/* ================= 爱早学 · 涂鸦街头风 ================= */
:root{
  --ink:#111116;
  --paper:#fbfaf2;
  --pink:#ff2e88;
  --cyan:#19e3ff;
  --yellow:#ffe01a;
  --lime:#a6ff3f;
  --orange:#ff8a2a;
  --purple:#b976ff;
  --red:#ff4040;
  --blue:#3f8cff;
  --mint:#4ef0c0;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Segoe UI",sans-serif;
  color:#eceaf2;
  background-color:#15151b;
  background-image:
    radial-gradient(circle at 10% 12%, rgba(255,46,136,.14), transparent 25%),
    radial-gradient(circle at 90% 6%, rgba(25,227,255,.11), transparent 22%),
    radial-gradient(circle at 82% 88%, rgba(185,118,255,.10), transparent 24%),
    radial-gradient(circle at 6% 80%, rgba(255,224,26,.07), transparent 20%),
    radial-gradient(rgba(255,255,255,.05) 1px, transparent 1.6px);
  background-size:auto,auto,auto,auto,16px 16px;
  line-height:1.9;
  overflow-x:hidden;
}
a{color:var(--cyan);text-decoration:none;transition:color .15s ease,transform .15s ease,box-shadow .18s ease}
a:hover{color:var(--yellow)}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(14,14,18,.94);border-bottom:3px solid var(--ink);box-shadow:0 4px 0 rgba(255,46,136,.35),0 10px 30px rgba(0,0,0,.5);backdrop-filter:blur(6px)}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand .logo{height:40px;width:auto}
.brand-name{font-weight:900;font-size:1.35rem;letter-spacing:.12em;color:#fff;text-shadow:3px 3px 0 var(--pink)}
.head-nav{display:flex;gap:8px;flex-wrap:wrap}
.head-nav a{background:#20202a;border:2px solid #000;padding:4px 14px;border-radius:999px;color:#fff;font-weight:700;font-size:.85rem;letter-spacing:.08em}
.head-nav a:hover{background:var(--pink);color:#111;transform:rotate(-2deg)}

/* ---------- 胶带 / 贴纸 / 徽章 ---------- */
.tape{display:inline-block;background:linear-gradient(180deg,rgba(255,224,26,.95),rgba(255,210,0,.95));color:#141414;font-weight:900;letter-spacing:.4em;padding:.4em 1.2em .4em 1.9em;box-shadow:0 4px 10px rgba(0,0,0,.45);transform:rotate(-2deg);font-size:.8rem}
.sticker{background:var(--paper);color:#14141a;border:3px solid #000;border-radius:16px;box-shadow:8px 8px 0 #000}
.tilt-l{transform:rotate(-1.1deg)}
.tilt-r{transform:rotate(1.2deg)}
.badge{display:inline-block;background:var(--c,var(--pink));color:#111;font-weight:900;font-size:.78rem;padding:2px 12px;border:2px solid #000;border-radius:999px;letter-spacing:.1em}
.badge.ghost{background:transparent;color:#565664;border-style:dashed;border-color:#9a9aa6}

/* ---------- 首页 hero ---------- */
.hero{position:relative;text-align:center;padding:64px 20px 52px;overflow:hidden}
.hero::before{content:"";position:absolute;left:-40px;top:-30px;width:10px;height:10px;border-radius:50%;background:var(--pink);opacity:.5;filter:blur(1px);
  box-shadow:60px 40px 0 var(--cyan),640px 90px 0 var(--yellow),300px 30px 0 var(--purple),900px 260px 0 var(--pink),120px 320px 0 var(--lime),720px 420px 0 var(--cyan),40px 220px 0 var(--orange),980px 60px 0 var(--lime),520px 500px 0 var(--pink),200px 480px 0 var(--yellow)}
.hero>*{position:relative}
.hero .tape{margin-bottom:26px}
.hero-logo{height:88px;width:auto;margin:6px auto 18px}
.hero-title{font-size:clamp(2.5rem,8vw,5.4rem);font-weight:900;letter-spacing:.06em;color:#fff;text-shadow:4px 4px 0 var(--pink),9px 9px 0 rgba(0,0,0,.6)}
.hero-title .drip{position:relative;display:inline-block}
.hero-title .drip::after{content:"";position:absolute;left:48%;bottom:-10px;width:.13em;height:.35em;background:var(--pink);border-radius:0 0 40% 40%/0 0 100% 100%;animation:drip 3.2s ease-in-out infinite}
@keyframes drip{0%,100%{height:.26em;opacity:.9}55%{height:.62em;opacity:.55}}
.hero-sub{margin-top:22px;font-size:1.05rem;letter-spacing:.12em;color:#cfcdde}
.marker{background:linear-gradient(transparent 58%,var(--yellow) 58%,var(--yellow) 94%,transparent 94%);padding:0 .14em;color:#fff;font-weight:900}
.marker.p{background:linear-gradient(transparent 58%,var(--pink) 58%,var(--pink) 94%,transparent 94%)}

