/* ViralChart v4 prototype. One dark palette, one accent (the spike). Dark only: no light theme, no prefers-color-scheme flip. */
:root {
  color-scheme: dark;
  --bg: #0b0c11;
  --bg2: #10121a;
  --surf: #151823;
  --surf2: #1c2030;
  --line: #262a3b;
  --line2: #353b52;
  --ink: #eef0f7;
  --ink2: #aab0c3;
  --ink3: #8189a0;
  --acc: #ff4b3a;
  --acc-ink: #1a0603;
  --acc-soft: rgba(255, 75, 58, 0.13);
  --f-display: "Bricolage Grotesque", "Noto Sans SC", "Avenir Next Condensed", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Hanken Grotesk", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --gut: clamp(16px, 4vw, 32px);
  --max: 1240px;
  --r: 16px;
}
* { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink2); font: 400 16px/1.6 var(--f-body); overflow-x: hidden; min-height: 100vh; display: flex; flex-direction: column; font-variant-numeric: tabular-nums; }
body > main { flex: 1; }
:lang(zh) body, html[lang="zh"] body { line-height: 1.7; }
img, svg { max-width: 100%; }
a { color: var(--ink); text-decoration-color: var(--line2); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--acc); }
h1, h2, h3, h4 { font-family: var(--f-display); color: var(--ink); margin: 0; font-weight: 700; letter-spacing: -0.02em; line-height: 1.08; text-wrap: balance; }
p { margin: 0 0 1em; }
.num, .mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.eb { font: 500 12px/1.2 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink3); margin: 0 0 12px; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); width: 100%; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* header */
.top { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--bg) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 22px; height: 62px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 800 21px/1 var(--f-display); letter-spacing: -0.03em; color: var(--ink); flex: none; }
.logo .mk { width: 28px; height: 28px; flex: none; }
.logo b { font-weight: 800; }
.logo b i { font-style: normal; color: var(--acc); }
.steps { display: flex; gap: 2px; margin-left: 10px; }
.steps a { display: inline-flex; gap: 7px; align-items: baseline; padding: 8px 12px; border-radius: 999px; text-decoration: none; font: 600 14px/1 var(--f-body); color: var(--ink2); transition: background 0.15s, color 0.15s; }
.steps a span { font: 500 11px/1 var(--f-mono); color: var(--ink3); }
.steps a:hover, .steps a[aria-current] { background: var(--surf); color: var(--ink); }
.top-r { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 2px; font: 600 12px/1 var(--f-mono); }
.lang a { padding: 6px 10px; border-radius: 999px; text-decoration: none; color: var(--ink3); }
.lang a.on { background: var(--surf2); color: var(--ink); }
.tl { white-space: nowrap; display: inline-flex; align-items: center; text-decoration: none; font: 600 14px/1 var(--f-body); padding: 9px 12px; border-radius: 10px; color: var(--ink2); }
.tl:hover { color: var(--ink); background: var(--surf); }
.tl .plan { font: 600 10px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; background: var(--acc-soft); color: var(--acc); padding: 3px 6px; border-radius: 6px; margin-left: 6px; }
.menu-b { display: none; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 10px; width: 40px; height: 40px; cursor: pointer; align-items: center; justify-content: center; }
.menu-b svg { width: 20px; height: 20px; }
.svn { position: relative; display: inline-flex; align-items: center; gap: 6px; }
.svn b { font: 600 11px/1 var(--f-mono); background: var(--ink); color: var(--bg); min-width: 18px; height: 18px; border-radius: 9px; display: inline-grid; place-items: center; padding: 0 5px; }
.svn b[hidden] { display: none; }

/* buttons */
.btn { white-space: nowrap; display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 700 15px/1 var(--f-body); padding: 14px 20px; border-radius: 12px; border: 1px solid var(--line2); background: var(--surf); color: var(--ink); text-decoration: none; cursor: pointer; transition: transform 0.15s, background 0.15s, border-color 0.15s; min-height: 46px; }
.btn:hover { background: var(--surf2); border-color: var(--ink3); }
.btn.pri { background: var(--acc); border-color: var(--acc); color: var(--acc-ink); }
.btn.pri:hover { background: #ff6454; border-color: #ff6454; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 10px 14px; font-size: 14px; min-height: 38px; border-radius: 10px; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.btn svg { width: 17px; height: 17px; flex: none; }

