:root {
  --ink: #080d0d;
  --ink-2: #0d1514;
  --ink-3: #14201e;
  --ivory: #f2eee4;
  --ivory-2: #faf7ef;
  --mist: #dbe5df;
  --teal: #7faea5;
  --green: #a9c79c;
  --gold: #b4965d;
  --muted: #98a29e;
  --muted-dark: #5c6662;
  --line: rgba(8,13,13,.16);
  --line-light: rgba(242,238,228,.17);
  --content: 1320px;
  --header: 78px;
  --radius: 24px;
  --ease: cubic-bezier(.2,.8,.2,1);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header) + 18px); }
body { margin: 0; overflow-x: hidden; background: var(--ink); color: var(--ink); font-family: Arial, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
::selection { background: var(--green); color: var(--ink); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

.skip-link { position: fixed; z-index: 999; top: 10px; left: 10px; padding: 10px 16px; border-radius: 999px; background: var(--ivory); color: var(--ink); font-weight: 800; transform: translateY(-160%); transition: transform .2s ease; }
.skip-link:focus { transform: translateY(0); }
.shell { width: min(calc(100% - 48px), var(--content)); margin-inline: auto; }
.section { padding: clamp(110px, 11vw, 180px) 0; }
.section-code { display: flex; align-items: center; gap: 12px; margin: 0 0 30px; color: var(--muted-dark); font-size: .7rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.section-code::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.section-code--light { color: #9aa6a2; }
.section-heading { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(290px,.45fr); gap: 70px; align-items: end; margin-bottom: 78px; }
.section-heading .section-code { grid-column: 1 / -1; margin-bottom: -28px; }
.section-heading h2, .problem-layout h2, .questions-intro h2, .infrastructure-head h2, .principles-sticky h2, .contact-intro h2 { margin: 0; font-size: clamp(3.5rem, 7vw, 7.6rem); font-weight: 780; letter-spacing: -.075em; line-height: .9; }
.section-heading > p:last-child, .problem-copy p, .infrastructure-head > p, .principles-sticky > p:last-child, .contact-intro > p:last-child { max-width: 440px; margin: 0; color: var(--muted-dark); font-size: 1.05rem; }
.section-heading--dark { color: var(--ivory); }
.section-heading--dark > p:last-child { color: var(--muted); }
em { font-family: Georgia, "Times New Roman", serif; font-weight: 400; }

/* Navigation */
.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: var(--header); color: var(--ivory); border-bottom: 1px solid transparent; transition: color .25s ease, background .25s ease, border-color .25s ease, backdrop-filter .25s ease; }
.site-header.is-scrolled { color: var(--ink); border-color: var(--line); background: rgba(242,238,228,.91); backdrop-filter: blur(18px); }
.nav-shell { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 12px; font-size: .92rem; font-weight: 850; letter-spacing: -.03em; }
.brand img { width: 34px; height: 34px; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy small { margin-top: 5px; color: var(--muted); font-size: .55rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.site-header.is-scrolled .brand-copy small { color: var(--muted-dark); }
.nav-menu { display: flex; align-items: center; gap: clamp(13px, 1.55vw, 25px); }
.nav-menu a { position: relative; padding: 9px 0; color: inherit; font-size: .72rem; font-weight: 750; }
.nav-menu a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 4px; height: 1px; background: currentColor; transition: right .2s ease; }
.nav-menu a:hover::after, .nav-menu a.is-active::after { right: 0; }
.nav-actions { display: flex; align-items: center; gap: 11px; }
.lang-switch { display: inline-flex; padding: 3px; border: 1px solid currentColor; border-radius: 999px; }
.lang-switch a { padding: 4px 7px; border-radius: 999px; font-size: .62rem; font-weight: 800; }
.lang-switch a[aria-current="page"] { background: var(--ivory); color: var(--ink); }
.site-header.is-scrolled .lang-switch a[aria-current="page"] { background: var(--ink); color: var(--ivory); }
.menu-button { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid currentColor; border-radius: 50%; background: transparent; place-items: center; color: inherit; cursor: pointer; }
.menu-button span, .menu-button::before, .menu-button::after { content: ""; display: block; width: 18px; height: 1px; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.menu-button span { margin: 5px 0; }
.menu-button[aria-expanded="true"] span { opacity: 0; }
.menu-button[aria-expanded="true"]::before { transform: translateY(6px) rotate(45deg); }
.menu-button[aria-expanded="true"]::after { transform: translateY(-6px) rotate(-45deg); }

