:root {
    --bg: #090b0d;
    --bg-deep: #050607;
    --surface-inset: #13171b;
    --surface: #20252a;
    --surface-high: #2b3239;
    --stroke: #69747e;
    --stroke-soft: rgba(120, 136, 149, .24);
    --text: #f2f4f5;
    --text-secondary: #a8b1b8;
    --text-tertiary: #78838c;
    --amber: #f0b83f;
    --amber-ink: #111416;
    --cyan: #70f0ff;
    --cyan-strong: #20d8ef;
    --mint: #54e6a4;
    --danger: #e8495f;
    --page: min(1280px, calc(100vw - 64px));
    --font-sans: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --cut: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
    background: var(--bg);
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.menu-open { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }

::selection {
    background: var(--amber);
    color: var(--amber-ink);
}

:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    z-index: 1000;
    top: 12px;
    left: 12px;
    padding: 10px 16px;
    background: var(--amber);
    color: var(--amber-ink);
    font-weight: 800;
    transform: translateY(-160%);
    transition: transform .2s ease;
}

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

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

.page-shell {
    width: var(--page);
    margin-inline: auto;
}

.site-atmosphere {
    position: fixed;
    z-index: -2;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.site-atmosphere::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 14%, rgba(32, 216, 239, .09), transparent 26%),
        radial-gradient(circle at 88% 23%, rgba(240, 184, 63, .07), transparent 24%),
        linear-gradient(180deg, rgba(5, 6, 7, .06), var(--bg) 38%);
}

.atmosphere-grid {
    position: absolute;
    inset: 0;
    opacity: .2;
    background-image:
        linear-gradient(rgba(112, 240, 255, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(112, 240, 255, .055) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

.atmosphere-glow {
    position: absolute;
    width: 38vw;
    aspect-ratio: 1;
    border-radius: 50%;
    filter: blur(120px);
    opacity: .06;
}

.atmosphere-glow-cyan { top: 12%; right: -16%; background: var(--cyan-strong); }
.atmosphere-glow-amber { top: 52%; left: -20%; background: var(--amber); }

.site-header {
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    right: 0;
    border-bottom: 1px solid transparent;
    transition: background .3s ease, border-color .3s ease, transform .3s ease;
}

.site-header.is-scrolled {
    background: rgba(9, 11, 13, .86);
    border-color: var(--stroke-soft);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
}

.header-inner {
    width: min(1440px, calc(100vw - 48px));
    height: 84px;
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.brand img {
    border-radius: 10px;
    box-shadow: 0 0 0 1px rgba(255,255,255,.14), 0 8px 28px rgba(0,0,0,.35);
}

.brand-copy { display: grid; line-height: 1; gap: 5px; }
.brand-copy strong { font-size: 17px; letter-spacing: .08em; }
.brand-copy small {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: .22em;
    color: var(--text-tertiary);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: clamp(22px, 2.4vw, 40px);
}

.site-nav a {
    position: relative;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 650;
    letter-spacing: .04em;
    transition: color .2s ease;
}

.site-nav a:not(.nav-cta)::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -8px;
    height: 1px;
    background: var(--cyan);
    transition: right .25s ease;
}

.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { right: 0; }

.site-nav .nav-cta {
    padding: 10px 18px;
    border: 1px solid rgba(240,184,63,.55);
    color: var(--amber);
    clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}

.site-nav .nav-cta:hover { color: var(--amber-ink); background: var(--amber); }
.menu-toggle { display: none; }

.hero {
    position: relative;
    padding-top: 84px;
    min-height: 930px;
}

.hero::before {
    content: "";
    position: absolute;
    width: 55vw;
    height: 1px;
    right: -6vw;
    top: 23%;
    background: linear-gradient(90deg, transparent, rgba(112,240,255,.36), transparent);
    transform: rotate(-22deg);
    transform-origin: center;
}

.hero-grid {
    min-height: 790px;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(430px, .72fr);
    gap: clamp(42px, 7vw, 118px);
    align-items: center;
    padding-block: 54px 58px;
}

.hero-copy { position: relative; z-index: 2; }

.eyebrow, .section-index {
    margin: 0;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 27px;
}

.eyebrow span {
    width: 34px;
    height: 3px;
    background: var(--cyan-strong);
    box-shadow: 0 0 18px rgba(32,216,239,.55);
}

.hero h1 {
    margin: 0;
    max-width: 820px;
    font-size: clamp(76px, 9vw, 142px);
    font-weight: 900;
    line-height: .85;
    letter-spacing: -.075em;
}

.hero h1 span {
    color: transparent;
    -webkit-text-stroke: 1.5px rgba(242,244,245,.9);
    text-stroke: 1.5px rgba(242,244,245,.9);
}