/* the multiplier: the signature element */
.mx { display: inline-flex; align-items: baseline; line-height: 0.82; color: var(--acc); font-family: var(--f-display); font-weight: 800; font-stretch: 75%; letter-spacing: -0.045em; white-space: nowrap; font-variant-numeric: tabular-nums; }
.mx b, .mx i { flex: none; }
.mx b { font-weight: 800; }
.mx i { font-style: normal; font-size: 0.52em; margin-left: 0.12em; letter-spacing: 0; }
.mx.lo { color: var(--ink2); }
.mx.mega { font-size: clamp(110px, 15vw, 214px); }
.mx.xl { font-size: clamp(84px, 11vw, 150px); }
.mx.md { font-size: 64px; }
.mx.sm { font-size: 44px; }
.mx.xs { font-size: 30px; }
.spk { width: min(460px, 100%); display: grid; gap: 7px; font: 500 12px/1 var(--f-mono); color: var(--ink3); max-width: 460px; }
.spk > div { display: grid; grid-template-columns: 74px 1fr auto; align-items: center; gap: 10px; }
.spk i { display: block; height: 10px; border-radius: 3px; width: var(--w); min-width: 3px; background: var(--ink3); transform-origin: left; }
.spk .t i { background: var(--acc); }
.spk em { font-style: normal; color: var(--ink2); }
.spk .t em { color: var(--ink); }
@media (prefers-reduced-motion: no-preference) {
  .spk i { animation: grow 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) both; }
  .spk .t i { animation-delay: 0.15s; }
  @keyframes grow { from { transform: scaleX(0); } }
}

/* logos and avatars */
.av { width: 42px; height: 42px; border-radius: 12px; background: #e9ebf3; display: inline-grid; place-items: center; flex: none; overflow: hidden; }
.av img { width: 68%; height: 68%; object-fit: contain; }
.av.mono { background: var(--surf2); color: var(--ink2); font: 700 17px/1 var(--f-display); border: 1px solid var(--line2); }
.av.s { width: 30px; height: 30px; border-radius: 9px; font-size: 13px; }
.av.l { width: 56px; height: 56px; border-radius: 15px; }

/* chips */
.chips { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; padding: 2px 0; -webkit-overflow-scrolling: touch; }
.chips::-webkit-scrollbar { display: none; }
.chip { flex: none; display: inline-flex; gap: 7px; align-items: baseline; border: 1px solid var(--line2); background: transparent; color: var(--ink2); font: 600 14px/1 var(--f-body); padding: 10px 14px; border-radius: 999px; cursor: pointer; text-decoration: none; min-height: 40px; align-items: center; }
.chip small { font: 500 11px/1 var(--f-mono); color: var(--ink3); }
.chip:hover { border-color: var(--ink3); color: var(--ink); }
.chip[aria-pressed="true"], .chip.on { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chip[aria-pressed="true"] small, .chip.on small { color: #4a5068; }
.seg { display: inline-flex; background: var(--surf); border: 1px solid var(--line); border-radius: 12px; padding: 3px; gap: 2px; }
.seg button { background: none; border: 0; color: var(--ink2); font: 600 14px/1 var(--f-body); padding: 10px 16px; border-radius: 9px; cursor: pointer; min-height: 38px; }
.seg button[aria-pressed="true"], .seg button[aria-selected="true"] { background: var(--ink); color: var(--bg); }
.seg button[disabled] { opacity: 0.5; cursor: not-allowed; }

