@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@400;700&family=Patrick+Hand&display=swap');

*,*::before,*::after{box-sizing:border-box}

:root{
--lime:#87ff71;
--sun:#ffce5c;
--ink:#192617;
--paper:#f4ffe8;
--glass:rgba(255,255,255,.62);
--line:3px solid #192617;
--shadow:6px 6px 0 #192617;
--r:4px;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
margin:0;
font-family:'Patrick Hand','Kalam',"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
font-size:17px;
line-height:1.72;
color:var(--ink);
background-color:var(--paper);
background-image:radial-gradient(rgba(25,38,23,.16) 1.2px,transparent 1.2px);
background-size:22px 22px;
overflow-x:hidden;
}

img{max-width:100%;height:auto}
a{color:inherit}

/* ---------- 顶栏 ---------- */
.masthead{
position:sticky;
top:0;
z-index:60;
background-color:var(--lime);
border-bottom:4px solid var(--ink);
background-image:repeating-linear-gradient(45deg,rgba(25,38,23,.10) 0 8px,transparent 8px 16px);
}

.bar{
max-width:1140px;
margin:0 auto;
padding:10px 14px;
display:grid;
grid-template-columns:auto 1fr auto;
align-items:center;
gap:10px;
}

.brand{
justify-self:center;
display:inline-flex;
align-items:center;
min-height:44px;
padding:4px 14px;
font-size:21px;
font-weight:700;
letter-spacing:1px;
text-decoration:none;
color:var(--ink);
background:var(--sun);
border:var(--line);
border-radius:var(--r);
box-shadow:4px 4px 0 var(--ink);
transform:rotate(-2deg);
}

.ping{
justify-self:end;
display:inline-flex;
align-items:center;
min-height:44px;
padding:6px 12px;
font-size:16px;
text-decoration:none;
color:var(--ink);
background:#fff;
border:var(--line);
border-radius:var(--r);
box-shadow:3px 3px 0 var(--ink);
transform:rotate(1.5deg);
}

.ping:hover{background:var(--sun)}

/* ---------- 抽屉 ---------- */
.drawer{justify-self:start}
.drawer summary{
list-style:none;
position:relative;
z-index:90;
cursor:pointer;
display:inline-flex;
align-items:center;
gap:8px;
min-height:44px;
padding:8px 13px;
font-size:16px;
font-style:normal;
background:#fff;
border:var(--line);
border-radius:var(--r);
box-shadow:3px 3px 0 var(--ink);
}
.drawer summary::-webkit-details-marker{display:none}
.drawer summary em{font-style:normal}
.drawer[open] summary{background:var(--sun)}

.burger{
width:20px;
height:14px;
display:inline-block;
background:linear-gradient(var(--ink) 0 3px,transparent 3px 5.5px,var(--ink) 5.5px 8.5px,transparent 8.5px 11px,var(--ink) 11px 14px);
}

.drawer-panel{
position:fixed;
inset:0;
z-index:80;
padding:96px 20px 44px;
overflow-y:auto;
background-color:var(--ink);
background-image:repeating-linear-gradient(-45deg,rgba(135,255,113,.15) 0 10px,transparent 10px 20px);
}

.drawer-brand{
max-width:520px;
margin:0 auto 22px;
text-align:center;
font-size:22px;
color:var(--sun);
letter-spacing:2px;
}

.drawer-list{
list-style:none;
margin:0 auto;
padding:0;
max-width:520px;
display:grid;
gap:10px;
}

.drawer-list a{
display:flex;
align-items:center;
min-height:50px;
padding:12px 16px;
font-size:19px;
text-decoration:none;
color:var(--lime);
border:3px dashed var(--lime);
border-radius:var(--r);
background:rgba(255,255,255,.06);
}

.drawer-list a:hover,.drawer-list a:focus-visible{background:var(--lime);color:var(--ink);transform:rotate(-1deg)}

/* ---------- 锚点条 ---------- */
.rail{
border-top:3px solid var(--ink);
background-color:var(--sun);
background-image:repeating-linear-gradient(90deg,rgba(25,38,23,.14) 0 2px,transparent 2px 12px);
overflow-x:auto;
overflow-y:hidden;
}

.rail-list{
display:flex;
gap:8px;
width:max-content;
min-width:100%;
margin:0;
padding:8px 14px;
list-style:none;
}

.rail-list a{
display:inline-flex;
align-items:center;
min-height:40px;
padding:6px 12px;
font-size:16px;
white-space:nowrap;
text-decoration:none;
color:var(--ink);
background:var(--paper);
border:2px solid var(--ink);
border-radius:var(--r);
box-shadow:2px 2px 0 var(--ink);
}

