/* ===================================================================
   空投猎人 (Airdrop Hunter) · 像素街机 HD-2D 设计系统
   Site 34 · zh-Hans
   位图字体只做 logo/标题/标签;正文用 Noto Sans SC 保长文可读
=================================================================== */

@font-face{
  font-family:'Press Start 2P';
  src:url('/assets/fonts/PressStart2P.woff2') format('woff2');
  font-display:swap;
}
@font-face{
  font-family:'Zpix';
  src:url('/assets/fonts/Zpix.woff2') format('woff2');
  font-display:swap;
}

:root{
  --bg0:#0a0a14;
  --bg1:#160d2b;
  --bg2:#1d1240;
  --panel:#120b26;
  --panel2:#0d0a1f;
  --ink:#eef0ff;
  --ink-dim:#c4c8ee;
  --muted:#9aa0c8;
  --faint:#6f74a0;
  --gold:#ffce3a;
  --gold-d:#b87a00;
  --magenta:#ff3e8f;
  --magenta-d:#8c1750;
  --cyan:#3ee8ff;
  --cyan-d:#1899ad;
  --green:#5dff9b;
  --green-d:#1d9a52;
  --line:#2c2660;
  --line-soft:#221c4a;
  --radius:8px;
  --maxw:1180px;
  --readw:760px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg0);
  color:var(--ink);
  font-family:'Noto Sans SC',system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
  position:relative;overflow-x:hidden;
  background-image:
    radial-gradient(1100px 600px at 78% -8%, rgba(255,62,143,.14), transparent 60%),
    radial-gradient(900px 520px at 10% 110%, rgba(62,232,255,.10), transparent 55%),
    linear-gradient(180deg,var(--bg1),var(--bg0) 70%);
  background-attachment:fixed;
}
/* CRT scanline overlay (decorative, very subtle) */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:1;
  background:repeating-linear-gradient(180deg, rgba(0,0,0,.16) 0 2px, transparent 2px 4px);
  mix-blend-mode:multiply;opacity:.45;
}
img,svg{max-width:100%;image-rendering:pixelated;image-rendering:crisp-edges}
img.photo{image-rendering:auto}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.pixel{font-family:'Press Start 2P','Zpix',monospace;letter-spacing:.5px;line-height:1.5}
.zpix{font-family:'Zpix','Press Start 2P','Noto Sans SC',sans-serif;letter-spacing:1px}
.skip-link{position:absolute;left:-999px;top:0;z-index:50;background:var(--gold);color:#000;padding:8px 14px}
.skip-link:focus{left:8px;top:8px}

/* stepped pixel bevel */
.bevel{border:3px solid #000;box-shadow:0 0 0 3px var(--line),0 8px 0 0 rgba(0,0,0,.55)}

/* ============ HUD nav ============ */
.hud{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:linear-gradient(180deg,#1a1138,#120a28);
  border-bottom:4px solid #000;
  box-shadow:0 4px 0 0 var(--magenta),0 5px 0 0 #000;
  padding:12px 22px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand:hover{text-decoration:none}
.coin{
  width:34px;height:34px;flex:none;display:grid;place-items:center;
  background:var(--gold);color:#5a3a00;border-radius:50%;
  box-shadow:inset 0 0 0 3px #ffe48a,0 3px 0 var(--gold-d);
  font-family:'Press Start 2P';font-size:13px;
}
.brand b{font-size:17px;line-height:1;color:var(--gold);text-shadow:2px 2px 0 #7a1d4a}
.brand small{display:block;font-family:'Press Start 2P';font-size:7px;color:var(--cyan);margin-top:5px;letter-spacing:1px}
.nav{display:flex;gap:6px;align-items:center}
.nav a{font-family:'Zpix','Noto Sans SC';font-size:15px;color:var(--ink);padding:8px 12px;border:2px solid transparent;border-radius:5px}
.nav a:hover{border-color:var(--cyan);color:var(--cyan);text-decoration:none}
.nav a[aria-current="page"]{border-color:var(--magenta);color:var(--magenta)}
.lv{font-family:'Press Start 2P';font-size:8px;color:#0a0a14;background:var(--green);padding:7px 9px;border-radius:4px;box-shadow:0 3px 0 var(--green-d)}
.navtoggle{display:none;background:none;border:2px solid var(--line);border-radius:5px;color:var(--ink);font-size:20px;padding:4px 10px;cursor:pointer}

