:root {
  --bg-deep: #14060a;
  --bg-mid: #1c080e;
  --bg-panel: #2a0e16;
  --pink: #ff6b9d;
  --pink-bright: #ff8fb5;
  --pink-soft: rgba(255, 107, 157, 0.18);
  --orange: #ff8c42;
  --orange-bright: #ffb347;
  --orange-soft: rgba(255, 140, 66, 0.2);
  --crimson: #8b0015;
  --crimson-mid: #c41e3a;
  --crimson-deep: #4a0010;
  --text: #fff0f4;
  --text-muted: #e8b8c4;
  --line: rgba(255, 140, 66, 0.28);
  --shadow: 0 28px 60px rgba(40, 0, 12, 0.55);
  --radius: 20px;
  --font-display: "ZCOOL QingKe HuangYou", "Noto Sans SC", cursive;
  --font-body: "Noto Sans SC", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg-deep);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: var(--orange-bright);
  text-decoration: none;
  transition: color 0.25s ease, transform 0.25s ease;
}

a:hover {
  color: #ffe0c2;
}

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

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

/* —— 背景氛围 —— */
.bg-aurora,
.bg-mesh,
.bg-particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.bg-aurora {
  background:
    radial-gradient(ellipse 75% 50% at 12% 8%, rgba(255, 107, 157, 0.35), transparent 55%),
    radial-gradient(ellipse 55% 40% at 88% 18%, rgba(255, 140, 66, 0.28), transparent 50%),
    radial-gradient(ellipse 70% 55% at 50% 95%, rgba(139, 0, 21, 0.55), transparent 60%),
    linear-gradient(180deg, #0f0408 0%, #1c080e 45%, #14060a 100%);
}

.bg-mesh {
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(255, 140, 66, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 157, 0.08) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse at center, black 28%, transparent 78%);
}

.bg-particles span {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--pink-bright);
  opacity: 0.4;
  animation: float-particle linear infinite;
  box-shadow: 0 0 10px rgba(255, 140, 66, 0.7);
}

@keyframes float-particle {
  from { transform: translateY(100vh) scale(0.6); opacity: 0; }
  15% { opacity: 0.55; }
  to { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.site-header,
main,
.site-footer,
.back-top {
  position: relative;
  z-index: 1;
}

/* —— 顶栏 —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(20, 6, 10, 0.72);
  border-bottom: 1px solid rgba(255, 107, 157, 0.15);
  transition: box-shadow 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background:
    linear-gradient(145deg, var(--pink) 0%, var(--orange) 55%, var(--crimson-mid) 100%);
  box-shadow:
    0 8px 20px rgba(196, 30, 58, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  position: relative;
  transform: perspective(400px) rotateY(-12deg) rotateX(8deg);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 6px;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-bottom-color: transparent;
  border-left-color: transparent;
  transform: rotate(45deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--pink-bright), var(--orange-bright));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-text em {
  font-style: normal;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.28em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px 18px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 6px 2px;
}

.nav a:hover {
  color: var(--pink-bright);
}

.nav-cta {
  margin-left: 8px;
  padding: 10px 18px !important;
  border-radius: 999px;
  color: #1a060a !important;
  font-weight: 700 !important;
  background: linear-gradient(135deg, var(--orange-bright), var(--pink), var(--crimson-mid));
  box-shadow:
    0 10px 24px rgba(196, 30, 58, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transform: translateY(0);
}

.nav-cta:hover {
  color: #1a060a !important;
  transform: translateY(-2px);
}

/* —— Hero —— */
.hero {
  position: relative;
  padding: 72px 0 56px;
  min-height: min(88vh, 820px);
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: orb-pulse 8s ease-in-out infinite;
}

.orb-pink {
  width: 420px;
  height: 420px;
  background: var(--pink);
  top: -80px;
  left: -60px;
}

.orb-orange {
  width: 360px;
  height: 360px;
  background: var(--orange);
  top: 20%;
  right: -40px;
  animation-delay: -2.5s;
}

.orb-crimson {
  width: 480px;
  height: 480px;
  background: var(--crimson-mid);
  bottom: -160px;
  left: 35%;
  animation-delay: -4s;
  opacity: 0.35;
}

@keyframes orb-pulse {
  0%, 100% { transform: scale(1); opacity: 0.45; }
  50% { transform: scale(1.12); opacity: 0.65; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange-bright);
  font-weight: 700;
}

