/* ============================================================
   Revios-Next 介绍站 — 深空黑 · 青紫霓虹 · 3D 镂空立方体
   ============================================================ */

:root {
  /* 图标（内联 data-URI，零外部依赖） */
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G9YoYqoBO0TJKUtitwN2lAsjIQwuBZyBymuXksqwYYqxmR3Qqu18MTiGwhJGAhXigDqWqTe3K0yWPoNsiGzdsrkXflRLXIyREJWYeq2JUem0egbLoOV+IOhi22BVjuR+/+0IA+zz1L3QtJ/Ps/wAHDc7ABW30Ns1w/AzbEjyhqbN5DY5pKi47iFn2l0vKZYYrAQuKfWBKiVw7xFFUsqG2PXWx9iHts/Qt7iMY1jAmh9Arhq9dk4yMAGPveVI863bHtWDrdiDj+yB9uCapACEEHnC7QyWCbQWk53AJ7Wxt6uieb2a6YoK5hngE35qqI6ZxW3OexPRKfYwR2JBswgJQhaJlDWhyoprdmcuY0NGMHgUcUMrNKSOpSk+RgiIaRrIje+3vdhkGA5UynkHsL2KWLpkPE+rbUbMViQwUFS3NNGAlCRYJHcLcZPu3cPfkV0/oTBEv2qN57hDE3XkCQayIbkjFGOPOw/TE3N5bMtVMS6WnIDF2MghJIQlxQGWG/wos2TYJiXBsl6mzfPfbC3GWPNwfv+C/p+SQYK25bmAcKeERipaB9wPgRL1zJwKuhsAbXDgCk6J1E7xd/dn8O5KHxcVJjftoLhh38TYoY3HGRRVdT/Wcfjb/BdVMhV1Ui9pCqgdQUheY1GAxmqkhgSIIObUhQNdpL1CXowSOYlCVRIwJZ046N+RFvqnLR+koeBQYy9NjLap3vYWUjMqcKSlM+uvseA5S+hpFftQMFdGHfxqcHf/uFoVYt7usSqPRxIhngpfU5ke1Pg2ImzuN7+55JLoayQakllvaQK6hqqCl1SjAlOSUzw6gGpr5MSoCWl3kAZNNvqthZj0oBbHvcdDJDPW7JvKUsK/Q7dQxOwmM+wCvOQ3BR2dknrUgsSsPVB/Fuac7Pa58/1BqIUp2lwzG5dgyXmsrZn9tw3ARb/HeEpx3ydVRNzw8HVtXlV46qQ4FmiEpTkwcaaAIYBJFC1rdk1JRoTtEBK4ENv/AHaWuV09TwGLvUO2jWt6Z0GrAIqyVuy0vxYESFuGYPa5YfiUpC58Ar6EQ9Wj27ftBYG9y5Lz9hkD+cCICaVy9kDmvGIQmun43pHnMYft12Hqi7yYozNX/fUiFhva6pIiEjMv2srIZiiPbS6YE6oueF+f+TmB/8MgoPKthbBWx8FJgfQqgGxsTZ+aJyFEMs2cdcogtg1yXvVAvAcAFcT2amLfLT88ydFi1qjsHvr6qHpuvxJy2lzVWTd+XO87rAvMDM6T6NsmyJLTllBFZCyJCUPO9/QujLlc822r6WONHfDdX/iPod9ztK0WGApKyxpqjDaA13+zUdLm7M+n2vUF01ZnwVlfYIqJHnIdf/W8XeC6sCyFFpdR6s9AJYnCL2MpGm+LkmAid4Ct5o6kw1+PVt7k2C192tEURDN38JBldSLCclJw9URUl8H7rrvL7jnAd9qJqv0oAIjlQmBOOSXXbCe6LAxxFhQb55ExOEQRCVJ/die2wOzAHLxqldCriNDf/Z0cTUUNesP2oTzNSL5p+dI9uVzkPvh84rnr9V1+OTsrVmsuiwr++2hvb0g2M976HD5gfRDWd3by9PWfYeXYFsCBOFAHzr4nxmgNLfKPDNO8A+vF5M1xmLegf+FqKDu4AqQQxAuu7p0FHAFWctHEi6FZpysLR0ap6U7WrFq81inmQRNREHickg2HuKYy/BxHbr8vrwB3+tfl23lBMNLwCVogv1QTLje+HncZ/K3HNDdAABBMGAexuolBSgieJpgPFhPE5Z3tiYQtEW5YQ0JlvMO8Rg42d34bUjZMGVJI9cdXZz9BVITpGJq9YDJdMchgsG7