/* ============ buttons / CTA ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:'Zpix','Noto Sans SC';font-weight:700;border:3px solid #000;border-radius:7px;cursor:pointer;text-decoration:none}
.btn:hover{text-decoration:none}
.btn-start{font-size:18px;color:#1a0010;background:linear-gradient(180deg,#ff6aa9,var(--magenta));padding:15px 22px;box-shadow:0 0 22px rgba(255,62,143,.5),0 7px 0 var(--magenta-d),0 8px 0 #000}
.btn-start:active{transform:translateY(4px);box-shadow:0 0 22px rgba(255,62,143,.5),0 3px 0 var(--magenta-d),0 4px 0 #000}
.btn-equip{font-size:15px;color:var(--ink);background:var(--panel2);border-color:var(--line);padding:13px 16px;display:flex;align-items:center;gap:10px}
.btn-equip:hover{border-color:var(--cyan)}
.btn-equip b{color:var(--cyan)}
.btn-equip small{display:block;color:var(--faint);font-size:11px;margin-top:3px;font-weight:400}
.btn-ghost{font-size:15px;color:var(--cyan);background:transparent;border-color:var(--cyan);padding:11px 18px}

/* ============ hero ============ */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:18px 40px;align-items:center;padding:54px 0 40px;
  grid-template-areas:"head art" "panel art" "lede art"}
.hero .htext{grid-area:head;align-self:end}
.hero .panel{grid-area:panel}
.hero .lede{grid-area:lede;align-self:start}
.hero .art{grid-area:art;align-self:center}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:'Press Start 2P';font-size:8px;color:var(--cyan);border:2px solid var(--cyan);border-radius:4px;padding:7px 10px;margin-bottom:20px;box-shadow:0 0 14px rgba(62,232,255,.3)}
h1.hero-h1{font-family:'Zpix','Noto Sans SC';font-size:46px;line-height:1.3;color:#fff;text-shadow:3px 3px 0 var(--magenta),6px 6px 0 rgba(0,0,0,.5)}
h1.hero-h1 .y{color:var(--gold);text-shadow:3px 3px 0 #7a1d4a}
.lede{margin-top:18px;font-size:16px;line-height:1.85;color:var(--muted);max-width:520px}

/* conversion panel = cheat-code screen */
.panel{margin-top:26px;background:var(--panel);border-radius:var(--radius);padding:20px 20px 16px;position:relative}
.panel .ptt{font-family:'Press Start 2P';font-size:9px;color:var(--green);margin-bottom:14px}
.code{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#06060d;border:3px dashed var(--gold);border-radius:6px;padding:12px 14px}
.code .lbl{font-size:12px;color:var(--muted)}
.code .val{font-family:'Press Start 2P';font-size:18px;color:var(--gold);text-shadow:0 0 10px rgba(255,206,58,.45);user-select:all}
.copy{font-family:'Zpix','Noto Sans SC';font-size:14px;cursor:pointer;color:#06060d;background:var(--cyan);border:0;border-radius:5px;padding:8px 14px;box-shadow:0 4px 0 var(--cyan-d);white-space:nowrap}
.copy:active{transform:translateY(3px);box-shadow:0 1px 0 var(--cyan-d)}
.copy.done{background:var(--green);box-shadow:0 4px 0 var(--green-d)}
.bonus{display:inline-flex;align-items:center;gap:8px;margin:14px 0 4px;font-size:14px;color:var(--gold);font-weight:700}
.bonus .pill{font-family:'Press Start 2P';font-size:9px;background:var(--magenta);color:#fff;padding:6px 8px;border-radius:4px;box-shadow:0 3px 0 var(--magenta-d)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.cta-row .btn-start{flex:1;min-width:210px}
.foot-note{font-size:11px;color:var(--faint);margin-top:10px;line-height:1.55}

