/* ============================================================
   星智代打 · 顶级电竞 UI · v2.0
   设计风格：Cyberpunk Esports / Glassmorphism / Neon Neumorphism
   ============================================================ */

/* === Tokens === */
:root {
  --bg-0: #05060d;
  --bg-1: #0a0d1a;
  --bg-2: #111528;
  --bg-3: #1a1f3a;
  --surface: rgba(20, 24, 48, 0.55);
  --surface-2: rgba(30, 36, 70, 0.6);
  --border: rgba(140, 160, 255, 0.12);
  --border-strong: rgba(140, 160, 255, 0.25);
  --text-1: #f5f7ff;
  --text-2: #b8bfdb;
  --text-3: #7e87a8;
  --neon-1: #ff6a00;     /* 橙 */
  --neon-2: #ff2d75;     /* 玫红 */
  --neon-3: #00e5ff;     /* 青 */
  --neon-4: #b14bff;     /* 紫 */
  --neon-5: #00ffa3;     /* 翡翠 */
  --gradient-primary: linear-gradient(135deg, #ff6a00 0%, #ff2d75 50%, #b14bff 100%);
  --gradient-cyber: linear-gradient(135deg, #00e5ff 0%, #b14bff 100%);
  --gradient-gold: linear-gradient(135deg, #ffd86b 0%, #ff6a00 100%);
  --shadow-glow: 0 0 40px rgba(255, 106, 0, 0.35), 0 0 80px rgba(177, 75, 255, 0.2);
  --shadow-card: 0 20px 50px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px var(--border);
  --shadow-hover: 0 30px 70px -20px rgba(255, 45, 117, 0.45), 0 0 0 1px var(--neon-2);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --font-display: 'Orbitron', 'Rajdhani', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
}

/* === Web Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Rajdhani:wght@500;600;700&display=swap');

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  line-height: 1.7;
  color: var(--text-1);
  background: var(--bg-0);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* === Animated Background Field === */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(255, 45, 117, 0.18), transparent 60%),
    radial-gradient(ellipse 70% 50% at 80% 10%, rgba(0, 229, 255, 0.15), transparent 60%),
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(177, 75, 255, 0.18), transparent 60%),
    linear-gradient(180deg, #05060d 0%, #0a0d1a 100%);
  z-index: -2;
  pointer-events: none;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(140, 160, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 160, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 80%);
  z-index: -1;
  pointer-events: none;
  animation: gridPan 60s linear infinite;
}
@keyframes gridPan {
  from { background-position: 0 0; }
  to { background-position: 60px 60px; }
}

a { color: var(--neon-3); text-decoration: none; transition: color .2s; }
a:hover { color: var(--neon-1); text-decoration: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* === Header (Glass) === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(10, 13, 26, 0.6);
  border-bottom: 1px solid var(--border);
}
.site-header .nav { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 2px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-transform: uppercase;
  position: relative;
}
.logo::before {
  content: '⚡';
  margin-right: 8px;
  -webkit-text-fill-color: var(--neon-1);
  filter: drop-shadow(0 0 8px var(--neon-1));
}
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  position: relative;
  padding: 8px 16px;
  color: var(--text-2);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .5px;
  border-radius: var(--radius-sm);
  transition: all .25s;
}
.nav-links a:hover {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.04);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all .3s;
  transform: translateX(-50%);
}
.nav-links a:hover::after { width: 60%; }

