@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Sora:wght@500;600;700;800&display=swap");

:root {
  --bg: #f4f7fb;
  --paper: #ffffff;
  --ink: #0b1220;
  --muted: #5b6778;
  --line: rgba(11, 18, 32, 0.08);
  --teal: #2eb6d4;
  --teal-2: #1494b3;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 72px;
  --max: 1180px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; color: inherit; cursor: pointer; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

h1, h2, h3, h4 {
  font-family: Sora, sans-serif;
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal-2);
}
.kicker i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 6px rgba(46, 182, 212, 0.16);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.3s var(--ease), background 0.3s, box-shadow 0.3s;
}
.btn:hover {
  transform: translateY(-1px);
  background: #000;
  box-shadow: 0 12px 30px rgba(11, 18, 32, 0.18);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  box-shadow: none;
}
.btn-ghost:hover { background: #fff; box-shadow: none; }

.loader {
  position: fixed; inset: 0; z-index: 200; background: #fff;
  display: grid; place-items: center;
  transition: 0.5s var(--ease);
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader-mark {
  width: 72px; height: 2px; border-radius: 99px; background: #e8eef3; overflow: hidden;
}
.loader-mark::after {
  content: "";
  display: block;
  width: 40%;
  height: 100%;
  background: var(--teal);
  animation: load 0.9s var(--ease) infinite;
}
@keyframes load { 0% { transform: translateX(-120%); } 100% { transform: translateX(280%); } }

.nav {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(244, 247, 251, 0.62);
  backdrop-filter: blur(18px) saturate(1.5);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.logo img { height: 26px; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--muted); }
.nav-links a:hover, .nav-links a.is-active { color: var(--ink); }
.nav-end { display: flex; align-items: center; gap: 14px; }
.lang { font-size: 12px; font-weight: 600; color: var(--teal-2); }
.nav-cta { min-height: 38px; padding: 0 16px; font-size: 13px; }
.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 120;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  position: absolute; left: 10px; width: 20px; height: 1.5px; background: var(--ink);
  transition: transform 0.3s var(--ease), top 0.3s var(--ease), background 0.3s;
}
.menu-btn span { top: 19px; }
.menu-btn span::before { content: ""; top: -6px; }
.menu-btn span::after { content: ""; top: 6px; }
.nav.is-open .menu-btn span { background: transparent; }
.nav.is-open .menu-btn span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .menu-btn span::after { top: 0; transform: rotate(-45deg); }

.hero {
  position: relative;
  padding: calc(var(--nav-h) + 64px) 0 0;
  overflow: hidden;
}
.hero-mesh, .hero-grid {
  position: absolute; inset: 0;
  pointer-events: none;
}
.hero-mesh {
  background:
    radial-gradient(ellipse at 18% 8%, rgba(46, 182, 212, 0.28), transparent 46%),
    radial-gradient(ellipse at 82% 0%, rgba(164, 148, 255, 0.16), transparent 42%),
    radial-gradient(ellipse at 50% 42%, rgba(46, 182, 212, 0.1), transparent 55%);
  filter: blur(8px);
}
.hero-grid {
  background-image:
    linear-gradient(rgba(11, 18, 32, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 18, 32, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 28%, #000 18%, transparent 72%);
}
.hero-copy {
  position: relative;
  text-align: center;
  max-width: 940px;
  margin: 0 auto 40px;
}
.hero h1 {
  font-size: clamp(3.1rem, 8.4vw, 6.7rem);
  margin: 18px 0 20px;
}
.hero h1 span { color: var(--teal-2); }
.hero .lead {
  margin: 0 auto 28px;
  max-width: 52ch;
  color: var(--muted);
  font-size: 1.12rem;
}
.hero-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }

.stage-wrap {
  position: relative;
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
}
.stage {
  position: relative;
  background: linear-gradient(180deg, #fff, #eef4f8);
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 28px 28px 0 0;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 40px 90px rgba(20, 148, 179, 0.14);
}
.stage-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 42px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}
.stage-bar i {
  width: 9px; height: 9px; border-radius: 50%; background: #d5dde6;
}
.stage-bar span {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 600;
  color: #8a96a6;
  letter-spacing: 0.04em;
}
.stage img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  background: linear-gradient(180deg, #fff 30%, #eef4f8);
}

