:root {
    --bg: #123C30;
    --card: #18473a;
    --ink: #ffffff;
    --muted: rgba(255, 255, 255, 0.62);
    --line: rgba(255, 255, 255, 0.14);
    --lime: #c8e86a;
    --ease: cubic-bezier(0.77, 0, 0.18, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    min-height: 100%;
    background: var(--bg);
    color: var(--ink);
    font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9;
    background-image: url("grain.png?v=3");
    background-size: 220px 220px;
    opacity: 0.45;
    mix-blend-mode: soft-light;
}

::selection { background: var(--lime); color: var(--bg); }

a { color: inherit; }

.bar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 18px 28px;
    background: rgba(18, 60, 48, 0.88);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
}

.bar-mark {
    display: flex;
    flex: none;
}

.bar-mark img {
    display: block;
    height: 18px;
    width: auto;
    filter: brightness(0) invert(1);
}

.ways {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.ways a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    padding: 8px 10px;
    border-radius: 999px;
}

.ways a:hover,
.ways a[aria-current="page"] { color: #fff; }

.ways a[aria-current="page"] { background: rgba(255, 255, 255, 0.08); }

.bar-cta,
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: none;
    color: #123c30;
    background: #fff;
    text-decoration: none;
    border-radius: 999px;
    padding: 9px 14px;
    font-size: 13px;
    font-weight: 500;
}

.bar-cta:hover,
.btn:hover { background: #f4f7f5; }

.wrap {
    width: min(1080px, calc(100% - 56px));
    margin: 0 auto;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(240px, 0.85fr);
    gap: 48px;
    align-items: center;
    padding: 96px 0 72px;
}

.kicker {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--lime);
    margin-bottom: 18px;
}

.orb { display: block; flex: none; }

.stage {
    display: grid;
    place-items: center;
    min-height: 240px;
}

h1 {
    font-family: "Instrument Serif", Georgia, serif;
    font-weight: 400;
    font-size: clamp(44px, 5.4vw, 72px);
    line-height: 0.98;
    letter-spacing: -0.035em;
    max-width: 12ch;
}

.lede {
    margin-top: 22px;
    max-width: 38ch;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.5;
}

.hero .btn { margin-top: 28px; }

.anatomy {
    width: min(760px, 100%);
    margin: 80px auto 72px;
}

.anatomy-host {
    display: block;
    width: 100%;
}

.anatomy + .block {
    border-top: 0;
}

.facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 36px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    max-width: 460px;
}

.facts b {
    display: block;
    font-weight: 500;
    font-size: 15px;
    letter-spacing: -0.02em;
}

.facts span {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.4;
}

.panel {
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    padding: 22px;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 28px;
}

.panel-label {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.sprint-days {
    display: grid;
    grid-template-columns: repeat(10, minmax(0, 1fr));
    gap: 6px;
}

.sprint-days span {
    display: grid;
    place-items: center;
    height: 42px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: transparent;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
}

.sprint-rail.is-on .sprint-days span {
    background: #f4f7f5;
    border-color: #f4f7f5;
    color: #123c30;
    transition: background 0.35s var(--ease), border-color 0.35s var(--ease), color 0.35s var(--ease);
    transition-delay: calc(var(--i) * 70ms);
}

.phases {
    display: grid;
    grid-template-columns: 2fr 4fr 4fr;
    gap: 6px;
    margin-top: 12px;
}

.phases span {
    color: var(--muted);
    font-size: 12px;
}

.sprint-rail.is-on .phases span {
    color: #fff;
    transition: color 0.4s var(--ease);
    transition-delay: calc(var(--i) * 0.35s);
}

.cadence { position: relative; padding-top: 8px; }

.cadence-line {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 23px;
    height: 1px;
    background: rgba(255, 255, 255, 0.16);
}

.cadence-line i {
    display: block;
    height: 100%;
    background: #fff;
    transform: scaleX(0);
    transform-origin: left center;
}

.cadence.is-on .cadence-line i {
    transform: scaleX(1);
    transition: transform 1.15s var(--ease);
}

.nodes {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    list-style: none;
}

.nodes li { text-align: center; }

.nodes b {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    margin: 0 auto 12px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: var(--bg);
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    font-weight: 400;
}

.cadence.is-on .nodes b {
    background: #fff;
    border-color: #fff;
    color: #123c30;
    transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
    transition-delay: calc(var(--i) * 0.22s);
}

.nodes span {
    display: block;
    font-size: 13px;
    color: var(--muted);
}

.block .lengths { margin-top: 28px; max-width: 520px; }

.lengths { --len: 8; }
.lengths[data-length="4"] { --len: 4; }
.lengths[data-length="12"] { --len: 12; }