/* === HERO === */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 106, 0, 0.15), transparent 50%);
  filter: blur(40px);
  z-index: 0;
}
.hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 106, 0, 0.1);
  border: 1px solid rgba(255, 106, 0, 0.3);
  color: var(--neon-1);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 24px;
  animation: float 4s ease-in-out infinite;
}
.hero-tag::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--neon-5);
  box-shadow: 0 0 10px var(--neon-5);
  animation: pulseDot 1.5s ease-in-out infinite;
}
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(1.4); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #ff6a00 40%, #ff2d75 70%, #b14bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px rgba(255, 106, 0, 0.3);
  animation: heroIn .8s ease-out;
}
@keyframes heroIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hero h1 .accent {
  display: inline-block;
  position: relative;
}
.hero .lead {
  font-size: clamp(15px, 1.5vw, 19px);
  color: var(--text-2);
  max-width: 720px;
  margin: 0 auto 36px;
  letter-spacing: .5px;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 70px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 900;
  background: var(--gradient-cyber);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-stat .label {
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* === QQ Contact === */
.contact-card { padding: 60px 0 30px; }
.qq-box {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 36px 40px;
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  text-align: center;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.qq-box::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  opacity: .35;
  z-index: -1;
  filter: blur(14px);
  animation: borderGlow 4s ease-in-out infinite alternate;
}
@keyframes borderGlow { from { opacity: .25; } to { opacity: .55; } }
.qq-box h2 {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 1px;
  color: var(--text-1);
  margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.qq-box h2 .qq-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--gradient-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; box-shadow: 0 0 16px rgba(255, 106, 0, .5);
}
.qq-number {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 36px;
  letter-spacing: 4px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  user-select: all;
  cursor: pointer;
  transition: all .25s;
  text-shadow: 0 0 30px rgba(255, 45, 117, 0.5);
}
.qq-number:hover { transform: scale(1.05); filter: brightness(1.2); }
.qq-box p { color: var(--text-2); font-size: 14px; margin-top: 12px; }
.qq-copy-tip { font-size: 12px; color: var(--text-3); margin-top: 6px; letter-spacing: 1px; }

/* === Section Title === */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  text-align: center;
  margin: 80px 0 16px;
  letter-spacing: 1px;
  position: relative;
  background: linear-gradient(180deg, #fff 0%, #aab 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-subtitle {
  text-align: center;
  color: var(--text-3);
  font-size: 15px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 50px;
}

/* === Products === */
.products { padding: 30px 0 60px; position: relative; }
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.product-card {
  position: relative;
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  overflow: hidden;
  transition: all .35s cubic-bezier(.2,.8,.2,1);
  cursor: pointer;
  isolation: isolate;
}
.product-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent 0deg, var(--neon-2) 90deg, transparent 180deg, var(--neon-3) 270deg, transparent 360deg);
  opacity: 0;
  transition: opacity .4s;
  z-index: -2;
  animation: spin 6s linear infinite;
}
.product-card::after {
  content: '';
  position: absolute;
  inset: 1px;
  background: linear-gradient(180deg, rgba(20, 24, 48, .9) 0%, rgba(10, 13, 26, .95) 100%);
  border-radius: calc(var(--radius-lg) - 1px);
  z-index: -1;
}
@keyframes spin { to { transform: rotate(360deg); } }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: transparent; }
.product-card:hover::before { opacity: .5; }

.product-card .badge {
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 255, 163, 0.15);
  color: var(--neon-5);
  border: 1px solid rgba(0, 255, 163, 0.3);
}
.product-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 14px;
  line-height: 1.4;
}
.product-card h3 a { color: var(--text-1); }
.product-card h3 a:hover { color: var(--neon-1); }

.product-card .price {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  margin: 14px 0;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 1px;
}
.product-card .price .currency { font-size: 16px; opacity: .8; vertical-align: super; }

.product-card .remark {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.65;
  min-height: 44px;
  margin-bottom: 18px;
}

.product-card .actions { display: flex; gap: 10px; }
.product-card .actions .btn { flex: 1; }

/* === FAQ === */
.faq { padding: 80px 0; }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}
.faq-item {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.faq-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transition: transform .3s;
  transform-origin: bottom;
}
.faq-item:hover { border-color: var(--border-strong); transform: translateX(4px); }
.faq-item:hover::before { transform: scaleY(1); transform-origin: top; }
.faq-item h3 {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--text-1);
  margin-bottom: 8px;
  letter-spacing: .5px;
}
.faq-item h3::before {
  content: 'Q.';
  color: var(--neon-1);
  margin-right: 6px;
  font-weight: 900;
}
.faq-item p { color: var(--text-2); font-size: 14px; line-height: 1.7; }

