@charset "UTF-8";
/* ===================================================================
   浴火凤凰传奇 - 样式表
   主背景：#1a0505 深黑底 + 火焰粒子 + 凤凰翅膀装饰
   主色调：#ff4500 橙红 / #ffd700 金色 / #ff6347 番茄红
   设计理念：烈焰燃烧 · 凤凰涅槃 · 动感倾斜 · 燃烧边框
   =================================================================== */

/* ---------- 全局变量 ---------- */
:root {
  /* 深色背景 */
  --bg-deep: #1a0505;
  --bg-deep-2: #2d0a0a;
  --bg-deep-3: #0f0202;
  --bg-card: rgba(45, 10, 5, 0.75);
  --bg-card-hover: rgba(70, 18, 8, 0.9);

  /* 凤凰配色 */
  --phoenix-red: #ff4500;
  --phoenix-red-dark: #cc3700;
  --phoenix-orange: #ff6347;
  --phoenix-gold: #ffd700;
  --phoenix-amber: #ffb347;
  --phoenix-ember: #ff8c00;

  /* 文字颜色 */
  --text: #ffe8d0;
  --text-dim: #c9a078;
  --text-bright: #ffd700;
  --text-glow: #ffaa55;

  /* 边框 - 燃烧效果 */
  --border-flame: rgba(255, 69, 0, 0.4);
  --border-flame-hover: rgba(255, 215, 0, 0.7);
  --border-gold: rgba(255, 215, 0, 0.35);

  /* 阴影 - 火焰发光 */
  --shadow-flame: 0 4px 20px rgba(255, 69, 0, 0.15);
  --shadow-flame-hover: 0 10px 40px rgba(255, 69, 0, 0.35);
  --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.3);
  --shadow-glow-strong: 0 0 30px rgba(255, 140, 0, 0.5), 0 0 60px rgba(255, 69, 0, 0.3);
  --shadow-gold: 0 0 15px rgba(255, 215, 0, 0.4);

  /* 其他 */
  --radius: 6px;
  --maxw: 1200px;
  --nav-h: 68px;
  --skew-angle: -3deg;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Helvetica Neue", "Impact", sans-serif;
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  background: var(--bg-deep);
  min-height: 100vh;
  font-weight: 400;
}

a {
  color: var(--phoenix-orange);
  text-decoration: none;
  transition: color .25s, text-shadow .25s;
}
a:hover {
  color: var(--phoenix-gold);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* ---------- 火焰背景层 ---------- */
.phoenix-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(255, 69, 0, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 30%, rgba(255, 140, 0, 0.1) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 69, 0, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-deep-3) 0%, var(--bg-deep) 40%, var(--bg-deep-2) 100%);
  background-attachment: fixed;
}

.flame-layer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  pointer-events: none;
}
.flame-layer-1 {
  background:
    radial-gradient(ellipse 80% 50% at 50% 100%, rgba(255, 69, 0, 0.12) 0%, transparent 70%);
  animation: flameFlicker 4s ease-in-out infinite;
}
.flame-layer-2 {
  background:
    radial-gradient(ellipse 60% 40% at 30% 100%, rgba(255, 140, 0, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 35% at 70% 100%, rgba(255, 99, 71, 0.06) 0%, transparent 55%);
  animation: flameFlicker 5s ease-in-out infinite reverse;
}
@keyframes flameFlicker {
  0%, 100% { opacity: 0.8; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.05); }
}

/* 火星粒子场 */
.ember-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.ember {
  position: absolute;
  bottom: -10px;
  border-radius: 50%;
  background: radial-gradient(circle, #fff8dc 0%, var(--phoenix-gold) 30%, var(--phoenix-ember) 60%, var(--phoenix-red) 100%);
  box-shadow:
    0 0 6px var(--phoenix-amber),
    0 0 12px var(--phoenix-red),
    0 0 18px rgba(255, 69, 0, 0.5);
  animation: emberRise linear infinite;
  opacity: 0;
}
@keyframes emberRise {
  0% {
    transform: translateY(0) translateX(0) scale(1) rotate(0deg);
    opacity: 0;
  }
  10% { opacity: 1; }
  25% { transform: translateY(-25vh) translateX(12px) scale(0.9); }
  50% { transform: translateY(-50vh) translateX(-8px) scale(0.7) rotate(180deg); opacity: 0.7; }
  75% { transform: translateY(-75vh) translateX(10px) scale(0.45); opacity: 0.4; }
  100% {
    transform: translateY(-110vh) translateX(-5px) scale(0.15) rotate(360deg);
    opacity: 0;
  }
}

