/* =========================================================
   SKYCOATI - Construction & Infrastructure
   Built To Rise. / From Ground To Skyline.
   ========================================================= */

/* ---------- 01. Tokens ---------- */
:root {
    --charcoal: #151A1A;
    --deep-slate: #202827;
    --steel: #3C4948;

    --sky: #557C8A;
    --blue-gray: #7898A3;

    --sand: #D7C7AE;
    --stone: #E9E3D8;

    --copper: #B86F4B;
    --rust: #92553D;

    --off-white: #F7F5F0;
    --white: #FFFFFF;

    --text: #1D2524;
    --muted: #69716F;
    --line: rgba(21, 26, 26, 0.14);

    --line-light: rgba(233, 227, 216, 0.16);
    --muted-light: rgba(233, 227, 216, 0.62);

    --sans: "Manrope", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --serif: "DM Serif Display", Georgia, "Times New Roman", serif;

    --shell: 1320px;
    --gutter: clamp(20px, 5vw, 64px);
    --section-y: clamp(84px, 11vw, 168px);

    --ease: cubic-bezier(.22, .61, .36, 1);
    --ease-heavy: cubic-bezier(.65, .05, .18, 1);
    --dur: .6s;
}

/* ---------- 02. Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--off-white);
    color: var(--text);
    font-family: var(--sans);
    font-size: clamp(15.5px, 1.05vw, 17px);
    font-weight: 400;
    line-height: 1.62;
    letter-spacing: .002em;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

img, svg { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4 {
    margin: 0;
    font-weight: 700;
    letter-spacing: -.028em;
    line-height: 1.02;
    text-wrap: balance;
}

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: inherit; text-decoration: none; }

button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}

::selection { background: var(--copper); color: var(--white); }

:focus-visible {
    outline: 2px solid var(--copper);
    outline-offset: 3px;
    border-radius: 2px;
}

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

.skip-link {
    position: fixed;
    top: 10px; left: 10px;
    z-index: 200;
    padding: 12px 18px;
    background: var(--charcoal);
    color: var(--stone);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    transform: translateY(-160%);
    transition: transform .25s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 03. Layout primitives ---------- */
.shell {
    width: 100%;
    max-width: var(--shell);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.section {
    position: relative;
    padding-block: var(--section-y);
}

.section-head { max-width: 900px; margin-bottom: clamp(48px, 6vw, 88px); }

.section-head-split {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
    max-width: none;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 clamp(20px, 2.6vw, 34px);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--steel);
}
.eyebrow .sep { color: var(--copper); }
.eyebrow-light { color: var(--muted-light); }

.display {
    font-size: clamp(34px, 5.1vw, 74px);
    line-height: .98;
    letter-spacing: -.035em;
}

.section-lead {
    max-width: 58ch;
    margin-top: clamp(18px, 2.2vw, 28px);
    font-size: clamp(16px, 1.35vw, 20px);
    color: var(--muted);
    line-height: 1.55;
}

.muted-note { color: var(--muted); }

.disclaimer {
    max-width: 72ch;
    margin-top: 34px;
    padding-left: 16px;
    border-left: 1px solid var(--line);
    font-size: 13.2px;
    line-height: 1.65;
    color: var(--muted);
}

/* ---------- 04. Buttons ---------- */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 15px 26px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: transform .35s var(--ease), background-color .35s var(--ease),
                color .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }
.btn:hover .arrow-up { transform: translate(4px, -4px); }

.btn-lg { padding: 18px 32px; }

.btn-solid {
    background: var(--copper);
    color: var(--white);
    border-color: var(--copper);
}
.btn-solid:hover {
    background: var(--rust);
    border-color: var(--rust);
    transform: translateY(-3px);
    box-shadow: 0 14px 28px rgba(21, 26, 26, .22);
}

.btn-ghost {
    color: var(--stone);
    border-color: rgba(233, 227, 216, .38);
    backdrop-filter: blur(4px);
}
.btn-ghost:hover {
    background: rgba(233, 227, 216, .1);
    border-color: var(--stone);
    transform: translateY(-3px);
}

.btn-line {
    padding: 12px 0;
    color: var(--text);
    border-bottom: 1px solid var(--line);
}
.btn-line:hover { color: var(--copper); border-bottom-color: var(--copper); }

/* ---------- 05. Header ---------- */
.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    color: var(--stone);
    border-bottom: 1px solid transparent;
    transition: background-color .45s var(--ease), color .45s var(--ease),
                border-color .45s var(--ease), backdrop-filter .45s var(--ease);
}

