/* ==========================================================================
   Stackly UI Kit — site.css
   Marketing site, docs, blog, auth and utility pages.
   Requires base.css + components.css.
   ========================================================================== */

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur), background-color var(--dur);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header__inner { height: 100%; display: flex; align-items: center; gap: 1.5rem; }
.site-nav { flex: 1; }
.site-nav ul { display: flex; gap: .25rem; list-style: none; padding: 0; }
.site-nav a { display: inline-flex; padding: .45rem .7rem; border-radius: var(--radius-sm); font-weight: 550; color: var(--ink-2); transition: color var(--dur-fast), background-color var(--dur-fast); }
.site-nav a:hover { color: var(--ink); background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"]::after { content: ""; display: block; }
.site-nav__mobile-actions { display: none; }
.site-header__actions { display: flex; align-items: center; gap: .5rem; margin-left: auto; }
.nav-toggle { display: none; }

@media (max-width: 960px) {
  .nav-toggle { display: inline-grid; }
  .site-header__actions .btn-ghost, .site-header__actions .btn-primary { display: none; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 auto 0; z-index: var(--z-drawer);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
    padding: 1rem var(--gutter) 1.5rem;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
    display: none;
  }
  .site-nav.is-open { display: block; animation: menu-in var(--dur) var(--ease); }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { display: flex; padding: .85rem .25rem; font-size: var(--text-md); border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-nav a:hover { background: transparent; }
  .site-nav__mobile-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem; margin-top: 1.25rem; }
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 4rem 0 2rem; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(4, minmax(0, 1fr)); gap: 2rem; }
.footer-about p { color: var(--ink-3); font-size: var(--text-sm); max-width: 34ch; margin-top: .9rem; }
.footer-col h2 { font-size: var(--text-sm); font-weight: 650; margin-bottom: .8rem; }
.footer-col ul { list-style: none; padding: 0; display: grid; gap: .5rem; }
.footer-col a { color: var(--ink-3); font-size: var(--text-sm); }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: center; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--ink-3); font-size: var(--text-sm); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .footer-about { grid-column: 1 / -1; } }

/* ---------- Shared section heading ---------- */
.section-head { display: grid; gap: 1rem; max-width: 720px; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem); }
.section-head p { color: var(--ink-2); font-size: var(--text-md); max-width: 60ch; }
.section-head--split { max-width: none; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: end; gap: 2rem; }
@media (max-width: 860px) { .section-head--split { grid-template-columns: minmax(0, 1fr); gap: 1rem; } }
.section-alt { background: var(--surface); border-block: 1px solid var(--line); }

/* ---------- Hero (home) ---------- */
.hero { padding-top: clamp(3rem, 2rem + 4vw, 6rem); padding-bottom: 3.5rem; overflow: hidden; }
.hero-copy { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 2.5rem 4rem; align-items: end; }
.hero-title { font-size: var(--text-5xl); line-height: 1.0; letter-spacing: -.04em; font-weight: 800; max-width: 14ch; }
.hero-side { display: grid; gap: 1.5rem; padding-bottom: .5rem; }
.hero-side p { font-size: var(--text-md); color: var(--ink-2); line-height: 1.6; }
.hero-cta { display: flex; gap: .75rem; flex-wrap: wrap; }
.hero-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; color: var(--ink-3); font-size: var(--text-sm); }
.hero-meta span { display: inline-flex; align-items: center; gap: .4rem; }
.hero-meta .icon { width: 1rem; height: 1rem; color: var(--brand); }
@media (max-width: 900px) { .hero-copy { grid-template-columns: minmax(0, 1fr); } }

