/* thissohuang.com
   Layout: one long report. Left-aligned type on a 12-column grid; every chart sits in a hairline card shaped like a post.
   Colour jobs: ink counts posts, green counts likes and memes, blue counts replies, violet is image and pink is video. Dark only. */
:root {
  /* One theme: dark. */
  color-scheme: dark;
  --bg: #0b0d10;
  --card: #111419;
  --soft: #161a20;
  --ink: #e9ecee;
  --ink-2: #a2adb7;
  --ink-3: #74808b;
  --line: #242a31;
  --line-2: #343c45;
  --grid: #1b2026;
  --like: #76b900;
  --like-ink: #76b900;
  --like-wash: rgba(118, 185, 0, 0.16);
  --reply: #1d9bf0;
  --f-t: #9085e9;
  --f-i: #9085e9;
  --f-v: #f91880;
  --on-v: #ffffff;
  --mark: #e9ecee;
  --mark-wash: rgba(233, 236, 238, 0.07);
  --quiet: #55606b;
  --band: rgba(233, 236, 238, 0.04);
  --head: rgba(11, 13, 16, 0.8);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.5);

  --display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --body: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --r: 20px;
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.55 var(--body); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
a { color: inherit; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; text-wrap: balance; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--reply); outline-offset: 3px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }

.wrap { max-width: var(--max); margin-inline: auto; padding-left: max(24px, env(safe-area-inset-left, 0px)); padding-right: max(24px, env(safe-area-inset-right, 0px)); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 50; background: var(--ink); color: var(--bg); padding: 10px 14px; border-radius: 10px; }

/* Type roles */
.eyebrow { font: 500 12px/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); }
.muted { color: var(--ink-2); }
.small { font-size: 14px; line-height: 1.5; }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); }
.prose-w { max-width: 62ch; }

/* Header */
.top { position: sticky; top: 0; z-index: 30; background: var(--head); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 64px; }
.mark { font: 800 20px/1 var(--display); letter-spacing: -0.03em; text-decoration: none; white-space: nowrap; display: inline-flex; align-items: center; gap: 9px; }
.mark i { width: 11px; height: 11px; border-radius: 50%; background: var(--like); display: block; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { white-space: nowrap; font-size: 15px; font-weight: 500; text-decoration: none; color: var(--ink-2); padding: 8px 12px; border-radius: 999px; transition: color .15s, background .15s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); background: var(--soft); }
.top-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--line); background: transparent; border-radius: 999px; cursor: pointer; color: var(--ink-2); transition: color .15s, border-color .15s; }
.icon-btn:hover { color: var(--ink); border-color: var(--line-2); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0; height: 44px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--ink); font: 600 15px/1 var(--body); text-decoration: none; cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s, transform .15s; }
.btn:hover { background: var(--soft); }
.btn:active { transform: scale(0.98); }
.btn-ink { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-ink:hover { background: var(--ink); opacity: 0.88; }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }
.btn svg { flex: none; }

/* Hero */
.hero { padding-block: 72px 40px; display: grid; gap: 28px; }
.hero h1 { font-size: clamp(42px, 7.6vw, 104px); line-height: 0.96; letter-spacing: -0.03em; font-weight: 800; }
.hero h1 .ln { display: block; }
.hero h1 em { font-style: normal; color: var(--like-ink); }
.hero .lede { font-size: clamp(18px, 1.7vw, 21px); line-height: 1.5; color: var(--ink-2); max-width: 56ch; }
.hero-row { display: flex; flex-wrap: wrap; gap: 12px; }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.kpi { padding: 22px 24px 24px 0; display: grid; gap: 6px; align-content: start; }
.kpi + .kpi { padding-left: 24px; border-left: 1px solid var(--line); }
.kpi-v { font: 700 clamp(30px, 3.6vw, 46px)/1 var(--display); letter-spacing: -0.035em; }
.kpi-l { font-size: 14px; line-height: 1.4; color: var(--ink-2); }