.button { display: inline-flex; min-height: 54px; align-items: center; justify-content: center; gap: 14px; padding: 0 24px; border: 1px solid var(--ivory); border-radius: 999px; background: var(--ivory); color: var(--ink); font-size: .8rem; font-weight: 800; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button::after { content: "↗"; font-size: 1rem; }
.button:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(0,0,0,.22); }
.button--small { min-height: 40px; padding-inline: 15px; font-size: .67rem; }
.site-header:not(.is-scrolled) .button--small { border-color: var(--ivory); background: transparent; color: var(--ivory); }
.button--accent { border-color: var(--green); background: var(--green); color: var(--ink); }
.button--lime { border-color: var(--green); background: var(--green); color: var(--ink); }
.text-link { display: inline-flex; align-items: center; gap: 18px; padding: 11px 0; border-bottom: 1px solid currentColor; font-size: .78rem; font-weight: 800; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateY(3px); }
.text-link--light { color: var(--ivory); }

/* Hero */
.hero { position: relative; min-height: 940px; padding: clamp(150px, 13vw, 190px) 0 36px; overflow: hidden; background: radial-gradient(circle at 76% 40%, rgba(127,174,165,.12), transparent 29%), radial-gradient(circle at 12% 85%, rgba(180,150,93,.07), transparent 23%), var(--ink); color: var(--ivory); }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(rgba(242,238,228,.026) 1px, transparent 1px), linear-gradient(90deg, rgba(242,238,228,.026) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, black, transparent 82%); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0,1.12fr) minmax(400px,.72fr); gap: clamp(52px, 8vw, 120px); align-items: center; }
.hero-copy h1 { max-width: 960px; margin: 0; font-size: clamp(4.6rem, 8.3vw, 8.9rem); font-weight: 780; letter-spacing: -.085em; line-height: .84; }
.hero-copy h1 em { color: var(--teal); }
.hero-lead { max-width: 740px; margin: 42px 0 0; color: #bcc5c1; font-size: clamp(1.15rem,1.6vw,1.45rem); line-height: 1.45; letter-spacing: -.02em; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; margin-top: 38px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px; margin: 46px 0 0; color: #8f9a96; font-size: .68rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.hero-trust i { color: var(--gold); font-style: normal; }
.signal-stage { position: relative; min-height: 590px; overflow: hidden; border: 1px solid var(--line-light); border-radius: 38px; background: rgba(13,21,20,.82); box-shadow: 0 40px 100px rgba(0,0,0,.25); }
