@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root{
--ink:#192617;
--neon:#87ff71;
--sun:#ffce5c;
--paper:#f5f3e6;
--card:#fffdf5;
--r:28px;
--side:264px;
--f:"Space Grotesk","DM Sans",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
margin:0;
font-family:var(--f);
font-size:17px;
line-height:1.7;
color:var(--ink);
background-color:var(--paper);
background-image:radial-gradient(rgba(25,38,23,.15) 1px,transparent 1px);
background-size:24px 24px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
[hidden]{display:none!important}
.skip{position:absolute;left:-9999px;top:10px;z-index:99;background:var(--ink);color:var(--neon);padding:12px 18px;border-radius:999px;text-decoration:none}
.skip:focus{left:10px}

/* 左侧固定竖排导航 */
.side{
position:fixed;
inset:0 auto 0 0;
width:var(--side);
display:flex;
flex-direction:column;
gap:16px;
padding:24px 20px 20px;
background:var(--ink);
color:var(--paper);
border-right:4px solid var(--neon);
overflow-y:auto;
z-index:20;
}
.brand{
display:flex;
align-items:center;
gap:10px;
min-height:44px;
padding:6px 4px;
text-decoration:none;
color:var(--neon);
font-size:20px;
font-weight:700;
letter-spacing:.01em;
transform:rotate(-2deg);
}
.brand-ico{width:40px;height:40px;border-radius:12px;object-fit:cover;background:var(--sun);flex:0 0 auto}
.brand-name{border-bottom:3px dotted var(--neon);padding-bottom:2px}
.find{display:block;margin:0}
.find input{
width:100%;
min-height:44px;
padding:10px 16px;
font:inherit;
font-size:16px;
color:var(--paper);
background:rgba(135,255,113,.08);
border:2px dashed rgba(135,255,113,.55);
border-radius:999px;
}
.find input::placeholder{color:rgba(245,243,230,.62)}
.find input:focus{outline:3px solid var(--sun);outline-offset:2px;background:rgba(135,255,113,.16)}
.pills p{display:flex;flex-direction:column;gap:10px;margin:0}
.pills a{
display:flex;
align-items:center;
min-height:44px;
padding:10px 18px;
font-size:16px;
font-weight:500;
text-decoration:none;
color:var(--paper);
background:rgba(135,255,113,.1);
border:2px solid rgba(135,255,113,.42);
border-radius:999px;
transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.pills a:nth-child(even){transform:rotate(-1.4deg)}
.pills a:hover,.pills a:focus-visible,.pills a.on{
background:var(--neon);
color:var(--ink);
border-color:var(--neon);
transform:rotate(0deg) translateX(5px);
}
.side-mark{
margin:0;
flex:1 1 auto;
min-height:60px;
border-radius:var(--r);
border:3px dotted rgba(255,206,92,.5);
background-image:repeating-linear-gradient(45deg,rgba(255,206,92,.28) 0 6px,transparent 6px 16px);
}