.session {
  position: absolute;
  right: 22px;
  top: 64px;
  bottom: auto;
  width: 240px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 50px rgba(11, 18, 32, 0.12);
  backdrop-filter: blur(18px);
  z-index: 2;
}
.session header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 600;
}
.session .live {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--teal-2);
  font-style: normal;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}
.session .pulse {
  width: 8px; height: 8px; border-radius: 50%; background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
}
.session li {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.session b { color: var(--ink); font-weight: 650; }
.session li em {
  font-style: normal;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal);
}

.clients {
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: #fff;
}
.client-row {
  display: flex; gap: 48px; white-space: nowrap;
  animation: marquee 32s linear infinite;
  font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: #8a96a6;
}
@keyframes marquee { to { transform: translateX(-50%); } }

.section { padding: 108px 0; }
.section-head { max-width: 740px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(2.2rem, 5vw, 3.9rem); margin-top: 12px; }

.rail {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.rail b {
  display: grid;
  place-items: center;
  height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-family: Sora, sans-serif;
  font-size: 13px;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.rail span {
  height: 2px;
  background: linear-gradient(90deg, rgba(46, 182, 212, 0.15), var(--teal), rgba(46, 182, 212, 0.15));
  position: relative;
  overflow: hidden;
}
.rail span::after {
  content: "";
  position: absolute; inset: 0 auto 0 0;
  width: 28%;
  background: #fff;
  box-shadow: 0 0 16px 8px var(--teal);
  animation: sweep 2.4s linear infinite;
}
@keyframes sweep { to { transform: translateX(400%); } }

.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.flow-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px 22px 26px;
  min-height: 268px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.flow-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 50px rgba(20, 148, 179, 0.12);
}
.flow-card strong {
  display: block;
  font-family: Sora, sans-serif;
  font-size: 13px;
  color: var(--teal-2);
  margin: 8px 0 10px;
}
.flow-card h3 { font-size: 1.45rem; margin-bottom: 10px; }
.flow-card p { color: var(--muted); font-size: 0.95rem; }

.viz {
  height: 84px;
  border-radius: 16px;
  background: linear-gradient(180deg, #f7fbfd, #eef7fa);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.viz-sign svg { width: 100%; height: 100%; }
.viz-sign path {
  fill: none;
  stroke: var(--teal);
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-dasharray: 12 9;
  animation: dash 7s linear infinite;
}
@keyframes dash { to { stroke-dashoffset: -180; } }
.viz-id::before, .viz-id::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 72px; height: 44px;
  transform: translate(-50%, -50%);
  border-radius: 8px;
  border: 1.5px solid var(--teal-2);
  background: linear-gradient(180deg, #fff, #f3f8fb);
  box-shadow: inset -16px -12px 0 -10px #d4b56a;
}
.viz-id::after {
  width: 78px; height: 78px;
  border-radius: 50%;
  background: transparent;
  border-color: rgba(46, 182, 212, 0.35);
  animation: rings 2.2s ease-out infinite;
}
@keyframes rings {
  from { transform: translate(-50%, -50%) scale(0.4); opacity: 0.9; }
  to { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}
.viz-live::before {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 46px; height: 46px;
  transform: translate(-50%, -50%);
  border: 2px solid var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(46, 182, 212, 0.1);
}
.viz-live::after {
  content: "";
  position: absolute;
  left: 50%; top: 18px;
  width: 2px; height: 48px;
  background: var(--teal);
  transform-origin: top;
  animation: scan 2s ease-in-out infinite;
}
@keyframes scan {
  0%, 100% { transform: translateX(-50%) scaleY(0.2); opacity: 0.3; }
  50% { transform: translateX(-50%) scaleY(1); opacity: 1; }
}

.about-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: start;
}
.about-copy h2 { font-size: clamp(2.3rem, 4.5vw, 3.6rem); margin: 12px 0 20px; max-width: 14ch; }
.about-copy > p { color: var(--muted); margin-bottom: 28px; }
.about-pair { display: grid; gap: 14px; }
.about-card {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
}
.about-card h3 { font-size: 1.15rem; margin: 4px 0 6px; }
.about-card p { color: var(--muted); font-size: 0.94rem; }