.stage-head { position: absolute; z-index: 3; top: 28px; left: 30px; right: 30px; display: flex; justify-content: space-between; color: #a4aeaa; font-size: .62rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.stage-status { display: flex; align-items: center; gap: 9px; color: var(--green); }
.stage-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 6px rgba(169,199,156,.09); }
.signal-field { position: absolute; inset: 72px 18px 124px; background: radial-gradient(circle at 57% 47%, rgba(127,174,165,.09), transparent 28%), repeating-radial-gradient(circle at 57% 47%, transparent 0 54px, rgba(242,238,228,.045) 55px 56px); }
.signal-field i { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: #68726e; }
.signal-field i:nth-child(1) { top: 12%; left: 14%; }.signal-field i:nth-child(2) { top: 18%; left: 68%; }.signal-field i:nth-child(3) { top: 38%; left: 7%; }.signal-field i:nth-child(4) { top: 30%; left: 43%; }.signal-field i:nth-child(5) { top: 51%; left: 83%; }.signal-field i:nth-child(6) { top: 63%; left: 22%; }.signal-field i:nth-child(7) { top: 78%; left: 66%; }.signal-field i:nth-child(8) { top: 84%; left: 37%; }.signal-field i:nth-child(9) { top: 28%; left: 89%; }
.weak-path { position: absolute; left: 10%; width: 54%; height: 1px; transform-origin: left; background: linear-gradient(90deg, transparent, rgba(242,238,228,.14), transparent); }
.weak-path--one { top: 30%; transform: rotate(10deg); }.weak-path--two { top: 52%; transform: rotate(-7deg); }.weak-path--three { top: 68%; transform: rotate(-18deg); }
.signal-focus { position: absolute; z-index: 2; top: 46%; left: 56%; width: 16px; height: 16px; border: 1px solid var(--green); border-radius: 50%; background: var(--green); box-shadow: 0 0 0 12px rgba(169,199,156,.08), 0 0 0 30px rgba(169,199,156,.035); animation: breathe 5s ease-in-out infinite; }
.clear-path { position: absolute; z-index: 1; top: calc(46% + 8px); left: calc(56% + 8px); width: 50%; height: 1px; transform: rotate(-23deg); transform-origin: left; background: linear-gradient(90deg, var(--green), var(--teal), transparent); }
.signal-readout { position: absolute; z-index: 3; left: 30px; right: 30px; bottom: 28px; padding-top: 20px; border-top: 1px solid var(--line-light); }
.signal-readout span { display: block; margin-bottom: 7px; color: #7f8a86; font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; }
.signal-readout strong { font-size: 1rem; line-height: 1.4; }
.hero-commercial { position: relative; display: grid; grid-template-columns: 180px 1fr; gap: 30px; align-items: center; margin-top: clamp(70px,9vw,120px); padding-top: 22px; border-top: 1px solid var(--line-light); }
.hero-commercial span { color: #7f8a86; font-size: .62rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.hero-commercial p { margin: 0; font-family: Georgia, serif; font-size: clamp(1.15rem,2vw,1.65rem); font-style: italic; }