.hero-lead {
    max-width: 630px;
    margin: 36px 0 0;
    color: var(--text-secondary);
    font-size: clamp(17px, 1.4vw, 20px);
    line-height: 1.85;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}

.button {
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 36px;
    padding: 0 24px;
    border: 1px solid var(--stroke-soft);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .03em;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
    transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--amber); color: var(--amber-ink); border-color: var(--amber); }
.button-primary:hover { background: #ffca59; }
.button-secondary { background: rgba(32,37,42,.55); color: var(--text); }
.button-secondary:hover { border-color: var(--stroke); background: var(--surface); }

.hero-metrics {
    display: flex;
    gap: 0;
    margin: 52px 0 0;
}

.hero-metrics div {
    min-width: 128px;
    padding-right: 32px;
    margin-right: 32px;
    border-right: 1px solid var(--stroke-soft);
}

.hero-metrics div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.hero-metrics dt { font-family: var(--font-mono); font-size: 28px; font-weight: 700; line-height: 1; color: var(--cyan); }
.hero-metrics dd { margin: 8px 0 0; color: var(--text-tertiary); font-size: 12px; letter-spacing: .1em; }

.hero-visual {
    position: relative;
    align-self: center;
    justify-self: end;
    width: min(100%, 490px);
    perspective: 1500px;
}

.hero-visual::before {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 12% -10%;
    background: radial-gradient(circle, rgba(32,216,239,.22), transparent 66%);
    filter: blur(28px);
}

.terminal-frame {
    position: relative;
    padding: 11px;
    background: linear-gradient(145deg, rgba(105,116,126,.62), rgba(19,23,27,.5) 24%, rgba(120,136,149,.3));
    clip-path: var(--cut);
    transform: rotateY(-7deg) rotateX(2deg);
    box-shadow: 0 50px 80px rgba(0,0,0,.46);
}

.terminal-frame::before {
    content: "";
    position: absolute;
    inset: 1px;
    z-index: -1;
    background: var(--surface-inset);
    clip-path: var(--cut);
}

.terminal-topbar, .terminal-footer {
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 13px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: .12em;
}

.signal { display: flex; align-items: center; gap: 7px; color: var(--mint); }
.signal i, .access-status i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 10px rgba(84,230,164,.8);
}

.terminal-screen {
    position: relative;
    height: min(620px, 66vh);
    min-height: 520px;
    overflow: hidden;
    background: #030405;
    border: 1px solid rgba(112,240,255,.25);
}

.terminal-screen img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.terminal-screen::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(112,240,255,.05), transparent 12%, transparent 88%, rgba(240,184,63,.05));
    pointer-events: none;
}

.scanline {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: rgba(112,240,255,.65);
    box-shadow: 0 0 18px rgba(112,240,255,.65);
    animation: scan 5.5s linear infinite;
}

@keyframes scan { to { transform: translateY(620px); } }

.visual-chip {
    position: absolute;
    min-width: 126px;
    padding: 12px 14px;
    display: grid;
    gap: 3px;
    background: rgba(9,11,13,.92);
    border: 1px solid var(--stroke-soft);
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
    box-shadow: 0 16px 38px rgba(0,0,0,.35);
}

.visual-chip span { color: var(--text-tertiary); font-family: var(--font-mono); font-size: 9px; letter-spacing: .14em; }
.visual-chip strong { font-family: var(--font-mono); font-size: 15px; }
.visual-chip-route { left: -54px; top: 23%; }
.visual-chip-route strong { color: var(--cyan); }
.visual-chip-status { right: -36px; bottom: 13%; }
.visual-chip-status strong { color: var(--mint); }

.intel-strip {
    overflow: hidden;
    border-block: 1px solid var(--stroke-soft);
    background: rgba(19,23,27,.68);
}

.intel-track {
    min-width: max-content;
    height: 66px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(26px, 3vw, 54px);
    margin-inline: auto;
    padding-inline: 32px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .13em;
}

.intel-track i { width: 4px; height: 4px; background: var(--amber); transform: rotate(45deg); }

.section { position: relative; padding-block: 140px; }
.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, .72fr);
    align-items: end;
    gap: 72px;
    padding-bottom: 64px;
}

.section h2 {
    margin: 20px 0 0;
    font-size: clamp(44px, 5.3vw, 76px);
    font-weight: 850;
    line-height: 1.08;
    letter-spacing: -.055em;
}

.section h2 span { color: var(--text-tertiary); }
.section-heading > p:last-child, .campaign-heading > p:last-child {
    margin: 0;
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.9;
}

