/* A calm app directory. Each group has one soft color pair; a new group needs --<group>-bg/fg (light and dark) and a .g-<group> rule. */
:root {
  color-scheme: light dark;
  --bg: #f7f7f4;
  --card: #ffffff;
  --ink: #16181b;
  --muted: #6a6e74;
  --line: #e4e4de;
  --line-strong: #cfcfc7;
  --shadow: 0 1px 2px rgba(22, 24, 27, .04), 0 8px 24px -12px rgba(22, 24, 27, .14);
  --focus: #2b5fd9;
  --learn-bg: #ece8f8; --learn-fg: #4f3f9a;
  --science-bg: #dff1ee; --science-fg: #17675c;
  --phone-bg: #e2ecf8; --phone-fg: #1f5a94;
  --money-bg: #f6ecda; --money-fg: #8a5512;
  --play-bg: #f8e4ea; --play-fg: #9a3554;
  /* Spare pair for a future group: #e6efd9 / #4b6b1d */
  --sans: system-ui, -apple-system, 'Segoe UI', 'Malgun Gothic', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Noto Sans', sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121315;
    --card: #1a1b1e;
    --ink: #eeeeeb;
    --muted: #a0a3a8;
    --line: #2a2c30;
    --line-strong: #3a3d42;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px -14px rgba(0, 0, 0, .7);
    --focus: #8fb0ff;
    --learn-bg: #292543; --learn-fg: #c3b8f5;
    --science-bg: #17322e; --science-fg: #8fd8cb;
    --phone-bg: #1b2b3c; --phone-fg: #9ac6f0;
    --money-bg: #362a17; --money-fg: #f0c47e;
    --play-bg: #3a1f29; --play-fg: #f2a5bc;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.55; overflow-wrap: break-word; }
html[lang=ko] body { word-break: keep-all; }
a { color: inherit; text-decoration: none; }
h1, h2, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
button, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; top: -100px; left: 16px; z-index: 10; background: var(--ink); color: var(--bg); padding: 10px 15px; border-radius: 6px; }
.skip:focus { top: 10px; }

.g-learn { background: var(--learn-bg); color: var(--learn-fg); }
.g-science { background: var(--science-bg); color: var(--science-fg); }
.g-phone { background: var(--phone-bg); color: var(--phone-fg); }
.g-money { background: var(--money-bg); color: var(--money-fg); }
.g-play { background: var(--play-bg); color: var(--play-fg); }

.top, .hero, .apps, .foot { width: min(100% - 48px, 1180px); margin-inline: auto; }

/* Header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; font-weight: 650; letter-spacing: -.01em; }
.brand-mark { display: grid; place-items: center; flex: none; width: 28px; height: 28px; border-radius: 8px; background: var(--ink); color: var(--bg); font-size: 15px; font-weight: 700; }
.top-end { display: flex; align-items: center; gap: 14px; flex: none; }
.top-link { color: var(--muted); font-size: 14px; font-weight: 550; white-space: nowrap; }
.top-link:hover { color: var(--ink); }

/* Language menu: plain links, so it works without JavaScript */
.lang { position: relative; flex: none; }
.lang summary { display: flex; align-items: center; gap: 8px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); font-size: 14px; cursor: pointer; list-style: none; user-select: none; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary::after { content: ''; width: 6px; height: 6px; margin-top: -3px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); opacity: .6; }
.lang[open] summary::after { margin-top: 3px; transform: rotate(-135deg); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 6px); z-index: 5; min-width: 180px; max-height: min(70vh, 460px); overflow-y: auto; padding: 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); box-shadow: var(--shadow); }
.lang-menu a { display: block; padding: 7px 10px; border-radius: 7px; font-size: 14px; }
.lang-menu a:hover { background: var(--bg); }
.lang-menu a[aria-current=page] { font-weight: 650; }
.lang-menu a[aria-current=page]::after { content: ' ✓'; color: var(--muted); }

