:root{
  --green:#87ff71;
  --yellow:#ffce5c;
  --ink:#192617;
  --bg:#192617;
  --bg2:#101d0f;
  --panel:#1f3320;
  --line:#33512f;
  --txt:#f0ffe7;
  --dim:#aec6a6;
  --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html.lock{overflow:hidden}
body{
  margin:0;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(135,255,113,.10) 1.4px,transparent 1.5px);
  background-size:26px 26px;
  background-attachment:fixed;
  color:var(--txt);
  font:400 17px/1.7 'Outfit',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3{font-weight:900;line-height:1.14;letter-spacing:-.01em;margin:0 0 .5em}
a{color:var(--green)}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
img{max-width:100%}
.skip{position:absolute;left:12px;top:-70px;z-index:99;background:var(--yellow);color:var(--ink);padding:10px 14px;border-radius:8px;font-weight:700;text-decoration:none}
.skip:focus{top:10px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

/* 页头 */
.mast{position:relative;z-index:40;background:var(--bg2);border-bottom:3px solid var(--ink);box-shadow:0 3px 0 var(--yellow)}
.mast-in{max-width:1180px;margin:0 auto;padding:8px 16px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}
.mast-nav{display:flex;align-items:center;gap:2px;min-width:0}
.mast-nav-r{justify-content:flex-end}
.m-link{display:inline-flex;align-items:center;min-height:44px;padding:6px 9px;color:var(--txt);text-decoration:none;font-weight:500;font-size:1rem;border-bottom:2px solid transparent;white-space:nowrap}
.m-link:hover{color:var(--green);border-color:var(--green)}
.brand{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--txt);font-weight:900}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;background:var(--green);color:var(--ink);font-size:1.25rem;font-weight:900;clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}
.brand-img{width:36px;height:36px;border-radius:8px;object-fit:cover;display:block}
.brand-txt{font-size:1.05rem;letter-spacing:.02em;white-space:nowrap}
.mast-tools{display:flex;align-items:center;gap:8px;justify-self:end}
.find{display:flex;align-items:center;background:var(--bg);border:2px solid var(--line);border-radius:999px;overflow:hidden}
.find input{width:130px;min-height:40px;border:0;background:transparent;color:var(--txt);padding:0 12px;font:inherit;font-size:1rem}
.find input:focus{outline:none}
.find button{min-height:40px;border:0;background:var(--green);color:var(--ink);font:inherit;font-weight:700;padding:0 13px;cursor:pointer}
.burger{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:6px 13px;background:var(--yellow);color:var(--ink);border:2px solid var(--ink);border-radius:999px;font:inherit;font-weight:700;cursor:pointer}
.bars{display:grid;gap:3px}
.bars i{display:block;width:16px;height:2px;background:var(--ink)}

/* 粘性锚点条 */
.anchors{position:sticky;top:0;z-index:35;background:var(--green);border-bottom:3px solid var(--ink)}
.anchors-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:8px;padding:8px 16px;overflow-x:auto;scrollbar-width:none}
.anchors-in::-webkit-scrollbar{height:0}
.anchors-dot{flex:0 0 auto;width:14px;height:14px;background:var(--ink);clip-path:polygon(50% 0,100% 100%,0 100%)}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;min-height:40px;padding:6px 13px;border:2px solid var(--ink);border-radius:999px;color:var(--ink);text-decoration:none;font-weight:700;font-size:1rem}
.chip:hover{background:var(--ink);color:var(--green)}

/* 全屏菜单 */
.drawer{position:fixed;inset:0;z-index:70;background:var(--ink);display:none;overflow-y:auto}
.drawer[data-open]{display:block}
.drawer-in{max-width:760px;margin:0 auto;padding:18px 18px 60px}
.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.drawer-ttl{font-weight:900;font-size:1.4rem;color:var(--yellow)}
.drawer-x{min-height:44px;padding:8px 16px;border-radius:999px;border:2px solid var(--yellow);background:transparent;color:var(--yellow);font:inherit;font-weight:700;cursor:pointer}
.find-d{display:flex;width:100%;margin-bottom:18px}
.find-d input{flex:1;width:auto}
.drawer-nav{display:grid;border-top:2px dashed var(--line)}
.d-link{display:flex;align-items:center;min-height:56px;padding:10px 4px;border-bottom:2px dashed var(--line);color:var(--txt);text-decoration:none;font-size:1.15rem;font-weight:700;transition:padding-left .18s ease,color .18s ease}
.d-link:hover{color:var(--green);padding-left:14px}

