/* ==========================================================================
   风暴娱乐平台 · 全站样式 —— 「风暴引擎 STORM ENGINE」设计体系
   域名：https://www.fengbaoy.com/
   设计基因：石墨黑工业底 / 熔岩橙主色 / 酸性柠黄信号色 / 硬边直角 /
            切角卡片 / 警示斜纹 / 巨型描边数字 / 环形仪表 / 跑马灯
   差异化自查：非暗夜鎏金(鼎上/PG) · 非深空蓝紫霓虹(长运/运达/辉达)
              · 非量子青蓝浅色(星欧) · 非暖纸赤陶(益达) · 非象牙青玉(泰达)
              · 非纯白红资讯门户(焦点) · 非绛红宫阙(傲世) · 非紫晶星云(万向)
              · 非星穹紫珀(天辰) · 非翡翠玉庭(顺达) · 非圆角玻璃拟态
   命名体系：.fb- 前缀（FengBao）；变量 --void / --ember / --acid / --ice
   断点：1120 / 960 / 720 / 480
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --void: #0b0d10;
  --void-2: #101318;
  --panel: #151920;
  --panel-2: #1b2028;
  --panel-3: #232a34;

  --ember: #ff5a1f;
  --ember-2: #ff7a3d;
  --ember-3: #c93c0c;
  --ember-mist: rgba(255, 90, 31, .12);
  --acid: #d8f24a;
  --acid-2: #e9ff7a;
  --ice: #f2f0e9;
  --mist: #a4abb5;
  --dim: #6e7681;

  --line: rgba(255, 255, 255, .09);
  --line-2: rgba(255, 255, 255, .18);
  --line-ember: rgba(255, 90, 31, .38);

  --grad-ember: linear-gradient(112deg, #ff7a3d 0%, #ff5a1f 48%, #c93c0c 100%);
  --grad-acid: linear-gradient(112deg, #e9ff7a 0%, #d8f24a 55%, #a8c72c 100%);
  --grad-dark: linear-gradient(160deg, #161b22 0%, #0d1014 100%);
  --stripe: repeating-linear-gradient(-45deg, #ff5a1f 0 9px, #0b0d10 9px 18px);

  --shadow: 0 26px 70px rgba(0, 0, 0, .55);
  --shadow-hard: 8px 8px 0 rgba(255, 90, 31, .22);
  --shadow-hard-acid: 8px 8px 0 rgba(216, 242, 74, .18);

  --face: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", "Consolas", "Courier New", monospace;
  --shell: 1240px;
  --header-h: 78px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--face);
  background: var(--void);
  color: var(--ice);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--ember); color: #0b0d10; }

/* 页面底纹：工程网格 + 光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(880px 520px at 88% -6%, rgba(255, 90, 31, .13), transparent 62%),
    radial-gradient(720px 460px at -8% 42%, rgba(216, 242, 74, .045), transparent 60%),
    var(--void);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .55;
  background-image:
    linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 88%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 88%);
}

.fb-shell { width: min(var(--shell), calc(100% - 56px)); margin: 0 auto; }

/* ---------- 2. 滚动进度条 ---------- */
.fb-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 90;
  background: var(--grad-ember);
  box-shadow: 0 0 18px rgba(255, 90, 31, .8);
}

