:root {
    --ink: #11110f;
    --paper: #ffffff;
    --wash: #f4f4f0;
    --wash-deep: #e9e9e3;
    --line: #c8c8bf;
    --muted: #67675f;
    --soft-ink: #30302c;
    --header-height: 72px;
    --page-max: 1540px;
    /* DeepSeek-inspired typography: YaHei for CJK, a clean UI sans for Latin. */
    --ui-font: "Microsoft YaHei UI", "Microsoft YaHei", "微软雅黑", sans-serif;
    --latin-font: "Segoe UI Variable", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    --legacy-title-font: "Config", "SimSun", "宋体", "STSong", serif;
    --legacy-label-font: "Config", "Consolas", "Courier New", monospace;
    --type-xs: 12px;
    --type-sm: 13px;
    --type-base: 14px;
    --type-lg: 16px;
    --type-xl: 20px;
    --type-title: 28px;
    --line-xs: 18px;
    --line-sm: 23px;
    --line-base: 25px;
    --line-lg: 28px;
    --ease-out: cubic-bezier(.22, 1, .36, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
    min-width: 320px;
    margin: 0;
    overflow-x: hidden;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--ui-font);
    font-size: var(--type-base);
    line-height: var(--line-base);
    -webkit-font-smoothing: antialiased;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
}

body.menu-open {
    overflow: hidden;
}

body.intro-active {
    overflow: hidden;
}

.site-intro {
    position: fixed;
    z-index: 1000;
    inset: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 32px;
    background: #000;
    color: #fff;
    cursor: pointer;
    outline: 0;
}

.site-intro.is-leaving {
    pointer-events: none;
    animation: siteIntroExit .62s var(--ease-out) forwards;
}

.site-intro-stage {
    width: min(72vw, 330px);
    display: grid;
    gap: 4px;
}

.site-intro-symbols {
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 11px;
}

.site-intro-symbols::before,
.site-intro-symbols::after {
    content: "";
    position: absolute;
    z-index: 2;
    pointer-events: none;
}

.site-intro-symbols::before {
    top: -12px;
    bottom: -12px;
    left: 0;
    width: 1px;
    background: rgba(255, 255, 255, .65);
    opacity: 0;
    animation: introGridScan 2.6s .45s ease-in-out forwards;
}

.site-intro-symbols::after {
    inset: -14px;
    border: 1px solid rgba(255, 255, 255, .22);
    opacity: 0;
    transform: scale(.96);
    animation: introGridFrame 2.7s .2s var(--ease-out) forwards;
}

.intro-symbol {
    position: relative;
    aspect-ratio: 1;
    display: block;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .65);
    background: #050505;
    color: #fff;
    opacity: 0;
    transform: translate(var(--x), var(--y)) rotate(var(--r)) scale(.12);
    transform-origin: center;
    animation: introSymbolAssemble 2.45s var(--ease-out) forwards;
    animation-delay: calc(var(--i) * 60ms);
}

.intro-symbol::before,
.intro-symbol::after {
    content: "";
    position: absolute;
    background: currentColor;
    opacity: .16;
}

.intro-symbol::before {
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
}

.intro-symbol::after {
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
}

.intro-symbol svg {
    position: absolute;
    inset: 15%;
    width: 70%;
    height: 70%;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.1;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
    animation: introGlyphPulse 1.45s calc(.8s + var(--i) * 55ms) ease-in-out both;
}

.intro-symbol b {
    position: absolute;
    right: 6px;
    bottom: 5px;
    font-family: var(--legacy-label-font);
    font-size: 9px;
    font-weight: 400;
    line-height: 1;
    letter-spacing: .04em;
}

.site-intro-caption {
    display: grid;
    justify-items: center;
    gap: 5px;
    text-align: center;
    opacity: 0;
    transform: translateY(42vh);
    animation: siteIntroCaption 3s var(--ease-out) forwards;
}

.site-intro-caption strong {
    font-family: var(--legacy-title-font);
    font-size: clamp(17px, 1.7vw, 25px);
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: .07em;
}

.site-intro-caption small {
    font-family: var(--legacy-label-font);
    font-size: clamp(8px, .65vw, 10px);
    line-height: 1.5;
    letter-spacing: .13em;
}

.site-intro-enter {
    justify-self: center;
    margin-top: 8px;
    color: rgba(255, 255, 255, .72);
    font-family: var(--ui-font);
    font-size: 11px;
    line-height: 1.4;
    letter-spacing: .16em;
    opacity: 0;
    transform: translateY(8px);
    animation: siteIntroEnterHint 1.25s 3.08s var(--ease-out) forwards, siteIntroEnterPulse 2.8s 4.5s ease-in-out infinite;
}

button,
a,
input,
summary {
    color: inherit;
    font: inherit;
}

button,
a,
summary {
    -webkit-tap-highlight-color: transparent;
}

a {
    text-decoration: none;
}

button {
    border: 0;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 1px solid currentColor;
    outline-offset: 4px;
}

svg {
    display: block;
}

code {
    font-family: var(--latin-font);
}

.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-link {
    position: fixed;
    z-index: 200;
    top: 10px;
    left: 10px;
    padding: 10px 14px;
    transform: translateY(-180%);
    border: 1px solid var(--ink);
    background: var(--paper);
    font-size: var(--type-sm);
    transition: transform .2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-grid {
    position: fixed;
    z-index: -1;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(17, 17, 15, .032) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(17, 17, 15, .025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .78), transparent 90vh);
}

.site-header {
    position: sticky;
    z-index: 100;
    top: 0;
    height: var(--header-height);
    display: grid;
    grid-template-columns: minmax(360px, 1fr) auto;
    align-items: stretch;
    border-bottom: 1px solid var(--ink);
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(14px);
    transition: box-shadow .2s ease, background .2s ease;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, .98);
    box-shadow: 0 7px 25px rgba(17, 17, 15, .06);
}

.brand {
    min-width: 0;
    display: flex;
    align-items: stretch;
}

.brand-mark {
    width: 88px;
    flex: 0 0 88px;
    display: grid;
    place-items: center;
    border-right: 1px solid var(--ink);
}

.brand-mark svg {
    width: 43px;
    height: 43px;
    overflow: visible;
}

.brand-mark path,
.brand-mark circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1.35;
    vector-effect: non-scaling-stroke;
}

.brand-network {
    stroke-dasharray: 160;
    stroke-dashoffset: 160;
    animation: lineDraw 1.4s var(--ease-out) forwards;
}

.brand-mark circle {
    transform-box: fill-box;
    transform-origin: center;
    opacity: 0;
    animation: nodeIn .45s ease forwards;
}

.brand-mark circle:nth-of-type(1) { animation-delay: .15s; }
.brand-mark circle:nth-of-type(2) { animation-delay: .25s; }
.brand-mark circle:nth-of-type(3) { animation-delay: .35s; }
.brand-mark circle:nth-of-type(4) { animation-delay: .45s; }
.brand-mark circle:nth-of-type(5) { animation-delay: .55s; }

.brand-copy {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 0 28px;
}

.brand-copy strong {
    overflow: hidden;
    font-family: var(--legacy-title-font);
    font-size: 18px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: .12em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.brand-copy small {
    position: relative;
    color: var(--muted);
    font-family: var(--legacy-label-font);
    font-size: 9px;
    line-height: 1;
    letter-spacing: .16em;
    white-space: nowrap;
}

.brand-copy small::before {
    content: "";
    position: absolute;
    top: 50%;
    right: calc(100% + 10px);
    width: 1px;
    height: 17px;
    background: var(--line);
    transform: translateY(-50%);
}

.site-nav {
    display: flex;
    align-items: stretch;
    border-left: 1px solid var(--line);
}

.nav-feature-menu {
    position: relative;
    display: flex;
}

.nav-feature-toggle {
    min-width: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0 18px;
    border-right: 1px solid var(--line);
    background: transparent;
    color: var(--ink);
    font-family: inherit;
    font-size: var(--type-base);
    cursor: pointer;
}

.nav-feature-toggle svg {
    width: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.4;
    transition: transform .2s ease;
}

.nav-feature-toggle[aria-expanded="true"] {
    background: var(--wash);
}

.nav-feature-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.nav-feature-links {
    position: absolute;
    z-index: 110;
    top: calc(100% + 1px);
    right: 0;
    width: min(620px, calc(100vw - 24px));
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border: 1px solid var(--ink);
    border-top: 0;
    background: var(--paper);
    box-shadow: 12px 12px 0 rgba(17, 17, 15, .07);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .18s ease, transform .18s ease, visibility .18s;
}

.nav-feature-links.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.site-nav .nav-feature-links a {
    min-height: 88px;
    display: grid;
    grid-template-columns: 28px 1fr;
    grid-template-rows: 1fr 1fr;
    place-items: initial;
    align-content: center;
    column-gap: 13px;
    padding: 17px 20px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.site-nav .nav-feature-links a:nth-child(2n) { border-right: 0; }
.site-nav .nav-feature-links a:nth-last-child(-n+2) { border-bottom: 0; }

.nav-feature-links a > span {
    grid-row: 1 / -1;
    align-self: center;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 11px;
}

.nav-feature-links a > strong {
    align-self: end;
    font-size: 14px;
    font-weight: 500;
}

.nav-feature-links a > small {
    align-self: start;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 9px;
    letter-spacing: .08em;
}

