:root { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body { margin: 0; }
img { max-width: 100%; }
[hidden] { display: none !important; }
/* Layout: a single left-aligned column of sections on galvanized steel; the hero pairs the
   thesis with a live bucket listing where a commit lands. */
:root {
  --steel: #e9eef0;      /* page: galvanized sheet */
  --sheet: #f7f9fa;      /* raised surfaces */
  --ink: #12181b;
  --muted: #5a6870;
  --rule: #cdd6da;
  --water: #0a6a86;      /* accent */
  --water-soft: #d6eaf0;
  --amber: #b97806;      /* the moment a ref swaps */
  --amber-soft: #fbedd0;
  --code-bg: #10171a;
  --code-fg: #d9e4e8;
  --code-dim: #7d9099;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --steel: #0e1417; --sheet: #151d21; --ink: #e5ecef; --muted: #93a5ad; --rule: #263238;
    --water: #55b8d4; --water-soft: #13313b; --amber: #f0b43c; --amber-soft: #3a2c10;
    --code-bg: #0a0f11; --code-fg: #d9e4e8; --code-dim: #6d818a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --steel: #0e1417; --sheet: #151d21; --ink: #e5ecef; --muted: #93a5ad; --rule: #263238;
  --water: #55b8d4; --water-soft: #13313b; --amber: #f0b43c; --amber-soft: #3a2c10;
  --code-bg: #0a0f11; --code-fg: #d9e4e8; --code-dim: #6d818a; color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  background: var(--steel); color: var(--ink); font: 400 17px/1.6 var(--body);
  font-variation-settings: "wdth" 100;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: var(--water); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--water); outline-offset: 3px; border-radius: 3px; }
.wrap { max-width: 1120px; margin: 0 auto; }
code, .mono { font-family: var(--mono); font-size: 0.88em; }
p code, li code, td code { background: var(--water-soft); padding: 1px 5px; border-radius: 4px; }

/* top bar */
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px 0; }
.mark { display: flex; align-items: baseline; gap: 10px; font: 800 26px/1 var(--display); font-variation-settings: "wdth" 125; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
.mark small { font: 500 13px/1 var(--mono); color: var(--muted); letter-spacing: 0; }
.bar nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.bar nav a { color: var(--muted); text-decoration: none; }
.bar nav a:hover { color: var(--ink); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; padding-block: 64px 72px; }
.hero h1 {
  font: 800 clamp(40px, 6.2vw, 76px)/0.98 var(--display); font-variation-settings: "wdth" 118;
  letter-spacing: -0.03em; margin: 0 0 22px; text-wrap: balance;
}
.lede { font-size: 20px; line-height: 1.55; color: var(--muted); max-width: 34em; margin: 0 0 28px; }
.lede strong { color: var(--ink); font-weight: 600; }
.install { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.cmd { display: inline-flex; align-items: center; gap: 12px; background: var(--code-bg); color: var(--code-fg); font: 500 15px/1 var(--mono); padding: 14px 16px; border-radius: 8px; min-width: 0; max-width: 100%; overflow-x: auto; }
.cmd span { color: var(--code-dim); }
.btn { font: 600 14px/1 var(--body); border: 1px solid var(--rule); background: var(--sheet); color: var(--ink); padding: 12px 14px; border-radius: 8px; cursor: pointer; }
.btn:hover { border-color: var(--muted); }

/* the bucket */
.bucket { background: var(--code-bg); color: var(--code-fg); border: 1px solid var(--rule); border-radius: 14px; padding: 20px 20px 18px; font: 13.5px/1.75 var(--mono); min-width: 0; box-shadow: 0 30px 60px -30px rgba(10, 30, 40, 0.45); }
.bucket .head { display: flex; justify-content: space-between; gap: 12px; color: var(--code-dim); font-size: 12.5px; margin-bottom: 10px; flex-wrap: wrap; }
.bucket .head b { color: var(--code-fg); font-weight: 600; }
.rows { overflow-x: auto; }
.row { display: grid; grid-template-columns: 1.6em minmax(0, 1fr) auto; gap: 10px; padding: 1px 8px; border-radius: 5px; white-space: nowrap; transition: background 400ms, color 400ms; }
.row .k { overflow: hidden; text-overflow: ellipsis; }
.row .t { color: var(--code-dim); }
.row .i { color: var(--code-dim); }
.row.dir .k { color: var(--code-dim); }
.row.new { background: rgba(85, 184, 212, 0.16); }
.row.new .i { color: #55b8d4; }
.row.ref { color: #f3d58c; }
.row.swap { background: rgba(240, 180, 60, 0.22); }
.row.swap .i { color: #f0b43c; }
.bucket .foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 12px; padding-top: 12px; border-top: 1px solid #22313a; color: var(--code-dim); font-size: 12.5px; flex-wrap: wrap; }
.bucket .foot output { color: #f3d58c; }
@media (prefers-reduced-motion: reduce) { .row { transition: none; } }

