:root{
  --canvas:#EDEFF2; --panel:#FFFFFF; --well:#F4F5F7; --chip:#F0F1F3;
  --ink:#111214; --ink-2:#6B7079; --ink-3:#9AA0A8; --red:#E5484D;
  --r-xl:24px; --r-l:20px; --r-m:14px; --r-s:10px;
  --shadow:0 1px 2px rgba(17,18,20,.04),0 6px 20px rgba(17,18,20,.05);
  --shadow-2:0 2px 4px rgba(17,18,20,.06),0 16px 40px rgba(17,18,20,.12);
  --head:"Plus Jakarta Sans",Inter,system-ui,sans-serif;
  --mono:"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:16px}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--canvas);color:var(--ink);font:400 15px/1.5 Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
svg{width:20px;height:20px;flex:none}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.cap{font-size:13px;color:var(--ink-2)}
h1,h2,h3,b{font-family:var(--head)}
h1,h2,h3{margin:0;letter-spacing:-.02em}

.app{display:grid;grid-template-columns:68px 1fr;gap:12px;padding:12px;max-width:1440px;margin:0 auto}
.rail{position:sticky;top:12px;height:calc(100vh - 24px);display:flex;flex-direction:column;align-items:center;gap:20px;padding:8px 0}
.rail-logo{width:48px;height:48px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center}
.rail-logo svg{width:24px;height:24px}
.rail-nav{display:flex;flex-direction:column;gap:10px}
.rb{width:44px;height:44px;border-radius:50%;background:var(--panel);display:grid;place-items:center;box-shadow:var(--shadow);color:var(--ink);transition:background .15s ease-out,color .15s ease-out;position:relative}
.rb:hover,.rb.on{background:var(--ink);color:#fff}
.rb[data-tip]:hover::after{content:attr(data-tip);position:absolute;left:54px;top:50%;transform:translateY(-50%);background:var(--ink);color:#fff;font-size:12px;padding:4px 10px;border-radius:999px;white-space:nowrap}

.main{display:flex;flex-direction:column;gap:12px;min-width:0}
.card{background:var(--panel);border-radius:var(--r-xl);box-shadow:var(--shadow);padding:22px}
.card.dark{background:var(--ink);color:#fff}
.card.dark .cap{color:#A9AEB6}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--chip);color:var(--ink-2);border-radius:999px;padding:4px 12px;font-size:12px;font-weight:500;width:max-content}
.chip.inv{background:#26282C;color:#C9CDD3}
.count{background:var(--chip);border-radius:999px;padding:2px 10px;font-size:13px;color:var(--ink-2)}
.ic{width:40px;height:40px;border-radius:50%;background:var(--well);display:grid;place-items:center;color:var(--ink)}
.dark .ic{background:#26282C;color:#fff}
.big{font-size:40px;font-weight:500;letter-spacing:-.04em;line-height:1}
.big small{font-size:15px;color:var(--ink-3);margin-left:2px;letter-spacing:0}

.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 4px 2px;flex-wrap:wrap}
.bar-l{display:flex;align-items:center;gap:10px}
.word{font-family:var(--head);font-weight:700;font-size:22px;letter-spacing:-.03em}
.crumb{color:var(--ink-2);font-size:14px}
.tabs{display:flex;gap:4px;background:var(--panel);border-radius:999px;padding:4px;box-shadow:var(--shadow);overflow-x:auto;max-width:100%}
.tabs a{padding:7px 14px;border-radius:999px;font-size:13px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:background .15s ease-out,color .15s ease-out}
.tabs a:hover{color:var(--ink)}
.tabs a.on{background:var(--ink);color:#fff}

.bento{display:grid;gap:12px}
.hero{grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto}
.hero-main{grid-row:span 2;display:flex;flex-direction:column;gap:20px;padding:28px}
.hero-main h1{font-size:clamp(34px,4.4vw,56px);font-weight:700;line-height:1.02;letter-spacing:-.035em}
.sus{display:flex;align-items:center;gap:16px;margin-top:auto}
.sus-col{background:var(--well);border-radius:var(--r-l);padding:16px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.sus-col .big{font-size:56px}
.sus-arrow{width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;flex:none}
.meter{display:flex;gap:4px;height:8px}
.meter span{display:block;height:100%;border-radius:999px;background:var(--ink)}
.meter .m2{background:var(--chip)}
.tile{display:flex;flex-direction:column;gap:10px;justify-content:space-between;min-height:168px}
.tile .ic{margin-bottom:auto}

.pillars{grid-template-columns:repeat(4,1fr) 1.6fr}
.pillar{display:flex;flex-direction:column;gap:8px}
.pillar b{font-size:17px;margin-top:8px}
.question{background:var(--ink);color:#fff;display:flex;flex-direction:column;gap:12px;justify-content:space-between}
.question p{margin:0;font-family:var(--head);font-weight:600;font-size:20px;line-height:1.3;letter-spacing:-.015em}

.sec-h{display:flex;align-items:center;gap:10px;padding:16px 6px 4px}
.sec-h h2{font-size:30px;font-weight:700}
.sec-h.in{padding:0 0 16px}