bFBuOCwTDeiqnp2DVZzBflzASrbqBHviGJ5IV0pGXMnhfhNHFBey3m+h5QegArUd9jiFkXJJgZwqgYJm30zWcqjtyOLZ++AokBaIdyRw6MJGYF+AnLTxFzOk/quy+D9RatTXrF6/SHdkFkQbqbu0pOW14bCa89lj3UJDCxQTiti69T5Aq0baNYgCgGDlFbyQRU5WE2Cetzn6W2eI82O4QkjApADnhXp06+2B30Au2bHibQyp/RbKjRfgKkngxNes2WeRVmcBEbXUGcChSbP+CsFq9kAeA1jfhJTHeU4znBaNbdlMHBlcIVSDLoOLV+ILZ9vRGTjX3nUicJ3L+3cEs0o8Gq2PE4SoysKiZ3QMnARAAMwVJN+Jhvx+ax7beu7J3hTmw9azGD4OgrkDBKLL61EAu8bKEVXonb0Ohwd1ODEXrUJrdPZGwNzlhQbwTac8MwUUICosLBR0RzzO1xkSYliSD4M3HFYGPxQgQB7n/lKBZQXJwLLndWxORVk4cx+IHhHBJ1h2Db6z7TX58L/80Bjx3Z9LrJ4iIIigqswtOrqdFt5XjU9cDd0QeDbOZT15/jIAXo6eISmM2QHM85wKzJ25L9QtvBaIOhMeac2eCjz0yv5B2X9xY28W9Th1SyqQ4Nm8xTM/N42qQ6M3V09SjKlvfHt8+Q9msjcVh42br5uvyfNZAvma/EORgTmlzWklzJ68D9orEFvDHoodjsFCe3Dhza/qH/7/uk37pkJ9mJDTstAL1NUY3ZEKEWhuV0E1p0eGJ2cT4MzxtkPt83eU4+0LyfLaFqsXus9ZDXeB0SVi6BAcuRNfedTPg/KsKDeBLHTqPVMKKvKGEQRVYWGjTbqftWudPBIZ+mSXmpssEKFfuPGMYOEje3zPK7vPX4GKC5XHqEXXmqBYTO54I/ATg6oDG0fMHfXy2s/g4IU46DABAjMrsokIYo90JiOgQYBliBkgD6HBQlwMYl31n1eDZvWEli9tmKGKBsCQtQC1hAiozO14MfBjgaoMGhIN7+35ort17rBAmIR+JAvTLmrn5AudGaBUBRFAATS4NHwZweNqGg7j81zj6u8bZvmE1cTCKCx5wuOgN2JIALaZ2vAR45zX1PzMJBw7Wf3i+M3ioaL1CsBeHZS8C6aybX2zhpEurFRCGgxoO0A2/+y67luGwyLAG86PsuGAlC3vGkVjgNMlDXSDRk1R4op/Z8zTgA1yBko0TL+NK1neCLt4XqVFRVAIh9USCBJQABcyMtBmfKPGtAYKCaNNpzgHNPjnWI1gvw/9iVdWxODfK7l0jxKqFqMPjcSqIegRBsLEfqQdu1a47ASdcm//bnK8F18GhtxYQVMjJyw+TvTKway4y6HXR2MWJx/kICoobmjzF5V6tB3PU3BIJGgr6i+Ps2TnBji0T9Oa7SN3GqbdHpOwkkRLWHVzYKnYfD5zClSjZtOJVXMU6NpT9X8NgjUqEJQUCqU+K5DlQApHCO0Y7Bd2WkG4erVaNLwY5VQJC7jGkRHXUVZu69gwGjl7PMSgFZ9sah8OnHntQJ9c0kRwyeqHZG5z4BPIWrUHLh1Cu4mupTPi4+NmjtkAiiRAycJk9jQp4HILm9pPXCFxQIhSsDFaI1FFRdTgBg5Lc41VABElrGDzR7GBQi055cWekvi/wD65iyebx13I11prI4KtK77aRIIgBQSIRcwOUYUES2LXkMfmuCoChggwlHwVq19q8y9couIKeH+2/HHgvV1PJximDdjXXDWMYfEK0fx2VKAYrCRC1XgAiYLCsci9D/2sghAzK+jQviAioAfOtOOfd9YdWbnv/K4DI1ViydeztXIO1rnK7P6KxvKtI3TUkEYQGRAGUoZXXGpCA5Dafzy0RdV420KreDnyEa6hk4+SruZbqLjFWLxPqG6vWI4I2tqSiCM1SQ9HcqtZhEF1SxMlmWvLtOnRfA+zkGi6Zt6Rd27Vup9/zRBfD3Rx6SIxxWiR0hIxREOtU94KLItHh55Ris4g7EfFfBr7L/8+1feTd+26ceNWttky99o6bJl712IsmXvGY1F808dojlOeN8H9I/S+PBY+UnmZiQgAAAABJRU5ErkJggg==);

