:root {
  --ink: #1f1830;
  --midnight: #171126;
  --midnight-soft: #241a38;
  --purple: #342551;
  --pearl: #f6f2eb;
  --paper: #fcfaf6;
  --amber: #f2a93b;
  --amber-bright: #ffb743;
  --muted: #6e6878;
  --line: rgba(31, 24, 48, .16);
  --radius: 22px;
  --max: 1240px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--pearl);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button, summary { font: inherit; }
button { color: inherit; }
svg { display: block; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--midnight);
  background: var(--amber);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform .2s ease;
}

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

:focus-visible {
  outline: 3px solid var(--amber-bright);
  outline-offset: 4px;
}

.site-header {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 50;
  width: min(calc(100% - 48px), var(--max));
  height: 94px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(220px, 1fr);
  align-items: center;
  gap: 32px;
  color: var(--paper);
  border-bottom: 1px solid rgba(255,255,255,.18);
  transform: translateX(-50%);
}

.brand { position: relative; z-index: 2; display: flex; align-items: center; gap: 12px; width: fit-content; line-height: 1; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; }
.brand-mark svg { width: 25px; fill: var(--amber); }
.brand-name { font-size: 14px; font-weight: 700; letter-spacing: .04em; }
.brand-name span { display: block; margin-top: 6px; font-size: 9px; font-weight: 500; letter-spacing: .28em; color: rgba(255,255,255,.58); }

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { position: relative; font-size: 13px; color: rgba(255,255,255,.72); transition: color .2s ease; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: var(--amber); transition: right .25s ease; }
.site-nav a:hover { color: #fff; }
.site-nav a:hover::after { right: 0; }

.header-cta { justify-self: end; padding: 10px 0; font-size: 13px; font-weight: 700; }
.header-cta span { display: inline-block; margin-left: 8px; color: var(--amber); transition: transform .2s ease; }
.header-cta:hover span { transform: translate(3px,-3px); }

.menu-toggle { position: relative; z-index: 2; display: none; border: 0; background: transparent; }

.hero {
  position: relative;
  min-height: 820px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(430px, .78fr);
  align-items: center;
  gap: 6vw;
  padding: 145px max(24px, calc((100vw - var(--max)) / 2)) 88px;
  color: var(--paper);
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(circle at 73% 32%, #3f2a63 0, transparent 35%),
    var(--midnight);
  background-size: 58px 58px, 58px 58px, auto, auto;
  isolation: isolate;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -12vw;
  left: -7vw;
  width: 43vw;
  height: 43vw;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 50%;
  box-shadow: 0 0 0 5vw rgba(255,255,255,.015), 0 0 0 10vw rgba(255,255,255,.012);
  z-index: -1;
}

.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -170px;
  width: 430px;
  height: 430px;
  border: 80px solid rgba(242,169,59,.045);
  border-radius: 50%;
  z-index: -1;
}

.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .4; z-index: -1; }
.glow-one { top: 22%; left: 45%; width: 8px; height: 8px; background: var(--amber); box-shadow: 0 0 70px 32px rgba(242,169,59,.28); }
.glow-two { right: 2%; top: 58%; width: 10px; height: 10px; background: #a783d5; box-shadow: 0 0 100px 44px rgba(167,131,213,.2); }

.hero-copy { position: relative; z-index: 3; max-width: 740px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 24px; font-size: 12px; font-weight: 700; letter-spacing: .26em; color: rgba(255,255,255,.62); }
.eyebrow > span { width: 28px; height: 1px; background: var(--amber); }

.hero h1 {
  margin: 0;
  font-size: clamp(54px, 6.1vw, 90px);
  line-height: 1.08;
  letter-spacing: -.065em;
  font-weight: 800;
}

.heading-line { display: block; width: max-content; max-width: 100%; }
.accent-line { position: relative; margin-top: 10px; }
.accent-line .amber { color: var(--amber-bright); }
.accent-line i { position: absolute; right: -54px; top: -10px; width: 29px; height: 29px; border-top: 2px solid var(--amber); border-right: 2px solid var(--amber); }

@keyframes heading-shift {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(10px); }
}

