@import url('https://fonts.googleapis.com/css2?family=Cormorant+Infant:wght@300;400;500;600;700&family=Great+Vibes&display=swap');

:root{
  --v1:#6514ff;
  --v2:#bf00ff;
  --ink:#1c1726;
  --bg:#100b19;
  --fg:#f5efff;
  --dim:#c6b9df;
  --glass:rgba(255,255,255,.065);
  --glass-2:rgba(255,255,255,.11);
  --line:rgba(255,255,255,.17);
  --r:18px;
  --pad:clamp(16px,4vw,48px);
  --shell:1180px;
  --sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --disp:"Cormorant Infant","Songti SC","Noto Serif SC",Georgia,serif;
  --script:"Great Vibes","Songti SC",cursive;
}

*{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.78;
  letter-spacing:.005em;
  overflow-x:hidden;
  overflow-wrap:break-word;
  -webkit-text-size-adjust:100%;
}

body::before{
  content:"";
  position:fixed;
  inset:-24%;
  z-index:-2;
  background:
    radial-gradient(38vw 38vw at 10% 6%,rgba(101,20,255,.62),transparent 62%),
    radial-gradient(34vw 34vw at 90% 26%,rgba(191,0,255,.46),transparent 60%),
    radial-gradient(48vw 48vw at 58% 96%,rgba(101,20,255,.34),transparent 66%);
  filter:blur(8px);
  animation:drift 26s ease-in-out infinite alternate;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.045) 0 1px,transparent 1px 92px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 92px);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 88%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 88%);
}

@keyframes drift{
  0%{transform:translate3d(0,0,0) scale(1)}
  100%{transform:translate3d(-3%,2.5%,0) scale(1.09)}
}

h1,h2,h3{font-family:var(--disp);font-weight:600;line-height:1.15;letter-spacing:.01em}

p{margin:0 0 1.05em}

a{color:#ddbdff}

img{max-width:100%;height:auto;display:block}

hr{border:0}

:focus-visible{outline:3px solid #fff;outline-offset:3px}

/* ---------- 顶部细条 ---------- */
.ribbon{
  background:linear-gradient(90deg,var(--v1),var(--v2) 55%,var(--v1));
  background-size:220% 100%;
  color:#fff;
  font-size:16px;
  letter-spacing:.16em;
  text-align:center;
  padding:7px var(--pad);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  animation:slide 16s linear infinite alternate;
}
.ribbon span{display:inline-block;text-shadow:0 1px 0 rgba(0,0,0,.25)}
@keyframes slide{0%{background-position:0 0}100%{background-position:100% 0}}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;
  top:0;
  z-index:40;
  display:flex;
  align-items:center;
  gap:14px;
  padding:11px var(--pad);
  background:rgba(16,11,25,.74);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}

.mark{
  flex:0 0 auto;
  width:46px;
  height:46px;
  border-radius:50%;
  display:grid;
  place-items:center;
  text-decoration:none;
  background:linear-gradient(140deg,var(--v1),var(--v2));
  box-shadow:0 10px 26px rgba(101,20,255,.5);
  transition:transform .24s ease,box-shadow .24s ease;
}
.mark:hover{transform:rotate(-8deg) scale(1.06);box-shadow:0 14px 32px rgba(191,0,255,.6)}
.mark-glyph{font-family:var(--script);font-size:27px;color:#fff;line-height:1}

.pills{
  display:flex;
  flex-wrap:wrap;
  gap:7px;
  flex:1 1 auto;
  justify-content:flex-end;
}
.pills a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--fg);
  font-size:16px;
  text-decoration:none;
  transition:background .22s ease,color .22s ease,transform .22s ease,border-color .22s ease;
}
.pills a:hover,.pills a:focus-visible{
  background:linear-gradient(135deg,var(--v1),var(--v2));
  border-color:transparent;
  color:#fff;
  transform:translateY(-2px);
}

/* ---------- Hero ---------- */
.hero{
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(26px,5vw,56px) var(--pad) clamp(30px,5vw,72px);
  min-height:calc(100svh - 118px);
  display:grid;
  grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);
  gap:clamp(22px,4.5vw,60px);
  align-items:center;
}

