/* alvinsnow.com — shared styles for the home page, the guides index, drafts and 404.
   Guide pages do NOT load this file; they get a scoped copy of the nav styles from tools/build.py. */

:root {
  color-scheme: light dark;
  /* Snow & glacier: cool paper, navy ink, ice blue. Inspired by, not copied from, any company palette. */
  --paper:   light-dark(#f4f7f9, #0a141d);
  --paper-2: light-dark(#e8eef2, #111f2b);
  --ink:     light-dark(#0c1e2c, #e5edf3);
  --ink-2:   light-dark(#3b5163, #a8bac8);
  --ink-3:   light-dark(#687e8f, #7690a3);
  --rule:    color-mix(in srgb, var(--ink) 88%, transparent);
  --hair:    color-mix(in srgb, var(--ink) 15%, transparent);
  --accent:     light-dark(#1d8fd0, #5cc6f2);   /* large type, logo, rules */
  --accent-ink: light-dark(#0b679d, #82d4f6);   /* small accent text: labels, eyebrows */
  --fill:       light-dark(#0f6aa3, #5cc6f2);   /* solid backgrounds behind text */
  --on-accent:  light-dark(#ffffff, #052033);
  --code-bg: #0b1823;
  --code-ink: #e2ecf3;

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(18px, 4.2vw, 56px);
  --max: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, canvas { max-width: 100%; }
a { color: inherit; }
::selection { background: var(--fill); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); font-size: .78rem; letter-spacing: .02em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- wordmark: one word, one colour, read it however you like ---------- */
.wm { display: inline-block; font-family: var(--serif); font-weight: 600; letter-spacing: -.03em; white-space: nowrap; font-optical-sizing: auto; }

/* ---------- masthead ---------- */
.mast { border-bottom: 1px solid var(--rule); position: relative; z-index: 5; background: var(--paper); }
.mast .wrap { display: flex; align-items: center; justify-content: space-between; gap: 14px 28px;
              flex-wrap: wrap; min-height: 68px; padding-top: 10px; padding-bottom: 10px; }
.mast .home { text-decoration: none; font-size: 1.45rem; line-height: 1; }
.mast nav { display: flex; align-items: center; gap: 2px 22px; flex-wrap: wrap; }
.mast nav a { text-decoration: none; font-size: .92rem; font-weight: 500; color: var(--ink-2);
              padding: 6px 0; background: linear-gradient(var(--accent), var(--accent)) left bottom / 0 1.5px no-repeat;
              transition: background-size .3s ease, color .2s ease; }
.mast nav a:hover, .mast nav a[aria-current="page"] { color: var(--ink); background-size: 100% 1.5px; }
.mast .clock { color: var(--ink-3); display: inline-flex; align-items: center; gap: 8px; }
.mast .clock::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
                       box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
                       animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 0%, transparent); } }
.ext::after { content: "\2197"; display: inline-block; margin-left: .25em; font-size: .85em; transition: transform .25s ease; }
a:hover .ext::after, a.ext:hover::after { transform: translate(2px, -2px); }

/* mobile menu: a <details>, so it works without JavaScript */
.mnav { display: none; }
.mnav > summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 10px; padding: 9px 12px;
                  border: 1px solid var(--rule); font: 500 .74rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.mnav > summary::-webkit-details-marker { display: none; }
.mnav > summary .bars { position: relative; width: 14px; height: 8px; }
.mnav > summary .bars::before, .mnav > summary .bars::after { content: ""; position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor; transition: transform .3s ease, top .3s ease; }
.mnav > summary .bars::before { top: 0; } .mnav > summary .bars::after { top: 6.5px; }
.mnav[open] > summary { background: var(--ink); color: var(--paper); }
.mnav[open] > summary .bars::before { top: 3.25px; transform: rotate(45deg); }
.mnav[open] > summary .bars::after { top: 3.25px; transform: rotate(-45deg); }
.mnav .when-open { display: none; } .mnav[open] .when-open { display: inline; } .mnav[open] .when-shut { display: none; }
.mnav-panel { position: fixed; left: 0; right: 0; top: var(--mast-h, 65px); bottom: 0; z-index: 40; overflow-y: auto;
              background: var(--paper); border-top: 1px solid var(--rule); padding: 8px var(--gutter) 32px;
              display: flex; flex-direction: column; animation: drop .35s cubic-bezier(.2,.8,.2,1); }
@keyframes drop { from { transform: translateY(-8px); } }
.mnav-panel ol { list-style: none; margin: 0; padding: 0; counter-reset: m; }
.mnav-panel li { border-bottom: 1px solid var(--rule); counter-increment: m; }
.mnav-panel li a { display: flex; align-items: baseline; gap: 16px; padding: 18px 0; text-decoration: none; color: var(--ink);
                   font-family: var(--serif); font-size: 2.2rem; line-height: 1.05; letter-spacing: -.025em; }
.mnav-panel li a::before { content: counter(m, decimal-leading-zero); font: 500 .74rem var(--mono); color: var(--ink-3); min-width: 1.6rem; }
.mnav-panel li a[aria-current="page"] { font-style: italic; color: var(--accent-ink); }
.mnav-panel li a:active { color: var(--accent-ink); }
.mnav-panel .ext::after { font-size: .5em; vertical-align: .6em; }
.mnav-panel .meta { margin-top: auto; padding-top: 28px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; color: var(--ink-3); }
.mnav-panel .meta a { color: var(--ink-2); text-decoration: none; }
.mnav:not([open]) .mnav-panel { display: none; }
html:has(.mnav[open]) { overflow: hidden; }

