:root {
  --ink: #071a3a;
  --ink-2: #0d2b59;
  --blue: #245fd6;
  --blue-bright: #3f8bff;
  --aqua: #18d9b2;
  --sky: #73d2ff;
  --paper: #f3f7ff;
  --paper-blue: #e7f0ff;
  --muted: #6e83a6;
  --line: rgba(23, 73, 149, 0.16);
  --serif: "Iowan Old Style", "Songti SC", "STSong", serif;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  --shadow: 0 24px 80px rgba(4, 25, 64, 0.18);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, a { font: inherit; }

button { cursor: pointer; }

a { color: inherit; text-decoration: none; }

img { display: block; max-width: 100%; }

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: -80px;
  left: 20px;
  padding: 12px 16px;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
}

.skip-link:focus { top: 16px; }

.site-frame { overflow: hidden; }

.topbar {
  position: absolute;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1320px, calc(100% - 64px));
  margin: 0 auto;
  padding: 28px 0;
  color: #fff;
  transition: padding 220ms ease, background 220ms ease, box-shadow 220ms ease;
}

.topbar.is-scrolled {
  position: fixed;
  width: 100%;
  padding: 15px max(32px, calc((100vw - 1320px) / 2));
  background: rgba(7, 26, 58, 0.94);
  box-shadow: 0 8px 32px rgba(1, 12, 30, 0.16);
  backdrop-filter: blur(16px);
}

.brand { display: inline-flex; align-items: center; gap: 10px; }

.brand-logo {
  width: 168px;
  height: auto;
  border-radius: 11px;
  background: #292929;
  object-fit: contain;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  overflow: hidden;
  border: 1px solid rgba(112, 232, 255, 0.35);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(34, 88, 179, 0.52), rgba(6, 24, 55, 0.7));
}

.brand-mark img { width: 29px; height: 29px; object-fit: contain; }

.brand-wordmark {
  color: var(--aqua);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-divider { width: 1px; height: 28px; background: rgba(255, 255, 255, 0.3); }

.brand-subtitle {
  font-size: 0.57rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.35;
  opacity: 0.86;
}

.site-nav { display: flex; align-items: center; gap: 30px; }

.site-nav > a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.86rem;
  font-weight: 650;
  transition: color 180ms ease;
}

.site-nav > a:hover { color: #fff; }

.site-nav .nav-cta {
  padding: 11px 16px;
  color: #fff;
  border: 1px solid rgba(92, 213, 255, 0.54);
  border-radius: 999px;
  background: rgba(37, 95, 214, 0.3);
}

.menu-toggle { display: none; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  align-items: center;
  min-height: 840px;
  padding: 165px max(32px, calc((100vw - 1320px) / 2)) 96px;
  color: #fff;
  background:
    radial-gradient(circle at 83% 26%, rgba(45, 146, 255, 0.32), transparent 25%),
    radial-gradient(circle at 26% 95%, rgba(12, 212, 183, 0.16), transparent 25%),
    linear-gradient(122deg, #06152e 4%, #0a2c62 55%, #0c356f 100%);
  isolation: isolate;
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: -18vw;
  bottom: -21vw;
  width: 56vw;
  height: 56vw;
  content: "";
  border: 1px solid rgba(117, 218, 255, 0.25);
  border-radius: 50%;
  box-shadow: 0 0 0 54px rgba(81, 181, 255, 0.04), 0 0 0 110px rgba(81, 181, 255, 0.025);
}

.hero-grid {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image: linear-gradient(rgba(160, 212, 255, 0.075) 1px, transparent 1px), linear-gradient(90deg, rgba(160, 212, 255, 0.075) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to right, #000 0%, rgba(0, 0, 0, 0.5) 60%, transparent 100%);
}

.hero-orbit {
  position: absolute;
  z-index: -1;
  width: 55vw;
  height: 13vw;
  border: 1px solid rgba(120, 221, 255, 0.42);
  border-radius: 50%;
  transform: rotate(-22deg);
}

