:root {
  color-scheme: light;
  
  /* 明亮赛博霓虹 - 调色板 */
  --bg: #fcfbfe;
  --bg-gradient-start: #ffffff;
  --bg-gradient-mid: #fff5f9;
  --bg-gradient-end: #f0fdfc;
  
  --panel: rgba(255, 255, 255, 0.85);
  --panel-solid: #ffffff;
  
  /* 文字颜色 */
  --text: #1a0835;         /* 深紫黑 */
  --muted: #62557a;        /* 柔和的深紫灰 */
  --soft: #8476a3;         /* 更淡的辅助字色 */
  
  /* 赛博高饱和霓虹色 */
  --neon-pink: #ff007f;    /* 荧光霓虹粉 */
  --neon-cyan: #00f0ff;    /* 电晶霓虹青 */
  --acid-lime: #bfff00;    /* 酸性荧光黄绿 */
  
  /* 描边颜色 */
  --cyber-dark: #180835;   /* 极简深描边 */
  --line: rgba(24, 8, 53, 0.08);
  --line-strong: rgba(24, 8, 53, 0.18);
  
  /* 重阴影 - 新野兽主义风格 (Neo-Brutalism Offset Shadows) */
  --shadow-cyber-pink: 4px 4px 0px var(--neon-pink);
  --shadow-cyber-cyan: 4px 4px 0px var(--neon-cyan);
  --shadow-cyber-dark: 5px 5px 0px var(--cyber-dark);
  --shadow-soft: 0 16px 48px rgba(24, 8, 53, 0.06);
  --shadow-neon-glow: 0 0 18px rgba(255, 0, 127, 0.35);
  
  --radius: 12px;
  --radius-lg: 24px;
  
  /* 字体族 */
  --font-title: 'Space Grotesk', 'Share Tech Mono', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  transition: background-color 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 10% 15%, rgba(255, 0, 127, 0.08), transparent 30%),
    radial-gradient(circle at 88% 22%, rgba(0, 240, 255, 0.08), transparent 28%),
    radial-gradient(circle at 60% 85%, rgba(191, 255, 0, 0.06), transparent 25%),
    linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 45%, var(--bg-gradient-end) 100%);
  position: relative;
  overflow-x: hidden;
}

/* 虚线/细线网格背景层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.85;
  background-image:
    linear-gradient(rgba(24, 8, 53, 0.03) 1.5px, transparent 1.5px),
    linear-gradient(90deg, rgba(24, 8, 53, 0.03) 1.5px, transparent 1.5px);
  background-size: 50px 50px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 75%);
  z-index: 0;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(16px, 5vw, 64px);
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 2px solid var(--cyber-dark);
  backdrop-filter: blur(24px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-title);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.5px;
  font-size: 20px;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1.5px solid var(--cyber-dark);
  box-shadow: 2px 2px 0px var(--neon-pink);
  transform: rotate(-3deg);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.brand:hover img {
  transform: rotate(6deg) scale(1.05);
  box-shadow: 2px 2px 0px var(--neon-cyan);
}

.nav-links {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  color: var(--muted);
  font-size: 14px;
  font-family: var(--font-title);
  font-weight: 600;
  border: 1.5px solid var(--cyber-dark);
  border-radius: 99px;
  background: var(--panel-solid);
  box-shadow: 2px 2px 0px var(--cyber-dark);
}

.nav-links a {
  padding: 8px 16px;
  border-radius: 99px;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: #fff;
  background: var(--cyber-dark);
}

.language-select {
  min-width: 108px;
  height: 38px;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: var(--panel-solid);
  color: var(--text);
  font-family: var(--font-title);
  font-weight: 600;
  padding: 0 12px;
  outline: none;
  cursor: pointer;
  box-shadow: 2px 2px 0px var(--cyber-dark);
}

.language-select:focus {
  border-color: var(--neon-pink);
  box-shadow: 2px 2px 0px var(--neon-pink);
}

.language-select.compact {
  min-width: 90px;
  height: 34px;
  padding: 0 8px;
}

/* 赛博英雄区 (Cyber Hero) */
.cyber-hero {
  position: relative;
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 440px);
  align-items: center;
  gap: clamp(24px, 6vw, 64px);
  padding: clamp(40px, 6vw, 80px) clamp(16px, 5vw, 64px) clamp(64px, 8vw, 120px);
  overflow: hidden;
  border-bottom: 2px solid var(--cyber-dark);
  z-index: 1;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(252, 251, 254, 0.98) 0%, rgba(252, 251, 254, 0.88) 40%, rgba(252, 251, 254, 0.4) 100%),
    linear-gradient(180deg, rgba(252, 251, 254, 0.05) 0%, rgba(252, 251, 254, 0.3) 60%, var(--bg) 100%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  opacity: 0.35;
  filter: saturate(1.4) contrast(1.1) brightness(1.05);
}

