:root {
  --bg: #070b13;
  --bg-soft: #0b1220;
  --surface: rgba(12, 19, 33, 0.72);
  --surface-strong: rgba(13, 21, 36, 0.88);
  --surface-bright: rgba(19, 30, 49, 0.92);
  --text: #f6f2ea;
  --muted: #b9c2d5;
  --gold: #f2c47f;
  --gold-strong: #dba45d;
  --line: rgba(255, 226, 184, 0.18);
  --cyan: #9bd9ff;
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 14% 16%, rgba(242, 196, 127, 0.24), transparent 30%),
    radial-gradient(circle at 86% 12%, rgba(155, 217, 255, 0.16), transparent 26%),
    radial-gradient(circle at 50% 0%, rgba(255, 232, 197, 0.08), transparent 24%),
    linear-gradient(180deg, #090d16 0%, #05070d 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 90%);
  opacity: 0.4;
}

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

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

code {
  font-family: "Consolas", "SFMono-Regular", monospace;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 44px;
}

.bubble-layer,
.cursor-aura {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.bubble-layer {
  overflow: hidden;
  z-index: 0;
}

.cursor-aura {
  top: 0;
  left: 0;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(155, 217, 255, 0.16), rgba(242, 196, 127, 0.08) 42%, transparent 74%);
  filter: blur(10px);
  opacity: 0;
  transform: translate(-999px, -999px);
  transition:
    opacity 180ms ease,
    transform 120ms linear;
  mix-blend-mode: screen;
  z-index: 0;
}

.cursor-aura.is-visible {
  opacity: 1;
}

.bubble {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.36) 28%, rgba(155, 217, 255, 0.16) 64%, transparent 74%);
  box-shadow:
    inset 0 1px 5px rgba(255, 255, 255, 0.16),
    0 0 18px rgba(155, 217, 255, 0.08);
  animation: bubble-float 1.25s ease-out forwards;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: sticky;
  top: 14px;
  z-index: 6;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 22px;
  background: rgba(7, 11, 19, 0.62);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 8px 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(255, 232, 197, 0.95), rgba(219, 164, 93, 0.85));
  color: #10141f;
  font-family: "Iowan Old Style", "Palatino Linotype", "STSong", serif;
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(219, 164, 93, 0.18);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.brand-copy small,
.topbar-link {
  color: var(--muted);
}

.topbar-link {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease;
}

.topbar-link:hover {
  transform: translateY(-1px);
  color: var(--text);
  border-color: rgba(255, 226, 184, 0.32);
  background: rgba(255, 255, 255, 0.05);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 28px;
  align-items: center;
  padding: 56px 0 22px;
}

.hero-copy,
.hero-panel,
.downloads-section,
.assurance {
  animation: reveal 760ms ease both;
}

.hero-panel {
  animation-delay: 90ms;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "STSong", serif;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5.2rem);
  line-height: 0.96;
  max-width: 760px;
  text-wrap: balance;
}

.hero-lead {
  margin: 22px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.button,
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

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

.button-primary,
.download-button {
  color: #141a25;
  background: linear-gradient(135deg, #ffe0b1, #dca35f);
  box-shadow: 0 18px 36px rgba(220, 163, 95, 0.24);
}

.button-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.button-secondary:hover {
  border-color: rgba(255, 226, 184, 0.32);
  background: rgba(255, 255, 255, 0.06);
}

.button-outline {
  color: var(--text);
  border: 1px solid rgba(255, 226, 184, 0.16);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.button-outline:hover {
  border-color: rgba(255, 226, 184, 0.32);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
}

.button-split {
  align-items: flex-start;
  min-height: 78px;
  padding: 18px 22px;
  flex-direction: column;
  border-radius: 24px;
  text-align: left;
}

.button-split span {
  font-size: 1rem;
  line-height: 1.3;
}

.button-split small {
  margin-top: 5px;
  font-size: 0.84rem;
  letter-spacing: 0.02em;
}

.button-primary.button-split small {
  color: rgba(20, 26, 37, 0.76);
}

.button-outline.button-split small {
  color: #d6deef;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-points span {
  padding: 12px 16px;
  border: 1px solid rgba(255, 226, 184, 0.1);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.025));
  color: #d6deef;
  font-size: 0.92rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(255, 226, 184, 0.16);
  border-radius: 32px;
  background:
    linear-gradient(180deg, rgba(17, 25, 41, 0.96), rgba(9, 14, 24, 0.94));
  box-shadow:
    0 34px 86px rgba(0, 0, 0, 0.46),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 31px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent 40%);
  pointer-events: none;
}

.panel-glow {
  position: absolute;
  right: -28px;
  bottom: -28px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 217, 255, 0.2), transparent 70%);
  filter: blur(10px);
}