/* ---------- 3. 顶部跑马灯 ---------- */
.fb-ticker {
  background: var(--ember);
  color: #0b0d10;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  overflow: hidden;
  border-bottom: 2px solid #0b0d10;
}
.fb-ticker-track {
  display: flex;
  width: max-content;
  animation: fb-marquee 38s linear infinite;
}
.fb-ticker-track span { padding: 8px 0; white-space: nowrap; }
.fb-ticker-track b { font-weight: 700; }
.fb-ticker-track i { font-style: normal; padding: 0 18px; opacity: .55; }
@keyframes fb-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 4. 页头 ---------- */
.fb-head {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 13, 16, .94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-2);
}
.fb-head::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--stripe);
  background-size: 25px 25px;
}
.fb-head .fb-shell {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: calc(var(--header-h) - 3px);
}
.fb-brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.fb-brand img { width: 188px; height: auto; }
.fb-brand-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--dim);
  border-left: 1px solid var(--line-2);
  padding-left: 12px;
  line-height: 1.5;
  text-transform: uppercase;
}
.fb-nav { margin-left: auto; }
.fb-nav ul { display: flex; align-items: center; gap: 4px; }
.fb-nav a {
  display: block;
  padding: 10px 14px;
  font-size: 14.5px;
  color: var(--mist);
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.fb-nav a:hover { color: var(--ice); border-color: var(--ember); }
.fb-nav a.is-on { color: var(--ice); border-color: var(--acid); }
.fb-head-side { display: flex; align-items: center; gap: 12px; }
.fb-online {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--acid);
  white-space: nowrap;
}
.fb-online::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--acid);
  animation: fb-blink 1.6s steps(2, start) infinite;
}
@keyframes fb-blink { 50% { opacity: .15; } }
.fb-burger {
  display: none;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--line-2);
  position: relative;
}
.fb-burger span, .fb-burger span::before, .fb-burger span::after {
  content: "";
  position: absolute;
  left: 11px;
  width: 18px;
  height: 2px;
  background: var(--ice);
  transition: transform .25s, opacity .25s;
}
.fb-burger span { top: 19px; }
.fb-burger span::before { left: 0; top: -6px; }
.fb-burger span::after { left: 0; top: 6px; }

/* ---------- 5. 按钮 ---------- */
.fb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 2px solid transparent;
  border-radius: 0;
  transition: transform .18s, background .2s, color .2s, border-color .2s, box-shadow .2s;
}
.fb-btn::after { content: "→"; font-family: var(--mono); font-size: 14px; transition: transform .2s; }
.fb-btn:hover::after { transform: translateX(4px); }
.fb-btn--ember { background: var(--grad-ember); color: #0b0d10; }
.fb-btn--ember:hover { box-shadow: var(--shadow-hard); transform: translate(-2px, -2px); }
.fb-btn--ghost { border-color: var(--line-2); color: var(--ice); background: transparent; }
.fb-btn--ghost:hover { border-color: var(--ember); color: var(--ember-2); }
.fb-btn--acid { background: var(--grad-acid); color: #0b0d10; }
.fb-btn--acid:hover { box-shadow: var(--shadow-hard-acid); transform: translate(-2px, -2px); }
.fb-btn--dark { background: #0b0d10; color: var(--ice); border-color: #0b0d10; }
.fb-btn--dark:hover { background: #1b2028; }
.fb-btn--lg { padding: 16px 34px; font-size: 16px; }
.fb-btn--sm { padding: 9px 18px; font-size: 13.5px; }
.fb-btn--sm::after { display: none; }

/* ---------- 6. Hero ---------- */
.fb-hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.fb-hero-media { position: absolute; inset: 0; }
.fb-hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%; opacity: .5; }
.fb-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11, 13, 16, .97) 0%, rgba(11, 13, 16, .88) 42%, rgba(11, 13, 16, .36) 100%),
    linear-gradient(0deg, var(--void) 2%, transparent 46%);
}
.fb-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  gap: 46px;
  align-items: center;
  padding: 72px 0 76px;
}
.fb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ember-2);
}
.fb-eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--ember); }
.fb-hero-title {
  margin: 20px 0 22px;
  font-size: clamp(36px, 4.2vw, 56px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -.02em;
}
.fb-hero-title em {
  font-style: normal;
  display: inline-block;
  padding: 0 10px;
  background: var(--ember);
  color: #0b0d10;
  transform: skew(-6deg);
  margin: 0 2px;
}
.fb-hero-title u {
  text-decoration: none;
  color: var(--acid);
  border-bottom: 5px solid rgba(216, 242, 74, .28);
}
.fb-hero-lead { max-width: 560px; color: var(--mist); font-size: 16.5px; }
.fb-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.fb-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.fb-hero-meta span {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--dim);
  text-transform: uppercase;
}
.fb-hero-meta b { color: var(--ice); font-weight: 600; }