.cyber-grid {
  position: absolute;
  inset: auto -10% -20% -10%;
  height: 60%;
  pointer-events: none;
  background:
    linear-gradient(rgba(0, 240, 255, 0.15) 1.5px, transparent 1.5px),
    linear-gradient(90deg, rgba(255, 0, 127, 0.12) 1.5px, transparent 1.5px);
  background-size: 54px 54px;
  transform: perspective(600px) rotateX(60deg);
  transform-origin: bottom;
  opacity: 0.4;
  mask-image: linear-gradient(180deg, transparent 0%, #000 35%, transparent 100%);
  z-index: 0;
  animation: gridPulse 8s ease-in-out infinite;
}

/* 动效：页面元素逐层显现 */
.cyber-hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  color: var(--cyber-dark);
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: var(--acid-lime);
  padding: 6px 12px;
  border: 1.5px solid var(--cyber-dark);
  border-radius: 6px;
  box-shadow: 2px 2px 0px var(--cyber-dark);
  animation: cyberEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.cyber-hero-content h1 {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(44px, 7.5vw, 94px);
  line-height: 0.95;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -2px;
  color: var(--text);
  text-shadow: 
    1.5px 1.5px 0px var(--neon-cyan),
    -1.5px -1.5px 0px var(--neon-pink);
  animation: cyberEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 32px;
  color: var(--muted);
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
  font-weight: 500;
  animation: cyberEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: cyberEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

/* 按钮重塑为赛博明亮Neo-Brutalism样式 */
.store-button {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 22px;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: var(--panel-solid);
  box-shadow: var(--shadow-cyber-dark);
  cursor: pointer;
  transform: translate(0, 0);
  transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.1), box-shadow 0.15s ease;
}

.store-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--cyber-dark);
}

.store-button:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0px var(--cyber-dark);
}

.store-button.primary {
  background: var(--neon-pink);
  color: #fff;
  border-color: var(--cyber-dark);
  box-shadow: var(--shadow-cyber-dark);
}

.store-button.primary:hover {
  background: #ff1a8c;
  box-shadow: 6px 6px 0px var(--cyber-dark);
}

.store-button.primary strong {
  color: #fff;
}

.store-button.primary small {
  color: rgba(255, 255, 255, 0.85);
}

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

.store-button small {
  display: block;
  color: var(--soft);
  font-size: 10px;
  font-family: var(--font-title);
  font-weight: 700;
  text-transform: uppercase;
}

.store-button strong {
  display: block;
  font-size: 14px;
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.2;
}

.store-icon {
  display: grid;
  place-items: center;
  min-width: 42px;
  height: 34px;
  border-radius: 6px;
  border: 1.5px solid var(--cyber-dark);
  background: var(--acid-lime);
  color: var(--cyber-dark);
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 800;
}

.store-button.primary .store-icon {
  background: var(--neon-cyan);
  color: var(--cyber-dark);
}

.store-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* 控制台模块 (Hero Console) */
.hero-console {
  position: relative;
  z-index: 2;
  align-self: center;
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 2px solid var(--cyber-dark);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-cyber-pink);
  backdrop-filter: blur(16px);
  animation: cyberEntrance 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.console-line {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1.5px solid var(--cyber-dark);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: inset 0px 2px 4px rgba(24, 8, 53, 0.04);
}

.console-line span {
  color: var(--neon-pink);
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.console-line strong {
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-title);
  font-weight: 600;
  line-height: 1.35;
}

/* 信号工作流条带 (Signal Strip) */
.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: -36px clamp(16px, 5vw, 64px) 48px;
  position: relative;
  z-index: 10;
  overflow: hidden;
  border: 2px solid var(--cyber-dark);
  border-radius: 18px;
  background: var(--cyber-dark);
  box-shadow: var(--shadow-cyber-cyan);
}

.signal-strip div {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 80px;
  padding: 16px clamp(16px, 3vw, 28px);
  background: #ffffff;
}

.signal-strip span {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 14px;
  color: var(--neon-pink);
  background: var(--bg-gradient-mid);
  border: 1.5px solid var(--cyber-dark);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  box-shadow: 2px 2px 0px var(--cyber-dark);
}

.signal-strip strong {
  font-family: var(--font-title);
  font-size: clamp(15px, 2.2vw, 18px);
  font-weight: 700;
}