.site-header[data-state="scrolled"] {
    background: rgba(21, 26, 26, .82);
    backdrop-filter: blur(14px) saturate(140%);
    border-bottom-color: var(--line-light);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: clamp(72px, 6.4vw, 92px);
}

/* Logo */
.logo {
    display: inline-flex;
    align-items: center;
    gap: 13px;
    color: inherit;
}
.logo-mark {
    display: grid;
    place-items: center;
    width: 44px; height: 44px;
    flex: none;
}
.logo-mark svg { overflow: visible; }
.mark-riser {
    transform-origin: bottom;
    animation: riser 7s var(--ease-heavy) infinite;
}
.mark-riser-b { animation-delay: -3.5s; }
@keyframes riser {
    0%, 100% { transform: scaleY(1); }
    50%      { transform: scaleY(1.05); }
}
.logo:hover .mark-accent { stroke: var(--sand); }
.mark-accent { transition: stroke .4s var(--ease); }

.logo-type { display: grid; gap: 2px; }
.logo-word {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .14em;
    line-height: 1;
}
.logo-sub {
    font-size: 8.6px;
    font-weight: 600;
    letter-spacing: .22em;
    text-transform: uppercase;
    line-height: 1;
    opacity: .62;
}

/* monochrome variant utility (signage, print, single-colour use) */
.logo--mono .mark-accent { stroke: currentColor; }
.logo--compact .logo-type { display: none; }

/* Nav */
.nav-list {
    display: flex;
    align-items: center;
    gap: clamp(18px, 2.4vw, 38px);
}
.nav-list a {
    position: relative;
    display: inline-block;
    padding: 6px 0;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: inherit;
    opacity: .82;
    transition: opacity .3s var(--ease);
}
.nav-list a::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 100%; height: 1px;
    background: var(--copper);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .45s var(--ease);
}
.nav-list a:hover { opacity: 1; }
.nav-list a:hover::after,
.nav-list a:focus-visible::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 14px; }
.nav-cta-mobile { display: none; }

.menu-btn {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 10px 4px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
}
.menu-bars { display: grid; gap: 5px; width: 22px; }
.menu-bars i {
    display: block;
    height: 1.5px;
    background: currentColor;
    transition: transform .4s var(--ease), opacity .3s var(--ease);
}
.menu-btn[aria-expanded="true"] .menu-bars i:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-bars i:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------- 06/07. Hero ---------- */
.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: min(100svh, 980px);
    padding-top: clamp(140px, 18vw, 220px);
    padding-bottom: clamp(28px, 4vw, 46px);
    overflow: hidden;
    background: var(--charcoal);
    color: var(--stone);
    isolation: isolate;
}

.hero-media { position: absolute; inset: 0; z-index: -2; background: var(--deep-slate); }
.hero-media img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: 50% 42%;
    filter: grayscale(.34) contrast(1.06) brightness(.82);
    animation: heroDrift 26s var(--ease) infinite alternate;
}
@keyframes heroDrift {
    from { transform: scale(1.02); }
    to   { transform: scale(1.1); }
}
.hero-scrim {
    position: absolute; inset: 0;
    background:
        linear-gradient(180deg, rgba(21,26,26,.86) 0%, rgba(21,26,26,.42) 38%, rgba(21,26,26,.9) 100%),
        linear-gradient(90deg, rgba(21,26,26,.78) 0%, rgba(21,26,26,.18) 62%);
}

.hero-diagram {
    position: absolute;
    right: 0;
    bottom: clamp(74px, 9vw, 118px);
    left: auto;
    z-index: -1;
    width: min(54%, 800px);
    height: min(66%, 600px);
    opacity: .75;
    mask-image: linear-gradient(100deg, transparent, #000 22%, #000 94%, transparent);
}
.diagram-svg { width: 100%; height: 100%; overflow: visible; }
.dg-hair path { stroke: rgba(233,227,216,.09); stroke-width: 1; fill: none; }
.dg-line path { stroke: rgba(233,227,216,.34); stroke-width: 1.1; fill: none; vector-effect: non-scaling-stroke; }
.dg-foundation { stroke: rgba(233,227,216,.6) !important; stroke-width: 1.6 !important; }
.dg-tick path { stroke: rgba(233,227,216,.4); stroke-width: 1; }
.dg-rise { stroke: var(--copper) !important; stroke-width: 1.4 !important; opacity: .85; }
.dg-riser {
    transform-origin: bottom;
    animation: dgRise 11s var(--ease-heavy) infinite alternate;
}
.dg-riser.r2 { animation-delay: -2.4s; }
.dg-riser.r3 { animation-delay: -4.8s; }
.dg-riser.r4 { animation-delay: -7.2s; }
@keyframes dgRise {
    from { transform: scaleY(.92); opacity: .5; }
    to   { transform: scaleY(1.04); opacity: 1; }
}
.dg-label text {
    fill: rgba(233,227,216,.66);
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .26em;
}