.accent-line { animation: heading-shift 5s cubic-bezier(.45,0,.55,1) infinite; }

.hero-intro { max-width: 610px; margin: 30px 0 0; font-size: 17px; line-height: 1.9; color: rgba(255,255,255,.66); }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 25px; min-height: 54px; padding: 0 24px; border-radius: 2px; font-size: 14px; font-weight: 700; transition: transform .25s ease, background .25s ease, box-shadow .25s ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: var(--midnight); background: var(--pearl); box-shadow: 8px 8px 0 var(--amber); }
.button-primary:hover { background: #fff; box-shadow: 4px 4px 0 var(--amber); }
.text-link { display: inline-flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.3); }
.text-link span { color: var(--amber); }

.hero-poster { position: relative; width: 100%; max-width: 520px; height: 525px; margin-left: auto; perspective: 1000px; }
.poster-panel { position: absolute; border: 1px solid rgba(255,255,255,.14); box-shadow: 0 22px 65px rgba(0,0,0,.28); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.panel-main { top: 50px; left: 62px; z-index: 3; width: 365px; height: 385px; padding: 23px; background: linear-gradient(145deg, rgba(87,67,119,.78), rgba(33,23,51,.7)); transform: rotate(2deg); }
.panel-meta { display: flex; justify-content: space-between; padding-bottom: 14px; color: rgba(255,255,255,.55); border-bottom: 1px solid rgba(255,255,255,.13); font: 10px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; }
.signal-graphic { height: 235px; display: grid; place-items: center; }
.signal-graphic svg { width: 100%; overflow: visible; }
.grid-path { fill: none; stroke: rgba(255,255,255,.1); stroke-width: 1; }
.signal-path { fill: none; stroke: var(--amber); stroke-width: 3; filter: drop-shadow(0 0 8px rgba(242,169,59,.45)); stroke-dasharray: 450; animation: draw-line 3.5s ease-in-out infinite alternate; }
.signal-graphic circle { fill: var(--midnight); stroke: var(--amber); stroke-width: 2; }

@keyframes draw-line { from { stroke-dashoffset: 90; } to { stroke-dashoffset: 0; } }

.panel-bottom { display: flex; align-items: end; justify-content: space-between; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.13); }
.panel-bottom strong { font-size: 18px; }
.panel-bottom span { text-align: right; font-size: 10px; line-height: 1.5; color: rgba(255,255,255,.52); }
.panel-left, .panel-right, .panel-bottom-card { z-index: 4; width: 146px; height: 116px; padding: 14px 16px; background: rgba(31,23,48,.82); }
.panel-left { top: 8px; left: 0; transform: rotate(-7deg); }
.panel-right { top: 110px; right: -2px; transform: rotate(7deg); }
.panel-bottom-card { right: 25px; bottom: 0; transform: rotate(-4deg); }
.panel-number { display: block; margin-bottom: 18px; color: var(--amber); font: 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.poster-panel strong { display: block; font-size: 14px; }
.poster-panel small { color: rgba(255,255,255,.48); font-size: 10px; letter-spacing: .12em; }
.poster-note { position: absolute; right: 22px; top: 18px; color: rgba(255,255,255,.38); font: 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .18em; writing-mode: vertical-rl; }
.poster-stamp { position: absolute; left: 4px; bottom: 74px; z-index: 5; width: 82px; height: 82px; display: grid; place-content: center; text-align: center; color: var(--midnight); background: var(--amber); border-radius: 50%; transform: rotate(10deg); box-shadow: 0 16px 36px rgba(0,0,0,.25); }
.poster-stamp::before { content: ""; position: absolute; inset: 6px; border: 1px dashed rgba(23,17,38,.45); border-radius: 50%; }
.poster-stamp span { font-size: 9px; letter-spacing: .18em; }
.poster-stamp strong { font-size: 18px; line-height: 1.2; }
.poster-orbit { position: absolute; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; }
.orbit-one { inset: 22px 30px 38px 10px; transform: rotate(-15deg); }
.orbit-two { inset: 80px -25px 30px 75px; transform: rotate(20deg); }
.hero-index { position: absolute; left: max(24px, calc((100vw - var(--max)) / 2)); right: max(24px, calc((100vw - var(--max)) / 2)); bottom: 27px; display: flex; align-items: center; gap: 15px; color: rgba(255,255,255,.3); font: 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; }
.hero-index i { flex: 1; height: 1px; background: rgba(255,255,255,.1); }