/* The stacked product window — the kit's signature element */
.stage { position: relative; margin-top: clamp(2.5rem, 2rem + 3vw, 4.5rem); padding-top: 28px; }
.stage::before, .stage::after {
  content: ""; position: absolute; left: 50%; border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border: 1px solid var(--line); border-bottom: 0; transform: translateX(-50%);
}
.stage::before { top: 0; width: 88%; height: 60px; background: color-mix(in srgb, var(--brand) 16%, var(--surface)); }
.stage::after { top: 14px; width: 94%; height: 60px; background: color-mix(in srgb, var(--accent) 45%, var(--surface)); }
.mock-window {
  position: relative; z-index: 1;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 1rem; padding: .7rem 1rem; border-bottom: 1px solid var(--line); background: var(--surface); }
.mock-dots { display: flex; gap: 6px; }
.mock-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.mock-crumb { display: flex; align-items: center; gap: .4rem; font-size: var(--text-sm); color: var(--ink-3); min-width: 0; }
.mock-crumb strong { color: var(--ink); font-weight: 650; white-space: nowrap; }
.mock-bar .avatar-stack { margin-left: auto; }
.mock-progress { display: flex; align-items: center; gap: .6rem; font-size: var(--text-xs); color: var(--ink-3); white-space: nowrap; }
.mock-progress .progress { width: 90px; }
.mock-body { display: grid; grid-template-columns: 200px minmax(0, 1fr); min-height: 420px; }
.mock-side { border-right: 1px solid var(--line); padding: 1rem .75rem; background: color-mix(in srgb, var(--surface-2) 50%, var(--surface)); display: grid; align-content: start; gap: .25rem; }
.mock-side span { display: flex; align-items: center; gap: .55rem; padding: .4rem .5rem; border-radius: 6px; font-size: var(--text-sm); color: var(--ink-2); }
.mock-side span.is-active { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: var(--shadow-xs); }
.mock-side .dot { width: 8px; height: 8px; border-radius: 3px; }
.mock-side .sep { height: 1px; background: var(--line); margin: .5rem 0; padding: 0; }
.mock-side .lbl { font-size: var(--text-xs); color: var(--ink-3); padding-top: .25rem; }
.mock-main { padding: 1rem; overflow: hidden; }
.mock-toolbar { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; }
.mock-toolbar .segmented span { padding: .25rem .6rem; font-size: var(--text-xs); }
.board { display: grid; grid-template-columns: repeat(4, minmax(170px, 1fr)); gap: .75rem; align-items: start; }
.board-col { background: var(--surface-2); border-radius: var(--radius-md); padding: .6rem; display: grid; gap: .5rem; min-height: 300px; align-content: start; }
.board-col__head { display: flex; align-items: center; gap: .45rem; padding: .15rem .25rem .3rem; font-size: var(--text-sm); font-weight: 650; }
.board-col__head .count { margin-left: auto; font-size: var(--text-xs); color: var(--ink-3); font-weight: 600; font-variant-numeric: tabular-nums; }
.board-col__head i { width: 8px; height: 8px; border-radius: 50%; }
.task { background: var(--surface); border: 1px solid var(--line); border-radius: 9px; padding: .65rem .7rem; box-shadow: var(--shadow-xs); display: grid; gap: .5rem; }
.task-title { font-size: var(--text-sm); font-weight: 600; line-height: 1.35; }
.task-meta { display: flex; align-items: center; gap: .5rem; font-size: var(--text-xs); color: var(--ink-3); }
.task-meta .avatar { margin-left: auto; }
.task-meta span { display: inline-flex; align-items: center; gap: .25rem; }
.task-meta .icon { width: .8rem; height: .8rem; }
.task-tag { justify-self: start; }
.task.is-done .task-title { color: var(--ink-3); text-decoration: line-through; text-decoration-color: var(--line-strong); }
.task.is-moving { position: relative; z-index: 3; box-shadow: var(--shadow-lg); border-color: var(--brand); }
.task-note { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); }

.sticky-note {
  position: absolute; z-index: 2; left: -12px; bottom: -34px; width: 200px;
  padding: 1rem 1rem 1.1rem; background: var(--accent); color: #2B2100; border-radius: 4px 4px 14px 4px;
  box-shadow: var(--shadow-lg); transform: rotate(-3deg); font-size: var(--text-sm); line-height: 1.45;
}
.sticky-note strong { display: block; font-size: var(--text-base); margin-bottom: .3rem; }
.sticky-note ul { list-style: none; padding: 0; display: grid; gap: .2rem; }
.sticky-note li::before { content: ""; display: inline-block; width: .6rem; height: .6rem; border: 1.5px solid currentColor; border-radius: 2px; margin-right: .45rem; vertical-align: -1px; }
.sticky-note li.done::before { background: currentColor; }