/* ---------- 滚动横幅 ---------- */
.ticker{background:#0d0d12;border-top:3px solid #000;border-bottom:3px solid #000;overflow:hidden}
.ticker-in{display:inline-flex;white-space:nowrap;animation:roll 28s linear infinite;will-change:transform}
.ticker-in span{padding:10px 0;color:#fff;font-weight:700;letter-spacing:.18em;font-size:.9rem}
.ticker-in i{font-style:normal;color:var(--pink);padding:10px 24px}
@keyframes roll{to{transform:translateX(-50%)}}

/* ---------- 区块标题 ---------- */
.sec-head{text-align:center;margin:52px 0 8px}
.sec-title{display:inline-block;font-size:clamp(1.5rem,4vw,2rem);font-weight:900;color:#fff;letter-spacing:.12em;transform:rotate(-1deg);text-shadow:3px 3px 0 var(--pink);margin:8px 0 10px}
.sec-sub{color:#9d9bac;font-size:.9rem;letter-spacing:.2em}

/* ---------- 栏目卡片 ---------- */
.col-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px 26px;padding:24px 0 10px}
.col-card{position:relative;padding:24px 22px 18px;transition:transform .18s ease,box-shadow .18s ease}
.col-card:hover{transform:translate(-3px,-3px) rotate(0deg) !important;box-shadow:11px 11px 0 var(--c)}
.col-card .no{position:absolute;top:-18px;right:12px;font-family:Impact,"Arial Black","Microsoft YaHei",sans-serif;font-size:2.6rem;line-height:1;color:var(--c);-webkit-text-stroke:2px #000;text-shadow:3px 3px 0 rgba(0,0,0,.25);transform:rotate(6deg)}
.col-card h2{font-size:1.3rem;letter-spacing:.12em;margin:2px 0 10px;color:#14141a}
.col-card p{color:#3c3c46;font-size:.9rem;line-height:1.8}
.col-card .go{display:inline-block;margin-top:13px;background:#14141a;color:var(--yellow);border:2px solid #000;padding:3px 14px;border-radius:999px;font-weight:900;font-size:.8rem;letter-spacing:.16em}
.col-card .go:hover{background:var(--c);color:#111;transform:rotate(-2deg)}

/* ---------- 关于 ---------- */
.about{max-width:820px;margin:20px auto 10px;padding:34px 36px 26px;color:#1c1c22}
.about h2{font-size:1.4rem;letter-spacing:.14em;margin-bottom:12px}
.about p{margin:8px 0;color:#26262e}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:.82rem;color:#9a97a8;padding:18px 20px 0;max-width:1080px;margin:0 auto}
.crumbs i{font-style:normal;margin:0 8px;color:var(--pink)}
.crumbs span{color:var(--yellow)}

/* ---------- 栏目落地页 ---------- */
.col-hero{margin:30px 0 6px;padding:42px 26px 34px;text-align:center;position:relative;background:#0e0e14;border:3px solid #000;border-radius:18px;box-shadow:8px 8px 0 var(--c);overflow:hidden}
.col-hero::before{content:"";position:absolute;left:-30px;top:-30px;width:8px;height:8px;border-radius:50%;background:var(--c);opacity:.5;
  box-shadow:80px 30px 0 var(--c),520px 60px 0 #fff,300px 20px 0 var(--yellow),640px 220px 0 var(--c),150px 280px 0 var(--pink),560px 380px 0 var(--cyan)}
.col-hero>*{position:relative}
.col-hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:900;color:#fff;letter-spacing:.16em;text-shadow:4px 4px 0 var(--c),8px 8px 0 rgba(0,0,0,.6);margin:18px 0 10px}
.col-hero .desc{color:#c9c7d6;max-width:620px;margin:0 auto}
.col-hero .count{margin-top:14px;color:#fff;font-weight:900;letter-spacing:.2em;font-size:.85rem}
.col-hero .count b{color:var(--yellow)}

/* ---------- 文章列表卡片 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px 22px;margin:28px 0 50px}
.post-card{display:block;padding:18px 18px 12px;position:relative;transition:transform .16s ease,box-shadow .16s ease}
.post-card:hover{transform:translate(-3px,-3px) rotate(0deg) !important;box-shadow:11px 11px 0 var(--c)}
.post-card .num{font-family:Impact,"Arial Black","Microsoft YaHei",sans-serif;font-size:1.7rem;line-height:1;color:var(--c);-webkit-text-stroke:1.5px #000}
.post-card h2{font-size:1.02rem;color:#14141a;margin:6px 0 8px;line-height:1.6;letter-spacing:.02em}
.post-card .date{font-size:.78rem;color:#77727e;border-top:2px dashed #d8d6c8;padding-top:8px;font-weight:600}