.phrase-strip { height: 66px; display: flex; align-items: center; color: var(--midnight); background: var(--amber); overflow: hidden; }
.phrase-track { width: max-content; display: flex; align-items: center; animation: ticker 24s linear infinite; }
.phrase-track span { padding: 0 36px; font-size: 13px; font-weight: 800; letter-spacing: .18em; white-space: nowrap; }
.phrase-track i { font-style: normal; font-size: 8px; opacity: .55; }

@keyframes ticker { to { transform: translateX(-50%); } }

.section { padding: 120px max(24px, calc((100vw - var(--max)) / 2)); }
.section-kicker { display: flex; align-items: center; gap: 13px; margin-bottom: 34px; }
.section-kicker span { display: grid; place-items: center; width: 31px; height: 31px; color: var(--paper); background: var(--midnight); border-radius: 50%; font: 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.section-kicker p { margin: 0; font-size: 12px; font-weight: 700; letter-spacing: .2em; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(280px, .7fr); align-items: end; gap: 9vw; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 4.3vw, 62px); line-height: 1.2; letter-spacing: -.045em; }
.section-heading h2 span { position: relative; color: #6d558f; }
.section-heading h2 span::after { content: ""; position: absolute; left: 2px; right: 0; bottom: -5px; height: 3px; background: var(--amber); transform: rotate(-1.5deg); }
.section-heading > p { max-width: 420px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.9; }

.method-grid { display: grid; grid-template-columns: 1.18fr 1fr 1fr; gap: 18px; margin-top: 72px; }
.method-card { position: relative; min-height: 420px; display: flex; flex-direction: column; padding: 26px; background: rgba(255,255,255,.52); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .3s ease, box-shadow .3s ease; }
.method-card:hover { transform: translateY(-8px); box-shadow: 0 25px 60px rgba(35,23,52,.1); }
.method-featured { color: var(--paper); background: var(--midnight-soft); border-color: var(--midnight-soft); }
.card-top { display: flex; align-items: center; justify-content: space-between; font-size: 11px; font-weight: 700; letter-spacing: .13em; }
.card-top b { font: 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace; color: #968da0; }
.method-card h3 { margin: auto 0 8px; font-size: 24px; letter-spacing: -.02em; }
.method-card p { margin: 0; max-width: 340px; color: var(--muted); font-size: 14px; }
.method-featured p { color: rgba(255,255,255,.55); }
.method-visual { position: absolute; left: 50%; top: 43%; width: 190px; height: 190px; transform: translate(-50%,-50%); }
.pulse-dot { position: absolute; inset: 50% auto auto 50%; width: 24px; height: 24px; background: var(--amber); border-radius: 50%; transform: translate(-50%,-50%); box-shadow: 0 0 40px rgba(242,169,59,.6); }
.pulse-ring { position: absolute; inset: 50% auto auto 50%; border: 1px solid rgba(242,169,59,.5); border-radius: 50%; transform: translate(-50%,-50%); }
.ring-a { width: 105px; height: 105px; }
.ring-b { width: 185px; height: 185px; border-color: rgba(255,255,255,.12); }
.ring-b::after, .ring-a::after { content: ""; position: absolute; top: 50%; left: -4px; width: 7px; height: 7px; background: var(--amber); border-radius: 50%; }
.stack-visual { position: absolute; left: 50%; top: 43%; width: 170px; height: 130px; transform: translate(-50%,-50%); }
.stack-visual i { position: absolute; display: block; width: 128px; height: 78px; border: 1px solid var(--purple); background: rgba(109,85,143,.08); transform: skewY(-9deg); }
.stack-visual i:nth-child(1) { left: 0; top: 0; }
.stack-visual i:nth-child(2) { left: 20px; top: 22px; background: rgba(109,85,143,.13); }
.stack-visual i:nth-child(3) { left: 40px; top: 44px; background: var(--amber); border-color: var(--amber); }
.arrow-visual { position: absolute; left: 50%; top: 43%; width: 152px; height: 152px; display: grid; place-items: center; border: 1px solid rgba(31,24,48,.2); border-radius: 50%; transform: translate(-50%,-50%); }
.arrow-visual::before { content: ""; position: absolute; inset: 20px; border: 1px dashed rgba(31,24,48,.18); border-radius: 50%; }
.arrow-visual span { font-size: 54px; line-height: 1; color: var(--purple); }