.picks {
    display: flex;
    gap: 8px;
}

.picks button {
    flex: 1;
    appearance: none;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: transparent;
    color: var(--muted);
    border-radius: 999px;
    padding: 8px 10px;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
}

.picks button[aria-pressed="true"] {
    background: #fff;
    border-color: #fff;
    color: #123c30;
}

.picks button:hover { color: #fff; }
.picks button[aria-pressed="true"]:hover { color: #123c30; }

.track {
    position: relative;
    height: 28px;
    margin-top: 22px;
    border-radius: 999px;
    background:
        repeating-linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.28) 0 1px,
            transparent 1px calc(100% / 12)
        );
    overflow: hidden;
}

.track i {
    display: block;
    height: 100%;
    width: calc(var(--len) / 12 * 100%);
    border-radius: inherit;
    background: #f4f7f5;
    transition: width 0.7s var(--ease);
}

.length-note {
    margin-top: 16px;
    min-height: 3.2em;
    color: #fff;
    font-family: "Instrument Serif", Georgia, serif;
    font-size: 26px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.brief { list-style: none; display: flex; flex-direction: column; gap: 16px; }

.brief li {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 12px;
}

.js .brief:not(.is-on) li {
    opacity: 0;
    transform: translateY(8px);
}

.brief.is-on li {
    animation: rise 0.7s var(--ease) forwards;
    animation-delay: calc(0.12s + var(--i) * 0.26s);
}

.brief b {
    display: block;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--lime);
    padding-top: 4px;
}

.brief strong {
    display: block;
    font-weight: 500;
    font-size: 15px;
}

.brief p {
    margin-top: 3px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.45;
}

.strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    padding: 16px 0 88px;
}

.strip b {
    display: block;
    font-weight: 500;
    font-size: 15px;
    letter-spacing: -0.02em;
}

.strip span {
    display: block;
    margin-top: 6px;
    max-width: 28ch;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.45;
}

.notes {
    list-style: none;
    margin-top: 28px;
}

.notes li {
    padding: 16px 0;
    border-top: 1px solid var(--line);
    font-size: 16px;
    line-height: 1.45;
}

.notes li:last-child { border-bottom: 1px solid var(--line); }

.block { padding: 104px 0; border-top: 1px solid var(--line); }

.block h2 {
    font-family: "Instrument Serif", Georgia, serif;
    font-weight: 400;
    font-size: clamp(32px, 4vw, 48px);
    letter-spacing: -0.03em;
    line-height: 1.05;
    max-width: 16ch;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.split .kicker { margin-bottom: 12px; }

.rows { list-style: none; margin-top: 8px; }

.rows li {
    padding: 14px 0;
    border-top: 1px solid var(--line);
    font-size: 15px;
    line-height: 1.45;
}

.rows li:last-child { border-bottom: 1px solid var(--line); }

.leave {
    display: grid;
    grid-template-columns: minmax(220px, 0.7fr) 1.3fr;
    gap: 48px;
}

.leave ol {
    list-style: none;
    counter-reset: item;
}

.leave li {
    counter-increment: item;
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid var(--line);
}

.leave li:last-child { border-bottom: 1px solid var(--line); }

.leave li::before {
    content: counter(item, decimal-leading-zero);
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    color: var(--lime);
    padding-top: 3px;
}

.leave h3 {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.leave p,
.steps p,
.terms p {
    margin-top: 4px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

.run {
    display: grid;
    grid-template-columns: minmax(220px, 0.7fr) 1.3fr;
    gap: 48px;
}

.steps { list-style: none; }

.steps li {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 16px;
    padding: 18px 0;
    border-top: 1px solid var(--line);
}

.steps li:last-child { border-bottom: 1px solid var(--line); }

.js .steps:not(.is-on) li {
    opacity: 0;
    transform: translateY(8px);
}

.steps.is-on li {
    animation: rise 0.65s var(--ease) forwards;
    animation-delay: calc(var(--i) * 90ms);
}

.steps b {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    font-weight: 400;
    color: var(--muted);
    padding-top: 4px;
}

.steps h3 {
    font-family: "Instrument Serif", Georgia, serif;
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.02em;
}

.terms {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    margin-top: 36px;
}

.terms article {
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.terms h3 {
    font-size: 14px;
    font-weight: 500;
}

.plans {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
}

.plans a {
    display: block;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 16px;
    padding: 20px;
}

.plans a:hover { background: rgba(255, 255, 255, 0.04); }

.plans strong {
    display: block;
    font-family: "Instrument Serif", Georgia, serif;
    font-size: 32px;
    font-weight: 400;
}

.plans em {
    display: block;
    margin: 8px 0 12px;
    font-style: normal;
    font-size: 14px;
    color: var(--muted);
}

