/* ==========================================================================
   吴玉章 · 开屏视觉页  entry.css
   ========================================================================== */

:root{
  --bg:#05070b;
  --bg-2:#080b11;
  --surface:rgba(255,255,255,.03);
  --surface-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --ink:#e8eef8;
  --ink-2:#93a1b5;
  --ink-3:#5b6779;
  --accent:#00e5ff;
  --accent-2:#3b82f6;
  --accent-dim:rgba(0,229,255,.12);
  --glow:0 0 40px rgba(0,229,255,.32);
  --ease:cubic-bezier(.22,.8,.26,1);
  --font-cn:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-en:"SF Pro Display",Inter,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"SF Mono","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html,body{height:100%;}
body.entry{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  overflow:hidden;
  cursor:pointer;
  -webkit-font-smoothing:antialiased;
  position:relative;
}

/* ---------- 背景层 ---------- */
#fx{position:fixed;inset:0;width:100%;height:100%;display:block;z-index:1;}

.grid-lines{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(ellipse 90% 75% at 50% 45%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 75% at 50% 45%,#000 30%,transparent 100%);
}

.halo{
  position:fixed;z-index:0;pointer-events:none;
  width:120vw;height:120vw;max-width:1400px;max-height:1400px;
  left:50%;top:52%;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(0,229,255,.13) 0%,rgba(59,130,246,.09) 32%,transparent 62%);
  filter:blur(20px);
  animation:breathe 9s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{opacity:.75;transform:translate(-50%,-50%) scale(1);}
  50%{opacity:1;transform:translate(-50%,-50%) scale(1.07);}
}

.scan{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(to bottom,rgba(255,255,255,.022) 0 1px,transparent 1px 4px);
  mix-blend-mode:overlay;
}

.veil{
  position:fixed;inset:0;z-index:9;pointer-events:none;
  background:var(--bg);opacity:0;
  transition:opacity .7s var(--ease);
}
body.entering .veil{opacity:1;}
body.entering .e-stage,
body.entering .e-top,
body.entering .e-bot{opacity:0;transform:translateY(-14px);transition:all .5s var(--ease);}

/* ---------- 顶栏 ---------- */
.e-top{
  position:fixed;top:0;left:0;right:0;z-index:5;
  display:flex;align-items:center;justify-content:space-between;
  padding:26px 40px;
  animation:fadeDown .8s var(--ease) both;
}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none;}
.brand-mark{
  font-family:var(--font-en);font-weight:700;font-size:15px;letter-spacing:.14em;
  color:var(--accent);text-shadow:var(--glow);
}
.brand-sep{width:1px;height:14px;background:var(--line-strong);}
.brand-txt{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--ink-3);
}
.e-top-right{font-size:11px;letter-spacing:.2em;color:var(--ink-3);}
.mono{font-family:var(--font-mono);}

/* ---------- 主舞台 ---------- */
.e-stage{
  position:relative;z-index:4;height:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:0 24px;
}

.label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--ink-3);margin:0;
}
.e-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border:1px solid var(--line);border-radius:999px;
  background:var(--surface);backdrop-filter:blur(6px);
  color:var(--ink-2);
  animation:fadeUp .9s var(--ease) .1s both;
}
.e-eyebrow .dot{
  width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px var(--accent);animation:pulse 2.4s infinite;
}
.e-eyebrow i{color:var(--accent);font-style:normal;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.25;}}

.e-title{
  margin:34px 0 0;display:flex;flex-direction:column;gap:2px;line-height:1;
}
.e-title-cn{
  font-size:clamp(52px,9vw,108px);font-weight:700;letter-spacing:.06em;
  background:linear-gradient(180deg,#ffffff 0%,#c9d7ea 55%,#7f8ea3 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:fadeUp 1s var(--ease) .2s both;
}
.e-title-en{
  font-family:var(--font-en);font-weight:700;
  font-size:clamp(26px,5.4vw,66px);letter-spacing:.16em;
  color:transparent;-webkit-text-stroke:1px rgba(0,229,255,.5);
  animation:fadeUp 1s var(--ease) .3s both;
}

.e-sub{
  margin:30px 0 0;max-width:600px;
  font-size:15px;line-height:1.85;color:var(--ink-2);
  animation:fadeUp 1s var(--ease) .42s both;
}
.e-motto{
  margin:14px 0 0;font-family:var(--font-en);font-style:italic;
  font-size:14px;letter-spacing:.04em;color:var(--accent);opacity:.85;
  animation:fadeUp 1s var(--ease) .5s both;
}

.e-actions{
  margin-top:46px;display:flex;flex-direction:column;align-items:center;gap:18px;
  animation:fadeUp 1s var(--ease) .6s both;
}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 32px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.06em;text-decoration:none;
  cursor:pointer;transition:all .22s var(--ease);position:relative;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#04121a;box-shadow:0 0 0 0 rgba(0,229,255,0);
}
.btn-primary:hover{
  box-shadow:0 0 34px rgba(0,229,255,.45);transform:translateY(-2px);
}
.btn-primary svg{transition:transform .22s var(--ease);}
.btn-primary:hover svg{transform:translateX(4px);}
.e-hint{font-size:10px;letter-spacing:.24em;color:var(--ink-3);}

/* ---------- 底栏 ---------- */
.e-bot{
  position:fixed;bottom:0;left:0;right:0;z-index:5;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 40px;font-size:10.5px;letter-spacing:.2em;color:var(--ink-3);
  animation:fadeUp .9s var(--ease) .8s both;
}
.e-bot i{font-style:normal;color:var(--accent);opacity:.6;}
.e-year{color:var(--ink-2);}

/* ---------- 动效 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:none;}}
@keyframes fadeDown{from{opacity:0;transform:translateY(-16px);}to{opacity:1;transform:none;}}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .e-top{padding:20px 22px;}
  .e-top-right{display:none;}
  .e-bot{padding:18px 22px;font-size:9.5px;}
  .e-bot span:first-child{display:none;}
  .e-sub{font-size:14px;max-width:92%;}
  .e-title{margin-top:26px;}
  .e-actions{margin-top:34px;}
}
@media (max-width:560px){
  .e-eyebrow{font-size:9.5px;letter-spacing:.16em;padding:7px 14px;}
  .e-title-en{letter-spacing:.1em;}
  .btn{padding:14px 26px;font-size:13.5px;}
  .e-bot{padding:16px 20px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;}
  #fx{display:none;}
}