.capabilities { position: relative; color: var(--paper); background: var(--midnight); overflow: hidden; }
.capabilities::before { content: "服务能力"; position: absolute; top: 32px; right: -20px; color: transparent; font-size: clamp(80px, 15vw, 220px); font-weight: 900; line-height: 1; letter-spacing: -.07em; -webkit-text-stroke: 1px rgba(255,255,255,.045); pointer-events: none; }
.section-kicker.light span { color: var(--midnight); background: var(--amber); }
.section-kicker.light p { color: rgba(255,255,255,.7); }
.section-heading.inverse { position: relative; }
.section-heading.inverse h2 span { color: var(--amber); }
.section-heading.inverse h2 span::after { background: rgba(255,255,255,.55); }
.section-heading.inverse > p { color: rgba(255,255,255,.52); }
.capability-list { margin-top: 75px; border-top: 1px solid rgba(255,255,255,.17); }
.capability-row { display: grid; grid-template-columns: 70px minmax(240px,.8fr) minmax(300px,1fr) 44px; align-items: center; gap: 36px; min-height: 145px; border-bottom: 1px solid rgba(255,255,255,.17); transition: background .25s ease, padding .25s ease; }
.capability-row:hover { padding: 0 18px; background: rgba(255,255,255,.04); }
.cap-number { color: var(--amber); font: 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.cap-title h3 { margin: 0; font-size: 25px; }
.cap-title p { margin: 4px 0 0; color: rgba(255,255,255,.4); font-size: 12px; letter-spacing: .12em; }
.cap-description { max-width: 490px; margin: 0; color: rgba(255,255,255,.55); font-size: 14px; }
.cap-icon { display: grid; place-items: center; width: 42px; height: 42px; color: var(--midnight); background: var(--amber); border-radius: 50%; font-size: 20px; transition: transform .25s ease; }
.capability-row:hover .cap-icon { transform: rotate(12deg); }

.process-heading { grid-template-columns: 1.5fr .7fr; }
.process-list { list-style: none; margin: 78px 0 0 auto; padding: 0; max-width: 1000px; }
.process-list li { display: grid; grid-template-columns: 180px 1fr; min-height: 150px; }
.process-marker { position: relative; }
.process-marker span { display: grid; place-items: center; position: relative; z-index: 2; width: 48px; height: 48px; color: var(--midnight); background: var(--amber); border-radius: 50%; font: 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace; box-shadow: 0 0 0 8px var(--pearl); }
.process-marker i { position: absolute; left: 23px; top: 48px; bottom: -4px; width: 1px; background: var(--line); }
.process-list li > div:last-child { padding: 4px 0 36px; border-bottom: 1px solid var(--line); }
.process-list h3 { margin: 0 0 9px; font-size: 22px; }
.process-list p { margin: 0; max-width: 620px; color: var(--muted); font-size: 14px; }

.principles { padding-top: 20px; }
.principle-poster { position: relative; min-height: 520px; display: flex; flex-direction: column; justify-content: space-between; padding: 55px; color: var(--paper); background: linear-gradient(115deg, #2f2148, #171126 72%); border-radius: 28px; overflow: hidden; isolation: isolate; }
.principle-poster::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(90deg, black, transparent 80%); }
.principle-code { position: absolute; top: 30px; right: 32px; color: rgba(255,255,255,.3); font: 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .18em; }
.principle-copy { position: relative; z-index: 2; }
.principle-copy h2 { max-width: 850px; margin: 0; font-size: clamp(39px, 5.1vw, 70px); line-height: 1.18; letter-spacing: -.05em; }
.principle-copy h2 span { color: var(--amber); }
.principle-tags { position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 10px; }
.principle-tags span { padding: 8px 15px; border: 1px solid rgba(255,255,255,.22); border-radius: 100px; font-size: 11px; letter-spacing: .12em; }
.principle-sun { position: absolute; right: -80px; bottom: -130px; z-index: 1; width: 410px; height: 410px; border-radius: 50%; border: 1px solid rgba(242,169,59,.24); box-shadow: 0 0 0 65px rgba(242,169,59,.035), 0 0 0 130px rgba(242,169,59,.025); }
.principle-sun i { position: absolute; inset: 70px; display: block; background: var(--amber); border-radius: 50%; box-shadow: 0 0 80px rgba(242,169,59,.25); }