.stack {
  background: var(--ink);
  color: #fff;
  border-radius: 28px;
  padding: 32px 28px;
  display: grid;
  gap: 18px;
  box-shadow: 0 30px 70px rgba(11, 18, 32, 0.22);
}
.stack p { color: rgba(255, 255, 255, 0.62); }
.stack h3 { font-size: 1.7rem; color: #fff; }
.stack-log {
  display: grid;
  gap: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: rgba(126, 228, 245, 0.9);
}
.stack-log span {
  display: flex;
  justify-content: space-between;
  padding: 9px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.stack-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(46, 182, 212, 0.16);
  color: #7ee4f5;
  font-size: 12px;
  font-weight: 600;
}

.bento {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 16px;
}
.bento article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.bento article:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(11, 18, 32, 0.08);
}
.bento article:first-child {
  grid-row: span 2;
  background: linear-gradient(180deg, #fff 40%, #eaf7fb);
}
.bento article:last-child { grid-column: 1 / -1; min-height: 170px; flex-direction: row; align-items: center; gap: 32px; }
.bento h3 { font-size: 1.55rem; margin: 10px 0 8px; }
.bento p { color: var(--muted); }
.bento .num { font-family: Sora, sans-serif; font-size: 12px; color: var(--teal-2); }

.nodes {
  height: 120px;
  margin-top: 24px;
  background-image: radial-gradient(circle at 20% 40%, var(--teal) 3px, transparent 4px),
    radial-gradient(circle at 55% 22%, var(--teal-2) 3px, transparent 4px),
    radial-gradient(circle at 78% 62%, var(--teal) 3px, transparent 4px),
    radial-gradient(circle at 38% 78%, #7ee4f5 3px, transparent 4px);
  background-repeat: no-repeat;
}
.nodes::before {
  content: "";
  display: block;
  height: 100%;
  background:
    linear-gradient(115deg, transparent 20%, rgba(46, 182, 212, 0.35) 20.5%, transparent 21%) ,
    linear-gradient(25deg, transparent 48%, rgba(20, 148, 179, 0.28) 48.5%, transparent 49%);
}
.term {
  min-width: 280px;
  height: 92px;
  border-radius: 14px;
  background: #0b1220;
  padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: #7ee4f5;
  line-height: 1.7;
}
.docs, .shield {
  height: 64px;
  margin-bottom: 8px;
  position: relative;
}
.docs span {
  position: absolute;
  width: 46px; height: 58px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 8px 16px rgba(11, 18, 32, 0.06);
}
.docs span:nth-child(1) { left: 0; transform: rotate(-8deg); }
.docs span:nth-child(2) { left: 18px; background: #eaf7fb; }
.docs span:nth-child(3) { left: 36px; transform: rotate(7deg); border-color: var(--teal); }
.shield {
  width: 54px;
  border-radius: 50%;
  border: 2px solid var(--teal);
  box-shadow: 0 0 0 8px rgba(46, 182, 212, 0.1), 0 0 0 16px rgba(46, 182, 212, 0.05);
}

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 36px 0;
}
.feature:nth-of-type(odd) .feature-media { order: 2; }
.feature-copy h3 { font-size: clamp(1.8rem, 3vw, 2.7rem); margin: 10px 0 14px; }
.feature-copy p { color: var(--muted); max-width: 44ch; }
.feature-media {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(20, 148, 179, 0.1);
}
.feature-media img { width: 100%; height: 380px; object-fit: cover; }