.rail-list li:nth-child(odd) a{transform:rotate(-1.6deg)}
.rail-list li:nth-child(even) a{transform:rotate(1.6deg)}
.rail-list a:hover{background:var(--lime);transform:rotate(0) translateY(-2px)}

/* ---------- 头图 ---------- */
.hero{
position:relative;
overflow:hidden;
min-height:calc(100vh - 140px);
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
gap:26px;
padding:44px 18px 56px;
text-align:center;
border-bottom:4px solid var(--ink);
background:linear-gradient(168deg,var(--lime) 0%,var(--paper) 58%,var(--sun) 100%);
}

.blob{position:absolute;pointer-events:none;mix-blend-mode:multiply;opacity:.8}
.blob-a{width:180px;height:180px;left:-58px;top:14%;background:var(--sun);border-radius:50%}
.blob-b{width:160px;height:160px;right:-46px;bottom:10%;background:var(--lime);clip-path:polygon(50% 0,100% 100%,0 100%)}
.blob-c{
width:120px;height:56px;
right:8%;top:9%;
background:repeating-linear-gradient(90deg,var(--ink) 0 6px,transparent 6px 14px);
clip-path:polygon(0 40%,100% 0,100% 42%,0 82%);
opacity:.35;
}

.hero-copy{position:relative;z-index:2;max-width:760px}

.badge{
display:inline-block;
padding:6px 14px;
font-size:16px;
background:#fff;
border:var(--line);
border-radius:var(--r);
box-shadow:4px 4px 0 var(--ink);
transform:rotate(-3deg);
}

.hero h1{
margin:20px 0 16px;
font-size:clamp(2rem,7vw,3.9rem);
line-height:1.16;
letter-spacing:-.5px;
text-shadow:4px 4px 0 var(--sun);
}

.hero-desc{
max-width:620px;
margin:0 auto;
padding:10px 16px;
font-size:18px;
background:var(--glass);
backdrop-filter:blur(8px);
border:var(--line);
border-radius:var(--r);
box-shadow:5px 5px 0 rgba(25,38,23,.9);
}

.hero-art-wrap{
position:relative;
z-index:2;
width:min(680px,94%);
overflow:hidden;
background:#fff;
border:4px solid var(--ink);
border-radius:var(--r);
box-shadow:10px 10px 0 var(--ink);
}

.hero-art{display:block;width:100%;height:auto}

/* ---------- 主体 ---------- */
.page{
max-width:1140px;
margin:0 auto;
padding:34px 16px 62px;
display:grid;
grid-template-columns:236px minmax(0,1fr);
gap:26px;
align-items:start;
}

.side{
position:sticky;
top:150px;
padding:14px;
background:var(--glass);
backdrop-filter:blur(7px);
border:var(--line);
border-radius:var(--r);
box-shadow:var(--shadow);
}

.side-title{
display:flex;
align-items:center;
margin:0 0 10px;
font-size:18px;
line-height:1.3;
}

.side-title span{
display:inline-block;
padding:2px 10px;
background:var(--lime);
border:2px solid var(--ink);
border-radius:var(--r);
transform:rotate(-2deg);
}

.side-list{
margin:0;
padding:0;
list-style:none;
display:grid;
gap:5px;
}

.side-list a{
display:flex;
align-items:center;
gap:8px;
min-height:40px;
padding:6px 8px;
font-size:16px;
text-decoration:none;
border:2px dashed transparent;
border-radius:var(--r);
}

.side-list a:hover{background:var(--sun);border-color:var(--ink)}
.side-list b{
flex:0 0 auto;
min-width:22px;
font-weight:400;
font-size:14px;
text-align:center;
background:var(--sun);
border:2px solid var(--ink);
border-radius:var(--r);
line-height:1.5;
}

.prose{
min-width:0;
padding:6px 22px 28px;
background:var(--glass);
backdrop-filter:blur(7px);
border:var(--line);
border-radius:var(--r);
box-shadow:var(--shadow);
}

.prose article{
padding:24px 0;
border-top:3px dotted rgba(25,38,23,.32);
scroll-margin-top:158px;
}

.prose article:first-child{border-top:0}

.prose h2{
margin:.45em 0 .5em;
font-size:clamp(1.4rem,3.4vw,1.85rem);
line-height:1.32;
}

.prose h3{
margin:1.1em 0 .45em;
font-size:1.2rem;
line-height:1.4;
}

.prose h2>span,.prose h3>span{
display:inline;
background:linear-gradient(transparent 64%,var(--sun) 64%);
padding:0 2px;
}

