@import url('https://fonts.googleapis.com/css2?family=Didact+Gothic&family=Poiret+One&display=swap');

:root{
  --ink:#0b0b16;
  --ink2:#1a1a2e;
  --red:#ff0000;
  --mag:#ff006e;
  --paper:#f4eefb;
  --dim:#a49bb5;
  --line:rgba(255,0,110,.32);
  --deco:'Poiret One','Didact Gothic',system-ui,sans-serif;
  --body:'Didact Gothic','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding-bottom:5.8rem;overflow-x:hidden;
  font-family:var(--body);font-size:17px;line-height:1.78;color:var(--paper);
  background-color:var(--ink);
  background-image:
    radial-gradient(58vw 38vw at 92% -6%,rgba(255,0,110,.26),transparent 68%),
    radial-gradient(52vw 40vw at -10% 26%,rgba(255,0,0,.16),transparent 70%),
    linear-gradient(180deg,#0b0b16 0%,#14102a 55%,#0b0b16 100%);
  background-repeat:no-repeat;
}
body::before{
  content:'';position:fixed;inset:0;z-index:60;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.045) 0 1px,transparent 1px 4px);
  opacity:.75;
}
::selection{background:var(--mag);color:#0b0b16}
a{color:var(--mag);text-decoration:none}
a:hover{color:var(--red)}
img{max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--mag);outline-offset:3px}

/* 底部固定条 */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:100;
  display:flex;align-items:center;gap:.35rem;
  padding:.45rem .5rem calc(.45rem + env(safe-area-inset-bottom));
  background:rgba(11,11,22,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(6px);
  box-shadow:0 -10px 34px rgba(255,0,110,.16);
}
.dock-mark{
  flex:0 0 auto;width:46px;height:46px;display:grid;place-items:center;
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(255,0,110,.22),rgba(255,0,0,.12));
  box-shadow:inset 0 0 14px rgba(255,0,110,.35);
}
.dock-mark img{width:30px;height:30px;object-fit:contain}
.mark-glyph{font-family:var(--deco);font-size:22px;line-height:1;color:#fff;text-shadow:0 0 12px var(--mag)}
.dock-nav{flex:1 1 auto;min-width:0;overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
.dock-nav::-webkit-scrollbar{display:none}
.dock-nav ul{display:flex;align-items:center;gap:.1rem;margin:0;padding:0;list-style:none}
.dock-nav a{
  display:inline-flex;align-items:center;gap:.45rem;min-height:44px;
  padding:.5rem .62rem;font-size:15px;line-height:1.2;white-space:nowrap;
  color:var(--paper);letter-spacing:.02em;
}
.dock-nav a::before{
  content:'';width:5px;height:5px;flex:0 0 auto;transform:rotate(45deg);
  background:var(--mag);box-shadow:0 0 8px var(--mag);
}
.dock-nav a:hover,.dock-nav a.is-active{color:#fff;background:rgba(255,0,110,.16)}
.dock-nav a.is-active::before{background:var(--red);box-shadow:0 0 10px var(--red)}

/* 首屏 */
.hero{
  position:relative;isolation:isolate;overflow:hidden;
  min-height:100svh;display:grid;align-content:end;justify-items:end;text-align:right;
  padding:4.5rem clamp(1.05rem,5vw,3rem) 4.6rem;
  clip-path:polygon(0 0,100% 0,100% 93%,0 100%);
  background:linear-gradient(215deg,#1a1a2e,#0b0b16 65%);
}
.hero-img{
  position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover;
  opacity:.55;filter:saturate(1.3) contrast(1.06) hue-rotate(-8deg);
}
.hero::after{
  content:'';position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(205deg,rgba(26,26,46,.12),rgba(11,11,22,.95) 72%),
    radial-gradient(45vw 45vw at 88% 4%,rgba(255,0,110,.5),transparent 70%);
}
.hero-ghost{
  position:absolute;left:0;bottom:-.1em;z-index:0;
  font-family:var(--deco);font-size:clamp(8rem,34vw,20rem);line-height:.75;
  letter-spacing:-.02em;color:transparent;
  -webkit-text-stroke:2px rgba(255,0,110,.55);
  pointer-events:none;user-select:none;
}
.hero h1{
  position:relative;z-index:1;margin:0;max-width:16ch;
  font-family:var(--deco);font-weight:400;
  font-size:clamp(2.35rem,11vw,6.2rem);line-height:1.04;letter-spacing:.03em;
  color:#fff;
  text-shadow:0 0 12px rgba(255,0,110,.92),0 0 44px rgba(255,0,0,.5);
}
.glitch::before,.glitch::after{
  content:attr(data-text);position:absolute;inset:0;
  pointer-events:none;opacity:.82;
}
.glitch::before{color:var(--red);clip-path:inset(0 0 56% 0);animation:gl 4.4s infinite steps(2)}
.glitch::after{color:var(--mag);clip-path:inset(52% 0 0 0);animation:gl 3.4s .5s infinite reverse steps(2)}
@keyframes gl{
  0%,90%,100%{transform:translate(0,0)}
  91%{transform:translate(-4px,2px)}
  95%{transform:translate(4px,-2px)}
}
.hero-cue{
  position:relative;z-index:1;margin-top:1.5rem;font-size:1.5rem;line-height:1;
  color:var(--mag);text-shadow:0 0 14px var(--mag);
  animation:bob 2.6s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}