/* Intro: text and a board of every app icon */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 48px; padding: 48px 0 52px; }
.hero h1 { font-size: clamp(32px, 4.4vw, 54px); font-weight: 650; line-height: 1.12; letter-spacing: -.03em; }
html[lang=ko] .hero h1 { line-height: 1.24; letter-spacing: -.02em; }
.hero p { max-width: 50ch; margin-top: 18px; color: var(--muted); font-size: 17px; }
.board { display: grid; grid-template-columns: repeat(6, 52px); gap: 10px; padding: 18px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); box-shadow: var(--shadow); }
.tile { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; transition: transform .18s; }
.tile:hover { transform: translateY(-2px) scale(1.05); }
.tile img, .app-icon img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* Group filter */
.apps { padding-bottom: 72px; }
.tabs-wrap { position: sticky; top: 0; z-index: 3; margin-bottom: 8px; padding: 10px 0; background: var(--bg); }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.tab { display: inline-flex; align-items: center; gap: 7px; padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--muted); font-size: 14.5px; font-weight: 550; white-space: nowrap; cursor: pointer; transition: color .15s, border-color .15s, background .15s; }
.tab:hover { color: var(--ink); border-color: var(--line-strong); }
.tab[aria-pressed=true] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.tab-count { font-size: 12.5px; font-weight: 500; opacity: .7; font-variant-numeric: tabular-nums; }

/* Groups and app cards */
.group { padding-top: 28px; }
.group[hidden] { display: none; }
.group-head { display: flex; align-items: center; gap: 18px; margin-bottom: 16px; }
.group-cover { flex: none; width: 128px; aspect-ratio: 16 / 10; border-radius: 14px; object-fit: cover; box-shadow: var(--shadow); }
.group-title { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 650; letter-spacing: -.01em; }
.group-desc { max-width: 70ch; margin-top: 4px; color: var(--muted); font-size: 14.5px; line-height: 1.5; }

/* Illustrations (optional: shown only when the image files exist, see 이미지요청.md) */
.hero.has-art { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); }
.hero.has-art .board { grid-template-columns: repeat(9, 40px); gap: 7px; margin-top: 30px; padding: 12px; border-radius: 18px; justify-self: start; width: max-content; }
.hero.has-art .tile { width: 40px; height: 40px; border-radius: 11px; }
.hero.has-art .tile svg { width: 19px; height: 19px; }
.hero-art { margin: 0; }
.hero-art img, .prose-art img { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 28px; background: var(--card); box-shadow: var(--shadow); }
.prose-art { margin: 32px 0 0; }
.prose-art img { aspect-ratio: 16 / 9; border-radius: 24px; }
.about-cover { display: block; width: 100%; aspect-ratio: 16 / 9; margin-bottom: 14px; border-radius: 12px; object-fit: cover; }
.group-dot { width: 10px; height: 10px; border-radius: 3px; }
.group-dot.g-learn { background: var(--learn-fg); }
.group-dot.g-science { background: var(--science-fg); }
.group-dot.g-phone { background: var(--phone-fg); }
.group-dot.g-money { background: var(--money-fg); }
.group-dot.g-play { background: var(--play-fg); }
.group-count { color: var(--muted); font-size: 14px; font-weight: 400; }
.app-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.app-list li { display: flex; }
.app { position: relative; display: grid; grid-template-columns: 48px minmax(0, 1fr) 16px; gap: 14px; align-items: start; width: 100%; padding: 18px 18px 20px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); transition: border-color .18s, box-shadow .18s, transform .18s; }
.app:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.app.is-marked { animation: mark 1.6s ease-out; }
@keyframes mark { 0%, 40% { border-color: var(--ink); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ink) 14%, transparent); } }
.app-icon { display: grid; place-items: center; width: 48px; height: 48px; overflow: hidden; border-radius: 13px; }
.app-body { display: flex; flex-direction: column; min-width: 0; }
.app-name { font-size: 16.5px; font-weight: 650; line-height: 1.3; letter-spacing: -.01em; }
.app-tag { margin-top: 2px; color: var(--muted); font-size: 13px; }
.app-desc { margin-top: 8px; font-size: 14.5px; line-height: 1.5; }
.app-arrow { color: var(--muted); font-size: 15px; line-height: 1.4; transition: transform .18s, color .18s; }
.app:hover .app-arrow { color: var(--ink); transform: translate(2px, -2px); }