/* 内容层在背景之上 */
.navbar, .hero, section, .footer, .service-fab, .back-top {
  position: relative;
  z-index: 2;
}

/* ===================================================================
   1. 固定导航栏 - 锐利有冲击力
   =================================================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(26, 5, 5, 0.95) 0%, rgba(26, 5, 5, 0.75) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, transparent, var(--phoenix-red), var(--phoenix-gold), var(--phoenix-red), transparent) 1;
  transition: background .3s, box-shadow .3s;
}
.navbar.scrolled {
  background: rgba(26, 5, 5, 0.98);
  box-shadow: 0 4px 30px rgba(255, 69, 0, 0.25);
}
.nav-container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 3px;
  position: relative;
}
.logo-text {
  background: linear-gradient(180deg, var(--phoenix-gold) 0%, var(--phoenix-amber) 50%, var(--phoenix-red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(255, 69, 0, 0.6));
}
.logo:hover .logo-text {
  filter: drop-shadow(0 0 16px rgba(255, 215, 0, 0.7));
}
.nav-menu {
  display: flex;
  gap: 4px;
}
.nav-link {
  display: block;
  padding: 10px 22px;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  position: relative;
  transition: color .25s;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
}
.nav-link::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.15), rgba(255, 215, 0, 0.1));
  opacity: 0;
  transition: opacity .25s;
  z-index: -1;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 4px;
  width: 0; height: 3px;
  background: linear-gradient(90deg, var(--phoenix-red), var(--phoenix-gold));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--phoenix-orange);
  transition: width .3s, left .3s;
}
.nav-link:hover {
  color: var(--phoenix-gold);
}
.nav-link:hover::before { opacity: 1; }
.nav-link:hover::after { width: 60%; left: 20%; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px; height: 44px;
  background: rgba(255, 69, 0, 0.1);
  border: 1px solid var(--border-flame);
  border-radius: 6px;
  cursor: pointer;
  padding: 10px;
}
.nav-toggle span {
  display: block;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--phoenix-gold), var(--phoenix-orange));
  border-radius: 2px;
  box-shadow: 0 0 4px var(--phoenix-orange);
  transition: transform .3s, opacity .3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===================================================================
   2. 全屏 Hero - 凤凰涅槃
   =================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 80px;
  overflow: hidden;
  position: relative;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 50% 55%, rgba(255, 69, 0, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 70%, rgba(255, 140, 0, 0.15) 0%, transparent 40%),
    linear-gradient(180deg, transparent 0%, rgba(26, 5, 5, 0.8) 100%);
  animation: heroGlow 5s ease-in-out infinite;
}
@keyframes heroGlow {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 1; }
}

/* 凤凰翅膀装饰 */
.hero-phoenix {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 500px;
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
}
.phoenix-wing {
  position: absolute;
  top: 50%;
  width: 400px;
  height: 350px;
  background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.6) 0%, rgba(255, 69, 0, 0.3) 40%, transparent 70%);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}
.phoenix-wing-left {
  left: 0;
  transform: translateY(-50%) rotate(-25deg) scaleX(-1);
  animation: wingFlap 3s ease-in-out infinite;
}
.phoenix-wing-right {
  right: 0;
  transform: translateY(-50%) rotate(25deg);
  animation: wingFlap 3s ease-in-out infinite 0.3s;
}
@keyframes wingFlap {
  0%, 100% { transform: translateY(-50%) rotate(var(--wing-rot, 25deg)) scaleY(1); }
  50% { transform: translateY(-50%) rotate(calc(var(--wing-rot, 25deg) + 10deg)) scaleY(0.9); }
}
.phoenix-wing-left { --wing-rot: -25deg; }
.phoenix-wing-right { --wing-rot: 25deg; }

