/* DevInside v8 — design system
   Type: Inter (UI, headings), Source Serif 4 (reading), JetBrains Mono (code). Self-hosted, OFL.
   Colour: warm paper + ink, one accent (teal), one signal (amber) for motion and emphasis. */

@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("../fonts/inter-latin-opsz-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("../fonts/inter-latin-ext-opsz-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 200 900; font-display: swap; src: url("../fonts/source-serif-4-latin-opsz-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 200 900; font-display: swap; src: url("../fonts/source-serif-4-latin-ext-opsz-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 200 900; font-display: swap; src: url("../fonts/source-serif-4-latin-opsz-italic.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 200 900; font-display: swap; src: url("../fonts/source-serif-4-latin-ext-opsz-italic.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 100 800; font-display: swap; src: url("../fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 100 800; font-display: swap; src: url("../fonts/jetbrains-mono-latin-ext-wght-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

:root {
  --paper: #f8f7f3;
  --surface: #ffffff;
  --surface-2: #f0eee8;
  --surface-3: #e8e5dd;
  --ink: #0f1216;
  --ink-2: #2f343c;
  --muted: #646a74;
  --faint: #8c919a;
  --line: #e2dfd7;
  --line-2: #cfcbc0;
  --accent: #0b7a5e;
  --accent-ink: #06604a;
  --accent-soft: #e1f1ea;
  --signal: #e2590d;
  --signal-ink: #b5440a;
  --signal-soft: #fdeadc;
  --err: #c8243a;
  --err-soft: #fbe5e8;
  --ok: #23824a;
  --ok-soft: #e2f3e8;
  --warn: #b7791f;
  --warn-soft: #fbf1dc;
  --code-bg: #0e1116;
  --code-ink: #e6e3dc;
  --code-line: #232831;
  --shadow-1: 0 1px 2px rgba(15, 18, 22, .06), 0 1px 1px rgba(15, 18, 22, .04);
  --shadow-2: 0 10px 30px -12px rgba(15, 18, 22, .22), 0 2px 6px rgba(15, 18, 22, .06);
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
  --radius: 12px;
  --radius-sm: 8px;
  --wrap: 1200px;
  --measure: 690px;
  --wide: 900px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --paper: #0d1014;
  --surface: #14181e;
  --surface-2: #1a1f26;
  --surface-3: #222831;
  --ink: #ecebe6;
  --ink-2: #c9c8c2;
  --muted: #979ca5;
  --faint: #6f747d;
  --line: #262c35;
  --line-2: #363d48;
  --accent: #3cc6a0;
  --accent-ink: #6fdcbc;
  --accent-soft: #11302a;
  --signal: #ff8a4c;
  --signal-ink: #ffab7d;
  --signal-soft: #3a2316;
  --err: #ff6b7d;
  --err-soft: #3a1820;
  --ok: #52c785;
  --ok-soft: #12301f;
  --warn: #e6b450;
  --warn-soft: #33290f;
  --code-bg: #090b0f;
  --code-line: #1d222a;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-2: 0 18px 40px -16px rgba(0, 0, 0, .7);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1014; --surface: #14181e; --surface-2: #1a1f26; --surface-3: #222831; --ink: #ecebe6; --ink-2: #c9c8c2; --muted: #979ca5; --faint: #6f747d;
    --line: #262c35; --line-2: #363d48; --accent: #3cc6a0; --accent-ink: #6fdcbc; --accent-soft: #11302a; --signal: #ff8a4c; --signal-ink: #ffab7d; --signal-soft: #3a2316;
    --err: #ff6b7d; --err-soft: #3a1820; --ok: #52c785; --ok-soft: #12301f; --warn: #e6b450; --warn-soft: #33290f; --code-bg: #090b0f; --code-line: #1d222a;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .4); --shadow-2: 0 18px 40px -16px rgba(0, 0, 0, .7); color-scheme: dark;
  }
}

/* ------------------------------------------------------------------ base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 88px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--font-sans); font-optical-sizing: auto; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
img, svg, video { max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--accent-ink); }
::selection { background: color-mix(in srgb, var(--signal) 30%, transparent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
button { font: inherit; color: inherit; }
.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }
.sr-only, .dm-sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 8px; text-decoration: none; }
.skip:focus { top: 12px; }
.eyebrow { font: 600 12px/1.2 var(--font-sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.eyebrow a { text-decoration: none; color: var(--accent-ink); }
.kicker-dot::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--signal); margin-right: 9px; vertical-align: 1px; }