.work-list { display: grid; gap: 10px; }
.work-row {
  display: grid;
  grid-template-columns: 168px 1fr 1.25fr;
  gap: 24px;
  align-items: center;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: 0.3s var(--ease);
}
.work-row:hover { border-color: rgba(46, 182, 212, 0.45); transform: translateX(4px); }
.work-ui {
  height: 92px;
  border-radius: 12px;
  background: linear-gradient(180deg, #f7fbfd, #e8f4f8);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.work-ui span {
  position: absolute;
  border-radius: 5px;
  background: rgba(46, 182, 212, 0.22);
}
.ui-research span:nth-child(1) { left: 10px; top: 12px; width: 36px; height: 68px; }
.ui-research span:nth-child(2) { left: 54px; top: 12px; right: 10px; height: 18px; width: auto; }
.ui-research span:nth-child(3) { left: 54px; top: 38px; right: 28px; height: 42px; width: auto; background: rgba(20, 148, 179, 0.16); }
.ui-ops span { top: 16px; width: 42px; height: 60px; }
.ui-ops span:nth-child(1) { left: 12px; }
.ui-ops span:nth-child(2) { left: 62px; height: 44px; background: rgba(20, 148, 179, 0.3); }
.ui-ops span:nth-child(3) { left: 112px; height: 52px; }
.ui-pharma span { width: 14px; height: 14px; border-radius: 3px; }
.ui-pharma span:nth-child(1) { left: 16px; top: 20px; width: 54px; height: 54px; }
.ui-pharma span:nth-child(2) { left: 82px; top: 18px; right: 14px; width: auto; height: 16px; }
.ui-pharma span:nth-child(3) { left: 82px; top: 42px; right: 32px; width: auto; height: 32px; }
.ui-coverage span { left: 18px; width: 128px; height: 10px; }
.ui-coverage span:nth-child(1) { top: 18px; }
.ui-coverage span:nth-child(2) { top: 40px; width: 96px; }
.ui-coverage span:nth-child(3) { top: 62px; width: 112px; }
.ui-portal span { top: 18px; width: 40px; height: 56px; }
.ui-portal span:nth-child(1) { left: 16px; }
.ui-portal span:nth-child(2) { left: 64px; }
.ui-portal span:nth-child(3) { left: 112px; height: 40px; }
.ui-telecom span { left: 16px; height: 8px; border-radius: 99px; }
.ui-telecom span:nth-child(1) { top: 22px; width: 70%; }
.ui-telecom span:nth-child(2) { top: 42px; width: 48%; }
.ui-telecom span:nth-child(3) { top: 62px; width: 62%; }

.work-row h3 { font-size: 1.2rem; margin-bottom: 4px; }
.work-row p { color: var(--muted); font-size: 0.92rem; }
.work-row .idx {
  font-family: Sora, sans-serif;
  font-size: 12px;
  color: var(--teal-2);
}

.guide-link { font-size: 14px; font-weight: 600; color: var(--teal-2); }
.feature-copy .guide-link { display: inline-block; margin-top: 14px; }
.guide-link:hover { color: var(--ink); }

.guide-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 56px;
  align-items: start;
}
.guide-toc {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  display: grid;
  gap: 4px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}
.guide-toc p {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal-2);
}
.guide-toc a { padding: 6px 0; font-size: 14px; color: var(--muted); line-height: 1.4; }
.guide-toc a:hover { color: var(--ink); }
.guide-body { max-width: 780px; min-width: 0; }
.guide-layout > *, .split > *, .case-grid > * { min-width: 0; }
.guide-intro { font-size: 1.08rem; color: var(--ink); margin-bottom: 16px; }
.guide-article { padding: 40px 0; border-top: 1px solid var(--line); scroll-margin-top: calc(var(--nav-h) + 16px); }
.guide-article h3 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); margin: 10px 0 18px; }
.guide-article h4 {
  font-family: Sora, sans-serif;
  font-size: 1.02rem;
  letter-spacing: -0.03em;
  margin: 26px 0 12px;
}
.guide-article p:not(.kicker) { color: var(--muted); margin-bottom: 14px; }
.guide-article ol, .guide-article ul { display: grid; gap: 10px; padding-left: 20px; color: var(--muted); }
.guide-article li::marker { color: var(--teal-2); font-weight: 600; }
.guide-article strong { color: var(--ink); font-weight: 600; }
.guide-table { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: var(--bg); }
.guide-table table { width: 100%; min-width: 620px; border-collapse: collapse; font-size: 0.92rem; }
.guide-table th, .guide-table td { padding: 14px 16px; text-align: left; vertical-align: top; }
.guide-table th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-2);
  border-bottom: 1px solid var(--line);
}
.guide-table td { color: var(--muted); border-bottom: 1px solid var(--line); }
.guide-table tr:last-child td { border-bottom: 0; }
.guide-table td:first-child { font-family: Sora, sans-serif; font-weight: 600; color: var(--ink); white-space: nowrap; }