/* === Features === */
.features { padding: 60px 0; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  text-align: center;
  padding: 32px 22px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .3s;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.feature-icon {
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  border-radius: 18px;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 24px rgba(255, 45, 117, .3);
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text-1);
}
.feature-card p { font-size: 13px; color: var(--text-2); }

/* === Footer === */
.site-footer {
  margin-top: 80px;
  padding: 60px 0 30px;
  background: rgba(5, 6, 13, 0.6);
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-2), transparent);
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 2px;
  background: var(--gradient-primary);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 12px;
}
.site-footer p { color: var(--text-3); font-size: 13px; margin: 4px 0; letter-spacing: .5px; }
.site-footer strong { color: var(--text-2); }
.site-footer a { color: var(--text-3); }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .5px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-1);
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.btn:hover { background: rgba(255, 255, 255, 0.08); border-color: var(--neon-3); color: var(--text-1); text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 45, 117, .35);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.3), transparent);
  transition: left .6s;
}
.btn-primary:hover { background: var(--gradient-primary); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 45, 117, .55); }
.btn-primary:hover::after { left: 100%; }

.btn-large { padding: 14px 32px; font-size: 15px; letter-spacing: 1px; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-danger { background: rgba(255, 77, 79, .1); border-color: rgba(255, 77, 79, .4); color: #ff7a7d; }
.btn-danger:hover { background: rgba(255, 77, 79, .25); border-color: #ff4d4f; color: #fff; }

/* === Forms === */
.form {
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 30px;
  max-width: 600px;
  box-shadow: var(--shadow-card);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-1);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.form-group input[type=text],
.form-group input[type=password],
.form-group input[type=number],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(5, 6, 13, 0.6);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 14px;
  font-family: inherit;
  transition: all .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--neon-3);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
  background: rgba(5, 6, 13, 0.85);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-3); }
.radio-group { display: flex; gap: 12px; flex-wrap: wrap; }
.radio-group label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: rgba(5, 6, 13, .6);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
  margin-bottom: 0;
  transition: all .2s;
}
.radio-group label:hover { border-color: var(--neon-3); }
.radio-group input[type=radio] { accent-color: var(--neon-1); }
.radio-group label:has(input:checked) { background: rgba(255, 106, 0, .15); border-color: var(--neon-1); color: var(--neon-1); }
.required { color: var(--neon-2); }

/* === Alerts === */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 14px; }
.alert-error { background: rgba(255, 77, 79, .1); border: 1px solid rgba(255, 77, 79, .35); color: #ff8b8d; }
.alert-success { background: rgba(0, 255, 163, .08); border: 1px solid rgba(0, 255, 163, .3); color: var(--neon-5); }

/* === Checkout === */
.checkout { padding: 60px 0; max-width: 720px; }
.checkout h1 {
  font-family: var(--font-display);
  font-size: 32px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff, #aab);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.order-summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.order-summary p { margin: 0; }
.order-summary strong { color: var(--text-3); font-size: 13px; letter-spacing: 1px; }
.order-summary .price {
  font-family: var(--font-display);
  font-size: 28px;
  background: var(--gradient-gold);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-weight: 900;
}

/* === Product Detail === */
.product-detail { padding: 60px 0; max-width: 900px; }
.product-detail h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  margin-bottom: 18px;
  background: linear-gradient(135deg, #fff 0%, #ff6a00 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1.2;
}
.price-large {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 900;
  margin-bottom: 28px;
  background: var(--gradient-gold);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 20px rgba(255, 216, 107, .25));
}
.remark-box {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
}
.remark-box h2 {
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--neon-3);
  letter-spacing: 1px;
}
.remark-box pre { white-space: pre-wrap; font-family: inherit; color: var(--text-2); line-height: 1.8; }
.product-detail .actions { display: flex; gap: 12px; margin-bottom: 24px; }