/* Sections and cards */
.section { padding-block: 56px; display: grid; gap: 28px; }
.section-head { display: grid; gap: 12px; max-width: 760px; }
.section-head h2 { font-size: clamp(32px, 4.4vw, 54px); line-height: 1; letter-spacing: -0.03em; }
.section-head p { color: var(--ink-2); font-size: 18px; max-width: 60ch; }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.s12 { grid-column: span 12; } .s8 { grid-column: span 8; } .s7 { grid-column: span 7; } .s6 { grid-column: span 6; } .s5 { grid-column: span 5; } .s4 { grid-column: span 4; }
.stack { display: grid; gap: 20px; align-content: start; }
.stack.fill { display: flex; flex-direction: column; }
.stack.fill > :last-child { flex: 1; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 28px 24px; display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.card-head { display: grid; gap: 8px; }
.card-head h3 { font-size: clamp(21px, 2vw, 26px); line-height: 1.12; letter-spacing: -0.025em; }
.card-head p { font-size: 15px; line-height: 1.5; color: var(--ink-2); max-width: 64ch; }
.card-foot { font-size: 13px; line-height: 1.5; color: var(--ink-2); margin-top: auto; }
.chart { position: relative; min-width: 0; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--ink-2); align-items: center; }
.legend span { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.legend .note { white-space: normal; display: inline; }
.sw { width: 10px; height: 10px; border-radius: 3px; display: inline-block; flex: none; }
.sw.dot { border-radius: 50%; }
.sw.line { width: 16px; height: 2px; border-radius: 2px; }
.bg-t { background: var(--f-t); } .bg-i { background: var(--f-i); } .bg-v { background: var(--f-v); }
.bg-like { background: var(--like); } .bg-mark { background: var(--mark); } .bg-quiet { background: var(--quiet); } .bg-reply { background: var(--reply); }

/* Chart ink (SVG) */
.ax { font: 400 11px var(--mono); fill: var(--ink-3); }
.lbl { font: 500 12px var(--body); fill: var(--ink-2); }
.lbl-s { font: 600 12.5px var(--body); fill: var(--ink); }
.halo { paint-order: stroke; stroke: var(--card); stroke-width: 4px; stroke-linejoin: round; }
.gl { stroke: var(--grid); stroke-width: 1; }
.bl { stroke: var(--line-2); stroke-width: 1; }
.f-t { fill: var(--f-t); } .f-i { fill: var(--f-i); } .f-v { fill: var(--f-v); }
.f-like { fill: var(--like); } .f-mark { fill: var(--mark); } .f-quiet { fill: var(--quiet); } .f-reply { fill: var(--reply); } .f-band { fill: var(--band); }
.s-like { stroke: var(--like); } .s-mark { stroke: var(--mark); } .s-quiet { stroke: var(--quiet); } .s-card { stroke: var(--card); }
.wash-mark { fill: var(--mark-wash); } .wash-like { fill: var(--like-wash); }
.pt { stroke: var(--card); stroke-width: 2; transition: opacity .15s; cursor: pointer; }
.pt.flat { stroke: none; }
.pt.lite { stroke: none; fill-opacity: 0.5; cursor: pointer; }
.pt.lite.hot { fill-opacity: 1; stroke: var(--card); stroke-width: 2; }
.dim .pt.lite { opacity: 0.35; }
.dim .pt.lite.on { opacity: 1; fill-opacity: 1; stroke: var(--ink); stroke-width: 1.5; }
.dim .pt { opacity: 0.28; }
.dim .pt.on { opacity: 1; }
.in-lbl { font: 600 11px var(--body); fill: #fff; pointer-events: none; }
.in-lbl.dark { fill: var(--on-v); }
.xhair { stroke: var(--ink-3); stroke-width: 1; }