.hero-orbit-one { top: 27%; right: -10vw; }
.hero-orbit-two { top: 29%; right: -6vw; width: 42vw; border-color: rgba(21, 219, 182, 0.38); }

.hero-copy { max-width: 680px; padding-top: 42px; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 23px;
  color: var(--sky);
  font-size: 0.71rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.eyebrow > span { color: var(--aqua); }

.eyebrow.dark { color: #245fd6; }
.eyebrow.dark > span { color: #16ae92; }

.hero h1,
.section-intro h2,
.method-head h2,
.evidence-copy h2,
.service-heading h2,
.closing-section h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.hero h1 { max-width: 690px; font-size: clamp(3.6rem, 5.5vw, 5.9rem); }

.hero h1 em { color: #9be9ff; font-style: normal; }
.hero-end { white-space: nowrap; }

.hero-lede {
  max-width: 572px;
  margin: 30px 0 32px;
  color: rgba(238, 248, 255, 0.78);
  font-size: 1.03rem;
  line-height: 1.9;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 50px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.89rem;
  font-weight: 760;
  letter-spacing: 0.01em;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover { transform: translateY(-2px); }

.button-primary {
  color: #042547;
  background: linear-gradient(110deg, #22dcc2, #7fdbff);
  box-shadow: 0 12px 30px rgba(32, 206, 213, 0.24);
}

.button-quiet { color: #fff; border-color: rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.07); }
.button-light { color: #072152; background: #fff; }

.hero-meta { display: flex; align-items: center; gap: 12px; margin-top: 39px; color: rgba(226, 246, 255, 0.58); font-size: 0.72rem; letter-spacing: 0.08em; }
.hero-meta i { width: 4px; height: 4px; border-radius: 50%; background: var(--aqua); }

.hero-device-wrap {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 590px;
  transform: translate(2vw, 28px);
}

.stage-label {
  position: absolute;
  top: 32px;
  left: 10%;
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(211, 244, 255, 0.8);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 6px rgba(24, 217, 178, 0.12); animation: pulse 2.2s ease-in-out infinite; }

.device-shadow { position: absolute; right: 10%; bottom: 15%; width: 330px; height: 110px; border-radius: 50%; background: rgba(6, 13, 46, 0.6); filter: blur(28px); transform: rotate(-12deg); }

.phone {
  position: relative;
  overflow: hidden;
  background: #05090f;
  border: 7px solid #bdd3ed;
  border-radius: 43px;
  box-shadow: 0 34px 70px rgba(0, 7, 28, 0.55), inset 0 0 0 2px #071a3a;
}

.phone::after { position: absolute; top: 8px; left: 50%; width: 38%; height: 17px; content: ""; border-radius: 0 0 14px 14px; background: #05090f; transform: translateX(-50%); }

.phone-main { z-index: 2; width: min(270px, 27vw); aspect-ratio: 1170 / 2532; transform: rotate(4.5deg); }
.phone-focus { width: min(235px, 60vw); aspect-ratio: 1170 / 2532; }

.phone-top { position: absolute; z-index: 1; top: 10px; right: 15px; left: 15px; display: flex; align-items: center; justify-content: flex-end; gap: 4px; color: #0c1d38; font-size: 0.5rem; font-weight: 800; }
.phone-top span { margin-right: auto; }
.phone-top i { display: block; width: 4px; height: 7px; border-radius: 2px; background: currentColor; }
.phone-top b { width: 13px; height: 7px; margin-left: 2px; border: 1px solid currentColor; border-radius: 2px; }

.phone-screen { width: 100%; height: 100%; overflow: hidden; background: #edf6ff; }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.data-signal {
  position: absolute;
  z-index: 3;
  width: 190px;
  padding: 17px 18px;
  border: 1px solid rgba(142, 222, 255, 0.38);
  border-radius: 18px;
  background: rgba(12, 48, 96, 0.63);
  box-shadow: 0 19px 45px rgba(1, 12, 37, 0.23);
  backdrop-filter: blur(14px);
}

