:root{
  --bg:#0E0E12;
  --acc:#FF4D2E;
  --ink:#F2F0EC;
  --dim:rgba(242,240,236,.7);
  --line:rgba(242,240,236,.14);
  --panel:#15151b;
  --head:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Barlow','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;line-height:1.65;letter-spacing:.01em;overflow-x:hidden;
}
body.menu-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 1em}
h1,h2,h3{font-family:'Barlow Condensed','PingFang SC','Microsoft YaHei',sans-serif;font-weight:700;line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px}

/* 顶栏 */
.mast{position:sticky;top:0;z-index:60;background:rgba(14,14,18,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.mast-in{display:flex;align-items:center;gap:.75rem;padding:0 clamp(1rem,4vw,2.5rem);min-height:var(--head)}
.mark{display:inline-flex;align-items:center;gap:.55rem;min-height:44px;font-family:'Barlow Condensed',sans-serif;font-size:1.22rem;font-weight:700;letter-spacing:.05em}
.mark::before{content:"";width:11px;height:11px;border-radius:2px;background:var(--acc);box-shadow:0 0 0 3px rgba(255,77,46,.2)}
.mark-img{width:auto;height:26px}
.hnav{margin-left:auto}
.hnav p{display:flex;flex-wrap:wrap;gap:.05rem;margin:0}
.hnav a{display:inline-flex;align-items:center;min-height:44px;padding:.4rem .6rem;font-size:.95rem;color:var(--dim);position:relative}
.hnav a::after{content:"";position:absolute;left:.6rem;right:.6rem;bottom:9px;height:2px;background:var(--acc);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.hnav a:hover{color:var(--ink)}
.hnav a:hover::after{transform:scaleX(1)}
.burger{
  margin-left:auto;display:inline-flex;align-items:center;min-height:44px;padding:0 .9rem;
  background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:10px;
  font:inherit;font-size:.95rem;cursor:pointer;letter-spacing:.16em;
}
.burger:hover{border-color:var(--acc);color:var(--acc)}
.hnav + .burger{margin-left:.2rem}

/* 滚字条 */
.pulsebar{overflow:hidden;border-bottom:1px solid var(--line);background:#101016}
.pulse-track{display:flex;gap:2rem;white-space:nowrap;padding:.4rem 0;animation:slide 34s linear infinite}
.pulse-a{display:inline-flex;gap:2rem;margin:0;font-family:'Barlow Condensed',sans-serif;font-size:.98rem;letter-spacing:.22em;color:var(--acc)}
.pulse-a span::after{content:"/";margin-left:2rem;color:rgba(255,77,46,.4)}
@keyframes slide{to{transform:translate3d(-50%,0,0)}}

/* 全屏遮罩菜单 */
.curtain{
  position:fixed;inset:0;z-index:80;background:var(--bg);
  display:flex;flex-direction:column;justify-content:center;
  padding:clamp(1.2rem,6vw,3.5rem);
  transform:translateY(-102%);visibility:hidden;
  transition:transform .45s cubic-bezier(.7,0,.2,1),visibility .45s;
}
body.menu-open .curtain{transform:none;visibility:visible}
.curtain-x{align-self:flex-end;min-height:44px;padding:0 1rem;background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:10px;font:inherit;font-size:.95rem;letter-spacing:.16em;cursor:pointer}
.curtain-x:hover{color:var(--acc);border-color:var(--acc)}
.curtain-nav{display:flex;flex-direction:column;margin-top:1.4rem}
.curtain-nav a{
  display:flex;align-items:center;min-height:56px;padding:.3rem 0;
  border-bottom:1px solid var(--line);
  font-family:'Barlow Condensed',sans-serif;font-weight:700;
  font-size:clamp(1.5rem,7vw,2.9rem);letter-spacing:-.01em;
  transition:color .2s ease,padding-left .25s ease;
}
.curtain-nav a:hover{color:var(--acc);padding-left:.7rem}

/* 首屏 */
.hero{
  display:grid;grid-template-columns:1fr;
  min-height:100vh;min-height:calc(100svh - var(--head) - 30px);
}
.hero-solo{grid-template-columns:1fr}
.hero-solo .hero-media{display:none}
.hero-media{overflow:hidden;background:#121218;min-height:32vh;max-height:36vh}
.hero-img{width:100%;height:100%;object-fit:cover;filter:contrast(1.08) saturate(.9)}
.hero-copy{
  display:flex;flex-direction:column;justify-content:center;align-items:flex-end;
  text-align:right;gap:1.1rem;padding:clamp(1.3rem,5vw,3.5rem);
}
.hero-h1{
  margin:0;font-size:clamp(2.1rem,8vw,5.4rem);line-height:1.04;letter-spacing:-.03em;
  background:linear-gradient(175deg,#FFFFFF 0%,#F2F0EC 45%,#8E8A84 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
}
.hero-h1 .ch{
  display:inline-block;background:inherit;
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
  animation:chIn .62s cubic-bezier(.16,.84,.28,1) both;
  animation-delay:calc(var(--i,0) * 38ms);
}
@keyframes chIn{from{opacity:0;transform:translateY(.42em) rotate(3deg)}to{opacity:1;transform:none}}
.hero-cta{
  display:inline-flex;align-items:center;min-height:46px;padding:0 1.4rem;
  border:1px solid var(--acc);border-radius:10px;color:var(--acc);
  font-size:.98rem;letter-spacing:.08em;transition:background .2s ease,color .2s ease;
}
.hero-cta:hover{background:var(--acc);color:#0E0E12}