/* Tooltip */
.tip { position: fixed; z-index: 60; pointer-events: none; background: var(--ink); color: var(--bg); border-radius: 12px; padding: 10px 12px; font-size: 13px; line-height: 1.4; max-width: 280px; box-shadow: var(--shadow); display: grid; gap: 2px; }
.tip b { font-weight: 600; font-size: 14px; }
.tip span { opacity: 0.72; }
.tip .tv { opacity: 1; font-variant-numeric: tabular-nums; }

/* Stat tiles */
.tiles { display: grid; gap: 20px; }
.tile { background: var(--soft); border-radius: var(--r); padding: 22px 24px; display: grid; gap: 6px; align-content: start; }
.tile-v { font: 700 clamp(30px, 3.2vw, 42px)/1 var(--display); letter-spacing: -0.035em; }
.tile-l { font-size: 14px; line-height: 1.45; color: var(--ink-2); }
.tiles.row3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tiles.fill { grid-auto-rows: 1fr; }
.tiles.fill .tile { align-content: center; }

/* Ranked list (top posts, burn) */
.rank { display: grid; }
.rank a, .rank .rk { display: grid; grid-template-columns: 22px minmax(0, 1.25fr) minmax(0, 1fr) 54px; gap: 12px; align-items: center; padding: 9px 0; text-decoration: none; border-top: 1px solid var(--grid); }
.rank a:first-child, .rank .rk:first-child { border-top: 0; }
.rank a:hover .rk-t { text-decoration: underline; text-underline-offset: 3px; }
.rk-n { font: 400 12px var(--mono); color: var(--ink-3); }
.rk-t { font-size: 14.5px; font-weight: 600; line-height: 1.3; display: block; }
.rk-h { font-size: 12.5px; color: var(--ink-2); display: flex; gap: 6px; align-items: center; margin-top: 2px; }
.rk-bar { height: 12px; display: block; }
.rk-bar i { display: block; height: 100%; min-width: 2px; background: var(--like); border-radius: 0 4px 4px 0; }
.rk-bar.ink i { background: var(--mark); }
.rk-v { font-size: 13.5px; font-weight: 600; text-align: right; font-variant-numeric: tabular-nums; }

/* Segmented bars (format share) */
.seg-block { display: grid; gap: 8px; }
.seg-title { display: flex; justify-content: space-between; font-size: 14px; color: var(--ink-2); }
.seg { display: flex; gap: 2px; height: 28px; }
.seg i { display: flex; align-items: center; padding-left: 9px; border-radius: 4px; font: 600 12.5px/1 var(--body); font-style: normal; color: #fff; min-width: 0; overflow: visible; white-space: nowrap; }
.seg i.bg-v { color: var(--on-v); }
.med { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; border-top: 1px solid var(--line); padding-top: 18px; }
.med div { display: grid; gap: 3px; }
.med b { font: 700 24px/1 var(--display); letter-spacing: -0.03em; }
.med span { font-size: 13px; color: var(--ink-2); display: inline-flex; gap: 6px; align-items: center; }
.med-cap { font-size: 14px; color: var(--ink-2); border-top: 1px solid var(--line); padding-top: 16px; }
.med { border-top: 0; padding-top: 0; }

/* Meter list (themes) */
.meters { display: grid; }
.meters .mh, .meters .mr { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr) 62px; gap: 14px; align-items: center; }
.meters .mh { font-size: 12.5px; color: var(--ink-2); padding-bottom: 8px; }
.meters .mr { padding: 10px 0; border-top: 1px solid var(--grid); font-size: 14.5px; }
.mr-name { font-weight: 600; line-height: 1.3; }
.mr-bar { display: flex; align-items: center; gap: 8px; }
.mr-bar i { display: block; height: 12px; min-width: 2px; border-radius: 0 4px 4px 0; flex: none; }
.mr-bar span { font-size: 13px; font-variant-numeric: tabular-nums; color: var(--ink-2); }
.mr-per { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; font-size: 13.5px; }

/* Lessons */
.lessons { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.lesson { display: grid; gap: 10px; align-content: start; border-top: 2px solid var(--ink); padding-top: 18px; }
.lesson h3 { font-size: 21px; line-height: 1.15; }
.lesson p { font-size: 15px; line-height: 1.55; color: var(--ink-2); }