/* 首屏 */
.hero{position:relative;max-width:1180px;margin:0 auto;padding:28px 16px 38px;display:grid;grid-template-columns:1.02fr .98fr;gap:26px;align-items:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(135,255,113,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,206,92,.08) 1px,transparent 1px);background-size:38px 38px}
.hero::after{content:"";position:absolute;right:-42px;top:10%;width:190px;height:190px;background:var(--yellow);opacity:.16;clip-path:polygon(50% 0,100% 100%,0 100%);transform:rotate(12deg);pointer-events:none}
.hero-art{order:-1;position:relative;z-index:1;min-width:0}
.hero-txt{position:relative;z-index:1;text-align:right;min-width:0}
.hero-txt h1{margin:0;font-size:clamp(2.1rem,6.4vw,4.6rem);line-height:1.05;letter-spacing:-.02em}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;margin-top:24px;padding:12px 26px;background:var(--yellow);color:var(--ink);border:3px solid var(--ink);border-radius:var(--r);font-weight:900;font-size:1.05rem;text-decoration:none;transform:rotate(-2deg);box-shadow:5px 5px 0 var(--green)}
.btn:hover{background:var(--green);box-shadow:5px 5px 0 var(--yellow)}
.hero-fig{margin:0;position:relative}
.hero-fig img{display:block;width:100%;height:auto;border:3px solid var(--ink);border-radius:var(--r);transform:rotate(-1.4deg);box-shadow:8px 8px 0 rgba(135,255,113,.42)}
.hero-fig::after{content:"";position:absolute;left:-14px;bottom:-16px;width:64px;height:64px;border-radius:50%;border:3px dashed var(--green);mix-blend-mode:screen}
.hero-fig--shapes{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:center}
.hero-fig--shapes span{display:block;height:104px;border:3px solid var(--ink);border-radius:var(--r);background:var(--green)}
.hero-fig--shapes .s1{clip-path:polygon(50% 0,100% 100%,0 100%);background:var(--yellow)}
.hero-fig--shapes .s2{transform:rotate(6deg)}
.hero-fig--shapes .s3{background:transparent;border:3px dashed var(--green);border-radius:50%}

/* 主体 */
.wrap{max-width:1180px;margin:0 auto;padding:10px 16px 70px;display:grid;grid-template-columns:236px minmax(0,1fr);gap:26px;align-items:start}
.side{position:sticky;top:74px;align-self:start}
.side-h{margin:0 0 10px;font-weight:900;letter-spacing:.18em;color:var(--yellow);font-size:1rem}
.side-list{list-style:none;margin:0;padding:0;border-left:3px dotted var(--line)}
.side-list li{margin:0}
.side-list a{display:flex;align-items:center;gap:8px;min-height:44px;padding:4px 10px;color:var(--txt);text-decoration:none;font-size:1rem;border-bottom:1px dotted transparent}
.side-list a:hover{color:var(--green);background:rgba(135,255,113,.09)}
.num{font-weight:900;color:var(--green);font-variant-numeric:tabular-nums}
.side-blk{margin-top:18px;height:86px;border-radius:var(--r);border:3px solid var(--ink);background:repeating-linear-gradient(45deg,var(--yellow) 0 8px,var(--ink) 8px 16px)}