  /* 深空底色 */
  --bg: #06060a;
  --bg-alt: #0a0a12;
  --card: #10101b;
  --card-2: #161624;
  --border: #232338;
  --border-strong: #363653;

  /* 文本 */
  --text: #f2f4ff;
  --text-body: #c4c9e4;
  --text-dim: #8d93b3;
  --text-mute: #62688a;

  /* 青紫霓虹 */
  --cyan: #22d3ee;
  --cyan-soft: rgba(34, 211, 238, 0.12);
  --cyan-border: rgba(34, 211, 238, 0.32);
  --violet: #8b5cf6;
  --violet-soft: rgba(139, 92, 246, 0.14);
  --grad: linear-gradient(120deg, #22d3ee 0%, #818cf8 55%, #c084fc 100%);

  /* 功能色 */
  --green: #34d399;
  --green-bg: rgba(52, 211, 153, 0.1);
  --green-border: rgba(52, 211, 153, 0.3);
  --red: #fb7185;
  --red-bg: rgba(251, 113, 133, 0.1);
  --red-border: rgba(251, 113, 133, 0.3);
  --amber: #fbbf24;
  --amber-bg: rgba(251, 191, 36, 0.1);
  --amber-border: rgba(251, 191, 36, 0.3);

  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow: 0 10px 34px -12px rgba(0, 0, 0, 0.65);
  --glow-cyan: 0 0 28px rgba(34, 211, 238, 0.25);
  --maxw: 1160px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "SF Mono", Consolas, "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-size: 15.5px;
}
::selection { background: rgba(34, 211, 238, 0.28); color: #fff; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ============ 滚动进度条 ============ */
.scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 3px; width: 0%;
  background: var(--grad);
  z-index: 1000;
  box-shadow: 0 0 10px rgba(34,211,238,.7);
}

/* ============ 导航栏 ============ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  background: rgba(8, 8, 14, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 17px; letter-spacing: .3px; }
.brand-text em {
  font-style: normal; font-size: 11.5px; font-weight: 600;
  color: var(--cyan);
  border: 1px solid var(--cyan-border);
  background: var(--cyan-soft);
  padding: 2px 9px; border-radius: 20px; margin-left: 3px;
}

/* ---- logo：旋转的镂空小立方体 ---- */
.brand-logo { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; perspective: 160px; }
.logo-cube { --s: 15px; position: relative; width: var(--s); height: var(--s); transform-style: preserve-3d; animation: logoSpin 7s linear infinite; }
.logo-cube i {
  position: absolute; inset: 0;
  border: 1.4px solid var(--cyan);
  background: rgba(34, 211, 238, 0.06);
  box-shadow: inset 0 0 8px rgba(34, 211, 238, 0.35), 0 0 6px rgba(34, 211, 238, 0.25);
}
.logo-cube i:nth-child(1) { transform: translateZ(calc(var(--s)/2)); }
.logo-cube i:nth-child(2) { transform: rotateY(180deg) translateZ(calc(var(--s)/2)); border-color: var(--violet); }
.logo-cube i:nth-child(3) { transform: rotateY(90deg) translateZ(calc(var(--s)/2)); }
.logo-cube i:nth-child(4) { transform: rotateY(-90deg) translateZ(calc(var(--s)/2)); border-color: var(--violet); }
.logo-cube i:nth-child(5) { transform: rotateX(90deg) translateZ(calc(var(--s)/2)); }
.logo-cube i:nth-child(6) { transform: rotateX(-90deg) translateZ(calc(var(--s)/2)); border-color: var(--violet); }
@keyframes logoSpin {
  from { transform: rotateX(-24deg) rotateY(0deg); }
  to { transform: rotateX(-24deg) rotateY(360deg); }
}

.nav-links { display: flex; gap: 26px; }
.nav-links a {
  color: var(--text-dim); text-decoration: none; font-size: 14.5px; font-weight: 500;
  transition: color .18s; padding: 4px 0; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; bottom: -3px; left: 0; width: 0; height: 2px;
  background: var(--grad); border-radius: 2px; transition: width .22s;
}
.nav-links a:hover, .nav-links a.active { color: var(--cyan); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 150px 0 90px;
  background:
    radial-gradient(820px 460px at 78% -8%, rgba(139, 92, 246, 0.16) 0%, transparent 68%),
    radial-gradient(680px 420px at 12% 8%, rgba(34, 211, 238, 0.13) 0%, transparent 66%),
    var(--bg);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(130, 140, 200, 0.13) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 38%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 38%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.hero-copy { min-width: 0; }

.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.badge {
  font-size: 12.5px; font-weight: 600; padding: 6px 15px; border-radius: 30px;
  border: 1px solid var(--border-strong); background: rgba(255,255,255,.03); color: var(--text-dim);
}
.badge-version { color: var(--cyan); border-color: var(--cyan-border); background: var(--cyan-soft); }
.badge-offline { color: var(--green); border-color: var(--green-border); background: var(--green-bg); }
.badge-lang { color: #c4b5fd; border-color: rgba(139,92,246,.35); background: var(--violet-soft); }