.hero-inner { position: relative; padding-bottom: clamp(40px, 6vw, 76px); }

.hero-title {
    font-size: clamp(48px, 7vw, 104px);
    line-height: .93;
    letter-spacing: -.04em;
    font-weight: 800;
    margin-bottom: clamp(22px, 2.8vw, 34px);
}
.hero-title .line { display: block; }
.hero-title .line:last-child { color: rgba(233, 227, 216, .74); }
.hero-title em {
    font-style: normal;
    color: var(--copper);
}

.hero-copy {
    max-width: 54ch;
    font-size: clamp(16px, 1.35vw, 19.5px);
    color: rgba(233, 227, 216, .78);
    line-height: 1.6;
    margin-bottom: clamp(30px, 3.6vw, 44px);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-foot {
    position: relative;
    display: flex;
    align-items: center;
    gap: clamp(10px, 1.6vw, 20px);
    padding-top: 22px;
    border-top: 1px solid rgba(233, 227, 216, .16);
}
.hero-foot-item {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: rgba(233, 227, 216, .5);
}
.hero-foot-item.is-active { color: var(--copper); }
.hero-rule {
    flex: 1;
    height: 1px;
    background: rgba(233, 227, 216, .2);
}

/* ---------- 08. Intro ---------- */
.intro { background: var(--off-white); padding-bottom: 0; }
.intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(32px, 5vw, 90px);
    align-items: start;
}
.intro-title { font-size: clamp(34px, 5.4vw, 78px); }
.intro-copy {
    font-size: clamp(16px, 1.3vw, 19px);
    color: var(--steel);
    line-height: 1.62;
}
.intro-copy .muted-note {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--copper);
}
.intro-drawing {
    margin-top: clamp(48px, 7vw, 96px);
    height: clamp(120px, 16vw, 220px);
}
.drawing-svg { width: 100%; height: 100%; }
.dw-line path {
    fill: none;
    stroke: rgba(21, 26, 26, .22);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}
.dw-line .accent { stroke: var(--copper); stroke-width: 1.4; }

/* rising-line draw-in - paths carry pathLength="1" so every line draws at one rate */
.draw {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    transition: stroke-dashoffset 2.4s var(--ease-heavy);
}
.is-visible .draw, .draw.is-visible { stroke-dashoffset: 0; }

/* ---------- 09. Capabilities ---------- */
.capabilities { background: var(--white); border-top: 1px solid var(--line); }
.cap-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}
.cap-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: clamp(28px, 3vw, 44px);
    background: var(--white);
    transition: background-color .5s var(--ease), transform .5s var(--ease);
}
.cap-card:hover { background: var(--off-white); }
.cap-index {
    position: absolute;
    top: clamp(22px, 2.4vw, 32px);
    right: clamp(22px, 2.4vw, 32px);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .16em;
    color: var(--muted);
    transition: color .4s var(--ease), transform .5s var(--ease);
}
.cap-card:hover .cap-index { color: var(--copper); transform: translateY(-3px); }
.cap-icon { color: var(--steel); margin-bottom: clamp(28px, 4vw, 52px); transition: color .4s var(--ease); }
.cap-card:hover .cap-icon { color: var(--sky); }
.cap-card h3 {
    font-size: clamp(19px, 1.55vw, 23px);
    letter-spacing: -.018em;
    margin-bottom: 12px;
}
.cap-lead {
    margin-bottom: 10px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--copper);
}
.cap-card p:last-of-type { color: var(--muted); font-size: 15px; }
.cap-rule {
    display: block;
    height: 1px;
    width: 34px;
    margin-top: 26px;
    background: var(--copper);
    transition: width .6s var(--ease-heavy);
}
.cap-card:hover .cap-rule { width: 72px; }

/* ---------- 10. Projects ---------- */
.projects { background: var(--off-white); }
.proj-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: clamp(20px, 2.6vw, 40px);
    margin-top: clamp(40px, 5vw, 68px);
}
.proj-card-a { grid-column: span 12; }
.proj-card-b { grid-column: span 7; }
.proj-card-c { grid-column: span 5; }

