faq-item[data-open="true"] .faq-chevron {
  transform: rotate(90deg);
}

.faq-a {
  padding: 0 16px 16px;
  color: rgba(255, 255, 255, 0.74);
  line-height: 1.75;
  font-weight: 600;
  display: none;
}

.faq-item[data-open="true"] .faq-a {
  display: block;
}

.footer {
  padding: 28px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.16);
}

.contact-float {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  display: grid;
  justify-items: end;
  gap: 12px;
}

.contact-backdrop {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.contact-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.contact-float-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid rgba(242, 184, 0, 0.22);
  background: linear-gradient(180deg, rgba(242, 184, 0, 0.94), rgba(242, 184, 0, 0.72));
  color: #0b1915;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.34);
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

.contact-float-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.4);
  filter: brightness(1.02);
}

.contact-float-icon {
  width: 34px;
  height: 34px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid rgba(0, 0, 0, 0.16);
}

.contact-float-label {
  font-size: 14px;
  letter-spacing: 0.3px;
}

.contact-float-panel {
  position: fixed;
  left: 50%;
  right: auto;
  bottom: 12px;
  width: min(420px, calc(100vw - 24px));
  max-width: 520px;
  margin: 0 auto;
  border-radius: 22px 22px 18px 18px;
  padding: 14px 14px calc(14px + env(safe-area-inset-bottom, 0px));
  background: rgba(8, 27, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  transform-origin: 50% 100%;
  transform: translate(-50%, 110%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 220ms cubic-bezier(0.2, 0.9, 0.22, 1);
}

.contact-float[data-open="true"] .contact-float-panel {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.contact-float[data-open="true"] .contact-float-btn {
  opacity: 0;
  pointer-events: none;
}

.contact-float-handle {
  width: 44px;
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.22);
  margin: 2px auto 10px;
}

.contact-float-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.contact-float-panel-title {
  font-family: var(--serif);
  font-weight: 900;
  letter-spacing: -0.2px;
  font-size: 18px;
}

.contact-float-close {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.contact-float-close:hover {
  background: rgba(255, 255, 255, 0.06);
}

.contact-float-panel-sub {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 700;
  font-size: 13px;
}

.contact-float-qr-card {
  margin-top: 12px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 14px;
}

.contact-float-qr-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: none;
}

.contact-float-hint {
  color: rgba(0, 0, 0, 0.72);
  font-weight: 600;
  line-height: 1.6;
  font-size: 13px;
}

.contact-float-actions {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.contact-float-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.contact-float-row-copy {
  min-width: 0;
}

.contact-float-row-k {
  color: rgba(255, 255, 255, 0.66);
  font-weight: 700;
  font-size: 12px;
}

.contact-float-row-v {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-float-row-em {
  font-size: 14px;
  font-weight: 900;
}

.contact-float-id {
  display: flex;
  gap: 6px;
  align-items: baseline;
  min-width: 0;
}

.contact-float-id-k {
  color: rgba(255, 255, 255, 0.66);
  font-weight: 700;
  font-size: 12px;
}

.contact-float-id-v {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.2px;
}

.contact-float-copy {
  padding: 10px 12px;
  border-radius: 14px;
}

.contact-float-copy:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.contact-float-toast {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 700;
  font-size: 12px;
  text-align: center;
  padding: 8px 10px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-float-panel-foot {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.66);
  font-weight: 600;
  font-size: 12px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
}

.footer-note {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  justify-content: center;
}

.footer-links a {
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.82);
  font-weight: 700;
  font-size: 13px;
}

.footer-links a:hover {
  background: rgba(255, 255, 255, 0.06);
}

.footer-meta {
  text-align: right;
  color: rgba(255, 255, 255, 0.66);
  font-weight: 600;
  line-height: 1.6;
  font-size: 13px;
  display: grid;
  justify-items: end;
  gap: 6px;
}

.backtop {
  display: inline-block;
  color: rgba(255, 255, 255, 0.86);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
  font-weight: 700;
}

.breadcrumb a:hover {
  color: rgba(255, 255, 255, 0.92);
}

.page-hero {
  position: relative;
  padding: 68px 0 34px;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(900px 600px at 82% 18%, rgba(45, 212, 191, 0.14), transparent 60%),
    radial-gradient(900px 680px at 10% 10%, rgba(242, 184, 0, 0.14), transparent 55%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.84);
  font-size: 13px;
  font-weight: 800;
}

.page-title {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.page-lead {
  max-width: 860px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
  line-height: 1.9;
  font-weight: 600;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

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

.content-card,
.topic-card {
  border-radius: 22px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: var(--shadow-soft);
}