/* Direction bento */
.dir{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(0,1fr);grid-auto-rows:auto;gap:12px;margin-top:12px;scroll-margin-top:12px}
.dir-video{padding:10px;grid-row:span 2;display:flex;flex-direction:column;gap:10px}
.vwrap{position:relative;border-radius:var(--r-l);overflow:hidden;background:var(--well);aspect-ratio:16/10}
.vwrap video{display:block;width:100%;height:100%;object-fit:cover}
.vhead{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 10px 4px}
.vhead .t{display:flex;align-items:center;gap:12px;min-width:0}
.vnum{width:40px;height:40px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-family:var(--mono);font-size:14px;flex:none}
.vhead h3{font-size:24px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vhead .tag{font-size:13px;color:var(--ink-2);margin-top:1px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;border-radius:999px;padding:6px 6px 6px 16px;font-size:13px;font-weight:500;white-space:nowrap;transition:opacity .15s ease-out}
.btn:hover{opacity:.88}
.btn .bi{width:30px;height:30px;border-radius:50%;background:#fff;color:var(--ink);display:grid;place-items:center}
.btn .bi svg{width:16px;height:16px}

.chap{display:flex;flex-direction:column;gap:6px;padding:14px}
.chap .hd{display:flex;align-items:center;justify-content:space-between;padding:4px 6px 8px}
.chap .hd b{font-size:15px}
.chap button{all:unset;box-sizing:border-box;display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r-m);background:var(--well);cursor:pointer;font-size:13px;line-height:1.3;transition:background .15s ease-out,color .15s ease-out}
.chap button:hover{background:#ECEEF1}
.chap button[aria-current="true"]{background:var(--ink);color:#fff}
.chap button[aria-current="true"] .ts{color:#A9AEB6}
.chap .ts{font-family:var(--mono);font-size:12px;color:var(--ink-3);min-width:34px}
.chap:focus-within button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

.prob{display:flex;flex-direction:column;gap:12px}
.prob p{margin:0;font-family:var(--head);font-size:17px;font-weight:600;line-height:1.35;letter-spacing:-.01em}
.bet{background:var(--well);border-radius:var(--r-m);padding:12px 14px;font-size:13px;color:var(--ink-2)}
.bet b{display:block;font-size:12px;color:var(--ink);margin-bottom:2px}

.row3{grid-column:1 / -1;display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:12px}
.how{display:flex;flex-direction:column;gap:8px}
.how .hd,.ev .hd{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.how .hd b,.ev .hd b{font-size:15px}
.how ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.how li{display:flex;gap:10px;align-items:flex-start;font-size:13px;background:var(--well);border-radius:var(--r-s);padding:8px 10px}
.how li .n{font-family:var(--mono);color:var(--ink-3);font-size:12px}
.shot{padding:0;overflow:hidden;position:relative;display:flex;flex-direction:column;cursor:zoom-in;background:var(--panel)}
.shot img{display:block;width:100%;aspect-ratio:16/11;object-fit:cover;object-position:top left;background:var(--well)}
.shot .lab{position:relative;margin-top:-22px;background:var(--panel);border-radius:var(--r-l) var(--r-l) 0 0;padding:12px 16px 14px;font-size:12px;color:var(--ink-2);display:flex;justify-content:space-between}
.shot .lab .mono{color:var(--ink)}

.ev{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 20px}
.ev .hd{margin:0 8px 0 0}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--well);border-radius:999px;padding:6px 12px;font-size:12px;color:var(--ink)}
.pill.dark{background:var(--ink);color:#fff}
.pill.red{background:var(--red);color:#fff}
details.trade{margin-left:auto}
details.trade summary{list-style:none;cursor:pointer}
details.trade summary::-webkit-details-marker{display:none}
details.trade[open] .tr{display:flex}
.tr{display:none;flex-wrap:wrap;gap:6px;margin-top:8px}

/* Compare */
.cmp{display:grid;grid-template-columns:minmax(150px,1.4fr) repeat(5,minmax(72px,1fr));gap:6px;align-items:stretch;overflow-x:auto}
.cmp .h{font-size:12px;color:var(--ink-2);padding:0 10px 4px;display:flex;align-items:center;gap:6px}
.cmp .h svg{width:16px;height:16px}
.cmp .name{background:var(--well);border-radius:var(--r-m);padding:12px 14px;font-weight:600;font-family:var(--head);display:flex;align-items:center;gap:10px}
.cmp .name .vnum{width:28px;height:28px;font-size:12px}
.cmp .cell{background:var(--well);border-radius:var(--r-m);display:grid;place-items:center;padding:12px}
.lvl{display:flex;gap:4px}
.lvl i{display:block;width:10px;height:10px;border-radius:50%;background:#DADDE2}
.lvl i.on{background:var(--ink)}

.method{grid-template-columns:repeat(4,1fr)}
.method .m{display:flex;flex-direction:column;gap:8px;min-height:150px}
.method .m b{margin-top:auto;font-size:16px}

.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 8px 20px;font-size:13px}

.lightbox{position:fixed;inset:0;background:rgba(14,15,17,.86);display:none;align-items:center;justify-content:center;z-index:50;padding:24px;cursor:zoom-out}
.lightbox.on{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:var(--r-l);box-shadow:var(--shadow-2)}

@media (max-width:1100px){
  .hero{grid-template-columns:1fr 1fr}
  .hero-main{grid-column:1 / -1;grid-row:auto}
  .pillars{grid-template-columns:repeat(2,1fr)}
  .question{grid-column:1 / -1}
  .dir{grid-template-columns:1fr}
  .dir-video{grid-row:auto}
  .row3{grid-template-columns:1fr 1fr}
  .method{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .app{grid-template-columns:1fr;padding:8px}
  .rail{display:none}
  .card{padding:18px;border-radius:var(--r-l)}
  .hero{grid-template-columns:1fr 1fr}
  .sus{flex-wrap:wrap}
  .sus-col .big{font-size:44px}
  .row3{grid-template-columns:1fr}
  .vhead{flex-wrap:wrap}
  .vhead h3{font-size:20px;white-space:normal}
  .method{grid-template-columns:1fr 1fr}
  .tile{min-height:140px}
  .big{font-size:32px}
}