.site-nav .nav-feature-links a::after {
    right: 20px;
    bottom: 12px;
    left: 61px;
}

.site-nav > .nav-download {
    min-width: 92px;
}

.site-nav a {
    position: relative;
    min-width: 70px;
    display: grid;
    place-items: center;
    padding: 0 15px;
    border-right: 1px solid var(--line);
    font-size: var(--type-base);
    letter-spacing: .025em;
    transition: background .18s ease, color .18s ease;
}

.site-nav a::after {
    content: "";
    position: absolute;
    right: 10px;
    bottom: 9px;
    left: 10px;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .22s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
    background: var(--wash);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
    transform: scaleX(1);
}

.release-chip {
    min-width: 152px;
    display: grid;
    grid-template-columns: 10px auto auto;
    align-items: center;
    gap: 9px;
    padding: 0 20px;
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    letter-spacing: .07em;
}

.release-chip strong {
    font-size: var(--type-base);
    font-weight: 400;
}

.status-square {
    width: 8px;
    height: 8px;
    border: 1px solid var(--ink);
    animation: statusBlink 2.2s ease-in-out infinite;
}

.menu-toggle {
    display: none;
}

.section-shell {
    position: relative;
    width: min(100%, var(--page-max));
    margin: 0 auto;
    padding-right: clamp(28px, 4vw, 72px);
    padding-left: clamp(100px, 9vw, 150px);
}

.section-coordinate {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 74px;
    display: grid;
    grid-template-rows: auto 1fr auto;
    justify-items: center;
    padding: 42px 0 36px;
    border-right: 1px solid var(--line);
    color: var(--muted);
    font-family: var(--latin-font);
}

.section-coordinate > span {
    width: 31px;
    height: 31px;
    display: grid;
    place-items: center;
    border: 1px solid currentColor;
    font-size: 11px;
}

.section-coordinate > .coordinate-badge {
    position: relative;
    width: 52px;
    height: 52px;
    display: block;
    overflow: hidden;
    border: 0;
    background: var(--ink);
    color: var(--paper);
    isolation: isolate;
    box-shadow: inset 0 0 0 1px var(--ink);
    animation: coordinateTileBreath 5.4s ease-in-out infinite;
}

.coordinate-badge::before,
.coordinate-badge::after {
    content: "";
    position: absolute;
    z-index: -1;
    background: currentColor;
    opacity: .18;
}

.coordinate-badge::before {
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
    animation: coordinateScanX 4.8s ease-in-out infinite;
}

.coordinate-badge::after {
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
    animation: coordinateScanY 4.8s ease-in-out infinite;
}

.coordinate-badge svg {
    position: absolute;
    top: 6px;
    left: 6px;
    width: 31px;
    height: 31px;
    overflow: visible;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.15;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
    transform-origin: center;
    animation: coordinateGlyph 4.8s var(--ease-out) infinite;
}

.coordinate-badge b {
    position: absolute;
    right: 5px;
    bottom: 3px;
    font-family: var(--legacy-label-font);
    font-size: 9px;
    font-weight: 400;
    line-height: 1;
    letter-spacing: .04em;
}

.coordinate-system svg,
.coordinate-sky svg { animation-name: coordinateGlyphRotate; }

.coordinate-agents svg,
.coordinate-engine svg { animation-name: coordinateGlyphPulse; }

.coordinate-interface svg,
.coordinate-download svg { animation-name: coordinateGlyphShift; }

.coordinate-badge:nth-child(1) { animation-delay: -.2s; }

.section-coordinate-light > .coordinate-badge {
    background: #000;
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .5);
}

.section-coordinate i {
    width: 1px;
    margin: 14px 0;
    background: var(--line);
}

.section-coordinate small {
    font-size: 11px;
    letter-spacing: .1em;
    writing-mode: vertical-rl;
}

.section-heading {
    max-width: 840px;
    margin-bottom: 56px;
}

.section-heading.compact {
    max-width: 1000px;
    margin-bottom: 38px;
}

.section-heading h2,
.showcase-copy h2,
.download-copy h2 {
    margin: 0;
    font-family: var(--legacy-title-font);
    font-size: clamp(30px, 2.8vw, 40px);
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: .015em;
}

.section-heading > p,
.showcase-copy > p:last-of-type,
.download-copy > p:last-of-type {
    max-width: 680px;
    margin: 30px 0 0;
    color: var(--muted);
    font-size: 15px;
    line-height: var(--line-base);
}

.section-heading > p + p {
    margin-top: 14px;
}

.hero {
    min-height: calc(100svh - var(--header-height));
    display: grid;
    grid-template-columns: minmax(0, 1200px);
    justify-content: center;
    align-items: center;
    padding-top: clamp(55px, 8vh, 104px);
    padding-right: clamp(100px, 9vw, 150px);
    padding-bottom: clamp(60px, 9vh, 112px);
    text-align: center;
}

.hero-copy {
    position: relative;
    z-index: 2;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    margin: 0 auto;
}

.hero-position {
    margin: 0 0 18px;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: .16em;
}

.hero h1 {
    margin: 0;
    font-family: var(--legacy-title-font);
    font-size: clamp(40px, 3.35vw, 48px);
    font-weight: 400;
    line-height: 1.28;
    letter-spacing: .015em;
}

.hero h1 > span {
    display: block;
}

@media (min-width: 1121px) {
    .hero h1 {
        font-size: clamp(34px, 2.95vw, 44px);
        white-space: nowrap;
    }
}

.hero h1 em {
    position: relative;
    display: inline-block;
    font-style: normal;
}

.hero h1 em::after {
    display: none;
}

.hero-lead {
    max-width: 600px;
    margin: 18px auto 0;
    color: var(--muted);
    font-size: var(--type-lg);
    line-height: var(--line-lg);
    letter-spacing: 0;
}

.hero-subhead {
    max-width: 620px;
    margin: 32px auto 0;
    color: var(--ink);
    font-family: var(--legacy-title-font);
    font-size: clamp(18px, 1.42vw, 22px);
    line-height: 1.65;
    letter-spacing: .015em;
}

#workspaceTitle span {
    display: inline-block;
    white-space: nowrap;
}

.hero-actions {
    min-width: 0;
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 10px;
    margin-top: 42px;
}

.button {
    max-width: 100%;
    min-height: 66px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ink);
    transition: transform .2s ease, background .2s ease, color .2s ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button-primary {
    min-width: 304px;
    justify-content: flex-start;
    background: var(--ink);
    color: var(--paper);
}

.button-icon {
    align-self: stretch;
    width: 62px;
    display: grid;
    place-items: center;
    border-right: 1px solid rgba(255, 255, 255, .35);
}

.button svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    vector-effect: non-scaling-stroke;
}

.button-primary > span:nth-child(2) {
    min-width: 0;
    display: grid;
    gap: 5px;
    padding: 0 20px;
}

.button-primary strong {
    font-size: var(--type-base);
    font-weight: 500;
    letter-spacing: .02em;
}

.button-primary small {
    color: rgba(255, 255, 255, .65);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    letter-spacing: .04em;
}

.button-primary:hover {
    background: var(--soft-ink);
}

.button-quiet {
    min-width: 160px;
    gap: 17px;
    padding: 0 20px;
    background: var(--paper);
    font-size: var(--type-base);
}

.button-quiet svg {
    transition: transform .2s ease;
}

.button-quiet:hover {
    background: var(--wash);
}

.button-quiet:hover svg {
    transform: translateX(4px);
}

.hero-facts {
    min-width: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 42px 0 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.hero-facts > div {
    min-width: 0;
    padding: 14px 15px 15px;
    border-right: 1px solid var(--line);
    text-align: center;
}

.hero-facts > div:first-child {
    padding-left: 15px;
}

.hero-facts > div:last-child {
    border-right: 0;
}

.hero-facts dt,
.hero-facts dd {
    margin: 0;
}

.hero-facts dt {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    letter-spacing: .07em;
}

.hero-facts dd {
    margin-top: 7px;
    overflow: hidden;
    font-size: var(--type-sm);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hero-visual {
    position: relative;
    min-width: 0;
    border: 1px solid var(--ink);
    background: rgba(244, 244, 240, .62);
    box-shadow: 18px 18px 0 rgba(17, 17, 15, .04);
    transform: perspective(1100px) rotateY(var(--tilt-x, 0deg)) rotateX(var(--tilt-y, 0deg));
    transform-style: preserve-3d;
    transition: transform .2s ease-out;
}

.visual-index,
.visual-status {
    height: 41px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, .82);
    font-family: var(--latin-font);
    font-size: 11px;
    letter-spacing: .07em;
}

.visual-index strong {
    font-size: var(--type-xs);
    font-weight: 400;
}

.visual-status {
    border-top: 1px solid var(--line);
    border-bottom: 0;
    color: var(--muted);
}

.visual-status span:first-child {
    display: flex;
    align-items: center;
    gap: 8px;
}

.visual-status i {
    width: 7px;
    height: 7px;
    border: 1px solid var(--ink);
    background: var(--ink);
    animation: statusBlink 2s ease-in-out infinite;
}

.hero-diagram {
    display: none;
}

.hero-real-platform-media {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    display: block;
    background: var(--paper);
    object-fit: contain;
}

.hero-diagram path,
.hero-diagram circle,
.hero-diagram rect {
    vector-effect: non-scaling-stroke;
}

.diagram-grid-line {
    fill: none;
    stroke: rgba(17, 17, 15, .07);
    stroke-width: 1;
}