.hero-title {
  font-size: clamp(40px, 5.6vw, 68px);
  font-weight: 800; line-height: 1.08; letter-spacing: -1px;
  color: var(--text); margin-bottom: 22px;
}
.gradient-text {
  display: inline-block;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  font-size: clamp(20px, 2.4vw, 29px);
  font-weight: 700; letter-spacing: .5px;
  filter: drop-shadow(0 0 22px rgba(34, 211, 238, 0.3));
}
.hero-sub { font-size: clamp(15px, 1.4vw, 17.5px); color: var(--text-dim); max-width: 560px; margin-bottom: 34px; }
.hero-sub strong { color: var(--text); font-weight: 700; }
.hide-mobile { display: inline; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 11px; font-size: 15px; font-weight: 600;
  text-decoration: none; transition: all .22s ease; cursor: pointer;
  border: 1px solid transparent; font-family: var(--font);
}
.btn-primary {
  background: var(--grad); color: #0a0a12; font-weight: 700;
  box-shadow: 0 10px 30px -8px rgba(34, 211, 238, 0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(34, 211, 238, 0.65); }
.btn-ghost { background: rgba(255,255,255,.04); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: var(--glow-cyan); }

/* ---- hero 右侧：立体镂空立方体 ---- */
.hero-visual { display: flex; align-items: center; justify-content: center; perspective: 1100px; }
.cube-stage { position: relative; width: 340px; height: 340px; display: flex; align-items: center; justify-content: center; animation: floatY 6.5s ease-in-out infinite; }
.cube-glow {
  position: absolute; width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.22), rgba(139,92,246,.1) 45%, transparent 70%);
  filter: blur(18px);
}
.cube { position: relative; width: 210px; height: 210px; transform-style: preserve-3d; animation: cubeSpin 18s linear infinite; }
.cube .face {
  position: absolute; inset: 0;
  border: 1.6px solid rgba(34, 211, 238, 0.6);
  background: linear-gradient(135deg, rgba(34,211,238,.07), rgba(139,92,246,.04));
  box-shadow: inset 0 0 30px rgba(34, 211, 238, 0.12), 0 0 18px rgba(34, 211, 238, 0.12);
}
.cube .face-v { border-color: rgba(139, 92, 246, 0.6); box-shadow: inset 0 0 30px rgba(139,92,246,.12), 0 0 18px rgba(139,92,246,.12); }
.cube .f-front  { transform: translateZ(105px); }
.cube .f-back   { transform: rotateY(180deg) translateZ(105px); }
.cube .f-right  { transform: rotateY(90deg) translateZ(105px); }
.cube .f-left   { transform: rotateY(-90deg) translateZ(105px); }
.cube .f-top    { transform: rotateX(90deg) translateZ(105px); }
.cube .f-bottom { transform: rotateX(-90deg) translateZ(105px); }
/* 内核小立方体，增加纵深感 */
.cube-core { position: absolute; inset: 0; margin: auto; width: 84px; height: 84px; transform-style: preserve-3d; animation: cubeSpin 11s linear infinite reverse; }
.cube-core .face { border-width: 1.2px; border-color: rgba(192, 132, 252, .75); box-shadow: inset 0 0 16px rgba(192,132,252,.25), 0 0 12px rgba(192,132,252,.3); }
.cube-core .f-front  { transform: translateZ(42px); }
.cube-core .f-back   { transform: rotateY(180deg) translateZ(42px); }
.cube-core .f-right  { transform: rotateY(90deg) translateZ(42px); }
.cube-core .f-left   { transform: rotateY(-90deg) translateZ(42px); }
.cube-core .f-top    { transform: rotateX(90deg) translateZ(42px); }
.cube-core .f-bottom { transform: rotateX(-90deg) translateZ(42px); }
@keyframes cubeSpin {
  from { transform: rotateX(-22deg) rotateY(0deg); }
  to   { transform: rotateX(-22deg) rotateY(360deg); }
}
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }

/* hero 入场动画 */
.hero-copy .anim { opacity: 0; animation: rise .8s cubic-bezier(.16,1,.3,1) forwards; }
.hero-copy .d1 { animation-delay: .08s; }
.hero-copy .d2 { animation-delay: .2s; }
.hero-copy .d3 { animation-delay: .34s; }
.hero-copy .d4 { animation-delay: .48s; }
.hero-visual .anim { opacity: 0; animation: fadeIn 1.1s ease .35s forwards; }
@keyframes rise { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* 数据概览 */
.stats-grid { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 64px; }
.stat-card {
  background: linear-gradient(160deg, rgba(255,255,255,.045), rgba(255,255,255,.015));
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 18px;
  transition: all .28s; position: relative; overflow: hidden;
}
.stat-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad); opacity: 0; transition: opacity .28s;
}
.stat-card:hover { border-color: var(--cyan-border); transform: translateY(-3px); box-shadow: var(--shadow), var(--glow-cyan); }
.stat-card:hover::after { opacity: 1; }
.stat-num { font-size: clamp(28px, 3.2vw, 40px); font-weight: 800; line-height: 1.1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-unit { font-size: .55em; margin-left: 2px; }
.stat-label { font-size: 13.5px; color: var(--text-dim); margin-top: 7px; }
.stat-note { font-size: 12px; color: var(--text-mute); margin-top: 4px; letter-spacing: .2px; }
.stat-note b { color: var(--cyan); font-weight: 600; }