/* ------------------------------------------------------------------ buttons & links */
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 46px; padding: 0 20px; border-radius: 999px; border: 1px solid transparent; font: 600 15px/1 var(--font-sans); text-decoration: none; cursor: pointer; transition: transform 160ms var(--ease-out), background-color 160ms ease, border-color 160ms ease, color 160ms ease; }
.btn:active { transform: scale(.97); }
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--accent-ink); color: #fff; }
.btn--ghost { border-color: var(--line-2); background: transparent; color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn svg { width: 16px; height: 16px; transition: transform 200ms var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }
.text-link { font: 600 15px/1.3 var(--font-sans); color: var(--accent-ink); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "→"; transition: transform 200ms var(--ease-out); }
.text-link:hover::after { transform: translateX(4px); }

/* ------------------------------------------------------------------ header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px); border-bottom: 1px solid transparent; transition: border-color 200ms ease; }
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: baseline; gap: 0; font: 760 21px/1 var(--font-sans); letter-spacing: -.035em; color: var(--ink); text-decoration: none; }
.brand b { color: var(--signal); font-weight: 800; }
.brand:hover { color: var(--ink); }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a, .nav button.nav-link { font: 500 14.5px/1 var(--font-sans); color: var(--ink-2); text-decoration: none; padding: 10px 12px; border-radius: 8px; background: none; border: 0; cursor: pointer; transition: background-color 150ms ease, color 150ms ease; }
.nav a:hover, .nav button.nav-link:hover { background: var(--surface-2); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
.nav a.btn { min-height: 38px; padding: 0 16px; font-size: 14px; margin-left: 8px; color: var(--paper); background: var(--ink); border-radius: 999px; }
.nav a.btn:hover { color: #fff; background: var(--accent-ink); }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; transition: background-color 150ms ease; }
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn svg { width: 19px; height: 19px; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .theme-toggle .i-sun { display: block; } :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; } }
.menu-toggle { display: none; }
.read-progress { position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%; background: var(--signal); transform-origin: 0 50%; transform: scaleX(var(--p, 0)); pointer-events: none; }
@media (max-width: 920px) {
  .menu-toggle { display: inline-grid; margin-left: auto; }
  .nav { position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px var(--gutter) 24px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-2); transform: translateY(-8px); opacity: 0; visibility: hidden; transition: transform 220ms var(--ease-out), opacity 180ms ease, visibility 0s linear 220ms; }
  .nav.is-open { transform: none; opacity: 1; visibility: visible; transition: transform 260ms var(--ease-out), opacity 200ms ease; }
  .nav a, .nav button.nav-link { padding: 14px 12px; font-size: 17px; }
  .nav .btn { margin: 10px 0 0; justify-content: center; min-height: 48px; font-size: 16px; }
  .nav .nav-tools { display: flex; gap: 8px; padding-top: 8px; }
}
.nav-tools { display: flex; align-items: center; gap: 2px; margin-left: 6px; }

/* ------------------------------------------------------------------ footer */
.site-footer { margin-top: 120px; border-top: 1px solid var(--line); background: var(--surface); }
.site-footer .wrap { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; padding: 64px 0 40px; }
.site-footer h2 { font: 600 13px/1 var(--font-sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 6px 0 18px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer a { text-decoration: none; color: var(--ink-2); font-size: 15px; }
.site-footer a:hover { color: var(--accent-ink); }
.site-footer p { color: var(--muted); font-size: 15px; max-width: 34ch; margin: 14px 0 0; }
.footer-base { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; padding-top: 28px; border-top: 1px solid var(--line); color: var(--faint); font-size: 13.5px; }
.footer-base button { background: none; border: 0; padding: 0; color: var(--faint); cursor: pointer; font-size: 13.5px; text-decoration: underline; text-underline-offset: .2em; }
@media (max-width: 820px) { .site-footer .wrap { grid-template-columns: 1fr 1fr; } .site-footer .footer-brand { grid-column: 1 / -1; } }