/* 仪表盘面板 */
.fb-gauge-panel {
  position: relative;
  border: 1px solid var(--line-2);
  background: rgba(14, 17, 21, .82);
  backdrop-filter: blur(6px);
  padding: 26px;
}
.fb-gauge-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 76px;
  height: 6px;
  background: var(--acid);
}
.fb-gauge-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--dim);
  text-transform: uppercase;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.fb-gauge-top b { color: var(--acid); font-weight: 600; }
.fb-gauge-ring {
  width: min(268px, 74%);
  aspect-ratio: 1;
  margin: 26px auto;
  border-radius: 50%;
  background: conic-gradient(from -90deg, var(--ember) 0 58%, var(--acid) 58% 96.4%, rgba(255, 255, 255, .09) 96.4% 100%);
  display: grid;
  place-items: center;
  position: relative;
}
.fb-gauge-ring::before {
  content: "";
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, .16);
  animation: fb-spin 26s linear infinite;
}
@keyframes fb-spin { to { transform: rotate(360deg); } }
.fb-gauge-core {
  width: 76%;
  height: 76%;
  border-radius: 50%;
  background: #0d1014;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, .1);
}
.fb-gauge-core b {
  font-size: 52px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -.04em;
  font-family: var(--mono);
  color: var(--ice);
}
.fb-gauge-core b i { font-style: normal; color: var(--ember); }
.fb-gauge-core span {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--dim);
}
.fb-telemetry { border-top: 1px dashed var(--line); padding-top: 16px; }
.fb-telemetry li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 7px 0;
  font-size: 12.5px;
  color: var(--mist);
  font-family: var(--mono);
}
.fb-telemetry li span { color: var(--dim); letter-spacing: .06em; }
.fb-telemetry li b { color: var(--acid); font-weight: 600; }
.fb-telemetry li b.warn { color: var(--ember-2); }

/* ---------- 7. 数据横带 ---------- */
.fb-band {
  background: var(--ember);
  color: #0b0d10;
  position: relative;
  border-top: 2px solid #0b0d10;
  border-bottom: 2px solid #0b0d10;
}
.fb-band::before, .fb-band::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 14px;
  background: var(--stripe);
  background-size: 20px 20px;
}
.fb-band::before { left: 0; }
.fb-band::after { right: 0; }
.fb-band-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(11, 13, 16, .22);
}
.fb-band-item { background: var(--ember); padding: 28px 26px; }
.fb-band-item b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.04em;
}
.fb-band-item span {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  letter-spacing: .08em;
  color: rgba(11, 13, 16, .72);
}

/* ---------- 8. 区块通用 ---------- */
.fb-sec { padding: 86px 0; position: relative; }
.fb-sec--tight { padding: 64px 0; }
.fb-sec--panel {
  background: linear-gradient(180deg, rgba(21, 25, 32, .72), rgba(11, 13, 16, 0) 82%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.fb-sec-head {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) auto;
  gap: 26px;
  align-items: end;
  padding-bottom: 26px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line-2);
}
.fb-sec-index {
  font-family: var(--mono);
  font-size: clamp(46px, 5.2vw, 70px);
  line-height: .82;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 90, 31, .55);
  letter-spacing: -.05em;
}
.fb-sec-eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ember-2);
  margin-bottom: 8px;
}
.fb-sec-title { font-size: clamp(26px, 3vw, 38px); line-height: 1.2; font-weight: 800; letter-spacing: -.01em; }
.fb-sec-lead { max-width: 760px; margin-top: 10px; color: var(--mist); font-size: 15.5px; }
.fb-sec-side { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--dim); text-transform: uppercase; white-space: nowrap; padding-bottom: 4px; }