@media (max-width: 1100px) { .mock-body { grid-template-columns: minmax(0, 1fr); } .mock-side { display: none; } .sticky-note { left: auto; right: 16px; } }
@media (max-width: 720px) {
  .mock-bar .avatar-stack, .mock-progress { display: none; }
  .mock-body { min-height: 340px; }
  .board { grid-template-columns: repeat(4, 200px); }
  .sticky-note { display: none; }
  .stage::before { width: 82%; } .stage::after { width: 91%; }
}

/* ---------- Feature bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.bento-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.5rem; display: grid; grid-template-rows: auto auto 1fr; gap: .6rem; min-width: 0; overflow: hidden; }
.bento-item h3 { font-size: var(--text-lg); letter-spacing: -.015em; }
.bento-item p { color: var(--ink-2); font-size: var(--text-base); max-width: 48ch; }
.bento-wide { grid-column: span 2; }
.bento-art { margin-top: 1rem; align-self: end; min-width: 0; }
.bento-brand { background: var(--brand); border-color: var(--brand); color: var(--brand-contrast); }
.bento-brand p { color: color-mix(in srgb, var(--brand-contrast) 82%, transparent); }
@media (max-width: 960px) { .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); } .bento-wide { grid-column: span 2; } }
@media (max-width: 640px) { .bento { grid-template-columns: minmax(0, 1fr); } .bento-wide { grid-column: auto; } }

/* Mini UI pieces used inside bento cells */
.mini-list { display: grid; gap: .4rem; }
.mini-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; gap: .65rem; align-items: center; padding: .55rem .7rem; background: var(--surface-2); border-radius: 8px; font-size: var(--text-sm); }
.mini-row .box { width: .95rem; height: .95rem; border: 1.5px solid var(--line-strong); border-radius: 4px; }
.mini-row .box.on { background: var(--brand); border-color: var(--brand); }
.mini-row .t { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gantt { display: grid; gap: .45rem; }
.gantt-row { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); align-items: center; gap: .5rem; font-size: var(--text-xs); color: var(--ink-3); }
.gantt-track { position: relative; height: 1.25rem; background: repeating-linear-gradient(90deg, transparent 0 calc(20% - 1px), var(--line) calc(20% - 1px) 20%); border-radius: 4px; }
.gantt-bar { position: absolute; top: 3px; bottom: 3px; left: var(--s); width: var(--w); border-radius: 4px; background: var(--c, var(--brand)); }
.rule { display: grid; gap: .4rem; font-size: var(--text-sm); }
.rule > div { display: flex; align-items: center; gap: .5rem; padding: .55rem .7rem; border-radius: 8px; background: var(--surface-2); flex-wrap: wrap; }
.rule b { font-weight: 650; }
.rule .kw { font-size: var(--text-xs); font-weight: 700; color: var(--brand-soft-ink); background: var(--brand-soft); padding: .15rem .45rem; border-radius: 4px; }
.workload { display: grid; gap: .55rem; }
.workload-row { display: grid; grid-template-columns: auto minmax(0, 1fr) 2.5rem; gap: .6rem; align-items: center; font-size: var(--text-xs); color: var(--ink-3); }
.workload-row .progress { height: .45rem; }
.doc-lines { display: grid; gap: .5rem; padding: 1rem; background: var(--surface-2); border-radius: 10px; }
.doc-lines i { display: block; height: .5rem; border-radius: 3px; background: var(--line-strong); }
.doc-lines .h { height: .8rem; width: 55%; background: var(--ink-3); opacity: .6; }
.doc-lines .embed { display: flex; align-items: center; gap: .5rem; height: auto; padding: .45rem .6rem; background: var(--surface); border: 1px solid var(--line); border-radius: 7px; font-size: var(--text-xs); font-style: normal; color: var(--ink-2); }
.digest { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.digest > div { background: color-mix(in srgb, var(--brand-contrast) 10%, transparent); border-radius: 10px; padding: .8rem; font-size: var(--text-xs); }
.digest strong { display: block; font-size: var(--text-xl); letter-spacing: -.02em; }
@media (max-width: 480px) { .digest { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Steps (a real sequence) ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; counter-reset: step; border-top: 1px solid var(--line-strong); }
.step { position: relative; padding: 1.75rem 2rem 0 0; }
.step::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 2rem; height: 2rem; margin-bottom: 1.25rem;
  border-radius: 50%; background: var(--ink); color: var(--ink-inverse); font-weight: 700; font-size: var(--text-sm);
}
.step::after { content: ""; position: absolute; top: -1px; left: 0; width: 2rem; height: 3px; background: var(--brand); }
.step h3 { font-size: var(--text-lg); margin-bottom: .5rem; }
.step p { color: var(--ink-2); max-width: 36ch; }
@media (max-width: 800px) { .steps { grid-template-columns: minmax(0, 1fr); border-top: 0; } .step { padding: 1.5rem 0; border-top: 1px solid var(--line-strong); } }