.faq-list { display: grid; gap: 10px; max-width: 880px; }
.faq-list details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: border-color 0.3s var(--ease);
}
.faq-list details[open], .faq-list details:hover { border-color: rgba(46, 182, 212, 0.45); }
.faq-list summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  font-family: Sora, sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  flex-shrink: 0;
  color: var(--teal-2);
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1;
  transition: transform 0.3s var(--ease);
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { padding: 0 22px 20px; color: var(--muted); font-size: 0.95rem; }

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
}
.contact-grid h2 { font-size: clamp(2.2rem, 4vw, 3.4rem); margin: 10px 0 24px; }
.contact-list { display: grid; gap: 14px; margin-bottom: 28px; }
.contact-item { display: grid; grid-template-columns: 18px 1fr; gap: 12px; color: var(--muted); }
.contact-item svg { margin-top: 4px; stroke: var(--teal-2); }
.map { min-height: 420px; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.map iframe { width: 100%; height: 100%; min-height: 420px; border: 0; }

.section-white { background: #fff; }
.section-tight { padding: 40px 0; }

.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 56px) 0 72px;
  overflow: hidden;
}
.page-hero .wrap { position: relative; }
.page-hero h1 { font-size: clamp(2.3rem, 5.4vw, 4.3rem); margin: 16px 0 20px; max-width: 20ch; }
.page-hero .lead { max-width: 62ch; color: var(--muted); font-size: 1.1rem; margin-bottom: 28px; }
.page-hero .hero-actions { justify-content: flex-start; }
.page-hero + .section { padding-top: 16px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin-bottom: 28px; font-size: 13px; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: #b3bdc9; }
.crumbs a:hover { color: var(--ink); }
.crumbs [aria-current] { color: var(--ink); }

.prose { max-width: 780px; }
.prose p { color: var(--muted); margin-bottom: 16px; font-size: 1.04rem; }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 8px 0 16px; }
.prose p + h2 { margin-top: 40px; }
.prose strong { color: var(--ink); font-weight: 600; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s;
}
.section-white .card { background: var(--bg); }
.card h3 { font-size: 1.25rem; line-height: 1.18; }
.card p:not(.kicker) { color: var(--muted); font-size: 0.95rem; }
.card .guide-link { margin-top: auto; padding-top: 8px; }
.card-links { display: grid; gap: 6px; margin-top: auto; padding-top: 10px; }
.card-links .guide-link { margin: 0; padding: 0; font-size: 13px; }
.ticks-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; max-width: 980px; }

.section-dark { background: var(--ink); color: #fff; }
.section-dark .kicker { color: #7ee4f5; }
.section-dark .section-head p:not(.kicker) { color: rgba(255, 255, 255, 0.66); margin-top: 16px; font-size: 1.05rem; }
.custom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.custom-grid h3 { font-size: 1.3rem; margin-bottom: 18px; color: #fff; }
.custom-steps { list-style: none; counter-reset: step; display: grid; gap: 10px; }
.custom-steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 16px 14px 54px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.94rem;
}
.custom-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: Sora, sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #7ee4f5;
}
.custom-steps strong { color: #fff; font-weight: 600; }
.custom-history { display: grid; gap: 10px; }
.custom-history article {
  padding: 18px 20px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.custom-history h4 { font-family: Sora, sans-serif; font-size: 1.02rem; letter-spacing: -0.03em; margin-bottom: 6px; }
.custom-history p { color: rgba(255, 255, 255, 0.66); font-size: 0.92rem; }
.custom-history .refs { margin-top: 8px; font-size: 12px; font-weight: 600; letter-spacing: 0.04em; color: #7ee4f5; }
.section-dark .guide-link { color: #7ee4f5; }
.section-dark .guide-link:hover { color: #fff; }
.custom-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }

.card-link:hover { transform: translateY(-4px); border-color: rgba(46, 182, 212, 0.45); box-shadow: 0 20px 50px rgba(20, 148, 179, 0.1); }