/* ------------------------------------------------------------------ home */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(48px, 7vw, 88px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.hero h1 { font: 720 clamp(2.6rem, 1.4rem + 4.4vw, 4.9rem)/1.02 var(--font-sans); letter-spacing: -.045em; margin: 0 0 26px; text-wrap: balance; }
.hero h1 em { font-style: normal; color: var(--accent-ink); }
.hero .lede { font: 400 clamp(1.12rem, 1rem + .45vw, 1.35rem)/1.55 var(--font-serif); color: var(--ink-2); max-width: 40ch; margin: 0 0 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 28px; margin: 40px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 14px; }
.hero-proof li { display: flex; align-items: center; gap: 10px; }
.hero-proof b { color: var(--ink); font-weight: 650; }
.hero-visual { position: relative; aspect-ratio: 1 / 1; border-radius: 22px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-2); overflow: hidden; }
.hero-visual svg { width: 100%; height: 100%; display: block; }
.hero-visual { aspect-ratio: 520 / 440; }
.hv text { font-family: var(--font-sans); font-size: 14.5px; font-weight: 600; fill: var(--ink); text-anchor: middle; }
.hv .hv-sub { font: 400 11.5px var(--font-mono); fill: var(--muted); }
.hv-dot { fill: var(--line-2); }
.hv-wire { fill: none; stroke: var(--line-2); stroke-width: 2; stroke-dasharray: 4 6; }
.hv-node rect { fill: var(--surface); stroke: var(--line-2); stroke-width: 1.5; }
.hv-node--accent rect { fill: var(--accent-soft); stroke: var(--accent); }
.hv-node--accent text, .hv .hv-node--accent .hv-sub { fill: var(--accent-ink); }
.hv-node .hv-pulse { fill: var(--signal-soft); stroke: var(--signal); stroke-width: 2; }
.hv-token { fill: var(--signal); stroke: var(--surface); stroke-width: 2.5; }
.hv-token--accent { fill: var(--accent); }
.hv-glow { fill: var(--signal); opacity: .4; }
.hv .hv-cap { font: 500 11px var(--font-mono); letter-spacing: .08em; fill: var(--muted); text-anchor: start; }
.hv .hv-metric { font: 600 11.5px var(--font-mono); fill: var(--ink); text-anchor: end; }
.hv-track { fill: var(--surface-2); }
.hv-span--ink { fill: var(--ink); opacity: .85; } .hv-span--accent { fill: var(--accent); } .hv-span--signal { fill: var(--signal); }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } .hero-visual { max-width: 560px; } }

.section { padding: clamp(48px, 7vw, 96px) 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 18px 40px; margin-bottom: 40px; }
.section-head h2 { font: 700 clamp(1.8rem, 1.3rem + 1.6vw, 2.7rem)/1.08 var(--font-sans); letter-spacing: -.035em; margin: 0; max-width: 22ch; text-wrap: balance; }
.section-head p { margin: 12px 0 0; color: var(--muted); max-width: 56ch; font-size: 17px; }

.topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.topic-card { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: var(--ink); transition: transform 220ms var(--ease-out), border-color 200ms ease, box-shadow 220ms ease; }
.topic-card:hover { transform: translateY(-3px); border-color: var(--line-2); box-shadow: var(--shadow-2); color: var(--ink); }
.topic-card .ti { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-ink); }
.topic-card .ti svg { width: 22px; height: 22px; }
.topic-card h3 { font: 650 19px/1.25 var(--font-sans); letter-spacing: -.015em; margin: 8px 0 0; }
.topic-card p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.5; }
.topic-card .count { margin-top: auto; padding-top: 12px; font: 500 13px/1 var(--font-mono); color: var(--faint); }
@media (max-width: 900px) { .topic-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .topic-grid { grid-template-columns: 1fr; } }

/* cards */
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 28px; }
@media (max-width: 960px) { .post-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .post-grid { grid-template-columns: 1fr; } }
.card { display: flex; flex-direction: column; gap: 12px; text-decoration: none; color: var(--ink); }
.card-media { aspect-ratio: 3 / 2; border-radius: var(--radius); overflow: hidden; background: var(--surface-2); border: 1px solid var(--line); }
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 600ms var(--ease-out); }
.card:hover .card-media img { transform: scale(1.03); }
.card-meta { display: flex; gap: 10px; align-items: center; font: 500 13px/1.2 var(--font-sans); color: var(--muted); }
.card-meta .topic { color: var(--accent-ink); font-weight: 600; }
.card h3 { font: 650 20px/1.25 var(--font-sans); letter-spacing: -.02em; margin: 0; text-wrap: balance; }
.card:hover h3 { color: var(--accent-ink); }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.feature { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: center; text-decoration: none; color: var(--ink); padding: 0 0 8px; }
.feature .card-media { aspect-ratio: 16 / 10; }
.feature h3 { font: 720 clamp(1.7rem, 1.2rem + 1.5vw, 2.5rem)/1.1 var(--font-sans); letter-spacing: -.035em; margin: 10px 0 16px; text-wrap: balance; }
.feature p { font: 400 18px/1.6 var(--font-serif); color: var(--ink-2); margin: 0 0 20px; }
.feature:hover h3 { color: var(--accent-ink); }
.feature p.eyebrow { font: 600 12px/1.4 var(--font-sans); color: var(--muted); margin: 0; }
@media (max-width: 860px) { .feature { grid-template-columns: 1fr; } }

.row-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.row-list li { border-bottom: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 130px minmax(0, 1fr) auto; gap: 24px; align-items: baseline; padding: 20px 4px; text-decoration: none; color: var(--ink); transition: background-color 160ms ease; }
.row:hover { background: color-mix(in srgb, var(--surface-2) 60%, transparent); color: var(--ink); }
.row time, .row .topic { font: 500 13px/1.3 var(--font-sans); color: var(--muted); }
.row h3 { font: 620 18px/1.35 var(--font-sans); letter-spacing: -.012em; margin: 0; }
.row:hover h3 { color: var(--accent-ink); }
.row p { margin: 6px 0 0; font-size: 15px; color: var(--muted); line-height: 1.5; }
.row .topic { text-align: right; white-space: nowrap; }
@media (max-width: 720px) { .row { grid-template-columns: 1fr; gap: 6px; } .row .topic { text-align: left; } }