/* ============ 通用章节 ============ */
.section { padding: 92px 0; position: relative; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-index {
  display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--cyan);
  letter-spacing: 2.5px; background: var(--cyan-soft); border: 1px solid var(--cyan-border);
  padding: 4px 13px; border-radius: 7px; margin-bottom: 17px;
}
.section-head h2 { font-size: clamp(27px, 3.2vw, 38px); font-weight: 800; letter-spacing: -.3px; color: var(--text); margin-bottom: 12px; }
.section-head p { color: var(--text-dim); font-size: 16px; max-width: 660px; margin: 0 auto; }
.subhead { font-size: 19px; font-weight: 700; color: var(--text); margin: 54px 0 20px; padding-left: 14px; border-left: 4px solid var(--cyan); }

/* ============ 作者信息条 ============ */
.author-bar {
  display: flex; align-items: center; gap: 15px; max-width: 700px; margin: 0 auto 10px;
  background: var(--card); border: 1px solid var(--border); border-radius: 13px;
  padding: 15px 24px; box-shadow: var(--shadow-sm);
}
.author-avatar {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  background: var(--grad); color: #0a0a12;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px;
}
.author-info { text-align: left; }
.author-name { font-weight: 700; color: var(--text); font-size: 15.5px; }
.author-desc { font-size: 13px; color: var(--text-mute); }

/* ============ Bug 修复高亮横幅 ============ */
.bugfix-banner {
  background: linear-gradient(135deg, var(--cyan-soft), rgba(139,92,246,.06) 60%, transparent);
  border: 1px solid var(--cyan-border);
  border-left: 5px solid var(--cyan);
  border-radius: var(--radius); padding: 26px 30px; margin-top: 42px; text-align: left;
  box-shadow: var(--shadow-sm);
}
.bugfix-banner h3 { color: var(--text); font-size: 17.5px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.bugfix-banner ul { list-style: none; margin-top: 6px; }
.bugfix-banner li { position: relative; padding: 7px 0 7px 28px; color: var(--text-body); font-size: 14.6px; }
.bugfix-banner li::before { content: "✓"; position: absolute; left: 0; top: 7px; color: var(--cyan); font-weight: 800; font-size: 13px; text-shadow: 0 0 10px rgba(34,211,238,.7); }
.bugfix-banner li code { background: rgba(34,211,238,.14); color: var(--cyan); }

/* ============ 痛点卡片 ============ */
.pain-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.pain-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 28px; transition: all .28s; }
.pain-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.pain-fix { border-color: var(--green-border); background: linear-gradient(160deg, var(--green-bg), transparent 70%); }
.pain-icon { font-size: 32px; margin-bottom: 14px; }
.pain-card h3 { font-size: 18px; margin-bottom: 14px; color: var(--text); }
.pain-list { list-style: none; }
.pain-list li { color: var(--text-body); padding: 7px 0 7px 26px; position: relative; font-size: 14.5px; }
.pain-list li::before { content: "—"; position: absolute; left: 0; color: var(--red); font-weight: 700; }
.pain-fix .pain-list li::before { content: "✓"; color: var(--green); font-weight: 800; }

/* 兼容条 */
.compat-bar {
  margin-top: 30px; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 21px 24px;
}
.compat-title { font-weight: 600; font-size: 14.5px; color: var(--text-dim); }
.chip { font-size: 13.5px; padding: 5px 15px; background: var(--cyan-soft); border: 1px solid var(--cyan-border); border-radius: 20px; color: var(--cyan); font-weight: 500; }
.chip-arch { background: rgba(255,255,255,.04); border-color: var(--border-strong); color: var(--text-dim); }

/* ============ 特性网格 ============ */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 27px 25px; transition: all .28s; position: relative;
}
.feature-card:hover { transform: translateY(-3px); border-color: var(--cyan-border); box-shadow: var(--shadow); }
.feature-icon {
  width: 50px; height: 50px; display: flex; align-items: center; justify-content: center;
  font-size: 23px; background: var(--cyan-soft); border: 1px solid var(--cyan-border);
  border-radius: 12px; margin-bottom: 17px;
}
.feature-card h3 { font-size: 16.5px; margin-bottom: 9px; color: var(--text); }
.feature-card p { font-size: 14.3px; color: var(--text-dim); }
.feature-card strong { color: var(--cyan); font-weight: 700; }

code {
  font-family: var(--mono); font-size: .87em;
  background: rgba(34,211,238,.12); color: var(--cyan);
  padding: 2px 7px; border-radius: 5px; font-weight: 500;
}