.proj-link { display: block; }
.proj-media {
    position: relative;
    display: block;
    overflow: hidden;
    background: var(--steel);
}
.proj-media::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(21,26,26,0) 45%, rgba(21,26,26,.55));
    opacity: 0;
    transition: opacity .6s var(--ease);
}
.proj-card:hover .proj-media::after { opacity: 1; }
.proj-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(.2) contrast(1.03);
    transition: transform 1.4s var(--ease-heavy), filter .8s var(--ease);
}
.proj-card:hover .proj-media img { transform: scale(1.06); filter: grayscale(0) contrast(1.05); }

.proj-card-a .proj-media { aspect-ratio: 21 / 9; }
.proj-card-b .proj-media { aspect-ratio: 4 / 3; }
.proj-card-c .proj-media { aspect-ratio: 4 / 3; }

.proj-body {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
        "num name cta"
        "num type cta"
        "num scope cta";
    align-items: center;
    gap: 2px 22px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    margin-top: 20px;
}
.proj-num {
    grid-area: num;
    align-self: start;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .16em;
    color: var(--copper);
    transition: transform .5s var(--ease-heavy);
}
.proj-card:hover .proj-num { transform: translateY(-6px); }
.proj-name {
    grid-area: name;
    font-size: clamp(24px, 2.6vw, 38px);
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.08;
}
.proj-type { grid-area: type; color: var(--muted); font-size: 14.5px; }
.proj-scope {
    grid-area: scope;
    margin-top: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--steel);
}
.proj-cta {
    grid-area: cta;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    align-self: end;
    padding-bottom: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--text);
    border-bottom: 1px solid var(--line);
    transition: color .4s var(--ease), border-color .4s var(--ease);
}
.proj-card:hover .proj-cta { color: var(--copper); border-bottom-color: var(--copper); }
.proj-card:hover .proj-cta .arrow { transform: translateX(5px); }
.proj-cta .arrow { transition: transform .4s var(--ease); }

/* ---------- 11. Blueprint ---------- */
.blueprint {
    background: var(--charcoal);
    color: var(--stone);
}
.blueprint .display { color: var(--stone); }
.blueprint .section-lead { color: var(--muted-light); }

.bp-canvas {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .95fr);
    gap: clamp(24px, 3vw, 48px);
    align-items: center;
    padding: clamp(18px, 2.4vw, 34px);
    border: 1px solid var(--line-light);
    background:
        radial-gradient(120% 90% at 20% 0%, rgba(85, 124, 138, .16), transparent 62%),
        var(--deep-slate);
}
.bp-svg { width: 100%; height: auto; }

.bp-dim path { stroke: rgba(233,227,216,.3); stroke-width: 1; fill: none; }
.bp-dim text {
    fill: rgba(233,227,216,.5);
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .16em;
}
.bp-level, .bp-col {
    fill: none;
    stroke: rgba(233,227,216,.58);
    stroke-width: 1.5;
    transition: stroke .35s var(--ease), stroke-width .35s var(--ease);
}
.bp-base { fill: none; stroke: rgba(233,227,216,.85); stroke-width: 2.6; transition: stroke .35s var(--ease); }
.bp-base.thin { stroke-width: 1; opacity: .5; }
.bp-tag {
    fill: rgba(233,227,216,.72);
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .16em;
    transition: fill .35s var(--ease);
}
.bp-part .hit { fill: transparent; cursor: pointer; }
.bp-part { outline: none; }
.bp-part:hover .bp-level,
.bp-part:hover .bp-col,
.bp-part.is-active .bp-level,
.bp-part.is-active .bp-col,
.bp-part:focus-visible .bp-level,
.bp-part:focus-visible .bp-col {
    stroke: var(--copper);
    stroke-width: 2.6;
}
.bp-part:hover .bp-base,
.bp-part.is-active .bp-base,
.bp-part:focus-visible .bp-base { stroke: var(--copper); }
.bp-part:hover .bp-tag,
.bp-part.is-active .bp-tag,
.bp-part:focus-visible .bp-tag { fill: var(--sand); }
.bp-part:focus-visible .hit { fill: rgba(184, 111, 75, .1); }

.bp-rise {
    stroke: var(--sky);
    stroke-width: 1.4;
    opacity: .85;
}

.bp-readout {
    display: grid;
    gap: 12px;
    align-content: center;
    padding: clamp(24px, 3vw, 40px);
    border-left: 1px solid var(--line-light);
    min-height: 220px;
}
.bp-readout-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--copper);
}
.bp-readout-title {
    font-size: clamp(22px, 2.2vw, 32px);
    font-weight: 700;
    letter-spacing: -.02em;
    line-height: 1.1;
}
.bp-readout-copy { color: var(--muted-light); font-size: 15px; line-height: 1.6; max-width: 34ch; }