/* 正文骨架 */
.wrap{padding:clamp(1.8rem,5vw,3.6rem) clamp(1rem,4vw,2.5rem);display:block}
.stream{min-width:0}
.rail{min-width:0}
.prose{max-width:70ch}
.prose section{padding:clamp(1.5rem,3vw,2.4rem) 0;border-top:1px solid var(--line)}
.prose section:first-child{border-top:0;padding-top:0}
.prose section[id]{scroll-margin-top:calc(var(--head) + 46px)}
.prose h2{font-size:clamp(1.5rem,4.2vw,2.15rem);margin:.15em 0 .55em}
.prose h3{font-size:1.18rem;color:var(--acc);margin-top:1.2em}
.prose small{
  display:block;font-family:'Barlow Condensed',sans-serif;font-size:.95rem;
  letter-spacing:.22em;color:var(--acc);margin-bottom:.15rem;
}
.prose p,.prose li,.prose dd{color:var(--dim)}
.prose ul,.prose ol{padding-left:1.25em;margin:0 0 1em}
.prose li{margin-bottom:.35em}
.prose strong{color:var(--ink)}
.prose a{color:var(--acc);text-decoration:underline;text-underline-offset:3px}
.prose img{border-radius:10px;margin:1.1rem 0;box-shadow:0 18px 40px -24px #000}
.prose blockquote{
  margin:1.2rem 0;padding:.2rem 0 .2rem 1.1rem;border-left:3px solid var(--acc);
  font-family:'Barlow Condensed',sans-serif;font-size:1.12rem;color:var(--ink);
}
.prose hr{border:0;border-top:1px solid var(--line);margin:1.6rem 0}

/* 侧栏 */
.rail{border-left:2px solid var(--acc);padding:.1rem 0 .1rem 1rem;align-self:start}
.rail small{display:block;font-family:'Barlow Condensed',sans-serif;font-size:.95rem;letter-spacing:.24em;color:var(--acc)}
.rail h2{font-size:1.08rem;margin:.1rem 0 .7rem}
.rail ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.rail a{display:flex;align-items:center;min-height:42px;font-size:.95rem;color:var(--dim);border-bottom:1px dashed var(--line)}
.rail a:hover{color:var(--acc)}

/* 页脚 */
.foot{
  border-top:1px solid var(--line);background:#101016;
  padding:clamp(1.8rem,5vw,3rem) clamp(1rem,4vw,2.5rem) 0;
  display:grid;grid-template-columns:1fr;gap:1.6rem;
}
.f-logo{margin:0 0 .4rem;font-family:'Barlow Condensed',sans-serif;font-size:1.55rem;font-weight:700;letter-spacing:.03em}
.f-desc{color:var(--dim);font-size:.95rem;max-width:34ch;margin:0}
.f-t{font-family:'Barlow Condensed',sans-serif;font-size:.95rem;letter-spacing:.22em;color:var(--acc);margin:0 0 .6rem}
.f-links p{display:flex;flex-wrap:wrap;gap:0 .9rem;margin:0}
.f-links a{display:inline-flex;align-items:center;min-height:40px;font-size:.95rem;color:var(--dim)}
.f-links a:hover{color:var(--acc)}
.sub{display:flex;flex-wrap:wrap;gap:.5rem}
.sub input{
  flex:1 1 9rem;min-height:46px;padding:.55rem .8rem;font:inherit;font-size:.95rem;
  background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--ink);
}
.sub button{
  min-height:46px;padding:.55rem 1.2rem;font:inherit;font-weight:700;
  background:var(--acc);color:#0E0E12;border:0;border-radius:10px;cursor:pointer;
}
.f-bar{
  grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
  gap:.4rem 1rem;margin-top:.4rem;padding:1rem 0 1.6rem;
  border-top:1px solid var(--line);font-size:.9rem;color:var(--dim);
}
.f-bar p{margin:0}
.f-bar a{display:inline-flex;align-items:center;min-height:40px;color:var(--dim)}
.f-bar a:hover{color:var(--acc)}

/* 滚动淡入 */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}

@media (max-width:899px){
  .hnav{display:none}
}
@media (min-width:900px){
  .hero{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .hero-media{min-height:0;max-height:none}
  .hero-solo{grid-template-columns:1fr}
}
@media (min-width:800px){
  .foot{grid-template-columns:1.4fr 1fr 1.3fr;align-items:start;gap:1.8rem}
}
@media (min-width:1000px){
  .wrap{display:grid;grid-template-columns:210px minmax(0,1fr);gap:clamp(1.6rem,4vw,3rem);max-width:1180px;margin:0 auto;align-items:start}
  .stream{grid-column:2;grid-row:1}
  .rail{grid-column:1;grid-row:1;position:sticky;top:calc(var(--head) + 52px)}
}
@media (max-width:999px){
  .rail{margin-top:2rem;border-left:0;border-top:1px solid var(--line);padding:1rem 0 0}
  .rail ul{flex-direction:row;flex-wrap:wrap;gap:0 1rem}
  .rail a{border-bottom:0;min-height:44px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .pulse-track{animation:none}
  .hero-h1 .ch{animation:none}
  .rv{opacity:1;transform:none;transition:none}
  .curtain{transition:none}
  .curtain-nav a,.hnav a::after{transition:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}