/* Layout: one dark loam page; every section is a bordered card on the same 12-column grid. The hero card carries a live fader board (the Five Levers); rust is rationed the way the book rations ticket orange. */
:root {
  --loam: #161411;
  --bark: #1f1c18;
  --root: #29251f;
  --line: #3b352c;
  --line-hi: #5a5144;
  --paper: #ede6d9;
  --dust: #a99f8f;
  --rust: #d9673d;
  --rust-deep: #9e4424;
  --steel: #8aa6c1;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --wide: 76rem;
  --radius: 6px;
  color-scheme: dark;
}
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { background: var(--loam); color: var(--paper); font: 400 1.0625rem/1.65 var(--serif); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--loam); }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--rust); outline-offset: 3px; }
.wrap { max-width: var(--wide); margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.label { font: 500 0.72rem/1.2 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dust); }
.label.rust { color: var(--rust); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; margin: 0; text-wrap: balance; letter-spacing: -0.012em; }
h1 { font-size: clamp(2.5rem, 6.4vw, 4.9rem); line-height: 1.02; font-variation-settings: "opsz" 60; }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); line-height: 1.06; font-variation-settings: "opsz" 48; }
h3 { font-size: 1.35rem; line-height: 1.2; }
p { margin: 0; }
em.ital { font-style: italic; color: var(--rust); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 0.6rem; font: 500 0.82rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; padding: 0.95rem 1.2rem; border-radius: var(--radius); border: 1px solid var(--line-hi); color: var(--paper); background: transparent; cursor: pointer; transition: background .2s, border-color .2s, transform .2s, color .2s; }
.btn:hover { border-color: var(--paper); transform: translateY(-1px); }
.btn.solid { background: var(--rust); border-color: var(--rust); color: #170d08; }
.btn.solid:hover { background: #e57a52; border-color: #e57a52; }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }
@media (prefers-reduced-motion: reduce) { .btn, .btn .arr { transition: none; } .btn:hover { transform: none; } .btn:hover .arr { transform: none; } }

/* header */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--loam) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.8rem; }
.logo { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.logo svg { width: 2.2rem; height: 1.5rem; flex: none; }
.logo b { font: 700 1.25rem/1 var(--serif); letter-spacing: -0.01em; }
.logo span { font: 500 0.62rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--dust); display: block; margin-top: 0.25rem; }
.menu { display: flex; align-items: center; gap: 0.3rem; }
.menu a { font: 500 0.74rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; color: var(--dust); padding: 0.7rem 0.75rem; border-radius: var(--radius); transition: color .2s, background .2s; }
.menu a:hover, .menu a[aria-current="true"] { color: var(--paper); background: var(--bark); }
.menu .btn { margin-left: 0.4rem; padding: 0.75rem 1rem; }
.menu-toggle { display: none; font: 500 0.74rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--paper); background: transparent; border: 1px solid var(--line-hi); border-radius: var(--radius); padding: 0.7rem 0.9rem; cursor: pointer; }