/* home hero */
.intro { padding: 36px 0 4px; }
.intro h1 { font-size: clamp(30px, 3.7vw, 54px); letter-spacing: -0.03em; line-height: 1.02; font-weight: 800; max-width: 26ch; }
.intro h1 span { color: var(--ink3); display: block; }
.intro h1 em { font-style: normal; color: var(--ink); }
.intro .cnt { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 18px 0 0; font: 500 13px/1.4 var(--f-mono); color: var(--ink3); }
.intro .cnt b { color: var(--ink); font-weight: 600; }
.hero { display: grid; gap: 22px; padding: 26px 0 52px; border-bottom: 1px solid var(--line); }
@media (min-width: 960px) { .hero { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 44px; align-items: start; } }
.hero .tag { display: inline-flex; align-items: center; gap: 10px; font: 600 12px/1 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--acc); margin-bottom: 18px; }
.hero .tag::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 0 0 var(--acc); }
@media (prefers-reduced-motion: no-preference) { .hero .tag::before { animation: ping 2.2s infinite; } @keyframes ping { 70% { box-shadow: 0 0 0 9px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } } }
.hero .mxl { display: grid; gap: 14px; justify-items: start; }
.hero .mxl small { font: 600 clamp(18px, 2vw, 24px)/1.1 var(--f-display); color: var(--ink); letter-spacing: -0.02em; }
.hero h2 { font-size: clamp(24px, 2.6vw, 34px); margin: 18px 0 10px; letter-spacing: -0.025em; }
.hero h2 a { text-decoration: none; }
.hero .by { display: flex; align-items: center; gap: 12px; margin: 0 0 18px; }
.hero .by div { display: grid; gap: 3px; min-width: 0; }
.hero .by b { color: var(--ink); font-weight: 650; }
.hero .by span { font-size: 13px; color: var(--ink3); }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.stage { position: relative; display: block; border-radius: var(--r); overflow: hidden; border: 1px solid var(--line2); background: var(--surf); box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.7); }
.stage img { display: block; width: 100%; height: auto; max-height: 640px; object-fit: contain; background: #1a1d29; filter: brightness(0.9) contrast(1.02); }
.stage .ph { aspect-ratio: 16/10; display: grid; place-items: center; color: var(--ink3); font: 500 13px var(--f-mono); padding: 20px; text-align: center; }
.hero .stage { transform: rotate(0.0001deg); }
@media (min-width: 960px) { .hero .stage { order: 2; } }
.statline { display: flex; flex-wrap: wrap; gap: 6px 18px; font: 500 13px/1.3 var(--f-mono); color: var(--ink3); margin: 0 0 4px; }
.statline b { color: var(--ink); font-weight: 600; }

