:root {
  --ink: #101616;
  --muted: #65706e;
  --line: #dfe5e3;
  --soft-line: #edf1ef;
  --paper: #ffffff;
  --wash: #f4f7f6;
  --wash-2: #eaf0ee;
  --accent: #b8ff35;
  --accent-deep: #82c900;
  --dark: #10201d;
  --dark-2: #172b27;
  --max: 1280px;
  --pad: clamp(20px, 4vw, 56px);
  --radius: 2px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }

.container {
  width: min(calc(100% - (var(--pad) * 2)), var(--max));
  margin: 0 auto;
}

.mono {
  font-family: "Helvetica Neue", Arial, sans-serif;
  letter-spacing: .04em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: #4f5c59;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 22px;
  height: 2px;
  background: var(--accent-deep);
  content: "";
}

.eyebrow.light { color: #b8c6c2; }
.eyebrow.light::before { background: var(--accent); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(223, 229, 227, .9);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  height: 84px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  line-height: 1;
}

.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  overflow: hidden;
  background: var(--dark);
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  left: 7px;
  width: 17px;
  height: 4px;
  background: var(--accent);
  content: "";
}

.brand-mark::before { top: 7px; box-shadow: 0 12px 0 var(--accent); }
.brand-mark::after { top: 13px; width: 11px; }

.brand-word {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: .08em;
}

.brand-note {
  padding-left: 12px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .08em;
}

.desktop-nav { display: flex; height: 100%; align-items: center; gap: 34px; }
.desktop-nav a {
  position: relative;
  display: flex;
  height: 100%;
  align-items: center;
  color: #46514f;
  font-size: 16px;
  font-weight: 500;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--accent-deep);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}

.desktop-nav a:hover::after,
.desktop-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.desktop-nav a.active { color: var(--ink); }

.nav-index { color: #8d9694; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; margin-right: 7px; }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}

.menu-toggle span { display: block; width: 18px; height: 1px; margin: 5px auto; background: var(--ink); transition: .2s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  inset: 85px 0 0;
  z-index: 45;
  padding: 34px var(--pad);
  background: var(--paper);
}

.mobile-nav.open { display: block; }
.mobile-nav a { display: flex; justify-content: space-between; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 22px; font-weight: 500; }
.mobile-nav a span { color: #96a09e; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }

.hero {
  position: relative;
  min-height: calc(100vh - 84px);
  overflow: hidden;
  background: linear-gradient(115deg, #fff 0%, #fff 54%, #f0f4f2 54%, #e8eeeb 100%);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 45%;
  height: 2px;
  background: var(--accent-deep);
  content: "";
}

.hero-grid {
  display: grid;
  min-height: calc(100vh - 84px);
  grid-template-columns: 1.03fr .97fr;
  align-items: center;
  gap: clamp(32px, 5vw, 80px);
}

.hero-copy { position: relative; z-index: 2; padding: 80px 0; }
.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(48px, 6.6vw, 92px);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1.08;
}

.hero h1 span { display: block; color: #5e6967; }
.hero-lead { max-width: 610px; margin: 32px 0 0; color: #52605d; font-size: clamp(17px, 1.5vw, 21px); line-height: 1.85; }

.hero-index {
  border-top: 1px solid #aab5b2;
  border-left: 1px solid #aab5b2;
  background: rgba(255,255,255,.42);
}
.hero-index-head {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border-right: 1px solid #aab5b2;
  border-bottom: 1px solid #aab5b2;
  color: #6b7875;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 9px;
  letter-spacing: .1em;
}
.hero-index a {
  display: grid;
  min-height: 94px;
  grid-template-columns: 118px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 0 22px;
  border-right: 1px solid #aab5b2;
  border-bottom: 1px solid #aab5b2;
  transition: background .2s ease, color .2s ease;
}
.hero-index a:hover { background: var(--dark); color: #fff; }
.hero-model { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: .025em; }
.hero-index a strong { font-size: 15px; }
.hero-index a small { color: #75817e; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 8px; letter-spacing: .08em; }

.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 42px; }
.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 0 22px;
  border: 1px solid var(--dark);
  background: var(--dark);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: .2s ease;
}