/* Footer */
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 24px; padding: 22px 0 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

/* About page */
.prose { width: min(100% - 48px, 760px); margin-inline: auto; padding: 40px 0 72px; }
.prose h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 650; line-height: 1.2; letter-spacing: -.025em; }
.prose-lead { margin-top: 18px; color: var(--muted); font-size: 18px; line-height: 1.6; }
.prose-section { margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); }
.prose h2 { font-size: 20px; font-weight: 650; letter-spacing: -.01em; }
.prose-section > p { margin-top: 12px; font-size: 16px; line-height: 1.75; }
.about-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 20px; }
.about-groups li { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.about-groups h3 { display: flex; align-items: center; gap: 9px; margin: 0; font-size: 16px; font-weight: 650; }
.about-groups h3 a:hover { text-decoration: underline; text-underline-offset: 3px; }
.about-groups p { margin-top: 8px; font-size: 14.5px; line-height: 1.6; }
.about-groups .about-apps { color: var(--muted); font-size: 13.5px; }
.text-link { font-weight: 600; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.prose-back { margin-top: 48px; }

@media (max-width: 1080px) {
  .app-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .board { grid-template-columns: repeat(6, 44px); gap: 8px; padding: 14px; border-radius: 20px; }
  .tile { width: 44px; height: 44px; border-radius: 12px; }
  .tile svg { width: 20px; height: 20px; }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .board { justify-self: start; }
  .hero.has-art { grid-template-columns: minmax(0, 1fr); }
  .hero-art img { aspect-ratio: 16 / 10; border-radius: 22px; }
}
@media (max-width: 720px) {
  .top, .hero, .apps, .foot { width: min(100% - 40px, 1180px); }
  .top { padding: 16px 0; }
  .hero { padding: 22px 0 30px; }
  .hero p { font-size: 16px; }
  .board { grid-template-columns: repeat(9, minmax(0, 1fr)); width: 100%; gap: 6px; padding: 10px; border-radius: 16px; }
  .tile { width: auto; height: auto; aspect-ratio: 1; border-radius: 9px; }
  .tile svg { width: 60%; height: 60%; }
  .tabs-wrap { margin-inline: -20px; padding-inline: 20px; }
  .tabs { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin-inline: -20px; padding-inline: 20px; }
  .tabs::-webkit-scrollbar { display: none; }
  .tab { flex: none; }
  .app-list { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .app { padding: 16px; }
  .top-end { gap: 10px; }
  /* When the site name, About link and language menu do not fit on one line, the menu row moves below. */
  .top { flex-wrap: wrap; row-gap: 10px; }
  .brand { white-space: nowrap; }
  .top-end { margin-left: auto; }
  .hero.has-art .board { grid-template-columns: repeat(9, minmax(0, 1fr)); width: 100%; gap: 6px; padding: 10px; }
  .hero.has-art .tile { width: auto; height: auto; }
  .group-head { gap: 14px; }
  .group-cover { width: 84px; border-radius: 12px; }
  .group-desc { font-size: 14px; }
  .prose { width: min(100% - 40px, 760px); padding-top: 24px; }
  .prose-art img { border-radius: 18px; }
  .prose-lead { font-size: 17px; }
  .about-groups { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Language entry page (index.html), shown only if the automatic redirect does not run */
.language-fallback { display: block; width: min(100% - 40px, 720px); margin: 40px auto; }
.language-fallback nav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.language-fallback nav a { padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; }