/* ---------- shared section scaffolding ---------- */
.label { display: flex; align-items: baseline; gap: 14px; font-family: var(--mono); font-size: .76rem;
         letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 22px; }
.label b { color: var(--accent-ink); font-weight: 500; }
.label::after { content: ""; flex: 1; height: 1px; background: var(--hair); transform: translateY(-3px); }
h1, h2, h3 { font-family: var(--serif); font-optical-sizing: auto; font-weight: 400; letter-spacing: -.02em; margin: 0; }
h1 em, h2 em, h3 em { font-style: italic; color: var(--accent); }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.24rem); line-height: 1.6; color: var(--ink-2); max-width: 36em; margin: 26px 0 0; }
.lede b { color: var(--ink); font-weight: 500; }

/* ---------- hero (home) ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--rule);
        background-image:
          linear-gradient(var(--hair) 1px, transparent 1px),
          linear-gradient(90deg, var(--hair) 1px, transparent 1px);
        background-size: 44px 44px; background-position: -1px -1px; }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
               background: radial-gradient(120% 90% at 20% 30%, transparent 30%, var(--paper) 85%); }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; }
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
              gap: clamp(36px, 6vw, 96px); align-items: end;
              padding-top: clamp(64px, 11vw, 150px); padding-bottom: clamp(48px, 7vw, 96px); }
.hero h1 { font-size: clamp(2.7rem, 7.4vw, 6.6rem); line-height: .98; font-weight: 350; letter-spacing: -.035em; }
.hero h1 .line { display: block; }
.hero .hi { font-family: var(--mono); font-size: .8rem; letter-spacing: .06em; color: var(--ink-2);
            display: inline-flex; gap: 10px; align-items: center; margin-bottom: 26px; padding: 6px 12px;
            border: 1px solid var(--rule); background: var(--paper); }
.hero .hi i { font-style: normal; color: var(--accent-ink); }
.spec { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); background: color-mix(in srgb, var(--paper) 82%, transparent);
        backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }
.spec li { display: grid; grid-template-columns: 7.5em 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--hair); }
.spec li:last-child { border-bottom-color: var(--rule); }
.spec dt, .spec .k { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); padding-top: 2px; }
.spec .v { font-size: .96rem; color: var(--ink); }

/* reveal on load: movement only, never opacity, so the text is readable even if
   animations are paused (link previews, screenshots, background tabs) */
.rise { animation: rise .9s cubic-bezier(.2,.8,.2,1) both; }
.d1 { animation-delay: .08s; } .d2 { animation-delay: .16s; } .d3 { animation-delay: .24s; } .d4 { animation-delay: .32s; }
@keyframes rise { from { transform: translateY(14px); } }