.contact-tip {
  margin-top: 24px;
  padding: 16px 20px;
  background: rgba(0, 229, 255, .06);
  border: 1px solid rgba(0, 229, 255, .25);
  border-radius: var(--radius);
  color: var(--text-2);
  font-size: 14px;
}
.contact-tip strong { color: var(--neon-3); letter-spacing: 1px; }

/* === Pay Result === */
.pay-result { padding: 100px 0; text-align: center; max-width: 600px; }
.pay-result h1 {
  font-family: var(--font-display);
  font-size: 42px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.pay-result h1.success {
  background: linear-gradient(135deg, var(--neon-5), var(--neon-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pay-result h1.error {
  background: linear-gradient(135deg, #ff4d4f, #ff8b8d);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.order-info {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 0 auto 24px;
  text-align: left;
}
.order-info p { margin: 8px 0; color: var(--text-2); font-size: 15px; }
.order-info strong { color: var(--text-3); display: inline-block; min-width: 90px; font-weight: 500; }
.tip { color: var(--text-2); margin-bottom: 24px; line-height: 1.8; }

/* === 404/500 === */
.error-page { padding: 120px 0; text-align: center; }
.error-page h1 {
  font-family: var(--font-display);
  font-size: 120px;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 40px rgba(255, 45, 117, .4));
  letter-spacing: 4px;
}
.error-page p { color: var(--text-2); font-size: 18px; margin-bottom: 28px; }

.empty { text-align: center; color: var(--text-3); padding: 50px; }

/* ============================================================
   Admin Panel
   ============================================================ */
.admin-body { background: var(--bg-0); color: var(--text-1); }
.admin-header {
  background: rgba(10, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-strong);
  position: sticky; top: 0; z-index: 100;
}
.admin-header .logo {
  background: var(--gradient-cyber);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.admin-header .logo::before { content: '🛡'; -webkit-text-fill-color: var(--neon-3); }
.admin-header .nav-links a { color: var(--text-2); }
.admin-header .nav-links a:hover { color: var(--text-1); }
.admin-header .logout { color: var(--neon-2) !important; }

.admin-main { padding: 40px 24px; max-width: 1400px; margin: 0 auto; }
.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; flex-wrap: wrap; gap: 12px; }
.page-head h1 {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #fff, #aab);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Tables */
.data-table {
  width: 100%;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius);
  overflow: hidden;
}
.data-table th, .data-table td {
  padding: 14px 18px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.data-table th {
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-3);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.data-table tbody tr { transition: background .15s; }
.data-table tbody tr:hover { background: rgba(255, 255, 255, 0.03); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table .empty { color: var(--text-3); padding: 40px; text-align: center; }

.status-pending { color: #faad14; }
.status-paid { color: var(--neon-3); }
.status-completed { color: var(--neon-5); }
.status-failed { color: #ff7a7d; }
[class*='status-'] { font-family: var(--font-display); font-size: 12px; letter-spacing: 1px; padding: 3px 10px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid currentColor; opacity: .9; }

.filter-form { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.filter-form input, .filter-form select {
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-1); font-size: 14px;
}
.filter-form input:focus, .filter-form select:focus { outline: none; border-color: var(--neon-3); }
.admin-form { max-width: 760px; }