/* ---------- Integrations ---------- */
.integrations { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .75rem; }
.integration { display: grid; justify-items: start; gap: .75rem; padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); min-width: 0; }
.integration svg { width: 36px; height: 36px; }
.integration span { font-size: var(--text-sm); font-weight: 600; }
.integration small { display: block; font-size: var(--text-xs); color: var(--ink-3); font-weight: 400; }
@media (max-width: 1024px) { .integrations { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .integrations { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- Quote (placeholder testimonial) ---------- */
.quote { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.5rem; max-width: 880px; }
.quote blockquote { font-size: clamp(1.35rem, 1.1rem + 1.1vw, 2rem); line-height: 1.3; letter-spacing: -.02em; font-weight: 600; }
.quote figcaption { display: flex; align-items: center; gap: .8rem; color: var(--ink-3); font-size: var(--text-sm); }
.quote figcaption strong { display: block; color: var(--ink); font-size: var(--text-base); }
.placeholder-flag { display: inline-flex; align-items: center; gap: .4rem; font-size: var(--text-xs); color: var(--ink-3); border: 1px dashed var(--line-strong); padding: .2rem .55rem; border-radius: var(--radius-pill); justify-self: start; }

/* ---------- Pricing ---------- */
.billing-toggle { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.save-note { font-size: var(--text-sm); color: var(--ink-2); }
.pricing-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; align-items: stretch; }
.pricing-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.plan { position: relative; display: flex; flex-direction: column; gap: 1.1rem; padding: 1.5rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); min-width: 0; }
.plan-featured { border: 2px solid var(--ink); box-shadow: var(--shadow-lg); }
.plan-tag { position: absolute; top: -.8rem; left: 1.25rem; }
.plan-name { font-size: var(--text-lg); font-weight: 700; }
.plan-desc { color: var(--ink-3); font-size: var(--text-sm); min-height: 2.6em; }
.plan-price { display: flex; align-items: baseline; gap: .35rem; flex-wrap: wrap; }
.plan-price .amount { font-size: 2.75rem; font-weight: 750; letter-spacing: -.04em; line-height: 1; }
.plan-price .per { color: var(--ink-3); font-size: var(--text-sm); }
.plan-billed { font-size: var(--text-xs); color: var(--ink-3); min-height: 1.2em; margin-top: -.6rem; }
.plan .check-list { font-size: var(--text-sm); color: var(--ink-2); flex: 1; }
.plan-divider { height: 1px; background: var(--line); }
@media (max-width: 1100px) { .pricing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) { .pricing-grid--3 { grid-template-columns: minmax(0, 1fr); max-width: 460px; } }
@media (max-width: 640px) { .pricing-grid { grid-template-columns: minmax(0, 1fr); } }