/* 功能卡片区 (Features) */
.feature-band {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 clamp(16px, 5vw, 64px) 64px;
  overflow: hidden;
  border: 2px solid var(--cyber-dark);
  border-radius: 20px;
  background: var(--cyber-dark);
  box-shadow: var(--shadow-soft);
}

.feature {
  min-height: 240px;
  padding: clamp(20px, 4vw, 40px);
  background: var(--panel-solid);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
  background: var(--bg-gradient-mid);
}

.feature span {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--cyber-dark);
  border-radius: 8px;
  color: var(--cyber-dark);
  background: var(--neon-cyan);
  font-family: var(--font-title);
  font-weight: 700;
  box-shadow: 2px 2px 0px var(--cyber-dark);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature:hover span {
  transform: translateY(-4px) scale(1.05);
}

.feature h2 {
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.2s ease;
  transform-origin: left;
}

.feature:hover h2 {
  transform: translateY(-2px);
  color: var(--neon-pink);
}

.feature h2,
.preview-copy h2,
.legal-heading h2,
.delete-section h2 {
  margin: 16px 0 12px;
  font-family: var(--font-title);
  font-size: clamp(22px, 3.8vw, 36px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.feature p,
.preview-copy p,
.legal-heading p,
.delete-section p,
.legal-content p,
.legal-content li {
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
  font-weight: 500;
}

/* 样例预览区 */
.neon-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 400px);
  align-items: center;
  gap: clamp(32px, 6vw, 64px);
  padding: clamp(48px, 8vw, 96px) clamp(16px, 5vw, 64px);
  border-top: 2px solid var(--cyber-dark);
  border-bottom: 2px solid var(--cyber-dark);
  background:
    linear-gradient(180deg, transparent, rgba(0, 240, 255, 0.03) 50%, transparent),
    radial-gradient(circle at 85% 50%, rgba(255, 0, 127, 0.06), transparent 30%);
}

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

.sample-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 24px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-family: var(--font-title);
  font-weight: 700;
  border-bottom: 2px solid var(--neon-pink);
  padding-bottom: 2px;
  transition: all 0.2s ease;
}

.text-link:hover {
  color: var(--neon-pink);
  border-bottom-color: var(--cyber-dark);
  transform: translateX(4px);
}

.text-link::after {
  content: "→";
}

.device-stage {
  position: relative;
  display: grid;
  place-items: center;
}

/* 霓虹发光圆晕 */
.device-stage::before {
  content: "";
  position: absolute;
  width: 90%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    rgba(255, 0, 127, 0.35),
    rgba(0, 240, 255, 0.35),
    rgba(191, 255, 0, 0.2),
    rgba(255, 0, 127, 0.35)
  );
  filter: blur(36px);
  opacity: 0.6;
}

.phone-shot {
  position: relative;
  z-index: 1;
  width: min(100%, 360px);
  justify-self: center;
  border-radius: 28px;
  border: 3px solid var(--cyber-dark);
  box-shadow: 8px 8px 0px var(--cyber-dark);
  animation: phoneFloat 6s ease-in-out infinite;
}

/* 条款协议页面 */
.legal-page {
  background:
    radial-gradient(circle at 10% 0%, rgba(0, 240, 255, 0.08), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(255, 0, 127, 0.08), transparent 28%);
}

.legal-hero {
  padding: clamp(48px, 6vw, 80px) clamp(16px, 5vw, 64px) clamp(32px, 4vw, 48px);
  border-bottom: 2px solid var(--cyber-dark);
}

.legal-hero h1 {
  max-width: 900px;
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -1.5px;
}

.legal-hero p:last-child {
  max-width: 600px;
  margin: 16px 0 0;
  color: var(--muted);
  font-weight: 500;
  font-size: 14px;
}

.legal-section {
  display: grid;
  grid-template-columns: minmax(200px, 0.8fr) minmax(0, 1.6fr);
  gap: clamp(24px, 5vw, 64px);
  padding: clamp(40px, 6vw, 80px) clamp(16px, 5vw, 64px);
  border-top: 2px solid var(--cyber-dark);
}

.legal-section.standalone {
  border-top: 0;
  background: transparent;
}

.legal-heading {
  position: sticky;
  top: 98px;
  align-self: start;
}

.legal-content {
  display: grid;
  gap: 16px;
}

.legal-block {
  padding: 24px;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: var(--panel-solid);
  box-shadow: var(--shadow-cyber-cyan);
}

.legal-block h3 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
}

.legal-block ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.legal-block li {
  margin-bottom: 8px;
}