.bp-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 28px;
    margin-top: 22px;
}
.bp-legend li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--muted-light);
}
.bp-legend li::before {
    content: "";
    width: 16px; height: 1px;
    background: var(--copper);
}

/* ---------- 12. Method ---------- */
.method { background: var(--white); border-top: 1px solid var(--line); }
.method-track {
    position: relative;
    padding-bottom: clamp(72px, 9vw, 130px);
}
.method-line {
    position: absolute;
    inset: auto 0 0;
    width: 100%;
    height: clamp(72px, 9vw, 130px);
    pointer-events: none;
}
.method-line path { stroke: var(--copper); stroke-width: 1.2; vector-effect: non-scaling-stroke; }

.method-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(20px, 2.4vw, 40px);
    align-items: start;
}
.method-step {
    position: relative;
    padding-top: clamp(20px, 2.2vw, 30px);
    border-top: 1px solid var(--line);
}
/* Each stage sits a step higher than the last - the frame rising left to right. */
.method-step:nth-child(1) { margin-top: clamp(42px, 6vw, 96px); }
.method-step:nth-child(2) { margin-top: clamp(28px, 4vw, 64px); }
.method-step:nth-child(3) { margin-top: clamp(14px, 2vw, 32px); }
.method-step:nth-child(4) { margin-top: 0; }
.step-num {
    display: block;
    margin-bottom: 18px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--copper);
}
.method-step h3 {
    font-size: clamp(24px, 2.6vw, 38px);
    letter-spacing: -.03em;
    margin-bottom: 12px;
}
.method-step p { color: var(--muted); font-size: 15px; max-width: 26ch; }

/* ---------- 13. Why ---------- */
.why {
    position: relative;
    background: var(--charcoal);
    color: var(--stone);
    overflow: hidden;
}
.why-lines {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    pointer-events: none;
}
.why-lines i {
    display: block;
    border-left: 1px solid rgba(233, 227, 216, .07);
    transform-origin: bottom;
    animation: whyLine 14s var(--ease-heavy) infinite alternate;
}
.why-lines i:nth-child(2) { animation-delay: -2s; }
.why-lines i:nth-child(3) { animation-delay: -4s; }
.why-lines i:nth-child(4) { animation-delay: -6s; }
.why-lines i:nth-child(5) { animation-delay: -8s; }
.why-lines i:nth-child(6) { animation-delay: -10s; }
@keyframes whyLine {
    from { transform: scaleY(.82); opacity: .5; }
    to   { transform: scaleY(1); opacity: 1; }
}
.why .shell { position: relative; }
.why .display { color: var(--stone); }

.why-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    margin: 0;
}
.why-item {
    padding: clamp(30px, 4vw, 56px) 0;
    border-top: 1px solid var(--line-light);
}
.why-item:nth-child(even) { padding-left: clamp(24px, 4vw, 64px); border-left: 1px solid var(--line-light); }
.why-item dt {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .26em;
    text-transform: uppercase;
    color: var(--copper);
    margin-bottom: 18px;
}
.why-item dd {
    margin: 0;
    font-size: clamp(24px, 3.2vw, 46px);
    font-weight: 700;
    letter-spacing: -.032em;
    line-height: 1.06;
    max-width: 18ch;
}

/* ---------- 14. Materials ---------- */
.materials { background: var(--stone); }
.mat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    background: rgba(21, 26, 26, .12);
    border: 1px solid rgba(21, 26, 26, .12);
}
.mat-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: clamp(260px, 30vw, 400px);
    padding: clamp(24px, 2.6vw, 38px);
    overflow: hidden;
    transition: color .5s var(--ease);
}
.mat-concrete { background: #CFC9BE; color: var(--charcoal); }
.mat-steel    { background: var(--steel); color: var(--stone); }
.mat-glass    { background: var(--blue-gray); color: var(--charcoal); }
.mat-stone    { background: var(--sand); color: var(--charcoal); }
.mat-panel::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        repeating-linear-gradient(135deg, rgba(255,255,255,.09) 0 2px, transparent 2px 7px);
    opacity: .5;
    transition: opacity .6s var(--ease);
}
.mat-steel::before { background-image: repeating-linear-gradient(90deg, rgba(233,227,216,.1) 0 1px, transparent 1px 12px); }
.mat-glass::before { background-image: linear-gradient(160deg, rgba(255,255,255,.35), transparent 55%); }
.mat-stone::before { background-image: repeating-linear-gradient(0deg, rgba(21,26,26,.06) 0 1px, transparent 1px 14px); }
.mat-panel:hover::before { opacity: .85; }
.mat-panel > * { position: relative; }
.mat-num {
    position: absolute;
    top: clamp(22px, 2.4vw, 34px);
    left: clamp(24px, 2.6vw, 38px);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .2em;
    opacity: .7;
}
.mat-graphic {
    display: block;
    margin-bottom: 26px;
    opacity: .6;
    transition: transform .8s var(--ease-heavy), opacity .5s var(--ease);
}
.mat-panel:hover .mat-graphic { transform: translateY(-6px); opacity: .95; }
.mat-panel h3 {
    font-size: clamp(22px, 2.2vw, 32px);
    letter-spacing: -.02em;
    margin-bottom: 6px;
}
.mat-panel p {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .24em;
    text-transform: uppercase;
    opacity: .72;
}