.hero-inner {
  max-width: 860px;
  position: relative;
}
.hero-version {
  display: inline-block;
  padding: 6px 24px;
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--phoenix-gold);
  border: 1px solid var(--border-flame);
  background: rgba(26, 5, 5, 0.7);
  position: relative;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  box-shadow: var(--shadow-glow);
}
.hero-title {
  font-size: clamp(48px, 9vw, 96px);
  font-weight: 900;
  letter-spacing: 8px;
  line-height: 1.05;
  margin-bottom: 20px;
  /* 火焰渐变文字 */
  background: linear-gradient(180deg,
    #fff8dc 0%,
    var(--phoenix-gold) 25%,
    var(--phoenix-amber) 50%,
    var(--phoenix-orange) 75%,
    var(--phoenix-red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255, 69, 0, 0.7)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
  animation: titleBurn 4s ease-in-out infinite;
  position: relative;
}
@keyframes titleBurn {
  0%, 100% {
    filter: drop-shadow(0 0 20px rgba(255, 69, 0, 0.7)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
  }
  50% {
    filter: drop-shadow(0 0 30px rgba(255, 140, 0, 0.9)) drop-shadow(0 0 50px rgba(255, 69, 0, 0.5)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
  }
}
.hero-slogan {
  font-size: clamp(18px, 2.8vw, 24px);
  color: var(--text-glow);
  letter-spacing: 4px;
  margin-bottom: 36px;
  font-weight: 500;
  text-shadow: 0 0 12px rgba(255, 140, 0, 0.4);
}
.hero-opentime {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 14px 32px;
  margin-bottom: 32px;
  border: 2px solid var(--border-flame);
  background: rgba(26, 5, 5, 0.75);
  position: relative;
  clip-path: polygon(5% 0, 100% 0, 95% 100%, 0 100%);
  box-shadow:
    0 0 20px rgba(255, 69, 0, 0.2),
    inset 0 0 20px rgba(255, 69, 0, 0.05);
}
.hero-opentime::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-gold), var(--phoenix-red));
  z-index: -1;
  clip-path: polygon(5% 0, 100% 0, 95% 100%, 0 100%);
  opacity: 0.5;
  animation: borderBurn 3s linear infinite;
}
@keyframes borderBurn {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.7; }
}
.opentime-label {
  font-size: 15px;
  color: var(--phoenix-orange);
  letter-spacing: 2px;
  font-weight: 600;
}
.opentime-value {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.5));
}

/* ---------- 按钮 - 火焰燃烧效果 ---------- */
.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 10px;
}
.btn {
  display: inline-block;
  padding: 14px 48px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 2px;
  cursor: pointer;
  transition: transform .25s, box-shadow .25s;
  border: none;
  text-align: center;
  position: relative;
  overflow: hidden;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
}
.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember), var(--phoenix-gold));
  background-size: 200% 200%;
  box-shadow:
    0 6px 24px rgba(255, 69, 0, 0.5),
    0 0 30px rgba(255, 140, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  animation: btnFlame 3s ease infinite;
}
@keyframes btnFlame {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.btn-primary:hover {
  color: #ffffff;
  transform: translateY(-4px) scale(1.03);
  box-shadow:
    0 10px 36px rgba(255, 69, 0, 0.65),
    0 0 50px rgba(255, 140, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn-primary .btn-flame {
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left .5s;
}
.btn-primary:hover .btn-flame { left: 100%; }
.btn-text {
  position: relative;
  z-index: 1;
}
.btn-secondary {
  color: var(--phoenix-gold);
  background: rgba(26, 5, 5, 0.8);
  border: 2px solid var(--border-flame);
}
.btn-secondary:hover {
  color: var(--phoenix-gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(255, 69, 0, 0.3);
  border-color: var(--phoenix-gold);
}
.btn-dl {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 12px;
  font-size: 15px;
  color: var(--phoenix-gold);
  background: rgba(255, 69, 0, 0.1);
  border: 1px solid var(--border-flame);
  clip-path: none;
  border-radius: var(--radius);
  font-weight: 700;
}
.btn-dl:hover {
  color: #ffffff;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember));
  box-shadow: 0 4px 18px rgba(255, 69, 0, 0.4);
  border-color: var(--phoenix-gold);
}