/* ===================================================================
   Korean blog (tools/blog.py): home, categories, posts, app posts
   =================================================================== */
.c-learn { --c-bg: var(--learn-bg); --c-fg: var(--learn-fg); }
.c-science { --c-bg: var(--science-bg); --c-fg: var(--science-fg); }
.c-phone { --c-bg: var(--phone-bg); --c-fg: var(--phone-fg); }
.c-money { --c-bg: var(--money-bg); --c-fg: var(--money-fg); }
.c-play { --c-bg: var(--play-bg); --c-fg: var(--play-fg); }
.wrap { width: min(100% - 48px, 1180px); margin-inline: auto; }
.muted { color: var(--muted); }
h1, h2, h3 { margin: 0; }

/* Header with the category menu */
.site-head { position: sticky; top: 0; z-index: 6; background: var(--bg); border-bottom: 1px solid var(--line); }
.site-head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0 8px; }
.menu { display: flex; gap: 24px; overflow-x: auto; scrollbar-width: none; }
.menu::-webkit-scrollbar { display: none; }
.menu a { position: relative; flex: none; padding: 9px 0 13px; color: var(--muted); font-size: 15px; font-weight: 550; white-space: nowrap; }
.menu a:hover, .menu a.on { color: var(--ink); }
.menu a.on::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--ink); }
.menu a.apps-link { margin-left: auto; color: var(--ink); }
.top-link.on { color: var(--ink); }
.apps-page .hero { padding-top: 32px; }

/* Shared bits */
.crumb { color: var(--muted); font-size: 13.5px; }
.crumb a { text-decoration: underline; text-underline-offset: 3px; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; color: var(--muted); font-size: 13.5px; }
.chip { padding: 2px 9px; border-radius: 999px; background: var(--c-bg); color: var(--c-fg); font-size: 12.5px; font-weight: 600; }
.chip.app-chip { background: var(--ink); color: var(--bg); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; background: var(--c-fg); }
.btn { display: inline-block; margin-top: 14px; padding: 8px 16px; border-radius: 999px; background: var(--ink); color: var(--bg); font-size: 14px; font-weight: 600; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.block-head h2 { font-size: 18px; }
.block-head span, .block-head a { color: var(--muted); font-size: 13.5px; }
.block-head a { color: var(--ink); font-weight: 650; text-decoration: underline; text-underline-offset: 3px; }
.noimg { display: block; background: var(--line); }
.icon { display: grid; place-items: center; flex: none; overflow: hidden; }
.icon img { width: 100%; height: 100%; object-fit: cover; }

/* Home: featured post */
.feature { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 32px; align-items: center; padding: 28px 0 32px; }
.feature > img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 18px; box-shadow: var(--shadow); }
.kicker { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 650; }
.feature h1 { margin-top: 8px; font-size: clamp(24px, 2.6vw, 30px); line-height: 1.3; letter-spacing: -.02em; }
.feature h1 a:hover { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.feature p { margin-top: 8px; color: var(--muted); font-size: 15.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.feature .meta { margin-top: 10px; }

/* Home: sidebar + latest posts */
.layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; padding: 36px 0 56px; border-top: 1px solid var(--line); }
.side { align-self: start; position: sticky; top: 120px; }
.side h2 { font-size: 14px; margin-bottom: 10px; }
.side li a { display: flex; align-items: center; gap: 9px; padding: 7px 0; color: var(--muted); font-size: 14.5px; }
.side li a:hover { color: var(--ink); }
.side-apps { margin-top: 28px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.side-apps p { margin: 4px 0 12px; color: var(--muted); font-size: 13px; }
.mini-icons { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.mini { display: grid; place-items: center; aspect-ratio: 1; border-radius: 8px; overflow: hidden; }
.mini img { width: 100%; height: 100%; object-fit: cover; }
.side-apps > a { display: inline-block; margin-top: 12px; font-size: 13.5px; font-weight: 650; text-decoration: underline; text-underline-offset: 3px; }
.section-title { padding-bottom: 14px; border-bottom: 1px solid var(--line); font-size: 18px; }
.post { display: grid; grid-template-columns: minmax(0, 1fr) 168px; gap: 28px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.post[hidden] { display: none; }
.post-title { font-size: 18.5px; line-height: 1.4; letter-spacing: -.01em; }
.post:hover .post-title { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.post p { margin-top: 8px; color: var(--muted); font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post > img { display: block; width: 168px; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 14px; }
.more { display: block; margin-top: 22px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); text-align: center; font-size: 14.5px; font-weight: 600; }