.content-card h2,
.topic-card h3 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.3;
}

.content-card p,
.topic-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
  line-height: 1.85;
  font-weight: 600;
}

.page-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.9;
  font-weight: 600;
}

.page-list li + li {
  margin-top: 8px;
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.inline-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 800;
  font-size: 14px;
}

.inline-links a:hover {
  background: rgba(255, 255, 255, 0.08);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.topic-card {
  display: grid;
  gap: 14px;
}

.topic-card p {
  min-height: 72px;
}

.topic-card .btn {
  justify-self: start;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (max-width: 899px) {
  .topbar-inner {
    gap: 10px;
  }

  .brand-text {
    font-size: 16px;
  }

  .topbar-actions {
    gap: 8px;
    flex-wrap: nowrap;
  }

  .nav {
    display: none;
  }

  .topbar-download {
    display: none;
  }

  .topbar-support {
    display: inline-flex;
    height: 44px;
    padding: 0 12px;
    font-size: 13px;
    white-space: nowrap;
  }

  .lang-btn-label {
    display: none;
  }

  .lang-btn {
    width: 44px;
    padding: 0;
    justify-content: center;
  }

  .lang-btn::before {
    content: "文";
    font-weight: 900;
    font-size: 14px;
    letter-spacing: 0;
  }

  .hero {
    padding: 46px 0 26px;
  }

  .hero::before {
    background: url("/static/banner_1_bg_mobile.png") center / cover no-repeat;
    opacity: 0.26;
  }

  .hero::after {
    background: radial-gradient(900px 700px at 80% 10%, rgba(45, 212, 191, 0.12), transparent 60%),
      radial-gradient(900px 700px at 15% 20%, rgba(242, 184, 0, 0.12), transparent 55%),
      linear-gradient(90deg, rgba(7, 26, 21, 0.78), rgba(7, 26, 21, 0.54) 58%, rgba(7, 26, 21, 0.38));
  }

  .hero-grid {
    grid-template-columns: 1fr auto;
    gap: 16px;
    align-items: start;
  }

  .hero-copy {
    display: contents;
  }

  .hero-media {
    margin-top: 0;
    justify-content: flex-end;
    align-items: flex-start;
    align-self: center;
    grid-column: 2 / 3;
    grid-row: 2;
  }

  .hero-title,
  .hero-subtitle,
  .hero-tagline {
    display: block;
    grid-column: 1 / -1;
    text-align: left;
  }

  .hero-title {
    margin-top: 12px;
    font-size: clamp(30px, 8vw, 42px);
    line-height: 1.12;
  }

  .hero-subtitle {
    margin-top: 10px;
    font-size: 17px;
  }

  .hero-tagline {
    margin-top: 8px;
    font-size: 13px;
    line-height: 1.75;
  }

  .trust-row {
    grid-column: 1 / -1;
    grid-row: 1;
    margin-bottom: 10px;
  }

  .trust-badge {
    padding: 8px 10px;
    font-size: 12px;
  }

  .trust-badge.subtle {
    display: none;
  }

  .hero-slogan-row {
    display: block;
    margin-top: 6px;
    grid-column: 1 / 2;
    grid-row: 2;
    align-self: center;
  }

  .hero-slogan {
    width: min(300px, 64vw);
  }

  .cta {
    grid-column: 1 / -1;
    grid-row: 6;
    margin-top: 14px;
  }

  .hero-notes {
    grid-column: 1 / -1;
    grid-row: 7;
    margin-top: 14px;
    gap: 10px;
    grid-template-columns: 1fr;
  }

  .hero-phone-frame {
    width: clamp(180px, 38vw, 270px);
  }

  .hero-phone {
    max-height: min(520px, calc(100vh - 280px));
  }

  .cta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .cta .btn {
    width: 100%;
    min-height: 44px;
    padding: 12px 10px;
    font-size: 13px;
    gap: 8px;
    white-space: nowrap;
  }

  .note {
    padding: 12px 12px;
    box-shadow: none;
  }

  .note-k {
    font-size: 11px;
  }

  .note-v {
    font-size: 13px;
  }

  .section-grid {
    grid-template-columns: 1fr;
  }

  .page-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 44px 0 20px;
  }

  .page-title {
    font-size: clamp(28px, 8vw, 40px);
  }

  .page-lead {
    font-size: 15px;
    line-height: 1.8;
  }

  .page-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: left;
    align-items: start;
  }