.measure-line,
.measure-tick {
    fill: none;
    stroke: rgba(17, 17, 15, .18);
    stroke-width: 1;
}

.measure-tick {
    stroke: rgba(17, 17, 15, .35);
}

.hero-solar-context path,
.hero-solar-context line,
.hero-solar-context ellipse,
.hero-solar-context circle,
.hero-building-model path,
.hero-sensor-plane path,
.hero-sensor-plane rect,
.hero-legend rect,
.hero-legend path,
.hero-orientation path,
.hero-orientation circle,
.hero-sun-readout rect,
.hero-sun-readout path,
.hero-sun-readout circle,
.diagram-labels path,
.diagram-labels circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1.05;
}

.hero-frame-line {
    fill: none;
    stroke: rgba(17, 17, 15, .15);
    stroke-width: 1;
}

.hero-horizon-ring,
.hero-horizon-back {
    stroke: rgba(17, 17, 15, .55) !important;
}

.hero-dome-latitude,
.hero-dome-meridian {
    stroke: rgba(17, 17, 15, .18) !important;
}

.hero-annual-paths path {
    stroke: rgba(17, 17, 15, .38) !important;
    stroke-dasharray: 4 7;
}

.hero-active-sun-path {
    stroke-width: 1.7 !important;
    stroke-dasharray: 8 8;
    animation: dashFlow 4s linear infinite;
}

.hero-sun-samples circle {
    fill: var(--paper) !important;
    stroke: rgba(17, 17, 15, .48) !important;
}

.hero-current-sun {
    fill: var(--ink) !important;
    stroke: var(--paper) !important;
    stroke-width: 2 !important;
}

.hero-current-ray {
    fill: none;
    stroke: rgba(17, 17, 15, .55) !important;
    stroke-width: 1;
    stroke-dasharray: 4 7;
}

.hero-diagram text {
    fill: var(--muted);
    font-family: var(--latin-font);
    font-size: 10px;
    letter-spacing: .04em;
}

.hero-building-floor {
    fill: rgba(255, 255, 255, .9) !important;
}

.hero-building-shell {
    stroke-width: 1.35 !important;
}

.hero-building-window {
    fill: rgba(17, 17, 15, .04) !important;
    stroke: rgba(17, 17, 15, .52) !important;
}

.sensor-hatch-line {
    fill: none;
    stroke: rgba(17, 17, 15, .36);
    stroke-width: 1;
}

.hero-sensor-fill {
    stroke: rgba(17, 17, 15, .58) !important;
}

.hero-sensor-grid {
    stroke: rgba(17, 17, 15, .54) !important;
}

.hero-sensor-hotspots rect {
    fill: rgba(17, 17, 15, .82) !important;
    stroke: var(--paper) !important;
    animation: hotspotSweep 3s steps(1, end) infinite;
}

.hero-sensor-hotspots rect:nth-child(2) { animation-delay: 1s; }
.hero-sensor-hotspots rect:nth-child(3) { animation-delay: 2s; }

.hero-legend rect:first-child,
.hero-sun-readout rect {
    fill: rgba(255, 255, 255, .88) !important;
}

.hero-legend text,
.hero-orientation text,
.hero-sun-readout text {
    font-size: 7px;
}

.hero-orientation {
    transform-box: fill-box;
    transform-origin: center;
    animation: orientationTurn 8s ease-in-out infinite;
}

.hero-sun-readout {
    animation: readoutPulse 4s ease-in-out infinite;
}

.diagram-labels path {
    stroke: var(--line);
}

.diagram-labels circle {
    fill: var(--ink);
}

.scan-line {
    fill: rgba(17, 17, 15, .65);
    opacity: 0;
    animation: verticalScan 5s ease-in-out infinite;
}

.capability-rail {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    background: var(--wash);
}

.capability-rail > div {
    min-height: 128px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 13px;
    padding: 20px 14px;
    border-right: 1px solid var(--line);
}

.capability-rail > div:last-child {
    border-right: 0;
}

.capability-rail strong {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
    font-family: var(--legacy-title-font);
    font-size: clamp(29px, 2.25vw, 40px);
    font-weight: 400;
}

.capability-count {
    font: inherit;
    font-weight: 400;
}

.capability-unit {
    font-family: var(--legacy-title-font);
    font-size: .62em;
    font-weight: 400;
}

.capability-rail span {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .07em;
}

.system-section,
.intelligence-section,
.sky-section,
.engine-section,
.feature-section,
.advantage-section,
.requirements-section {
    padding-top: clamp(90px, 11vw, 168px);
    padding-bottom: clamp(90px, 11vw, 168px);
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
    list-style: none;
}

.workflow-card {
    position: relative;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    padding: 24px 22px 22px;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    background: rgba(255, 255, 255, .86);
    transition: background .2s ease, transform .2s ease;
}

.workflow-card:hover {
    z-index: 2;
    background: var(--wash);
    transform: translateY(-5px);
}

.workflow-number {
    align-self: flex-end;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
}

.workflow-card svg {
    width: 62px;
    height: 62px;
    margin: 38px 0 42px;
}

.workflow-card svg path,
.workflow-card svg circle,
.workflow-card svg rect {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1.2;
    vector-effect: non-scaling-stroke;
}

.workflow-card h3 {
    margin: 0;
    font-family: var(--legacy-title-font);
    font-size: 19px;
    font-weight: 400;
    line-height: normal;
    letter-spacing: .08em;
}

.workflow-card p {
    margin: 18px 0 28px;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.workflow-card small {
    margin-top: auto;
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .07em;
}

.workspace-showcase {
    display: grid;
    grid-template-columns: minmax(410px, .48fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(40px, 6vw, 95px);
    padding-top: clamp(90px, 10vw, 150px);
    padding-bottom: clamp(90px, 10vw, 150px);
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    background: var(--wash);
}

.showcase-copy h2 {
    font-size: clamp(30px, 2.8vw, 40px);
}

.line-list {
    margin: 42px 0 0;
    padding: 0;
    border-top: 1px solid var(--line);
    list-style: none;
}

.line-list li {
    position: relative;
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 13px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.line-list span {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
}

.workspace-feature-list li {
    transition: color .22s ease, background .22s ease, padding-left .22s ease;
}

.workspace-feature-list li::after {
    content: "";
    position: absolute;
    top: -1px;
    bottom: -1px;
    left: 0;
    width: 2px;
    background: var(--ink);
    opacity: 0;
    transform: scaleY(.25);
    transition: opacity .22s ease, transform .22s ease;
}

.workspace-feature-list li.is-active {
    padding-left: 12px;
    background: rgba(255, 255, 255, .7);
    color: var(--ink);
}

.workspace-feature-list li.is-active::after {
    opacity: 1;
    transform: scaleY(1);
}

.workspace-feature-list li.is-active span {
    color: var(--ink);
}

.interface-model {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--ink);
    background: var(--paper);
    box-shadow: 20px 20px 0 rgba(17, 17, 15, .06);
}

.interface-animation {
    display: grid;
    grid-template-rows: 48px auto 40px;
}

.interface-animation-head,
.interface-animation-foot {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 0 15px;
    border-bottom: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: 9px;
    letter-spacing: .055em;
}

.interface-animation-head > span {
    color: var(--muted);
}

.interface-animation-head strong {
    overflow: hidden;
    font-family: var(--ui-font);
    font-size: 11px;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.interface-animation-head small {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 7px;
    white-space: nowrap;
}

.interface-animation-head small i,
.interface-animation-foot i {
    width: 6px;
    height: 6px;
    display: inline-block;
    border: 1px solid var(--ink);
    background: var(--ink);
    animation: statusBlink 2s ease-in-out infinite;
}

.interface-animation-media {
    position: relative;
    aspect-ratio: 1200 / 598;
    overflow: hidden;
    background: var(--wash);
}

.interface-animation-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.interface-animation-scan {
    position: absolute;
    z-index: 2;
    top: 0;
    right: 0;
    left: 0;
    height: 1px;
    background: rgba(17, 17, 15, .34);
    pointer-events: none;
    animation: workspaceScan 6s linear infinite;
}

.interface-animation-foot {
    justify-content: space-between;
    border-top: 1px solid var(--line);
    border-bottom: 0;
    color: var(--muted);
}

.interface-animation-foot > span:first-child {
    display: flex;
    align-items: center;
    gap: 7px;
}

.mock-toolbar {
    height: 52px;
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 0 15px;
    border-bottom: 1px solid var(--ink);
    font-family: var(--latin-font);
}

.mock-toolbar > span {
    color: var(--muted);
    font-size: 9px;
    letter-spacing: .06em;
}

.mock-toolbar > strong {
    font-family: var(--ui-font);
    font-size: var(--type-xs);
    font-weight: 500;
    letter-spacing: .035em;
}

.mock-toolbar > i {
    flex: 1;
    height: 1px;
    background: var(--line);
}

.mock-toolbar > small {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 9px;
    letter-spacing: .05em;
}

.mock-toolbar > small::before {
    content: "";
    width: 6px;
    height: 6px;
    border: 1px solid var(--ink);
    background: var(--ink);
}

.mock-workspace {
    min-height: 480px;
    display: grid;
    grid-template-columns: 190px minmax(300px, 1fr) 190px;
}

.mock-panel {
    padding: 0 13px 14px;
    border-right: 1px solid var(--ink);
    background: var(--wash);
}

