:root{--bg:#fff;--bg2:#f6f7fb;--ink:#0c1024;--ink2:#4a5068;--mute:#8a90a6;--line:#e6e8f0;--pri:#1a3cff;--pri-t:#eef1ff;--mint:#0a7a57;--mint-t:#d9fbea;--sky:#0b6485;--sky-t:#ddf5fd;--vio:#5146d6;--vio-t:#ebeaff;--gold:#e5d1a1;--card:#fff;--sh:0 1px 2px rgba(12,16,36,.04),0 8px 24px rgba(12,16,36,.06);color-scheme:light}
[data-theme=dark]{--bg:#0e0f12;--bg2:#15171c;--ink:#eef0f6;--ink2:#b3b8c8;--mute:#7a8094;--line:#262a33;--pri:#7b93ff;--pri-t:#1a1f3a;--mint:#4fd6a8;--mint-t:#10281f;--sky:#62c6ea;--sky-t:#0f2530;--vio:#a39cff;--vio-t:#1e1b3a;--card:#17191f;--sh:0 1px 2px rgba(0,0,0,.3);color-scheme:dark}
@font-face{font-family:GI;src:url(/fonts/inter.woff2) format("woff2");font-display:swap}
@font-face{font-family:GM;src:url(/fonts/mono.woff2) format("woff2");font-display:swap}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 "Albert Sans",GI,system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;transition:background .25s,color .25s}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
a{color:inherit;text-decoration:none}img{max-width:100%}
.mono,.kicker,kbd,.tag,.meta dt{font-family:GM,ui-monospace,SFMono-Regular,Menlo,monospace}
.kicker{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--pri);font-weight:600;display:inline-flex;gap:8px;align-items:center}
.kicker:before{content:"";width:18px;height:2px;background:currentColor}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
/* header */
.hd{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;gap:20px;height:64px}
.logo{font-weight:800;letter-spacing:.06em;font-size:19px;display:flex;align-items:center;gap:8px}
.logo i{width:22px;height:22px;border-radius:7px;background:conic-gradient(from 200deg,var(--pri),var(--vio),var(--mint),var(--pri));display:inline-block}
.logo b{color:var(--pri)}
.nav{display:flex;gap:4px;margin-left:12px}
.nav>div{position:relative}
.nav>div>button,.nav>a{font:inherit;font-size:15px;background:none;border:0;color:var(--ink2);padding:8px 12px;border-radius:10px;cursor:pointer}
.nav>div>button:after{content:" ▾";font-size:10px}
.nav>div>button:hover,.nav>a:hover,.nav>div.open>button{background:var(--bg2);color:var(--ink)}
.dd{display:none;position:absolute;top:calc(100% + 8px);left:0;width:520px;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 50px rgba(12,16,36,.14);padding:16px;grid-template-columns:1fr 1fr;gap:8px}
.nav>div.open .dd{display:grid}
.dd a{display:block;padding:12px 14px;border-radius:12px}
.dd a:hover{background:var(--bg2)}
.dd b{display:block;font-size:15px}.dd small{color:var(--mute);font-size:13px;line-height:1.5;display:block}
.dd .k{font-family:GM,monospace;font-size:10px;letter-spacing:.16em;color:var(--pri);text-transform:uppercase}
.sp{flex:1}
.btn-ic{font:inherit;display:inline-flex;align-items:center;gap:8px;background:var(--bg2);border:1px solid var(--line);color:var(--ink2);border-radius:12px;padding:7px 12px;cursor:pointer;font-size:14px}
.btn-ic:hover{color:var(--ink);border-color:var(--pri)}
kbd{font-size:11px;border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg);color:var(--mute)}
.burger{display:none}
@media(max-width:820px){.nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 16px;margin:0}.nav.show{display:flex}.dd{position:static;width:auto;grid-template-columns:1fr;box-shadow:none}.burger{display:inline-flex}.btn-ic .lbl,.btn-ic kbd{display:none}}
/* hero */
.hero{padding:72px 0 48px;position:relative;overflow:hidden}
.hero h1{font-size:clamp(36px,6vw,68px);line-height:1.08;letter-spacing:-.02em;margin:18px 0;font-weight:800}
.hero h1 em{font-style:normal;color:var(--pri)}
.hero p.lead{font-size:19px;color:var(--ink2);max-width:620px}
.hero .geo{position:absolute;right:-40px;top:40px;width:420px;height:420px;pointer-events:none;opacity:.9}
.geo span{position:absolute;border-radius:50%}
@media(max-width:900px){.hero .geo{display:none}}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.b{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid var(--line);background:var(--card);cursor:pointer;font-family:inherit;color:var(--ink)}
.b.p{background:var(--pri);color:#fff;border-color:var(--pri)}[data-theme=dark] .b.p{color:#0e0f12}
.b:hover{transform:translateY(-1px)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:40px;max-width:720px}
.stats div{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.stats b{font-size:28px;display:block;line-height:1.2}.stats small{color:var(--mute);font-family:GM,monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase}
@media(max-width:600px){.stats{grid-template-columns:repeat(2,1fr)}}
/* sections */
.sec{padding:56px 0;border-top:1px solid var(--line)}
.sh{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.sh h2{font-size:clamp(26px,3.4vw,38px);margin:10px 0 0;letter-spacing:-.01em;line-height:1.2}
.sh p{color:var(--ink2);margin:6px 0 0}
.more{color:var(--pri);font-weight:600;font-size:15px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--sh);transition:transform .2s,border-color .2s;display:flex;flex-direction:column;gap:10px;position:relative}