.plans span { font-size: 14px; }

.pick {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 32px;
}

.pick a {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 148px;
    padding: 18px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    text-decoration: none;
}

.pick a:hover { background: rgba(255, 255, 255, 0.04); }

.pick a[aria-current="page"] {
    background: #fff;
    color: #123c30;
    border-color: #fff;
}

.pick a[aria-current="page"] span { color: rgba(18, 60, 48, 0.62); }

.pick b {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: "Instrument Serif", Georgia, serif;
    font-size: 28px;
    font-weight: 400;
}

.pick span {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.4;
}

.close {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 32px;
}

.close p {
    margin-top: 16px;
    max-width: 36ch;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.5;
}

.site-footer { padding: 40px 0 56px; }

.footer-card {
    width: min(1080px, calc(100% - 56px));
    margin: 0 auto;
    background: var(--card);
    border-radius: 12px;
    padding: 48px;
}

.footer-top {
    display: grid;
    grid-template-columns: minmax(200px, 280px) 1fr;
    gap: 48px 64px;
}

.footer-brand img {
    display: block;
    height: 20px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    margin-top: 16px;
    max-width: 30ch;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
}

.footer-cols {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.footer-cols h2 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-cols ul { list-style: none; }

.footer-cols a {
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    line-height: 2;
}

.footer-cols a:has(.orb) {
    display: inline-flex;
    align-items: center;
    gap: 0;
    line-height: 1;
    margin: 6px 0;
    transition: gap 0.28s var(--ease);
}

.footer-cols a:has(.orb) .orb {
    width: 0 !important;
    opacity: 0;
    overflow: hidden;
    transition: width 0.28s var(--ease), opacity 0.22s ease;
}

.footer-cols a:has(.orb):hover,
.footer-cols a:has(.orb):focus-visible {
    gap: 8px;
}

.footer-cols a:has(.orb):hover .orb,
.footer-cols a:has(.orb):focus-visible .orb {
    width: 20px !important;
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    .footer-cols a:has(.orb),
    .footer-cols a:has(.orb) .orb {
        transition: none;
    }
}

.footer-cols a:hover,
.footer-cols a[aria-current="page"] { color: #fff; }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
}

.footer-social a { color: rgba(255, 255, 255, 0.55); display: flex; }
.footer-social a:hover { color: #fff; }
.footer-bottom p { color: rgba(255, 255, 255, 0.45); font-size: 13px; }

.footer-lines {
    width: min(1080px, calc(100% - 56px));
    margin: 22px auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 9px;
}

.footer-lines span {
    display: block;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, transparent, rgba(214, 230, 222, 0.95), #fff, rgba(214, 230, 222, 0.95), transparent);
}

.footer-lines span:nth-child(1) { width: 100%; opacity: 0.65; }
.footer-lines span:nth-child(2) { width: 94%; opacity: 0.5; }
.footer-lines span:nth-child(3) { width: 82%; opacity: 0.28; }
.footer-lines span:nth-child(4) { width: 66%; opacity: 0.14; }

@keyframes rise {
    to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .sprint-rail.is-on .sprint-days span,
    .sprint-rail.is-on .phases span,
    .cadence.is-on .cadence-line i,
    .cadence.is-on .nodes b,
    .track i,
    .brief li,
    .brief.is-on li,
    .steps li,
    .steps.is-on li {
        animation: none;
        transition: none;
        opacity: 1;
        transform: none;
    }
    .sprint-rail.is-on .sprint-days span,
    .cadence.is-on .nodes b { background: #fff; color: #123c30; border-color: #fff; }
    .sprint-rail.is-on .phases span { color: #fff; }
}

@media (max-width: 980px) {
    .bar { flex-wrap: wrap; gap: 12px 16px; padding: 14px 16px; }
    .ways { order: 3; width: 100%; margin-left: 0; flex-wrap: wrap; }
    .wrap,
    .footer-card,
    .footer-lines { width: min(1080px, calc(100% - 32px)); }
    .hero, .split, .leave, .run, .plans, .pick, .terms, .strip, .footer-top, .footer-cols {
        grid-template-columns: 1fr;
    }
    .hero { padding-top: 40px; gap: 28px; }
    .stage { min-height: 0; order: -1; }
    .panel { min-height: 0; }
    .close { display: block; }
    .close .btn { margin-top: 22px; }
    .footer-card { padding: 28px 22px; }
    .site-footer { padding: 32px 0 40px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 16px; }
}

@media (max-width: 640px) {
    h1 { font-size: 40px; }
    .facts { grid-template-columns: 1fr; gap: 12px; }
    .sprint-days span { height: 28px; font-size: 0; }
    .steps li { grid-template-columns: 56px 1fr; }
}