/* 主体 */
main{margin-left:var(--side);display:block}

.hero{
position:relative;
min-height:100vh;
display:grid;
grid-template-columns:1.05fr .95fr;
align-items:center;
gap:34px;
padding:104px 5vw 96px;
background:var(--sun);
clip-path:polygon(0 0,100% 0,100% 92%,0 100%);
overflow:hidden;
}
.hero::before{
content:"";
position:absolute;
inset:-22% -12% auto -12%;
height:150%;
background:repeating-linear-gradient(45deg,rgba(25,38,23,.13) 0 13px,transparent 13px 33px);
mix-blend-mode:multiply;
transform:rotate(-3deg);
pointer-events:none;
}
.hero-copy{position:relative;text-align:right;order:2;z-index:2}
.tag{margin:0 0 18px}
.tag>span{
display:inline-block;
padding:7px 18px;
font-size:16px;
font-weight:700;
letter-spacing:.06em;
color:var(--neon);
background:var(--ink);
border-radius:999px;
transform:rotate(2deg);
}
.hero h1{
margin:0 0 20px;
font-size:clamp(2.1rem,5.2vw,4.4rem);
line-height:1.03;
letter-spacing:-.025em;
font-weight:700;
}
.lede{
margin:0 0 26px auto;
max-width:32ch;
font-size:18px;
line-height:1.65;
}
.hero-cta{margin:0}
.btn{
display:inline-flex;
align-items:center;
min-height:48px;
padding:12px 30px;
font-size:16px;
font-weight:700;
text-decoration:none;
color:var(--paper);
background:var(--ink);
border:3px solid var(--ink);
border-radius:999px;
transform:rotate(-1.5deg);
transition:transform .2s ease,background .2s ease,color .2s ease;
}
.btn:hover,.btn:focus-visible{background:var(--neon);color:var(--ink);transform:rotate(0) translateY(-3px)}
.hero-art{
position:relative;
order:1;
margin:0;
z-index:1;
height:min(64vh,540px);
border:4px solid var(--ink);
border-radius:var(--r);
background:
repeating-linear-gradient(-45deg,rgba(25,38,23,.18) 0 10px,transparent 10px 26px),
var(--neon);
clip-path:polygon(0 6%,100% 0,100% 94%,0 100%);
transform:rotate(-2deg);
overflow:hidden;
box-shadow:14px 14px 0 rgba(25,38,23,.85);
}
.hero-art::after{
content:"";
position:absolute;
right:-40px;
bottom:-40px;
width:150px;
height:150px;
border:8px dotted var(--ink);
border-radius:50%;
mix-blend-mode:multiply;
pointer-events:none;
}
.hero-img{width:100%;height:100%;object-fit:cover}

/* 正文 + 右侧栏 */
.board{
display:grid;
grid-template-columns:minmax(0,1fr) 288px;
gap:36px;
max-width:1180px;
margin:0 auto;
padding:68px 5vw 84px;
}
.prose{min-width:0;order:1}
.prose>article{
margin:0 0 34px;
padding:30px 26px 34px;
background:var(--card);
border:2.5px solid var(--ink);
border-bottom:10px solid var(--neon);
border-radius:var(--r);
box-shadow:9px 9px 0 rgba(25,38,23,.88);
scroll-margin-top:18px;
transition:transform .2s ease,box-shadow .2s ease;
}
.prose>article:hover{transform:translate(-3px,-3px);box-shadow:13px 13px 0 rgba(25,38,23,.9)}
.prose>article:nth-child(3n+2){border-bottom-color:var(--sun)}
.prose>article:nth-child(3n+3){border-bottom-color:var(--ink)}
.prose>article>:first-child{margin-top:0}
.prose>article>:last-child{margin-bottom:0}
.prose h2,.prose h3{line-height:1.25;letter-spacing:-.01em;margin:1.5em 0 .55em}
.prose h2{font-size:clamp(1.35rem,2.4vw,1.75rem)}
.prose h3{font-size:1.15rem}
.prose h2>span,.prose h3>span{position:relative;display:inline-block;z-index:0}
.prose h2>span::after{
content:"";
position:absolute;
left:-5px;
right:-5px;
bottom:2px;
height:.5em;
background:var(--sun);
z-index:-1;
transform:rotate(-1deg);
}
.prose p,.prose li{font-size:17px;line-height:1.85}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.35em 0}
.prose a{color:var(--ink);text-decoration:none;border-bottom:3px solid var(--neon);font-weight:500}
.prose a:hover{border-bottom-color:var(--ink);background:rgba(135,255,113,.35)}
.prose strong{background:linear-gradient(transparent 62%,var(--sun) 62%);font-weight:700}
.prose blockquote{
margin:1.2em 0;
padding:14px 20px;
border-left:8px solid var(--neon);
background:rgba(135,255,113,.14);
border-radius:0 var(--r) var(--r) 0;
font-size:16.5px;
}
.prose img,.prose figure img{border-radius:20px;border:2.5px solid var(--ink)}
.prose figure{margin:1.4em 0}
.prose table{width:100%;border-collapse:collapse;font-size:16px}
.prose th,.prose td{border:2px solid var(--ink);padding:9px 12px;text-align:left}
.prose th{background:var(--sun)}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:15px;background:rgba(25,38,23,.09);padding:1px 6px;border-radius:8px}
.prose hr{border:0;border-top:3px dotted var(--ink);margin:2em 0}