/* ---------- 9. 游戏卡 ---------- */
.fb-grid-games { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.fb-gcard {
  position: relative;
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: transform .24s, border-color .24s, box-shadow .24s;
}
.fb-gcard:hover { transform: translate(-4px, -4px); border-color: var(--line-ember); box-shadow: var(--shadow-hard); }
.fb-gcard-media { display: block; position: relative; overflow: hidden; aspect-ratio: 3 / 4; }
.fb-gcard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s, filter .5s; filter: saturate(.92) contrast(1.03); }
.fb-gcard:hover .fb-gcard-media img { transform: scale(1.05); filter: saturate(1.08) contrast(1.05); }
.fb-gcard-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11, 13, 16, .92), transparent 46%);
}
.fb-gcard-no {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ice);
  background: rgba(11, 13, 16, .72);
  border: 1px solid var(--line-2);
  padding: 3px 9px;
}
.fb-gcard-body { padding: 20px 22px 24px; margin-top: -56px; position: relative; z-index: 2; }
.fb-gcard-body h3 { font-size: 21px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.fb-gcard-body h3::after { content: "▸"; color: var(--ember); font-size: 14px; }
.fb-gcard-body p { margin-top: 8px; font-size: 13.5px; color: var(--mist); }
.fb-gcard-tag {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--acid);
  border: 1px solid rgba(216, 242, 74, .32);
  padding: 3px 9px;
}

/* ---------- 10. 优势卡 ---------- */
.fb-grid-feat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fb-fcard {
  background: var(--void-2);
  padding: 32px 30px 34px;
  position: relative;
  transition: background .2s;
}
.fb-fcard:hover { background: var(--panel); }
.fb-fcard-no {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--dim);
  display: block;
  margin-bottom: 22px;
}
.fb-fcard-no b { color: var(--ember); font-weight: 700; }
.fb-fcard h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.fb-fcard p { font-size: 14px; color: var(--mist); }
.fb-fcard::after {
  content: "";
  position: absolute;
  left: 30px;
  bottom: 0;
  width: 0;
  height: 3px;
  background: var(--ember);
  transition: width .3s;
}
.fb-fcard:hover::after { width: calc(100% - 60px); }

/* ---------- 11. 开户流程 ---------- */
.fb-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: fbstep; }
.fb-step {
  position: relative;
  border: 1px solid var(--line-2);
  background: var(--panel);
  padding: 26px 24px 30px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.fb-step::before {
  counter-increment: fbstep;
  content: "0" counter(fbstep);
  display: block;
  font-family: var(--mono);
  font-size: 40px;
  line-height: 1;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1.2px rgba(216, 242, 74, .6);
  margin-bottom: 18px;
}
.fb-step h3 { font-size: 18px; margin-bottom: 8px; }
.fb-step p { font-size: 13.8px; color: var(--mist); }
.fb-step:nth-child(2)::before,
.fb-step:nth-child(3)::before { -webkit-text-stroke-color: rgba(255, 90, 31, .6); }

/* ---------- 12. 分栏面板 ---------- */
.fb-split { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); gap: 46px; align-items: center; }
.fb-split-media { position: relative; border: 1px solid var(--line-2); }
.fb-split-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.fb-split-media::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 84px;
  height: 6px;
  background: var(--stripe);
  background-size: 20px 20px;
}
.fb-split-media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ice);
  background: rgba(11, 13, 16, .78);
  border-top: 1px solid var(--line);
}
.fb-split-body h2 { font-size: clamp(25px, 2.8vw, 34px); line-height: 1.24; margin: 14px 0 16px; }
.fb-split-body p { color: var(--mist); font-size: 15px; margin-bottom: 14px; }
.fb-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); margin-top: 24px; border: 1px solid var(--line); }
.fb-metric { background: var(--void-2); padding: 18px 20px; }
.fb-metric b { display: block; font-family: var(--mono); font-size: 26px; font-weight: 800; color: var(--acid); line-height: 1.1; }
.fb-metric span { display: block; margin-top: 4px; font-size: 12.5px; color: var(--dim); }