/* 账号删除区域 */
.delete-section {
  padding: clamp(40px, 6vw, 80px) clamp(16px, 5vw, 64px);
  border-top: 2px solid var(--cyber-dark);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 420px);
  gap: clamp(24px, 5vw, 48px);
  background:
    linear-gradient(135deg, rgba(255, 0, 127, 0.05), transparent 40%),
    #ffffff;
}

.delete-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: var(--panel-solid);
  box-shadow: var(--shadow-cyber-pink);
}

.delete-form label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
}

.delete-form input,
.delete-form textarea {
  width: 100%;
  border: 2px solid var(--cyber-dark);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  padding: 12px 14px;
  resize: vertical;
  outline: none;
}

.delete-form input:focus,
.delete-form textarea:focus {
  border-color: var(--neon-pink);
  box-shadow: 0 0 0 3px rgba(255, 0, 127, 0.1);
}

.delete-form button {
  min-height: 48px;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: var(--neon-pink);
  color: #ffffff;
  font-family: var(--font-title);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-cyber-dark);
  transform: translate(0, 0);
  transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.1), box-shadow 0.15s ease;
}

.delete-form button:hover {
  background: #ff1a8c;
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--cyber-dark);
}

.delete-form button:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0px var(--cyber-dark);
}

/* 页脚 */
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(16px, 5vw, 64px);
  color: var(--muted);
  border-top: 2px solid var(--cyber-dark);
  font-size: 13px;
  background: var(--panel-solid);
}

.site-footer a {
  border-bottom: 1.5px solid transparent;
}

.site-footer a:hover {
  color: var(--neon-pink);
  border-bottom-color: var(--neon-pink);
}

/* 分享单曲页播放器外壳 */
.share-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 0, 127, 0.1), transparent 35%),
    radial-gradient(circle at 10% 80%, rgba(0, 240, 255, 0.08), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #fff7fb 50%, #f0fdfc 100%);
}

.share-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.7;
  background-image:
    linear-gradient(rgba(24, 8, 53, 0.035) 1.5px, transparent 1.5px),
    linear-gradient(90deg, rgba(24, 8, 53, 0.035) 1.5px, transparent 1.5px);
  background-size: 40px 40px;
  z-index: 0;
}

.share-player {
  position: relative;
  z-index: 2;
  width: min(100%, 430px);
  background: #ffffff;
  border: 3px solid var(--cyber-dark);
  border-radius: var(--radius-lg);
  box-shadow: 8px 8px 0px var(--cyber-dark);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.share-cover {
  position: relative;
  height: 38vh;
  min-height: 280px;
  max-height: 380px;
  border-bottom: 2.5px solid var(--cyber-dark);
  overflow: hidden;
  background: var(--bg-gradient-mid);
  display: flex;
  align-items: center;
  justify-content: center;
}

.share-cover img {
  width: 82%;
  height: 82%;
  object-fit: cover;
  border-radius: 50%; /* 唱片机黑胶唱片效果 */
  border: 5px solid var(--cyber-dark);
  box-shadow: 
    0 0 0 10px rgba(0, 240, 255, 0.15),
    0 0 0 20px rgba(255, 0, 127, 0.1);
  transition: transform 0.8s ease;
}

/* 动效：唱片旋转 */
.share-player.is-playing .share-cover img {
  animation: spinRecord 12s linear infinite;
}

.share-topbar {
  position: absolute;
  z-index: 10;
  top: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.round-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cyber-dark);
  border-radius: 50%;
  background: #ffffff;
  color: var(--cyber-dark);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  box-shadow: 2px 2px 0px var(--cyber-dark);
}

.round-icon:hover {
  background: var(--neon-pink);
  color: #fff;
}

.share-body {
  padding: 24px 20px 104px;
  display: grid;
  gap: 20px;
}

.song-meta {
  text-align: center;
}

.song-meta .eyebrow {
  margin-bottom: 8px;
}

.song-meta h1 {
  font-family: var(--font-title);
  font-size: clamp(28px, 8vw, 38px);
  line-height: 1.05;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.5px;
}

.song-meta #songArtist {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.song-id {
  margin: 10px auto 0;
  width: fit-content;
  padding: 4px 12px;
  border: 1.5px solid var(--cyber-dark);
  border-radius: 99px;
  color: var(--cyber-dark);
  background: var(--acid-lime);
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  box-shadow: 2px 2px 0px var(--cyber-dark);
}

/* 歌词面板 */
.lyrics-panel {
  min-height: 240px;
  display: flex;
  flex-direction: column;
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 4px 4px 0px var(--neon-pink);
  overflow: hidden;
}

.lyrics-prompt {
  padding: 12px 14px;
  color: var(--cyber-dark);
  background: var(--bg-gradient-mid);
  border-bottom: 2px solid var(--cyber-dark);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  font-family: var(--font-title);
}