/* wire (the X-style feed) */
.cols { display: grid; gap: 40px; padding: 48px 0 20px; }
@media (min-width: 1100px) { .cols { grid-template-columns: minmax(0, 700px) 320px; justify-content: space-between; align-items: start; } }
.cols > * { min-width: 0; }
.wire-h { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.wire-h h2 { font-size: clamp(28px, 3.4vw, 40px); letter-spacing: -0.03em; }
.wire-h h2 span { color: var(--ink3); }
.srch { margin: 0 0 12px; }
.bar { position: sticky; top: 62px; z-index: 20; background: color-mix(in oklab, var(--bg) 92%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 12px 0; border-bottom: 1px solid var(--line); display: flex; gap: 14px; align-items: center; }
.bar .chips { flex: 1; min-width: 0; }
.bar .seg { flex: none; }
.rows { margin: 0; padding: 0; list-style: none; }
.row { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding: 22px 0; border-bottom: 1px solid var(--line); position: relative; }
.row-h { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 8px; font-size: 14px; color: var(--ink3); }
.row-h b { color: var(--ink); font-weight: 700; font-size: 15px; }
.row-h .th { margin-left: auto; font: 500 11px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink3); border: 1px solid var(--line); border-radius: 999px; padding: 5px 8px; }
.row h3 { font: 700 clamp(20px, 2.1vw, 25px)/1.15 var(--f-display); letter-spacing: -0.02em; margin: 6px 0 12px; }
.row h3 a { text-decoration: none; }
.row h3 a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.row-m { display: grid; gap: 12px; }
@media (min-width: 640px) { .row-m { grid-template-columns: minmax(0, 1fr) 150px; align-items: end; } }
.row-img { display: block; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: #1a1d29; max-height: 330px; }
.row-img img { display: block; width: 100%; height: 100%; max-height: 330px; object-fit: cover; object-position: top; filter: brightness(0.88) contrast(1.02); transition: filter 0.2s; }
.row:hover .row-img img { filter: brightness(0.96); }
.row-s { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
@media (min-width: 640px) { .row-s { display: grid; gap: 4px; justify-items: start; align-content: end; } }
.row-s small { font: 500 12px/1.3 var(--f-mono); color: var(--ink3); }
.row-f { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; margin-top: 12px; font: 500 13px/1 var(--f-mono); color: var(--ink3); }
.row-f b { color: var(--ink2); font-weight: 500; }
.row-f .rm { color: var(--ink); }
.sv { position: relative; z-index: 2; display: inline-flex; align-items: center; gap: 7px; background: none; border: 0; color: var(--ink3); font: 600 13px/1 var(--f-body); padding: 8px 10px; margin: -8px -10px; cursor: pointer; border-radius: 8px; min-height: 36px; }
.sv svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linejoin: round; }
.sv:hover { color: var(--ink); }
.sv[aria-pressed="true"] { color: var(--acc); }
.sv[aria-pressed="true"] svg { fill: currentColor; }
.more { display: flex; justify-content: center; padding: 28px 0 8px; }
.empty { padding: 40px 0; color: var(--ink3); }
.rail { display: grid; gap: 22px; }
@media (min-width: 1100px) { .rail { position: sticky; top: 90px; } }
.rail h3 { font: 700 18px/1.2 var(--f-display); margin-bottom: 14px; }
.acc-l { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.acc-l li { display: grid; grid-template-columns: 30px 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.acc-l b { color: var(--ink); font-weight: 650; font-size: 15px; display: block; }
.acc-l small { color: var(--ink3); font: 500 12px/1.3 var(--f-mono); display: block; }
.acc-l .best { font: 700 18px/1 var(--f-display); color: var(--acc); letter-spacing: -0.03em; }
.acc-l .best.lo { color: var(--ink2); }
.rail-box { border: 1px solid var(--line); border-radius: var(--r); padding: 20px; background: var(--bg2); }
.rail-box p { font-size: 14.5px; margin-bottom: 14px; }
.rail-w .acc-l { display: flex; gap: 10px; overflow-x: auto; }

/* story strip */
.story { padding: 72px 0 10px; }
.story h2 { font-size: clamp(28px, 3.4vw, 44px); margin-bottom: 30px; max-width: 20ch; }
.story-g { display: grid; gap: 0; border-top: 1px solid var(--line2); }
@media (min-width: 900px) { .story-g { grid-template-columns: repeat(4, 1fr); } }
.st { display: grid; gap: 10px; padding: 26px 24px 28px 0; border-bottom: 1px solid var(--line); text-decoration: none; align-content: start; transition: background 0.15s; }
@media (min-width: 900px) { .st { border-bottom: 0; border-right: 1px solid var(--line); padding: 26px 24px 28px 24px; } .st:first-child { padding-left: 0; } .st:last-child { border-right: 0; } }
.st .n { font: 500 12px/1 var(--f-mono); color: var(--acc); letter-spacing: 0.1em; }
.st b { font: 800 30px/1 var(--f-display); letter-spacing: -0.03em; color: var(--ink); }
.st p { margin: 0; font-size: 15px; color: var(--ink2); max-width: 30ch; }
.st .go { font: 600 13px/1 var(--f-mono); color: var(--ink3); }
.st:hover .go { color: var(--acc); }