.section-systems { background: linear-gradient(180deg, rgba(19,23,27,.28), transparent); }

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

.system-card {
    position: relative;
    min-height: 560px;
    padding: 30px;
    overflow: hidden;
    background: linear-gradient(145deg, rgba(32,37,42,.9), rgba(13,16,19,.96));
    border: 1px solid var(--stroke-soft);
    clip-path: var(--cut);
    transition: transform .28s ease, border-color .28s ease;
}

.system-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(255,255,255,.035), transparent 32%);
    pointer-events: none;
}

.system-card:hover { transform: translateY(-8px); border-color: rgba(112,240,255,.42); }
.system-card-featured { border-color: rgba(240,184,63,.38); }
.system-card-featured:hover { border-color: rgba(240,184,63,.68); }
.card-number { position: absolute; top: 26px; right: 28px; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 11px; }

.system-diagram {
    position: relative;
    height: 205px;
    margin: 28px 0 34px;
    overflow: hidden;
    background:
        linear-gradient(rgba(112,240,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(112,240,255,.05) 1px, transparent 1px);
    background-size: 28px 28px;
    border: 1px solid rgba(112,240,255,.09);
}

.route-diagram span { position: absolute; height: 2px; background: var(--cyan-strong); box-shadow: 0 0 12px rgba(32,216,239,.65); }
.route-diagram span:nth-child(1) { width: 35%; left: 7%; top: 72%; }
.route-diagram span:nth-child(2) { width: 31%; left: 32%; top: 53%; transform: rotate(-42deg); }
.route-diagram span:nth-child(3) { width: 31%; left: 53%; top: 40%; transform: rotate(31deg); }
.route-diagram span:nth-child(4) { width: 30%; right: 6%; top: 26%; }
.route-diagram i {
    position: absolute;
    width: 18px;
    height: 18px;
    right: 8%;
    top: calc(26% - 8px);
    border: 3px solid var(--amber);
    transform: rotate(45deg);
    box-shadow: 0 0 18px rgba(240,184,63,.45);
}

.blueprint-diagram { display: grid; place-items: center; }
.blueprint-core { width: 64px; height: 64px; border: 2px solid var(--amber); transform: rotate(45deg); box-shadow: inset 0 0 28px rgba(240,184,63,.14), 0 0 22px rgba(240,184,63,.18); }
.blueprint-ring { position: absolute; border: 1px solid rgba(240,184,63,.34); border-radius: 50%; }
.ring-one { width: 118px; height: 118px; }
.ring-two { width: 168px; height: 168px; border-style: dashed; animation: spin 24s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.blueprint-node { position: absolute; width: 8px; height: 8px; background: var(--amber); box-shadow: 0 0 12px rgba(240,184,63,.7); }
.node-one { left: calc(50% - 4px); top: 17px; }
.node-two { left: calc(50% - 83px); top: calc(50% - 4px); }
.node-three { right: calc(50% - 83px); top: calc(50% - 4px); }

.protocol-diagram { display: flex; align-items: center; justify-content: center; gap: 15px; }
.protocol-diagram span {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border: 1px solid var(--cyan-strong);
    color: var(--cyan);
    font-family: var(--font-mono);
    font-weight: 800;
    transform: rotate(45deg);
}
.protocol-diagram span:nth-of-type(2) { border-color: var(--amber); color: var(--amber); }
.protocol-diagram span:nth-of-type(3) { border-color: var(--mint); color: var(--mint); }
.protocol-diagram span::first-letter { transform: rotate(-45deg); }
.protocol-diagram i { width: 24px; height: 1px; background: var(--stroke); }

.system-label { margin: 0 0 10px; color: var(--cyan); font-family: var(--font-mono); font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.system-card-featured .system-label { color: var(--amber); }
.system-card h3 { margin: 0; font-size: 27px; letter-spacing: -.03em; }
.system-card > p:not(.system-label) { min-height: 82px; margin: 17px 0 25px; color: var(--text-secondary); font-size: 14px; line-height: 1.85; }
.system-card ul, .act-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.system-card li, .act-card li { padding: 5px 9px; border: 1px solid var(--stroke-soft); color: var(--text-tertiary); font-size: 10px; letter-spacing: .08em; }

.section-showcase {
    padding-bottom: 150px;
    overflow: hidden;
    background: linear-gradient(180deg, transparent, rgba(19,23,27,.4) 50%, transparent);
}

.showcase-header { display: flex; align-items: end; justify-content: space-between; margin-bottom: 56px; }
.scroll-hint { display: flex; align-items: center; gap: 16px; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; }
.scroll-hint i { color: var(--cyan); font-size: 24px; font-style: normal; }