.rail{
order:2;
align-self:start;
position:sticky;
top:24px;
display:flex;
flex-direction:column;
gap:14px;
}
.rail h2{margin:0;font-size:16px;line-height:1.3;letter-spacing:.06em}
.rail h2>span{
display:inline-block;
padding:8px 16px;
color:var(--neon);
background:var(--ink);
border-radius:999px;
transform:rotate(-2deg);
}
.rail-list{margin:0;display:flex;flex-direction:column;gap:8px}
.rail-list a{
display:flex;
align-items:center;
min-height:44px;
padding:8px 14px;
font-size:16px;
text-decoration:none;
color:var(--ink);
background:var(--card);
border:2px dotted var(--ink);
border-radius:16px;
transition:background .18s ease,transform .18s ease;
}
.rail-list a:hover,.rail-list a:focus-visible{background:var(--neon);transform:translateX(4px)}
.rail .totop{
display:inline-block;
padding:0;
background:var(--sun);
border:2.5px solid var(--ink);
border-radius:999px;
transform:rotate(2deg);
}
.rail .totop a{display:block;min-height:44px;padding:10px 20px;line-height:22px;text-decoration:none;font-weight:700}

/* 页脚 */
.foot{
margin-left:var(--side);
display:grid;
grid-template-columns:1.5fr 1fr 1fr 1fr;
gap:16px;
padding:44px 5vw 26px;
background:var(--ink);
color:var(--paper);
border-top:6px solid var(--neon);
}
.foot p{margin:0;font-size:16px;line-height:1.5}
.foot-brand{display:flex;align-items:center;gap:10px;color:var(--neon);font-weight:700}
.foot p a{
display:block;
min-height:44px;
padding:11px 0;
font-size:16px;
color:rgba(245,243,230,.86);
text-decoration:none;
border-bottom:2px dotted transparent;
}
.foot p a:hover,.foot p a:focus-visible{color:var(--neon);border-bottom-color:var(--neon)}
.foot small{
grid-column:1/-1;
margin-top:10px;
padding-top:16px;
font-size:16px;
color:rgba(245,243,230,.62);
border-top:2px dotted rgba(245,243,230,.28);
}

/* 入场与滚动显现 */
@media (prefers-reduced-motion:no-preference){
.hero-copy{animation:rise .55s cubic-bezier(.2,.7,.3,1) both}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
}
.jsr [data-reveal]{
opacity:0;
transform:translateY(26px);
transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.3,1);
}
.jsr [data-reveal].in{opacity:1;transform:none}
.jsr .hero-art[data-reveal]{transform:translateY(26px) rotate(-2deg)}
.jsr .hero-art[data-reveal].in{transform:rotate(-2deg)}

@media (max-width:1024px){
.board{grid-template-columns:minmax(0,1fr) 250px;gap:26px}
}

@media (max-width:900px){
.side{
position:static;
inset:auto;
width:auto;
gap:12px;
padding:16px 16px 18px;
border-right:0;
border-bottom:4px solid var(--neon);
overflow:visible;
}
main,.foot{margin-left:0}
.pills{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.pills::-webkit-scrollbar{display:none}
.pills p{flex-direction:row;flex-wrap:nowrap;gap:8px;padding-bottom:4px}
.pills a{white-space:nowrap;transform:none}
.side-mark{display:none}
.hero{
grid-template-columns:1fr;
min-height:0;
gap:26px;
padding:34px 18px 64px;
clip-path:polygon(0 0,100% 0,100% 96%,0 100%);
}
.hero-copy{order:1;text-align:left}
.hero-art{order:2;height:260px;transform:rotate(-1.5deg);box-shadow:9px 9px 0 rgba(25,38,23,.85)}
.jsr .hero-art[data-reveal],.jsr .hero-art[data-reveal].in{transform:rotate(-1.5deg)}
.lede{margin-left:0;font-size:17px}
.board{grid-template-columns:1fr;padding:38px 18px 56px;gap:28px}
.prose{order:1}
.rail{order:2;position:static}
.rail .totop{transform:none}
.prose>article{padding:24px 18px 28px;border-radius:22px;box-shadow:6px 6px 0 rgba(25,38,23,.85)}
.prose>article:hover{transform:none;box-shadow:6px 6px 0 rgba(25,38,23,.85)}
.foot{grid-template-columns:1fr 1fr;padding:32px 18px 22px}
}

@media (max-width:420px){
.hero h1{font-size:2.05rem}
.tag>span{font-size:16px}
}

@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*{animation:none!important;transition:none!important}
.jsr [data-reveal]{opacity:1!important;transform:none!important}
}

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