.brand-hero {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.6rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.06em;
  background: linear-gradient(115deg, #fff 10%, var(--pink-bright) 40%, var(--orange-bright) 70%, var(--crimson-mid) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 20px 40px rgba(196, 30, 58, 0.25);
  animation: brand-in 0.9s ease both;
}

.hero-tagline {
  margin: 14px 0 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--pink-bright);
  letter-spacing: 0.08em;
  animation: brand-in 0.9s 0.1s ease both;
}

.lead {
  margin: 20px 0 0;
  max-width: 34em;
  color: var(--text-muted);
  font-size: 1.05rem;
  animation: brand-in 0.9s 0.18s ease both;
}

@keyframes brand-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  animation: brand-in 0.9s 0.26s ease both;
}

.btn {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 2px;
  padding: 14px 26px;
  border-radius: 16px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-primary {
  color: #1a060a;
  background: linear-gradient(145deg, var(--orange-bright) 0%, var(--pink) 48%, var(--crimson-mid) 100%);
  box-shadow:
    0 14px 32px rgba(196, 30, 58, 0.45),
    0 4px 0 #6b0012,
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover {
  color: #1a060a;
  transform: translateY(-3px);
  box-shadow:
    0 20px 40px rgba(196, 30, 58, 0.55),
    0 6px 0 #6b0012,
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 140, 66, 0.35);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  flex-direction: row;
  align-items: center;
}

.btn-ghost:hover {
  color: #fff;
  border-color: var(--pink);
  transform: translateY(-3px);
}

.btn-3d {
  transform-style: preserve-3d;
}

.btn-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  animation: shine 3.5s ease-in-out infinite;
}

@keyframes shine {
  0%, 60% { transform: translateX(-120%); }
  80%, 100% { transform: translateX(120%); }
}

.btn-label {
  font-size: 1.05rem;
  position: relative;
}

.btn-meta {
  font-size: 0.72rem;
  font-weight: 500;
  opacity: 0.8;
  position: relative;
}

.btn-lg {
  padding: 18px 32px;
}

.btn.is-downloading {
  transform: scale(0.97);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  animation: brand-in 0.9s 0.34s ease both;
}

.hero-meta strong {
  color: var(--orange-bright);
  margin-right: 4px;
}

/* —— 立体设备视觉 —— */
.hero-visual {
  perspective: 1200px;
}

.device-stage {
  position: relative;
  height: 460px;
  display: grid;
  place-items: center;
  transform-style: preserve-3d;
}

.device-glow {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 140, 66, 0.45), rgba(255, 107, 157, 0.2), transparent 70%);
  filter: blur(20px);
  animation: glow-breathe 4s ease-in-out infinite;
}

@keyframes glow-breathe {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
}

.device-card {
  position: relative;
  width: 280px;
  height: 360px;
  border-radius: 28px;
  background: linear-gradient(160deg, #3a1420 0%, #1a080e 100%);
  border: 1px solid rgba(255, 140, 66, 0.35);
  box-shadow:
    0 30px 60px rgba(80, 0, 20, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transform: rotateY(-12deg) rotateX(8deg);
  transform-style: preserve-3d;
  transition: transform 0.35s ease;
  padding: 14px;
}

.device-screen {
  height: 100%;
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 107, 157, 0.15), transparent 40%),
    linear-gradient(145deg, #2a1018, #12060a);
  border: 1px solid rgba(255, 107, 157, 0.25);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.screen-bar {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.25);
}

.screen-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pink);
}

.screen-bar span:nth-child(2) { background: var(--orange); }
.screen-bar span:nth-child(3) { background: var(--crimson-mid); }

.screen-body {
  flex: 1;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.screen-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.08em;
}

.fps-badge {
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  color: #1a060a;
  background: linear-gradient(90deg, var(--orange-bright), var(--pink));
  box-shadow: 0 8px 18px rgba(255, 140, 66, 0.35);
}

.bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 72px;
  margin-top: auto;
}

.bars i {
  flex: 1;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--pink-bright), var(--crimson-mid));
  animation: bar-dance 1.4s ease-in-out infinite;
  box-shadow: 0 0 12px rgba(255, 107, 157, 0.4);
}