  .footer-meta {
    text-align: left;
    justify-items: start;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (min-width: 900px) {
  .contact-float-panel {
    left: 50%;
    right: auto;
    top: 50%;
    bottom: auto;
    width: min(480px, calc(100vw - 48px));
    border-radius: 24px;
    padding: 18px 22px;
    max-height: calc(100vh - 96px);
    overflow: auto;
    transform: translate(-50%, calc(-50% + 16px));
  }

  .contact-float[data-open="true"] .contact-float-panel {
    transform: translate(-50%, -50%);
  }

  .contact-float-panel-top {
    position: relative;
    justify-content: center;
    padding-right: 44px;
  }

  .contact-float-panel-title {
    width: 100%;
    text-align: center;
  }

  .contact-float-close {
    position: absolute;
    right: 0;
    top: 0;
  }

  .contact-float-handle {
    display: none;
  }

  .contact-float-qr-card {
    max-width: 310px;
    margin-left: auto;
    margin-right: auto;
    padding: 14px;
  }

  .contact-float-actions {
    max-width: 310px;
    margin-left: auto;
    margin-right: auto;
  }

  .contact-float-row-k {
    font-size: 14px;
  }

  .contact-float-row-v {
    font-size: 16px;
  }

  .contact-float-row-em {
    font-size: 17px;
  }

  .contact-float-toast {
    max-width: 310px;
    margin-left: auto;
    margin-right: auto;
  }

  .contact-float-copy {
    min-width: 110px;
  }

  .topbar-actions .icon-btn {
    display: none;
  }

  .topbar-support {
    display: none;
  }

  .hero {
    padding: 84px 0 64px;
    min-height: 760px;
    display: flex;
    align-items: center;
  }

  .hero-copy {
    max-width: 640px;
  }

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

  .hero::before {
    opacity: 0.58;
    background-position: center top;
  }

  .hero::after {
    background: radial-gradient(900px 700px at 80% 10%, rgba(45, 212, 191, 0.12), transparent 60%),
      radial-gradient(900px 700px at 15% 20%, rgba(242, 184, 0, 0.14), transparent 55%),
      linear-gradient(180deg, rgba(7, 26, 21, 0.14), rgba(7, 26, 21, 0.48));
  }

  .hero-media {
    justify-content: flex-end;
    margin-top: 0;
    align-self: stretch;
  }

  .hero-phone-frame {
    width: clamp(360px, 30vw, 520px);
    padding: 0;
  }

  .hero-phone {
    max-height: min(760px, calc(100vh - 160px));
  }
}

@media (max-width: 899px) {
  .contact-float-panel {
    left: 20vw;
    right: 20vw;
    width: auto;
    max-height: 74vh;
    overflow: auto;
    padding: 14px 14px calc(14px + env(safe-area-inset-bottom, 0px));
    bottom: 18px;
    transform: translateY(110%);
  }

  .contact-float[data-open="true"] .contact-float-panel {
    transform: translateY(0);
  }

  .contact-float-panel-top {
    position: relative;
    justify-content: center;
    padding-right: 44px;
  }

  .contact-float-panel-title {
    width: 100%;
    text-align: center;
  }

  .contact-float-close {
    position: absolute;
    right: 0;
    top: 0;
  }

  .contact-float-qr-card {
    max-width: 255px;
    margin-left: auto;
    margin-right: auto;
    padding: 10px;
  }

  .contact-float-qr-card + .contact-float-actions {
    margin-top: 16px;
  }

  .contact-float-actions {
    max-width: 255px;
    margin-left: auto;
    margin-right: auto;
    gap: 10px;
  }

  .contact-float-row:nth-child(2) {
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .contact-float-row:nth-child(3) {
    margin-top: 4px;
  }

  .contact-float-row-k {
    font-size: 12px;
  }

  .contact-float-row-v {
    font-size: 14px;
  }

  .contact-float-row-em {
    font-size: 15px;
  }

  .contact-float-copy {
    min-height: 34px;
    padding: 8px 8px;
    border-radius: 12px;
    font-size: 12px;
    min-width: 78px;
  }

  .contact-float-toast {
    max-width: 255px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 520px) {
  .contact-float {
    right: 14px;
    bottom: 84px;
  }

  .contact-float-btn {
    padding: 12px 12px;
  }

  .contact-float-label {
    display: none;
  }

  .cta .btn {
    min-height: 42px;
    padding: 11px 8px;
    font-size: 12px;
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 380px) {
  .topbar-support {
    padding: 0 10px;
    font-size: 12px;
  }
}

@media (max-width: 340px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-media {
    justify-content: center;
    margin-top: 18px;
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .hero-slogan-row {
    grid-column: 1 / -1;
    grid-row: 1;
  }
}