.button::after { content: "↗"; font-size: 16px; }
.button:hover { border-color: var(--accent-deep); background: var(--accent); color: var(--ink); }
.button.secondary { border-color: #b8c1bf; background: transparent; color: var(--ink); }
.button.secondary:hover { border-color: var(--dark); background: var(--dark); color: #fff; }

.compute-canvas {
  position: relative;
  width: 100%;
  aspect-ratio: .86;
  background-image: linear-gradient(rgba(16,32,29,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(16,32,29,.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

.compute-canvas::before {
  position: absolute;
  inset: 10% 8% 9% 12%;
  border: 1px solid rgba(16,32,29,.17);
  content: "";
}

.chip-board {
  position: absolute;
  top: 22%;
  left: 18%;
  width: 64%;
  aspect-ratio: 1.18;
  border: 1px solid #60706c;
  background: rgba(255,255,255,.26);
}

.chip-board::before {
  position: absolute;
  inset: 24% 27%;
  border: 1px solid var(--dark);
  background: repeating-linear-gradient(0deg, transparent 0 10px, rgba(16,32,29,.12) 10px 11px), var(--accent);
  box-shadow: 0 0 0 8px rgba(255,255,255,.7), 0 0 0 9px #60706c;
  content: "";
}

.chip-board::after {
  position: absolute;
  inset: 8%;
  background:
    linear-gradient(90deg, transparent 49.7%, #71817d 49.7% 50.3%, transparent 50.3%),
    linear-gradient(0deg, transparent 49.7%, #71817d 49.7% 50.3%, transparent 50.3%),
    repeating-linear-gradient(90deg, transparent 0 16px, rgba(16,32,29,.12) 16px 17px);
  clip-path: polygon(0 0, 40% 0, 40% 38%, 60% 38%, 60% 0, 100% 0, 100% 100%, 60% 100%, 60% 62%, 40% 62%, 40% 100%, 0 100%);
  content: "";
}

.board-node { position: absolute; z-index: 2; width: 8%; aspect-ratio: 1; background: var(--accent); box-shadow: 0 0 18px rgba(184,255,53,.45); }
.board-node.n1 { top: 9%; right: 10%; }
.board-node.n2 { bottom: 11%; left: 9%; width: 4%; }
.board-node.n3 { right: 15%; bottom: 13%; width: 5%; }

.canvas-label {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #4b5754;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 10px;
  letter-spacing: .08em;
}
.canvas-label::before { width: 6px; height: 6px; background: var(--accent-deep); content: ""; }
.canvas-label.l1 { top: 9%; left: 4%; }
.canvas-label.l2 { right: 1%; bottom: 17%; }
.canvas-axis { position: absolute; right: 3%; top: 13%; color: #7b8784; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 9px; writing-mode: vertical-rl; letter-spacing: .1em; }

.signal-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fbfcfc; }
.signal-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.signal-item { min-height: 98px; padding: 23px 26px; border-right: 1px solid var(--line); }
.signal-item:first-child { border-left: 1px solid var(--line); }
.signal-no { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; }
.signal-item strong { display: block; margin-top: 6px; font-size: 15px; font-weight: 600; }
.signal-item small { color: var(--muted); font-size: 13px; }

.section { padding: clamp(86px, 10vw, 148px) 0; }
.section.soft { background: var(--wash); }
.section.dark { background: var(--dark); color: #fff; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 58px; }
.section-title { max-width: 760px; margin: 0; font-size: clamp(34px, 4.5vw, 58px); font-weight: 600; letter-spacing: -.045em; line-height: 1.18; }
.section-desc { max-width: 500px; margin: 0; color: var(--muted); font-size: 18px; }
.dark .section-desc { color: #aebbb8; }

.company-statement { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.statement-grid { display: grid; grid-template-columns: .6fr 1.4fr; }
.statement-label { padding: 42px 0; color: var(--muted); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; letter-spacing: .1em; }
.statement-text { margin: 0; padding: 38px 0 42px 50px; border-left: 1px solid var(--line); font-size: clamp(22px, 2.8vw, 38px); font-weight: 500; letter-spacing: -.025em; line-height: 1.55; }

