@import url('https://fonts.googleapis.com/css2?family=Crimson+Text:wght@400;600;700&family=EB+Garamond:wght@400;500;600;700;800&display=swap');

:root{
--ink:#0d0d0d;
--violet:#8000ff;
--magenta:#ff00ff;
--text:#ece6f7;
--dim:#b6a6d0;
--line:rgba(128,0,255,.34);
--glass:rgba(255,255,255,.05);
--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
--serif:"EB Garamond","Crimson Text",Georgia,"Songti SC","Noto Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
margin:0;
background:
radial-gradient(900px 520px at 88% -8%,rgba(255,0,255,.18),transparent 62%),
radial-gradient(1100px 700px at 4% 2%,rgba(128,0,255,.26),transparent 60%),
var(--ink);
background-attachment:fixed;
color:var(--text);
font-family:var(--serif);
font-size:18px;
line-height:1.75;
overflow-x:hidden;
}
body::before{
content:"";
position:fixed;
inset:0;
z-index:70;
pointer-events:none;
background:repeating-linear-gradient(180deg,rgba(255,255,255,.035) 0 1px,transparent 1px 3px);
opacity:.7;
}
a{color:var(--text);text-decoration:none}
img{max-width:100%;height:auto;display:block}
p{margin:0 0 1em}
h1,h2,h3{line-height:1.22;letter-spacing:.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,6.2vw,4rem);font-weight:700;text-shadow:0 0 26px rgba(255,0,255,.45),0 0 64px rgba(128,0,255,.4)}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--magenta);outline-offset:3px}

/* 头部 */
.hud{
position:sticky;
top:0;
z-index:60;
background:rgba(13,13,13,.86);
backdrop-filter:blur(10px);
border-bottom:1px solid var(--line);
box-shadow:0 0 28px rgba(128,0,255,.22);
}
.bar{
display:flex;
align-items:center;
justify-content:space-between;
gap:16px;
padding:8px clamp(14px,4vw,44px);
border-bottom:1px solid rgba(128,0,255,.14);
}
.brand{
display:inline-flex;
align-items:center;
gap:10px;
min-height:44px;
font-family:var(--mono);
font-size:16px;
letter-spacing:.18em;
text-transform:uppercase;
}
.brand-txt{text-shadow:0 0 14px rgba(128,0,255,.85)}
.mark{width:26px;height:26px;object-fit:contain;filter:drop-shadow(0 0 8px var(--magenta))}
.mark-fallback{
display:block;
width:12px;
height:12px;
background:var(--magenta);
box-shadow:0 0 12px var(--magenta);
clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.contact{
display:inline-flex;
align-items:center;
gap:8px;
min-height:44px;
padding:10px 15px;
border:1px solid rgba(255,0,255,.45);
border-radius:10px;
font-family:var(--mono);
font-size:16px;
color:var(--magenta);
background:rgba(255,0,255,.07);
}
.contact:hover{background:rgba(255,0,255,.2);box-shadow:0 0 18px rgba(255,0,255,.45);color:#fff}
.dot{width:7px;height:7px;flex:0 0 auto;background:var(--magenta);box-shadow:0 0 8px var(--magenta);display:inline-block}
.anchors p{
display:flex;
gap:2px;
margin:0;
padding:0 clamp(8px,3vw,34px);
overflow-x:auto;
scrollbar-width:none;
}
.anchors p::-webkit-scrollbar{display:none}
.anchors a{
display:inline-flex;
align-items:center;
gap:7px;
min-height:46px;
padding:12px 11px;
font-family:var(--mono);
font-size:16px;
color:var(--dim);
white-space:nowrap;
border-bottom:2px solid transparent;
transition:color .2s,border-color .2s,text-shadow .2s;
}
.anchors a:hover,.anchors a:focus-visible{color:#fff;border-bottom-color:var(--magenta);text-shadow:0 0 12px var(--magenta)}
.anchors a .dot{background:var(--violet);box-shadow:0 0 8px var(--violet)}