.poster-rail {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(290px, 355px);
    gap: 18px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-color: var(--amber) rgba(255,255,255,.06);
    scrollbar-width: thin;
    padding: 0 max(32px, calc((100vw - 1280px) / 2)) 34px;
}

.poster-card {
    position: relative;
    margin: 0;
    overflow: hidden;
    scroll-snap-align: start;
    background: var(--surface-inset);
    border: 1px solid var(--stroke-soft);
    clip-path: var(--cut);
}

.poster-card img { width: 100%; aspect-ratio: 1320 / 2868; object-fit: cover; transition: transform .5s ease, filter .5s ease; }
.poster-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 52%, rgba(5,6,7,.24)); pointer-events: none; }
.poster-card:hover img { transform: scale(1.018); filter: brightness(1.08); }
.poster-card figcaption { position: relative; z-index: 2; min-height: 120px; display: grid; grid-template-columns: 32px 1fr; align-content: center; column-gap: 12px; padding: 20px 22px; border-top: 1px solid var(--stroke-soft); }
.poster-card figcaption span { grid-row: 1 / span 2; color: var(--amber); font-family: var(--font-mono); font-size: 11px; }
.poster-card figcaption strong { font-size: 18px; }
.poster-card figcaption small { margin-top: 5px; color: var(--text-tertiary); font-size: 11px; letter-spacing: .03em; }

.section-protocols { border-block: 1px solid var(--stroke-soft); background: rgba(13,16,19,.82); }
.protocol-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(520px, 1.1fr); gap: clamp(70px, 9vw, 140px); align-items: center; }
.protocol-copy { position: sticky; top: 130px; align-self: start; }
.protocol-lead { max-width: 540px; margin: 30px 0 0; color: var(--text-secondary); font-size: 17px; line-height: 1.9; }
.protocol-formula { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-top: 36px; font-family: var(--font-mono); font-size: 11px; }
.protocol-formula span { padding: 8px 11px; border: 1px solid var(--stroke-soft); }
.protocol-formula span:nth-of-type(1) { color: var(--cyan); }
.protocol-formula span:nth-of-type(2) { color: var(--amber); }
.protocol-formula span:nth-of-type(3) { color: var(--mint); }
.protocol-formula i { color: var(--text-tertiary); font-style: normal; }
.protocol-formula b { margin-left: 4px; color: var(--text); }

.chip-stack { display: grid; gap: 15px; }
.chip-card {
    position: relative;
    min-height: 176px;
    display: grid;
    grid-template-columns: 98px 1fr;
    align-items: center;
    gap: 20px;
    padding: 26px 56px 26px 26px;
    overflow: hidden;
    background: linear-gradient(105deg, rgba(32,37,42,.96), rgba(19,23,27,.86));
    border: 1px solid var(--stroke-soft);
    clip-path: var(--cut);
    transition: transform .25s ease, border-color .25s ease;
}

.chip-card::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 3px; background: currentColor; box-shadow: 0 0 22px currentColor; }
.chip-card:hover { transform: translateX(-8px); }
.chip-card img { width: 82px; height: 82px; border-radius: 12px; box-shadow: 0 14px 34px rgba(0,0,0,.28); }
.chip-card small { color: currentColor; font-family: var(--font-mono); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.chip-card h3 { margin: 5px 0 7px; color: var(--text); font-size: 21px; }
.chip-card p { margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.65; }
.chip-card-logic { color: var(--cyan); }
.chip-card-modifier { color: var(--amber); }
.chip-card-memory { color: var(--mint); }
.chip-card-logic:hover { border-color: rgba(112,240,255,.45); }
.chip-card-modifier:hover { border-color: rgba(240,184,63,.45); }
.chip-card-memory:hover { border-color: rgba(84,230,164,.45); }
.chip-code { position: absolute; top: 16px; right: 18px; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 9px; }