.data-signal span { display: block; margin-bottom: 10px; color: var(--aqua); font-size: 0.59rem; font-weight: 800; letter-spacing: 0.14em; }
.data-signal strong { display: block; color: #fff; font-size: 1rem; line-height: 1.35; }
.data-signal small { display: block; margin-top: 8px; color: rgba(229, 245, 255, 0.67); font-size: 0.68rem; line-height: 1.5; }
.signal-top { top: 105px; right: 4%; }
.signal-bottom { right: -2%; bottom: 40px; width: 212px; }
.signal-bottom svg { width: 100%; height: auto; margin-top: 12px; overflow: visible; }
.signal-bottom path { fill: none; stroke: #78dcff; stroke-width: 2; }
.signal-bottom circle { fill: #18d9b2; }

.thesis-strip {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr 90px;
  align-items: center;
  gap: 35px;
  width: min(1190px, calc(100% - 64px));
  min-height: 190px;
  margin: -42px auto 0;
  padding: 35px 45px;
  color: var(--ink);
  border: 1px solid rgba(107, 178, 255, 0.34);
  border-radius: 26px;
  background: rgba(247, 251, 255, 0.92);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.thesis-strip p { margin: 0; font-family: var(--serif); font-size: clamp(1.4rem, 2.25vw, 2.25rem); font-weight: 700; letter-spacing: -0.035em; line-height: 1.27; }
.thesis-strip p:first-child { border-right: 1px solid rgba(30, 85, 173, 0.16); }
.thesis-strip p span { color: var(--blue); }
.thesis-strip p strong { color: #0f7e9a; }
.thesis-orb { display: grid; place-items: center; width: 70px; height: 70px; border-radius: 50%; background: linear-gradient(140deg, #1bdab8, #407ef0); box-shadow: 0 11px 24px rgba(32, 130, 224, 0.25); }
.thesis-orb span { color: #fff; font-family: Georgia, serif; font-size: 2.2rem; font-weight: 700; }

.section-pad { width: min(1190px, calc(100% - 64px)); margin-right: auto; margin-left: auto; }

.system-section { padding-top: 150px; padding-bottom: 130px; }

.section-intro { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 80px; align-items: end; margin-bottom: 52px; }
.section-intro.narrow { grid-template-columns: 1.2fr 0.8fr; }
.section-intro h2, .method-head h2, .evidence-copy h2, .service-heading h2 { font-size: clamp(2.55rem, 4.2vw, 4.65rem); }
.section-intro h2 strong, .method-head h2 strong, .service-heading h2 strong { color: #177ca5; }
.section-intro > p, .method-head > p { margin: 0 0 8px; color: #536b90; font-size: 0.98rem; line-height: 1.9; }

.system-grid { display: grid; grid-template-columns: 1fr 1fr 220px; gap: 16px; }

.system-card {
  position: relative;
  min-height: 450px;
  padding: 30px;
  overflow: hidden;
  border-radius: 23px;
}

.system-card::after { position: absolute; right: -80px; bottom: -100px; width: 250px; height: 250px; content: ""; border: 1px solid currentColor; border-radius: 50%; opacity: 0.18; }
.system-card.app-card { color: #064173; background: linear-gradient(145deg, #d6f5ff 0%, #e9f6ff 60%, #cfe4ff 100%); }
.system-card.human-card { color: #f4fbff; background: linear-gradient(145deg, #0b3479 0%, #10285a 100%); }
.card-index { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 42px; border-radius: 10px; color: #fff; background: currentColor; font-family: var(--serif); font-size: 1.05rem; }
.human-card .card-index { color: #0d3c80; background: #9be9ff; }
.card-kicker { display: block; margin-bottom: 13px; color: currentColor; font-size: 0.64rem; font-weight: 800; letter-spacing: 0.17em; opacity: 0.76; }
.system-card h3 { position: relative; z-index: 1; margin: 0; font-family: var(--serif); font-size: clamp(1.75rem, 2.4vw, 2.55rem); letter-spacing: -0.035em; line-height: 1.22; }
.system-card p { position: relative; z-index: 1; margin: 21px 0 25px; color: currentColor; font-size: 0.87rem; line-height: 1.75; opacity: 0.78; }
.system-card ul { position: relative; z-index: 1; display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; font-size: 0.75rem; font-weight: 700; }
.system-card li::before { margin-right: 9px; color: var(--aqua); content: "◆"; font-size: 0.55rem; }
.app-card li::before { color: #1685c4; }
.card-arrow { position: absolute; z-index: 1; right: 27px; bottom: 23px; font-size: 1.45rem; opacity: 0.78; }