.series-band { border-radius: 20px; background: var(--ink); color: var(--paper); padding: clamp(28px, 5vw, 56px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 40px; align-items: center; }
.series-band .eyebrow { color: color-mix(in srgb, var(--paper) 60%, transparent); }
.series-band h2 { font: 720 clamp(1.7rem, 1.2rem + 1.4vw, 2.4rem)/1.1 var(--font-sans); letter-spacing: -.03em; margin: 0 0 14px; }
.series-band p { color: color-mix(in srgb, var(--paper) 75%, transparent); margin: 0 0 24px; font-size: 17px; }
.series-band ol { margin: 0; padding: 0; list-style: none; counter-reset: s; display: grid; gap: 2px; }
.series-band ol a { counter-increment: s; display: flex; gap: 16px; align-items: baseline; padding: 12px 14px; border-radius: 10px; color: var(--paper); text-decoration: none; font: 500 15.5px/1.35 var(--font-sans); }
.series-band ol a::before { content: counter(s, decimal-leading-zero); font: 500 13px/1 var(--font-mono); color: var(--signal); }
.series-band ol a:hover { background: rgba(255, 255, 255, .07); color: #fff; }
.series-band .btn--primary { background: var(--paper); color: var(--ink); }
.series-band .btn--primary:hover { background: var(--signal); color: #111; }
@media (max-width: 860px) { .series-band { grid-template-columns: 1fr; } }

.offer-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.offer-card { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; gap: 12px; }
.offer-card .n { font: 500 13px/1 var(--font-mono); color: var(--signal-ink); }
.offer-card h3 { font: 650 20px/1.25 var(--font-sans); letter-spacing: -.02em; margin: 0; }
.offer-card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.offer-card .text-link { margin-top: auto; padding-top: 8px; }
@media (max-width: 860px) { .offer-strip { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------------ archive / tag */
.archive-head { padding: clamp(48px, 7vw, 88px) 0 36px; }
.archive-head h1 { font: 720 clamp(2.3rem, 1.5rem + 3vw, 3.8rem)/1.05 var(--font-sans); letter-spacing: -.04em; margin: 0 0 16px; text-wrap: balance; }
.archive-head p { font: 400 19px/1.55 var(--font-serif); color: var(--ink-2); max-width: 60ch; margin: 0; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 32px 0 28px; }
.chip { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--surface); font: 500 14px/1 var(--font-sans); color: var(--ink-2); text-decoration: none; cursor: pointer; transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease, transform 160ms var(--ease-out); }
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip:active { transform: scale(.97); }
.chip[aria-pressed="true"], .chip.is-active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.chip small { font: 500 12px/1 var(--font-mono); opacity: .6; }
.search-field { flex: 1 1 260px; max-width: 380px; margin-left: auto; position: relative; }
.search-field input { width: 100%; min-height: 42px; padding: 0 14px 0 40px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--surface); color: var(--ink); font: 400 15px/1 var(--font-sans); }
.search-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search-field svg { position: absolute; left: 13px; top: 50%; width: 17px; height: 17px; transform: translateY(-50%); color: var(--faint); }
.empty-note { padding: 40px 0; color: var(--muted); }
.pagination { display: flex; justify-content: space-between; align-items: center; margin: 48px 0 0; font: 500 15px/1 var(--font-sans); color: var(--muted); }
.pagination a { text-decoration: none; color: var(--accent-ink); }

/* ------------------------------------------------------------------ article */
.post-head { padding: clamp(40px, 6vw, 80px) 0 0; }
.post-head .inner { max-width: 860px; margin-inline: auto; text-align: left; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font: 500 14px/1 var(--font-sans); color: var(--muted); margin-bottom: 26px; }
.crumbs a { color: var(--accent-ink); text-decoration: none; font-weight: 600; }
.crumbs .sep { color: var(--line-2); }
.post-head h1 { font: 740 clamp(2.2rem, 1.35rem + 3.2vw, 3.85rem)/1.06 var(--font-sans); letter-spacing: -.04em; margin: 0 0 22px; text-wrap: balance; }
.post-head .deck { font: 400 clamp(1.15rem, 1.05rem + .45vw, 1.42rem)/1.5 var(--font-serif); color: var(--ink-2); margin: 0 0 30px; max-width: 46ch; text-wrap: pretty; }
.byline { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font: 500 14px/1.3 var(--font-sans); color: var(--muted); }
.byline .who { display: flex; align-items: center; gap: 12px; color: var(--ink); font-weight: 600; text-decoration: none; }
.byline .avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: var(--paper); font: 700 13px/1 var(--font-sans); letter-spacing: .02em; overflow: hidden; }
.byline .avatar img { width: 100%; height: 100%; object-fit: cover; }
.byline .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--line-2); }
.byline .share { margin-left: auto; display: flex; gap: 4px; }
.post-cover { max-width: 1120px; margin: 40px auto 0; }
.post-cover img { width: 100%; height: auto; display: block; border-radius: 18px; border: 1px solid var(--line); aspect-ratio: 3 / 2; object-fit: cover; }
.post-cover figcaption { font-size: 13.5px; color: var(--muted); margin-top: 10px; text-align: center; }