.mock-results {
    border-right: 0;
    border-left: 1px solid var(--ink);
}

.mock-panel-title {
    height: 52px;
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0 -13px 14px;
    padding: 0 13px;
    border-bottom: 1px solid var(--line);
}

.mock-panel-title b {
    width: 25px;
    height: 25px;
    display: grid;
    place-items: center;
    border: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: 9px;
    font-weight: 400;
}

.mock-panel-title > span {
    display: grid;
    gap: 2px;
    font-size: 11px;
}

.mock-panel-title small {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 8px;
    letter-spacing: .05em;
}

.mock-panel label {
    display: grid;
    gap: 6px;
    margin: 0 0 12px;
    font-size: 10px;
}

.mock-panel label i {
    height: 30px;
    display: flex;
    align-items: center;
    padding: 0 8px;
    border: 1px solid var(--line);
    background: var(--paper);
    font-style: normal;
    font-size: 9px;
}

.mock-engine-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-bottom: 12px;
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
}

.mock-engine-row b {
    height: 28px;
    display: grid;
    place-items: center;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: 9px;
    font-weight: 400;
}

.mock-engine-row b:first-child {
    background: var(--ink);
    color: var(--paper);
}

.mock-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}

.mock-values span {
    display: grid;
    gap: 4px;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 8px;
}

.mock-values strong {
    padding: 7px 5px;
    border: 1px solid var(--line);
    background: var(--paper);
    color: var(--ink);
    font-size: 9px;
    font-weight: 400;
}

.mock-panel button {
    width: 100%;
    height: 35px;
    margin-top: 26px;
    background: var(--ink);
    color: var(--paper);
    font-size: 9px;
}

.mock-viewport {
    position: relative;
    min-width: 0;
    overflow: hidden;
    background-image:
        linear-gradient(to right, rgba(17, 17, 15, .05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(17, 17, 15, .05) 1px, transparent 1px);
    background-size: 22px 22px;
}

.viewport-label {
    position: absolute;
    z-index: 2;
    top: 12px;
    left: 12px;
    font-family: var(--latin-font);
    font-size: 8px;
    letter-spacing: .05em;
}

.mock-viewport svg {
    position: absolute;
    top: 48%;
    left: 50%;
    width: 94%;
    transform: translate(-50%, -50%);
}

.mock-viewport path,
.mock-viewport circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

.mock-grid-lines {
    stroke: rgba(17, 17, 15, .28) !important;
}

.mock-building {
    fill: rgba(255, 255, 255, .7) !important;
}

.mock-window {
    fill: rgba(17, 17, 15, .1) !important;
}

.mock-rays {
    stroke-dasharray: 4 7;
    animation: dashFlow 2.5s linear infinite;
}

.mock-sun {
    fill: var(--paper) !important;
    animation: sensorPulse 2s ease-in-out infinite;
}

.mock-sun-path {
    stroke-dasharray: 3 5;
    opacity: .75;
}

.mock-sun-sample {
    fill: var(--paper) !important;
    animation: sensorPulse 2.4s ease-in-out infinite;
}

.mock-sun-sample:nth-of-type(2) { animation-delay: .25s; }
.mock-sun-sample:nth-of-type(3) { animation-delay: .5s; }
.mock-sun-sample:nth-of-type(4) { animation-delay: .75s; }

.viewport-legend {
    position: absolute;
    z-index: 3;
    bottom: 51px;
    left: 12px;
    display: grid;
    justify-items: center;
    gap: 4px;
    padding: 7px 6px;
    border: 1px solid var(--ink);
    background: rgba(255, 255, 255, .9);
    font-family: var(--latin-font);
    font-size: 7px;
    line-height: 1;
}

.viewport-legend i {
    width: 7px;
    height: 72px;
    border: 1px solid var(--ink);
    background: linear-gradient(to bottom, var(--ink), #6e6e68 48%, var(--paper));
}

.viewport-compass {
    position: absolute;
    z-index: 3;
    right: 12px;
    bottom: 47px;
    width: 70px;
    height: 70px;
    padding: 4px;
    border: 1px solid var(--ink);
    background: rgba(255, 255, 255, .9);
}

.viewport-compass svg {
    position: static;
    width: 100%;
    height: 100%;
    transform: none;
}

.viewport-compass path,
.viewport-compass circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: .8;
}

.viewport-compass text {
    fill: var(--ink);
    font-family: var(--latin-font);
    font-size: 7px;
    text-anchor: middle;
}

.viewport-progress {
    position: absolute;
    right: 12px;
    bottom: 12px;
    left: 12px;
    height: 24px;
    display: flex;
    align-items: center;
    border: 1px solid var(--ink);
    background: rgba(255, 255, 255, .85);
}

.viewport-progress i {
    position: absolute;
    inset: 0 auto 0 0;
    width: 76%;
    background: var(--ink);
    animation: progressBreath 3s ease-in-out infinite alternate;
}

.viewport-progress span {
    position: relative;
    z-index: 2;
    padding-left: 7px;
    color: var(--paper);
    font-family: var(--latin-font);
    font-size: 8px;
    letter-spacing: .04em;
}

.result-stat {
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
}

.result-stat > span {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 8px;
}

.result-stat > strong {
    display: block;
    margin-top: 6px;
    font-family: var(--latin-font);
    font-size: 28px;
    font-weight: 400;
}

.result-stat small {
    font-size: 10px;
}

.result-bars {
    height: 92px;
    display: flex;
    align-items: flex-end;
    gap: 7px;
    padding: 13px 4px 0;
    border-bottom: 1px solid var(--line);
}

.result-bars i {
    width: 22px;
    height: var(--value);
    border: 1px solid var(--ink);
    background: repeating-linear-gradient(to top, var(--ink) 0 1px, transparent 1px 5px);
    transform-origin: bottom;
    animation: barIn 1s var(--ease-out) both;
}

.mock-results dl {
    margin: 14px 0;
}

.mock-results dl > div {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--latin-font);
    font-size: 9px;
}

.mock-results dt,
.mock-results dd {
    margin: 0;
}

.mock-results > p {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 22px;
    font-family: var(--latin-font);
    font-size: 8px;
}

.mock-results > p span {
    width: 6px;
    height: 6px;
    background: var(--ink);
}

.intelligence-section {
    background: var(--paper);
}

.intelligence-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
}

.intelligence-panel {
    min-height: 520px;
    display: flex;
    flex-direction: column;
    padding: 26px 26px 30px;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    background: var(--paper);
}

.intelligence-panel-dark {
    background: var(--ink);
    color: var(--paper);
}

.intelligence-panel > header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding-bottom: 17px;
    border-bottom: 1px solid var(--line);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .07em;
}

.intelligence-panel-dark > header {
    border-color: rgba(255, 255, 255, .28);
}

.intelligence-panel > header small {
    color: var(--muted);
    font-size: 10px;
}

.intelligence-panel-dark > header small {
    color: rgba(255, 255, 255, .62);
}

.intelligence-panel > svg {
    width: 96px;
    height: 72px;
    margin: 46px 0 38px;
}

.intelligence-panel > svg path,
.intelligence-panel > svg circle {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.2;
    vector-effect: non-scaling-stroke;
}

.intelligence-panel h3 {
    margin: 0;
    font-family: var(--ui-font);
    font-size: 20px;
    font-weight: 500;
    line-height: 1.45;
}

.intelligence-panel p {
    margin: 18px 0 24px;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.intelligence-panel-dark p {
    color: rgba(255, 255, 255, .68);
}

.intelligence-panel ul {
    margin: auto 0 0;
    padding: 0;
    border-top: 1px solid var(--line);
    list-style: none;
}

.intelligence-panel-dark ul {
    border-color: rgba(255, 255, 255, .28);
}

.intelligence-panel li {
    position: relative;
    padding: 10px 0 10px 17px;
    border-bottom: 1px solid var(--line);
    font-size: var(--type-sm);
    line-height: var(--line-sm);
}

.intelligence-panel-dark li {
    border-color: rgba(255, 255, 255, .28);
}

.intelligence-panel li::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 1px;
    width: 6px;
    height: 6px;
    border: 1px solid currentColor;
}

.intelligence-chain {
    display: grid;
    grid-template-columns: auto minmax(18px, 1fr) auto minmax(18px, 1fr) auto minmax(18px, 1fr) auto minmax(18px, 1fr) auto;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding: 18px 20px;
    border: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .04em;
}

.intelligence-chain i {
    position: relative;
    height: 1px;
    background: var(--ink);
}

.intelligence-chain i::after {
    content: "";
    position: absolute;
    top: -3px;
    right: 0;
    width: 6px;
    height: 6px;
    border-top: 1px solid var(--ink);
    border-right: 1px solid var(--ink);
    transform: rotate(45deg);
}

.intelligence-chain strong {
    padding: 8px 10px;
    background: var(--ink);
    color: var(--paper);
    font-weight: 400;
    text-align: center;
}

.sky-section {
    background: var(--paper);
}

.sky-comparison {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
}

.sky-card {
    min-width: 0;
    padding: clamp(28px, 4vw, 56px);
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
}

.sky-card-dark {
    background: var(--ink);
    color: var(--paper);
}

.sky-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid currentColor;
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .07em;
}