.bars i:nth-child(1) { height: 35%; animation-delay: 0s; }
.bars i:nth-child(2) { height: 60%; animation-delay: 0.1s; }
.bars i:nth-child(3) { height: 85%; animation-delay: 0.2s; }
.bars i:nth-child(4) { height: 50%; animation-delay: 0.3s; }
.bars i:nth-child(5) { height: 95%; animation-delay: 0.15s; }
.bars i:nth-child(6) { height: 70%; animation-delay: 0.25s; }

@keyframes bar-dance {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.72); }
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.mini-stats div {
  padding: 8px 6px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 140, 66, 0.15);
  text-align: center;
}

.mini-stats em {
  display: block;
  font-style: normal;
  font-size: 0.68rem;
  color: var(--text-muted);
}

.mini-stats b {
  font-size: 0.9rem;
  color: var(--orange-bright);
}

.device-shadow {
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: -28px;
  height: 28px;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.55), transparent 70%);
  filter: blur(6px);
  transform: translateZ(-20px);
}

.orbit {
  position: absolute;
  border: 1px dashed rgba(255, 140, 66, 0.35);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

.orbit-1 {
  width: 380px;
  height: 380px;
}

.orbit-2 {
  width: 460px;
  height: 460px;
  animation-direction: reverse;
  animation-duration: 26s;
  border-color: rgba(255, 107, 157, 0.25);
}

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

.float-chip {
  position: absolute;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  background: rgba(42, 14, 22, 0.85);
  border: 1px solid rgba(255, 140, 66, 0.4);
  box-shadow: 0 12px 28px rgba(80, 0, 20, 0.4);
  backdrop-filter: blur(8px);
  animation: chip-float 4s ease-in-out infinite;
}

.chip-1 { top: 48px; left: 18px; }
.chip-2 { top: 120px; right: 8px; animation-delay: -1.2s; }
.chip-3 { bottom: 70px; left: 30px; animation-delay: -2.2s; }

@keyframes chip-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* —— 数据条 —— */
.stats {
  padding: 8px 0 40px;
}

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

.stat-block {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, rgba(255, 107, 157, 0.12), rgba(42, 14, 22, 0.6));
  border: 1px solid rgba(255, 140, 66, 0.22);
  box-shadow: var(--shadow);
  transform: perspective(800px) rotateX(2deg);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-block:hover {
  transform: perspective(800px) translateY(-6px) rotateX(0);
  border-color: var(--pink);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  line-height: 1;
  background: linear-gradient(90deg, var(--orange-bright), var(--pink-bright));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-unit {
  margin-top: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pink-bright);
  letter-spacing: 0.12em;
}

.stat-block p {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* —— 通用区块 —— */
.section {
  padding: 72px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(196, 30, 58, 0.08), transparent 30%, rgba(255, 107, 157, 0.05));
  border-block: 1px solid rgba(255, 140, 66, 0.1);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.section-head p:last-child {
  margin: 12px 0 0;
  color: var(--text-muted);
}

.card-3d {
  transform-style: preserve-3d;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

/* —— 功能 —— */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(42, 14, 22, 0.95), rgba(20, 6, 10, 0.9));
  border: 1px solid rgba(255, 107, 157, 0.18);
  box-shadow:
    0 18px 40px rgba(40, 0, 12, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.feature-card:hover {
  border-color: rgba(255, 140, 66, 0.55);
  box-shadow:
    0 24px 48px rgba(196, 30, 58, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  margin-bottom: 16px;
  background: linear-gradient(145deg, var(--pink), var(--orange));
  box-shadow:
    0 12px 24px rgba(255, 107, 157, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  position: relative;
}

.feature-icon::before,
.feature-icon::after {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.9);
}

.icon-bolt::before {
  width: 4px;
  height: 22px;
  left: 24px;
  top: 12px;
  transform: skewX(-18deg);
  border-radius: 2px;
  box-shadow: 8px 4px 0 rgba(255, 255, 255, 0.55);
}

.icon-mouse::before {
  width: 16px;
  height: 24px;
  left: 18px;
  top: 12px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  background: transparent;
}

.icon-mouse::after {
  width: 2px;
  height: 8px;
  left: 25px;
  top: 16px;
  border-radius: 2px;
}

.icon-layers::before {
  width: 22px;
  height: 14px;
  left: 15px;
  top: 14px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 4px;
  background: transparent;
  box-shadow: 4px 6px 0 -2px rgba(255, 255, 255, 0.55);
}