.section-campaign { overflow: hidden; }
.section-campaign::before { content: "30"; position: absolute; right: -2vw; top: 90px; color: rgba(255,255,255,.018); font-family: var(--font-mono); font-size: min(38vw, 550px); font-weight: 900; line-height: 1; pointer-events: none; }
.campaign-heading { max-width: 900px; }
.campaign-heading > p:last-child { max-width: 650px; margin-top: 28px; }
.act-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 70px; }
.act-card {
    position: relative;
    min-height: 440px;
    padding: 28px;
    overflow: hidden;
    background: linear-gradient(160deg, rgba(32,37,42,.72), rgba(9,11,13,.94));
    border: 1px solid var(--stroke-soft);
    clip-path: var(--cut);
}
.act-card::before { content: ""; position: absolute; inset: 0; opacity: .09; background: radial-gradient(circle at 50% 38%, currentColor, transparent 42%); }
.act-one { color: var(--cyan); }
.act-two { color: var(--mint); }
.act-three { color: var(--amber); }
.act-top { position: relative; z-index: 2; display: flex; justify-content: space-between; color: currentColor; font-family: var(--font-mono); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.act-top small { color: var(--text-tertiary); font-size: 10px; }
.act-orbit { position: relative; width: 148px; height: 148px; margin: 38px auto 28px; border: 1px solid currentColor; border-radius: 50%; opacity: .72; }
.act-orbit::before, .act-orbit::after { content: ""; position: absolute; border: 1px solid currentColor; border-radius: 50%; opacity: .45; }
.act-orbit::before { inset: 16px; }
.act-orbit::after { inset: 42px; background: currentColor; opacity: .11; box-shadow: 0 0 36px currentColor; }
.act-orbit i { position: absolute; top: -5px; left: calc(50% - 5px); width: 10px; height: 10px; border-radius: 50%; background: currentColor; box-shadow: 0 0 14px currentColor; }
.act-two .act-orbit { border-radius: 42% 58% 54% 46%; transform: rotate(-12deg); }
.act-three .act-orbit::after { border-radius: 16px; transform: rotate(45deg); }
.act-card h3 { position: relative; z-index: 2; margin: 0; color: var(--text); font-size: 25px; }
.act-card p { position: relative; z-index: 2; margin: 13px 0 20px; color: var(--text-secondary); font-size: 13px; line-height: 1.75; }
.act-card ul { position: relative; z-index: 2; }
.campaign-progress { display: flex; align-items: center; gap: 13px; margin-top: 46px; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 10px; }
.campaign-progress div { flex: 1; height: 1px; display: flex; justify-content: space-around; background: var(--stroke-soft); }
.campaign-progress i { width: 5px; height: 5px; margin-top: -2px; background: var(--stroke); transform: rotate(45deg); }

.section-access { padding-top: 30px; }
.access-panel {
    position: relative;
    min-height: 510px;
    display: grid;
    grid-template-columns: 210px 1fr;
    grid-template-rows: 1fr auto;
    gap: 40px 70px;
    align-items: center;
    padding: clamp(38px, 6vw, 78px);
    overflow: hidden;
    background: linear-gradient(120deg, rgba(32,37,42,.98), rgba(13,16,19,.98));
    border: 1px solid rgba(240,184,63,.42);
    clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}
.access-panel::after { content: ""; position: absolute; width: 48%; aspect-ratio: 1; top: -50%; right: -10%; border: 1px solid rgba(240,184,63,.2); border-radius: 50%; box-shadow: 0 0 0 70px rgba(240,184,63,.018), 0 0 0 140px rgba(240,184,63,.012); }
.access-signal { width: 190px; height: 190px; display: grid; place-items: center; align-content: center; border: 1px solid rgba(240,184,63,.48); border-radius: 50%; box-shadow: inset 0 0 45px rgba(240,184,63,.07), 0 0 40px rgba(240,184,63,.06); }
.access-signal span { color: var(--amber); font-family: var(--font-mono); font-size: 82px; font-weight: 800; line-height: 1; }
.access-signal i { color: var(--text-tertiary); font-family: var(--font-mono); font-size: 8px; font-style: normal; letter-spacing: .12em; }
.access-copy { position: relative; z-index: 2; max-width: 770px; }
.access-copy h2 { font-size: clamp(39px, 4.6vw, 64px); }
.access-copy > p:last-child { max-width: 680px; margin: 24px 0 0; color: var(--text-secondary); font-size: 16px; line-height: 1.85; }
.access-points { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--stroke-soft); border: 1px solid var(--stroke-soft); }
.access-points div { display: grid; gap: 5px; padding: 20px 24px; background: var(--surface-inset); }
.access-points strong { font-size: 15px; }
.access-points span { color: var(--text-tertiary); font-size: 11px; letter-spacing: .06em; }
.access-status { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; }
.access-status > span { display: flex; align-items: center; gap: 9px; }
.access-status b { color: var(--amber); font-size: 10px; }