.paper{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:22px 20px 32px;box-shadow:inset 0 0 0 1px rgba(135,255,113,.14)}
.paper-h{color:var(--green);font-size:clamp(1.5rem,3.4vw,2.1rem)}
.subtitle{margin:0 0 20px;padding-bottom:14px;border-bottom:2px dashed var(--line);color:var(--dim);font-size:1rem}
.paper h2{font-size:clamp(1.3rem,3vw,1.85rem);color:var(--green);margin-top:0}
.paper h3{font-size:1.2rem;color:var(--yellow)}
.paper p{margin:0 0 1em}
.paper ul,.paper ol{margin:0 0 1em;padding-left:1.35em}
.paper li{margin:.35em 0}
.paper a{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.paper img{height:auto;border-radius:var(--r);border:2px solid var(--ink)}
.paper blockquote{margin:0 0 1em;padding:12px 16px;border-left:5px solid var(--yellow);background:rgba(255,206,92,.09);border-radius:0 var(--r) var(--r) 0}
.paper blockquote p:last-child{margin:0}
.paper article{padding-bottom:6px;scroll-margin-top:86px}
.paper article + article{margin-top:34px;padding-top:30px;border-top:3px dashed var(--line)}
.paper > article:first-of-type{padding-top:0}
.paper table{width:100%;border-collapse:collapse;margin:0 0 1em;font-size:1rem}
.paper th,.paper td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.paper th{background:rgba(135,255,113,.12)}
.paper code{background:#0c170b;padding:1px 5px;border-radius:5px;font-size:.96em}
.paper hr{border:0;border-top:2px dotted var(--line);margin:22px 0}

/* 页脚 */
.foot{position:relative;background:var(--bg2);border-top:4px solid var(--green);margin-top:16px;padding:34px 0 14px;overflow:hidden}
.foot::before{content:"";position:absolute;left:-32px;top:-32px;width:128px;height:128px;background:var(--yellow);opacity:.15;clip-path:polygon(50% 0,100% 100%,0 100%);transform:rotate(-18deg)}
.foot-grid{position:relative;max-width:1180px;margin:0 auto;padding:0 16px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:22px}
.foot dl{margin:0}
.foot dt{color:var(--yellow);font-weight:900;letter-spacing:.16em;margin-bottom:4px}
.foot dd{margin:0}
.f-link{display:inline-flex;align-items:center;min-height:40px;padding:2px 0;color:var(--txt);text-decoration:none;border-bottom:2px solid transparent}
.f-link:hover{color:var(--green);border-color:var(--green)}
.brand-f{margin-bottom:6px}
.foot-k{margin:12px 0 0;color:var(--dim);font-size:1rem}
.copy{position:relative;max-width:1180px;margin:22px auto 0;padding:12px 16px 0;border-top:2px dotted var(--line);color:var(--dim);display:flex;gap:14px;flex-wrap:wrap;justify-content:space-between;font-size:1rem}
.copy a{color:var(--yellow);display:inline-flex;align-items:center;min-height:40px;text-decoration:none}
.copy a:hover{color:var(--green)}

/* 动效 */
.js .paper article{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.js .paper article.in{opacity:1;transform:none}

@media (max-width:1020px){
  .mast-nav{display:none}
  .mast-in{grid-template-columns:auto 1fr auto}
  .brand{justify-self:start}
  .mast-tools{grid-column:3}
}
@media (max-width:860px){
  .wrap{grid-template-columns:1fr}
  .side{position:static;order:2;display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
  .side-h{grid-column:1/-1;margin-bottom:0}
  .side-blk{margin:0;height:auto;min-height:76px}
  .hero{min-height:0}
}
@media (max-width:720px){
  .find{display:none}
  .find-d{display:flex}
  .mast-in{padding:8px 12px}
  .hero{grid-template-columns:1fr;padding:22px 14px 30px;gap:20px}
  .hero-art{order:2}
  .hero-txt{text-align:right}
  .hero-fig--shapes span{height:84px}
  .wrap{padding:8px 14px 56px}
  .paper{padding:18px 15px 26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:18px}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:430px){
  .foot-grid{grid-template-columns:1fr}
  .side{grid-template-columns:1fr}
  .burger-t{display:none}
  .burger{padding:8px 12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .paper article{opacity:1;transform:none;transition:none}
  .btn{transform:none}
  .hero-fig img{transform:none}
  .d-link{transition:none}
}

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