/* Challenge */
.problem-section { background: var(--ivory); }
.problem-layout { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(320px,.42fr); gap: 80px; align-items: end; }
.problem-layout h2 { max-width: 900px; }
.problem-copy { padding-bottom: 7px; }
.editorial-contrast { display: grid; grid-template-columns: 1fr 100px 1fr; gap: 34px; align-items: center; margin-top: 100px; padding-top: 34px; border-top: 1px solid var(--line); }
.contrast-side > span { display: block; margin-bottom: 52px; color: var(--muted-dark); font-size: .65rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.contrast-side p { margin: 0; font-size: clamp(1.7rem,3.2vw,3.7rem); font-weight: 700; letter-spacing: -.055em; line-height: 1.08; }
.contrast-side--noise p { color: #7d8581; text-decoration: line-through; text-decoration-thickness: 1px; }
.contrast-side--answer p { color: var(--ink); }
.contrast-axis { display: grid; place-items: center; }
.contrast-axis span { position: relative; width: 70px; height: 1px; background: var(--gold); }
.contrast-axis span::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-top: 1px solid var(--gold); border-right: 1px solid var(--gold); transform: rotate(45deg); }

/* Method */
.method-section { background: var(--ink-2); color: var(--ivory); }
.method-path { position: relative; margin: 0; padding: 0; border-top: 1px solid var(--line-light); list-style: none; }
.method-path::before { content: ""; position: absolute; top: 0; bottom: 0; right: 56px; width: 1px; background: linear-gradient(var(--line-light), var(--teal)); }
.method-path li { position: relative; display: grid; grid-template-columns: 90px minmax(0,1fr) 112px; gap: 26px; min-height: 250px; padding: 40px 0; border-bottom: 1px solid var(--line-light); }
.method-index { color: #77817d; font-size: .65rem; font-weight: 800; letter-spacing: .12em; }
.method-copy { display: grid; grid-template-columns: minmax(120px,.3fr) minmax(300px,.8fr) minmax(250px,.65fr); gap: 36px; align-items: start; }
.method-copy p, .method-copy h3, .method-copy small { margin: 0; }
.method-name { color: var(--teal); font-family: Georgia, serif; font-size: 1.6rem; font-style: italic; }
.method-copy h3 { max-width: 520px; font-size: clamp(1.8rem,3vw,3rem); letter-spacing: -.055em; line-height: 1; }
.method-copy > p:not(.method-name) { max-width: 420px; color: #a7b0ac; }
.method-copy small { grid-column: 3; color: #7f8985; font-size: .65rem; letter-spacing: .05em; }
.method-signal { position: absolute; z-index: 2; top: 43px; right: 50px; width: 13px; height: 13px; border: 1px solid var(--teal); border-radius: 50%; background: var(--ink-2); }
.method-path li:nth-child(2) .method-signal { width: 15px; height: 15px; right: 49px; }
.method-path li:nth-child(3) .method-signal { width: 18px; height: 18px; right: 47px; background: rgba(127,174,165,.3); }
.method-path li:nth-child(4) .method-signal { width: 22px; height: 22px; right: 45px; background: var(--green); box-shadow: 0 0 0 9px rgba(169,199,156,.07); }

/* Products */
.services-section { background: var(--ivory-2); }
.product-list { border-top: 1px solid var(--ink); }
.product { display: grid; grid-template-columns: .35fr 1.05fr .75fr; gap: 46px; min-height: 390px; padding: 42px 0; border-bottom: 1px solid var(--ink); }
.product-meta span { display: block; margin-bottom: 20px; color: var(--gold); font-size: .65rem; font-weight: 800; }
.product-meta p { margin: 0; font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.product-promise h3 { max-width: 650px; margin: 0; font-size: clamp(2.8rem,5vw,5.4rem); letter-spacing: -.075em; line-height: .9; }
.product-promise p { max-width: 520px; margin: 28px 0 0; color: var(--muted-dark); }
.product ul { align-self: end; margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.product li { padding: 10px 0; border-bottom: 1px solid var(--line); color: #434b48; font-size: .78rem; font-weight: 700; }
.product--performance { position: relative; }
.product--performance::before { content: ""; position: absolute; inset: 0 calc(50% - 50vw); z-index: 0; background: var(--mist); }
.product--performance > * { position: relative; z-index: 1; }
.product--infrastructure .product-promise h3 { color: #1d3531; }

/* Result evidence */
.questions-section { background: #102522; color: var(--ivory); }
.questions-layout { display: grid; grid-template-columns: minmax(320px,.67fr) minmax(500px,1fr); gap: clamp(70px,10vw,150px); align-items: start; }
.questions-intro { position: sticky; top: calc(var(--header) + 42px); }
.questions-intro h2 { font-size: clamp(3.6rem,6vw,6.8rem); }
.questions-intro > p:last-child { max-width: 520px; margin: 34px 0 0; color: #9caaa5; }
.question-list { margin: 0; padding: 0; border-top: 1px solid var(--line-light); list-style: none; }
.question-list li { display: grid; grid-template-columns: 52px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line-light); transition: padding-left .25s var(--ease), color .25s ease; }
.question-list li:hover { padding-left: 14px; color: var(--green); }
.question-list span { padding-top: 8px; color: #70807a; font-size: .62rem; font-weight: 800; }
.question-list p { margin: 0; font-size: clamp(1.35rem,2.2vw,2.2rem); letter-spacing: -.04em; line-height: 1.08; }