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.product-card { position: relative; min-height: 420px; overflow: hidden; padding: 38px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.product-card:hover .product-arrow { background: var(--accent); transform: rotate(45deg); }
.product-top { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.product-code { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 12px; letter-spacing: .08em; }
.product-card h3 { margin: 8px 0 0; font-size: 26px; font-weight: 600; }
.product-arrow { display: grid; width: 40px; height: 40px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line); transition: .25s ease; }
.product-visual {
  position: relative;
  height: 260px;
  margin: 35px 0 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: #f8faf9;
  background-image: linear-gradient(rgba(16,32,29,.065) 1px, transparent 1px), linear-gradient(90deg, rgba(16,32,29,.065) 1px, transparent 1px);
  background-size: 20px 20px;
}
.product-visual::before,
.detail-visual::before {
  position: absolute;
  top: 17px;
  left: 19px;
  z-index: 2;
  color: #52615d;
  content: attr(data-model);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 10px;
  letter-spacing: .09em;
}
.product-visual::after,
.detail-visual::after {
  position: absolute;
  right: 18px;
  bottom: 15px;
  color: #7a8784;
  content: "SYSTEM OUTLINE / ORTHOGRAPHIC";
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 8px;
  letter-spacing: .08em;
}
.product-card p { max-width: 520px; margin: 0; color: var(--muted); font-size: 16px; }
.product-type {
  display: flex;
  min-height: 205px;
  margin: 34px 0 24px;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 0 20px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.product-type strong { font-family: "Helvetica Neue", Arial, sans-serif; font-size: clamp(48px, 7vw, 86px); font-weight: 400; letter-spacing: -.07em; line-height: 1; }
.product-type span { color: #788582; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 9px; letter-spacing: .1em; }

.hardware { position: absolute; color: var(--dark); }
.hardware.module {
  inset: 27% 13% 20%;
  border: 1px solid currentColor;
  background:
    linear-gradient(90deg, transparent 0 8%, currentColor 8% 8.4%, transparent 8.4% 91.6%, currentColor 91.6% 92%, transparent 92%),
    linear-gradient(0deg, transparent 0 13%, rgba(16,32,29,.14) 13% 14%, transparent 14% 86%, rgba(16,32,29,.14) 86% 87%, transparent 87%);
}
.hardware.module::before {
  position: absolute;
  inset: 19% 30%;
  border: 1px solid currentColor;
  background: repeating-linear-gradient(0deg, transparent 0 8px, rgba(16,32,29,.11) 8px 9px), rgba(184,255,53,.38);
  box-shadow: 0 0 0 6px #f8faf9, 0 0 0 7px currentColor;
  content: "";
}
.hardware.module::after {
  position: absolute;
  right: 8%;
  bottom: -10px;
  left: 8%;
  height: 9px;
  background: repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 7px);
  content: "";
}
.hardware.server {
  inset: 35% 9% 27%;
  border: 1px solid currentColor;
  background:
    radial-gradient(circle, transparent 0 15px, currentColor 15px 16px, transparent 16px) 8% 50% / 58px 58px no-repeat,
    radial-gradient(circle, transparent 0 15px, currentColor 15px 16px, transparent 16px) 27% 50% / 58px 58px no-repeat,
    radial-gradient(circle, transparent 0 15px, currentColor 15px 16px, transparent 16px) 46% 50% / 58px 58px no-repeat,
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(16,32,29,.13) 18px 19px);
}
.hardware.server::before {
  position: absolute;
  top: 16%;
  right: 3%;
  width: 18%;
  height: 68%;
  border: 1px solid currentColor;
  background: linear-gradient(var(--accent), var(--accent)) 76% 12% / 8px 8px no-repeat;
  content: "";
}
.hardware.server::after {
  position: absolute;
  bottom: -22px;
  left: 0;
  color: #63716e;
  content: "FRONT ELEVATION";
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 8px;
  letter-spacing: .08em;
}
.hardware.server.tall {
  inset: 29% 9% 21%;
  background:
    repeating-linear-gradient(0deg, transparent 0 16px, rgba(16,32,29,.16) 16px 17px),
    repeating-linear-gradient(90deg, transparent 0 34px, rgba(16,32,29,.13) 34px 35px);
}
.hardware.edge {
  inset: 25% 25% 20%;
  border: 1px solid currentColor;
  background:
    repeating-linear-gradient(90deg, transparent 0 8px, rgba(16,32,29,.17) 8px 9px) 50% 23% / 72% 30% no-repeat,
    linear-gradient(90deg, var(--accent) 0 8px, transparent 8px) 12% 82% / 70% 7px no-repeat;
}
.hardware.edge::before {
  position: absolute;
  top: -8px;
  right: 8%;
  left: 8%;
  height: 7px;
  border: 1px solid currentColor;
  border-bottom: 0;
  content: "";
}
.hardware.edge::after {
  position: absolute;
  right: 8%;
  bottom: 14%;
  width: 30%;
  height: 8px;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  content: "";
}