.sky-card-head strong {
    font-weight: 400;
}

.sky-symbol {
    height: 285px;
    display: grid;
    place-items: center;
}

.sky-symbol svg {
    width: min(100%, 380px);
}

.sky-symbol path,
.sky-symbol circle {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.1;
    vector-effect: non-scaling-stroke;
}

.physical-sky circle {
    fill: var(--paper);
    animation: sensorPulse 2.2s ease-in-out infinite;
}

.sun-rays-symbol {
    transform-box: fill-box;
    transform-origin: center;
    animation: slowSpin 18s linear infinite;
}

.measured-sky circle:nth-of-type(2),
.measured-sky circle:nth-of-type(3) {
    opacity: .42;
}

.measured-contour {
    stroke-dasharray: 180;
    stroke-dashoffset: 180;
    animation: lineDraw 4.5s ease-in-out infinite alternate;
}

.measured-sky text {
    fill: currentColor;
    font-family: var(--latin-font);
    font-size: 10px;
}

.north-indicator {
    fill: currentColor !important;
}

.sky-card h3 {
    margin: 0;
    font-family: var(--latin-font);
    font-size: 27px;
    font-weight: 400;
    line-height: normal;
    letter-spacing: .02em;
}

.sky-card > p {
    margin: 22px 0 30px;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.sky-card-dark > p {
    color: rgba(255, 255, 255, .66);
}

.sky-card code {
    padding: 1px 4px;
    border: 1px solid currentColor;
    font-size: .84em;
}

.sky-card ul {
    margin: 0;
    padding: 0;
    border-top: 1px solid currentColor;
    list-style: none;
}

.sky-card li {
    padding: 11px 0;
    border-bottom: 1px solid currentColor;
    font-size: var(--type-sm);
    line-height: var(--line-sm);
}

.sky-card-dark li,
.sky-card-dark ul,
.sky-card-dark .sky-card-head {
    border-color: rgba(255, 255, 255, .34);
}

.engine-section {
    border-top: 1px solid var(--ink);
    background: var(--wash);
}

.engine-console {
    display: grid;
    grid-template-columns: 190px minmax(420px, 1fr) minmax(250px, .45fr);
    min-height: 480px;
    border: 1px solid var(--ink);
    background: var(--paper);
}

.engine-console.is-auto-playing .engine-tabs button[aria-selected="true"]::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 2px;
    background: currentColor;
    transform-origin: left;
    animation: engineTabProgress 4.8s linear forwards;
}

.engine-tabs {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--ink);
    background: var(--wash);
}

.engine-tabs button {
    position: relative;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 17px;
    border-bottom: 1px solid var(--line);
    background: transparent;
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .04em;
    text-align: left;
    cursor: pointer;
}

.engine-tabs button::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 4px;
    background: currentColor;
    transform: scaleY(0);
    transition: transform .2s ease;
}

.engine-tabs button[aria-selected="true"] {
    background: var(--ink);
    color: var(--paper);
}

.engine-tabs button[aria-selected="true"]::before {
    transform: scaleY(1);
}

.engine-tabs small {
    padding: 3px 5px;
    border: 1px solid currentColor;
    font-size: 10px;
}

.engine-map {
    position: relative;
    min-height: 420px;
    overflow: hidden;
    border-right: 1px solid var(--ink);
    background-image:
        linear-gradient(to right, rgba(17, 17, 15, .055) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(17, 17, 15, .055) 1px, transparent 1px);
    background-size: 28px 28px;
}

.engine-map-label {
    position: absolute;
    top: 17px;
    left: 18px;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 11px;
    letter-spacing: .05em;
}

.engine-map > svg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 92%;
    transform: translate(-50%, -50%);
}

.route-path {
    fill: none;
    stroke: var(--line);
    stroke-width: 1.2;
    vector-effect: non-scaling-stroke;
}

.route-path-main {
    stroke: var(--ink);
    stroke-dasharray: 5 7;
    animation: dashFlow 2s linear infinite;
}

.route-node {
    position: absolute;
    z-index: 2;
    width: 72px;
    height: 72px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 5px;
    border: 1px solid var(--ink);
    background: var(--paper);
    font-family: var(--latin-font);
}

.route-node span {
    color: var(--muted);
    font-size: 10px;
    letter-spacing: .05em;
}

.route-node strong {
    font-size: var(--type-base);
    font-weight: 400;
}

.route-node.is-active {
    background: var(--ink);
    color: var(--paper);
    box-shadow: 0 0 0 7px rgba(17, 17, 15, .08);
}

.route-node.is-active span {
    color: rgba(255, 255, 255, .62);
}

.route-input { top: calc(50% - 36px); left: 4%; }
.route-gpu { top: calc(25% - 36px); left: 37%; }
.route-acc { top: calc(50% - 36px); left: 37%; }
.route-cpu { top: calc(75% - 36px); left: 37%; }
.route-output { top: calc(50% - 36px); right: 4%; width: 88px; }

.engine-description {
    display: flex;
    flex-direction: column;
    padding: 34px 30px;
}

.engine-description > span {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    letter-spacing: .07em;
}

.engine-description h3 {
    margin: 45px 0 0;
    font-family: var(--latin-font);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.45;
}

.engine-description > p {
    margin: 25px 0 40px;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.engine-description dl {
    margin: auto 0 0;
    border-top: 1px solid var(--line);
}

.engine-description dl > div {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    font-size: var(--type-sm);
    line-height: var(--line-sm);
}

.engine-description dt,
.engine-description dd {
    margin: 0;
}

.engine-description dt {
    color: var(--muted);
}

.engine-benchmark {
    margin-top: 38px;
    border: 1px solid var(--ink);
    background: var(--paper);
}

.engine-benchmark-head {
    display: grid;
    grid-template-columns: minmax(320px, .8fr) minmax(360px, 1fr);
    align-items: end;
    gap: 40px;
    padding: 26px 28px;
    border-bottom: 1px solid var(--ink);
}

.engine-benchmark-head span {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 10px;
    letter-spacing: .08em;
}

.engine-benchmark-head h3 {
    margin: 10px 0 0;
    font-family: var(--legacy-title-font);
    font-size: clamp(22px, 2vw, 29px);
    font-weight: 400;
    line-height: 1.4;
}

.engine-benchmark-head p {
    margin: 0;
    color: var(--muted);
    font-size: var(--type-sm);
    line-height: var(--line-sm);
}

.engine-sample-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.engine-sample {
    min-width: 0;
    margin: 0;
    border-right: 1px solid var(--ink);
}

.engine-sample:last-child { border-right: 0; }

.engine-sample-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 800 / 520;
    background: #111;
}

.engine-sample-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.engine-sample figcaption {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 5px 20px;
    padding: 18px 22px;
    border-top: 1px solid var(--ink);
}

.engine-sample figcaption span,
.engine-sample figcaption small {
    font-family: var(--latin-font);
    font-size: 10px;
    letter-spacing: .05em;
}

.engine-sample figcaption span { align-self: center; }
.engine-sample figcaption strong {
    grid-row: 1 / span 2;
    grid-column: 2;
    align-self: center;
    font-family: var(--latin-font);
    font-size: 28px;
    font-weight: 400;
}
.engine-sample figcaption small { color: var(--muted); }

.engine-sample-mitsuba figcaption {
    background: var(--ink);
    color: var(--paper);
}

.engine-sample-mitsuba figcaption small { color: rgba(255, 255, 255, .63); }

.engine-benchmark-evidence {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
}

.engine-benchmark-evidence > div {
    min-height: 128px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-content: center;
    gap: 7px 12px;
    padding: 20px 22px;
    border-right: 1px solid var(--line);
}

.engine-benchmark-evidence > div > span,
.engine-benchmark-evidence > div > small {
    font-size: var(--type-xs);
}

.engine-benchmark-evidence > div > span { color: var(--muted); }
.engine-benchmark-evidence > div > strong {
    grid-row: 1 / span 2;
    grid-column: 2;
    align-self: center;
    font-family: var(--latin-font);
    font-size: 24px;
    font-weight: 400;
}
.engine-benchmark-evidence > div > small { grid-column: 1; }

.engine-benchmark-evidence > p {
    grid-column: 1 / -1;
    margin: 0;
    padding: 14px 22px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 11px;
    line-height: 1.7;
}

.feature-section {
    border-top: 1px solid var(--ink);
}

.feature-intro {
    max-width: 790px !important;
}

.feature-matrix {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
}

.feature-cell-evaluated {
    min-height: 720px;
    flex-direction: column;
}

.feature-cell-evaluated .feature-copy {
    min-height: 215px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 25px 24px 22px;
}

.feature-cell-evaluated .feature-copy h3 {
    margin: 46px 0 0;
}

.feature-cell-evaluated .feature-media {
    height: 250px;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 8px;
    border-top: 1px solid var(--line);
    background: var(--wash);
}

.agent-evaluation {
    position: relative;
    min-height: 240px;
    padding: 19px 21px 23px;
    border-top: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
}

.agent-evaluation header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    padding-bottom: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, .22);
    font-family: var(--latin-font);
    font-size: 10px;
    letter-spacing: .05em;
}

.agent-evaluation header span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.agent-bot-mark {
    width: 23px;
    height: 23px;
    flex: 0 0 23px;
    overflow: visible;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.25;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
}

.agent-bot-mark circle {
    fill: currentColor;
    stroke: none;
}

.agent-evaluation header i {
    width: 7px;
    height: 7px;
    border: 1px solid currentColor;
    animation: statusBlink 1.5s ease-in-out infinite;
}