/* ---------- 13. 资讯卡 ---------- */
.fb-grid-news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.fb-ncard {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform .24s, border-color .24s, box-shadow .24s;
}
.fb-ncard:hover { transform: translateY(-5px); border-color: var(--line-ember); box-shadow: 0 22px 50px rgba(0, 0, 0, .45); }
.fb-ncard-media { display: block; aspect-ratio: 16 / 10; overflow: hidden; }
.fb-ncard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.fb-ncard:hover .fb-ncard-media img { transform: scale(1.04); }
.fb-ncard-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.fb-ncard-body time {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ember-2);
}
.fb-ncard-body h3 { font-size: 18.5px; line-height: 1.45; margin: 10px 0 8px; }
.fb-ncard-body p { font-size: 13.5px; color: var(--mist); flex: 1; }
.fb-more {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--acid);
}

/* ---------- 14. FAQ ---------- */
.fb-faq { border-top: 1px solid var(--line-2); }
.fb-faq details { border-bottom: 1px solid var(--line); }
.fb-faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 6px;
  font-size: 17px;
  font-weight: 600;
  transition: color .2s;
}
.fb-faq summary::-webkit-details-marker { display: none; }
.fb-faq summary::before {
  content: "+";
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 400;
  color: var(--ember);
  border: 1px solid var(--line-ember);
  transition: transform .22s, background .22s, color .22s;
}
.fb-faq details[open] summary::before { content: "−"; background: var(--ember); color: #0b0d10; transform: rotate(180deg); }
.fb-faq summary:hover { color: var(--ember-2); }
.fb-faq details[open] summary { color: var(--ice); }
.fb-faq-body { padding: 0 6px 24px 50px; color: var(--mist); font-size: 14.8px; max-width: 980px; }
.fb-faq-body a { color: var(--acid); border-bottom: 1px solid rgba(216, 242, 74, .4); }

/* ---------- 15. CTA ---------- */
.fb-cta { padding: 0 0 86px; }
.fb-cta-card {
  position: relative;
  overflow: hidden;
  background: var(--grad-ember);
  color: #0b0d10;
  padding: 62px 56px;
  border: 2px solid #0b0d10;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}
.fb-cta-card::before {
  content: "STORM";
  position: absolute;
  right: -12px;
  bottom: -54px;
  font-family: var(--mono);
  font-size: 190px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.06em;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(11, 13, 16, .22);
  pointer-events: none;
}
.fb-cta-card .fb-eyebrow { color: rgba(11, 13, 16, .7); }
.fb-cta-card .fb-eyebrow::before { background: #0b0d10; }
.fb-cta-card h2 { font-size: clamp(28px, 3.6vw, 44px); line-height: 1.16; margin: 14px 0 12px; position: relative; }
.fb-cta-card p { max-width: 620px; color: rgba(11, 13, 16, .78); position: relative; }
.fb-cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; position: relative; }

/* ---------- 16. 关键词横条 ---------- */
.fb-keybar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--void-2); }
.fb-keybar .fb-shell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  padding: 16px 0;
}
.fb-keybar span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--dim);
}
.fb-keybar a { font-size: 13.5px; color: var(--mist); border-bottom: 1px solid transparent; }
.fb-keybar a:hover { color: var(--acid); border-color: var(--acid); }