.system-note { display: flex; flex-direction: column; justify-content: space-between; padding: 28px 25px; color: #fff; border-radius: 23px; background: #0b718d; }
.system-note span { color: #bcfbff; font-size: 0.59rem; font-weight: 800; letter-spacing: 0.13em; }
.system-note p { margin: 20px 0; font-family: var(--serif); font-size: 1.65rem; font-weight: 700; letter-spacing: -0.04em; line-height: 1.25; }
.system-note i { display: block; width: 42px; height: 2px; background: var(--aqua); }
.system-note small { font-size: 0.68rem; line-height: 1.65; opacity: 0.77; }

.method-section { position: relative; padding: 125px 0 130px; color: #fff; background: linear-gradient(130deg, #061a3b 0%, #0a3675 56%, #0b447e 100%); overflow: hidden; }
.method-section::before { position: absolute; top: 2%; left: -18%; width: 60%; height: 90%; content: ""; background: radial-gradient(ellipse, rgba(42, 135, 241, 0.22), transparent 63%); }
.method-radiance { position: absolute; right: -18vw; bottom: -10vw; width: 64vw; height: 64vw; border: 1px solid rgba(143, 228, 255, 0.22); border-radius: 50%; box-shadow: 0 0 0 55px rgba(105, 202, 255, 0.035), 0 0 0 110px rgba(105, 202, 255, 0.027); }
.method-head { position: relative; display: grid; grid-template-columns: 1.13fr 0.87fr; gap: 60px; align-items: end; }
.method-head h2 strong { color: #92edff; }
.method-head > p { color: rgba(230, 246, 255, 0.68); }
.method-rail { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 69px; padding-left: 0; list-style: none; }
.method-rail::before { position: absolute; top: 41px; right: 7%; left: 7%; height: 1px; content: ""; background: linear-gradient(90deg, rgba(117, 222, 255, 0.1), rgba(117, 222, 255, 0.78), rgba(117, 222, 255, 0.1)); }
.method-rail li { position: relative; }
.step-number { position: relative; z-index: 1; display: grid; place-items: center; width: 83px; height: 83px; margin-bottom: 31px; color: #92edff; border: 1px solid rgba(146, 237, 255, 0.7); border-radius: 50%; background: #0a3169; font-family: var(--serif); font-size: 1.35rem; }
.method-rail small { color: var(--aqua); font-size: 0.59rem; font-weight: 800; letter-spacing: 0.14em; }
.method-rail h3 { margin: 11px 0 12px; font-family: var(--serif); font-size: 1.38rem; letter-spacing: -0.03em; line-height: 1.33; }
.method-rail p { margin: 0; color: rgba(230, 246, 255, 0.67); font-size: 0.79rem; line-height: 1.76; }