.icon-screen::before {
  width: 26px;
  height: 18px;
  left: 13px;
  top: 14px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 3px;
  background: transparent;
}

.icon-screen::after {
  width: 10px;
  height: 2px;
  left: 21px;
  top: 36px;
}

.icon-shield::before {
  width: 18px;
  height: 22px;
  left: 17px;
  top: 12px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 9px 9px 4px 4px;
  background: transparent;
  clip-path: polygon(50% 0, 100% 20%, 100% 70%, 50% 100%, 0 70%, 0 20%);
}

.icon-tune::before {
  width: 22px;
  height: 2px;
  left: 15px;
  top: 18px;
  box-shadow: 0 8px 0 rgba(255, 255, 255, 0.9), 0 16px 0 rgba(255, 255, 255, 0.9);
}

.icon-tune::after {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  left: 20px;
  top: 15px;
  box-shadow: 10px 8px 0 rgba(255, 255, 255, 0.9), 0 16px 0 rgba(255, 255, 255, 0.9);
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* —— 性能塔 —— */
.performance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.check-list {
  margin: 22px 0 28px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 10px 0 10px 32px;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255, 140, 66, 0.12);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), var(--crimson-mid));
  box-shadow: 0 0 0 4px var(--orange-soft);
}

.tower {
  perspective: 900px;
  display: grid;
  gap: 14px;
  transform: rotateY(-8deg);
}

.tower-layer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-radius: 16px;
  background: linear-gradient(90deg, rgba(255, 107, 157, calc(0.08 + var(--i) * 0.06)), rgba(42, 14, 22, 0.9));
  border: 1px solid rgba(255, 140, 66, 0.25);
  box-shadow:
    0 16px 30px rgba(40, 0, 12, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateZ(calc(var(--i) * 12px)) translateX(calc(var(--i) * 8px));
  animation: tower-bob 4s ease-in-out infinite;
  animation-delay: calc(var(--i) * -0.4s);
}

@keyframes tower-bob {
  0%, 100% { transform: translateZ(calc(var(--i) * 12px)) translateX(calc(var(--i) * 8px)) translateY(0); }
  50% { transform: translateZ(calc(var(--i) * 12px)) translateX(calc(var(--i) * 8px)) translateY(-6px); }
}

.tower-layer span {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--pink-bright);
  font-weight: 700;
}

.tower-layer b {
  font-weight: 600;
}

/* —— 游戏 —— */
.game-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.game-card {
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(42, 14, 22, 0.75);
  border: 1px solid rgba(255, 107, 157, 0.16);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.game-art {
  height: 120px;
  border-radius: 14px;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 -30px 40px rgba(0, 0, 0, 0.35);
}

.game-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20, 6, 10, 0.55));
}

.g1 { background: linear-gradient(135deg, #ff8c42, #c41e3a 60%, #4a0010); }
.g2 { background: linear-gradient(135deg, #ff6b9d, #ff8c42, #8b0015); }
.g3 { background: linear-gradient(160deg, #ffb347, #ff6b9d 50%, #6b0012); }
.g4 { background: linear-gradient(120deg, #c41e3a, #ff8fb5, #ff8c42); }
.g5 { background: linear-gradient(145deg, #8b0015, #ff6b9d 55%, #ffb347); }
.g6 { background: linear-gradient(160deg, #ff8c42, #8b0015 45%, #ff6b9d); }

.game-card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.game-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* —— 亮点 —— */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.highlight-item {
  padding: 26px 22px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 140, 66, 0.1), rgba(20, 6, 10, 0.4));
  border-top: 3px solid var(--pink);
  box-shadow: 0 16px 36px rgba(40, 0, 12, 0.3);
  transform: perspective(700px) rotateX(4deg);
  transition: transform 0.3s ease;
}

.highlight-item:nth-child(2) { border-top-color: var(--orange); }
.highlight-item:nth-child(3) { border-top-color: var(--crimson-mid); }
.highlight-item:nth-child(4) { border-top-color: var(--pink-bright); }

.highlight-item:hover {
  transform: perspective(700px) translateY(-8px) rotateX(0);
}

.highlight-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
}

.highlight-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* —— 步骤 —— */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.step-card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: rgba(42, 14, 22, 0.8);
  border: 1px solid rgba(255, 140, 66, 0.2);
  box-shadow: var(--shadow);
  position: relative;
}