/* pricing teaser */
.teaser { margin: 72px 0 0; padding: 40px; border: 1px solid var(--line2); border-radius: 22px; background: linear-gradient(180deg, var(--bg2), var(--bg)); display: grid; gap: 28px; }
@media (min-width: 960px) { .teaser { grid-template-columns: 1fr 1.4fr; align-items: center; } }
.teaser h2 { font-size: clamp(28px, 3.2vw, 42px); }
.teaser ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; }
.teaser li { display: grid; grid-template-columns: 90px 1fr auto; gap: 14px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.teaser li:first-child { border-top: 1px solid var(--line); }
.teaser li b { font: 800 22px/1 var(--f-display); color: var(--ink); }
.teaser li span.pr { font: 600 14px/1 var(--f-mono); color: var(--ink); }
@media (max-width: 560px) { .teaser { padding: 24px 18px; } .teaser li { grid-template-columns: 70px 1fr; } .teaser li span.pr { grid-column: 2; } }

/* footer */
.foot { margin-top: 90px; border-top: 1px solid var(--line); padding: 40px 0 48px; }
.foot-in { display: grid; gap: 28px; }
@media (min-width: 900px) { .foot-in { grid-template-columns: 1.2fr 2fr; } }
.foot p { font-size: 14px; max-width: 54ch; color: var(--ink3); }
.foot nav { display: flex; flex-wrap: wrap; gap: 10px 26px; align-content: start; }
.foot nav a { text-decoration: none; font-weight: 600; font-size: 15px; color: var(--ink2); }
.foot nav a:hover { color: var(--ink); }
.foot p.fine { max-width: none; }
.foot .fine { font: 500 12px/1.6 var(--f-mono); color: var(--ink3); grid-column: 1 / -1; }

/* generic pages */
.page { padding: 56px 0 20px; }
.page h1 { font-size: clamp(38px, 5.4vw, 72px); letter-spacing: -0.04em; font-weight: 800; max-width: 16ch; }
.page .lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--ink2); max-width: 62ch; margin-top: 18px; }
.prose { max-width: 70ch; }
.prose h2 { font-size: clamp(24px, 2.6vw, 32px); margin: 52px 0 14px; scroll-margin-top: 84px; }
.prose h3 { font-size: 20px; margin: 30px 0 8px; }
.prose p, .prose li { color: var(--ink2); }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); }
.prose code, code.i { font: 500 0.9em var(--f-mono); background: var(--surf); border: 1px solid var(--line); padding: 2px 6px; border-radius: 6px; color: var(--ink); }
.draft { border: 1px solid var(--line2); border-left: 3px solid var(--acc); background: var(--bg2); border-radius: 10px; padding: 14px 18px; font-size: 15px; color: var(--ink); margin: 24px 0 0; max-width: 70ch; }
.note { font-size: 13.5px; color: var(--ink3); }
.worked { border: 1px solid var(--line2); border-radius: var(--r); padding: 26px; background: var(--bg2); margin: 24px 0; display: grid; gap: 18px; }
@media (min-width: 760px) { .worked { grid-template-columns: auto 1fr; align-items: center; gap: 34px; } }

/* notices and forms */
.notice { border: 1px solid var(--line2); background: var(--surf); border-radius: 12px; padding: 14px 16px; font-size: 14.5px; color: var(--ink2); display: none; }
.notice.show { display: block; }
.notice b { color: var(--ink); }
.notice code { font: 500 0.92em var(--f-mono); color: var(--ink); }
.auth { max-width: 440px; margin: 0 auto; padding: 64px 0 20px; }
.auth h1 { font-size: clamp(32px, 4.4vw, 46px); letter-spacing: -0.035em; margin-bottom: 10px; }
.auth .lead { margin: 0 0 28px; color: var(--ink2); }
.fld { display: grid; gap: 7px; margin-bottom: 16px; }
.fld label { font: 600 14px/1 var(--f-body); color: var(--ink); }
.fld input, .fld select, .fld textarea { background: var(--bg2); border: 1px solid var(--line2); color: var(--ink); border-radius: 12px; padding: 14px 14px; font: 400 16px/1.2 var(--f-body); width: 100%; min-height: 50px; }
.fld input::placeholder { color: var(--ink3); }
.fld input:focus-visible { outline: 2px solid var(--acc); outline-offset: 1px; border-color: transparent; }
.fld .hint { font-size: 13px; color: var(--ink3); }
.err { display: none; margin: 0 0 16px; padding: 12px 14px; border-radius: 10px; border: 1px solid color-mix(in oklab, var(--acc) 50%, var(--line)); background: var(--acc-soft); color: var(--ink); font-size: 14.5px; }
.err.show { display: block; }
.ok { display: none; margin: 0 0 16px; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line2); background: var(--surf); color: var(--ink); font-size: 14.5px; }
.ok.show { display: block; }
.alt { margin-top: 22px; font-size: 15px; color: var(--ink3); }
.alt a { color: var(--ink); font-weight: 600; }
.fld.pw { position: relative; }