.inside-section { padding-top: 138px; padding-bottom: 132px; }

.app-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-card { position: relative; display: flex; flex-direction: column; align-items: flex-start; min-height: 338px; padding: 28px; overflow: hidden; color: #0e315c; border: 1px solid #d8e5f7; border-radius: 21px; background: #fff; text-align: left; transition: transform 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease; }
.gallery-card:hover, .gallery-card:focus-visible, .gallery-card.is-selected { color: #e9fbff; border-color: transparent; background: linear-gradient(145deg, #0b3b7e, #0a285a); box-shadow: 0 18px 36px rgba(11, 48, 106, 0.2); transform: translateY(-5px); outline: none; }
.gallery-index { color: #1882c7; font-family: var(--serif); font-size: 1.5rem; font-weight: 700; }
.gallery-card.is-selected .gallery-index, .gallery-card:hover .gallery-index, .gallery-card:focus-visible .gallery-index { color: var(--aqua); }
.gallery-copy { position: relative; z-index: 1; display: grid; gap: 10px; max-width: 60%; margin-top: auto; }
.gallery-copy small { color: currentColor; font-size: 0.58rem; font-weight: 800; letter-spacing: 0.13em; opacity: 0.65; }
.gallery-copy strong { font-family: var(--serif); font-size: 1.38rem; letter-spacing: -0.035em; line-height: 1.26; }
.gallery-copy em { color: currentColor; font-size: 0.72rem; font-style: normal; line-height: 1.65; opacity: 0.74; }
.gallery-card > img { position: absolute; right: 6%; bottom: -35%; width: 42%; border: 5px solid #d7e6f5; border-radius: 22px; box-shadow: 0 18px 35px rgba(6, 32, 79, 0.23); transform: rotate(8deg); transition: transform 300ms ease; }
.gallery-card:hover > img, .gallery-card.is-selected > img { transform: rotate(3deg) translateY(-8px); }

.gallery-focus { display: grid; grid-template-columns: 1.05fr 0.95fr; min-height: 458px; margin-top: 17px; overflow: hidden; color: #e7f7ff; border-radius: 24px; background: linear-gradient(115deg, #09244c 0%, #0b3d78 100%); }
.focus-copy { align-self: center; padding: 58px 64px; }
.focus-copy .eyebrow { color: #8de7ff; }
.focus-copy .eyebrow span { color: var(--aqua); }
.focus-copy h3 { max-width: 470px; margin: 0; color: #fff; font-family: var(--serif); font-size: clamp(2.15rem, 3.5vw, 3.65rem); letter-spacing: -0.04em; line-height: 1.1; }
.focus-copy > p:not(.eyebrow) { max-width: 470px; margin: 23px 0 26px; color: rgba(229, 246, 255, 0.72); font-size: 0.88rem; line-height: 1.85; }
.focus-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.focus-tags span { padding: 7px 10px; color: #a7eaff; border: 1px solid rgba(122, 224, 255, 0.34); border-radius: 999px; background: rgba(6, 24, 54, 0.23); font-size: 0.66rem; }
.focus-device { position: relative; display: grid; place-items: end center; padding-top: 48px; background: radial-gradient(circle at 70% 45%, rgba(66, 167, 255, 0.34), transparent 31%); }
.focus-device::before { position: absolute; right: 5%; bottom: -35%; width: 95%; height: 95%; content: ""; border: 1px solid rgba(141, 231, 255, 0.23); border-radius: 50%; }