.compare { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.compare .table { min-width: 760px; font-size: var(--text-base); }
.compare .table th, .compare .table td { padding: .85rem 1.1rem; white-space: normal; }
.compare .table thead th { font-size: var(--text-sm); color: var(--ink); background: var(--surface); border-bottom: 1px solid var(--line-strong); }
.compare .table td:not(:first-child), .compare .table th:not(:first-child) { text-align: center; width: 17%; }
.compare .table .group td { background: var(--surface-2); font-weight: 650; font-size: var(--text-sm); color: var(--ink); }
.compare .table td:first-child { color: var(--ink-2); }
.compare .yes { color: var(--brand); display: inline-block; }
.compare .no { color: var(--ink-3); }
.compare .table th:first-child, .compare .table td:first-child { position: sticky; left: 0; background: var(--surface); z-index: 1; }
.compare .table .group td:first-child { background: var(--surface-2); }
.scroll-hint { display: none; font-size: var(--text-xs); color: var(--ink-3); margin-bottom: .5rem; }
@media (max-width: 800px) { .scroll-hint { display: block; } }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: clamp(2rem, 1.5rem + 3vw, 4rem); background: var(--brand); color: var(--brand-contrast); display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 2rem; align-items: center; }
.cta-band h2 { font-size: var(--text-3xl); letter-spacing: -.03em; line-height: 1.08; }
.cta-band p { color: color-mix(in srgb, var(--brand-contrast) 82%, transparent); margin-top: .75rem; max-width: 46ch; }
.cta-band .btn-secondary { border-color: transparent; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: flex-end; }
.cta-layers { position: absolute; right: -40px; top: -40px; width: 260px; opacity: .18; pointer-events: none; }
@media (max-width: 800px) { .cta-band { grid-template-columns: minmax(0, 1fr); } .cta-band .actions { justify-content: flex-start; } }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: clamp(3rem, 2rem + 4vw, 5.5rem) 0 clamp(2rem, 1.5rem + 2vw, 3rem); }
.page-hero h1 { font-size: var(--text-4xl); letter-spacing: -.035em; line-height: 1.05; font-weight: 800; max-width: 18ch; }
.page-hero .lead { margin-top: 1.1rem; }
.page-hero--center { text-align: center; }
.page-hero--center h1, .page-hero--center .lead { margin-inline: auto; }

/* ---------- Features page ---------- */
.feature-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: center; padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem); border-top: 1px solid var(--line); }
.feature-row:nth-of-type(even) .feature-copy { order: 2; }
.feature-copy { display: grid; gap: 1rem; }
.feature-copy h2 { font-size: var(--text-2xl); letter-spacing: -.025em; line-height: 1.15; }
.feature-copy p { color: var(--ink-2); max-width: 52ch; }
.feature-kicker { display: inline-flex; align-items: center; gap: .5rem; font-weight: 650; font-size: var(--text-sm); color: var(--brand); }
.feature-visual { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1rem, .5rem + 2vw, 2rem); min-width: 0; overflow: hidden; }
.feature-visual .panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: 1rem; }
@media (max-width: 860px) { .feature-row { grid-template-columns: minmax(0, 1fr); } .feature-row:nth-of-type(even) .feature-copy { order: 0; } }
.feature-grid-small { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem 2.5rem; }
.feature-small { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: .9rem; align-items: start; }
.feature-small .ic { width: 2.25rem; height: 2.25rem; border-radius: 9px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand-soft-ink); }
.feature-small h3 { font-size: var(--text-base); font-weight: 650; margin-bottom: .2rem; }
.feature-small p { color: var(--ink-3); font-size: var(--text-sm); }
@media (max-width: 900px) { .feature-grid-small { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .feature-grid-small { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Docs ---------- */
.docs-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr) 200px; gap: 3rem; padding-block: 2.5rem 5rem; align-items: start; }
.docs-nav { position: sticky; top: calc(var(--header-h) + 1.5rem); max-height: calc(100vh - var(--header-h) - 3rem); overflow-y: auto; padding-right: .5rem; }
.docs-nav h2 { font-size: var(--text-sm); font-weight: 650; margin: 1.25rem 0 .4rem; }
.docs-nav h2:first-child { margin-top: 0; }
.docs-nav ul { list-style: none; padding: 0; display: grid; gap: 1px; }
.docs-nav a { display: block; padding: .35rem .7rem; border-radius: 6px; font-size: var(--text-sm); color: var(--ink-2); border-left: 2px solid transparent; }
.docs-nav a:hover { color: var(--ink); background: var(--surface-2); }
.docs-nav a[aria-current="page"] { color: var(--brand-soft-ink); background: var(--brand-soft); font-weight: 600; }
.docs-nav-toggle { display: none; }
.docs-content { min-width: 0; max-width: 760px; }
.docs-toc { position: sticky; top: calc(var(--header-h) + 1.5rem); font-size: var(--text-sm); }
.docs-toc h2 { font-size: var(--text-sm); font-weight: 650; margin-bottom: .6rem; }
.docs-toc ul { list-style: none; padding: 0; border-left: 1px solid var(--line); }
.docs-toc a { display: block; padding: .3rem 0 .3rem .9rem; margin-left: -1px; border-left: 2px solid transparent; color: var(--ink-3); transition: color var(--dur-fast), border-color var(--dur-fast); }
.docs-toc a:hover { color: var(--ink); }
.docs-toc a.is-active { color: var(--brand); border-left-color: var(--brand); font-weight: 600; }
.docs-toc .toc-sub a { padding-left: 1.6rem; }
@media (max-width: 1200px) { .docs-layout { grid-template-columns: 220px minmax(0, 1fr); } .docs-toc { display: none; } }
@media (max-width: 860px) {
  .docs-layout { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-top: 1.5rem; }
  .docs-nav-toggle { display: flex; }
  .docs-nav { position: static; max-height: none; display: none; padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
  .docs-nav.is-open { display: block; }
}