.post-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, var(--measure)) minmax(0, 1fr); column-gap: 40px; margin-top: clamp(40px, 6vw, 72px); }
.post-body > .prose { grid-column: 2; }
.toc { grid-column: 3; grid-row: 1; justify-self: end; width: 200px; z-index: 0; position: sticky; top: 100px; align-self: start; max-height: calc(100vh - 140px); overflow: auto; padding-left: 4px; font: 500 13.5px/1.4 var(--font-sans); }
.toc .eyebrow { margin-bottom: 12px; font-size: 11px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 6px 0 6px 14px; margin-left: -1px; border-left: 2px solid transparent; color: var(--muted); text-decoration: none; transition: color 150ms ease, border-color 150ms ease; }
.toc a:hover { color: var(--ink); }
.toc a.is-active { color: var(--ink); border-left-color: var(--signal); }
@media (max-width: 1399px) { .toc { display: none !important; } }
.prose > .dm { position: relative; z-index: 1; }

/* prose */
.prose { font: 400 1.1875rem/1.72 var(--font-serif); color: var(--ink); font-optical-sizing: auto; }
@media (max-width: 640px) { .prose { font-size: 1.0625rem; line-height: 1.68; } }
.prose > * { margin-block: 0 1.15em; }
.prose > .kg-card, .prose > div { margin-block: 0; }
.prose p { text-wrap: pretty; hanging-punctuation: first; }
.prose h2 { font: 700 clamp(1.55rem, 1.25rem + .95vw, 2.05rem)/1.18 var(--font-sans); letter-spacing: -.028em; margin: 2.3em 0 .7em; text-wrap: balance; scroll-margin-top: 96px; }
.prose h3 { font: 650 1.3rem/1.3 var(--font-sans); letter-spacing: -.015em; margin: 1.9em 0 .6em; scroll-margin-top: 96px; }
.prose h4 { font: 650 1.05rem/1.35 var(--font-sans); margin: 1.6em 0 .5em; }
.prose h2 + h3 { margin-top: .8em; }
.prose a { color: var(--accent-ink); text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.prose a:hover { text-decoration-color: currentColor; }
.prose strong { font-weight: 650; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: .35em 0; padding-left: .2em; }
.prose li::marker { color: var(--muted); font-family: var(--font-sans); font-size: .9em; }
.prose blockquote { margin: 1.8em 0; padding: .2em 0 .2em 1.2em; border-left: 3px solid var(--signal); font-style: italic; font-size: 1.12em; color: var(--ink-2); }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 3em 0; }
.prose img { border-radius: var(--radius); }
.prose figure { margin: 2em 0; }
.prose figcaption { font: 400 14px/1.5 var(--font-sans); color: var(--muted); margin-top: 10px; }
.prose :not(pre) > code { font: 500 .84em/1 var(--font-mono); background: var(--surface-2); border: 1px solid var(--line); padding: .14em .38em; border-radius: 6px; color: var(--ink); white-space: normal; overflow-wrap: anywhere; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.prose a code { color: inherit; }
.prose table { width: 100%; border-collapse: collapse; font: 400 15px/1.45 var(--font-sans); margin: 1.8em 0; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose thead th { font-weight: 650; color: var(--ink); border-bottom: 1.5px solid var(--ink); white-space: nowrap; }
.prose tbody tr:hover { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }
.prose td code { white-space: normal; }

/* wide breakout for figures */
.prose > .dm, .prose > .wide, .prose > .kg-width-wide, .prose > figure.wide, .prose .kg-card.kg-width-wide { width: min(var(--wide), 100vw - 2 * var(--gutter)); margin-left: 50%; transform: translateX(-50%); }
.prose > .kg-width-full { width: 100vw; margin-left: 50%; transform: translateX(-50%); }