.agent-evaluation header small { color: rgba(255, 255, 255, .52); }

.agent-evaluation p {
    margin: 18px 0 0;
    color: rgba(255, 255, 255, .83);
    font-size: var(--type-sm);
    line-height: 1.9;
}

.typing-cursor {
    display: inline-block;
    width: 7px;
    height: 14px;
    margin-left: 3px;
    border-bottom: 1px solid currentColor;
    animation: statusBlink .8s steps(2, end) infinite;
}

.feature-cell {
    min-width: 0;
    min-height: 360px;
    display: flex;
    overflow: hidden;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    background: var(--paper);
}

.feature-cell-split .feature-copy {
    flex: 0 0 37%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 25px 24px;
    background: var(--paper);
}

.feature-cell-split .feature-media {
    flex: 1 1 auto;
    min-width: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 12px;
    border-left: 1px solid var(--line);
    background: var(--wash);
}

.feature-media img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    object-position: center;
}

.feature-code {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .07em;
}

.feature-cell h3 {
    margin: auto 0 0;
    font-family: var(--latin-font);
    font-size: clamp(20px, 1.9vw, 26px);
    font-weight: 400;
    line-height: 1.35;
    letter-spacing: .01em;
    overflow-wrap: anywhere;
}

.feature-cell p {
    margin: 17px 0 0;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
    overflow-wrap: anywhere;
}

.feature-note {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    max-width: 100%;
    margin-top: auto;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 10px;
    line-height: var(--line-xs);
    letter-spacing: .07em;
    white-space: nowrap;
}

.feature-note i {
    width: 6px;
    height: 6px;
    flex: 0 0 6px;
    border: 1px solid currentColor;
    background: currentColor;
    animation: statusBlink 2s ease-in-out infinite;
}

.feature-cell-annual {
    grid-column: 1 / -1;
    min-height: 420px;
}

.feature-cell-annual .feature-copy {
    flex-basis: 29%;
}

.advantage-section {
    border-top: 1px solid var(--ink);
    background: var(--wash);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
}

.advantage-section-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 36px;
    border-top: 1px solid var(--ink);
    border-left: 1px solid var(--ink);
}

.advantage-section-links a {
    min-height: 94px;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr 1fr;
    align-content: center;
    column-gap: 14px;
    padding: 18px 20px;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    transition: background .18s ease, color .18s ease;
}

.advantage-section-links a:hover {
    background: var(--ink);
    color: var(--paper);
}

.advantage-section-links span {
    grid-row: 1 / -1;
    align-self: center;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 11px;
}

.advantage-section-links strong {
    align-self: end;
    font-size: var(--type-base);
    font-weight: 500;
}

.advantage-section-links small {
    align-self: start;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 9px;
    letter-spacing: .08em;
}

.advantage-card {
    min-height: 330px;
    display: flex;
    flex-direction: column;
    padding: 28px 25px;
    border-right: 1px solid var(--ink);
}

.advantage-card:last-child {
    border-right: 0;
}

.advantage-card > span {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
}

.advantage-card h3 {
    margin: 80px 0 0;
    font-family: var(--latin-font);
    font-size: 21px;
    font-weight: 400;
    line-height: 1.5;
    letter-spacing: 0;
}

.advantage-card p {
    margin: 20px 0 30px;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.advantage-card small {
    margin-top: auto;
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .06em;
}

.download-section {
    overflow: hidden;
    background: var(--ink);
    color: var(--paper);
}

.download-inner {
    display: grid;
    grid-template-columns: minmax(340px, .8fr) minmax(480px, .72fr);
    align-items: center;
    gap: clamp(50px, 8vw, 130px);
    padding-top: clamp(90px, 10vw, 150px);
    padding-bottom: clamp(90px, 10vw, 150px);
}

.section-coordinate-light {
    border-color: rgba(255, 255, 255, .25);
    color: rgba(255, 255, 255, .55);
}

.section-coordinate-light i {
    background: rgba(255, 255, 255, .25);
}

.download-copy > p:last-of-type {
    color: rgba(255, 255, 255, .62);
}

.download-requirements {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 42px;
}

.download-requirements span {
    padding: 8px 10px;
    border: 1px solid rgba(255, 255, 255, .35);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .04em;
}

.download-card {
    min-width: 0;
    border: 1px solid var(--paper);
    background: var(--paper);
    color: var(--ink);
    box-shadow: 20px 20px 0 rgba(255, 255, 255, .08);
}

.download-card > header {
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    letter-spacing: .06em;
}

.download-card > header strong {
    font-size: var(--type-base);
    font-weight: 400;
}

.download-product {
    display: grid;
    grid-template-columns: 70px 1fr;
    align-items: center;
    gap: 20px;
    padding: 30px;
}

.download-product svg {
    width: 64px;
}

.download-product path,
.download-product circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1.2;
    vector-effect: non-scaling-stroke;
}

.download-product h3 {
    margin: 0;
    font-family: var(--legacy-title-font);
    font-size: 20px;
    font-weight: 400;
    line-height: 1.45;
    letter-spacing: .04em;
}

.download-product p {
    margin: 8px 0 0;
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .035em;
}

.download-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--ink);
}

.download-action {
    min-width: 0;
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px 20px;
    border-right: 1px solid var(--ink);
    background: var(--paper);
    transition: background .2s ease, color .2s ease;
}

.download-action:last-child {
    border-right: 0;
}

.download-action:nth-child(2) {
    border-right: 0;
}

.download-action-manual {
    grid-column: 1 / -1;
    border-top: 1px solid var(--ink);
    border-right: 0;
}

.download-action:hover {
    background: var(--wash);
}

.download-action-primary {
    background: var(--ink);
    color: var(--paper);
}

.download-action-primary:hover {
    background: var(--soft-ink);
}

.download-action span {
    min-width: 0;
    display: grid;
    gap: 6px;
}

.download-action strong {
    font-size: var(--type-base);
    font-weight: 500;
    line-height: var(--line-sm);
}

.download-action small {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: 10px;
    line-height: var(--line-xs);
    letter-spacing: .04em;
}

.download-action-primary small {
    color: rgba(255, 255, 255, .62);
}

.download-action svg {
    width: 22px;
    flex: 0 0 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
}

.requirements-grid {
    display: grid;
    grid-template-columns: minmax(350px, .8fr) minmax(400px, 1fr);
    gap: clamp(40px, 7vw, 110px);
}

.requirements-table {
    margin: 0;
    border-top: 1px solid var(--ink);
}

.requirements-table > div {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.requirements-table dt,
.requirements-table dd {
    margin: 0;
}

.requirements-table dt {
    color: var(--muted);
}

.requirements-table code {
    font-size: var(--type-xs);
}

.faq-list {
    border-top: 1px solid var(--ink);
}

.faq-list details {
    border-bottom: 1px solid var(--line);
}

.faq-list summary {
    min-height: 62px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    font-size: var(--type-base);
    cursor: pointer;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary span {
    position: relative;
    width: 16px;
    height: 16px;
    flex: 0 0 16px;
}

.faq-list summary span::before,
.faq-list summary span::after {
    content: "";
    position: absolute;
    top: 7px;
    left: 1px;
    width: 14px;
    height: 1px;
    background: var(--ink);
    transition: transform .2s ease;
}

.faq-list summary span::after {
    transform: rotate(90deg);
}

.faq-list details[open] summary span::after {
    transform: rotate(0);
}

.faq-list details p {
    margin: 0;
    padding: 0 36px 22px 0;
    color: var(--muted);
    font-size: var(--type-base);
    line-height: var(--line-base);
}

.site-footer {
    min-height: 150px;
    display: grid;
    grid-template-columns: minmax(360px, 1fr) auto 86px;
    align-items: stretch;
    border-top: 1px solid var(--ink);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 28px 38px;
}

.footer-brand svg {
    width: 48px;
    height: 48px;
}

.footer-brand path,
.footer-brand circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1.2;
    vector-effect: non-scaling-stroke;
}

.footer-brand > div {
    display: grid;
    gap: 7px;
}

.footer-brand strong {
    font-size: var(--type-base);
    font-weight: 500;
    letter-spacing: .035em;
}

.footer-brand small,
.footer-meta {
    color: var(--muted);
    font-family: var(--latin-font);
    font-size: var(--type-xs);
    line-height: var(--line-xs);
    letter-spacing: .05em;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 12px;
    padding: 28px;
    border-left: 1px solid var(--line);
}

.footer-meta b {
    font-weight: 400;
}

.back-top {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 7px;
    border-left: 1px solid var(--ink);
    font-family: var(--latin-font);
    font-size: 11px;
    letter-spacing: .05em;
    transition: background .2s ease, color .2s ease;
}

.back-top:hover {
    background: var(--ink);
    color: var(--paper);
}

.back-top svg {
    width: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.4;
}

.noscript-note {
    position: fixed;
    z-index: 300;
    right: 15px;
    bottom: 15px;
    left: 15px;
    padding: 12px;
    border: 1px solid var(--paper);
    background: var(--ink);
    color: var(--paper);
    text-align: center;
    font-size: var(--type-xs);
}

.js .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .75s var(--ease-out), transform .75s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
}

.js .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes lineDraw {
    to { stroke-dashoffset: 0; }
}

@keyframes nodeIn {
    from { opacity: 0; transform: scale(.3); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes heroUnderline {
    to { transform: scaleX(1); }
}

