/* ─────────────────────────────────────────────────────────────────────────
   The Ladder — tier spine, step cards, step detail.
   ───────────────────────────────────────────────────────────────────────── */

/* ── Hero ─────────────────────────────────────────────────────────────── */
.hero { padding: 68px 0 46px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 380px at 12% -8%, var(--ember-soft), transparent 62%),
    radial-gradient(700px 340px at 92% 4%, var(--t3-soft), transparent 60%);
  opacity: .75; pointer-events: none;
}
.hero > * { position: relative; }
.hero-kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.hero h1 { max-width: 15ch; margin-bottom: 20px; }
.hero .lede { max-width: 62ch; margin-bottom: 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }

.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--r-lg); overflow: hidden; }
.stat { background: var(--paper); padding: 18px 20px; }
.stat-n { font-family: var(--serif); font-size: 30px; font-weight: 900; color: var(--ink); line-height: 1; letter-spacing: -.03em; }
.stat-l { font-size: 12px; font-weight: 600; color: var(--muted); margin-top: 6px; }

/* ── Tier spine ───────────────────────────────────────────────────────── */
.tier-list { display: flex; flex-direction: column; gap: 0; }
.tier-block { position: relative; padding-left: 62px; padding-bottom: 34px; }
.tier-block::before {
  content: ""; position: absolute; left: 21px; top: 8px; bottom: -8px; width: 2px;
  background: linear-gradient(var(--tier), color-mix(in srgb, var(--tier) 18%, transparent));
}
.tier-block:last-child::before { bottom: 40px; }
.tier-dot {
  position: absolute; left: 8px; top: 2px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--tier); color: #fff; display: grid; place-items: center;
  font-family: var(--mono); font-size: 12px; font-weight: 600; z-index: 1;
  box-shadow: 0 0 0 4px var(--bg);
}
.tier-head { margin-bottom: 6px; }
.tier-name { font-family: var(--serif); font-size: 25px; font-weight: 900; color: var(--ink); letter-spacing: -.025em; }
.tier-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 8px 0 12px; }
.tier-what { color: var(--muted); max-width: 74ch; margin-bottom: 16px; }
.tier-gate {
  background: var(--tier-soft); border-left: 3px solid var(--tier);
  padding: 11px 15px; border-radius: 0 var(--r-sm) var(--r-sm) 0; margin-bottom: 18px;
  font-size: 13.5px; max-width: 74ch;
}
.tier-gate b { color: var(--ink); }

/* ── Step cards ───────────────────────────────────────────────────────── */
.step-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 12px; }
.step-card {
  background: var(--paper); border: 1px solid var(--hairline); border-radius: var(--r-md);
  padding: 14px 16px; display: block; position: relative;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.step-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--tier); }
.step-card.is-done { border-color: color-mix(in srgb, var(--green) 45%, var(--hairline)); background: color-mix(in srgb, var(--green-soft) 40%, var(--paper)); }
.step-card.is-ready::after {
  content: ""; position: absolute; top: 12px; right: 12px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--ember);
}
.step-id { font-family: var(--mono); font-size: 10.5px; font-weight: 600; color: var(--subtle); letter-spacing: .04em; }
.step-name { font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--ink); margin: 3px 0 5px; line-height: 1.25; }
.step-goal { font-size: 13px; color: var(--muted); line-height: 1.5; }
.step-foot { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; align-items: center; }
.step-check {
  position: absolute; bottom: 12px; right: 12px; width: 22px; height: 22px; border-radius: 6px;
  border: 1.5px solid var(--hairline); background: var(--bg-2); display: grid; place-items: center;
  color: transparent; font-size: 12px;
}
.step-card.is-done .step-check { background: var(--green); border-color: var(--green); color: #fff; }

/* ── Domain tags ──────────────────────────────────────────────────────── */
.dom {
  display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 700;
  color: var(--muted); text-transform: uppercase; letter-spacing: .07em;
}

/* ── Filter bar ───────────────────────────────────────────────────────── */
.filterbar {
  position: sticky; top: var(--nav-h); z-index: 40; background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline); padding: 11px 0; margin-bottom: 30px;
}
.filterbar-inner { display: flex; gap: 8px; align-items: center; overflow-x: auto; scrollbar-width: none; }
.filterbar-inner::-webkit-scrollbar { display: none; }
.filter-label { font-size: 11.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--subtle); flex-shrink: 0; }

/* ── Step detail page ─────────────────────────────────────────────────── */
.step-hero { padding: 34px 0 22px; border-bottom: 1px solid var(--hairline); margin-bottom: 30px; }
.crumb { display: flex; gap: 7px; align-items: center; font-size: 12.5px; color: var(--muted); margin-bottom: 14px; flex-wrap: wrap; }
.crumb a:hover { color: var(--ember-2); }
.crumb span { color: var(--subtle); }
.step-title { font-size: clamp(27px, 4.2vw, 40px); font-weight: 900; letter-spacing: -.03em; margin-bottom: 12px; }
.step-lede { font-size: 17px; color: var(--body); max-width: 68ch; margin-bottom: 16px; }