/* Footer */
.foot { border-top: 1px solid var(--line); margin-top: 48px; padding-block: 44px 64px; font-size: 14px; line-height: 1.6; color: var(--ink-2); }
.foot .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 48px; }
.foot b { color: var(--ink); font-weight: 600; display: block; margin-bottom: 6px; }
.foot p + p { margin-top: 10px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.foot a { text-underline-offset: 3px; }
.foot a:hover { color: var(--ink); }

/* Index page */
.page-head { padding-block: 56px 28px; display: grid; gap: 14px; }
.page-head h1 { font-size: clamp(38px, 6vw, 72px); line-height: 0.98; letter-spacing: -0.04em; font-weight: 800; }
.page-head p { color: var(--ink-2); font-size: 18px; max-width: 60ch; }
.filters { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; padding-block: 14px; border-block: 1px solid var(--line); position: sticky; top: 64px; background: var(--bg); z-index: 20; }
.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; font-size: 14px; font-weight: 500; color: var(--ink-2); cursor: pointer; display: inline-flex; align-items: center; gap: 7px; transition: background .15s, color .15s, border-color .15s; }
.pill:hover { color: var(--ink); background: var(--soft); }
.pill[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.field { height: 36px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--bg); padding: 0 14px; font-size: 14px; min-width: 0; }
.field-grow { flex: 1 1 160px; max-width: 230px; }
.filters .count { margin-left: auto; font-size: 14px; color: var(--ink-2); white-space: nowrap; }
.rows { display: grid; padding-bottom: 40px; }
.rowh, .row { display: grid; grid-template-columns: 34px minmax(0, 2.2fr) 150px 84px minmax(0, 1.3fr) 70px; gap: 16px; align-items: center; }
.rowh { font-size: 12.5px; color: var(--ink-2); padding: 14px 8px 10px; }
.row { width: 100%; text-align: left; background: transparent; border: 0; border-top: 1px solid var(--grid); padding: 12px 8px; cursor: pointer; border-radius: 0; transition: background .12s; }
.row:hover, .row[aria-expanded="true"] { background: var(--soft); }
.row-n { font: 400 12px var(--mono); color: var(--ink-3); }
.row-t { font-weight: 600; font-size: 15.5px; line-height: 1.3; display: block; }
.row-t.row-plain { font-weight: 500; }
.more-row { display: flex; justify-content: center; padding: 22px 0 6px; }
.row-h { font-size: 13px; color: var(--ink-2); display: block; margin-top: 2px; }
.row-when { font: 400 12.5px var(--mono); color: var(--ink-2); }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); white-space: nowrap; }
.row-likes { display: flex; align-items: center; gap: 10px; }
.row-likes i { display: block; height: 10px; min-width: 2px; background: var(--like); border-radius: 0 4px 4px 0; flex: none; }
.row-likes span { font-size: 13.5px; font-weight: 600; font-variant-numeric: tabular-nums; }
.row-r { font-size: 13.5px; font-variant-numeric: tabular-nums; color: var(--ink-2); text-align: right; }
.detail { border-top: 1px solid var(--grid); background: var(--soft); padding: 20px 8px 24px 58px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 420px); gap: 28px; align-items: start; }
.detail dl { margin: 0; display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 8px 16px; font-size: 14.5px; }
.detail dt { color: var(--ink-2); }
.detail dd { margin: 0; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.embed { border-radius: 16px; overflow: hidden; }
.embed { position: relative; }
.embed iframe { width: 100%; border: 0; display: block; color-scheme: light; min-height: 320px; position: relative; }
.embed-wait { position: absolute; inset: 0 0 auto 0; padding: 20px; font-size: 14px; color: var(--ink-2); border: 1px dashed var(--line-2); border-radius: 16px; }
.empty { padding: 48px 8px; color: var(--ink-2); }