/* cards */
main { display: grid; gap: clamp(1rem, 2.2vw, 1.5rem); padding-block: clamp(1rem, 2.4vw, 1.75rem) 3rem; }
.card { background: var(--bark); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.3rem, 3.4vw, 2.6rem); position: relative; min-width: 0; }
.card-head { display: grid; gap: 0.8rem; max-width: 46rem; margin-bottom: clamp(1.4rem, 3vw, 2.2rem); }
.card-head p { color: var(--dust); font-size: 1.1rem; }
.lift { animation: lift .7s cubic-bezier(.2,.7,.2,1) both; }
.lift.on { animation: lift-in .7s cubic-bezier(.2,.7,.2,1) both; }
@keyframes lift-in { from { transform: translateY(14px); } to { transform: none; } }
@keyframes lift { from { transform: none; } to { transform: none; } }
@media (prefers-reduced-motion: reduce) { .lift.on { animation: none; } }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(1.6rem, 4vw, 3.4rem); align-items: center; overflow: hidden; }
.hero .copy { display: grid; gap: 1.4rem; }
.hero .sub { font-size: clamp(1.1rem, 1.8vw, 1.28rem); color: var(--dust); max-width: 36rem; }
.hero .sub b { color: var(--paper); font-weight: 600; }
.hero .ctas { display: flex; gap: 0.7rem; flex-wrap: wrap; margin-top: 0.4rem; }
.hero .meta { display: flex; gap: 1.4rem; flex-wrap: wrap; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.hero .meta div { display: grid; gap: 0.25rem; }
.hero .meta b { font: 600 1.5rem/1 var(--serif); font-variant-numeric: tabular-nums; }
.board { background: var(--loam); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.2rem 1.1rem; display: grid; gap: 1rem; }
.board-top { display: flex; justify-content: space-between; gap: 1rem; }
.faders { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.4rem; }
.fader { display: grid; justify-items: center; gap: 0.6rem; background: none; border: 0; color: inherit; cursor: pointer; padding: 0.3rem 0; font: inherit; border-radius: var(--radius); }
.track { position: relative; width: 4px; height: 9.5rem; background: var(--line); border-radius: 4px; }
.track::before { content: ""; position: absolute; left: 50%; top: 8%; bottom: 8%; width: 18px; transform: translateX(-50%); background: repeating-linear-gradient(to bottom, var(--line) 0 1px, transparent 1px 14px); }
.knob { position: absolute; left: 50%; bottom: var(--pos, 50%); width: 30px; height: 15px; transform: translate(-50%, 50%); background: #3a342b; border: 1px solid var(--line-hi); border-radius: 3px; transition: bottom 1.1s cubic-bezier(.4,0,.2,1), background .3s, border-color .3s, box-shadow .3s; }
.knob::after { content: ""; position: absolute; left: 4px; right: 4px; top: 6px; height: 1px; background: var(--dust); }
.fader .nm { font: 500 0.62rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--dust); transition: color .3s; }
.fader.lit .knob { background: var(--rust); border-color: var(--rust); box-shadow: 0 0 18px color-mix(in srgb, var(--rust) 45%, transparent); }
.fader.lit .knob::after { background: #170d08; }
.fader.lit .nm { color: var(--rust); }
.fader.lit .track { background: color-mix(in srgb, var(--rust) 55%, var(--line)); }
.readout { border-top: 1px dashed var(--line-hi); padding-top: 0.9rem; min-height: 6.2rem; display: grid; gap: 0.35rem; }
.readout .q { font: 400 1rem/1.4 var(--serif); }
.readout .mv { font: 400 0.8rem/1.5 var(--mono); color: var(--steel); }
@media (prefers-reduced-motion: reduce) { .knob, .fader .nm { transition: none; } }

/* ideas */
.ideas { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.idea { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; display: grid; gap: 0.9rem; align-content: start; background: var(--loam); transition: border-color .25s, transform .25s, background .25s; }
.idea:hover { border-color: var(--line-hi); transform: translateY(-3px); background: var(--root); }
.idea svg { width: 2.6rem; height: 2.6rem; stroke: var(--rust); fill: none; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.idea svg .draw { stroke-dasharray: 120; stroke-dashoffset: 0; }
.idea:hover svg .draw { animation: draw 1.1s ease both; }
@keyframes draw { from { stroke-dashoffset: 120; } to { stroke-dashoffset: 0; } }
.idea p { color: var(--dust); font-size: 1rem; }
.idea .formula { font: 500 0.82rem/1.5 var(--mono); color: var(--paper); background: var(--bark); border: 1px solid var(--line); border-radius: 4px; padding: 0.55rem 0.7rem; }
.card-foot { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 1.6rem; padding-top: 1.3rem; border-top: 1px solid var(--line); }
.card-foot p { color: var(--dust); max-width: 38rem; }
@media (prefers-reduced-motion: reduce) { .idea, .idea:hover { transition: none; transform: none; } .idea:hover svg .draw { animation: none; } }

/* design */
.design { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; counter-reset: d; }
.dcard { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem; display: grid; gap: 0.8rem; align-content: start; background: var(--loam); position: relative; overflow: hidden; }
.dcard::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--rust); transform: scaleX(0); transform-origin: left; transition: transform .5s ease; }
.dcard:hover::after { transform: scaleX(1); }
.dcard .n { font: 600 2.4rem/1 var(--serif); color: var(--line-hi); font-variant-numeric: tabular-nums; transition: color .3s; }
.dcard:hover .n { color: var(--rust); }
.dcard p { color: var(--dust); font-size: 0.98rem; }
.design-note { margin-top: 1.4rem; font: 600 clamp(1.15rem, 2.2vw, 1.45rem)/1.35 var(--serif); font-style: italic; max-width: 50rem; }
@media (prefers-reduced-motion: reduce) { .dcard::after { transition: none; } }