.hero-say{text-align:left}

.hero h1{
  margin:0 0 18px;
  font-size:clamp(2.1rem,6.2vw,4.4rem);
  line-height:1.06;
  letter-spacing:-.015em;
  background:linear-gradient(96deg,#fff 22%,#e6d3ff 55%,var(--v2) 96%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-wrap:balance;
}

.lede{
  font-size:1.12rem;
  color:var(--dim);
  max-width:34ch;
  margin-bottom:26px;
}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:52px;
  padding:12px 30px;
  border-radius:999px;
  font-size:17px;
  letter-spacing:.08em;
  text-decoration:none;
  color:#fff;
  background:linear-gradient(120deg,var(--v1),var(--v2));
  box-shadow:0 14px 34px rgba(101,20,255,.42);
  transition:transform .24s ease,box-shadow .24s ease,filter .24s ease;
}
.cta:hover{transform:translateY(-3px);filter:saturate(140%) brightness(1.08);box-shadow:0 18px 40px rgba(191,0,255,.5)}

.hero-art{
  position:relative;
  margin:0;
  border-radius:26px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  aspect-ratio:4/5;
  box-shadow:0 26px 60px rgba(20,8,44,.55);
}
.hero-art .hero-img{
  width:100%;
  height:100%;
  object-fit:cover;
  transform:scale(1.04);
  will-change:transform;
}
.hero-art .tint{
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(101,20,255,.55),rgba(191,0,255,.28) 52%,rgba(28,23,38,.66));
  mix-blend-mode:soft-light;
  pointer-events:none;
}

/* ---------- 主区 ---------- */
.page{
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(22px,4vw,52px) var(--pad) clamp(44px,7vw,96px);
  display:grid;
  grid-template-columns:minmax(0,258px) minmax(0,1fr);
  gap:clamp(22px,3.6vw,52px);
  align-items:start;
}

.rail{
  position:sticky;
  top:96px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:18px 16px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.rail-h{
  margin:0;
  font-size:1.08rem;
  letter-spacing:.2em;
  text-transform:none;
}
.rail hr{
  height:3px;
  max-width:120px;
  margin:10px 0 14px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--v1),var(--v2));
}

.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  counter-reset:rl;
}
.rail-list li{counter-increment:rl}
.rail-list a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:40px;
  padding:6px 9px;
  border-radius:12px;
  color:var(--dim);
  font-size:16px;
  text-decoration:none;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.rail-list a::before{
  content:counter(rl,decimal-leading-zero);
  font-family:var(--disp);
  font-size:.86rem;
  letter-spacing:.08em;
  color:var(--v2);
  flex:0 0 auto;
}
.rail-list a:hover{background:rgba(101,20,255,.42);color:#fff;transform:translateX(2px)}

.rail-top{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  margin-top:8px;
  padding:0 9px;
  font-size:16px;
  color:#fff;
  text-decoration:none;
  border-top:1px solid var(--line);
  width:100%;
}

/* ---------- 正文 ---------- */
.body{
  min-width:0;
  display:flex;
  flex-direction:column;
  gap:clamp(20px,2.6vw,30px);
}

.body > div{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:clamp(20px,3.2vw,40px);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  scroll-margin-top:118px;
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.body > div:nth-of-type(2n){
  background:var(--glass-2);
  border-color:rgba(191,0,255,.34);
}
.body > div:target{
  border-color:var(--v2);
  box-shadow:0 0 0 2px rgba(191,0,255,.42),0 20px 50px rgba(20,8,44,.5);
}

.body h2{
  margin:0;
  font-size:clamp(1.5rem,3.1vw,2.15rem);
  line-height:1.2;
}
.body h2 + hr{
  height:4px;
  max-width:210px;
  margin:12px 0 20px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--v1),var(--v2) 62%,transparent);
}
.body hr{
  height:2px;
  margin:24px 0;
  background:linear-gradient(90deg,var(--line),transparent);
  border-radius:2px;
}
.body h3{
  margin:26px 0 10px;
  font-size:clamp(1.2rem,2.2vw,1.5rem);
  color:#fff;
}
.body p{color:#e7dff6}
.body strong{color:#fff}
.body a{color:#e0b8ff;text-underline-offset:3px}
.body a:hover{color:#fff}
.body ul,.body ol{padding-left:1.25em;margin:0 0 1.1em}
.body li{margin-bottom:.5em}
.body blockquote{
  margin:0 0 1.1em;
  padding:14px 18px;
  border-left:4px solid var(--v2);
  border-radius:0 14px 14px 0;
  background:rgba(191,0,255,.12);
}
.body img{border-radius:14px;margin:0 0 1.1em}
.body figure{margin:0 0 1.1em}
.body code{font-size:.94em;background:rgba(0,0,0,.36);padding:2px 6px;border-radius:6px}