/* Infrastructure */
.infrastructure-section { position: relative; overflow: hidden; background: var(--ink); color: var(--ivory); }
.infrastructure-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(rgba(242,238,228,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(242,238,228,.025) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(circle at 80% 40%, black, transparent 55%); }
.infrastructure-head { position: relative; display: grid; grid-template-columns: minmax(0,1.1fr) minmax(300px,.45fr); gap: 70px; align-items: end; margin-bottom: 80px; }
.infrastructure-head h2 { max-width: 900px; }
.infrastructure-head h2 em { color: var(--teal); }
.infrastructure-head > p { color: #9ba6a2; }
.infrastructure-rows { position: relative; border-top: 1px solid var(--line-light); }
.infrastructure-rows article { position: relative; display: grid; grid-template-columns: .35fr .8fr .65fr 100px; gap: 36px; min-height: 210px; align-items: center; padding: 34px 0; border-bottom: 1px solid var(--line-light); overflow: hidden; }
.infrastructure-rows article > span { color: var(--teal); font-size: .65rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.infrastructure-rows h3 { margin: 0; font-size: clamp(1.8rem,3vw,3rem); letter-spacing: -.055em; line-height: 1; }
.infrastructure-rows p { margin: 0; color: #9ba6a2; }
.infrastructure-rows i { position: relative; width: 74px; height: 74px; border: 1px solid rgba(127,174,165,.34); border-radius: 50%; }
.infrastructure-rows i::before, .infrastructure-rows i::after { content: ""; position: absolute; inset: 18px; border: 1px solid rgba(127,174,165,.28); border-radius: 50%; }
.infrastructure-rows i::after { inset: 33px; background: var(--green); border: 0; }

/* Traffic modes */
.traffic-section { background: var(--ivory); }
.traffic-modes { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.traffic-modes article { min-height: 420px; padding: 38px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.traffic-modes span { color: var(--muted-dark); font-size: .65rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.traffic-modes h3 { margin: 150px 0 20px; font-size: clamp(2.4rem,4.5vw,4.7rem); letter-spacing: -.07em; line-height: .92; }
.traffic-modes p { max-width: 520px; margin: 0; color: var(--muted-dark); }
.traffic-modes small { display: block; margin-top: 28px; color: #38413e; font-weight: 800; }
.traffic-modes article:last-child { background: var(--mist); }
.traffic-close { max-width: 900px; margin: 46px 0 0 auto; padding-left: 24px; border-left: 2px solid var(--gold); font-family: Georgia, serif; font-size: clamp(1.3rem,2.4vw,2rem); font-style: italic; }

/* Engagement */
.engagement-section { background: #15201e; color: var(--ivory); }
.engagement-phases { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line-light); border-left: 1px solid var(--line-light); }
.engagement-phases article { min-height: 410px; padding: 32px; border-right: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.engagement-phases span { color: var(--gold); font-size: .65rem; font-weight: 800; }
.engagement-phases h3 { margin: 120px 0 28px; font-size: clamp(2.5rem,4vw,4.2rem); letter-spacing: -.06em; }
.engagement-phases ul { margin: 0; padding: 0; list-style: none; }
.engagement-phases li { padding: 8px 0; border-top: 1px solid var(--line-light); color: #b2bcb8; font-size: .82rem; }
.operating-detail { margin-top: 24px; border-block: 1px solid var(--line-light); }
.operating-detail summary { display: flex; min-height: 70px; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; list-style: none; }
.operating-detail summary::-webkit-details-marker { display: none; }
.operating-detail summary span { font-size: 1.2rem; transition: transform .2s ease; }
.operating-detail[open] summary span { transform: rotate(45deg); }
.operating-detail ol { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin: 0 0 30px; padding: 1px; background: var(--line-light); list-style-position: inside; }
.operating-detail li { min-height: 120px; padding: 20px; background: var(--ink-3); color: #b4bdb9; font-size: .78rem; }