/* ---------- Prose (docs + blog) ---------- */
.prose { color: var(--ink-2); font-size: var(--text-md); line-height: 1.72; }
.prose > * + * { margin-top: 1.1em; }
.prose h1 { color: var(--ink); font-size: var(--text-3xl); letter-spacing: -.03em; line-height: 1.12; }
.prose h2 { color: var(--ink); font-size: var(--text-xl); margin-top: 2.2em; letter-spacing: -.02em; }
.prose h3 { color: var(--ink); font-size: var(--text-lg); margin-top: 1.8em; }
.prose h2 + *, .prose h3 + * { margin-top: .6em; }
.prose a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose strong { color: var(--ink); font-weight: 650; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .4em; }
.prose li::marker { color: var(--ink-3); }
.prose blockquote { border-left: 3px solid var(--accent); padding: .2em 0 .2em 1.2em; color: var(--ink); font-size: var(--text-lg); font-weight: 500; line-height: 1.5; }
.prose .code-block { font-size: var(--text-base); }
.prose .alert { font-size: var(--text-base); }
.prose table { width: 100%; font-size: var(--text-sm); }
.prose .table-wrap { border: 1px solid var(--line); border-radius: var(--radius-md); }
.prose .table th, .prose .table td { white-space: normal; }
.prose figure { margin: 2em 0; }
.prose figcaption { font-size: var(--text-sm); color: var(--ink-3); margin-top: .6rem; }
.endpoint { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; padding: .6rem .8rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); font-family: var(--font-mono); font-size: var(--text-sm); color: var(--ink); }
.method { font-family: var(--font-sans); font-size: var(--text-xs); font-weight: 700; padding: .2rem .45rem; border-radius: 4px; }
.method-get { background: var(--info-soft); color: var(--info); }
.method-post { background: var(--success-soft); color: var(--success); }
.docs-pager { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 3rem; }
.docs-pager a { display: grid; gap: .2rem; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.docs-pager a:hover { border-color: var(--brand); }
.docs-pager small { color: var(--ink-3); font-size: var(--text-xs); }
.docs-pager strong { color: var(--ink); }
.docs-pager a:last-child { text-align: right; }