.panel-label {
  margin: 0;
  color: var(--gold);
  font-size: 0.84rem;
  letter-spacing: 0.2em;
}

.panel-platform {
  margin: 18px 0 0;
  color: #d5dded;
  font-size: 0.96rem;
}

.panel-version {
  margin: 12px 0 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "STSong", serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.08;
}

.panel-summary {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.panel-routes {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.route-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.route-name {
  display: inline-flex;
  justify-content: center;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(242, 196, 127, 0.08);
  border: 1px solid rgba(242, 196, 127, 0.18);
  color: var(--gold);
  font-size: 0.86rem;
}

.route-file {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.route-file span {
  color: var(--muted);
  font-size: 0.82rem;
}

.route-file strong {
  overflow-wrap: anywhere;
  font-size: 0.98rem;
}

.panel-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.panel-meta div {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.panel-meta span,
.card-specs span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.84rem;
}

.panel-meta strong,
.card-specs strong {
  font-size: 1rem;
  font-weight: 700;
}

.downloads-section,
.assurance-card {
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 24px;
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.assurance-card h3,
.download-card h3 {
  margin: 14px 0 10px;
  font-size: 1.12rem;
}

.assurance-card p,
.download-card p,
.note-list li {
  color: var(--muted);
  line-height: 1.75;
}

.downloads-section,
.assurance {
  position: relative;
  overflow: hidden;
  margin-top: 18px;
  padding: 30px;
  border-color: rgba(255, 226, 184, 0.1);
}

.downloads-section::before,
.assurance::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 226, 184, 0.42), transparent);
  pointer-events: none;
}

#downloads {
  scroll-margin-top: 96px;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2 {
  font-size: clamp(2.1rem, 4vw, 3.3rem);
}

.section-heading p:last-child {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.section-heading-compact h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.download-grid.is-single {
  grid-template-columns: 1fr;
}

.download-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(255, 226, 184, 0.1);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(20, 29, 47, 0.84), rgba(11, 18, 30, 0.96));
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.download-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 226, 184, 0.3), transparent 68%);
  pointer-events: none;
}

.download-card::after {
  content: "";
  position: absolute;
  inset: auto -15% -20% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 196, 127, 0.14), transparent 68%);
  pointer-events: none;
}

.download-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 226, 184, 0.2);
  box-shadow: 0 36px 80px rgba(0, 0, 0, 0.48);
}

.download-card.is-featured {
  border-color: rgba(255, 226, 184, 0.24);
  background:
    linear-gradient(180deg, rgba(28, 40, 64, 0.88), rgba(11, 18, 30, 0.94));
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.card-platform {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.07);
  color: #dde5f3;
  font-size: 0.86rem;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  height: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(242, 196, 127, 0.12);
  border: 1px solid rgba(242, 196, 127, 0.22);
  color: var(--gold);
  font-size: 0.84rem;
  white-space: nowrap;
}

.download-card h3 {
  margin-top: 16px;
  font-size: 1.35rem;
}

.card-summary {
  margin: 0;
}

.card-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.card-specs div {
  padding: 15px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.note-list {
  margin: 18px 0 0;
  padding-left: 18px;
}

.download-button {
  margin-top: 22px;
  min-height: 60px;
  font-size: 1.04rem;
  letter-spacing: 0.01em;
}

.download-button-wide {
  width: 100%;
}

.download-empty {
  margin-top: 24px;
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

.hidden {
  display: none !important;
}

.assurance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.assurance-card {
  padding: 24px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding: 0 6px;
  color: #8d98af;
  font-size: 0.92rem;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

@keyframes bubble-float {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.3);
  }

  22% {
    opacity: 0.92;
  }

  100% {
    opacity: 0;
    transform:
      translate(
        calc(-50% + var(--drift-x, 0px)),
        calc(-50% + var(--drift-y, -70px))
      )
      scale(1.34);
  }
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .download-grid,
  .assurance-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(100% - 16px, 1180px);
    padding-top: 12px;
  }

  .topbar {
    top: 10px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px 14px;
  }

  .hero {
    gap: 18px;
    padding-top: 24px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .downloads-section,
  .assurance {
    padding: 22px 18px;
  }

  .hero-panel {
    padding: 24px 18px;
  }

  .panel-routes,
  .panel-meta,
  .card-specs {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.45rem;
  }

  .hero-points {
    flex-direction: column;
  }

  .button,
  .download-button,
  .topbar-link {
    width: 100%;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    font-size: 1.2rem;
  }

  .hero-panel,
  .download-card {
    border-radius: 24px;
  }

  .route-item {
    grid-template-columns: 1fr;
  }

  .card-top {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor-aura,
  .bubble {
    display: none;
  }
}