/* 向下滚动提示 */
.hero-scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 2px;
  opacity: 0.7;
  animation: scrollBounce 2s ease-in-out infinite;
}
.scroll-arrow {
  width: 24px;
  height: 24px;
  margin: 8px auto 0;
  border-right: 2px solid var(--phoenix-orange);
  border-bottom: 2px solid var(--phoenix-orange);
  transform: rotate(45deg);
  box-shadow: 2px 2px 4px rgba(255, 69, 0, 0.3);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.7; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ===================================================================
   通用区块标题 - 火焰装饰
   =================================================================== */
section { padding: 80px 0; }
.section-title {
  text-align: center;
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 900;
  letter-spacing: 6px;
  margin-bottom: 14px;
  background: linear-gradient(180deg, var(--phoenix-gold) 0%, var(--phoenix-amber) 50%, var(--phoenix-red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 12px rgba(255, 69, 0, 0.5));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: relative;
}
.title-flame-left,
.title-flame-right {
  width: 80px;
  height: 30px;
  background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.6) 0%, rgba(255, 69, 0, 0.3) 50%, transparent 70%);
  border-radius: 50% 50% 50% 50% / 100% 100% 0 0;
}
.title-flame-left { transform: scaleX(-1); }
.section-subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: 16px;
  letter-spacing: 3px;
  margin-bottom: 50px;
}

/* ===================================================================
   3. 倒计时（集成在 Hero 内）- 燃烧数字
   =================================================================== */
.hero-countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.count-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
  padding: 20px 12px;
  background: rgba(26, 5, 5, 0.85);
  border: 1px solid var(--border-flame);
  position: relative;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
  box-shadow:
    0 0 20px rgba(255, 69, 0, 0.2),
    inset 0 0 15px rgba(255, 69, 0, 0.05);
}
.count-item::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--phoenix-gold), transparent);
}
.count-num {
  font-size: clamp(36px, 6.5vw, 58px);
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-ember), var(--phoenix-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(255, 140, 0, 0.7));
}
.count-label {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 3px;
  font-weight: 500;
}
.count-sep {
  font-size: 42px;
  font-weight: 900;
  color: var(--phoenix-red);
  text-shadow: 0 0 12px rgba(255, 69, 0, 0.6);
  animation: sepPulse 1s ease-in-out infinite;
}
@keyframes sepPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.countdown-status {
  text-align: center;
  margin-top: 0;
  margin-bottom: 30px;
  font-size: 17px;
  color: var(--phoenix-orange);
  letter-spacing: 1px;
  min-height: 28px;
  font-weight: 500;
}
.countdown-status.status-live {
  color: var(--phoenix-gold);
  font-weight: 700;
  animation: liveGlow 1.2s ease-in-out infinite;
  filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.6));
}
@keyframes liveGlow {
  0%, 100% { opacity: 0.85; filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.6)); }
  50% { opacity: 1; filter: drop-shadow(0 0 14px rgba(255, 215, 0, 0.9)); }
}

/* ===================================================================
   4. 服务器信息卡 - 倾斜动感设计
   =================================================================== */
.server-info {
  padding: 60px 0;
  position: relative;
  background: linear-gradient(180deg, transparent 0%, rgba(45, 10, 10, 0.5) 50%, transparent 100%);
}
.skew-decoration {
  position: absolute;
  left: 0; right: 0;
  height: 60px;
  background: var(--bg-deep);
  z-index: -1;
}
.skew-top {
  top: -30px;
  transform: skewY(var(--skew-angle));
  border-top: 2px solid var(--border-flame);
}
.skew-bottom {
  bottom: -30px;
  transform: skewY(var(--skew-angle));
  border-bottom: 2px solid var(--border-flame);
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-flame);
  position: relative;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  clip-path: polygon(6% 0, 100% 0, 94% 100%, 0 100%);
  overflow: hidden;
}
.info-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--phoenix-gold), transparent);
  opacity: 0;
  transition: opacity .3s;
}
.info-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-flame-hover);
  box-shadow:
    var(--shadow-flame-hover),
    0 0 30px rgba(255, 140, 0, 0.25);
}
.info-card:hover::before { opacity: 1; }
.info-icon-wrap {
  width: 70px;
  height: 70px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.2), rgba(255, 215, 0, 0.1));
  border: 1px solid var(--border-flame);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.info-icon {
  font-size: 32px;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 8px rgba(255, 69, 0, 0.6));
}
.info-label {
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.info-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--phoenix-gold);
  text-shadow: 0 0 8px rgba(255, 215, 0, 0.3);
}
.info-none {
  color: var(--text-dim);
  font-weight: 400;
}
.group-link {
  color: var(--phoenix-gold);
  font-weight: 600;
}
.group-link:hover {
  color: var(--phoenix-amber);
  text-shadow: 0 0 10px rgba(255, 140, 0, 0.5);
}