/* Home: category cards */
.apps-strip { padding: 40px 0 56px; border-top: 1px solid var(--line); }
.group-cards { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.group-cards a { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--card); transition: box-shadow .18s, transform .18s; }
.group-cards a:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.group-cards img, .group-cards .noimg { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: var(--c-bg); }
.group-cards div { padding: 12px 14px 14px; }
.group-cards strong { font-size: 15px; }
.group-cards span { display: block; color: var(--muted); font-size: 13px; }

/* Category page */
.cat-head { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 28px; align-items: center; margin-top: 24px; padding: 20px 24px; border-radius: 22px; background: var(--c-bg); color: var(--c-fg); }
.cat-head .crumb { color: inherit; opacity: .85; }
.cat-head h1 { margin-top: 4px; font-size: clamp(26px, 3vw, 32px); letter-spacing: -.02em; }
.cat-head p { max-width: 58ch; margin-top: 6px; font-size: 15.5px; opacity: .9; }
.cat-head img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; }
.cat-apps { margin-top: 28px; }
.app-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.app-tile { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 12px; align-items: center; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); transition: box-shadow .18s, transform .18s; }
.app-tile:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.app-tile .icon { width: 42px; height: 42px; border-radius: 12px; }
.app-tile strong { display: block; font-size: 14.5px; line-height: 1.3; }
.app-tile span:not(.icon) { display: block; margin-top: 2px; color: var(--muted); font-size: 12.5px; }
.cat-posts, .list-page { margin-top: 40px; padding-bottom: 64px; }
.list-page h1 { margin-top: 8px; font-size: clamp(26px, 3vw, 34px); }
.list-intro { margin: 8px 0 22px; color: var(--muted); }
.subtopics { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.subtopics[hidden] { display: none; }
.topic { padding: 6px 13px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--muted); font-size: 14px; font-weight: 550; cursor: pointer; }
.topic:hover { color: var(--ink); }
.topic[aria-pressed=true] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.post-list { border-top: 1px solid var(--line); }
.section-title + .post-list { border-top: 0; }