/* Principles */
.principles-section { background: var(--ivory-2); }
.principles-layout { display: grid; grid-template-columns: minmax(300px,.65fr) minmax(520px,1fr); gap: clamp(70px,10vw,150px); align-items: start; }
.principles-sticky { position: sticky; top: calc(var(--header) + 42px); }
.principles-sticky h2 { font-size: clamp(3.7rem,6.7vw,7.2rem); }
.principles-sticky h2 em { color: #52736c; }
.principles-sticky > p:last-child { margin-top: 32px; }
.principle-lines { border-top: 1px solid var(--ink); }
.principle-lines article { display: grid; grid-template-columns: 54px 1fr; gap: 20px; min-height: 140px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--ink); }
.principle-lines span { color: var(--gold); font-size: .65rem; font-weight: 800; }
.principle-lines p { max-width: 700px; margin: 0; font-size: clamp(1.05rem,1.8vw,1.5rem); letter-spacing: -.02em; line-height: 1.35; }

/* Assessment */
.contact-section { padding: clamp(110px,12vw,180px) 0; background: #0b1211; color: var(--ivory); content-visibility: auto; contain-intrinsic-size: auto 1200px; }
.contact-intro { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(300px,.45fr); gap: 70px; align-items: end; margin-bottom: 80px; }
.contact-intro .section-code { grid-column: 1 / -1; margin-bottom: -28px; }
.contact-intro h2 { max-width: 940px; }
.contact-intro > p:last-child { color: #99a4a0; }
.contact-layout { display: grid; grid-template-columns: .52fr 1fr; gap: 70px; align-items: start; }
.assessment-note { padding-top: 28px; border-top: 1px solid var(--line-light); }
.assessment-note > span { color: var(--teal); font-size: .65rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.assessment-note ol { margin: 50px 0; padding-left: 23px; font-size: clamp(1.1rem,1.8vw,1.55rem); font-weight: 700; letter-spacing: -.025em; }
.assessment-note li { margin: 15px 0; padding-left: 8px; }
.contact-links { display: grid; gap: 11px; }
.contact-link { width: fit-content; border-bottom: 1px solid currentColor; color: #b5bfbb; font-size: .78rem; font-weight: 800; }
.contact-form { padding: clamp(26px,4vw,48px); border-radius: var(--radius); background: var(--ivory); color: var(--ink); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 7px; }
.field--wide { grid-column: 1 / -1; }
.field label { color: #414946; font-size: .64rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.field input, .field select, .field textarea { width: 100%; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: transparent; color: var(--ink); padding: 14px 2px; outline: none; }
.field input, .field select { min-height: 50px; }
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: #52736c; box-shadow: 0 2px 0 #52736c; }
.field select option { color: var(--ink); }
.form-note { margin: 24px 0; color: var(--muted-dark); font-size: .68rem; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.form-status { color: #365a51; font-size: .72rem; font-weight: 800; }

/* Footer */
.site-footer { padding: 78px 0 28px; background: #040706; color: var(--ivory); content-visibility: auto; contain-intrinsic-size: auto 440px; }
.footer-top { display: grid; grid-template-columns: 1.25fr .75fr .4fr; gap: 60px; padding-bottom: 68px; }
.footer-brand h2 { margin: 0 0 12px; font-size: clamp(2.2rem,4vw,4rem); letter-spacing: -.065em; }
.footer-brand p { max-width: 500px; margin: 0; color: #88938f; }
.footer-col h3 { margin: 0 0 18px; color: #737e79; font-size: .6rem; letter-spacing: .15em; text-transform: uppercase; }
.footer-col a { display: block; width: fit-content; margin: 9px 0; font-size: .78rem; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 24px; border-top: 1px solid var(--line-light); color: #75807b; font-size: .66rem; }