/* ---------- 15. Look closer ---------- */
.closer { background: var(--off-white); }
.closer-stage {
    position: relative;
    overflow: hidden;
    background: var(--steel);
    aspect-ratio: 16 / 9;
}
.closer-img {
    width: 100%; height: 100%;
    object-fit: cover;
    filter: grayscale(.25) contrast(1.05) brightness(.94);
}
.hotspot { position: absolute; left: var(--x); top: var(--y); }
.hotspot-dot {
    position: relative;
    display: grid;
    place-items: center;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(21, 26, 26, .72);
    color: var(--stone);
    border: 1px solid rgba(233, 227, 216, .4);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .1em;
    backdrop-filter: blur(6px);
    transform: translate(-50%, -50%);
    transition: background-color .4s var(--ease), border-color .4s var(--ease), transform .4s var(--ease);
}
.hotspot-dot::after {
    content: "";
    position: absolute; inset: -1px;
    border-radius: 50%;
    border: 1px solid rgba(184, 111, 75, .7);
    animation: pulse 3.4s var(--ease) infinite;
}
@keyframes pulse {
    0%   { transform: scale(1); opacity: .75; }
    70%  { transform: scale(1.55); opacity: 0; }
    100% { transform: scale(1.55); opacity: 0; }
}
.hotspot-dot:hover,
.hotspot-dot[aria-expanded="true"] {
    background: var(--copper);
    border-color: var(--copper);
    transform: translate(-50%, -50%) scale(1.06);
}

.hotspot-card {
    position: absolute;
    left: 32px;
    top: -8px;
    width: min(260px, 62vw);
    padding: 20px 22px;
    background: rgba(247, 245, 240, .96);
    border-left: 2px solid var(--copper);
    color: var(--text);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity .4s var(--ease), transform .4s var(--ease), visibility .4s;
    pointer-events: none;
}
.hotspot-card-left { left: auto; right: 32px; }
.hotspot:hover .hotspot-card,
.hotspot:focus-within .hotspot-card,
.hotspot-card.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.hs-label {
    display: block;
    margin-bottom: 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--copper);
}
.hotspot-card p { font-size: 14.5px; color: var(--steel); line-height: 1.55; }

/* ---------- 16. Quality ---------- */
.quality { background: var(--stone); }
.pillars {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(22px, 2.6vw, 44px);
}
.pillar { padding-top: 26px; border-top: 1px solid rgba(21, 26, 26, .18); }
.pillar-rule {
    display: block;
    width: 26px; height: 2px;
    margin-bottom: 22px;
    background: var(--copper);
    transition: width .7s var(--ease-heavy);
}
.pillar:hover .pillar-rule { width: 60px; }
.pillar h3 {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--steel);
    margin-bottom: 14px;
}
.pillar p {
    font-size: clamp(17px, 1.5vw, 21px);
    line-height: 1.35;
    letter-spacing: -.014em;
}

/* ---------- 17. About ---------- */
.about { background: var(--off-white); padding-block: 0; }
.about-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
}
.about-media { position: relative; min-height: clamp(360px, 52vw, 720px); background: var(--steel); }
.about-media img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    filter: grayscale(.25) contrast(1.04);
}
.about-body {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(56px, 8vw, 128px) clamp(24px, 6vw, 110px);
}
.about-body .display { margin-bottom: clamp(24px, 3vw, 36px); }
.about-body p {
    max-width: 46ch;
    color: var(--steel);
    font-size: clamp(15.5px, 1.2vw, 18px);
}
.about-body .btn-line { margin-top: 18px; }