/* ---------- 17. 页脚 ---------- */
.fb-foot { background: #080a0c; border-top: 1px solid var(--line-2); padding-top: 58px; padding-bottom: 16px; overflow: hidden; }
.fb-foot-grid { display: grid; grid-template-columns: 1.45fr 1fr 1fr 1.2fr; gap: 40px; }
.fb-foot-brand img { width: 196px; margin-bottom: 16px; }
.fb-foot-brand p { font-size: 13.5px; color: var(--dim); max-width: 320px; }
.fb-foot-badge {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--acid);
  border: 1px solid rgba(216, 242, 74, .3);
  padding: 4px 10px;
}
.fb-foot h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ember-2);
  margin-bottom: 16px;
}
.fb-foot-links { display: flex; flex-direction: column; gap: 9px; }
.fb-foot-links a { font-size: 13.5px; color: var(--mist); width: fit-content; border-bottom: 1px solid transparent; }
.fb-foot-links a:hover { color: var(--ice); border-color: var(--ember); }
.fb-foot-contact { display: flex; flex-direction: column; gap: 10px; font-size: 13.5px; color: var(--mist); }
.fb-foot-contact b { color: var(--dim); font-weight: 400; }
.fb-foot-contact a:hover { color: var(--acid); }
.fb-foot-keywords {
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--dim);
}
.fb-foot-keywords b { color: var(--mist); font-weight: 500; }
.fb-wordmark {
  font-family: var(--mono);
  font-size: clamp(80px, 16vw, 240px);
  font-weight: 900;
  line-height: .8;
  letter-spacing: -.05em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, .12);
  margin-top: 34px;
  user-select: none;
  white-space: nowrap;
}
.fb-foot-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 26px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--dim);
}
.fb-foot-bottom a:hover { color: var(--acid); }

/* ---------- 18. 回到顶部 ---------- */
.fb-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 70;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--panel-2);
  border: 1px solid var(--line-2);
  color: var(--ice);
  font-size: 17px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s, transform .25s, visibility .25s, background .2s;
}
.fb-top.is-show { opacity: 1; visibility: visible; transform: none; }
.fb-top:hover { background: var(--ember); color: #0b0d10; }

/* ---------- 19. 子页 Hero ---------- */
.fb-phero {
  position: relative;
  padding: 54px 0 46px;
  border-bottom: 1px solid var(--line-2);
  background:
    repeating-linear-gradient(-45deg, rgba(255, 90, 31, .05) 0 1px, transparent 1px 14px),
    linear-gradient(180deg, rgba(255, 90, 31, .06), transparent 78%);
  overflow: hidden;
}
.fb-phero::after {
  content: attr(data-code);
  position: absolute;
  right: 2vw;
  bottom: -34px;
  font-family: var(--mono);
  font-size: 180px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, .07);
  pointer-events: none;
}
.fb-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--dim);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.fb-crumbs a { color: var(--mist); }
.fb-crumbs a:hover { color: var(--acid); }
.fb-crumbs i { font-style: normal; color: var(--ember); }
.fb-phero h1 { font-size: clamp(30px, 3.8vw, 48px); line-height: 1.18; font-weight: 900; letter-spacing: -.015em; max-width: 880px; }
.fb-phero h1 em { font-style: normal; color: var(--ember); }
.fb-phero-lead { max-width: 760px; margin-top: 14px; color: var(--mist); font-size: 15.5px; }
.fb-phero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.fb-phero-tags span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--acid);
  border: 1px solid rgba(216, 242, 74, .28);
  padding: 4px 10px;
}

/* ---------- 20. 内容排版 ---------- */
.fb-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 44px; align-items: start; }
.fb-article h2 {
  font-size: 26px;
  line-height: 1.3;
  margin: 44px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--ember);
}
.fb-article h2:first-child { margin-top: 0; }
.fb-article h3 { font-size: 19px; margin: 28px 0 10px; }
.fb-article p { margin-bottom: 15px; color: #c9ced6; font-size: 15.3px; }
.fb-article ul, .fb-article ol { margin: 0 0 18px; display: flex; flex-direction: column; gap: 9px; }
.fb-article li { position: relative; padding-left: 22px; color: #c9ced6; font-size: 15px; }
.fb-article li::before { content: "▸"; position: absolute; left: 0; top: 0; color: var(--ember); font-size: 12px; }
.fb-article strong { color: var(--ice); }
.fb-article a { color: var(--acid); border-bottom: 1px solid rgba(216, 242, 74, .35); }
.fb-article a:hover { border-color: var(--acid); }
.fb-note {
  border: 1px solid var(--line-ember);
  background: var(--ember-mist);
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 14.3px;
  color: var(--mist);
}
.fb-note b { color: var(--ember-2); }
.fb-table-wrap { overflow-x: auto; margin: 20px 0 26px; border: 1px solid var(--line-2); }
.fb-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
.fb-table th, .fb-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.fb-table th { background: var(--panel-2); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--acid); font-weight: 600; }
.fb-table td { color: var(--mist); }
.fb-table tr:last-child td { border-bottom: 0; }