.solution-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #304540; border-left: 1px solid #304540; }
.solution-card { min-height: 370px; padding: 30px; border-right: 1px solid #304540; border-bottom: 1px solid #304540; transition: background .2s ease; }
.solution-card:hover { background: var(--dark-2); }
.solution-no { color: var(--accent); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }
.solution-icon { display: grid; width: 82px; height: 82px; margin: 62px 0 42px; place-items: center; border: 1px solid #45605a; color: var(--accent); }
.solution-icon svg { width: 42px; height: 42px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: square; stroke-linejoin: miter; }
.solution-card h3 { margin: 0 0 12px; font-size: 20px; }
.solution-card p { margin: 0; color: #aab8b5; font-size: 15px; }

.architecture { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; align-items: center; }
.architecture-copy h2 { margin: 0 0 24px; font-size: clamp(34px, 4vw, 54px); letter-spacing: -.04em; line-height: 1.2; }
.architecture-copy p { color: var(--muted); font-size: 17px; }
.stack { border-top: 1px solid var(--line); }
.stack-row { display: grid; grid-template-columns: 72px 1fr auto; align-items: center; min-height: 78px; padding: 0 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); border-left: 1px solid var(--line); background: #fff; transition: .2s ease; }
.stack-row:hover { background: var(--accent); }
.stack-row span:first-child { color: #8b9693; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; }
.stack-row strong { font-size: 16px; }
.stack-row small { color: var(--muted); font-size: 14px; }

.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.process-step { position: relative; padding: 34px 30px 38px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-step:first-child { border-left: 1px solid var(--line); }
.process-step::before { position: absolute; top: -3px; left: -1px; width: 30%; height: 3px; background: var(--accent-deep); content: ""; }
.process-step span { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }
.process-step h3 { margin: 62px 0 14px; font-size: 20px; }
.process-step p { margin: 0; color: var(--muted); font-size: 15px; }
.dark-process .process-step { border-color: #3b4f4a; }
.dark-process .process-step:first-child { border-left-color: #3b4f4a; }
.dark-process .process-step h3 { color: #fff; }
.dark-process .process-step p { color: #aab8b5; }

.page-hero { position: relative; overflow: hidden; padding: clamp(80px, 10vw, 140px) 0; border-bottom: 1px solid var(--line); background: #f7f9f8; }
.page-hero::before { position: absolute; right: -8%; top: -48%; width: 50vw; height: 50vw; border: 1px solid #dce4e1; border-radius: 50%; box-shadow: 0 0 0 70px rgba(223,229,227,.22), 0 0 0 140px rgba(223,229,227,.15); content: ""; }
.page-hero::before { display: none; }
.page-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr .75fr; align-items: end; gap: 80px; }
.page-hero h1 { max-width: 800px; margin: 0; font-size: clamp(52px, 7vw, 92px); font-weight: 600; letter-spacing: -.055em; line-height: 1.08; }
.page-hero p { max-width: 520px; margin: 0 0 8px; color: var(--muted); font-size: 18px; }

.anchor-tabs { position: sticky; top: 84px; z-index: 30; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.94); backdrop-filter: blur(12px); }
.anchor-tabs .container { display: flex; overflow-x: auto; scrollbar-width: none; }
.anchor-tabs a { flex: 0 0 auto; padding: 18px 26px; border-right: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.anchor-tabs a:first-child { border-left: 1px solid var(--line); }
.anchor-tabs a:hover, .anchor-tabs a.active { background: var(--dark); color: #fff; }