/* chart page */
.cw { padding-top: 28px; padding-bottom: 20px; }
.crumbs { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 24px; font: 500 12px/1.4 var(--f-mono); color: var(--ink3); }
.crumbs li + li::before { content: "/"; margin-right: 6px; opacity: 0.5; }
.crumbs a { color: var(--ink2); text-decoration: none; }
.ch-head { display: grid; gap: 24px; padding-bottom: 28px; }
@media (min-width: 960px) { .ch-head { grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 56px; } }
.ch-head h1 { font-size: clamp(32px, 4.4vw, 58px); letter-spacing: -0.035em; font-weight: 800; margin: 12px 0 0; }
.ch-by { display: flex; gap: 12px; align-items: center; }
.ch-by div { display: grid; gap: 2px; min-width: 0; }
.ch-by b { color: var(--ink); font-weight: 650; font-size: 16px; }
.ch-by span { font-size: 13.5px; color: var(--ink3); }
.ch-x { display: grid; gap: 12px; justify-items: start; min-width: 280px; }
.ch-x .spk { width: 300px; max-width: 100%; }
.ch-x .cap { font: 600 20px/1.1 var(--f-display); color: var(--ink); letter-spacing: -0.02em; }
.ch-x .cap small { display: block; font: 500 12px/1.4 var(--f-mono); color: var(--ink3); margin-top: 6px; letter-spacing: 0; }
.tools { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin: 6px 0 16px; }
.tools .r { display: flex; gap: 10px; flex-wrap: wrap; }
.view { border: 1px solid var(--line2); border-radius: 18px; background: var(--bg2); padding: 14px; }
.view .stage { box-shadow: none; border: 0; background: transparent; }
.view .stage img { max-height: 78vh; margin: 0 auto; border-radius: 10px; }
.cite { font-size: 13.5px; color: var(--ink3); margin: 12px 4px 2px; }
.rmx { display: grid; gap: 18px; }
@media (min-width: 1000px) { .rmx { grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr); } }
.rmx-c { background: #fefefe; border-radius: 10px; overflow: hidden; min-height: 120px; display: grid; place-items: center; }
.rmx-c svg { display: block; width: 100%; height: auto; }
.rmx-e { display: grid; gap: 12px; align-content: start; max-height: 560px; overflow: auto; padding-right: 4px; }
.rmx-e table { width: 100%; border-collapse: collapse; font-size: 14px; }
.rmx-e th, .rmx-e td { padding: 4px 4px; text-align: left; font-weight: 500; vertical-align: middle; }
.rmx-e th { color: var(--ink3); font: 500 11px/1.2 var(--f-mono); }
.rmx-e th.rn { color: var(--ink2); font: 500 13px/1.3 var(--f-body); }
.rmx-e input { background: var(--surf); border: 1px solid var(--line2); color: var(--ink); border-radius: 8px; padding: 8px 8px; font: 500 14px/1 var(--f-mono); width: 100%; min-width: 62px; min-height: 36px; }
.rmx-e input.nm, .rmx-e #rt { font-family: var(--f-body); }
.rmx-e th.rn input { min-width: 128px; font-size: 13px; }
.sec { margin-top: 64px; }
.sec h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 18px; letter-spacing: -0.03em; scroll-margin-top: 84px; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (min-width: 900px) { .cards { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.card { border: 1px solid var(--line); background: var(--bg2); border-radius: 14px; padding: 18px 18px 16px; display: grid; gap: 8px; min-width: 0; }
.card span { font: 500 11px/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink3); }
.card b { font: 800 clamp(30px, 3.4vw, 42px)/1 var(--f-display); letter-spacing: -0.03em; color: var(--ink); }
.card small { color: var(--ink3); font-size: 13px; line-height: 1.4; }
.card.hi b { color: var(--acc); }
.why { display: grid; gap: 28px; }
@media (min-width: 900px) { .why { grid-template-columns: 1.2fr 1fr; gap: 56px; } }
.why .v { font: 600 clamp(20px, 2.2vw, 27px)/1.3 var(--f-display); color: var(--ink); letter-spacing: -0.02em; }
.why ul { padding-left: 1.1em; margin: 0; }
.why li { margin: 10px 0; color: var(--ink2); }
.lock { position: relative; }
.lock .fade { position: absolute; left: 0; right: 0; bottom: 0; height: 64%; background: linear-gradient(180deg, transparent, var(--bg) 78%); display: flex; align-items: flex-end; justify-content: center; padding-bottom: 18px; gap: 10px; flex-wrap: wrap; }
.tw { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
table.dt { border-collapse: collapse; width: 100%; font-size: 14px; }
table.dt th, table.dt td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.dt th { font: 500 11px/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink3); }
table.dt td.n { font-family: var(--f-mono); text-align: right; color: var(--ink); }
table.dt tr:last-child td { border-bottom: 0; }
pre.code { background: #07080c; border: 1px solid var(--line); border-radius: 14px; padding: 18px; overflow-x: auto; font: 500 13px/1.65 var(--f-mono); color: #d7dbea; margin: 0; }
pre.code .c { color: #7b839c; }
pre.code .k { color: #ff8a7d; }
.snip { position: relative; }
.snip .cp { position: absolute; top: 10px; right: 10px; z-index: 2; }
.tabs2 { display: flex; gap: 6px; margin-bottom: 12px; }
.rel { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; }
.rel li { display: grid; grid-template-columns: 112px minmax(0, 1fr) auto; gap: 16px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line); position: relative; }
.rel li:first-child { border-top: 1px solid var(--line); }
.rel img { width: 112px; height: 74px; object-fit: cover; object-position: top; border-radius: 10px; border: 1px solid var(--line); background: #1a1d29; filter: brightness(0.88); }
.rel b { display: block; color: var(--ink); font: 700 17px/1.25 var(--f-display); letter-spacing: -0.015em; }
.rel b a { text-decoration: none; }
.rel b a::after { content: ""; position: absolute; inset: 0; }
.rel small { color: var(--ink3); font: 500 12px/1.4 var(--f-mono); }
@media (max-width: 560px) { .rel li { grid-template-columns: 88px 1fr; } .rel img { width: 88px; height: 62px; } .rel .mx { display: none; } }