/* Legal and utility pages */
.eyebrow { margin: 0 0 22px; color: var(--muted-dark); font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.legal-page { min-height: 100vh; padding: 150px 0 100px; background: var(--ivory-2); }
.legal-page + .site-footer { background: #040706; }
.legal-hero { max-width: 900px; }
.legal-hero h1 { margin: 0; font-size: clamp(3.5rem,8vw,8rem); line-height: .86; letter-spacing: -.08em; }
.legal-meta { margin: 28px 0 0; color: var(--muted-dark); }
.legal-content { display: grid; grid-template-columns: 230px minmax(0,760px); gap: 80px; margin-top: 90px; }
.legal-aside { color: var(--muted-dark); font-size: .78rem; }
.legal-body h2 { margin: 48px 0 14px; font-size: 1.65rem; letter-spacing: -.035em; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p, .legal-body li { color: #505955; }
.legal-body a { text-decoration: underline; }
.not-found { min-height: 100vh; display: grid; place-items: center; padding: 40px; background: var(--ink); color: var(--ivory); text-align: center; }
.not-found strong { display: block; color: var(--green); font-size: clamp(7rem,20vw,18rem); line-height: .75; letter-spacing: -.1em; }
.not-found h1 { margin: 40px 0 10px; font-size: clamp(2rem,5vw,4rem); letter-spacing: -.05em; }
.not-found p { color: var(--muted); }

.reveal-ready [data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s var(--ease); }
.reveal-ready [data-reveal].is-visible { opacity: 1; transform: none; }
@keyframes breathe { 50% { transform: scale(1.12); box-shadow: 0 0 0 18px rgba(169,199,156,.055), 0 0 0 42px rgba(169,199,156,.02); } }

@media (max-width: 1180px) {
  .nav-menu { gap: 12px; }
  .nav-menu a { font-size: .66rem; }
  .hero-grid { grid-template-columns: 1fr .62fr; gap: 46px; }
  .method-copy { grid-template-columns: 120px 1fr; }
  .method-copy > p:not(.method-name), .method-copy small { grid-column: 2; }
  .product { grid-template-columns: .27fr 1fr .58fr; gap: 30px; }
}

@media (max-width: 1040px) {
  :root { --header: 70px; }
  .menu-button { display: grid; }
  .nav-menu { position: fixed; inset: var(--header) 0 auto; display: grid; align-content: start; gap: 0; padding: 18px 22px 30px; color: var(--ink); border-bottom: 1px solid var(--line); background: rgba(242,238,228,.98); transform: translateY(-130%); opacity: 0; visibility: hidden; transition: transform .25s ease, opacity .25s ease, visibility .25s; }
  .nav-menu.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: .95rem; }
  .nav-menu a::after { display: none; }
  .nav-cta { display: none; }
  body.menu-open { overflow: hidden; }
}