/* ===================================================================
   5. 游戏特色 - 燃烧边框
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  padding: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-flame);
  position: relative;
  transition: transform .3s, box-shadow .3s;
  overflow: hidden;
}
.feature-border-glow {
  position: absolute;
  inset: -1px;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-gold), var(--phoenix-red));
  z-index: -1;
  opacity: 0;
  transition: opacity .3s;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow:
    var(--shadow-flame-hover),
    0 0 40px rgba(255, 140, 0, 0.2);
}
.feature-card:hover .feature-border-glow {
  opacity: 0.5;
  animation: borderGlow 2s linear infinite;
}
@keyframes borderGlow {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(30deg); }
}
.feature-num-wrap {
  position: relative;
  flex-shrink: 0;
}
.feature-num {
  width: 54px; height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: #ffffff;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember), var(--phoenix-gold));
  background-size: 200% 200%;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  box-shadow:
    0 4px 16px rgba(255, 69, 0, 0.5),
    0 0 20px rgba(255, 140, 0, 0.3);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  animation: numGlow 3s ease infinite;
}
@keyframes numGlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.feature-num-glow {
  position: absolute;
  inset: -6px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.4) 0%, transparent 70%);
  z-index: -1;
  animation: numPulse 2s ease-in-out infinite;
}
@keyframes numPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.2); }
}
.feature-text {
  flex: 1;
  font-size: 16px;
  color: var(--text);
  line-height: 1.9;
  padding-top: 6px;
}
.feature-desc {
  color: var(--text);
  line-height: 1.9;
}

/* ===================================================================
   6. 下载中心 - 光晕环绕
   =================================================================== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.download-card {
  padding: 36px 24px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-flame);
  position: relative;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  overflow: hidden;
}
.download-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--phoenix-red), var(--phoenix-gold), var(--phoenix-red));
  background-size: 200% 100%;
  animation: topBar 3s linear infinite;
}
@keyframes topBar {
  0% { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}
.download-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-flame-hover);
  box-shadow:
    var(--shadow-flame-hover),
    0 0 40px rgba(255, 140, 0, 0.3);
}
.dl-icon-wrap {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dl-icon {
  font-size: 44px;
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(255, 69, 0, 0.6));
}
.dl-icon-ring {
  position: absolute;
  inset: 0;
  border: 2px solid var(--border-flame);
  border-radius: 50%;
  animation: ringRotate 8s linear infinite;
}
.dl-icon-ring::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: var(--phoenix-gold);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--phoenix-gold);
}
@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.dl-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--phoenix-gold);
  margin-bottom: 14px;
  letter-spacing: 1px;
  text-shadow: 0 0 8px rgba(255, 215, 0, 0.3);
}

/* ===================================================================
   7. 客服中心
   =================================================================== */
.service-section {
  background: linear-gradient(180deg, transparent 0%, rgba(45, 10, 10, 0.4) 50%, transparent 100%);
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  padding: 36px 28px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-flame);
  transition: transform .3s, box-shadow .3s;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--phoenix-gold), transparent);
  opacity: 0;
  transition: opacity .3s;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-flame-hover);
}
.service-card:hover::after { opacity: 1; }
.service-icon {
  font-size: 48px;
  margin-bottom: 16px;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 12px rgba(255, 69, 0, 0.5));
}
.service-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--phoenix-gold);
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.service-item {
  padding: 10px 16px;
  font-size: 15px;
  color: var(--phoenix-orange);
  background: rgba(255, 69, 0, 0.08);
  border: 1px solid var(--border-flame);
  border-radius: var(--radius);
  transition: all .25s;
  font-weight: 500;
}
.service-item:hover {
  color: #ffffff;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember));
  box-shadow: 0 0 16px rgba(255, 69, 0, 0.4);
}
.service-empty {
  color: var(--text-dim);
  background: transparent;
  border-style: dashed;
}

/* ===================================================================
   8. 友情链接
   =================================================================== */
.links { padding: 60px 0; }
.links-title {
  text-align: center;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--phoenix-gold);
  margin-bottom: 28px;
  text-shadow: 0 0 10px rgba(255, 69, 0, 0.4);
}
.links-box {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.link-item {
  padding: 8px 24px;
  font-size: 14px;
  color: var(--text-dim);
  background: var(--bg-card);
  border: 1px solid var(--border-flame);
  transition: all .25s;
  position: relative;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
}
.link-item:hover {
  color: var(--phoenix-gold);
  border-color: var(--border-flame-hover);
  box-shadow: 0 0 16px rgba(255, 140, 0, 0.3);
  background: rgba(70, 18, 8, 0.8);
}
.links-empty { color: var(--text-dim); }