.section-about { padding-top: 80px; }
.about-grid { display: grid; grid-template-columns: .58fr 1.42fr; gap: 90px; align-items: start; padding-block: 70px; border-block: 1px solid var(--stroke-soft); }
.about-brand { display: flex; align-items: center; gap: 22px; }
.about-brand img { border-radius: 20px; filter: drop-shadow(0 18px 38px rgba(0,0,0,.34)); }
.about-brand > div { display: grid; gap: 3px; }
.about-brand small { color: var(--amber); font-family: var(--font-mono); font-size: 9px; letter-spacing: .16em; }
.about-brand strong { font-size: 22px; letter-spacing: .06em; }
.about-brand span { color: var(--text-tertiary); font-size: 11px; }
.about-story h2 { font-size: clamp(38px, 4vw, 58px); }
.about-story > p:not(.section-index) { max-width: 690px; margin: 24px 0 0; color: var(--text-secondary); font-size: 16px; line-height: 1.9; }
.principle-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 45px; border-block: 1px solid var(--stroke-soft); }
.principle-row div { display: grid; gap: 4px; padding: 22px; border-right: 1px solid var(--stroke-soft); }
.principle-row div:last-child { border-right: 0; }
.principle-row span { color: var(--amber); font-family: var(--font-mono); font-size: 9px; }
.principle-row strong { font-size: 14px; }
.principle-row small { color: var(--text-tertiary); font-size: 10px; }

.section-faq { padding-top: 40px; }
.faq-grid { display: grid; grid-template-columns: .55fr 1.45fr; gap: 90px; }
.section-faq h2 { font-size: clamp(42px, 4.7vw, 66px); }
.faq-list { border-top: 1px solid var(--stroke-soft); }
.faq-list details { border-bottom: 1px solid var(--stroke-soft); }
.faq-list summary { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; cursor: pointer; list-style: none; font-size: 16px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--amber); font-family: var(--font-mono); font-size: 22px; font-weight: 400; transition: transform .2s ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 680px; margin: -5px 0 24px; color: var(--text-secondary); font-size: 14px; line-height: 1.85; }

/* Privacy policy */
.privacy-page { background: var(--bg); }
.privacy-main { position: relative; z-index: 1; padding-top: 74px; }
.privacy-hero {
    min-height: 470px;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
    gap: clamp(48px, 8vw, 120px);
    align-items: end;
    padding-block: clamp(90px, 11vw, 150px) 72px;
    border-bottom: 1px solid var(--stroke-soft);
}
.privacy-hero-copy { max-width: 790px; }
.privacy-hero h1 { margin: 12px 0 24px; font-size: clamp(64px, 8vw, 114px); line-height: .9; letter-spacing: -.055em; }
.privacy-hero-copy > p:last-child { max-width: 700px; margin: 0; color: var(--text-secondary); font-size: 17px; line-height: 1.9; }
.privacy-meta { display: grid; gap: 0; margin: 0; border-top: 1px solid var(--stroke-soft); }
.privacy-meta div { display: grid; grid-template-columns: 82px 1fr; gap: 22px; padding: 16px 0; border-bottom: 1px solid var(--stroke-soft); }
.privacy-meta dt { color: var(--text-tertiary); font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.privacy-meta dd { margin: 0; color: var(--text-secondary); font-size: 12px; line-height: 1.55; }

.privacy-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 1px; background: var(--stroke-soft); border: 1px solid var(--stroke-soft); }
.privacy-summary-card { min-height: 190px; display: grid; align-content: start; gap: 12px; padding: 30px; background: linear-gradient(150deg, rgba(26,31,36,.92), rgba(12,15,18,.98)); }
.privacy-summary-card > span { color: var(--amber); font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; }
.privacy-summary-card strong { font-size: 18px; }
.privacy-summary-card p { max-width: 320px; margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.75; }

.privacy-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: clamp(54px, 8vw, 120px); align-items: start; padding-block: clamp(84px, 10vw, 140px); }
.privacy-toc { position: sticky; top: 112px; padding: 24px; background: rgba(19,23,27,.62); border: 1px solid var(--stroke-soft); }
.privacy-toc > p { margin: 0 0 18px; color: var(--amber); font-family: var(--font-mono); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.privacy-toc nav { display: grid; }
.privacy-toc a { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 10px 0; color: var(--text-secondary); border-top: 1px solid var(--stroke-soft); font-size: 12px; line-height: 1.5; transition: color .2s ease, padding-left .2s ease; }
.privacy-toc a:hover, .privacy-toc a:focus-visible { padding-left: 4px; color: var(--text); }
.privacy-toc a span { color: var(--text-tertiary); font-family: var(--font-mono); font-size: 9px; }