.card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--pri) 40%,var(--line))}
.card h3{margin:0;font-size:19px;line-height:1.4}
.card p{margin:0;color:var(--ink2);font-size:15px}
.card .foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--mute)}
.tag{display:inline-flex;align-items:center;gap:4px;font-size:12px;padding:3px 10px;border-radius:999px;background:var(--pri-t);color:var(--pri);white-space:nowrap}
.tag.m{background:var(--mint-t);color:var(--mint)}.tag.s{background:var(--sky-t);color:var(--sky)}.tag.v{background:var(--vio-t);color:var(--vio)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.num{font-family:GM,monospace;font-size:12px;color:var(--mute);letter-spacing:.1em}
.ico{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-weight:800;font-size:18px}
.c0{background:var(--pri-t);color:var(--pri)}.c1{background:var(--mint-t);color:var(--mint)}.c2{background:var(--sky-t);color:var(--sky)}.c3{background:var(--vio-t);color:var(--vio)}
.about{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px}
@media(max-width:820px){.about{grid-template-columns:1fr}}
/* issue */
.art{max-width:820px}
.item{border:1px solid var(--line);border-radius:24px;padding:28px;margin:0 0 24px;background:var(--card);box-shadow:var(--sh);scroll-margin-top:84px}
.item h2{font-size:28px;margin:10px 0 18px;line-height:1.3}
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0 0 20px;padding:14px;background:var(--bg2);border-radius:14px}
.meta dt{font-size:10px;letter-spacing:.14em;color:var(--mute);text-transform:uppercase}.meta dd{margin:0;font-size:14px;font-weight:600}
@media(max-width:600px){.meta{grid-template-columns:1fr 1fr}}
.item h4{font-family:GM,monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--pri);margin:18px 0 4px}
.item p{margin:0;color:var(--ink2)}
.quote{margin-top:18px;border-left:3px solid var(--pri);background:var(--pri-t);padding:12px 16px;border-radius:0 12px 12px 0;font-weight:600}
.acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.acts .b{padding:8px 14px;font-size:14px}
.crumb{font-size:14px;color:var(--mute);margin-bottom:8px}.crumb a{color:var(--pri)}
/* footer */
.ft{border-top:1px solid var(--line);padding:40px 0;color:var(--mute);font-size:14px;margin-top:40px}
.ft .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ft a{color:var(--ink2)}.ft a:hover{color:var(--pri)}
.ft .cols{display:flex;gap:40px;flex-wrap:wrap}.ft .cols div{display:flex;flex-direction:column;gap:6px}
/* search modal */
.sm{position:fixed;inset:0;z-index:100;background:rgba(12,16,36,.45);display:none;align-items:flex-start;justify-content:center;padding:10vh 16px}
.sm.on{display:flex}
.sbox{width:100%;max-width:640px;background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.3)}
.sbox input{width:100%;border:0;border-bottom:1px solid var(--line);padding:18px 20px;font:inherit;font-size:17px;background:transparent;color:var(--ink);outline:0}
.sres{max-height:56vh;overflow:auto;padding:8px}
.sres a{display:flex;gap:12px;padding:10px 12px;border-radius:12px;align-items:flex-start}
.sres a.sel,.sres a:hover{background:var(--pri-t)}
.sres b{display:block;font-size:15px}.sres small{color:var(--mute);font-size:13px;display:block;line-height:1.5}
.shint{padding:10px 16px;font-size:12px;color:var(--mute);border-top:1px solid var(--line);display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.shint button{font:inherit;font-size:12px;border:0;cursor:pointer}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:999px;font-size:14px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:200}.toast.on{opacity:1}
/* sites */
.fbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{font:inherit;font-size:14px;border:1px solid var(--line);background:var(--card);color:var(--ink2);padding:6px 14px;border-radius:999px;cursor:pointer}
.chip span{font-family:GM,monospace;font-size:11px;color:var(--mute);margin-left:6px}
.chip.on{background:var(--pri);border-color:var(--pri);color:#fff}.chip.on span{color:#dfe5ff}[data-theme=dark] .chip.on{color:#0e0f12}
.sinput{width:100%;max-width:420px;padding:11px 16px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;margin:8px 0 16px}
.flip{perspective:1200px;max-width:560px}
.flip .in{position:relative;min-height:260px;transition:transform .6s;transform-style:preserve-3d}
.flip.on .in{transform:rotateY(180deg)}
.flip .f,.flip .bk{position:absolute;inset:0;backface-visibility:hidden;border-radius:24px;padding:28px;border:1px solid var(--line);box-shadow:var(--sh)}
.flip .f{background:linear-gradient(135deg,var(--pri),var(--vio));color:#fff;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:12px;overflow:hidden}
.flip .f:after{content:"";position:absolute;right:-60px;bottom:-60px;width:220px;height:220px;border-radius:50%;border:30px solid rgba(255,255,255,.15)}
.flip .bk{background:var(--card);transform:rotateY(180deg);display:flex;flex-direction:column;gap:10px}
.note{font-size:13px;color:var(--mute);background:var(--bg2);border-radius:10px;padding:8px 12px}