/* sections */
section { padding-block: 72px; border-top: 1px solid var(--rule); }
.eyebrow { font: 600 13px/1 var(--mono); color: var(--water); letter-spacing: 0.02em; margin: 0 0 14px; }
h2 { font: 800 clamp(30px, 4vw, 46px)/1.04 var(--display); font-variation-settings: "wdth" 112; letter-spacing: -0.025em; margin: 0 0 18px; max-width: 18em; text-wrap: balance; }
h3 { font: 700 20px/1.25 var(--display); font-variation-settings: "wdth" 105; margin: 0 0 8px; }
.prose { max-width: 40em; color: var(--muted); }
.prose p { margin: 0 0 14px; }
.prose strong { color: var(--ink); font-weight: 600; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; margin-top: 36px; }
.split > * { min-width: 0; }

pre.code { margin: 0; background: var(--code-bg); color: var(--code-fg); border-radius: 12px; padding: 18px 20px; font: 13.5px/1.7 var(--mono); overflow-x: auto; }
pre.code .c { color: var(--code-dim); }
pre.code .k { color: #55b8d4; }
pre.code .a { color: #f3d58c; }

.layout { background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; padding: 18px 20px; font: 14px/1.9 var(--mono); overflow-x: auto; }
.layout .mut { color: var(--amber); font-weight: 600; }
.layout .imm { color: var(--water); }
.layout .note { color: var(--muted); font-family: var(--body); font-size: 13.5px; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: start; }
.steps li::before { counter-increment: s; content: counter(s); font: 700 15px/34px var(--mono); text-align: center; background: var(--water-soft); color: var(--water); border-radius: 50%; width: 34px; height: 34px; }
.steps p { margin: 0; color: var(--muted); }
.steps b { color: var(--ink); }

/* numbers */
.numbers { margin-top: 36px; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font: 600 13px/1.3 var(--mono); color: var(--muted); }
td.p { font-weight: 700; color: var(--ink); }
td .sub { display: block; font-size: 13.5px; color: var(--muted); font-weight: 400; }
.bar-cell { display: grid; gap: 6px; min-width: 200px; }
.meter { height: 8px; background: var(--rule); border-radius: 4px; overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 4px; }
.meter.g i { background: var(--muted); }
.meter.p i { background: var(--water); }
.fine { font-size: 14px; color: var(--muted); max-width: 46em; margin-top: 16px; }

/* features */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 40px; margin-top: 36px; }
.features div { min-width: 0; }
.features p { margin: 0; color: var(--muted); }

/* conventions */
.conv { margin-top: 28px; overflow-x: auto; }
.conv table { min-width: 620px; }
.conv td:first-child { font-family: var(--mono); font-size: 14px; white-space: nowrap; color: var(--water); }
.flow { margin-top: 36px; }

.cta { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: center; }
footer { padding-block: 40px 56px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .hero, .split, .cta { grid-template-columns: minmax(0, 1fr); }
  .features { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-block: 40px 56px; gap: 36px; }
  section { padding-block: 56px; }
}

/* homepage: value prop points */
.points { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 10px; max-width: 34em; }
.points li { position: relative; padding-left: 22px; color: var(--muted); font-size: 17px; }
.points li::before { content: ""; position: absolute; left: 2px; top: 0.62em; width: 8px; height: 8px; border-radius: 2px; background: var(--water); }
.points b { color: var(--ink); font-weight: 600; }

/* hosts and sign-in */
.hosts { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; margin-top: 32px; }
.host-list { min-width: 0; }
.host-list dl { margin: 12px 0 0; display: grid; gap: 0; }
.host-list dt { padding-top: 14px; border-top: 1px solid var(--rule); font-weight: 600; overflow-wrap: anywhere; }
.host-list dt code { background: none; padding: 0; color: var(--water); font-size: 14.5px; }
.host-list dd { margin: 4px 0 14px; color: var(--muted); font-size: 15.5px; }
.soon { font: 600 12px/1 var(--mono); color: var(--amber); background: var(--amber-soft); padding: 3px 7px; border-radius: 4px; margin-left: 6px; }