.privacy-article { max-width: 820px; }
.privacy-article section { scroll-margin-top: 110px; padding: 0 0 76px; margin: 0 0 76px; border-bottom: 1px solid var(--stroke-soft); }
.privacy-article section:last-child { margin-bottom: 0; }
.privacy-section-index { margin: 0 0 14px; color: var(--amber); font-family: var(--font-mono); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.privacy-article h2 { margin: 0 0 24px; font-size: clamp(32px, 4vw, 50px); line-height: 1.08; }
.privacy-article p, .privacy-article li { color: var(--text-secondary); font-size: 15px; line-height: 1.95; }
.privacy-article p { margin: 0 0 18px; }
.privacy-article ul { display: grid; gap: 10px; margin: 22px 0; padding: 0; list-style: none; }
.privacy-article li { position: relative; padding-left: 22px; }
.privacy-article li::before { content: ""; position: absolute; top: .84em; left: 1px; width: 6px; height: 6px; border: 1px solid var(--amber); transform: rotate(45deg); }
.privacy-article strong { color: var(--text); }
.privacy-article a { color: var(--amber); text-decoration: underline; text-decoration-color: rgba(240,184,63,.38); text-underline-offset: 4px; }
.privacy-note { margin-top: 30px; padding: 24px 26px; background: rgba(240,184,63,.045); border: 1px solid rgba(240,184,63,.28); }
.privacy-note > strong { display: block; margin-bottom: 8px; color: var(--amber); font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; }
.privacy-note p { margin: 0; font-size: 13px; }
.privacy-footer { margin-top: 0; }

.site-footer { padding: 38px 0; border-top: 1px solid var(--stroke-soft); background: var(--bg-deep); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 30px; }
.footer-grid > p { margin: 0; color: var(--text-tertiary); font-size: 12px; text-align: center; }
.footer-meta { display: flex; justify-content: flex-end; gap: 24px; color: var(--text-tertiary); font-family: var(--font-mono); font-size: 9px; letter-spacing: .08em; }
.footer-meta a { color: var(--text-secondary); }

html.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
html.js .reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1120px) {
    :root { --page: min(100% - 48px, 1040px); }
    .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(380px, .7fr); gap: 44px; }
    .hero h1 { font-size: clamp(70px, 9vw, 106px); }
    .terminal-screen { min-height: 480px; }
    .visual-chip-route { left: -24px; }
    .visual-chip-status { right: -12px; }
    .system-card { min-height: 575px; padding: 24px; }
    .system-diagram { height: 180px; }
    .protocol-layout { grid-template-columns: .72fr 1fr; gap: 50px; }
    .about-grid, .faq-grid { gap: 55px; }
}

@media (max-width: 900px) {
    :root { --page: min(100% - 40px, 760px); }
    .site-nav {
        position: fixed;
        inset: 73px 0 auto;
        height: calc(100dvh - 73px);
        padding: 48px 24px;
        display: grid;
        align-content: start;
        gap: 0;
        background: rgba(9,11,13,.98);
        border-top: 1px solid var(--stroke-soft);
        transform: translateX(100%);
        transition: transform .3s cubic-bezier(.2,.7,.2,1);
    }
    .site-nav.is-open { transform: translateX(0); }
    .site-nav a { width: min(100%, 620px); margin-inline: auto; padding: 19px 4px; border-bottom: 1px solid var(--stroke-soft); font-size: 18px; }
    .site-nav .nav-cta { margin-top: 24px; padding: 15px 20px; text-align: center; border: 1px solid rgba(240,184,63,.55); }
    .menu-toggle { width: 46px; height: 46px; display: grid; place-content: center; gap: 7px; padding: 0; border: 1px solid var(--stroke-soft); background: rgba(19,23,27,.7); cursor: pointer; }
    .menu-toggle > span:not(.sr-only) { width: 20px; height: 1px; background: var(--text); transition: transform .25s ease; }
    .menu-toggle[aria-expanded="true"] > span:nth-of-type(2) { transform: translateY(4px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] > span:nth-of-type(3) { transform: translateY(-4px) rotate(-45deg); }
    .header-inner { width: calc(100vw - 32px); height: 74px; }
    .hero { padding-top: 74px; }
    .hero-grid { grid-template-columns: 1fr; padding-top: 84px; }
    .hero-copy { max-width: 720px; }
    .hero-visual { width: min(100%, 520px); justify-self: center; margin-top: 30px; }
    .terminal-screen { height: 640px; }
    .section { padding-block: 105px; }
    .section-heading { grid-template-columns: 1fr; gap: 30px; }
    .system-grid { grid-template-columns: 1fr; }
    .system-card { min-height: auto; }
    .system-diagram { height: 230px; }
    .protocol-layout { grid-template-columns: 1fr; }
    .protocol-copy { position: static; }
    .act-grid { grid-template-columns: 1fr; }
    .act-card { min-height: 390px; }
    .access-panel { grid-template-columns: 150px 1fr; gap: 36px; }
    .access-signal { width: 150px; height: 150px; }
    .access-signal span { font-size: 64px; }
    .about-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; gap: 42px; }
    .privacy-hero { grid-template-columns: 1fr; align-items: start; }
    .privacy-meta { max-width: 560px; }
    .privacy-summary { grid-template-columns: 1fr; }
    .privacy-summary-card { min-height: 0; }
    .privacy-layout { grid-template-columns: 1fr; gap: 66px; }
    .privacy-toc { position: static; }
    .privacy-toc nav { grid-template-columns: repeat(2, 1fr); column-gap: 30px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid > p { display: none; }
}