@keyframes coordinateTileBreath {
    0%, 100% { transform: translateY(0); }
    45% { transform: translateY(-2px); }
    55% { transform: translateY(-2px); }
}

@keyframes coordinateScanX {
    0%, 16% { transform: translateX(-22px); opacity: 0; }
    34%, 66% { opacity: .18; }
    84%, 100% { transform: translateX(22px); opacity: 0; }
}

@keyframes coordinateScanY {
    0%, 18% { transform: translateY(22px); opacity: 0; }
    36%, 68% { opacity: .18; }
    86%, 100% { transform: translateY(-22px); opacity: 0; }
}

@keyframes coordinateGlyph {
    0%, 100% { transform: scale(.9); opacity: .72; }
    42%, 58% { transform: scale(1); opacity: 1; }
}

@keyframes coordinateGlyphRotate {
    0%, 100% { transform: rotate(-7deg) scale(.92); opacity: .76; }
    50% { transform: rotate(7deg) scale(1); opacity: 1; }
}

@keyframes coordinateGlyphPulse {
    0%, 100% { transform: scale(.88); opacity: .7; }
    46%, 58% { transform: scale(1.05); opacity: 1; }
}

@keyframes coordinateGlyphShift {
    0%, 100% { transform: translateY(2px); opacity: .75; }
    50% { transform: translateY(-2px); opacity: 1; }
}

@keyframes siteIntroExit {
    0% { opacity: 1; visibility: visible; }
    100% {
        opacity: 0;
        visibility: hidden;
    }
}

@keyframes introSymbolAssemble {
    0% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) rotate(var(--r)) scale(.12);
    }
    24% {
        opacity: 1;
        transform: translate(0, 0) rotate(0deg) scale(1.06);
    }
    35%, 72% {
        opacity: 1;
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
    100% {
        opacity: 1;
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
}

@keyframes introGlyphPulse {
    0% { opacity: .35; transform: scale(.78) rotate(-5deg); }
    48% { opacity: 1; transform: scale(1.08) rotate(3deg); }
    100% { opacity: .86; transform: scale(1) rotate(0deg); }
}

@keyframes introGridScan {
    0%, 8% { left: 0; opacity: 0; }
    18%, 78% { opacity: .65; }
    92%, 100% { left: 100%; opacity: 0; }
}

@keyframes introGridFrame {
    0% { opacity: 0; transform: scale(.96); }
    22%, 76% { opacity: 1; transform: scale(1); }
    100% { opacity: .55; transform: scale(1); }
}

@keyframes siteIntroCaption {
    0%, 54% { opacity: 0; transform: translateY(42vh); }
    76%, 100% { opacity: 1; transform: translateY(0); }
}

@keyframes siteIntroEnterHint {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: .78; transform: translateY(0); }
}

@keyframes siteIntroEnterPulse {
    0%, 100% { opacity: .42; }
    50% { opacity: .9; }
}

@keyframes statusBlink {
    0%, 100% { background: transparent; }
    50% { background: currentColor; }
}

@keyframes dashFlow {
    to { stroke-dashoffset: -30; }
}

@keyframes sensorPulse {
    0%, 100% { fill: var(--paper); }
    50% { fill: var(--ink); }
}

@keyframes hotspotSweep {
    0%, 32%, 100% { opacity: .14; }
    33%, 66% { opacity: .9; }
    67%, 99% { opacity: .38; }
}

@keyframes orientationTurn {
    0%, 100% { transform: rotate(-6deg); }
    50% { transform: rotate(12deg); }
}

@keyframes readoutPulse {
    0%, 100% { opacity: .68; }
    50% { opacity: 1; }
}

@keyframes workspaceScan {
    0% { transform: translateY(0); opacity: 0; }
    8%, 86% { opacity: .35; }
    100% { transform: translateY(610px); opacity: 0; }
}

@keyframes sunArc {
    from { transform: rotate(-45deg); }
    to { transform: rotate(45deg); }
}

@keyframes verticalScan {
    0% { transform: translateY(0); opacity: 0; }
    10% { opacity: .45; }
    80% { opacity: .45; }
    100% { transform: translateY(470px); opacity: 0; }
}

@keyframes slowSpin {
    to { transform: rotate(360deg); }
}

@keyframes progressBreath {
    from { width: 68%; }
    to { width: 82%; }
}

@keyframes engineTabProgress {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

@keyframes barIn {
    from { transform: scaleY(0); }
    to { transform: scaleY(1); }
}

@media (max-width: 1320px) {
    .brand-copy small {
        display: none;
    }

    .brand-copy {
        padding: 0 20px;
    }

    .hero {
        grid-template-columns: minmax(0, 1200px);
    }

    .hero h1 {
        font-size: clamp(40px, 3.4vw, 46px);
    }

    .mock-workspace {
        grid-template-columns: 164px minmax(280px, 1fr) 164px;
    }

    .engine-console {
        grid-template-columns: 170px minmax(380px, 1fr) minmax(225px, .42fr);
    }
}

@media (max-width: 1120px) {
    .site-header {
        grid-template-columns: minmax(330px, 1fr) auto;
    }

    .section-shell {
        padding-right: 30px;
        padding-left: 110px;
    }

    .hero {
        grid-template-columns: 1fr;
        min-height: 0;
        padding-top: 78px;
        padding-right: 110px;
    }

    .hero-copy {
        max-width: 820px;
        margin-right: auto;
        margin-left: auto;
    }

    .hero h1 {
        font-size: clamp(42px, 4.7vw, 52px);
    }

    .hero-visual {
        width: min(100%, 840px);
        margin-left: auto;
    }

    .capability-rail {
        grid-template-columns: repeat(3, 1fr);
    }

    .capability-rail > div:nth-child(3n) {
        border-right: 0;
    }

    .capability-rail > div:nth-child(-n+3) {
        border-bottom: 1px solid var(--line);
    }

    .workflow-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .workflow-card {
        min-height: 320px;
    }

    .workspace-showcase {
        grid-template-columns: 1fr;
    }

    .showcase-copy {
        max-width: 690px;
    }

    .engine-console {
        grid-template-columns: 150px minmax(380px, 1fr);
    }

    .engine-description {
        grid-column: 1 / -1;
        min-height: 260px;
        display: grid;
        grid-template-columns: .65fr 1fr;
        column-gap: 40px;
        border-top: 1px solid var(--ink);
    }

    .engine-description h3 {
        grid-column: 1;
        margin-top: 24px;
    }

    .engine-description > p {
        grid-column: 2;
        grid-row: 1 / span 2;
        margin: 0;
    }

    .engine-description dl {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        margin-top: 28px;
    }

    .engine-description dl > div {
        padding-right: 14px;
        border-right: 1px solid var(--line);
    }

    .engine-benchmark-head {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-matrix { grid-template-columns: repeat(3, minmax(0, 1fr)); }

    .feature-cell-evaluated { min-height: 680px; }

    .feature-cell-evaluated .feature-copy { min-height: 235px; }

    .advantage-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .advantage-card:nth-child(2) {
        border-right: 0;
    }

    .advantage-card:nth-child(-n+2) {
        border-bottom: 1px solid var(--ink);
    }

    .download-inner {
        grid-template-columns: 1fr;
    }

    .download-copy {
        max-width: 760px;
    }

    .download-card {
        width: min(100%, 720px);
        margin-left: auto;
    }
}

@media (max-width: 820px) {
    :root {
        --header-height: 62px;
    }

    .site-header {
        grid-template-columns: 1fr 62px;
    }

    .brand-mark {
        width: 62px;
        flex-basis: 62px;
    }

    .brand-mark svg {
        width: 36px;
        height: 36px;
    }

    .brand-copy {
        padding: 0 15px;
    }

    .brand-copy strong {
        font-size: 14px;
        letter-spacing: .08em;
    }

    .menu-toggle {
        position: relative;
        z-index: 102;
        display: grid;
        place-content: center;
        gap: 4px;
        padding: 0;
        border-left: 1px solid var(--ink);
        background: var(--paper);
        cursor: pointer;
    }

    .menu-toggle > span:not(.sr-only) {
        width: 22px;
        height: 1px;
        background: var(--ink);
        transition: transform .2s ease, opacity .2s ease;
    }

    .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
    .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

    .site-nav {
        position: fixed;
        z-index: 101;
        top: var(--header-height);
        right: 0;
        bottom: 0;
        left: 0;
        display: grid;
        align-content: start;
        border: 0;
        background: rgba(255, 255, 255, .98);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        transition: opacity .2s ease, transform .2s ease, visibility .2s;
    }

    .nav-feature-menu {
        display: contents;
    }

    .nav-feature-toggle {
        min-height: 64px;
        justify-content: space-between;
        padding: 0 25px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        font-size: 15px;
    }

    .nav-feature-links {
        position: static;
        width: 100%;
        display: none;
        grid-template-columns: 1fr;
        border: 0;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .nav-feature-links.is-open { display: grid; }

    .site-nav .nav-feature-links a,
    .site-nav .nav-feature-links a:nth-child(2n),
    .site-nav .nav-feature-links a:nth-last-child(-n+2) {
        min-height: 62px;
        grid-template-columns: 28px 1fr auto;
        grid-template-rows: 1fr;
        padding: 12px 25px 12px 38px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        background: var(--wash);
    }