.fb-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: calc(var(--header-h) + 20px); }
.fb-panel { border: 1px solid var(--line); background: var(--panel); padding: 24px; position: relative; }
.fb-panel::before { content: ""; position: absolute; top: -1px; left: -1px; width: 58px; height: 3px; background: var(--ember); }
.fb-panel h3 { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--ember-2); margin-bottom: 16px; }
.fb-panel-links { display: flex; flex-direction: column; gap: 11px; }
.fb-panel-links a { font-size: 14px; color: var(--mist); display: flex; justify-content: space-between; gap: 10px; }
.fb-panel-links a::after { content: "→"; color: var(--dim); }
.fb-panel-links a:hover { color: var(--ice); }
.fb-panel-links a:hover::after { color: var(--ember); }
.fb-panel p { font-size: 13.5px; color: var(--mist); }
.fb-panel .fb-btn { margin-top: 16px; width: 100%; }

/* ---------- 21. 表单 ---------- */
.fb-form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.fb-field { display: flex; flex-direction: column; gap: 7px; }
.fb-field--full { grid-column: 1 / -1; }
.fb-field label { font-size: 13px; color: var(--mist); letter-spacing: .02em; }
.fb-field label i { color: var(--ember); font-style: normal; }
.fb-field input, .fb-field select, .fb-field textarea {
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ice);
  background: #0d1014;
  border: 1px solid var(--line-2);
  border-radius: 0;
  padding: 12px 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  width: 100%;
}
.fb-field textarea { min-height: 120px; resize: vertical; }
.fb-field input:focus, .fb-field select:focus, .fb-field textarea:focus { border-color: var(--ember); box-shadow: 0 0 0 3px rgba(255, 90, 31, .12); }
.fb-field input::placeholder, .fb-field textarea::placeholder { color: #5d646e; }
.fb-check { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--mist); }
.fb-check input { width: 16px; height: 16px; margin-top: 3px; accent-color: var(--ember); }
.fb-form-tip { display: none; margin-top: 18px; border: 1px solid rgba(216, 242, 74, .4); background: rgba(216, 242, 74, .07); color: var(--acid); padding: 13px 16px; font-size: 14px; }

/* ---------- 22. 时间线 ---------- */
.fb-timeline { border-left: 1px solid var(--line-2); margin: 26px 0 10px; padding-left: 26px; display: flex; flex-direction: column; gap: 26px; }
.fb-timeline-item { position: relative; }
.fb-timeline-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--void);
  border: 2px solid var(--ember);
}
.fb-timeline-item b { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--acid); display: block; margin-bottom: 4px; }
.fb-timeline-item h3 { font-size: 17px; margin: 0 0 4px; }
.fb-timeline-item p { font-size: 14px; color: var(--mist); margin: 0; }

/* ---------- 23. 提示条 ---------- */
.fb-alert {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--acid);
  background: var(--panel);
  padding: 16px 20px;
  font-size: 13.8px;
  color: var(--mist);
  margin: 24px 0;
}
.fb-alert b { color: var(--acid); }