/* ---------- Blog ---------- */
.blog-filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.blog-featured { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 2.5rem; align-items: center; padding-bottom: 3rem; margin-bottom: 3rem; border-bottom: 1px solid var(--line); }
.blog-featured h2 { font-size: var(--text-3xl); letter-spacing: -.03em; line-height: 1.1; }
.blog-featured h2 a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; }
@media (max-width: 860px) { .blog-featured { grid-template-columns: minmax(0, 1fr); } }
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem 1.5rem; }
@media (max-width: 960px) { .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .post-grid { grid-template-columns: minmax(0, 1fr); } }
.post-card { display: grid; gap: .8rem; align-content: start; min-width: 0; }
.post-card h3 { font-size: var(--text-lg); letter-spacing: -.015em; line-height: 1.3; }
.post-card h3 a { background-image: linear-gradient(currentColor, currentColor); background-size: 0 1.5px; background-repeat: no-repeat; background-position: 0 100%; transition: background-size var(--dur) var(--ease); }
.post-card h3 a:hover { background-size: 100% 1.5px; }
.post-card p { color: var(--ink-2); font-size: var(--text-base); }
.post-cover { display: block; aspect-ratio: 16 / 10; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line); }
.post-cover svg { width: 100%; height: 100%; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem .9rem; font-size: var(--text-sm); color: var(--ink-3); }
.post-meta .author { display: inline-flex; align-items: center; gap: .5rem; color: var(--ink-2); font-weight: 550; }
.article-head { max-width: 760px; margin-inline: auto; padding-top: clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.article-head h1 { font-size: var(--text-4xl); letter-spacing: -.035em; line-height: 1.06; font-weight: 800; margin: 1rem 0; }
.article-cover { max-width: 1000px; margin: 2.5rem auto; aspect-ratio: 21 / 9; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); }
.article-cover svg { width: 100%; height: 100%; }
.article-body { max-width: 700px; margin-inline: auto; }
.article-foot { max-width: 700px; margin: 3rem auto 0; padding-top: 2rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.author-card { display: flex; gap: 1rem; align-items: center; }
.author-card p { font-size: var(--text-sm); color: var(--ink-3); }

/* ---------- Changelog ---------- */
.changelog { max-width: 900px; }
.release { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 2rem; padding: 2.5rem 0; border-top: 1px solid var(--line); }
.release-date { position: sticky; top: calc(var(--header-h) + 1.5rem); align-self: start; display: grid; gap: .5rem; }
.release-date time { font-weight: 650; }
.release h2 { font-size: var(--text-2xl); letter-spacing: -.025em; margin-bottom: .75rem; }
.release .prose { font-size: var(--text-base); }
.release-art { margin: 1.5rem 0; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-2); padding: 1.25rem; }
.change-list { list-style: none; padding: 0; display: grid; gap: .65rem; margin-top: 1.25rem; }
.change-list li { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: .8rem; align-items: baseline; color: var(--ink-2); }
.change-list .badge { justify-self: start; }
@media (max-width: 720px) { .release { grid-template-columns: minmax(0, 1fr); gap: 1rem; } .release-date { position: static; display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; } .change-list li { grid-template-columns: minmax(0, 1fr); gap: .3rem; } }

/* ---------- Contact ---------- */
.contact-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(2rem, 1rem + 4vw, 4.5rem); align-items: start; padding-bottom: 5rem; }
.contact-form { padding: clamp(1.25rem, 1rem + 1.5vw, 2rem); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem; }
.form-grid .span-2 { grid-column: 1 / -1; }
@media (max-width: 600px) { .form-grid { grid-template-columns: minmax(0, 1fr); } .form-grid .span-2 { grid-column: auto; } }
fieldset.field { border: 0; padding: 0; }
fieldset.field legend { padding: 0; margin-bottom: .4rem; }
.radio-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .5rem; }
.radio-card { position: relative; display: flex; gap: .55rem; align-items: center; padding: .65rem .8rem; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--surface); font-size: var(--text-sm); font-weight: 550; cursor: pointer; }
.radio-card:has(input:checked) { border-color: var(--brand); box-shadow: inset 0 0 0 1px var(--brand); background: color-mix(in srgb, var(--brand-soft) 40%, var(--surface)); }
@media (max-width: 600px) { .radio-cards { grid-template-columns: minmax(0, 1fr); } }
.contact-aside { display: grid; gap: 1.5rem; }
.contact-item { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: .9rem; }
.contact-item .ic { width: 2.5rem; height: 2.5rem; border-radius: 10px; display: grid; place-items: center; background: var(--surface); border: 1px solid var(--line); color: var(--brand); }
.contact-item h2 { font-size: var(--text-base); font-weight: 650; }
.contact-item p { color: var(--ink-3); font-size: var(--text-sm); }
@media (max-width: 900px) { .contact-layout { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 404 ---------- */
.error-page { min-height: calc(100vh - var(--header-h) - 1px); display: grid; place-items: center; padding: 4rem 0; text-align: center; }
.error-art { width: min(340px, 80vw); margin: 0 auto 2rem; }
.error-code { font-size: var(--text-sm); font-weight: 650; color: var(--brand); }
.error-page h1 { font-size: var(--text-4xl); letter-spacing: -.035em; margin: .5rem 0 1rem; }
.error-page p { color: var(--ink-2); max-width: 46ch; margin-inline: auto; }
.error-links { display: flex; justify-content: center; gap: .75rem; flex-wrap: wrap; margin-top: 2rem; }