/* ---------- 19. Insights ---------- */
.insights { background: var(--off-white); }
.ins-item { border-top: 1px solid var(--line); }
.ins-item:last-child { border-bottom: 1px solid var(--line); }
.ins-item a {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: clamp(20px, 4vw, 56px);
    padding: clamp(26px, 3.4vw, 48px) 0;
    transition: padding-inline .55s var(--ease), color .4s var(--ease);
}
.ins-item a:hover { padding-inline: clamp(10px, 1.6vw, 26px); color: var(--copper); }
.ins-num {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--copper);
}
.ins-title {
    display: block;
    font-size: clamp(24px, 3.2vw, 46px);
    font-weight: 700;
    letter-spacing: -.032em;
    line-height: 1.05;
}
.ins-copy {
    display: block;
    margin-top: 10px;
    max-width: 52ch;
    color: var(--muted);
    font-size: 15px;
}
.ins-item a:hover .ins-copy { color: var(--steel); }
.ins-item .arrow { font-size: 22px; transition: transform .5s var(--ease); }
.ins-item a:hover .arrow { transform: translateX(8px); }

/* ---------- 20. Final CTA ---------- */
.cta {
    position: relative;
    padding-bottom: clamp(160px, 20vw, 300px);
    background: var(--charcoal);
    color: var(--stone);
    overflow: hidden;
    text-align: center;
}
.cta-skyline {
    position: absolute;
    inset: auto 0 0;
    height: clamp(120px, 19vw, 260px);
    pointer-events: none;
    mask-image: linear-gradient(180deg, transparent, #000 38%);
}
.cta-skyline svg { width: 100%; height: 100%; }
.sky-line path {
    fill: none;
    stroke: rgba(233, 227, 216, .22);
    stroke-width: 1.1;
    vector-effect: non-scaling-stroke;
}
.sky-hair { stroke: rgba(233, 227, 216, .08) !important; }
.sky-b {
    transform-origin: bottom;
    transform: translateY(34px) scaleY(.6);
    opacity: 0;
    transition: transform 1.8s var(--ease-heavy), opacity 1.2s var(--ease);
    transition-delay: var(--d, 0s);
}
.cta.is-visible .sky-b { transform: translateY(0) scaleY(1); opacity: 1; }

.cta-inner { position: relative; display: grid; justify-items: center; }
.cta-title { font-size: clamp(38px, 6.4vw, 92px); }
.cta-copy {
    max-width: 46ch;
    margin: clamp(22px, 2.8vw, 32px) 0 clamp(30px, 3.6vw, 44px);
    color: var(--muted-light);
    font-size: clamp(16px, 1.35vw, 19px);
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cta-sig {
    margin-top: clamp(64px, 8vw, 116px);
    font-family: var(--serif);
    font-size: clamp(24px, 3.2vw, 44px);
    letter-spacing: -.01em;
    color: rgba(233, 227, 216, .38);
}

/* ---------- 21. Footer ---------- */
.site-footer {
    background: var(--deep-slate);
    color: var(--stone);
    padding-block: clamp(56px, 7vw, 100px) 34px;
    border-top: 1px solid var(--line-light);
}
.foot-top {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.6fr);
    gap: clamp(40px, 6vw, 90px);
    padding-bottom: clamp(44px, 6vw, 78px);
}
.foot-word {
    display: block;
    font-size: clamp(38px, 5.4vw, 68px);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1;
    text-transform: uppercase;
}
.foot-sub {
    display: block;
    margin-top: 12px;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .28em;
    text-transform: uppercase;
    color: var(--muted-light);
}
.foot-statement {
    margin-top: 26px;
    font-family: var(--serif);
    font-size: clamp(20px, 2.2vw, 28px);
    color: var(--sand);
}
.foot-rule {
    display: block;
    width: 100%;
    max-width: 240px;
    height: 1px;
    margin-top: 28px;
    background: linear-gradient(90deg, var(--copper), transparent);
}

.foot-nav {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(22px, 3vw, 40px);
}
.foot-col h2 {
    margin-bottom: 20px;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--copper);
}
.foot-col li + li { margin-top: 11px; }
.foot-col a {
    position: relative;
    font-size: 14.5px;
    color: var(--muted-light);
    transition: color .3s var(--ease);
}
.foot-col a:hover { color: var(--stone); }

.foot-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 26px;
    justify-content: space-between;
    padding-top: 26px;
    border-top: 1px solid var(--line-light);
    font-size: 13px;
    color: var(--muted-light);
}
.foot-bottom p { margin: 0; }
.foot-legal a { transition: color .3s var(--ease); }
.foot-legal a:hover { color: var(--copper); }