/* ---------- doors: the numbered "where to" index ---------- */
.block { padding: clamp(56px, 8vw, 112px) 0; }
.block + .block { padding-top: 0; }
.block h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); line-height: 1.02; margin-bottom: clamp(28px, 4vw, 48px); }
.doors { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.doors li { border-bottom: 1px solid var(--rule); }
.door { position: relative; display: grid; grid-template-columns: 3.4rem minmax(0, 1fr) auto 2.4rem; gap: 10px clamp(16px, 3vw, 40px);
        align-items: center; padding: clamp(20px, 2.6vw, 30px) clamp(6px, 1.4vw, 18px); text-decoration: none; color: var(--ink);
        isolation: isolate; overflow: hidden; transition: color .35s ease; }
.door::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--fill);
                transform: scaleX(0); transform-origin: left; transition: transform .5s cubic-bezier(.7,0,.2,1); }
.door:hover, .door:focus-visible { color: var(--on-accent); }
.door:hover::before, .door:focus-visible::before { transform: scaleX(1); }
.door:focus-visible { outline-offset: -2px; }
.door .n { font-family: var(--mono); font-size: .82rem; color: var(--ink-3); transition: color .35s ease; }
.door .t { font-family: var(--serif); font-size: clamp(1.6rem, 3.3vw, 2.7rem); line-height: 1.05; letter-spacing: -.02em; display: block; }
.door .t em { font-style: italic; }
.door .d { display: block; margin-top: 6px; color: var(--ink-2); font-size: .98rem; max-width: 40em; transition: color .35s ease; }
.door .m { font-family: var(--mono); font-size: .76rem; letter-spacing: .04em; color: var(--ink-3); text-align: right; white-space: nowrap; transition: color .35s ease; }
.door .a { font-size: 1.6rem; line-height: 1; justify-self: end; transition: transform .45s cubic-bezier(.2,.8,.2,1); }
.door:hover .n, .door:hover .d, .door:hover .m, .door:focus-visible .n, .door:focus-visible .d, .door:focus-visible .m { color: inherit; }
.door:hover .a { transform: translateX(6px); }
.door[data-ext]:hover .a { transform: translate(4px, -4px); }
.door.soon { color: var(--ink-3); cursor: default; }
.door.soon::before { display: none; }
.door.soon .t { font-style: italic; }
.door.soon:hover .n, .door.soon:hover .d, .door.soon:hover .m { color: var(--ink-3); }
.door.soon .d { color: var(--ink-3); }

/* ---------- now ---------- */
.now { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 6vw, 96px);
       border-top: 1px solid var(--rule); padding-top: clamp(28px, 4vw, 44px); }
.now h2 { margin: 0; font-style: italic; }
.now .stamp { display: block; margin-top: 12px; color: var(--ink-3); }
.now ul { list-style: none; margin: 0; padding: 0; }
.now li { position: relative; padding: 0 0 18px 34px; font-size: clamp(1.02rem, 1.4vw, 1.18rem); color: var(--ink-2); }
.now li::before { content: ""; position: absolute; left: 0; top: .78em; width: 20px; height: 1px; background: var(--accent); }
.now li b { color: var(--ink); font-weight: 500; }

/* ---------- guides index ---------- */
.ghero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(36px, 6vw, 88px); align-items: center;
               padding-top: clamp(56px, 9vw, 120px); padding-bottom: clamp(48px, 7vw, 96px); }
.ghero { border-bottom: 1px solid var(--rule); }
.ghero h1 { font-size: clamp(2.6rem, 6.4vw, 5.6rem); line-height: .98; font-weight: 350; letter-spacing: -.035em; }
.crumbs { display: flex; gap: 10px; align-items: center; margin: 0 0 24px; color: var(--ink-3); }
.crumbs a { text-decoration: none; color: var(--ink-2); }
.crumbs a:hover { color: var(--accent-ink); }

.demo { border: 1px solid var(--rule); background: var(--paper); box-shadow: 10px 10px 0 var(--ink); }
.demo-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 16px; border-bottom: 1px solid var(--rule); }
.demo-bar .mono { color: var(--ink-3); }
.seg { display: inline-flex; border: 1px solid var(--rule); }
.seg button { font: 500 .76rem var(--mono); letter-spacing: .04em; padding: 7px 12px; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--rule); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.demo-body { display: grid; grid-template-columns: minmax(0, 1fr); }
.demo-body > * { grid-area: 1 / 1; min-width: 0; }
.js .demo-body > [hidden] { display: block; visibility: hidden; opacity: 0; }
.demo-body > * { transition: opacity .35s ease; }
.pane-sql { background: var(--code-bg); color: var(--code-ink); }
.pane-sql pre { margin: 0; padding: 22px 22px 24px; overflow-x: auto; font: 400 .86rem/1.85 var(--mono); }
.pane-sql .k { color: #6fd0f6; } .pane-sql .s { color: #a8e6cf; } .pane-sql .n { color: #c5b8ff; } .pane-sql .c { color: #7b91a3; }
.pane-gui { padding: 18px 20px 20px; display: grid; gap: 10px; align-content: start; }
.pane-gui .t { font-family: var(--serif); font-size: 1.2rem; margin: 0 0 4px; }
.pane-gui .f { display: grid; grid-template-columns: 7.6em 1fr; gap: 10px; align-items: center; font-size: .86rem; }
.pane-gui .f span { color: var(--ink-3); font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; }
.pane-gui .f b { font-weight: 500; padding: 6px 10px; border: 1px solid var(--hair); background: var(--paper-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pane-gui .sel::after { content: "  \25BE"; color: var(--ink-3); }
.pane-gui .go { justify-self: end; margin-top: 6px; padding: 8px 16px; background: var(--fill); color: var(--on-accent); font-weight: 600; font-size: .84rem; }
.demo-foot { display: flex; justify-content: space-between; gap: 10px; padding: 10px 16px; border-top: 1px solid var(--rule); color: var(--ink-3); }
.demo-foot b { color: var(--accent-ink); font-weight: 500; }