/* ---------- Auth ---------- */
.auth { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); }
.auth-main { display: flex; flex-direction: column; padding: 1.5rem var(--gutter); }
.auth-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.auth-form-wrap { flex: 1; display: grid; place-items: center; padding: 2.5rem 0; }
.auth-form { width: min(400px, 100%); display: grid; gap: 1.25rem; }
.auth-form h1 { font-size: var(--text-2xl); letter-spacing: -.03em; line-height: 1.15; }
.auth-form .sub { color: var(--ink-2); margin-top: .4rem; }
.auth-foot { font-size: var(--text-sm); color: var(--ink-3); text-align: center; }
.sso-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem; }
.auth-aside { position: relative; overflow: hidden; background: var(--brand); color: var(--brand-contrast); padding: clamp(2rem, 1rem + 3vw, 4rem); display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; }
.auth-aside h2 { font-size: var(--text-3xl); letter-spacing: -.03em; line-height: 1.1; max-width: 16ch; }
.auth-aside p { color: color-mix(in srgb, var(--brand-contrast) 80%, transparent); max-width: 42ch; }
.auth-aside .auth-art { width: 100%; max-width: 520px; }
.auth-quote { border-top: 1px solid color-mix(in srgb, var(--brand-contrast) 25%, transparent); padding-top: 1.25rem; font-size: var(--text-sm); }
.auth-quote strong { display: block; font-size: var(--text-base); }
.password-meter { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; margin-top: .15rem; }
.password-meter i { height: 4px; border-radius: 2px; background: var(--surface-3); transition: background-color var(--dur); }
.password-meter[data-score="1"] i:nth-child(-n+1) { background: var(--danger); }
.password-meter[data-score="2"] i:nth-child(-n+2) { background: var(--warning); }
.password-meter[data-score="3"] i:nth-child(-n+3) { background: var(--brand); }
.password-meter[data-score="4"] i { background: var(--success); }
@media (max-width: 960px) { .auth { grid-template-columns: minmax(0, 1fr); } .auth-aside { display: none; } }

/* ---------- Pages index ---------- */
.index-group { margin-top: 3rem; }
.index-group h2 { font-size: var(--text-xl); margin-bottom: 1rem; display: flex; align-items: baseline; gap: .75rem; }
.index-group h2 small { font-size: var(--text-sm); font-weight: 500; color: var(--ink-3); }
.index-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: .75rem; }
.index-card { display: grid; gap: .3rem; padding: 1.1rem 1.2rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); transition: border-color var(--dur-fast), transform var(--dur-fast); }
.index-card:hover { border-color: var(--brand); }
.index-card strong { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.index-card strong .icon { color: var(--ink-3); }
.index-card span { font-size: var(--text-sm); color: var(--ink-3); }
.index-card code { justify-self: start; font-size: var(--text-xs); }

/* Static (non-interactive) segmented control used inside mockups */
.segmented .is-on { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm); }
.board-more { padding: .45rem .7rem; border: 1px dashed var(--line-strong); border-radius: 9px; font-size: var(--text-xs); color: var(--ink-3); }