/* ===================================================================
   9. 页脚 - 火焰顶部装饰
   =================================================================== */
.footer {
  padding: 60px 0 30px;
  background: linear-gradient(180deg, transparent 0%, rgba(15, 2, 2, 0.95) 30%);
  position: relative;
}
.footer-flame-top {
  position: absolute;
  top: 0;
  left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--phoenix-red), var(--phoenix-gold), var(--phoenix-red), transparent);
  box-shadow: 0 0 20px rgba(255, 69, 0, 0.6);
}
.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px dashed rgba(255, 69, 0, 0.25);
}
.footer-brand h3 {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 4px;
  background: linear-gradient(180deg, var(--phoenix-gold), var(--phoenix-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(255, 69, 0, 0.4));
  margin-bottom: 8px;
}
.footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  letter-spacing: 1px;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.contact-val {
  color: var(--phoenix-orange);
  font-weight: 600;
}
.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
}
.footer-bottom p { margin-bottom: 6px; }

/* ===================================================================
   10. 悬浮客服面板
   =================================================================== */
.service-fab {
  position: fixed;
  right: 28px;
  bottom: 100px;
  z-index: 99;
}
.fab-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 2px solid rgba(255, 215, 0, 0.4);
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember), var(--phoenix-gold));
  background-size: 200% 200%;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  box-shadow:
    0 4px 20px rgba(255, 69, 0, 0.5),
    0 0 30px rgba(255, 140, 0, 0.35);
  transition: transform .25s, box-shadow .25s;
  animation: btnFlame 3s ease infinite;
}
.fab-btn-icon { font-size: 18px; }
.fab-btn-text { font-size: 11px; font-weight: 700; letter-spacing: 1px; }
.fab-btn:hover {
  transform: scale(1.1);
  box-shadow:
    0 6px 28px rgba(255, 69, 0, 0.65),
    0 0 40px rgba(255, 140, 0, 0.5);
}
.fab-panel {
  position: absolute;
  right: 0;
  bottom: 76px;
  width: 260px;
  padding: 0;
  background: rgba(26, 5, 5, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-flame);
  border-radius: 8px;
  box-shadow:
    0 12px 40px rgba(255, 69, 0, 0.25),
    0 0 30px rgba(255, 140, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.95);
  transition: opacity .3s, transform .3s, visibility .3s;
  overflow: hidden;
}
.service-fab.open .fab-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.fab-header {
  position: relative;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-flame);
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.15), rgba(255, 215, 0, 0.08));
}
.fab-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--phoenix-gold);
  text-align: center;
  letter-spacing: 3px;
  position: relative;
  z-index: 1;
}
.fab-flame {
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--phoenix-gold), transparent);
}
.fab-qq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px dashed rgba(255, 69, 0, 0.15);
}
.fab-qq-item {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  text-align: center;
  color: var(--phoenix-orange);
  background: rgba(255, 69, 0, 0.08);
  border: 1px solid var(--border-flame);
  border-radius: 6px;
  transition: all .25s;
  font-weight: 500;
}
.fab-qq-item:hover {
  color: #ffffff;
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember));
  box-shadow: 0 0 16px rgba(255, 69, 0, 0.4);
}
.fab-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  font-size: 14px;
  border-bottom: 1px dotted rgba(255, 69, 0, 0.12);
}
.fab-row:last-child { border-bottom: none; }
.fab-label { color: var(--text-dim); }
.fab-val { color: var(--phoenix-orange); font-weight: 600; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 50px; height: 50px;
  border-radius: 50%;
  border: 1px solid var(--border-flame);
  background: rgba(26, 5, 5, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--phoenix-gold);
  font-size: 22px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s;
  z-index: 98;
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  box-shadow: 0 0 20px rgba(255, 69, 0, 0.4);
  background: linear-gradient(135deg, var(--phoenix-red), var(--phoenix-ember));
  color: #ffffff;
  border-color: var(--phoenix-gold);
}

/* ===================================================================
   滚动渐入动画
   =================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .8s cubic-bezier(0.4, 0, 0.2, 1), transform .8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.reveal-in {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================================================
   响应式 - 平板
   =================================================================== */
@media (max-width: 992px) {
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-phoenix { width: 600px; height: 350px; }
  .phoenix-wing { width: 260px; height: 230px; }
}