.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); }
.steps li { padding: 22px clamp(14px, 2vw, 26px) 6px 0; border-right: 1px solid var(--hair); }
.steps li + li { padding-left: clamp(14px, 2vw, 26px); }
.steps li:last-child { border-right: 0; }
.steps .no { font-family: var(--serif); font-style: italic; font-size: 2.6rem; line-height: 1; color: var(--accent); display: block; margin-bottom: 14px; }
.steps b { display: block; font-weight: 600; margin-bottom: 4px; }
.steps span { color: var(--ink-2); font-size: .94rem; }

.chapters { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.chapters > li { border-bottom: 1px solid var(--rule); }
.chapter { display: grid; grid-template-columns: clamp(4rem, 9vw, 8rem) minmax(0, 1fr) auto; gap: 8px clamp(18px, 3.4vw, 48px);
           padding: clamp(26px, 3.4vw, 42px) 0; text-decoration: none; color: var(--ink); position: relative; }
.chapter .num { font-family: var(--serif); font-weight: 300; font-size: clamp(2.8rem, 6vw, 5rem); line-height: .9; color: var(--ink-3);
                transition: color .3s ease; font-variant-numeric: lining-nums; }
.chapter .eye { display: block; font-family: var(--mono); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 10px; }
.chapter h3 { font-size: clamp(1.8rem, 3.6vw, 3rem); line-height: 1.02; transition: transform .45s cubic-bezier(.2,.8,.2,1); }
.chapter p { margin: 12px 0 0; color: var(--ink-2); max-width: 40em; }
.chapter .tags { margin: 14px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 4px 0; font-family: var(--mono); font-size: .76rem; color: var(--ink-3); }
.chapter .tags li:not(:last-child)::after { content: "/"; margin: 0 .7em; color: var(--hair); }
.chapter .go { align-self: end; font-family: var(--mono); font-size: .8rem; white-space: nowrap; padding: 10px 14px; border: 1px solid var(--rule);
               transition: background .3s ease, color .3s ease, border-color .3s ease; }
.chapter .go::after { content: "\2192"; display: inline-block; margin-left: .5em; transition: transform .3s ease; }
.chapter:hover .num, .chapter:focus-visible .num { color: var(--accent); }
.chapter:hover h3, .chapter:focus-visible h3 { transform: translateX(8px); }
.chapter:hover .go, .chapter:focus-visible .go { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chapter:hover .go::after { transform: translateX(4px); }
.chapter.soon { color: var(--ink-3); }
.chapter.soon h3 { font-style: italic; }
.chapter.soon p { color: var(--ink-3); }