/* code blocks */
.prose pre, pre.code { position: relative; font: 400 14.5px/1.65 var(--font-mono); background: var(--code-bg); color: var(--code-ink); border-radius: var(--radius); padding: 20px 22px; overflow-x: auto; margin: 1.8em 0; border: 1px solid var(--code-line); tab-size: 4; -webkit-font-smoothing: auto; }
.prose pre code { font: inherit; background: none; border: 0; padding: 0; color: inherit; white-space: pre; }
@media (max-width: 640px) { .prose pre { font-size: 13px; padding: 16px; margin-inline: calc(-1 * var(--gutter) + 4px); border-radius: 8px; } }
.code-wrap { position: relative; }
.code-wrap .code-tools { position: absolute; top: 8px; right: 8px; display: flex; gap: 6px; align-items: center; z-index: 2; opacity: 0; transition: opacity 160ms ease; }
.code-wrap:hover .code-tools, .code-wrap:focus-within .code-tools { opacity: 1; }
@media (hover: none) { .code-wrap .code-tools { opacity: 1; } .code-wrap pre { padding-top: 46px; } }
.code-lang { font: 500 11px/1 var(--font-mono); text-transform: uppercase; letter-spacing: .08em; color: #8b93a1; padding: 6px 8px; }
.code-copy { font: 500 12px/1 var(--font-sans); color: #c9cfd8; background: #1c222b; border: 1px solid #2b323d; border-radius: 6px; padding: 7px 10px; cursor: pointer; }
.code-copy:hover { background: #26303b; color: #fff; }
.code-copy.is-done { color: #7ee2b8; }
/* Prism palette (dark, calm) */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: #7d8796; font-style: italic; }
.token.punctuation { color: #aab2bf; }
.token.keyword, .token.builtin, .token.important, .token.atrule, .token.rule { color: #ff9e64; }
.token.class-name, .token.type, .token.namespace, .token.maybe-class-name { color: #7dd3fc; }
.token.function, .token.method { color: #a5e8c8; }
.token.string, .token.char, .token.attr-value, .token.regex, .token.interpolation-string { color: #e5c07b; }
.token.number, .token.boolean, .token.constant, .token.symbol { color: #f4a8c6; }
.token.operator, .token.entity, .token.url { color: #d6dbe2; }
.token.property, .token.tag, .token.attr-name, .token.selector { color: #93c5fd; }
.token.variable, .token.parameter { color: #e6e3dc; }
.token.deleted { color: #ff8b8b; } .token.inserted { color: #9be59b; }

/* editorial components authored in posts */
.callout { --c: var(--accent); --cs: var(--accent-soft); position: relative; margin: 2em 0; padding: 20px 22px 20px 22px; border-radius: var(--radius); background: var(--cs); border: 1px solid color-mix(in srgb, var(--c) 22%, transparent); font-size: .95em; }
.callout > :last-child { margin-bottom: 0; }
.callout > :first-child { margin-top: 0; }
.callout::before { content: attr(data-label); display: block; font: 700 11.5px/1 var(--font-sans); letter-spacing: .12em; text-transform: uppercase; color: var(--c); margin-bottom: 10px; }
.callout[data-kind="warning"], .callout[data-kind="pitfall"] { --c: var(--signal-ink); --cs: var(--signal-soft); }
.callout[data-kind="danger"] { --c: var(--err); --cs: var(--err-soft); }
.callout[data-kind="key"] { --c: var(--ink); --cs: var(--surface); border-color: var(--line-2); box-shadow: var(--shadow-1); }
.callout:not([data-label])::before { content: "Note"; }
.callout[data-kind="warning"]:not([data-label])::before { content: "Watch out"; }
.callout[data-kind="pitfall"]:not([data-label])::before { content: "Common mistake"; }
.callout[data-kind="key"]:not([data-label])::before { content: "Key idea"; }
.tldr { margin: 0 0 2.4em; padding: 24px 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-1); font: 400 16.5px/1.6 var(--font-sans); }
.tldr::before { content: "In short"; display: block; font: 700 11.5px/1 var(--font-sans); letter-spacing: .12em; text-transform: uppercase; color: var(--signal-ink); margin-bottom: 12px; }
.tldr ul { margin: 0; padding-left: 1.1em; }
.tldr li { margin: .4em 0; }
.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; margin: 2em 0; font: 400 15.5px/1.55 var(--font-sans); }
.compare > div { min-width: 0; border-radius: var(--radius); padding: 18px 20px; border: 1px solid var(--line); background: var(--surface); }
.prose .compare pre { margin-inline: 0; }
.compare > div > :last-child { margin-bottom: 0; }
.compare h4 { margin: 0 0 10px; font: 700 12px/1 var(--font-sans); letter-spacing: .1em; text-transform: uppercase; }
.compare .bad h4 { color: var(--err); } .compare .good h4 { color: var(--ok); }
.compare .bad { border-top: 3px solid var(--err); } .compare .good { border-top: 3px solid var(--ok); }
.compare pre { font-size: 13px; margin: 10px 0 0; padding: 14px; }
@media (max-width: 640px) { .compare { grid-template-columns: minmax(0, 1fr); } }
.prose > *, .post-body > .prose { min-width: 0; }
.checklist { list-style: none; padding: 0 !important; }
.checklist li { position: relative; padding-left: 1.9em !important; }
.checklist li::before { content: ""; position: absolute; left: 0; top: .42em; width: 1.05em; height: 1.05em; border-radius: 5px; background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%230b7a5e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 80% no-repeat; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; font: 400 15.5px/1.5 var(--font-sans); margin: 1.6em 0; }
.kv dt { font-weight: 650; color: var(--ink); } .kv dd { margin: 0; color: var(--ink-2); }
.footnote-sources { font: 400 14.5px/1.55 var(--font-sans); color: var(--muted); border-top: 1px solid var(--line); padding-top: 20px; margin-top: 3em; }
.footnote-sources h2 { font: 650 15px/1 var(--font-sans) !important; letter-spacing: 0 !important; margin: 0 0 12px !important; color: var(--ink); }
.footnote-sources ol { padding-left: 1.2em; }