/* ---------- 文章页 ---------- */
.paper{position:relative;max-width:860px;margin:36px auto 0;padding:48px 48px 30px;color:#1c1c22}
.paper::before{content:"";position:absolute;top:-13px;left:50%;transform:translateX(-50%) rotate(-2deg);width:150px;height:26px;background:rgba(255,224,26,.92);box-shadow:0 3px 8px rgba(0,0,0,.35)}
.badge-row{display:flex;gap:8px;flex-wrap:wrap}
.post-title{font-size:clamp(1.5rem,3.6vw,2.15rem);font-weight:900;letter-spacing:.03em;line-height:1.55;margin:12px 0 14px;color:#111118;display:inline;background:linear-gradient(transparent 64%,var(--yellow) 64%,var(--yellow) 96%,transparent 96%)}
.meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.82rem;color:#6b6b78;border-bottom:3px dashed #d8d6c8;padding-bottom:14px;margin-bottom:22px;font-weight:600}
.lead{font-size:1.1rem;font-weight:700;border-left:8px solid var(--lime);background:#f4f7e8;padding:12px 16px;border-radius:0 10px 10px 0;color:#22222a;margin-bottom:6px}
.paper h2{display:flex;align-items:center;gap:10px;font-size:1.22rem;letter-spacing:.1em;margin:32px 0 10px;color:#14141a}
.paper h2::before{content:"";width:15px;height:15px;background:var(--c,var(--pink));border:3px solid #000;border-radius:4px;transform:rotate(8deg);flex:none}
.paper p{margin:10px 0;color:#26262e}
.paper ol,.paper ul{margin:12px 0 12px 6px;padding-left:22px}
.paper li{margin:6px 0;color:#26262e}
.steps{background:#f0f4ff;border:2px dashed #7d9bff;border-radius:12px;padding:16px 22px;margin:20px 0}
.steps h3,.qa h3{letter-spacing:.14em;margin-bottom:6px;color:#14141a}
.qa{background:#fff3f8;border:2px dashed var(--pink);border-radius:12px;padding:16px 22px;margin:20px 0}
.qa .q{font-weight:900;color:#c2175f;display:block}
.qa .a{margin:4px 0 12px;color:#26262e}
.qa .a:last-child{margin-bottom:0}
.tips{background:var(--yellow);border:3px solid #000;border-radius:14px;padding:18px 24px;margin:28px 0 18px;box-shadow:6px 6px 0 rgba(0,0,0,.85);transform:rotate(-.5deg)}
.tips h3{letter-spacing:.18em;font-size:1.02rem;margin-bottom:8px;color:#141414}
.tips ul{list-style:none;padding:0;margin:0}
.tips li{padding-left:1.6em;position:relative;font-weight:700;color:#1c1c10;margin:5px 0}
.tips li::before{content:"▸";position:absolute;left:.3em;color:#c2410c;font-weight:900}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 6px}
.tags span{border:2px solid #000;background:#fff;border-radius:999px;padding:1px 12px;font-size:.75rem;font-weight:700;color:#33333d}
.related{border-top:3px dashed #d8d6c8;margin-top:14px;padding-top:14px}
.related h3{letter-spacing:.14em;font-size:1rem;margin-bottom:8px;color:#14141a}
.related a{display:block;color:#0b62c4;font-weight:700;padding:3px 0}
.related a:hover{color:var(--pink)}
.pager{max-width:860px;margin:24px auto 46px;display:flex;gap:12px;flex-wrap:wrap;justify-content:space-between}
.pager a{background:var(--paper);color:#14141a;border:3px solid #000;box-shadow:5px 5px 0 #000;border-radius:12px;padding:9px 16px;font-weight:800;font-size:.84rem}
.pager a:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--pink);color:#000}
.pager a.mid{background:#14141a;color:var(--yellow)}

/* ---------- 页脚 ---------- */
.site-foot{margin-top:34px;background:#0c0c11;border-top:3px solid #000;padding:28px 20px;text-align:center;color:#8b8a97;font-size:.85rem}
.site-foot a{color:var(--cyan)}
.site-foot a:hover{color:var(--yellow)}
.icp{margin-top:10px;letter-spacing:.05em}

/* ---------- 响应式 ---------- */
@media (max-width:680px){
  .paper{padding:38px 22px 24px}
  .pager{flex-direction:column}
  .pager a{width:100%;text-align:center}
  .head-in{flex-direction:column;gap:10px}
  .about{padding:30px 22px 20px}
}