/* ---------- 24. 动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .fb-ticker-track, .fb-gauge-ring::before, .fb-online::before { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 25. 响应式 ---------- */
@media (max-width: 1120px) {
  .fb-nav a { padding: 10px 10px; font-size: 13.5px; }
  .fb-brand-tag { display: none; }
  .fb-hero-inner { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 30px; }
  .fb-gauge-ring { width: min(228px, 80%); }
  .fb-gauge-core b { font-size: 42px; }
  .fb-layout { grid-template-columns: minmax(0, 1fr) 290px; gap: 30px; }
  .fb-foot-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .fb-foot-grid > div:last-child { grid-column: 2 / -1; }
}

@media (max-width: 960px) {
  .fb-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #0b0d10;
    border-bottom: 1px solid var(--line-2);
    padding: 10px 28px 24px;
    display: none;
    box-shadow: 0 24px 40px rgba(0, 0, 0, .45);
  }
  .fb-nav.is-open { display: block; }
  .fb-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .fb-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .fb-nav a.is-on { border-color: var(--acid); }
  .fb-burger { display: block; }
  .fb-head-side .fb-btn { display: none; }
  .fb-online { display: none; }
  .fb-hero-inner { grid-template-columns: 1fr; padding: 52px 0 60px; }
  .fb-hero-media img { object-position: 70% 50%; }
  .fb-gauge-panel { max-width: 460px; }
  .fb-band-grid { grid-template-columns: repeat(2, 1fr); }
  .fb-grid-games, .fb-grid-news { grid-template-columns: repeat(2, 1fr); }
  .fb-grid-feat { grid-template-columns: repeat(2, 1fr); }
  .fb-flow { grid-template-columns: repeat(2, 1fr); }
  .fb-split { grid-template-columns: 1fr; gap: 30px; }
  .fb-layout { grid-template-columns: 1fr; }
  .fb-side { position: static; flex-direction: row; flex-wrap: wrap; }
  .fb-side .fb-panel { flex: 1 1 260px; }
  .fb-sec-head { grid-template-columns: 86px minmax(0, 1fr); }
  .fb-sec-side { display: none; }
  .fb-cta-card { padding: 44px 34px; }
}

@media (max-width: 720px) {
  .fb-shell { width: calc(100% - 36px); }
  .fb-hero-title { font-size: clamp(32px, 8vw, 44px); }
  .fb-hero-lead { font-size: 15px; }
  .fb-sec { padding: 60px 0; }
  .fb-sec-head { grid-template-columns: 1fr; gap: 12px; margin-bottom: 30px; }
  .fb-sec-index { font-size: 44px; }
  .fb-grid-games { grid-template-columns: 1fr; gap: 18px; }
  .fb-gcard-media { aspect-ratio: 4 / 3; }
  .fb-grid-news { grid-template-columns: 1fr; }
  .fb-grid-feat { grid-template-columns: 1fr; }
  .fb-flow { grid-template-columns: 1fr; }
  .fb-foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .fb-foot-grid > div:last-child { grid-column: 1 / -1; }
  .fb-faq-body { padding-left: 6px; }
  .fb-form-grid { grid-template-columns: 1fr; }
  .fb-band-item { padding: 22px 18px; }
  .fb-cta-card { padding: 36px 24px; }
  .fb-cta-card::before { font-size: 120px; }
  .fb-phero::after { font-size: 110px; bottom: -20px; }
  .fb-article h2 { font-size: 22px; }
  .fb-wordmark { -webkit-text-stroke-width: .6px; }
  .fb-top { right: 16px; bottom: 16px; }
}

@media (max-width: 480px) {
  .fb-brand img { width: 158px; }
  .fb-band-grid { grid-template-columns: 1fr; }
  .fb-hero-meta { gap: 8px 16px; }
  .fb-hero-meta span { font-size: 10.5px; }
  .fb-foot-grid { grid-template-columns: 1fr; }
  .fb-foot-grid > div:last-child { grid-column: auto; }
  .fb-gauge-panel { padding: 20px; }
  .fb-gauge-core b { font-size: 36px; }
  .fb-faq summary { font-size: 15.5px; gap: 12px; }
}