/* Ghost cards */
.kg-image-card img { margin-inline: auto; display: block; }
.kg-bookmark-card a { display: flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); background: var(--surface); }
.kg-bookmark-content { padding: 18px; font-family: var(--font-sans); }
.kg-bookmark-title { font-weight: 650; }
.kg-bookmark-description { color: var(--muted); font-size: 14px; margin-top: 6px; }
.kg-bookmark-thumbnail { flex: 0 0 180px; } .kg-bookmark-thumbnail img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
.kg-bookmark-icon { width: 18px; height: 18px; } .kg-bookmark-metadata { font-size: 13px; color: var(--muted); margin-top: 10px; display: flex; gap: 8px; align-items: center; }

/* article end */
.post-end { grid-column: 2; margin-top: 56px; }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.author-card { display: grid; grid-template-columns: 64px 1fr; gap: 20px; padding: 26px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.author-card .avatar { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: var(--paper); font: 700 20px/1 var(--font-sans); overflow: hidden; }
.author-card .avatar img { width: 100%; height: 100%; object-fit: cover; }
.author-card h2 { font: 700 18px/1.2 var(--font-sans); margin: 4px 0 6px; letter-spacing: -.01em; }
.author-card p { margin: 0 0 12px; color: var(--ink-2); font-size: 15.5px; line-height: 1.55; }
.author-card .links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.cta-panel { margin-top: 18px; padding: 26px; border-radius: 16px; background: var(--ink); color: var(--paper); display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; justify-content: space-between; }
.cta-panel h2 { font: 700 19px/1.3 var(--font-sans); margin: 0 0 6px; letter-spacing: -.01em; }
.cta-panel p { margin: 0; color: color-mix(in srgb, var(--paper) 72%, transparent); font-size: 15px; max-width: 46ch; }
.cta-panel .btn--primary { background: var(--paper); color: var(--ink); }
.cta-panel .btn--primary:hover { background: var(--signal); color: #111; }
.related { margin-top: 96px; }
.related h2 { font: 700 24px/1.2 var(--font-sans); letter-spacing: -.025em; margin: 0 0 28px; }

/* legacy markup (pre-v8 content) */
.editorial-meta, .v7-source-download, .reader-tools { display: none !important; }
.v7-related { border-top: 1px solid var(--line); margin-top: 3em; padding-top: 1.5em; font-family: var(--font-sans); font-size: 16px; }
.v7-related h2 { font-size: 1.15rem !important; margin-top: 0 !important; }
iframe.explainer-frame { width: min(var(--wide), 100vw - 2 * var(--gutter)); margin-left: 50%; transform: translateX(-50%); border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }

/* ------------------------------------------------------------------ pages (landing sections) */
.page-head { padding: clamp(48px, 7vw, 96px) 0 clamp(28px, 4vw, 48px); }
.page-head h1 { font: 740 clamp(2.4rem, 1.4rem + 3.6vw, 4.3rem)/1.03 var(--font-sans); letter-spacing: -.045em; margin: 0 0 22px; max-width: 18ch; text-wrap: balance; }
.page-head .deck { font: 400 clamp(1.15rem, 1rem + .5vw, 1.45rem)/1.5 var(--font-serif); color: var(--ink-2); max-width: 52ch; margin: 0; }
.page-body .prose { max-width: var(--measure); }
.landing { font-family: var(--font-sans); }
.landing .block { padding: clamp(40px, 6vw, 80px) 0; border-top: 1px solid var(--line); }
.landing .block:first-child { border-top: 0; padding-top: 0; }
.landing h2 { font: 700 clamp(1.7rem, 1.25rem + 1.4vw, 2.5rem)/1.1 var(--font-sans); letter-spacing: -.035em; margin: 0 0 18px; max-width: 24ch; text-wrap: balance; }
.landing h3 { font: 650 19px/1.3 var(--font-sans); letter-spacing: -.015em; margin: 0 0 10px; }
.landing p { font-size: 17px; line-height: 1.65; color: var(--ink-2); max-width: 64ch; }
.landing .lead { font: 400 clamp(1.15rem, 1.05rem + .4vw, 1.35rem)/1.6 var(--font-serif); color: var(--ink-2); max-width: 58ch; }
.landing .grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.landing .grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .landing .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .landing .grid-2, .landing .grid-3 { grid-template-columns: 1fr; } }
.landing .tile { padding: 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; }
.landing .tile p { font-size: 15.5px; margin: 0; color: var(--muted); }
.landing .tile ul { margin: 10px 0 0; padding-left: 1.1em; color: var(--ink-2); font-size: 15px; line-height: 1.55; }
.landing .tile .meta { font: 500 12.5px/1.2 var(--font-mono); color: var(--signal-ink); letter-spacing: .02em; margin-bottom: 6px; }
.landing .tile .outcome { margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--line-2); font-size: 14.5px; color: var(--ink-2); }
.landing .tile .outcome b { color: var(--ink); }
.landing .split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(24px, 5vw, 72px); align-items: start; }
@media (max-width: 860px) { .landing .split { grid-template-columns: 1fr; } }
.landing .facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.landing .facts > div { padding: 24px; border-left: 1px solid var(--line); }
.landing .facts > div:first-child { border-left: 0; }
.landing .facts b { display: block; font: 720 clamp(1.6rem, 1.2rem + 1.2vw, 2.3rem)/1 var(--font-sans); letter-spacing: -.04em; color: var(--ink); margin-bottom: 8px; }
.landing .facts span { font-size: 14px; color: var(--muted); line-height: 1.4; display: block; }
@media (max-width: 760px) { .landing .facts { grid-template-columns: 1fr 1fr; } .landing .facts > div:nth-child(3) { border-left: 0; } .landing .facts > div:nth-child(n+3) { border-top: 1px solid var(--line); } }
.landing .steps { list-style: none; margin: 0; padding: 0; counter-reset: st; display: grid; gap: 0; border-top: 1px solid var(--line); }
.landing .steps li { counter-increment: st; display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 8px 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.landing .steps li::before { content: counter(st, decimal-leading-zero); font: 500 14px/1.6 var(--font-mono); color: var(--signal-ink); }
.landing .steps h3 { margin: 0 0 6px; }
.landing .steps p { margin: 0; font-size: 16px; }
.landing .faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.landing .faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; padding: 18px 0; font: 620 17px/1.4 var(--font-sans); }
.landing .faq summary::-webkit-details-marker { display: none; }
.landing .faq summary::after { content: "+"; font: 400 24px/1 var(--font-sans); color: var(--muted); transition: transform 200ms var(--ease-out); }
.landing .faq details[open] summary::after { transform: rotate(45deg); }
.landing .faq details p { margin: 0 0 20px; }
.landing .cta-panel { margin-top: 0; }
.landing .quote { font: 400 clamp(1.3rem, 1.1rem + .8vw, 1.8rem)/1.45 var(--font-serif); font-style: italic; color: var(--ink); max-width: 36ch; margin: 0; border: 0; padding: 0; }
.landing .tagline-list { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 18px 0 0; list-style: none; }
.landing .tagline-list li { font: 500 13.5px/1 var(--font-sans); padding: 9px 12px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--ink-2); background: var(--surface); }
.portrait { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); background: var(--surface-2); aspect-ratio: 4 / 5; }
.portrait img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* consent */
.consent { position: fixed; right: 16px; bottom: 16px; z-index: 60; max-width: 380px; padding: 18px 20px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-2); font-size: 14.5px; line-height: 1.5; color: var(--ink-2); transform: translateY(12px); opacity: 0; transition: transform 300ms var(--ease-out), opacity 240ms ease; }
.consent.is-shown { transform: none; opacity: 1; }
.consent p { margin: 0 0 14px; }
.consent .actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.consent button { min-height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; font: 600 13.5px/1 var(--font-sans); cursor: pointer; }
.consent button[data-choice="yes"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.consent a { font-size: 13.5px; color: var(--muted); margin-left: auto; }
@media (max-width: 520px) { .consent { left: 12px; right: 12px; bottom: 12px; max-width: none; } }

/* error */
.error-page { padding: 120px 0; text-align: center; }
.error-page h1 { font: 760 clamp(3rem, 2rem + 6vw, 7rem)/1 var(--font-sans); letter-spacing: -.05em; margin: 0 0 12px; }
.error-page p { color: var(--muted); font-size: 18px; margin: 0 0 28px; }

/* reveal on scroll (only when JS ran and motion allowed) */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 600ms var(--ease-out), transform 700ms var(--ease-out); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { scroll-behavior: auto !important; }
  .card:hover .card-media img, .topic-card:hover { transform: none; }
}
@media print { .site-header, .site-footer, .toc, .consent, .dm-bar, .post-end .cta-panel { display: none !important; } .prose > .dm { width: auto; transform: none; margin-left: 0; } }