/* 主视觉 */
main{display:block}
.hero{
position:relative;
display:grid;
grid-template-rows:auto 1fr;
gap:clamp(20px,4vw,40px);
min-height:100vh;
min-height:100svh;
padding:clamp(26px,6vw,60px) clamp(14px,4vw,44px) 0;
}
.hero-copy{max-width:54ch;min-width:0}
.chip{
display:inline-block;
margin-bottom:18px;
padding:6px 13px;
border:1px solid rgba(255,0,255,.5);
border-radius:10px;
background:rgba(255,0,255,.08);
box-shadow:0 0 20px rgba(255,0,255,.3);
font-family:var(--mono);
font-size:16px;
letter-spacing:.2em;
color:var(--magenta);
animation:float 5.5s ease-in-out infinite;
}
@keyframes float{50%{transform:translateY(-6px)}}
.lead{margin:0;max-width:46ch;color:var(--dim);font-size:1.04rem}
.hero-fig{
position:relative;
margin:0;
min-height:34vh;
overflow:hidden;
border-top:1px solid var(--line);
border-radius:10px 10px 0 0;
background:linear-gradient(160deg,rgba(128,0,255,.2),rgba(255,0,255,.08));
will-change:transform;
}
.hero-fig img{width:100%;height:100%;object-fit:cover;filter:contrast(1.06) saturate(1.1)}
.hero-fig::after{
content:"";
position:absolute;
inset:0;
background:linear-gradient(180deg,rgba(13,13,13,.55),transparent 45%,rgba(13,13,13,.75));
}
.hero-plate{
min-height:34vh;
background:repeating-linear-gradient(135deg,rgba(128,0,255,.28) 0 2px,transparent 2px 13px);
}

/* 内容与侧栏 */
.deck{
display:grid;
grid-template-columns:minmax(0,1fr);
gap:clamp(24px,4vw,44px);
max-width:1240px;
margin:0 auto;
padding:clamp(30px,6vw,64px) clamp(14px,4vw,44px);
}
.prose{min-width:0;max-width:70ch}
.prose article[id]{
padding:clamp(26px,4vw,44px) 0;
border-top:1px solid rgba(128,0,255,.2);
scroll-margin-top:132px;
}
.prose article[id]:first-child{border-top:0;padding-top:0}
.prose h2{font-size:clamp(1.4rem,3vw,2rem);color:#fff;text-shadow:0 0 18px rgba(255,0,255,.35)}
.prose h3{font-size:1.15rem;color:#fff;text-shadow:0 0 12px rgba(128,0,255,.5)}
.prose hr,.rail hr{
height:1px;
border:0;
margin:0 0 1.1em;
background:linear-gradient(90deg,var(--magenta),var(--violet),transparent);
box-shadow:0 0 12px rgba(255,0,255,.45);
}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.25em}
.prose li{margin:.4em 0}
.prose a{color:#e7b6ff;border-bottom:1px solid rgba(255,0,255,.45)}
.prose a:hover{color:#fff;background:rgba(255,0,255,.12)}
.prose blockquote{
margin:0 0 1.2em;
padding:14px 18px;
border-left:2px solid var(--magenta);
border-radius:0 10px 10px 0;
background:var(--glass);
color:var(--dim);
}
.prose img{margin:0 0 1.1em;border-radius:10px;border:1px solid var(--line)}
.prose strong{color:#fff}
.prose table{width:100%;border-collapse:collapse;margin:0 0 1.2em}
.prose th,.prose td{border:1px solid rgba(128,0,255,.28);padding:9px 11px;text-align:left}
.prose code,.prose pre{font-family:var(--mono);font-size:16px}
.prose pre{overflow-x:auto;padding:14px;border-radius:10px;background:rgba(0,0,0,.55);border:1px solid var(--line)}