    .site-nav .nav-feature-links a > span { grid-row: 1; }
    .site-nav .nav-feature-links a > strong,
    .site-nav .nav-feature-links a > small { align-self: center; }

    .site-nav > .nav-download { min-width: 0; }

    .site-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .site-nav a {
        min-height: 64px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 25px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        font-size: 15px;
    }

    .site-nav a::after {
        display: none;
    }

    .site-nav a::before {
        content: "↗";
        order: 2;
        font-family: var(--latin-font);
        font-size: 12px;
    }

    .section-shell {
        padding-right: 22px;
        padding-left: 22px;
    }

    .section-coordinate {
        top: 14px;
        bottom: auto;
        left: 10px;
        width: 42px;
        display: block;
        padding: 0;
        border-right: 0;
        z-index: 3;
    }

    .section-coordinate > span:not(.coordinate-badge),
    .section-coordinate i,
    .section-coordinate small {
        display: none;
    }

    .section-coordinate > .coordinate-badge {
        width: 42px;
        height: 42px;
    }

    .coordinate-badge svg {
        top: 5px;
        left: 5px;
        width: 25px;
        height: 25px;
    }

    .coordinate-badge b {
        right: 4px;
        bottom: 3px;
        font-size: 8px;
    }

    .hero {
        padding-top: 65px;
        padding-bottom: 72px;
    }

    .hero h1 {
        font-size: clamp(36px, 7.2vw, 46px);
    }

    .hero-lead {
        font-size: 15px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .button-primary,
    .button-quiet {
        width: 100%;
        min-width: 0;
    }

    .button-quiet {
        justify-content: space-between;
    }

    .hero-facts {
        grid-template-columns: 1fr;
    }

    .hero-facts > div,
    .hero-facts > div:first-child {
        padding: 12px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .hero-facts > div:last-child {
        border-bottom: 0;
    }

    .hero-visual {
        box-shadow: 10px 10px 0 rgba(17, 17, 15, .05);
    }

    .capability-rail {
        grid-template-columns: repeat(2, 1fr);
    }

    .capability-rail > div:nth-child(3n) {
        border-right: 1px solid var(--line);
    }

    .capability-rail > div:nth-child(2n) {
        border-right: 0;
    }

    .capability-rail > div:nth-child(-n+4) {
        border-bottom: 1px solid var(--line);
    }

    .section-heading {
        margin-bottom: 40px;
    }

    .section-heading h2,
    .showcase-copy h2,
    .download-copy h2 {
        font-size: clamp(28px, 5.7vw, 36px);
    }

    .section-heading > p,
    .showcase-copy > p:last-of-type,
    .download-copy > p:last-of-type {
        margin-top: 22px;
        font-size: 14px;
    }

    .section-heading > p + p {
        margin-top: 12px;
    }

    .workflow-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .workflow-card {
        min-height: 300px;
    }

    .interface-model:not(.interface-animation) {
        overflow-x: auto;
    }

    .mock-toolbar,
    .mock-workspace {
        min-width: 760px;
    }

    .interface-animation {
        overflow: hidden;
    }

    .interface-animation-head {
        display: grid;
        grid-template-columns: auto 1fr;
    }

    .interface-animation-head small {
        display: none;
    }

    .intelligence-grid {
        grid-template-columns: 1fr;
    }

    .intelligence-panel {
        min-height: 440px;
    }

    .intelligence-chain {
        grid-template-columns: 1fr;
        justify-items: stretch;
        gap: 0;
        text-align: center;
    }

    .intelligence-chain i {
        width: 1px;
        height: 24px;
        justify-self: center;
    }

    .intelligence-chain i::after {
        top: auto;
        right: -3px;
        bottom: 0;
        transform: rotate(135deg);
    }

    .sky-comparison {
        grid-template-columns: 1fr;
    }

    .sky-symbol {
        height: 230px;
    }

    .engine-console {
        grid-template-columns: 1fr;
    }

    .engine-tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        border-right: 0;
        border-bottom: 1px solid var(--ink);
    }

    .engine-tabs button {
        min-height: 58px;
        border-right: 1px solid var(--line);
    }

    .engine-map {
        min-height: 390px;
        border-right: 0;
    }

    .engine-description {
        display: flex;
    }

    .engine-description h3 {
        margin-top: 25px;
    }

    .engine-description > p {
        margin: 20px 0 30px;
    }

    .engine-description dl {
        display: block;
    }

    .engine-sample-grid { grid-template-columns: 1fr; }

    .engine-sample {
        border-right: 0;
        border-bottom: 1px solid var(--ink);
    }

    .engine-sample:last-child { border-bottom: 0; }

    .engine-benchmark-evidence { grid-template-columns: 1fr; }

    .engine-benchmark-evidence > div {
        min-height: 96px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .engine-description dl > div {
        border-right: 0;
    }

    .feature-matrix { grid-template-columns: 1fr; }

    .feature-cell-evaluated { min-height: 0; }

    .feature-cell-evaluated .feature-copy { min-height: 210px; }

    .advantage-section-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .feature-cell {
        min-height: 350px;
    }

    .advantage-grid {
        grid-template-columns: 1fr;
    }

    .advantage-card,
    .advantage-card:nth-child(2) {
        min-height: 270px;
        border-right: 0;
        border-bottom: 1px solid var(--ink);
    }

    .advantage-card h3 {
        margin-top: 50px;
    }

    .download-card {
        box-shadow: 10px 10px 0 rgba(255, 255, 255, .08);
    }

    .requirements-grid {
        grid-template-columns: 1fr;
    }

    .site-footer {
        grid-template-columns: 1fr 70px;
    }

    .footer-brand {
        padding: 25px 22px;
    }

    .footer-meta {
        grid-column: 1 / -1;
        grid-row: 2;
        align-items: flex-start;
        border-top: 1px solid var(--line);
        border-left: 0;
    }

    .back-top {
        grid-column: 2;
        grid-row: 1;
    }
}

@media (max-width: 520px) {
    .brand-copy strong {
        max-width: 220px;
        font-size: 12px;
    }

    .hero h1 {
        font-size: clamp(29px, 8.2vw, 34px);
        line-height: 1.3;
    }

    .button-primary {
        min-height: 72px;
    }

    .capability-rail > div {
        min-height: 110px;
        flex-direction: column;
        gap: 7px;
        text-align: center;
    }

    .workflow-grid {
        grid-template-columns: 1fr;
    }

    .workflow-card {
        min-height: 280px;
    }

    .intelligence-panel {
        min-height: 0;
        padding: 22px 20px 24px;
    }

    .intelligence-panel > svg {
        margin: 34px 0 30px;
    }

    .feature-cell {
        min-height: 0;
        display: grid;
    }

    .feature-cell-evaluated .feature-copy {
        min-height: 0;
        padding: 24px 22px;
    }

    .feature-cell-evaluated .feature-copy h3 { margin-top: 38px; }

    .feature-cell-evaluated .feature-media {
        height: 230px;
        min-height: 230px;
    }

    .agent-evaluation { min-height: 220px; }

    .advantage-section-links { grid-template-columns: 1fr; }

    .engine-benchmark-head { padding: 22px 20px; }

    .engine-sample figcaption { padding: 16px 18px; }

    .feature-cell-split .feature-copy,
    .feature-cell-annual .feature-copy {
        min-height: 220px;
        padding: 24px 22px;
    }

    .feature-cell-split .feature-media {
        min-height: 245px;
        padding: 8px;
        border-top: 1px solid var(--line);
        border-left: 0;
    }

    .sky-card {
        padding: 25px 20px;
    }

    .sky-card h3 {
        font-size: 22px;
    }

    .route-node {
        width: 60px;
        height: 60px;
    }

    .route-input { top: calc(50% - 30px); }
    .route-gpu { top: calc(25% - 30px); }
    .route-acc { top: calc(50% - 30px); }
    .route-cpu { top: calc(75% - 30px); }
    .route-output { top: calc(50% - 30px); width: 70px; }

    .download-product {
        grid-template-columns: 48px 1fr;
        gap: 14px;
        padding: 22px 18px;
    }

    .download-product svg {
        width: 48px;
    }

    .download-product h3 {
        font-size: 16px;
    }

    .download-actions {
        grid-template-columns: 1fr;
    }

    .download-action {
        border-right: 0;
        border-bottom: 1px solid var(--ink);
    }

    .download-action:last-child {
        border-bottom: 0;
    }

    .download-action-manual {
        grid-column: auto;
        border-top: 0;
    }

    .requirements-table > div {
        grid-template-columns: 1fr;
        gap: 7px;
    }

    .footer-brand svg {
        display: none;
    }

    .footer-brand {
        gap: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
    }

    .js .reveal {
        opacity: 1;
        transform: none;
    }

    .site-intro-symbols::before {
        display: none;
    }

    .site-intro-symbols::after,
    .intro-symbol,
    .site-intro-caption,
    .site-intro-enter {
        opacity: 1;
        transform: none;
    }

    .site-intro-enter {
        animation: none;
    }

    .hero-visual {
        transform: none !important;
    }

    .interface-animation-media img[data-workspace-feature-gif] {
        content: url("./workspace-features-real-v2-poster.png");
    }
}

@media print {
    .site-header,
    .site-grid,
    .hero-actions,
    .download-actions,
    .back-top {
        display: none !important;
    }

    .section-shell {
        padding-right: 20px;
        padding-left: 20px;
    }

    .section-coordinate {
        display: none;
    }

    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }
}