/* project management */
.pm { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr); gap: clamp(1.4rem, 3.4vw, 3rem); }
.steps { list-style: none; margin: 0; padding: 0; position: relative; display: grid; gap: 0; }
.steps::before { content: ""; position: absolute; left: 1.05rem; top: 1rem; bottom: 1rem; width: 1px; background: var(--line-hi); }
.steps::after { content: ""; position: absolute; left: calc(1.05rem - 3px); top: 1rem; width: 7px; height: 7px; border-radius: 50%; background: var(--rust); box-shadow: 0 0 12px var(--rust); opacity: 0; }
.steps.on::after { animation: travel 4.5s ease-in-out infinite; }
@keyframes travel { 0% { top: 1rem; opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { top: calc(100% - 1.4rem); opacity: 0; } }
.steps li { display: grid; grid-template-columns: 2.1rem minmax(0, 1fr); gap: 1rem; padding: 0.85rem 0; }
.steps .dot { width: 2.1rem; height: 2.1rem; border-radius: 50%; border: 1px solid var(--line-hi); background: var(--bark); display: grid; place-items: center; font: 600 0.72rem/1 var(--mono); color: var(--paper); position: relative; z-index: 1; }
.steps b { font: 600 1.12rem/1.3 var(--serif); display: block; }
.steps span { color: var(--dust); font-size: 0.98rem; display: block; margin-top: 0.15rem; }
.steps .ch { font: 500 0.68rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); margin-top: 0.45rem; }
.engine { border: 1px solid var(--line); border-radius: var(--radius); background: var(--loam); padding: 1.4rem; display: grid; gap: 1rem; align-content: start; }
.engine ul { list-style: none; margin: 0; padding: 0; display: grid; }
.engine li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); font: 400 0.84rem/1.4 var(--mono); }
.engine li:last-child { border-bottom: 0; }
.engine li i { font-style: normal; color: var(--steel); white-space: nowrap; }
.engine .q { font-size: 1.05rem; }
@media (prefers-reduced-motion: reduce) { .steps.on::after { animation: none; } }

/* insight: kill sheet */
.ks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.6rem 1rem; }
.ks details { border: 1px solid var(--line); border-radius: var(--radius); background: var(--loam); transition: border-color .2s; }
.ks details[open] { border-color: var(--line-hi); }
.ks summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) 1rem; gap: 0.8rem; align-items: start; padding: 1rem 1.1rem; }
.ks summary::-webkit-details-marker { display: none; }
.ks .kn { font: 600 1.25rem/1.1 var(--serif); color: var(--rust); font-variant-numeric: tabular-nums; }
.ks .kq b { font: 500 0.7rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); display: block; margin-bottom: 0.35rem; }
.ks .kq { font-size: 1rem; line-height: 1.45; }
.ks .plus { font: 500 1rem/1.2 var(--mono); color: var(--dust); transition: transform .25s; }
.ks details[open] .plus { transform: rotate(45deg); color: var(--rust); }
.ks .body { padding: 0 1.1rem 1.1rem calc(1.1rem + 3.2rem); display: grid; gap: 0.7rem; }
.ks .body div { display: grid; gap: 0.2rem; }
.ks .body i { font: 500 0.66rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; font-style: normal; color: var(--dust); }
.ks .body .no { font-style: italic; color: var(--dust); }
@media (prefers-reduced-motion: reduce) { .ks .plus { transition: none; } }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(1.4rem, 3.4vw, 3rem); align-items: start; }
.doors { display: grid; gap: 0.8rem; }
.door { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.3rem 1rem; align-items: center; padding: 1.1rem 1.2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--loam); text-decoration: none; transition: border-color .2s, background .2s; }
.door:hover { border-color: var(--rust); background: var(--root); }
.door b { font: 600 1.1rem/1.25 var(--serif); }
.door span { grid-column: 1; color: var(--dust); font-size: 0.95rem; }
.door .go { grid-row: 1 / span 2; grid-column: 2; font: 500 0.75rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--rust); }
.address { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding: 1rem 1.2rem; border: 1px dashed var(--line-hi); border-radius: var(--radius); font: 400 0.88rem/1.5 var(--mono); }
.address .btn { padding: 0.65rem 0.9rem; font-size: 0.7rem; }
.copied { font: 400 0.75rem/1.2 var(--mono); color: var(--steel); min-height: 1em; }

footer { padding-block: 1.6rem 2.6rem; border-top: 1px solid var(--line); }
footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font: 400 0.74rem/1.6 var(--mono); color: var(--dust); }