.prose p{margin:0 0 1em}

.prose a{
color:#14603a;
text-decoration:underline;
text-decoration-style:wavy;
text-decoration-color:var(--lime);
text-decoration-thickness:2px;
text-underline-offset:3px;
}

.prose a:hover{background:var(--sun);color:var(--ink)}

.prose ul,.prose ol{padding-left:1.35em;margin:0 0 1em}
.prose li{margin:0 0 .35em}

.prose blockquote{
margin:1.1em 0;
padding:10px 16px;
background:rgba(255,206,92,.3);
border-left:6px solid var(--sun);
border-radius:var(--r);
}

.prose blockquote p:last-child{margin:0}

.prose img{
display:block;
margin:1.1em 0;
border:3px solid var(--ink);
border-radius:var(--r);
}

.prose code{
padding:1px 5px;
font-size:.94em;
background:var(--sun);
border-radius:var(--r);
}

.prose hr{
height:0;
margin:1.6em 0;
border:0;
border-top:3px dashed rgba(25,38,23,.35);
}

/* ---------- 页脚 ---------- */
.foot{
margin-top:24px;
color:var(--paper);
background-color:var(--ink);
border-top:6px solid var(--lime);
background-image:repeating-linear-gradient(135deg,rgba(135,255,113,.10) 0 12px,transparent 12px 24px);
}

.foot-cta{
max-width:1140px;
margin:0 auto;
padding:40px 16px 10px;
text-align:center;
}

.foot-cta h2{
margin:0 0 18px;
font-size:clamp(1.7rem,5vw,2.5rem);
color:var(--sun);
}

.foot-cta h2 span{
display:inline-block;
padding-bottom:4px;
border-bottom:4px dashed var(--lime);
transform:rotate(-2deg);
}

.foot-go{
display:inline-flex;
align-items:center;
justify-content:center;
min-height:50px;
padding:10px 28px;
font-size:18px;
text-decoration:none;
color:var(--ink);
background:var(--lime);
border:3px solid var(--paper);
border-radius:var(--r);
box-shadow:5px 5px 0 var(--sun);
}

.foot-go:hover{background:var(--sun);box-shadow:5px 5px 0 var(--lime)}

.foot-cols{
max-width:1140px;
margin:0 auto;
padding:30px 16px;
display:grid;
grid-template-columns:repeat(3,1fr);
gap:20px;
}

.foot-cols dl{
margin:0;
padding:14px;
background:rgba(255,255,255,.05);
border:2px dashed var(--lime);
border-radius:var(--r);
}

.foot-cols dt{
margin:0 0 6px;
font-size:18px;
color:var(--sun);
}

.foot-cols dd{
margin:0 0 2px;
font-size:16px;
color:#d7ecc9;
}

.foot-cols a{
display:inline-flex;
align-items:center;
min-height:40px;
text-decoration:none;
color:var(--paper);
}

.foot-cols a:hover{color:var(--lime);text-decoration:underline wavy}

.foot-base{
padding:14px 16px 28px;
text-align:center;
border-top:2px dashed rgba(135,255,113,.45);
}

.foot-base p{margin:0;font-size:16px;color:#c9e2bb}

/* ---------- 动效 ---------- */
.reveal{transition:opacity .55s ease,transform .55s ease}
html.js .reveal{opacity:0;transform:translateY(20px)}
html.js .reveal.in{opacity:1;transform:none}

/* ---------- 自适应 ---------- */
@media (max-width:880px){
.page{grid-template-columns:minmax(0,1fr);padding-top:24px;gap:18px}
.side{position:static;top:auto}
.side-list{grid-template-columns:1fr 1fr;gap:4px}
.side-list a{font-size:15px;min-height:42px}
.prose{padding:4px 16px 24px}
.prose article{scroll-margin-top:150px}
.hero{min-height:auto;padding:34px 16px 44px;gap:20px}
.blob-c{display:none}
.foot-cols{grid-template-columns:1fr;gap:14px}
}

@media (max-width:430px){
body{font-size:16px}
.bar{gap:8px;padding:8px 10px}
.brand{font-size:17px;padding:4px 10px;letter-spacing:0}
.ping{padding:6px 10px;font-size:15px}
.drawer summary{padding:8px 10px;font-size:15px}
.hero-desc{font-size:16px}
}

@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
html.js .reveal{opacity:1;transform:none;transition:none}
.rail-list li a,.brand,.ping,.side-title span,.foot-cta h2 span{transform:none}
}

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