/* 版式骨架 */
main{
  max-width:1180px;margin:0 auto;
  padding:0 clamp(1.05rem,4.5vw,2.6rem);
  display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:0 3.2rem;align-items:start;
}
section{min-width:0;grid-column:1}
.rail{grid-column:2;position:sticky;top:2rem;padding:2.6rem 0 3rem}
.rail-h{
  margin:0;font-family:var(--deco);font-weight:400;font-size:1.5rem;
  letter-spacing:.16em;color:#fff;text-shadow:0 0 14px rgba(255,0,110,.8);
}
.rail .subtitle{
  margin:.55rem 0 1.2rem;padding-bottom:1.2rem;font-size:15px;line-height:1.7;
  color:var(--dim);border-bottom:1px solid rgba(255,255,255,.12);
}
.rail-list{list-style:none;margin:0;padding:0}
.rail-list li{margin:0}
.rail-list a{
  display:flex;align-items:baseline;gap:.6rem;min-height:44px;padding:.5rem .15rem;
  font-size:15px;color:#cfc7de;border-bottom:1px solid rgba(255,255,255,.07);
}
.rail-list a::before{content:'—';color:var(--mag);font-size:.9em;line-height:1.4}
.rail-list a:hover{color:#fff;background:rgba(255,0,110,.1)}

/* 正文区块 */
section > article{scroll-margin-top:2rem}
section > article:not(.hero){padding:3.4rem 0;border-top:1px solid rgba(255,255,255,.1)}
section h2{
  margin:0;font-family:var(--deco);font-weight:400;
  font-size:clamp(1.7rem,4.6vw,2.55rem);line-height:1.26;letter-spacing:.04em;
  color:#fff;text-shadow:0 0 12px rgba(255,0,110,.72);
}
section h2 + p{margin:.75rem 0 1.2rem;color:var(--dim);font-size:16px}
section h3{margin:2rem 0 .4rem;font-size:1.18rem;line-height:1.5;color:#fff;letter-spacing:.02em}
section p{margin:0 0 1.1rem;color:#dcd5ea}
section ul,section ol{margin:0 0 1.2rem;padding-left:1.35rem}
section li{margin-bottom:.5rem;color:#dcd5ea}
section ul li::marker{content:'◆ ';color:var(--mag);font-size:.75em}
section ol li::marker{color:var(--mag);font-weight:700}
section strong{color:#fff;background:linear-gradient(transparent 62%,rgba(255,0,110,.45) 62%)}
section a{border-bottom:1px solid rgba(255,0,110,.5)}
section blockquote{
  margin:1.5rem 0;padding:.9rem 1.1rem;
  background:var(--ink2);border-left:3px solid var(--mag);color:#efe7fb;
}
section blockquote p:last-child{margin:0}
section table{width:100%;border-collapse:collapse;font-size:16px}
section th,section td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid rgba(255,255,255,.12)}
section th{color:var(--mag);font-weight:400}
section img{margin:1.2rem 0;width:100%}
section code{font-size:.94em;background:#221c38;padding:.1em .35em;color:#ffd7e8}

/* 页脚 */
.foot{
  max-width:1180px;margin:2.4rem auto 0;
  padding:2.6rem clamp(1.05rem,4.5vw,2.6rem) 2rem;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(26,26,46,.55),transparent);
}
.sub{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin:0 0 2.2rem;max-width:520px}
.sub label{font-family:var(--deco);font-size:15px;letter-spacing:.2em;color:var(--mag)}
.sub input{
  flex:1 1 13rem;min-height:46px;padding:.5rem .8rem;
  background:#12101f;border:1px solid var(--line);color:#fff;
  font-family:inherit;font-size:16px;border-radius:0;
}
.sub input::placeholder{color:#7a7290}
.sub button{
  min-height:46px;padding:.5rem 1.5rem;border:0;border-radius:0;
  background:var(--mag);color:#0b0b16;font-family:inherit;font-size:16px;
  font-weight:700;letter-spacing:.1em;cursor:pointer;
  box-shadow:0 0 16px rgba(255,0,110,.5);
}
.sub button:hover{background:var(--red);box-shadow:0 0 24px rgba(255,0,0,.7)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:1.6rem}
.foot-grid dl{margin:0}
.foot-grid dt{
  margin-bottom:.5rem;font-family:var(--deco);font-size:14px;
  letter-spacing:.22em;color:var(--mag);
}
.foot-grid dd{margin:0 0 .2rem;font-size:15px;line-height:1.7;color:var(--dim)}
.foot-grid dd a{display:inline-flex;align-items:center;min-height:40px;color:#cfc7de}
.foot-grid dd a:hover{color:#fff}
.foot-bar{
  margin:2rem 0 0;padding-top:1.1rem;font-size:14px;color:#8b8299;
  border-top:1px dashed rgba(255,255,255,.14);
}

/* 滚动揭示 */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

@media (max-width:860px){
  main{grid-template-columns:1fr}
  .rail{grid-column:1;position:static;padding:2.4rem 0 0;border-top:1px solid rgba(255,255,255,.1)}
  .rail-list{display:grid;grid-template-columns:1fr 1fr;gap:0 .9rem}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-grid dl:first-child{grid-column:1 / -1}
}
@media (max-width:520px){
  body{font-size:16px}
  .hero{min-height:92svh;padding-bottom:4.8rem}
  .hero h1{max-width:12ch}
  .dock{padding-left:.4rem;padding-right:.4rem;gap:.25rem}
  .dock-nav a{font-size:15px;padding:.5rem .55rem}
  .rail-list{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  section > article:not(.hero){padding:2.6rem 0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .glitch::before,.glitch::after,.hero-cue{animation:none}
  .js .reveal{opacity:1;transform:none;transition:none}
}

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