/* Post and app post pages */
.article-wrap { display: grid; grid-template-columns: minmax(0, 720px) 280px; gap: 56px; justify-content: center; padding: 36px 0 72px; }
.article h1 { margin-top: 10px; font-size: clamp(28px, 3.6vw, 38px); line-height: 1.28; letter-spacing: -.02em; }
.lead { margin-top: 12px; color: var(--muted); font-size: 17px; line-height: 1.65; }
.cover { margin: 26px 0 6px; }
.cover img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 20px; }
.body h2 { margin-top: 40px; font-size: 22px; letter-spacing: -.01em; scroll-margin-top: 120px; }
.body h3 { margin-top: 26px; font-size: 18px; }
.body p { margin-top: 14px; font-size: 16.5px; line-height: 1.85; }
.body ol, .body ul { margin: 14px 0 0; padding-left: 22px; font-size: 16.5px; line-height: 1.85; }
.body ul { list-style: disc; }
.body li + li { margin-top: 4px; }
.body strong { font-weight: 650; }
.body a { text-decoration: underline; text-underline-offset: 3px; }
.body code { padding: 1px 6px; border-radius: 6px; background: var(--line); font-family: ui-monospace, Consolas, monospace; font-size: .92em; }
.body table { width: 100%; margin-top: 18px; border-collapse: collapse; overflow: hidden; border-radius: 12px; background: var(--card); box-shadow: 0 0 0 1px var(--line); font-size: 15px; }
.body th, .body td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.body th { background: var(--bg); font-weight: 650; }
.body tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }
.swatch { display: inline-block; width: 14px; height: 14px; margin-right: 8px; border-radius: 4px; vertical-align: -2px; box-shadow: 0 0 0 1px rgba(0, 0, 0, .15); }
.tip { margin-top: 22px; padding: 16px 18px; border-radius: 14px; background: var(--c-bg, var(--line)); color: var(--c-fg, var(--ink)); font-size: 15.5px; line-height: 1.7; }
.tip strong { display: block; margin-bottom: 4px; }
/* Pictures, charts and diagrams inside posts */
.photo, .chart { margin: 26px 0 8px; }
.photo img { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 16px; }
.photo figcaption, .chart figcaption { margin-top: 8px; color: var(--muted); font-size: 13.5px; line-height: 1.55; text-align: center; }
.ai-label { margin-left: 8px; padding: 1px 7px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 11.5px; white-space: nowrap; }
.chart .frame { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); overflow: hidden; }
.chart svg { display: block; width: 100%; max-width: 100%; height: auto; font-family: var(--sans); }
.chart .t { fill: var(--ink); font-size: 15px; }
.chart .m { fill: var(--muted); font-size: 13px; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .axis { stroke: var(--line-strong); stroke-width: 1.2; }
.chart .ink-stroke { stroke: var(--ink); }
.chart .ink-fill { fill: var(--ink); }
.chart .card-fill { fill: var(--card); }
.chart .c-fg { fill: var(--c-fg); }
.chart .c-bg { fill: var(--c-bg); }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.pair .photo { margin-top: 0; }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; counter-reset: step; }
.steps div { position: relative; padding: 16px 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); font-size: 14.5px; line-height: 1.5; counter-increment: step; }
.steps div::before { content: counter(step); display: grid; place-items: center; width: 26px; height: 26px; margin-bottom: 8px; border-radius: 50%; background: var(--c-bg); color: var(--c-fg); font-size: 13px; font-weight: 700; }
.steps strong { display: block; font-size: 15px; }
@media (max-width: 760px) {
  .pair { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chart .frame { padding: 8px; border-radius: 12px; }
}
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.feature-grid div { padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.feature-grid strong { display: block; font-size: 16px; }
.feature-grid span { display: block; margin-top: 4px; color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.link-list { list-style: none !important; padding-left: 0 !important; }
.text-link { font-weight: 600; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.app-card { display: grid; grid-template-columns: 56px minmax(0, 1fr) auto; gap: 16px; align-items: center; margin-top: 40px; padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); box-shadow: var(--shadow); }
.app-card + .app-card { margin-top: 12px; }
.app-card .icon { width: 56px; height: 56px; border-radius: 15px; }
.app-card small { color: var(--muted); font-size: 12.5px; font-weight: 650; }
.app-card strong { display: block; font-size: 17px; }
.app-card p { margin-top: 2px; color: var(--muted); font-size: 14px; }
.go { padding: 9px 16px; border-radius: 999px; background: var(--card); box-shadow: 0 0 0 1px var(--line-strong); font-size: 14px; font-weight: 600; white-space: nowrap; }
.go:hover { background: var(--ink); color: var(--bg); box-shadow: none; }
.prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
.prevnext a { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.prevnext a:hover { border-color: var(--line-strong); }
.prevnext a:last-child { text-align: right; }
.prevnext small { color: var(--muted); font-size: 12.5px; }
.prevnext strong { display: block; margin-top: 2px; font-size: 15px; line-height: 1.4; }
.aside { position: sticky; top: 120px; align-self: start; }
.aside h2 { margin-bottom: 10px; font-size: 14px; }
.toc { padding: 14px 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.toc a { display: block; padding: 5px 0; color: var(--muted); font-size: 14px; line-height: 1.45; }
.toc a:hover { color: var(--ink); }
.related { margin-top: 24px; }
.related a { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; line-height: 1.4; }
.related img, .related .noimg { width: 64px; aspect-ratio: 1; object-fit: cover; border-radius: 10px; }
.related a:hover span { text-decoration: underline; text-underline-offset: 3px; }