@media (max-width: 960px) {
  .hero, .pm, .contact { grid-template-columns: minmax(0, 1fr); }
  .design { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ideas { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .menu-toggle { display: inline-flex; }
  .menu { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0; background: var(--loam); border-bottom: 1px solid var(--line); padding: 0.4rem max(16px, env(safe-area-inset-right, 0px)) 1rem max(16px, env(safe-area-inset-left, 0px)); }
  .menu.open { display: flex; }
  .menu a { padding: 0.95rem 0.4rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .menu .btn { margin: 0.8rem 0 0; justify-content: center; border-bottom: 1px solid var(--rust); }
  .ks { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  .design { grid-template-columns: minmax(0, 1fr); }
  .track { height: 7.5rem; }
  .knob { width: 24px; }
  .fader .nm { font-size: 0.52rem; letter-spacing: 0.02em; }
  .ks .body { padding-left: 1.1rem; }
  .logo span { display: none; }
}
/* sign-up form */
.ksform { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.4rem 2.4rem; align-items: start; margin-top: 1.6rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.ksform p { color: var(--dust); }
.ksform form { display: grid; gap: 0.7rem; }
.ksform label.lbl { font: 500 0.72rem/1.2 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dust); }
.field { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.field input { flex: 1 1 13rem; min-width: 0; font: 400 0.95rem/1 var(--mono); padding: 0.9rem 1rem; border: 1px solid var(--line-hi); border-radius: var(--radius); background: var(--loam); color: var(--paper); }
.field input:focus { border-color: var(--rust); outline: none; }
.check { display: grid; grid-template-columns: 1.1rem minmax(0, 1fr); gap: 0.6rem; align-items: start; font-size: 0.95rem; color: var(--dust); cursor: pointer; }
.check input { width: 1.05rem; height: 1.05rem; margin: 0.2rem 0 0; accent-color: var(--rust); }
.fine { font: 400 0.75rem/1.5 var(--mono); color: var(--dust); }
.fine a { color: var(--paper); }
.note { font: 400 0.8rem/1.4 var(--mono); color: var(--steel); min-height: 1.2em; }
/* legal */
.legal { display: grid; gap: 0.8rem; }
.legal details { border: 1px solid var(--line); border-radius: var(--radius); background: var(--loam); }
.legal summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.1rem 1.2rem; }
.legal summary::-webkit-details-marker { display: none; }
.legal summary b { font: 600 1.2rem/1.2 var(--serif); }
.legal summary .plus { font: 500 1rem/1 var(--mono); color: var(--dust); transition: transform .25s; }
.legal details[open] summary .plus { transform: rotate(45deg); color: var(--rust); }
.legal .ltext { padding: 0 1.2rem 1.4rem; display: grid; gap: 1rem; max-width: 48rem; }
.lsec { display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: 0.8rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.lsec .ln { font: 500 0.75rem/1.6 var(--mono); color: var(--rust); }
.lsec h3 { font-size: 1.08rem; margin-bottom: 0.4rem; }
.lsec p, .lsec li { color: var(--dust); font-size: 0.98rem; }
.lsec p + p { margin-top: 0.5rem; }
.lsec ul, .lsum ul { margin: 0.3rem 0 0.5rem; padding-left: 1.1rem; display: grid; gap: 0.3rem; }
.lsec a { color: var(--paper); }
.lsum { border: 1px dashed var(--line-hi); border-radius: var(--radius); padding: 1rem 1.1rem; }
.lsum li { color: var(--paper); font-size: 0.98rem; }
footer a { color: var(--paper); text-decoration: none; border-bottom: 1px solid var(--line-hi); }
footer a:hover { border-bottom-color: var(--rust); }
@media (max-width: 860px) { .ksform { grid-template-columns: minmax(0, 1fr); } }
@media (prefers-reduced-motion: reduce) { .legal summary .plus { transition: none; } }