/* ---------- 22. Reveal system (the rising line) ---------- */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .9s var(--ease), transform .9s var(--ease-heavy);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 24. Responsive ---------- */
@media (max-width: 1100px) {
    .cap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .bp-canvas { grid-template-columns: minmax(0, 1fr); }
    .bp-readout { border-left: 0; border-top: 1px solid var(--line-light); min-height: 0; }
    .method-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .method-line { display: none; }
    .method-track { padding-bottom: 0; }
    .method-step { margin-top: 0 !important; padding-bottom: clamp(24px, 4vw, 40px); }
    .mat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .foot-top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 980px) {
    .nav-cta { display: none; }
    .menu-btn { display: inline-flex; }
    .nav-cta-mobile { display: inline-flex; }

    .nav {
        position: fixed;
        inset: 0;
        z-index: -1;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 34px;
        padding: 96px var(--gutter) 48px;
        background: var(--charcoal);
        color: var(--stone);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        transition: opacity .45s var(--ease), transform .55s var(--ease-heavy), visibility .45s;
    }
    .nav.is-open { opacity: 1; visibility: visible; transform: none; }
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        width: 100%;
    }
    .nav-list li { width: 100%; border-bottom: 1px solid var(--line-light); }
    .nav-list a {
        display: block;
        width: 100%;
        padding: 18px 0;
        font-size: 22px;
        letter-spacing: .02em;
        text-transform: none;
        font-weight: 700;
    }
    .site-header.nav-open { color: var(--stone); }

    .proj-card-b, .proj-card-c { grid-column: span 12; }
    .proj-card-a .proj-media { aspect-ratio: 16 / 10; }
    .proj-card-b .proj-media, .proj-card-c .proj-media { aspect-ratio: 16 / 10; }

    .intro-grid { grid-template-columns: minmax(0, 1fr); }
    .why-list { grid-template-columns: minmax(0, 1fr); }
    .why-item:nth-child(even) { padding-left: 0; border-left: 0; }
    .about-split { grid-template-columns: minmax(0, 1fr); }
    .about-media { min-height: clamp(280px, 60vw, 460px); }
}

@media (max-width: 720px) {
    .hero { min-height: auto; padding-top: clamp(128px, 34vw, 180px); }
    .hero-diagram { opacity: .34; width: 100%; height: 52%; bottom: 68px; }
    .dg-label text { font-size: 26px; letter-spacing: .16em; }

    /* Simplified blueprint: drop fine dimensions, thicken lines for small screens */
    .bp-dim { display: none; }
    .bp-tag { font-size: 26px; }
    .bp-level, .bp-col { stroke-width: 2.6; }
    .bp-base { stroke-width: 4; }
    .bp-rise { stroke-width: 2.6; }
    .hero-foot { flex-wrap: wrap; gap: 10px 14px; }
    .hero-rule { min-width: 24px; }
    .hero-actions .btn { flex: 1 1 100%; justify-content: center; }

    .cap-grid { grid-template-columns: minmax(0, 1fr); }
    .mat-grid { grid-template-columns: minmax(0, 1fr); }
    .mat-panel { min-height: 240px; }
    .pillars { grid-template-columns: minmax(0, 1fr); }
    .method-list { grid-template-columns: minmax(0, 1fr); }
    .foot-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .proj-body {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "num name"
            "num type"
            "num scope"
            "cta cta";
        gap: 4px 16px;
    }
    .proj-cta { margin-top: 18px; align-self: start; }

    .closer-stage { aspect-ratio: 4 / 5; }
    .hotspot-card { left: 50%; right: auto; top: 34px; transform: translate(-50%, 8px); width: min(240px, 72vw); }
    .hotspot-card-left { left: 50%; right: auto; }
    .hotspot:hover .hotspot-card,
    .hotspot:focus-within .hotspot-card,
    .hotspot-card.is-open { transform: translate(-50%, 0); }

    .ins-item a { grid-template-columns: auto 1fr; gap: 14px 18px; }
    .ins-item .arrow { grid-column: 2; }
    .cta-actions .btn { flex: 1 1 100%; justify-content: center; }
    .bp-legend { gap: 8px 18px; }
}

@media (max-width: 420px) {
    .logo-word { font-size: 17px; }
    .logo-sub { font-size: 7.6px; letter-spacing: .18em; }
    .logo-mark { width: 38px; height: 38px; }
    .menu-label { display: none; }
}

/* ---------- 25. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1; transform: none; }
    .draw { stroke-dashoffset: 0; }
    .sky-b { opacity: 1; transform: none; }
}

/* ---------- Print ---------- */
@media print {
    .site-header, .hero-diagram, .cta-skyline, .why-lines { display: none !important; }
    body { background: #fff; color: #000; }
}