.rail{
min-width:0;
padding:18px 20px 22px;
border:1px solid var(--line);
border-radius:10px;
background:var(--glass);
backdrop-filter:blur(9px);
box-shadow:inset 0 0 40px rgba(128,0,255,.14);
}
.rail h2{margin:0 0 .6em;font-family:var(--mono);font-size:16px;letter-spacing:.24em;color:var(--magenta);text-shadow:0 0 12px rgba(255,0,255,.6)}
.rail-list{list-style:none;margin:0;padding:0}
.rail-list a{
display:block;
min-height:44px;
padding:11px 2px;
border-bottom:1px dashed rgba(128,0,255,.24);
font-size:16px;
color:var(--dim);
}
.rail-list li:last-child a{border-bottom:0}
.rail-list a:hover{color:#fff;text-shadow:0 0 10px var(--magenta)}

/* 页脚 */
footer{
margin-top:clamp(30px,6vw,60px);
display:grid;
grid-template-columns:1fr;
gap:clamp(22px,4vw,32px);
padding:clamp(30px,5vw,54px) clamp(14px,4vw,44px) 18px;
border-top:1px solid var(--line);
background:rgba(255,255,255,.03);
}
.fcol{min-width:0}
.fcol h2{margin:0 0 .55em;font-family:var(--mono);font-size:16px;letter-spacing:.2em;color:var(--violet);text-shadow:0 0 12px rgba(128,0,255,.75)}
.fcol hr{height:1px;border:0;margin:0 0 1em;background:linear-gradient(90deg,rgba(128,0,255,.9),transparent)}
.foot-desc{color:var(--dim);font-size:16px;margin:0}
.f-list{list-style:none;margin:0;padding:0}
.f-list a{display:block;min-height:44px;padding:10px 0;font-size:16px;color:var(--dim)}
.f-list a:hover{color:#fff;text-shadow:0 0 10px var(--magenta)}
.sub{display:flex;flex-wrap:wrap;gap:8px}
.sub input{
flex:1 1 140px;
min-width:0;
min-height:44px;
padding:10px 12px;
border:1px solid var(--line);
border-radius:10px;
background:rgba(0,0,0,.5);
color:#fff;
font-family:var(--serif);
font-size:16px;
}
.sub input::placeholder{color:#8f80a9}
.sub input:focus{outline:none;border-color:var(--magenta);box-shadow:0 0 16px rgba(255,0,255,.45)}
.sub button{
min-height:44px;
padding:10px 18px;
border:1px solid var(--magenta);
border-radius:10px;
background:rgba(255,0,255,.14);
color:#fff;
font-family:var(--mono);
font-size:16px;
cursor:pointer;
}
.sub button:hover{background:rgba(255,0,255,.32);box-shadow:0 0 18px rgba(255,0,255,.5)}
.f-contact{display:inline-flex;align-items:center;min-height:44px;font-size:16px;color:var(--magenta)}
.f-contact:hover{color:#fff;text-shadow:0 0 10px var(--magenta)}
.f-host{margin:.3em 0 0;font-family:var(--mono);font-size:16px;color:var(--dim);word-break:break-all}
.copy{
grid-column:1/-1;
margin:0;
padding-top:16px;
border-top:1px solid rgba(128,0,255,.2);
font-family:var(--mono);
font-size:16px;
color:var(--dim);
}

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

@media (min-width:640px){
footer{grid-template-columns:1fr 1fr}
}
@media (min-width:960px){
.deck{grid-template-columns:minmax(0,1fr) 290px;align-items:start}
.rail{position:sticky;top:134px}
footer{grid-template-columns:1.5fr 1fr 1.2fr 1fr}
}
@media (max-width:719px){
body{font-size:17px}
.hero{padding-top:22px;min-height:0}
.hero-fig{min-height:40vh}
.brand{letter-spacing:.12em}
.contact{padding:10px 12px}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
.reveal{opacity:1;transform:none;transition:none}
.chip{animation:none}
.hero-fig{transform:none !important}
}

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