/* ============ 表格 ============ */
.table-wrap { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.data-table thead { background: var(--card-2); }
.data-table th { padding: 14px 20px; text-align: left; font-weight: 700; font-size: 13.5px; color: var(--cyan); border-bottom: 1px solid var(--border-strong); }
.data-table td { padding: 12px 20px; border-top: 1px solid var(--border); color: var(--text-body); }
.data-table tbody tr { transition: background .15s; }
.data-table tbody tr:hover { background: rgba(34,211,238,.05); }
.compare-table td:nth-child(2) { color: var(--text-mute); }
.compare-table td:nth-child(3) { color: var(--green); font-weight: 600; }

.note {
  margin-top: 18px; padding: 15px 19px;
  background: var(--cyan-soft); border: 1px solid var(--cyan-border); border-left: 4px solid var(--cyan);
  border-radius: var(--radius-sm); color: var(--text-body); font-size: 14.3px;
}
.note strong { color: var(--cyan); }
.note-warning { background: var(--amber-bg); border-color: var(--amber-border); border-left-color: var(--amber); }
.note-warning strong { color: var(--amber); }

/* ============ 标签云 ============ */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
.tag {
  font-size: 13.3px; padding: 6px 14px;
  background: rgba(255,255,255,.03); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-dim); transition: all .18s; font-weight: 500;
}
.tag:hover { border-color: var(--cyan-border); color: var(--cyan); background: var(--cyan-soft); transform: translateY(-1px); }
.tag-red { border-color: var(--red-border); color: var(--red); background: var(--red-bg); }
.tag-amber { border-color: var(--amber-border); color: var(--amber); background: var(--amber-bg); }
.tag-cond { border-color: var(--green-border); color: var(--green); background: var(--green-bg); }

.opt-removal { margin-top: 22px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px; }
.opt-removal h4 { margin-bottom: 9px; font-size: 15px; color: var(--text); }
.opt-removal ul { list-style: none; }
.opt-removal li { color: var(--text-dim); padding: 6px 0 6px 22px; position: relative; font-size: 14.3px; }
.opt-removal li::before { content: "▸"; position: absolute; left: 0; color: var(--cyan); }

/* ============ 启用/禁用双栏 ============ */
.feat-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.feat-box { border-radius: var(--radius); padding: 24px 26px; border: 1px solid var(--border); background: var(--card); }
.feat-enable { background: var(--green-bg); border-color: var(--green-border); }
.feat-disable { background: var(--red-bg); border-color: var(--red-border); }
.feat-box h4 { font-size: 15.5px; margin-bottom: 11px; }
.feat-enable h4 { color: var(--green); }
.feat-disable h4 { color: var(--red); }
.feat-box ul { list-style: none; }
.feat-box li { color: var(--text-body); font-size: 14.3px; padding: 4px 0; }

/* ============ 浏览器卡片 ============ */
.browser-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.browser-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all .28s; position: relative;
}
.browser-card:hover { transform: translateY(-4px); border-color: var(--cyan-border); box-shadow: var(--shadow), var(--glow-cyan); }
.card-badge {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  font-size: 11.5px; font-weight: 700; letter-spacing: .5px;
  color: #0a0a12; background: var(--grad);
  padding: 4px 12px; border-radius: 20px;
  box-shadow: 0 4px 14px -3px rgba(34,211,238,.6);
}
.browser-head { display: flex; align-items: center; gap: 15px; padding: 24px 24px 19px; border-bottom: 1px solid var(--border); background: var(--card-2); }
.browser-icon { width: 50px; height: 50px; border-radius: 12px; flex-shrink: 0; background-color: #fff; background-size: contain; background-repeat: no-repeat; background-position: center; padding: 5px; box-shadow: 0 4px 14px -4px rgba(0,0,0,.6); }
.icon-brave { background-image: var(--icon-brave); }
.icon-firefox { background-image: var(--icon-firefox); }
.icon-chrome { background-image: var(--icon-chrome); }
.browser-head h3 { font-size: 18.5px; color: var(--text); line-height: 1.3; }
.browser-ver { font-size: 12.3px; color: var(--text-mute); }
.browser-list { list-style: none; padding: 18px 24px 24px; }
.browser-list li { color: var(--text-dim); font-size: 14.2px; padding: 6px 0 6px 23px; position: relative; }
.browser-list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 700; font-size: 13px; top: 8px; }