.lyrics-list {
  flex: 1;
  max-height: 200px;
  overflow-y: auto;
  padding: 16px 14px;
  text-align: center;
  scroll-behavior: smooth;
}

.lyric-line {
  margin: 0 0 14px;
  color: var(--soft);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.45;
  transition: all 0.25s ease;
}

.lyric-line.active {
  color: var(--neon-pink);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  transform: scale(1.04);
  position: relative;
}

.lyric-line.active::before {
  content: "🎵";
  margin-right: 6px;
  font-size: 12px;
}

/* 自定义原生 audio */
audio {
  width: 100%;
  height: 40px;
  accent-color: var(--cyber-dark);
  border: 2px solid var(--cyber-dark);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0px var(--cyber-dark);
  outline: none;
}

/* 歌曲播放器底栏固定下载 */
.sticky-download {
  position: fixed;
  z-index: 100;
  left: 50%;
  bottom: 0;
  width: min(100%, 430px);
  transform: translateX(-50%);
  padding: 12px 16px max(12px, env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.9);
  border-top: 2.5px solid var(--cyber-dark);
  backdrop-filter: blur(20px);
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.03);
}

/* 动画帧定义 */
@keyframes cyberEntrance {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spinRecord {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes phoneFloat {
  0% {
    transform: translateY(0px);
    box-shadow: 8px 8px 0px var(--cyber-dark);
  }
  50% {
    transform: translateY(-12px);
    box-shadow: 8px 20px 0px rgba(24, 8, 53, 0.85);
  }
  100% {
    transform: translateY(0px);
    box-shadow: 8px 8px 0px var(--cyber-dark);
  }
}

@keyframes gridPulse {
  0%, 100% {
    opacity: 0.35;
  }
  50% {
    opacity: 0.55;
  }
}

/* 响应式断点优化 (iPad / Tablet) */
@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    grid-column: 1 / -1;
    justify-self: stretch;
    justify-content: flex-start;
    overflow-x: auto;
    box-shadow: none;
    border-radius: 12px;
    padding: 6px;
  }
  
  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .cyber-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-media::after {
    background:
      linear-gradient(180deg, rgba(252, 251, 254, 0.95) 0%, rgba(252, 251, 254, 0.9) 60%, var(--bg) 100%);
  }

  .hero-media img {
    object-position: center top;
  }

  .feature-band,
  .neon-showcase,
  .legal-section,
  .delete-section {
    grid-template-columns: 1fr;
  }

  .feature-band {
    margin-inline: 16px;
  }

  .feature {
    min-height: auto;
  }

  .legal-heading {
    position: static;
  }

  .site-footer {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
  }
}

/* 响应式断点优化 (Mobile) */
@media (max-width: 520px) {
  .site-header {
    padding: 12px 16px;
    gap: 10px;
  }

  .brand span {
    font-size: 17px;
  }

  .nav-links a {
    padding: 6px 12px;
    white-space: nowrap;
  }

  .download-row,
  .store-button {
    width: 100%;
  }

  .store-button {
    min-height: 50px;
    padding: 8px 18px;
    border-radius: 10px;
  }

  .store-icon {
    min-width: 36px;
    height: 30px;
  }

  .store-icon svg {
    width: 16px;
    height: 16px;
  }

  .cyber-hero {
    padding-top: 24px;
    padding-inline: 16px;
  }

  .cyber-hero-content h1 {
    font-size: clamp(34px, 12vw, 54px);
    letter-spacing: -1px;
  }

  .hero-console {
    display: none; /* 移动端屏幕过小隐藏代码终端以保持界面精简 */
  }

  .signal-strip {
    margin-inline: 16px;
    margin-bottom: 24px;
    border-radius: 14px;
  }

  .signal-strip div {
    min-height: 68px;
    padding: 12px 16px;
  }

  .feature-band {
    margin-inline: 16px;
    border-radius: 14px;
  }

  .neon-showcase {
    padding: 40px 16px;
  }

  .legal-block,
  .delete-form {
    padding: 16px;
  }

  .phone-shot {
    border-radius: 20px;
  }

  .share-cover {
    height: 32vh;
    min-height: 240px;
  }

  .share-body {
    padding: 16px 14px 110px;
  }

  .song-meta h1 {
    font-size: clamp(24px, 9vw, 32px);
  }

  .lyrics-panel {
    min-height: 200px;
  }

  .lyrics-list {
    max-height: 180px;
    padding: 12px;
  }

  .lyric-line {
    margin-bottom: 12px;
  }
}