/* ---------- small pages (404, drafts) ---------- */
.solo { min-height: calc(100vh - 69px); display: grid; align-content: center; padding: clamp(48px, 10vw, 120px) 0; }
.solo h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); line-height: 1; font-weight: 350; letter-spacing: -.03em; }
.solo .code { color: var(--accent-ink); margin-bottom: 20px; display: block; }
.btn { display: inline-flex; align-items: center; gap: 10px; margin-top: 30px; padding: 13px 20px; background: var(--ink); color: var(--paper);
       text-decoration: none; font-weight: 600; font-size: .95rem; transition: background .25s ease; }
.btn:hover { background: var(--fill); color: var(--on-accent); }
.draftlist { list-style: none; margin: 34px 0 0; padding: 0; border-top: 1px solid var(--rule); }
.draftlist li { border-bottom: 1px solid var(--rule); }
.draftlist a { display: block; padding: 22px 0; text-decoration: none; }
.draftlist b { display: block; font-family: var(--serif); font-weight: 400; font-size: clamp(1.4rem, 2.6vw, 2rem); letter-spacing: -.02em; }
.draftlist span { display: block; margin-top: 6px; color: var(--ink-2); max-width: 44em; }
.draftlist a:hover b { color: var(--accent-ink); }
.tag-draft { display: inline-block; font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
             background: var(--fill); color: var(--on-accent); padding: 3px 8px; vertical-align: middle; margin-left: 10px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--rule); overflow: hidden; }
.foot .row { display: flex; justify-content: space-between; align-items: baseline; gap: 14px 40px; flex-wrap: wrap; padding-top: 28px; padding-bottom: 18px; }
.foot p { margin: 0; color: var(--ink-3); font-size: .84rem; max-width: 52em; }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot nav a { font-family: var(--mono); font-size: .78rem; color: var(--ink-2); text-decoration: none; }
.foot nav a:hover { color: var(--accent-ink); }
.foot .giant { display: block; font-size: clamp(4.2rem, 19.5vw, 17.5rem); line-height: .9; margin: 0 0 -.07em -.04em; text-decoration: none;
               color: var(--ink); user-select: none; }
.foot .giant .wm { font-weight: 600; letter-spacing: -.055em; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero::after { background: linear-gradient(180deg, transparent 0%, transparent 22%, var(--paper) 60%); }
  .hero .wrap, .ghero .wrap, .now { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li:nth-child(2) { border-right: 0; }
  .steps li:nth-child(3) { padding-left: 0; }
  .steps li:nth-child(n+3) { border-top: 1px solid var(--hair); }
  .demo { box-shadow: 6px 6px 0 var(--ink); }
}
@media (max-width: 720px) {
  :root { --mast-h: 61px; }
  /* the blur sits on a pseudo-element: backdrop-filter on .mast itself would make it the
     containing block of the fixed menu panel and squash the panel into the header */
  .mast { position: sticky; top: 0; z-index: 50; background: transparent; }
  .mast::before { content: ""; position: absolute; inset: 0; z-index: -1; background: color-mix(in srgb, var(--paper) 94%, transparent);
                  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
  .mast .wrap { min-height: 60px; flex-wrap: nowrap; }
  .mast .home { font-size: 1.35rem; }
  .mast nav.full { display: none; }
  .mnav { display: block; }
  .hero .wrap { padding-top: 44px; padding-bottom: 40px; gap: 34px; }
  .hero h1 { font-size: clamp(2.6rem, 11.4vw, 3.6rem); }
  .hero .hi { display: inline-block; line-height: 1.7; padding: 5px 10px; font-size: .72rem; margin-bottom: 22px; }
  .hero .lede { margin-top: 20px; }
  .ghero h1 { font-size: clamp(2.7rem, 12vw, 3.8rem); }
  .block { padding: 56px 0; }
  .block h2 { font-size: clamp(2.2rem, 10vw, 2.8rem); margin-bottom: 26px; }
  .door { padding: 22px 2px; }
  .door .t { font-size: 1.9rem; }
  .door:active { color: var(--on-accent); }
  .door:active::before { transform: scaleX(1); transition-duration: .2s; }
  .door:active .n, .door:active .d, .door:active .m { color: inherit; }
  .now li { padding-left: 30px; }
  .demo-bar { padding: 8px 8px 8px 12px; }
  .pane-sql pre { padding: 18px 16px 20px; font-size: .78rem; }
  .pane-gui .f { grid-template-columns: 6.6em minmax(0, 1fr); }
  .foot .row { padding-top: 24px; }
  .foot .giant { font-size: 20.5vw; margin-top: 14px; }
}
@media (max-width: 640px) {
  .door { grid-template-columns: 2.2rem minmax(0, 1fr) 1.6rem; }
  .door .m { grid-column: 2; grid-row: 2; text-align: left; }
  .door .a { grid-column: 3; grid-row: 1; }
  .chapter { grid-template-columns: minmax(0, 1fr); }
  .chapter .num { font-size: 2.4rem; }
  .chapter .go { justify-self: start; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .steps li, .steps li + li { padding-left: 0; border-right: 0; }
  .steps li + li { border-top: 1px solid var(--hair); }
  .mast .clock { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  .hero canvas, .mast nav, .foot .giant { display: none; }
  .hero { background: none; }
}