.product-detail { scroll-margin-top: 140px; }
.product-detail + .product-detail { border-top: 1px solid var(--line); }
.detail-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(45px, 8vw, 110px); align-items: center; }
.detail-visual {
  position: relative;
  min-height: 450px;
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: #f8faf9;
  background-image: linear-gradient(rgba(16,32,29,.065) 1px, transparent 1px), linear-gradient(90deg, rgba(16,32,29,.065) 1px, transparent 1px);
  background-size: 22px 22px;
}
.detail-visual .hardware.module { inset: 29% 12% 22%; }
.detail-visual .hardware.server { inset: 37% 8% 30%; }
.detail-visual .hardware.server.tall { inset: 30% 8% 23%; }
.detail-visual .hardware.edge { inset: 27% 24% 22%; }
.detail-copy h2 { margin: 8px 0 12px; font-size: clamp(36px, 4vw, 54px); letter-spacing: -.04em; }
.detail-tagline { margin: 0 0 26px; font-size: 20px; font-weight: 500; }
.detail-copy > p { color: var(--muted); }
.detail-grid.text-only { grid-template-columns: .72fr 1.28fr; align-items: start; }
.detail-identity {
  display: flex;
  min-height: 430px;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 34px 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.detail-identity span,
.detail-identity small { color: #6f7c79; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; letter-spacing: .1em; }
.detail-identity strong { color: var(--ink); font-family: "Helvetica Neue", Arial, sans-serif; font-size: clamp(70px, 9vw, 126px); font-weight: 400; letter-spacing: -.085em; line-height: .9; writing-mode: vertical-rl; transform: rotate(180deg); }
.feature-list { margin-top: 34px; border-top: 1px solid var(--line); }
.feature { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.feature span { color: var(--muted); font-size: 14px; }
.feature strong { font-size: 15px; font-weight: 500; }

.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.scenario { min-height: 440px; padding: 40px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.scenario-head { display: flex; justify-content: space-between; gap: 20px; }
.scenario h2 { max-width: 330px; margin: 0; font-size: 30px; line-height: 1.3; }
.scenario-no { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }
.scenario-diagram { display: flex; align-items: center; justify-content: center; height: 150px; margin: 44px 0 30px; border: 1px solid var(--soft-line); background-image: linear-gradient(#edf1ef 1px, transparent 1px), linear-gradient(90deg, #edf1ef 1px, transparent 1px); background-size: 20px 20px; }
.diagram-node { display: grid; min-width: 62px; height: 38px; place-items: center; border: 1px solid var(--dark); background: #fff; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 9px; }
.diagram-node.core { border-color: var(--accent-deep); background: var(--accent); }
.diagram-line { width: 34px; height: 1px; background: #87928f; }
.scenario p { color: var(--muted); font-size: 16px; }
.scenario-terms { display: flex; flex-wrap: wrap; gap: 8px; margin: 68px 0 38px; }
.scenario-terms span { padding: 8px 12px; border: 1px solid var(--line); color: #52605d; font-size: 13px; }

.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.principle { padding: 36px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principle span { color: var(--accent-deep); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }
.principle h3 { margin: 70px 0 14px; font-size: 20px; }
.principle p { margin: 0; color: var(--muted); font-size: 15px; }

.service-flow { position: relative; margin-top: 70px; }
.service-flow::before { position: absolute; top: 54px; right: 12%; left: 12%; height: 1px; background: #51645f; content: ""; }
.service-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-stage { padding: 0 12px; text-align: center; }
.stage-node { display: grid; position: relative; width: 108px; height: 108px; margin: 0 auto 30px; place-items: center; border: 1px solid #567069; border-radius: 50%; background: var(--dark); color: var(--accent); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 12px; }
.stage-node::after { position: absolute; inset: 9px; border: 1px dashed #46605a; border-radius: 50%; content: ""; }
.service-stage h3 { font-size: 18px; }
.service-stage p { color: #aab8b5; font-size: 15px; }

.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.boundary-block h2 { margin: 0 0 24px; font-size: 30px; }
.check-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.check-list li { display: flex; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line); color: #485451; font-size: 16px; }
.check-list li::before { color: var(--accent-deep); content: "＋"; }

.legal { max-width: 860px; }
.legal h1 { margin: 0 0 22px; font-size: clamp(44px, 6vw, 72px); letter-spacing: -.05em; }
.legal .updated { color: var(--muted); font-family: "Helvetica Neue", Arial, sans-serif; font-size: 11px; }
.legal-body { margin-top: 70px; }
.legal-body section { padding: 34px 0; border-top: 1px solid var(--line); }
.legal-body h2 { margin: 0 0 14px; font-size: 20px; }
.legal-body p { margin: 0 0 10px; color: #53605d; font-size: 16px; }