@media (max-width: 640px) {
    :root { --page: calc(100% - 32px); }
    .brand-copy strong { font-size: 15px; }
    .hero-grid { min-height: auto; padding-block: 70px 48px; }
    .eyebrow { font-size: 9px; letter-spacing: .1em; }
    .hero h1 { font-size: clamp(62px, 20vw, 94px); line-height: .89; }
    .hero-lead { font-size: 16px; line-height: 1.8; }
    .hero-actions { display: grid; }
    .button { width: 100%; justify-content: space-between; }
    .hero-metrics { justify-content: space-between; }
    .hero-metrics div { min-width: 0; margin-right: 16px; padding-right: 16px; }
    .hero-metrics dt { font-size: 24px; }
    .hero-visual { width: calc(100% - 12px); }
    .terminal-frame { transform: none; }
    .terminal-screen { height: 560px; min-height: 0; }
    .visual-chip { min-width: 108px; padding: 9px 10px; }
    .visual-chip-route { left: -10px; top: 25%; }
    .visual-chip-status { right: -9px; }
    .intel-track { justify-content: flex-start; animation: marquee 22s linear infinite; }
    @keyframes marquee { to { transform: translateX(-42%); } }
    .section { padding-block: 86px; }
    .section h2 { font-size: clamp(38px, 12vw, 56px); }
    .section-heading { padding-bottom: 46px; }
    .section-heading > p:last-child, .campaign-heading > p:last-child { font-size: 15px; }
    .system-card { padding: 20px; }
    .system-diagram { height: 190px; margin-top: 36px; }
    .system-card > p:not(.system-label) { min-height: 0; }
    .showcase-header { margin-bottom: 36px; }
    .scroll-hint { display: none; }
    .poster-rail { grid-auto-columns: minmax(272px, 82vw); padding-inline: 16px; }
    .protocol-lead { font-size: 15px; }
    .protocol-formula b { width: 100%; margin-top: 4px; }
    .chip-card { min-height: 0; grid-template-columns: 64px 1fr; gap: 16px; padding: 20px 30px 20px 20px; }
    .chip-card img { width: 60px; height: 60px; border-radius: 9px; }
    .chip-card h3 { font-size: 18px; }
    .chip-card p { font-size: 12px; }
    .act-grid { margin-top: 48px; }
    .act-card { min-height: 410px; padding: 22px; }
    .campaign-progress { gap: 7px; }
    .section-access { padding-top: 12px; }
    .access-panel { min-height: 0; grid-template-columns: 1fr; padding: 30px 22px; gap: 32px; }
    .access-signal { width: 126px; height: 126px; justify-self: start; }
    .access-signal span { font-size: 54px; }
    .access-points { grid-template-columns: 1fr; }
    .access-status { align-items: flex-start; gap: 18px; flex-direction: column; }
    .about-grid { padding-block: 48px; }
    .about-brand img { width: 82px; height: 82px; }
    .principle-row { grid-template-columns: 1fr; }
    .principle-row div { border-right: 0; border-bottom: 1px solid var(--stroke-soft); }
    .principle-row div:last-child { border-bottom: 0; }
    .faq-list summary { min-height: 68px; font-size: 15px; }
    .privacy-main { padding-top: 74px; }
    .privacy-hero { min-height: 0; padding-block: 72px 52px; gap: 44px; }
    .privacy-hero h1 { margin-top: 10px; font-size: clamp(58px, 18vw, 82px); }
    .privacy-hero-copy > p:last-child { font-size: 15px; }
    .privacy-meta div { grid-template-columns: 74px 1fr; }
    .privacy-summary-card { padding: 24px; }
    .privacy-layout { padding-block: 72px; gap: 54px; }
    .privacy-toc { padding: 20px; }
    .privacy-toc nav { grid-template-columns: 1fr; }
    .privacy-article section { padding-bottom: 54px; margin-bottom: 54px; }
    .privacy-article p, .privacy-article li { font-size: 14px; line-height: 1.85; }
    .privacy-note { padding: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 25px; }
    .footer-meta { justify-content: space-between; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    html.js .reveal { opacity: 1; transform: none; }
}