/* hero art */
.art{position:relative;display:grid;place-items:center;min-height:360px}
.art img,.art svg{width:100%;max-width:420px;filter:drop-shadow(0 14px 26px rgba(0,0,0,.5))}
.chestlabel{position:absolute;bottom:6px;font-family:'Press Start 2P';font-size:8px;color:var(--cyan);text-shadow:0 0 8px rgba(62,232,255,.5)}

/* ============ section headings ============ */
.section{padding:46px 0}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:26px;flex-wrap:wrap}
.sec-head h2{font-family:'Zpix','Noto Sans SC';font-size:27px;color:#fff;text-shadow:2px 2px 0 var(--magenta)}
.sec-head .sub{color:var(--muted);font-size:14px}
.sec-kicker{font-family:'Press Start 2P';font-size:8px;color:var(--cyan);display:block;margin-bottom:8px}

/* ============ quest cards (article grid) ============ */
.quests{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.quest{display:flex;flex-direction:column;background:var(--panel);border:3px solid #000;box-shadow:0 0 0 3px var(--line),0 6px 0 rgba(0,0,0,.5);border-radius:var(--radius);overflow:hidden;transition:transform .12s}
.quest:hover{transform:translateY(-3px);text-decoration:none}
.quest .qcover{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;background:var(--bg2);border-bottom:3px solid #000}
.quest .qbody{padding:16px 16px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.q-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.diff{font-family:'Press Start 2P';font-size:7px;padding:5px 7px;border-radius:4px;color:#0a0a14}
.diff.d1{background:var(--green)}      /* 新手 */
.diff.d2{background:var(--cyan)}       /* 进阶 */
.diff.d3{background:var(--gold)}       /* 高玩 */
.diff.d4{background:var(--magenta);color:#fff} /* 防骗 */
.q-min{font-size:11px;color:var(--faint)}
.quest h3{font-family:'Zpix','Noto Sans SC';font-size:18px;color:#fff;line-height:1.45}
.quest p{font-size:13.5px;color:var(--muted);line-height:1.7;flex:1}
.q-go{font-family:'Press Start 2P';font-size:8px;color:var(--cyan)}

/* feature / step cards */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.step{background:var(--panel);border:3px solid #000;box-shadow:0 0 0 3px var(--line);border-radius:var(--radius);padding:18px}
.step .num{font-family:'Press Start 2P';font-size:14px;color:var(--gold);text-shadow:2px 2px 0 #000;display:block;margin-bottom:10px}
.step h3{font-family:'Zpix','Noto Sans SC';font-size:17px;color:#fff;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted)}

/* dual-conversion arcade cards */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.duocard{background:var(--panel);border:3px solid #000;box-shadow:0 0 0 3px var(--line),0 6px 0 rgba(0,0,0,.5);border-radius:var(--radius);padding:22px}
.duocard h3{font-family:'Zpix','Noto Sans SC';font-size:20px;color:#fff;margin-bottom:6px}
.duocard h3 .ic{color:var(--gold)}
.duocard p{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.duocard .codemini{font-family:'Press Start 2P';font-size:13px;color:var(--gold);background:#06060d;border:2px dashed var(--gold);border-radius:5px;padding:8px 10px;display:inline-block;margin-bottom:14px;user-select:all}