.questions { display: grid; grid-template-columns: .72fr 1fr; gap: 10vw; }
.question-heading { display: block; }
.question-heading > p { margin-top: 26px; }
.accordion { border-top: 1px solid var(--line); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 25px; min-height: 86px; cursor: pointer; font-size: 17px; font-weight: 700; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary i { position: relative; flex: 0 0 28px; width: 28px; height: 28px; border: 1px solid rgba(31,24,48,.28); border-radius: 50%; }
.accordion summary i::before, .accordion summary i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 1px; background: var(--ink); transform: translate(-50%,-50%); transition: transform .25s ease; }
.accordion summary i::after { transform: translate(-50%,-50%) rotate(90deg); }
.accordion details[open] summary i { color: var(--paper); background: var(--midnight); }
.accordion details[open] summary i::before, .accordion details[open] summary i::after { background: var(--paper); }
.accordion details[open] summary i::after { transform: translate(-50%,-50%) rotate(0); }
.answer { overflow: hidden; }
.answer p { max-width: 620px; margin: -2px 55px 27px 0; color: var(--muted); font-size: 14px; }

.contact { position: relative; min-height: 680px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 100px 24px; text-align: center; color: var(--paper); background: var(--midnight); overflow: hidden; isolation: isolate; }
.contact::before, .contact::after { content: ""; position: absolute; z-index: -1; border: 1px solid rgba(255,255,255,.09); border-radius: 50%; }
.contact::before { width: 650px; height: 650px; left: -270px; top: -260px; box-shadow: 0 0 0 80px rgba(255,255,255,.018), 0 0 0 160px rgba(255,255,255,.01); }
.contact::after { width: 420px; height: 420px; right: -120px; bottom: -250px; border-color: rgba(242,169,59,.25); box-shadow: 0 0 0 80px rgba(242,169,59,.025); }
.contact-meta { position: absolute; top: 38px; left: max(24px, calc((100vw - var(--max)) / 2)); right: max(24px, calc((100vw - var(--max)) / 2)); display: flex; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.4); font: 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .16em; }
.contact h2 { margin: 0; font-size: clamp(52px, 7.3vw, 106px); line-height: 1.02; letter-spacing: -.065em; }
.contact h2 span { color: var(--amber); }
.contact > p { margin: 30px 0 0; color: rgba(255,255,255,.58); font-size: 15px; }
.contact-actions { position: relative; z-index: 3; display: flex; align-items: center; gap: 38px; margin-top: 42px; }
.button-amber { color: var(--midnight); background: var(--amber); box-shadow: 8px 8px 0 rgba(255,255,255,.16); }
.button-amber:hover { background: var(--amber-bright); box-shadow: 4px 4px 0 rgba(255,255,255,.16); }
.light-link { color: var(--paper); }
.contact-outline { position: absolute; left: 50%; bottom: -6vw; z-index: -1; color: transparent; font-size: 17vw; font-weight: 900; line-height: .7; letter-spacing: -.08em; -webkit-text-stroke: 1px rgba(255,255,255,.035); transform: translateX(-50%); white-space: nowrap; }

.back-top { position: fixed; right: 22px; bottom: 22px; z-index: 40; width: 44px; height: 44px; display: grid; place-items: center; color: var(--midnight); background: var(--amber); border: 0; border-radius: 50%; cursor: pointer; box-shadow: 0 10px 30px rgba(0,0,0,.2); opacity: 0; visibility: hidden; transform: translateY(15px); transition: opacity .2s ease, visibility .2s ease, transform .2s ease; }
.back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }

@media (max-width: 1050px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-nav, .header-cta { display: none; }
  .menu-toggle { justify-self: end; display: flex; align-items: center; gap: 12px; padding: 10px 0; color: var(--paper); cursor: pointer; }
  .menu-label { font-size: 12px; font-weight: 700; letter-spacing: .12em; }
  .menu-icon { width: 25px; height: 18px; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
  .menu-icon i { display: block; width: 100%; height: 1px; background: currentColor; transition: transform .25s ease; }
  .menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav.open { position: fixed; inset: 0; z-index: 1; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 28px; padding: 110px 7vw 60px; background: rgba(23,17,38,.98); }
  .site-nav.open a { font-size: clamp(28px, 5vw, 48px); font-weight: 700; color: var(--paper); }
  .hero { grid-template-columns: 1fr 390px; gap: 30px; }
  .hero h1 { font-size: clamp(52px, 6vw, 68px); }
  .hero-poster { transform: scale(.86); transform-origin: right center; }
  .method-grid { grid-template-columns: 1fr 1fr; }
  .method-featured { grid-row: span 2; min-height: 858px; }
  .capability-row { grid-template-columns: 48px minmax(210px,.75fr) 1fr 42px; gap: 22px; }
  .questions { gap: 6vw; }
}