.step-num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2rem;
  background: linear-gradient(90deg, var(--orange-bright), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
}

.step-card h3 {
  margin: 0 0 10px;
}

.step-card p {
  margin: 0;
  color: var(--text-muted);
}

/* —— 配置 —— */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 900px;
  margin: 0 auto;
}

.spec-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  background: rgba(42, 14, 22, 0.85);
  border: 1px solid rgba(255, 107, 157, 0.2);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.spec-featured {
  background: linear-gradient(165deg, rgba(255, 107, 157, 0.18), rgba(42, 14, 22, 0.95));
  border-color: rgba(255, 140, 66, 0.45);
  transform: scale(1.02);
}

.ribbon {
  position: absolute;
  top: 18px;
  right: -28px;
  width: 120px;
  text-align: center;
  padding: 6px 0;
  font-size: 0.75rem;
  font-weight: 800;
  color: #1a060a;
  background: linear-gradient(90deg, var(--orange-bright), var(--pink));
  transform: rotate(35deg);
  box-shadow: 0 6px 14px rgba(196, 30, 58, 0.35);
}

.spec-card h3 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
}

.spec-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.spec-card li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 140, 66, 0.12);
  color: var(--text-muted);
}

.spec-card li b {
  color: var(--text);
  font-weight: 600;
  text-align: right;
}

/* —— 更新 —— */
.change-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.change-item {
  padding: 26px 22px;
  border-radius: var(--radius);
  background: rgba(42, 14, 22, 0.8);
  border: 1px solid rgba(255, 107, 157, 0.18);
  box-shadow: var(--shadow);
}

.change-item time {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--orange-bright);
  background: var(--orange-soft);
}

.change-item h3 {
  margin: 0 0 8px;
}

.change-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* —— FAQ —— */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  border-radius: 16px;
  background: rgba(42, 14, 22, 0.75);
  border: 1px solid rgba(255, 140, 66, 0.18);
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(40, 0, 12, 0.25);
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 48px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--pink-bright);
  font-size: 1.3rem;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item p {
  margin: 0;
  padding: 0 22px 18px;
  color: var(--text-muted);
}

/* —— CTA —— */
.cta-section {
  padding: 40px 0 80px;
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 40px 44px;
  border-radius: 24px;
  background:
    linear-gradient(125deg, rgba(255, 107, 157, 0.25), rgba(255, 140, 66, 0.18), rgba(139, 0, 21, 0.45));
  border: 1px solid rgba(255, 140, 66, 0.4);
  box-shadow:
    0 28px 60px rgba(80, 0, 20, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transform: perspective(900px) rotateX(2deg);
}

.cta-box h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 400;
}

.cta-box p:last-of-type {
  margin: 10px 0 0;
  color: var(--text-muted);
}

/* —— 页脚 —— */
.site-footer {
  padding: 56px 0 28px;
  border-top: 1px solid rgba(255, 107, 157, 0.15);
  background: rgba(10, 3, 6, 0.65);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 28px;
}

.footer-brand p {
  margin: 14px 0 0;
  color: var(--text-muted);
  max-width: 28em;
  font-size: 0.92rem;
}

.site-footer h4 {
  margin: 0 0 14px;
  font-size: 0.95rem;
  color: var(--pink-bright);
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer li + li {
  margin-top: 8px;
}

.site-footer a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer a:hover {
  color: var(--orange-bright);
}

.footer-bottom {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 140, 66, 0.12);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.seo-links a {
  color: var(--text-muted);
}

.seo-links a:hover {
  color: var(--pink-bright);
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #1a060a;
  font-weight: 800;
  background: linear-gradient(145deg, var(--orange-bright), var(--crimson-mid));
  box-shadow: 0 12px 28px rgba(196, 30, 58, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-top:hover {
  color: #1a060a;
}

/* —— 电脑端优先：宽屏保持丰富排版 —— */
@media (max-width: 1024px) {
  .hero-grid,
  .performance-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .device-stage {
    height: 400px;
  }

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

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

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

  .cta-box {
    flex-direction: column;
    align-items: flex-start;
    transform: none;
  }
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }

  .feature-grid,
  .game-grid,
  .change-list,
  .steps,
  .highlight-grid,
  .stats-grid,
  .spec-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 40px;
  }

  .brand-hero {
    font-size: 2.6rem;
  }
}