/* ============ article typography ============ */
.article{max-width:var(--readw);margin:0 auto;padding:36px 0 20px}
.crumbs{font-size:12.5px;color:var(--faint);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.art-head .diff{margin-bottom:14px}
.article h1{font-family:'Zpix','Noto Sans SC';font-size:33px;line-height:1.4;color:#fff;text-shadow:2px 2px 0 var(--magenta-d);margin-bottom:14px}
.byline{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--faint);border-bottom:2px solid var(--line-soft);padding-bottom:18px;margin-bottom:8px}
.byline .au{color:var(--ink-dim)}
.article-cover{margin:24px 0}
.article-cover img{width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;border:3px solid #000;box-shadow:0 0 0 3px var(--line);border-radius:var(--radius)}
.article-cover figcaption{font-size:12px;color:var(--faint);margin-top:8px;text-align:center}
.toc{background:var(--panel);border-left:4px solid var(--cyan);border-radius:6px;padding:16px 20px;margin:24px 0}
.toc .toc-t{font-family:'Zpix','Noto Sans SC';font-size:15px;color:var(--cyan);margin-bottom:10px}
.toc ol{margin-left:20px;font-size:14.5px}
.toc li{margin:5px 0}
.toc a{color:var(--ink-dim)}
.prose{font-size:16.5px;line-height:1.95;color:var(--ink-dim)}
.prose h2{font-family:'Zpix','Noto Sans SC';font-size:24px;color:#fff;margin:40px 0 14px;padding-top:10px;text-shadow:2px 2px 0 var(--magenta-d)}
.prose h3{font-family:'Zpix','Noto Sans SC';font-size:19px;color:var(--gold);margin:28px 0 10px}
.prose p{margin:14px 0}
.prose ul,.prose ol{margin:14px 0 14px 26px}
.prose li{margin:7px 0}
.prose strong{color:#fff}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{border-left:4px solid var(--magenta);background:var(--panel2);padding:14px 18px;margin:20px 0;border-radius:0 6px 6px 0;color:var(--muted)}
.prose code{font-family:'Press Start 2P',ui-monospace,monospace;font-size:.78em;background:#06060d;color:var(--green);padding:2px 6px;border-radius:4px}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px}
.prose th,.prose td{border:2px solid var(--line);padding:9px 12px;text-align:left}
.prose th{background:var(--panel);color:var(--cyan);font-family:'Zpix','Noto Sans SC'}
.prose figure img{border:3px solid #000;box-shadow:0 0 0 3px var(--line);border-radius:6px;margin:8px 0}

/* callouts */
.note{border:3px solid var(--line);border-left:5px solid var(--cyan);background:var(--panel);border-radius:6px;padding:14px 18px;margin:22px 0}
.note.warn{border-left-color:var(--gold)}
.note.danger{border-left-color:var(--magenta)}
.note .nt{font-family:'Zpix','Noto Sans SC';font-size:14px;margin-bottom:6px;color:var(--cyan)}
.note.warn .nt{color:var(--gold)}
.note.danger .nt{color:var(--magenta)}
.note p{margin:6px 0;font-size:14.5px;color:var(--muted)}

/* hands-on box */
.handson{border:3px solid #000;box-shadow:0 0 0 3px var(--green-d);background:var(--panel);border-radius:var(--radius);padding:18px 20px;margin:26px 0}
.handson .ht{font-family:'Press Start 2P';font-size:9px;color:var(--green);margin-bottom:10px}

/* in-article CTA */
.cta-inline{border:3px solid #000;box-shadow:0 0 0 3px var(--line),0 6px 0 rgba(0,0,0,.5);background:linear-gradient(180deg,var(--panel),var(--panel2));border-radius:var(--radius);padding:22px;margin:30px 0;text-align:center}
.cta-inline .cit{font-family:'Zpix','Noto Sans SC';font-size:18px;color:#fff;margin-bottom:6px}
.cta-inline .codemini{font-family:'Press Start 2P';font-size:13px;color:var(--gold);background:#06060d;border:2px dashed var(--gold);border-radius:5px;padding:7px 10px;display:inline-block;margin:8px 0 14px;user-select:all}
.cta-inline .foot-note{text-align:center}

/* related quests */
.related{margin-top:40px;border-top:2px solid var(--line-soft);padding-top:24px}