/* Admin Login */
.admin-login-body {
  background: var(--bg-0);
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: 20px;
}
.admin-login-body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0, 229, 255, .25), transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(177, 75, 255, .25), transparent 50%),
    var(--bg-0);
}
.admin-login-body::after {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(140, 160, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 160, 255, 0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000, transparent);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000, transparent);
}
.login-box {
  position: relative;
  background: var(--surface);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--border-strong);
  padding: 44px 40px;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-card), 0 0 60px rgba(0, 229, 255, .15);
  z-index: 1;
}
.login-box::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: var(--gradient-cyber);
  z-index: -1;
  opacity: .4;
  filter: blur(12px);
}
.login-box h1 {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 2px;
  text-align: center;
  margin-bottom: 28px;
  background: var(--gradient-cyber);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.login-box .form { box-shadow: none; padding: 0; background: transparent; border: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.login-box .back { text-align: center; margin-top: 20px; }
.login-box .back a { color: var(--text-3); font-size: 13px; }
.login-box .back a:hover { color: var(--neon-3); }

/* === Responsive === */
@media (max-width: 768px) {
  .hero { padding: 80px 0 60px; }
  .hero-stats { gap: 30px; margin-top: 40px; }
  .hero-stat .num { font-size: 28px; }
  .nav-links { display: none; }
  .container { padding: 0 16px; }
  .qq-box { padding: 28px 20px; }
  .qq-number { font-size: 26px; letter-spacing: 2px; }
  .price-large { font-size: 38px; }
  .product-card { padding: 22px 20px; }
  .form { padding: 24px 20px; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 8px 10px; }
  .order-summary { flex-direction: column; align-items: flex-start; }
}

/* === Scroll Reveal === */
.reveal { opacity: 0; transform: translateY(30px); transition: all .8s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* === Selection === */
::selection { background: rgba(255, 45, 117, .35); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--neon-1), var(--neon-2)); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, var(--neon-2), var(--neon-4)); }

/* === Schedule (Service Hours) === */
.schedule { padding: 60px 0 30px; }
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}
.schedule-card {
  position: relative;
  padding: 18px 12px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: all .3s;
}
.schedule-card.active {
  border-color: rgba(0, 255, 163, 0.3);
  box-shadow: 0 0 24px rgba(0, 255, 163, 0.08);
}
.schedule-card.active::before {
  content: '';
  position: absolute;
  top: 8px; right: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--neon-5);
  box-shadow: 0 0 10px var(--neon-5);
  animation: pulseDot 1.5s ease-in-out infinite;
}
.schedule-card.inactive { opacity: .55; }
.schedule-card:hover { transform: translateY(-4px); }
.schedule-day {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 10px;
  color: var(--text-1);
}
.schedule-card.active .schedule-day {
  background: var(--gradient-primary);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.schedule-time {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.03);
  padding: 4px 6px;
  border-radius: 6px;
  margin: 4px 0;
  letter-spacing: .5px;
}
.schedule-time.off { color: var(--text-3); background: transparent; font-style: italic; }
.schedule-empty {
  text-align: center;
  padding: 40px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.schedule-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: .5;
}
.schedule-empty p { color: var(--text-2); font-size: 16px; }

@media (max-width: 768px) {
  .schedule-grid { grid-template-columns: repeat(2, 1fr); }
}

/* === Appointment hint === */
.schedule-hint {
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px dashed rgba(0, 229, 255, 0.25);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.8;
}
.schedule-hint strong { color: var(--neon-3); margin-right: 8px; letter-spacing: 1px; }
.slot-chip {
  display: inline-block;
  padding: 3px 10px;
  margin: 2px 4px 2px 0;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--neon-3);
  letter-spacing: .5px;
}
.appt-feedback {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  min-height: 20px;
}
.appt-feedback.ok { color: var(--neon-5); }
.appt-feedback.err { color: #ff8b8d; }

input[type=time], input[type=datetime-local] {
  width: 100%;
  padding: 12px 16px;
  background: rgba(5, 6, 13, 0.6);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 14px;
  font-family: inherit;
  color-scheme: dark;
  transition: all .2s;
}
input[type=time]:focus, input[type=datetime-local]:focus {
  outline: none;
  border-color: var(--neon-3);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