/* ===================================================================
   响应式 - 手机
   =================================================================== */
@media (max-width: 768px) {
  :root { --nav-h: 62px; }

  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--nav-h); right: 0;
    flex-direction: column;
    width: 220px;
    padding: 16px;
    gap: 6px;
    background: rgba(26, 5, 5, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 2px solid var(--border-flame);
    border-bottom: 2px solid var(--border-flame);
    box-shadow: -8px 12px 32px rgba(255, 69, 0, 0.15);
    transform: translateX(110%);
    transition: transform .35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-link {
    padding: 14px 18px;
    clip-path: none;
    border-left: 3px solid transparent;
  }
  .nav-link:hover {
    border-left-color: var(--phoenix-gold);
    background: rgba(255, 69, 0, 0.1);
  }
  .nav-link::after { display: none; }
  .nav-link::before { display: none; }

  .hero { min-height: 90vh; padding-top: 90px; }
  .hero-phoenix { width: 400px; height: 250px; }
  .phoenix-wing { width: 170px; height: 150px; }
  .hero-title { letter-spacing: 4px; }
  .hero-slogan { letter-spacing: 2px; }
  .hero-opentime {
    flex-direction: column;
    gap: 8px;
    padding: 12px 20px;
    clip-path: none;
    border-radius: var(--radius);
  }
  .hero-buttons { gap: 14px; }
  .btn { padding: 12px 36px; font-size: 15px; }

  section { padding: 60px 0; }
  .section-title { letter-spacing: 3px; gap: 12px; }
  .title-flame-left, .title-flame-right { width: 50px; height: 20px; }

  .info-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }

  .count-item { min-width: 72px; padding: 14px 8px; }
  .count-sep { font-size: 30px; }

  .feature-card { padding: 24px; gap: 16px; }
  .feature-num { width: 46px; height: 46px; font-size: 18px; }

  .footer-main { flex-direction: column; }

  .service-fab { right: 18px; bottom: 86px; }
  .fab-btn { width: 52px; height: 52px; }
  .back-top { right: 18px; bottom: 20px; width: 44px; height: 44px; font-size: 18px; }
}

@media (max-width: 420px) {
  .hero-title { letter-spacing: 2px; font-size: 42px; }
  .btn { padding: 11px 28px; font-size: 14px; }
  .hero-countdown { gap: 8px; }
  .count-item { min-width: 60px; padding: 10px 4px; }
  .count-num { font-size: 28px; }
  .fab-panel { width: 230px; }
}

/* ===================================================================
   增强样式 - 火焰波纹、倒计时发光、按钮缩放、导航高亮
   =================================================================== */

/* --- 火焰波纹背景 --- */
.flame-wave-bg {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  opacity: 0.3;
}

.flame-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 100%, rgba(255, 69, 0, 0.3) 0%, rgba(255, 140, 0, 0.15) 30%, transparent 60%);
  animation: flameWave 8s ease-in-out infinite;
}

.flame-wave.wave-2 {
  animation-delay: -4s;
  opacity: 0.7;
}

@keyframes flameWave {
  0%, 100% {
    transform: translateX(0) scaleY(1);
  }
  50% {
    transform: translateX(-25%) scaleY(1.1);
  }
}

/* --- Hero 标题发光增强 --- */
.hero-title {
  position: relative;
  display: inline-block;
}

.hero-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--phoenix-gold), transparent);
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
}

/* --- 倒计时发光边框 --- */
.hero-countdown {
  position: relative;
  animation: countdownPulse 3s ease-in-out infinite;
}

@keyframes countdownPulse {
  0%, 100% {
    filter: drop-shadow(0 0 10px rgba(255, 69, 0, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.5));
  }
}

.count-item {
  position: relative;
  overflow: hidden;
}

.count-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: countShine 3s ease-in-out infinite;
}

@keyframes countShine {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}

/* --- 按钮点击缩放 --- */
.btn:active {
  transform: scale(0.96);
}

/* --- 区块标题装饰增强 --- */
.section-title {
  position: relative;
}

/* --- 滚动渐入交错延迟 --- */
.reveal:nth-child(1) { transition-delay: 0s; }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal:nth-child(6) { transition-delay: 0.5s; }

/* --- 导航高亮 --- */
.nav-link.active {
  color: var(--phoenix-gold) !important;
  border-bottom-color: var(--phoenix-gold) !important;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}