/* Method page */
.prose { display: grid; gap: 56px; padding-bottom: 32px; }
.prose section { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 20px 56px; border-top: 1px solid var(--line); padding-top: 28px; }
.prose h2 { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.08; }
.prose .body { display: grid; gap: 16px; max-width: 68ch; }
.prose .body p, .prose .body li { color: var(--ink-2); }
.prose .body strong { color: var(--ink); font-weight: 600; }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.prose a { text-underline-offset: 3px; }
.bits { font: 500 13px/1.3 var(--mono); display: grid; gap: 10px; background: var(--soft); border-radius: 16px; padding: 20px; overflow-x: auto; }
.bits-row { display: flex; gap: 2px; min-width: 520px; }
.bits-row div { padding: 10px 12px; border-radius: 4px; color: #fff; display: grid; gap: 3px; }
.bits-row small { font-size: 11px; opacity: 0.85; }
.bits-a { flex: 41; background: var(--f-t); } .bits-b { flex: 10; background: var(--ink-3); } .bits-c { flex: 12; background: var(--ink-3); }
.steps { display: grid; gap: 6px; font: 400 13.5px/1.5 var(--mono); color: var(--ink-2); overflow-x: auto; }
.steps b { color: var(--ink); font-weight: 500; }
.sliders { display: grid; gap: 16px; }
.slider { display: grid; grid-template-columns: minmax(0, 1fr) 96px; gap: 6px 16px; align-items: center; font-size: 14.5px; }
.slider label { color: var(--ink); font-weight: 500; }
.slider output { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }
.slider input { grid-column: 1 / -1; width: 100%; accent-color: var(--like); }
.src-list { display: grid; }
.src-list a, .src-list div { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-top: 1px solid var(--grid); font-size: 15px; text-decoration: none; }
.src-list a:hover b { text-decoration: underline; text-underline-offset: 3px; }
.src-list b { font-weight: 600; color: var(--ink); }
.src-list span { color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap; }

.center { min-height: 70vh; display: grid; place-content: center; justify-items: start; gap: 16px; padding: 24px; max-width: 640px; margin-inline: auto; }
.center h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1; letter-spacing: -0.04em; }

/* Narrow screens */
@media (max-width: 980px) {
  .s8, .s7, .s6, .s5, .s4 { grid-column: span 12; }
  .lessons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .prose section { grid-template-columns: minmax(0, 1fr); }
  .rowh { display: none; }
  .row { grid-template-columns: 30px minmax(0, 1fr) 120px; row-gap: 6px; }
  .row-when, .row-fmt, .row-r { display: none; }
  .detail { grid-template-columns: minmax(0, 1fr); padding-left: 8px; }
}
@media (max-width: 420px) {
  .hide-xs { display: none !important; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .top .wrap { gap: 8px; height: 58px; }
  .nav a { padding: 8px 9px; font-size: 14px; }
  .hide-s { display: none !important; }
  .mark { font-size: 17px; }
  .hero { padding-block: 44px 28px; gap: 22px; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi { padding: 18px 16px 18px 0; }
  .kpi + .kpi { padding-left: 16px; }
  .kpi:nth-child(3) { padding-left: 0; border-left: 0; }
  .kpi:nth-child(n+3) { border-top: 1px solid var(--line); }
  .section { padding-block: 40px; gap: 22px; }
  .grid, .stack, .tiles { gap: 14px; }
  .card { padding: 20px 18px 18px; border-radius: 16px; }
  .tile { border-radius: 16px; padding: 18px; }
  .tiles.row3 { grid-template-columns: minmax(0, 1fr); }
  .rank a, .rank .rk { grid-template-columns: 18px minmax(0, 1fr) 64px 46px; gap: 10px; }
  .meters .mh, .meters .mr { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 10px; }
  .mr-per, .mh-per { display: none; }
  .lessons { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .foot .wrap { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .filters { top: 58px; }
  .filters .count { margin-left: 0; }
  .row { grid-template-columns: 26px minmax(0, 1fr) 96px; gap: 10px; }
}