/* ============================================================
   Responsive Breakpoints
   ============================================================ */

/* Tablet (≤ 768px) */
@media (max-width: 768px) {
  :root {
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
  }
  
  .container { padding: 0 12px; }
  
  .site-header .nav { height: 56px; }
  .logo { font-size: 18px; }
  .nav-links { display: none; }
  
  .hero { padding: 60px 0 40px; }
  .hero h1 { font-size: 26px; }
  .hero .lead { font-size: 14px; margin-bottom: 24px; }
  .btn-large { padding: 12px 24px; font-size: 14px; }
  .hero-cta { gap: 10px; }
  
  .qq-box { padding: 20px 16px; }
  .qq-number { font-size: 24px; letter-spacing: 2px; }
  .qq-box h2 { font-size: 18px; }
  
  .section-title { font-size: 22px; margin: 40px 0 12px; }
  .section-subtitle { font-size: 12px; margin-bottom: 24px; }
  
  .schedule-grid { grid-template-columns: repeat(2, 1fr); }
  .schedule-card { padding: 12px 8px; }
  .schedule-day { font-size: 12px; margin-bottom: 6px; }
  .schedule-time { font-size: 10px; padding: 2px 4px; }
  
  .product-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-card { padding: 20px 16px; }
  .product-card h3 { font-size: 17px; }
  .product-card .price { font-size: 26px; }
  
  .faq-grid { grid-template-columns: 1fr; }
  .faq-item { padding: 18px 16px; }
  .faq-item h3 { font-size: 15px; }
  .faq-item p { font-size: 13px; }
  
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .feature-card { padding: 20px 12px; }
  .feature-icon { width: 48px; height: 48px; font-size: 22px; }
  .feature-card h3 { font-size: 15px; }
  .feature-card p { font-size: 12px; }
  
  .form { padding: 20px 16px; }
  .form-group input[type=text],
  .form-group input[type=password],
  .form-group input[type=number],
  .form-group textarea,
  .form-group select { padding: 10px 12px; font-size: 13px; }
  .radio-group { flex-direction: column; }
  .radio-group label { width: 100%; justify-content: flex-start; }
  
  .checkout { max-width: 100%; }
  .order-summary { flex-direction: column; align-items: flex-start; gap: 8px; }
  .order-summary .price { font-size: 24px; }
  
  .product-detail h1 { font-size: 24px; }
  .price-large { font-size: 36px; }
  
  .pay-result { padding: 60px 0; }
  .pay-result h1 { font-size: 32px; }
  
  .error-page h1 { font-size: 80px; }
  .error-page p { font-size: 16px; }
  
  .admin-main { padding: 20px 12px; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 8px 6px; }
  
  .login-box { padding: 32px 24px; }
  .login-box h1 { font-size: 22px; }
}

/* Mobile (≤ 480px) */
@media (max-width: 480px) {
  .hero h1 { font-size: 22px; line-height: 1.3; }
  .hero .lead { font-size: 13px; }
  
  .qq-number { font-size: 20px; }
  
  .section-title { font-size: 20px; }
  
  .feature-grid { grid-template-columns: 1fr; }
  
  .schedule-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .schedule-card { padding: 10px 6px; }
  
  .product-card .price { font-size: 24px; }
  
  .hero-cta { flex-direction: column; }
  .btn-large { width: 100%; }
  
  .schedule-empty { padding: 24px 16px; }
  .schedule-empty .empty-icon { font-size: 36px; }
  .schedule-empty p { font-size: 14px; }
}

/* Large Tablet (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .container { max-width: 900px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Desktop (> 1024px) */
@media (min-width: 1025px) {
  .hero h1 { font-size: clamp(42px, 5vw, 68px); }
}

/* Touch optimization */
@media (hover: none) {
  .btn:active { transform: scale(0.98); }
  .product-card:active { transform: scale(0.99); }
}

/* Dark mode native support */
@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; }
}