/* pricing */
.pl { display: grid; gap: 16px; margin-top: 36px; }
@media (min-width: 960px) { .pl { grid-template-columns: repeat(3, 1fr); align-items: stretch; } }
.plan { border: 1px solid var(--line2); border-radius: 20px; padding: 30px 28px; background: var(--bg2); display: flex; flex-direction: column; gap: 16px; position: relative; }
.plan.feat { border-color: var(--acc); background: linear-gradient(180deg, color-mix(in oklab, var(--acc) 9%, var(--bg2)), var(--bg2) 40%); }
.plan .flag { position: absolute; top: -12px; left: 28px; background: var(--acc); color: var(--acc-ink); font: 700 11px/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; }
.plan h2 { font-size: 30px; letter-spacing: -0.03em; }
.plan .for { font-size: 15px; color: var(--ink2); margin: 0; min-height: 3em; }
.plan .price { display: flex; align-items: baseline; gap: 8px; margin: 4px 0 2px; }
.plan .price b { font: 800 56px/1 var(--f-display); letter-spacing: -0.045em; color: var(--ink); }
.plan .price span { font: 500 14px/1.2 var(--f-mono); color: var(--ink3); }
.plan .sub { font: 500 13px/1.3 var(--f-mono); color: var(--ink3); min-height: 1.3em; margin: 0; }
.plan ul { list-style: none; margin: 8px 0 8px; padding: 0; display: grid; gap: 11px; flex: 1; }
.plan li { display: grid; grid-template-columns: 20px 1fr; gap: 10px; font-size: 15px; color: var(--ink); }
.plan li svg { width: 18px; height: 18px; margin-top: 2px; stroke: var(--acc); fill: none; stroke-width: 2.4; }
.plan li.dim { color: var(--ink3); }
.plan li.dim svg { stroke: var(--line2); }
.cmp { margin-top: 70px; }
.cmp table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 620px; }
.cmp th, .cmp td { padding: 14px 14px; border-bottom: 1px solid var(--line); text-align: left; }
.cmp thead th { font: 700 16px/1 var(--f-display); color: var(--ink); position: sticky; top: 0; background: var(--bg); }
.cmp td:first-child { color: var(--ink); font-weight: 600; width: 36%; }
.cmp td.y { color: var(--ink); }
.cmp td.n { color: var(--ink3); }
.faq { margin-top: 70px; max-width: 800px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font: 700 19px/1.3 var(--f-display); color: var(--ink); list-style: none; display: flex; justify-content: space-between; gap: 18px; letter-spacing: -0.015em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 500 22px/1 var(--f-mono); color: var(--ink3); }
.faq details[open] summary::after { content: "\2212"; color: var(--acc); }
.faq details p { margin: 12px 0 0; color: var(--ink2); max-width: 66ch; }
.build { margin-top: 70px; display: grid; gap: 30px; }
@media (min-width: 960px) { .build { grid-template-columns: 1fr 1fr; gap: 44px; } }
.build h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 14px; }
.build > div { min-width: 0; }