@media (max-width: 860px) {
  .shell { width: min(calc(100% - 30px), var(--content)); }
  .section { padding: 100px 0; }
  .section-heading, .problem-layout, .infrastructure-head, .contact-intro { grid-template-columns: 1fr; gap: 32px; }
  .section-heading .section-code, .contact-intro .section-code { margin-bottom: -12px; }
  .hero { min-height: auto; }
  .hero-grid, .questions-layout, .principles-layout, .contact-layout { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: clamp(4.6rem,14vw,7.4rem); }
  .signal-stage { width: min(100%,620px); min-height: 560px; margin: 20px auto 0; }
  .hero-commercial { grid-template-columns: 130px 1fr; }
  .problem-layout { align-items: start; }
  .editorial-contrast { grid-template-columns: 1fr 60px 1fr; }
  .method-path::before { right: 32px; }
  .method-path li { grid-template-columns: 60px 1fr 60px; }
  .method-signal { right: 26px; }
  .method-path li:nth-child(2) .method-signal { right: 25px; }.method-path li:nth-child(3) .method-signal { right: 23px; }.method-path li:nth-child(4) .method-signal { right: 21px; }
  .product { grid-template-columns: 130px 1fr; }
  .product ul { grid-column: 2; }
  .questions-intro, .principles-sticky { position: static; }
  .question-list { margin-top: 30px; }
  .infrastructure-rows article { grid-template-columns: .38fr 1fr 90px; }
  .infrastructure-rows p { grid-column: 2; }
  .infrastructure-rows i { grid-column: 3; grid-row: 1 / span 2; }
  .engagement-phases { grid-template-columns: 1fr; }
  .engagement-phases article { min-height: 330px; }
  .engagement-phases h3 { margin-top: 80px; }
  .operating-detail ol { grid-template-columns: repeat(2,1fr); }
  .contact-layout { gap: 50px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .legal-content { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 600px) {
  .brand-copy small { display: none; }
  .brand img { width: 31px; height: 31px; }
  .lang-switch a { padding: 4px 7px; }
  .section { padding: 86px 0; }
  .section-heading { margin-bottom: 50px; }
  .section-heading h2, .problem-layout h2, .questions-intro h2, .infrastructure-head h2, .principles-sticky h2, .contact-intro h2 { font-size: clamp(3.15rem,14vw,5rem); }
  .hero { padding-top: 122px; }
  .hero-copy h1 { font-size: clamp(3.65rem,16vw,5.1rem); }
  .hero-lead { margin-top: 30px; font-size: 1.05rem; }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .hero-trust { display: grid; gap: 5px; }
  .hero-trust i { display: none; }
  .signal-stage { min-height: 470px; border-radius: 26px; }
  .stage-head { top: 23px; left: 23px; right: 23px; }
  .signal-field { inset: 60px 10px 126px; }
  .signal-readout { left: 23px; right: 23px; bottom: 23px; }
  .hero-commercial { grid-template-columns: 1fr; gap: 8px; margin-top: 70px; }
  .editorial-contrast { grid-template-columns: 1fr; margin-top: 65px; }
  .contrast-axis { justify-content: start; transform: rotate(90deg); transform-origin: left; }
  .contrast-side > span { margin-bottom: 28px; }
  .contrast-side p { font-size: 2rem; }
  .method-path::before { left: 7px; right: auto; }
  .method-path li { grid-template-columns: 28px 1fr; gap: 14px; min-height: 0; padding: 32px 0 38px; }
  .method-index { writing-mode: vertical-rl; }
  .method-copy { grid-template-columns: 1fr; gap: 16px; }
  .method-copy > p:not(.method-name), .method-copy small { grid-column: auto; }
  .method-signal, .method-path li:nth-child(n) .method-signal { top: 34px; left: 1px; right: auto; width: 13px; height: 13px; }
  .method-path li:nth-child(4) .method-signal { width: 17px; height: 17px; left: -1px; }
  .product { grid-template-columns: 1fr; min-height: 0; padding: 34px 0; }
  .product ul { grid-column: auto; }
  .product-promise h3 { font-size: 2.75rem; }
  .product-meta { display: flex; gap: 18px; align-items: center; }
  .product-meta span { margin: 0; }
  .question-list li { grid-template-columns: 42px 1fr; }
  .question-list p { font-size: 1.4rem; }
  .infrastructure-rows article { grid-template-columns: 1fr 70px; gap: 20px; padding: 30px 0; }
  .infrastructure-rows article > span, .infrastructure-rows h3, .infrastructure-rows p { grid-column: 1; }
  .infrastructure-rows i { width: 62px; height: 62px; grid-column: 2; grid-row: 1 / span 3; }
  .traffic-modes { grid-template-columns: 1fr; }
  .traffic-modes article { min-height: 330px; padding: 28px; }
  .traffic-modes h3 { margin-top: 90px; }
  .engagement-phases article { min-height: 300px; padding: 28px; }
  .operating-detail ol { grid-template-columns: 1fr; }
  .operating-detail li { min-height: 80px; }
  .principle-lines article { grid-template-columns: 42px 1fr; }
  .contact-intro { margin-bottom: 55px; }
  .form-grid { grid-template-columns: 1fr; }
  .field--wide { grid-column: auto; }
  .contact-form { padding: 24px; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .legal-page { padding-top: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}