/* ============ 权限 ============ */
.perm-grid { display: grid; grid-template-columns: 2.5fr 1fr; gap: 18px; }
.perm-col { border-radius: var(--radius); padding: 22px 24px; border: 1px solid var(--border); background: var(--card); }
.perm-deny { background: var(--red-bg); border-color: var(--red-border); }
.perm-allow { background: var(--green-bg); border-color: var(--green-border); }
.perm-col h4 { margin-bottom: 13px; font-size: 15px; }
.perm-deny h4 { color: var(--red); }
.perm-allow h4 { color: var(--green); }
.perm-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.perm-tags span { font-size: 13px; padding: 5px 12px; border-radius: 7px; background: rgba(255,255,255,.04); border: 1px solid var(--border); color: var(--text-dim); }
.perm-allow .perm-tags span { color: var(--green); border-color: var(--green-border); }

/* ============ hosts 块 ============ */
.host-block { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 28px; }
.host-block h4 { font-size: 14.3px; color: var(--cyan); margin: 18px 0 7px; }
.host-block h4:first-child { margin-top: 0; }
.host-lines {
  display: block; font-family: var(--mono); font-size: 12.8px; line-height: 1.85; color: var(--text-dim);
  background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; padding: 12px 15px; word-break: break-all;
}

/* ============ 汉化网格 ============ */
.l10n-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.l10n-item {
  text-align: center; font-size: 14px; color: var(--text-dim); padding: 19px 12px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: .22s;
}
.l10n-item:hover { border-color: var(--cyan-border); color: var(--cyan); transform: translateY(-2px); box-shadow: var(--glow-cyan); }

/* ============ 步骤 ============ */
.steps { display: flex; flex-direction: column; max-width: 840px; margin: 0 auto; position: relative; }
.steps::before { content: ""; position: absolute; left: 27px; top: 32px; bottom: 32px; width: 2px; background: linear-gradient(var(--cyan-border), rgba(139,92,246,.3)); }
.step { display: flex; gap: 22px; padding: 16px 0; position: relative; }
.step-num {
  flex-shrink: 0; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 800; color: #0a0a12;
  background: var(--grad); border-radius: 50%; z-index: 1;
  box-shadow: 0 6px 18px -4px rgba(34,211,238,.55);
}
.step-body { padding-top: 6px; }
.step-body h3 { font-size: 17px; margin-bottom: 5px; color: var(--text); }
.step-body p { color: var(--text-dim); font-size: 14.5px; }

.tip-box {
  margin-top: 42px; background: var(--amber-bg); border: 1px solid var(--amber-border);
  border-radius: var(--radius); padding: 24px 28px; max-width: 840px; margin-left: auto; margin-right: auto;
}
.tip-box h4 { color: var(--amber); margin-bottom: 11px; font-size: 15.5px; }
.tip-box ul { list-style: none; }
.tip-box li { color: var(--text-body); font-size: 14.3px; padding: 5px 0 5px 22px; position: relative; }
.tip-box li::before { content: "•"; position: absolute; left: 4px; color: var(--amber); font-weight: 800; }

/* ============ FAQ ============ */
.faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 11px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0 22px; transition: .22s; }
.faq-item[open] { border-color: var(--cyan-border); box-shadow: 0 0 0 1px var(--cyan-border), var(--shadow-sm); }
.faq-item summary { cursor: pointer; font-size: 15.5px; font-weight: 600; color: var(--text); padding: 17px 34px 17px 0; list-style: none; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 15px; font-size: 21px; color: var(--cyan); transition: transform .22s; font-weight: 400; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--text-dim); font-size: 14.3px; padding: 0 0 18px; }

/* ============ 下载区（精简） ============ */
.download-card {
  max-width: 720px; margin: 0 auto; text-align: center;
  background: linear-gradient(165deg, rgba(34,211,238,.07), rgba(139,92,246,.06) 55%, rgba(255,255,255,.02));
  border: 1px solid var(--cyan-border); border-radius: 18px;
  padding: 44px 40px 40px; box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.download-card::before {
  content: ""; position: absolute; top: -60%; left: 50%; transform: translateX(-50%);
  width: 420px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.15), transparent 70%);
  pointer-events: none;
}
.download-card > * { position: relative; }
.dl-cube-mini {
  width: 74px; height: 74px; margin: 0 auto 18px;
  perspective: 320px; display: flex; align-items: center; justify-content: center;
}
.download-card h3 { font-size: 27px; font-weight: 800; color: var(--text); margin-bottom: 6px; letter-spacing: .3px; }
.dl-file { font-family: var(--mono); font-size: 13px; color: var(--text-mute); margin-bottom: 26px; }

.version-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 26px; text-align: left; }
.version-cell {
  background: rgba(0,0,0,.25); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 15px 18px;
}
.version-cell .vc-label { font-size: 12px; color: var(--text-mute); margin-bottom: 5px; letter-spacing: .5px; }
.version-cell .vc-value { font-size: 15.5px; font-weight: 700; color: var(--text); }
.version-cell .vc-value .vc-hl { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.version-cell .vc-sub { display: block; font-size: 12px; color: var(--text-mute); font-weight: 400; margin-top: 2px; }
.dl-meta { display: flex; gap: 9px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }

/* ============ 免责声明 ============ */
.disclaimer-section { padding-bottom: 70px; }
.disclaimer { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 30px; }
.disclaimer h3 { font-size: 17px; margin-bottom: 11px; color: var(--text); }
.disclaimer p { color: var(--text-mute); font-size: 13.8px; }
.disclaimer p strong { color: var(--text-body); }

/* ============ 页脚 ============ */
.footer { border-top: 1px solid var(--border); padding: 40px 0; background: var(--bg-alt); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-brand { font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 9px; font-size: 14.5px; }
.footer p { color: var(--text-mute); font-size: 13px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-dim); text-decoration: none; font-size: 13.5px; transition: color .18s; }
.footer-links a:hover { color: var(--cyan); }

/* ============ 回到顶部 ============ */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px; width: 45px; height: 45px; border-radius: 12px;
  border: 1px solid var(--cyan-border); background: rgba(10,10,18,.85); color: var(--cyan);
  font-size: 18px; cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .25s; z-index: 800; backdrop-filter: blur(8px);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--cyan); color: #0a0a12; box-shadow: var(--glow-cyan); }

/* ============ 弹窗（下载确认） ============ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(3, 4, 10, .66);
  backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
  display: none; align-items: center; justify-content: center; z-index: 1100; padding: 20px;
}
.modal-overlay.open { display: flex; animation: fadeIn .2s ease; }
.modal {
  background: var(--card); border: 1px solid var(--border-strong);
  border-radius: 16px; max-width: 580px; width: 100%; max-height: 88vh; overflow-y: auto;
  box-shadow: 0 30px 90px -16px rgba(0,0,0,.8), 0 0 50px -20px rgba(34,211,238,.3);
  animation: modalIn .3s cubic-bezier(.16,1,.3,1);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(24px) scale(.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal-head { padding: 23px 28px 17px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 12px; }
.modal-head-icon {
  width: 42px; height: 42px; background: var(--amber-bg); border: 1px solid var(--amber-border);
  border-radius: 11px; display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0;
}
.modal-head h3 { font-size: 18px; color: var(--text); }
.modal-head p { font-size: 12.8px; color: var(--text-mute); }
.modal-close { margin-left: auto; background: none; border: none; font-size: 22px; color: var(--text-mute); cursor: pointer; padding: 4px 8px; line-height: 1; transition: color .15s; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px 28px 8px; }
.modal-check { display: flex; gap: 12px; padding: 11px 0; align-items: flex-start; }
.modal-check-num {
  flex-shrink: 0; width: 25px; height: 25px; background: var(--cyan-soft); color: var(--cyan);
  border: 1px solid var(--cyan-border); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 12.5px; font-weight: 700; margin-top: 2px;
}
.modal-check p { font-size: 14px; color: var(--text-body); }
.modal-check p strong { color: var(--text); }
.modal-check .danger { color: var(--red); font-weight: 600; }
.modal-foot { padding: 18px 28px 24px; display: flex; gap: 11px; justify-content: flex-end; flex-wrap: wrap; }

/* ============ 滚动显现 ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .feature-grid, .browser-grid { grid-template-columns: repeat(2, 1fr); }
  .l10n-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid, .feat-two-col, .perm-grid { grid-template-columns: 1fr; }
  .hero-inner { grid-template-columns: 1fr; gap: 10px; }
  .hero-visual { order: -1; }
  .cube-stage { width: 260px; height: 260px; }
  .cube { width: 160px; height: 160px; }
  .cube .f-front  { transform: translateZ(80px); }
  .cube .f-back   { transform: rotateY(180deg) translateZ(80px); }
  .cube .f-right  { transform: rotateY(90deg) translateZ(80px); }
  .cube .f-left   { transform: rotateY(-90deg) translateZ(80px); }
  .cube .f-top    { transform: rotateX(90deg) translateZ(80px); }
  .cube .f-bottom { transform: rotateX(-90deg) translateZ(80px); }
  .stats-grid { margin-top: 44px; }

  .nav-links {
    position: fixed; top: 66px; right: 0; width: min(285px, 82vw); height: calc(100vh - 66px);
    background: rgba(10,10,18,.97); flex-direction: column; padding: 30px 28px; gap: 20px;
    transform: translateX(100%); transition: transform .28s ease;
    border-left: 1px solid var(--border);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .section { padding: 62px 0; }
  .hero { padding: 112px 0 58px; }
  .hide-mobile { display: none; }
  .feature-grid, .browser-grid, .stats-grid, .l10n-grid, .version-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .steps::before { left: 20px; }
  .step-num { width: 42px; height: 42px; font-size: 17px; }
  .step { gap: 15px; }
  .download-card { padding: 32px 22px 28px; }
  .modal-body, .modal-foot { padding-left: 20px; padding-right: 20px; }
  .back-to-top { bottom: 18px; right: 18px; width: 41px; height: 41px; }
}