.detail-cols { display: grid; grid-template-columns: minmax(0,1fr) 306px; gap: 40px; align-items: start; }
.rail { position: sticky; top: calc(var(--nav-h) + 20px); display: flex; flex-direction: column; gap: 14px; }
.rail-card { background: var(--paper); border: 1px solid var(--hairline); border-radius: var(--r-md); padding: 15px 17px; }
.rail-title { font-size: 11px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; color: var(--subtle); margin-bottom: 10px; }
.rail-row { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: 13.5px; border-bottom: 1px solid var(--divider); }
.rail-row:last-child { border-bottom: 0; }
.rail-row dt { color: var(--muted); flex-shrink: 0; }
.rail-row dd { color: var(--ink); font-weight: 600; text-align: right; }
.rail-list { display: flex; flex-direction: column; gap: 3px; }
.rail-link { display: flex; gap: 8px; align-items: baseline; padding: 6px 8px; border-radius: var(--r-sm); font-size: 13px; transition: background .13s; }
.rail-link:hover { background: var(--divider); }
.rail-link .step-id { flex-shrink: 0; }
.rail-link span { color: var(--ink); }

.sec-block { margin-bottom: 34px; }
.sec-block > h2 {
  font-size: 13px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase;
  color: var(--ember); margin-bottom: 14px; padding-bottom: 8px; border-bottom: 1px solid var(--hairline);
}
.proc { counter-reset: p; list-style: none; margin: 0; }
.proc li {
  counter-increment: p; position: relative; padding-left: 40px; margin-bottom: 14px;
  min-height: 26px;
}
.proc li::before {
  content: counter(p); position: absolute; left: 0; top: 0;
  width: 26px; height: 26px; border-radius: 50%; background: var(--divider); color: var(--ink);
  display: grid; place-items: center; font-family: var(--mono); font-size: 12px; font-weight: 600;
}
.proc li b { color: var(--ink); }

.callout { border-radius: var(--r-md); padding: 14px 17px; font-size: 14px; margin-bottom: 12px; }
.callout-red { background: var(--red-soft); border-left: 3px solid var(--red); }
.callout-green { background: var(--green-soft); border-left: 3px solid var(--green); }
.callout-amber { background: var(--amber-soft); border-left: 3px solid var(--amber); }
.callout b { color: var(--ink); display: block; margin-bottom: 3px; font-size: 13px; }

.kv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.kv { background: var(--bg-2); border: 1px solid var(--hairline); border-radius: var(--r-sm); padding: 11px 13px; }
.kv-k { font-size: 10.5px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--subtle); }
.kv-v { font-size: 15px; font-weight: 700; color: var(--ink); margin-top: 3px; font-family: var(--mono); }

.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--hairline); }
.pager a { display: flex; flex-direction: column; gap: 2px; max-width: 46%; }
.pager .pg-l { font-size: 11.5px; font-weight: 700; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.pager .pg-t { font-family: var(--serif); font-weight: 700; color: var(--ink); font-size: 15px; }
.pager a:hover .pg-t { color: var(--ember-2); }
.pager .pg-next { text-align: right; align-items: flex-end; margin-left: auto; }

/* ── Progress ─────────────────────────────────────────────────────────── */
.prog-bar { height: 6px; border-radius: 999px; background: var(--divider); overflow: hidden; }
.prog-fill { height: 100%; background: var(--tier, var(--ember)); border-radius: 999px; transition: width .3s; }

/* ── Essay pages (constraints / patterns / futures) ───────────────────── */
.essay { max-width: 74ch; }
.essay h2 { font-size: clamp(23px, 3vw, 30px); font-weight: 900; margin: 44px 0 14px; letter-spacing: -.028em; }
.essay h2:first-child { margin-top: 0; }
.essay h3 { font-size: 18.5px; margin: 28px 0 10px; }
.essay p { margin-bottom: 16px; font-size: 16px; line-height: 1.68; }
.essay ul, .essay ol { margin: 0 0 16px 22px; font-size: 16px; line-height: 1.62; }
.essay li { margin-bottom: 9px; }

.law {
  background: var(--paper); border: 1px solid var(--hairline); border-left: 4px solid var(--ember);
  border-radius: 0 var(--r-md) var(--r-md) 0; padding: 20px 24px; margin: 26px 0;
}
.law-n { font-family: var(--mono); font-size: 11px; font-weight: 600; color: var(--ember); letter-spacing: .1em; text-transform: uppercase; }
.law-t { font-family: var(--serif); font-size: 20px; font-weight: 800; color: var(--ink); margin: 5px 0 9px; letter-spacing: -.02em; }

.tbl-wrap { overflow-x: auto; margin-bottom: 20px; border: 1px solid var(--hairline); border-radius: var(--r-md); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 480px; }
table.tbl th {
  text-align: left; padding: 10px 14px; background: var(--bg-2); color: var(--ink);
  font-weight: 700; font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase;
  border-bottom: 1px solid var(--hairline); white-space: nowrap;
}
table.tbl td { padding: 10px 14px; border-bottom: 1px solid var(--divider); vertical-align: top; }
table.tbl tr:last-child td { border-bottom: 0; }
table.tbl td.num { font-family: var(--mono); white-space: nowrap; }

@media (max-width: 900px) {
  .detail-cols { grid-template-columns: 1fr; gap: 26px; }
  .rail { position: static; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .tier-block { padding-left: 0; }
  .tier-block::before { display: none; }
  .tier-dot { position: static; margin-bottom: 10px; box-shadow: none; }
  .step-grid { grid-template-columns: 1fr; }
}