@media (max-width: 800px) {
  .site-header { width: calc(100% - 36px); height: 78px; }
  .brand-name { font-size: 13px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 50px; padding: 122px 22px 80px; }
  .hero-copy { max-width: 680px; }
  .hero h1 { font-size: clamp(48px, 11vw, 72px); }
  .hero-intro { max-width: 600px; }
  .hero-poster { justify-self: center; margin: 0; transform: none; }
  .hero-index { left: 22px; right: 22px; }
  .section { padding: 90px 22px; }
  .section-heading, .process-heading { grid-template-columns: 1fr; gap: 26px; }
  .section-heading > p { max-width: 580px; }
  .method-grid { grid-template-columns: 1fr 1fr; }
  .method-featured { grid-column: 1 / -1; grid-row: auto; min-height: 430px; }
  .capability-row { grid-template-columns: 42px 1fr 42px; padding: 30px 0; }
  .capability-row:hover { padding: 30px 10px; }
  .cap-description { grid-column: 2 / 4; }
  .cap-icon { grid-column: 3; grid-row: 1; }
  .process-list { margin-top: 60px; }
  .process-list li { grid-template-columns: 120px 1fr; }
  .questions { grid-template-columns: 1fr; gap: 60px; }
  .question-heading > p { max-width: 580px; }
}

@media (max-width: 560px) {
  .site-header { width: calc(100% - 32px); }
  .brand-mark { width: 34px; height: 34px; }
  .brand-mark svg { width: 22px; }
  .menu-label { display: none; }
  .hero { padding-left: 18px; padding-right: 18px; }
  .hero h1 { font-size: clamp(43px, 13vw, 60px); letter-spacing: -.07em; }
  .accent-line i { display: none; }
  .hero-intro { margin-top: 24px; font-size: 15px; line-height: 1.8; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 24px; margin-top: 31px; }
  .hero-poster { width: 100%; height: 440px; }
  .panel-main { left: 7%; top: 38px; width: 80%; height: 338px; padding: 18px; }
  .signal-graphic { height: 190px; }
  .panel-left, .panel-right, .panel-bottom-card { width: 119px; height: 98px; padding: 12px; }
  .panel-left { left: 0; }
  .panel-right { right: 0; }
  .panel-bottom-card { right: 6%; bottom: 0; }
  .panel-number { margin-bottom: 11px; }
  .poster-stamp { bottom: 46px; width: 70px; height: 70px; }
  .poster-stamp strong { font-size: 15px; }
  .orbit-one { inset: 15px 20px 25px 0; }
  .orbit-two { inset: 70px -35px 20px 60px; }
  .phrase-strip { height: 58px; }
  .section { padding: 76px 18px; }
  .section-kicker { margin-bottom: 25px; }
  .section-heading h2 { font-size: clamp(36px, 10.4vw, 50px); }
  .method-grid { grid-template-columns: 1fr; gap: 13px; margin-top: 52px; }
  .method-card, .method-featured { min-height: 380px; }
  .capabilities { padding-top: 78px; }
  .capability-list { margin-top: 52px; }
  .capability-row { grid-template-columns: 32px 1fr 36px; gap: 14px; }
  .cap-title h3 { font-size: 20px; }
  .cap-description { font-size: 13px; }
  .cap-icon { width: 36px; height: 36px; }
  .process-list li { grid-template-columns: 72px 1fr; min-height: 170px; }
  .process-list li > div:last-child { padding-bottom: 30px; }
  .principles { padding-top: 6px; }
  .principle-poster { min-height: 560px; padding: 38px 26px; border-radius: 20px; }
  .principle-copy h2 { font-size: 39px; }
  .principle-sun { width: 300px; height: 300px; right: -115px; bottom: -75px; }
  .principle-tags { max-width: 210px; }
  .accordion summary { min-height: 78px; font-size: 15px; }
  .contact { min-height: 650px; padding-left: 18px; padding-right: 18px; }
  .contact h2 { font-size: clamp(50px, 15vw, 70px); }
  .contact > p br { display: none; }
  .contact-actions { flex-direction: column; gap: 28px; }
  .back-top { right: 14px; bottom: 14px; }
}

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

@supports not (backdrop-filter: blur(14px)) {
  .poster-panel { background: rgba(38,28,58,.96); }
}