.split { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; margin-top: 56px; align-items: start; }
.section-head + .split { margin-top: 0; }
.split h3 { font-size: 1.35rem; margin-bottom: 18px; }
.steps { list-style: none; counter-reset: step; display: grid; gap: 12px; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 16px 14px 56px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: Sora, sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--teal-2);
}
.steps strong, .ticks strong { color: var(--ink); font-weight: 600; }
.ticks { list-style: none; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 26px; color: var(--muted); font-size: 0.95rem; }
.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.5em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  transform: rotate(-45deg);
}

.link-list { display: grid; gap: 10px; max-width: 880px; }
.link-row {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: 0.3s var(--ease);
}
.link-row:hover { border-color: rgba(46, 182, 212, 0.45); transform: translateX(4px); }
.link-row span { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--teal-2); }
.link-row strong { font-family: Sora, sans-serif; font-weight: 600; letter-spacing: -0.03em; }
.link-row em { font-style: normal; color: var(--teal-2); }

.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.facts div { padding: 18px 20px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.facts dt { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--teal-2); margin-bottom: 4px; }
.facts dd { font-family: Sora, sans-serif; font-weight: 600; letter-spacing: -0.03em; }

.case-grid { display: grid; grid-template-columns: 1.3fr 0.9fr; gap: 56px; align-items: start; }
.case-side { padding: 28px; background: var(--bg); border: 1px solid var(--line); border-radius: 22px; display: grid; gap: 16px; align-content: start; }
.section:not(.section-white) .case-side { background: #fff; }
.case-side h3 { font-size: 1.15rem; }
.case-side h3:not(:first-child) { margin-top: 12px; }

.cta-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  padding: 48px;
  border-radius: 28px;
  background: var(--ink);
  color: #fff;
  box-shadow: 0 30px 70px rgba(11, 18, 32, 0.22);
}
.cta-band h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 10px; }
.cta-band p { color: rgba(255, 255, 255, 0.66); max-width: 56ch; }
.btn-light { background: #fff; color: var(--ink); flex-shrink: 0; }
.btn-light:hover { background: #e8f7fb; }

.footer { padding: 28px 0 40px; border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a:hover { color: var(--ink); }

.top {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; background: var(--ink); color: #fff;
}

.reveal { opacity: 0; transform: translateY(18px); animation: rise 0.8s var(--ease) forwards; }
.d1 { animation-delay: 0.08s; } .d2 { animation-delay: 0.16s; } .d3 { animation-delay: 0.24s; }
@keyframes rise { to { opacity: 1; transform: none; } }
.inview { opacity: 1; }
html.js .inview { opacity: 0; transform: translateY(22px); transition: 0.7s var(--ease); }
html.js .inview.is-in { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .about-grid, .feature, .contact-grid, .flow, .bento, .rail, .guide-layout, .split, .case-grid { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
  .custom-grid, .ticks-columns { grid-template-columns: 1fr; }
  .link-row { grid-template-columns: 1fr auto; }
  .link-row span { grid-column: 1 / -1; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 32px; }
  .guide-toc { position: static; }
  .rail span { display: none; }
  .feature:nth-of-type(odd) .feature-media { order: 0; }
  .bento article:first-child { grid-row: auto; }
  .bento article:last-child { grid-column: auto; flex-direction: column; align-items: stretch; }
  .work-row { grid-template-columns: 1fr; }
  .session { display: none; }
  .menu-btn { display: block; }
  .nav-cta { display: none; }
  .nav { backdrop-filter: none; background: rgba(255, 255, 255, 0.92); }
  .nav.is-open {
    height: 100dvh;
    background: #fff;
    align-items: flex-start;
  }
  .nav.is-open .nav-inner {
    height: var(--nav-h);
  }
  .logo, .nav-end { position: relative; z-index: 120; }
  .nav-links {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 6px;
    padding: calc(var(--nav-h) + 12px) 28px 40px;
    background: #fff;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    overflow-y: auto;
  }
  .nav.is-open .nav-links { transform: none; }
  .nav-links a {
    font-family: Sora, sans-serif;
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--ink);
    padding: 10px 0;
  }
}
@media (max-width: 760px) {
  .hero h1 { font-size: 2.55rem; }
  .section { padding: 80px 0; }
  .stage img { height: auto; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
  .footer-links { justify-content: center; }
  .facts { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, html.js .inview { opacity: 1; transform: none; }
}