/* security */
.sec { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 40px; }
.sec li { color: var(--muted); min-width: 0; }
.sec b { display: block; color: var(--ink); font: 700 18px/1.3 var(--display); margin-bottom: 4px; }

/* tutorial */
.tut-intro { padding-block: 56px 24px; max-width: 46em; }
.page-title { font: 800 clamp(40px, 6vw, 68px)/1 var(--display); font-variation-settings: "wdth" 118; letter-spacing: -0.03em; margin: 0 0 18px; }
.tut { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 48px; align-items: start; padding-bottom: 40px; }
.tut-steps { list-style: none; margin: 0; padding: 0; counter-reset: st; display: grid; gap: 0; min-width: 0; }
.step { counter-increment: st; padding-block: 40px; border-top: 1px solid var(--rule); min-width: 0; display: grid; gap: 14px; }
.step > * { margin: 0; min-width: 0; }
.step h2 { font-size: clamp(24px, 2.6vw, 32px); display: flex; gap: 14px; align-items: baseline; }
.step h2::before { content: counter(st, decimal-leading-zero); font: 600 14px/1 var(--mono); color: var(--muted); flex: none; }
.step.on h2::before { color: var(--water); }
.step p { color: var(--muted); max-width: 40em; }
.step h2 code { font-size: 0.85em; background: none; padding: 0; }
.term, .obj pre, .hex { margin: 0; background: var(--code-bg); color: var(--code-fg); border-radius: 10px; padding: 14px 16px; font: 13px/1.65 var(--mono); overflow-x: auto; white-space: pre; }
.term .p { color: var(--code-dim); user-select: none; }
.term .c, .hex .c, .obj .c { color: var(--code-dim); }
.term .ok { color: #7fd4a0; }
.term .no { color: #f08a6c; }
.obj { border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; background: var(--code-bg); }
.obj pre { border-radius: 0; }
.obj-h { font: 600 12.5px/1 var(--mono); color: var(--code-dim); padding: 10px 16px; border-bottom: 1px solid #22313a; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.obj.ref .obj-h { color: #f3d58c; }
.ex { font: 600 11px/1 var(--mono); color: var(--code-bg); background: var(--code-dim); padding: 3px 6px; border-radius: 4px; }
.obj .del { color: #f08a6c; text-decoration: line-through; text-decoration-thickness: 1px; }
.obj .add { color: #7fd4a0; }
.hex .mg { color: #f3d58c; } .hex .vr { color: #f0b43c; } .hex .pa { color: #55b8d4; } .hex .hs { color: #b9a3f5; } .hex .in { color: #7fd4a0; }
.legend { font: 13px/1.6 var(--mono); display: flex; flex-wrap: wrap; gap: 6px 16px; }
.legend span { padding: 1px 6px; border-radius: 4px; background: var(--code-bg); }
.legend .mg { color: #f3d58c; } .legend .vr { color: #f0b43c; } .legend .pa { color: #55b8d4; } .legend .hs { color: #b9a3f5; } .legend .in { color: #7fd4a0; }
table.kv { min-width: 0; font-size: 15px; }
table.kv td.h { font-family: var(--mono); font-size: 13.5px; color: var(--water); }
.tracker { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 24px); padding-top: 40px; min-width: 0; }
.tracker .rows { min-height: 9.5em; }
.row.local { color: var(--code-dim); background: repeating-linear-gradient(135deg, transparent 0 6px, rgba(125, 144, 153, 0.12) 6px 7px); }
.row.empty .k { color: var(--code-dim); font-style: italic; }
.t-nav { display: flex; gap: 8px; }
.tbtn { font: 600 12.5px/1 var(--mono); color: var(--code-fg); background: #1c272c; border: 1px solid #2c3b42; padding: 7px 10px; border-radius: 6px; cursor: pointer; }
.tbtn:hover { border-color: var(--code-dim); }
.inline-ls { display: none; }
@media (max-width: 900px) {
  .hosts, .sec, .tut { grid-template-columns: minmax(0, 1fr); }
  .tracker { display: none; }
  .inline-ls { display: block; }
}