/* ---------- 页脚 ---------- */
.foot{
  border-top:1px solid var(--line);
  background:rgba(20,14,31,.72);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  padding:clamp(28px,5vw,58px) var(--pad) 22px;
}

.foot-band{
  max-width:var(--shell);
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  align-items:flex-end;
  justify-content:space-between;
}
.foot-id{display:flex;align-items:center;gap:12px}
.foot-mark{
  width:42px;height:42px;
  flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:50%;
  font-family:var(--script);font-size:24px;color:#fff;
  background:linear-gradient(140deg,var(--v1),var(--v2));
}
.foot-brand{
  margin:0;
  font-family:var(--disp);
  font-size:1.35rem;
  color:#fff;
}

.sub{min-width:min(100%,300px)}
.sub-h{
  display:block;
  font-size:16px;
  letter-spacing:.16em;
  color:var(--dim);
  margin-bottom:8px;
}
.sub-row{display:flex;gap:8px;flex-wrap:wrap}
.sub-in{
  flex:1 1 150px;
  min-height:44px;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.07);
  color:var(--fg);
  font-size:16px;
  font-family:inherit;
}
.sub-in::placeholder{color:#a89cc4}
.sub-btn{
  min-height:44px;
  padding:10px 24px;
  border:0;
  border-radius:999px;
  font-size:16px;
  font-family:inherit;
  color:#fff;
  cursor:pointer;
  background:linear-gradient(120deg,var(--v1),var(--v2));
  transition:filter .22s ease,transform .22s ease;
}
.sub-btn:hover{filter:brightness(1.12);transform:translateY(-2px)}

.foot-grid{
  max-width:var(--shell);
  margin:clamp(24px,4vw,42px) auto 0;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}
.foot-grid dl{margin:0}
.foot-grid dt{
  font-family:var(--disp);
  font-size:16px;
  letter-spacing:.2em;
  color:#fff;
  margin-bottom:8px;
}
.foot-grid dd{
  margin:0 0 4px;
  font-size:16px;
  color:var(--dim);
}
.foot-nav dd a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:2px 0;
  color:var(--dim);
  text-decoration:none;
  transition:color .2s ease;
}
.foot-nav dd a:hover{color:#fff}

.foot-bottom{
  max-width:var(--shell);
  margin:clamp(22px,3vw,32px) auto 0;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:16px;
  color:#a89cc4;
}

/* ---------- 入场 ---------- */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before,.ribbon{animation:none}
  .js .rv{opacity:1;transform:none;transition:none}
  .hero-art .hero-img{transform:none !important}
}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  .hero{
    grid-template-columns:minmax(0,1fr);
    min-height:0;
    padding-top:26px;
  }
  .hero-art{aspect-ratio:16/11;order:2}
  .lede{max-width:none}
  .page{grid-template-columns:minmax(0,1fr)}
  .rail{position:static}
  .rail-list{display:flex;flex-wrap:wrap;gap:6px}
  .rail-list a{padding:6px 12px;background:rgba(255,255,255,.06);border-radius:999px}
  .rail-top{width:auto;border-top:0;margin-top:12px;background:rgba(101,20,255,.35);border-radius:999px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  body{font-size:17px}
  .ribbon{font-size:16px;letter-spacing:.08em}
  .top{padding:9px var(--pad);gap:10px}
  .pills{gap:6px;justify-content:flex-start}
  .pills a{padding:8px 12px;font-size:16px}
  .hero h1{font-size:clamp(1.95rem,9vw,2.6rem)}
  .cta{width:100%;justify-content:center}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-band{align-items:stretch}
  .sub{min-width:100%}
}

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