/* App post */
.app-hero { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 22px; align-items: center; margin-top: 14px; }
.big-icon { display: grid; place-items: center; width: 88px; height: 88px; overflow: hidden; border-radius: 24px; box-shadow: var(--shadow); }
.big-icon img { width: 100%; height: 100%; object-fit: cover; }
.app-hero small { color: var(--muted); font-size: 13px; font-weight: 650; }
.app-hero h1 { margin-top: 2px; }
.app-hero .lead { margin-top: 6px; }
.cta { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; margin-top: 40px; padding: 22px 24px; border-radius: 18px; background: var(--ink); color: var(--bg); }
.cta strong { display: block; font-size: 17px; }
.cta span { display: block; margin-top: 4px; font-size: 14px; opacity: .78; }
.cta a { padding: 10px 18px; border-radius: 999px; background: var(--bg); color: var(--ink); font-size: 14.5px; font-weight: 650; white-space: nowrap; }
.note-small { margin-top: 12px; color: var(--muted); font-size: 13px; }

/* Blog footer */
.blog-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding: 22px 0 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.blog-foot nav { display: flex; flex-wrap: wrap; gap: 16px; }
.blog-foot a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 1080px) {
  .group-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .app-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .article-wrap { grid-template-columns: minmax(0, 720px); }
  .aside { position: static; }
}
@media (max-width: 760px) {
  .wrap { width: min(100% - 40px, 1180px); }
  .site-head-row { padding: 12px 0 6px; }
  .menu { gap: 20px; margin-inline: -20px; padding-inline: 20px; }
  .menu a.apps-link { margin-left: 0; }
  .feature { grid-template-columns: 112px minmax(0, 1fr); gap: 16px; align-items: start; padding: 20px 0 24px; }
  .feature > img { aspect-ratio: 1; border-radius: 14px; }
  .feature h1 { margin-top: 4px; font-size: 18px; }
  .feature p, .feature .btn { display: none; }
  .layout { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 24px; }
  .side { display: none; }
  .post { grid-template-columns: minmax(0, 1fr) 92px; gap: 16px; padding: 18px 0; }
  .post-title { font-size: 16.5px; }
  .post > img { width: 92px; aspect-ratio: 1; }
  .group-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cat-head { grid-template-columns: minmax(0, 1fr) 92px; gap: 14px; padding: 16px; border-radius: 18px; }
  .cat-head img { aspect-ratio: 1; border-radius: 12px; }
  .cat-head p { font-size: 14px; }
  .block-head { flex-direction: column; align-items: flex-start; gap: 2px; }
  .app-row { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: 72%; overflow-x: auto; margin-inline: -20px; padding: 2px 20px 8px; scrollbar-width: none; }
  .subtopics { flex-wrap: nowrap; overflow-x: auto; margin-inline: -20px; padding-inline: 20px; scrollbar-width: none; }
  .topic { flex: none; }
  .article-wrap { padding-top: 24px; }
  .lead { font-size: 16px; }
  .body p, .body ol, .body ul { font-size: 16px; }
  .feature-grid { grid-template-columns: minmax(0, 1fr); }
  .app-card { grid-template-columns: 48px minmax(0, 1fr); }
  .app-card .icon { width: 48px; height: 48px; }
  .app-card .go { grid-column: 1 / -1; text-align: center; }
  .prevnext { grid-template-columns: minmax(0, 1fr); }
  .app-hero { grid-template-columns: 64px minmax(0, 1fr); gap: 14px; }
  .big-icon { width: 64px; height: 64px; border-radius: 18px; }
  .cta { grid-template-columns: minmax(0, 1fr); }
  .cta a { text-align: center; }
}