/* account */
.acct { display: grid; gap: 26px; padding-top: 12px; }
.panel { border: 1px solid var(--line2); border-radius: 18px; padding: 24px; background: var(--bg2); min-width: 0; }
.panel h2 { font-size: 24px; margin-bottom: 14px; letter-spacing: -0.02em; }
.meter { display: grid; gap: 8px; margin: 12px 0; }
.meter div.t { display: flex; justify-content: space-between; font: 500 13px/1 var(--f-mono); color: var(--ink2); }
.meter div.b { height: 8px; border-radius: 4px; background: var(--surf2); overflow: hidden; }
.meter div.b i { display: block; height: 100%; background: var(--acc); border-radius: 4px; }
.blist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.blist li { display: flex; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.blist li b { color: var(--ink); flex: 1; min-width: 120px; }
.blist li span { font: 500 13px var(--f-mono); color: var(--ink3); }
.row2 { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.keyshow { font: 500 14px/1.5 var(--f-mono); word-break: break-all; background: #07080c; border: 1px dashed var(--acc); border-radius: 12px; padding: 14px; color: var(--ink); margin: 12px 0; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 12px 18px; border-radius: 12px; font: 600 14px/1.3 var(--f-body); z-index: 90; max-width: calc(100vw - 32px); opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.toast.show { opacity: 1; }
.toast a { color: var(--bg); }

/* mobile */
@media (max-width: 960px) {
  .steps { display: none; }
  .menu-b { display: inline-flex; }
  .top-in { gap: 10px; }
  .steps.open { display: grid; position: absolute; left: 0; right: 0; top: 62px; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px var(--gut) 18px; margin: 0; }
  .steps.open a { padding: 14px 8px; font-size: 17px; border-radius: 10px; }
}
@media (max-width: 560px) {
  .top-in { height: 58px; }
  .tl.login, .top .svn { display: none; }
  .row { grid-template-columns: 34px minmax(0, 1fr); gap: 10px; }
  .row .av { width: 34px; height: 34px; border-radius: 10px; }
  .bar { top: 58px; }
  .intro { padding-top: 30px; }
  .panel { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }
[hidden] { display: none !important; }