/* ============ tools ============ */
.tool-wrap{max-width:680px;margin:0 auto;padding:36px 0}
.toolcard{background:var(--panel);border:3px solid #000;box-shadow:0 0 0 3px var(--line),0 8px 0 rgba(0,0,0,.5);border-radius:var(--radius);padding:24px}
.field{margin:16px 0}
.field label{display:block;font-family:'Zpix','Noto Sans SC';font-size:14px;color:var(--ink-dim);margin-bottom:7px}
.field input,.field select{width:100%;font-family:ui-monospace,'Press Start 2P',monospace;font-size:15px;background:#06060d;color:var(--ink);border:3px solid var(--line);border-radius:6px;padding:12px 14px}
.field input:focus,.field select:focus{outline:none;border-color:var(--cyan)}
.field .hint{font-size:12px;color:var(--faint);margin-top:6px}
.result{margin-top:20px;background:#06060d;border:3px dashed var(--cyan);border-radius:6px;padding:18px}
.result .big{font-family:'Press Start 2P';font-size:22px;color:var(--gold);text-shadow:0 0 10px rgba(255,206,58,.4);word-break:break-all}
.result .rrow{display:flex;justify-content:space-between;gap:12px;margin:8px 0;font-size:14px;color:var(--muted)}
.result .rrow b{color:var(--ink)}
.price-tag{font-size:12px;color:var(--faint);margin-top:10px}
.ok{color:var(--green)}.bad{color:var(--magenta)}

/* SEO guide (collapsible) */
.seo-guide{max-width:var(--readw);margin:30px auto 0}
.seo-guide details{background:var(--panel);border:2px solid var(--line);border-radius:var(--radius);padding:0 20px}
.seo-guide summary{font-family:'Zpix','Noto Sans SC';font-size:16px;color:var(--cyan);cursor:pointer;padding:16px 0;list-style:none}
.seo-guide summary::-webkit-details-marker{display:none}
.seo-guide summary::before{content:"▶ ";color:var(--gold)}
.seo-guide details[open] summary::before{content:"▼ "}
.seo-guide .prose{padding-bottom:18px}

/* ============ footer ============ */
.site-foot{position:relative;z-index:2;border-top:4px solid #000;box-shadow:0 -4px 0 var(--magenta);background:linear-gradient(180deg,#120a28,#0a0a14);margin-top:50px;padding:38px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.foot-grid h4{font-family:'Zpix','Noto Sans SC';font-size:15px;color:var(--gold);margin-bottom:12px}
.foot-grid a{display:block;color:var(--muted);font-size:14px;margin:7px 0}
.foot-grid a:hover{color:var(--cyan)}
.foot-disc{font-size:12.5px;color:var(--faint);line-height:1.7;margin-top:8px}
.foot-bottom{border-top:2px solid var(--line-soft);margin-top:26px;padding-top:18px;font-size:12px;color:var(--faint);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ============ misc ============ */
.lead-strip{background:var(--panel2);border-top:2px solid var(--line);border-bottom:2px solid var(--line)}
.center{text-align:center}
.mt0{margin-top:0}
hr{border:none;border-top:2px solid var(--line-soft);margin:30px 0}

/* ============ responsive ============ */
@media (max-width:880px){
  /* §9: on mobile show title → conversion panel above fold, lede + art after */
  .hero{grid-template-columns:1fr;gap:16px;padding:22px 0;grid-template-areas:"head" "panel" "lede" "art"}
  .hero .tag{margin-bottom:12px}
  h1.hero-h1{font-size:30px}
  .hero .panel{margin-top:6px}
  .hero .art{min-height:180px;margin-top:4px}
  .hero .art img,.hero .art svg{max-width:230px}
  .duo{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav{display:none;position:absolute;top:100%;right:0;left:0;flex-direction:column;background:#120a28;border-bottom:4px solid #000;padding:10px 16px;gap:2px}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .navtoggle{display:inline-block}
  .lv{align-self:flex-start;margin-top:6px}
}
@media (max-width:560px){
  body{font-size:15.5px}
  h1.hero-h1{font-size:26px}
  .article h1{font-size:25px}
  .prose{font-size:16px}
  .prose h2{font-size:21px}
  .foot-grid{grid-template-columns:1fr}
  .code{flex-direction:column;align-items:stretch}
  .copy{width:100%}
  .wrap{padding:0 16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}