.site-footer { background: #0c1614; color: #fff; }
.footer-main { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 70px; padding: 76px 0 70px; }
.footer-brand .brand-mark { background: var(--accent); }
.footer-brand .brand-mark::before, .footer-brand .brand-mark::after { background: var(--dark); }
.footer-brand .brand-mark::before { box-shadow: 0 12px 0 var(--dark); }
.footer-brand p { max-width: 420px; margin: 26px 0 0; color: #a1afac; font-size: 15px; }
.footer-email { display: inline-block; margin-top: 20px; color: #a1afac; font-family: inherit; font-size: 15px; letter-spacing: 0; }
.footer-email::before { content: "联系邮箱："; }
.footer-email:hover { color: #fff; }
.footer-col h3 { margin: 0 0 22px; color: #778985; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; font-weight: 500; letter-spacing: .12em; }
.footer-col a { display: block; margin: 13px 0; color: #d7dfdd; font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding: 24px 0; border-top: 1px solid #263632; color: #758581; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 10px; letter-spacing: .04em; }
.footer-legal { display: flex; gap: 24px; }

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

@media (max-width: 1040px) {
  .desktop-nav { gap: 18px; }
  .brand-note { display: none; }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture { grid-template-columns: 1fr 1.2fr; gap: 50px; }
}

@media (max-width: 800px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .nav-shell { height: 68px; }
  .mobile-nav { inset: 69px 0 0; }
  .hero { min-height: auto; background: linear-gradient(180deg, #fff 0%, #fff 54%, #edf2ef 54%); }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { padding: 72px 0 18px; }
  .hero-index { width: 100%; margin: 12px auto 56px; }
  .hero-visual { width: 100%; max-width: 610px; margin: 0 auto; }
  .compute-canvas { aspect-ratio: 1.25; }
  .signal-grid { grid-template-columns: repeat(2, 1fr); }
  .statement-grid, .page-hero-grid, .detail-grid, .detail-grid.text-only, .architecture, .boundary-grid { grid-template-columns: 1fr; }
  .statement-text { padding-left: 0; border-left: 0; }
  .statement-label { padding-bottom: 0; }
  .product-card { min-height: 400px; padding: 26px; }
  .solution-grid, .process-grid, .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero-grid { gap: 35px; }
  .scenario { min-height: 400px; padding: 28px; }
  .service-flow::before { display: none; }
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 45px 24px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .brand-word { font-size: 17px; }
  .hero h1 { font-size: 46px; }
  .hero-lead { font-size: 16px; }
  .button { width: 100%; justify-content: space-between; }
  .hero-index a { min-height: 82px; grid-template-columns: 92px 1fr; }
  .hero-index a small { display: none; }
  .compute-canvas { aspect-ratio: 1; }
  .signal-item { padding: 18px; }
  .section-head { display: block; }
  .section-desc { margin-top: 24px; }
  .product-grid, .solution-grid, .process-grid, .scenario-grid, .principle-grid, .service-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 370px; }
  .product-visual { height: 220px; }
  .product-type { min-height: 155px; }
  .solution-card { min-height: 310px; }
  .solution-icon { margin: 42px 0 30px; }
  .process-step:first-child { border-left: 1px solid var(--line); }
  .process-step { border-left: 1px solid var(--line); }
  .dark-process .process-step, .dark-process .process-step:first-child { border-color: #3b4f4a; }
  .page-hero h1 { font-size: 48px; }
  .anchor-tabs { top: 68px; }
  .anchor-tabs a { padding: 15px 18px; }
  .detail-visual { min-height: 320px; }
  .detail-identity { min-height: 230px; }
  .detail-identity strong { writing-mode: horizontal-tb; transform: none; }
  .feature { grid-template-columns: 90px 1fr; }
  .scenario { min-height: 390px; }
  .service-stage { display: grid; grid-template-columns: 80px 1fr; gap: 20px; text-align: left; }
  .stage-node { width: 78px; height: 78px; margin: 0; }
  .service-stage h3 { margin-top: 0; }
  .footer-main { grid-template-columns: 1fr; gap: 35px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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