.evidence-section { color: #fff; background: #061632; }
.evidence-inner { display: grid; grid-template-columns: 0.84fr 1.16fr; gap: 68px; align-items: center; min-height: 620px; padding-top: 105px; padding-bottom: 105px; }
.evidence-copy h2 { font-size: clamp(2.6rem, 4.25vw, 4.55rem); }
.evidence-copy > p { max-width: 410px; color: rgba(230, 245, 255, 0.7); font-size: 0.89rem; line-height: 1.85; }
.text-link { display: inline-flex; gap: 11px; margin-top: 15px; color: #8de7ff; font-size: 0.79rem; font-weight: 800; }
.evidence-dashboard { padding: 27px; border: 1px solid rgba(136, 220, 255, 0.23); border-radius: 22px; background: linear-gradient(145deg, rgba(25, 73, 139, 0.62), rgba(8, 31, 72, 0.66)); box-shadow: 0 20px 55px rgba(0, 3, 18, 0.24); }
.dashboard-heading { display: grid; gap: 5px; padding-bottom: 22px; border-bottom: 1px solid rgba(166, 228, 255, 0.16); }
.dashboard-heading span { color: var(--aqua); font-size: 0.61rem; font-weight: 800; letter-spacing: 0.15em; }
.dashboard-heading strong { color: #fff; font-family: var(--serif); font-size: 1.52rem; letter-spacing: -0.03em; }
.dashboard-line { padding: 23px 0 18px; }
.line-label { color: #dff5ff; font-size: 0.76rem; font-weight: 700; }
.dashboard-line svg { display: block; width: 100%; margin: 14px 0 4px; }
.dashboard-line .gridline { fill: none; stroke: rgba(176, 222, 255, 0.16); stroke-width: 1; }
.dashboard-line .trend { fill: none; stroke: #29d2c0; stroke-width: 3; }
.dashboard-line circle { fill: #7bdbff; stroke: #0b397a; stroke-width: 4; }
.dashboard-line small { color: rgba(225, 246, 255, 0.54); font-size: 0.65rem; }
.dashboard-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.dashboard-cards div { min-height: 105px; padding: 15px; border-radius: 14px; background: rgba(167, 221, 255, 0.08); }
.dashboard-cards span { display: block; color: rgba(215, 243, 255, 0.63); font-size: 0.62rem; }
.dashboard-cards strong { display: block; margin: 8px 0 4px; color: #87e8ff; font-family: var(--serif); font-size: 1.21rem; }
.dashboard-cards small { display: block; color: rgba(215, 243, 255, 0.5); font-size: 0.6rem; line-height: 1.45; }

.service-section { padding-top: 130px; padding-bottom: 132px; }
.service-heading { max-width: 900px; margin-bottom: 50px; }
.service-grid { display: grid; grid-template-columns: 1fr 1fr 0.64fr; gap: 16px; }
.service-option { display: flex; flex-direction: column; min-height: 415px; padding: 30px; border: 1px solid #d4e2f4; border-radius: 23px; background: #fff; }
.service-option.featured { color: #ecfbff; border-color: #0e5690; background: linear-gradient(145deg, #0d3778, #092752); box-shadow: 0 22px 46px rgba(9, 52, 120, 0.2); }
.service-tag { display: block; margin-bottom: 35px; color: #177ca5; font-size: 0.61rem; font-weight: 800; letter-spacing: 0.15em; }
.featured .service-tag { color: var(--aqua); }
.service-option h3 { margin: 0; font-family: var(--serif); font-size: 1.95rem; letter-spacing: -0.04em; }
.service-option p { min-height: 68px; margin: 15px 0 18px; color: #5f7698; font-size: 0.8rem; line-height: 1.72; }
.featured p { color: rgba(232, 248, 255, 0.7); }
.service-option > strong { display: block; margin-bottom: 20px; color: #0b3c7c; font-family: var(--serif); font-size: 1.75rem; letter-spacing: -0.035em; }
.featured > strong { color: #9cecff; }
.service-option > strong small { display: block; margin-bottom: 4px; color: #6681a9; font-family: var(--sans); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.08em; }
.featured > strong small { color: rgba(218, 246, 255, 0.6); }
.service-option ul { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; color: #254868; font-size: 0.75rem; }
.featured ul { color: rgba(230, 248, 255, 0.87); }
.service-option li::before { margin-right: 8px; color: var(--aqua); content: "✓"; font-weight: 900; }
.plain-action { display: inline-flex; align-items: center; gap: 8px; width: fit-content; padding: 0; margin-top: auto; color: #0b4f9e; border: 0; background: transparent; font-size: 0.76rem; font-weight: 800; }
.featured .plain-action { color: #9beaff; }
.service-aside { display: flex; flex-direction: column; justify-content: flex-end; min-height: 415px; padding: 28px; color: #fff; border-radius: 23px; background: #147b99; }
.service-aside span { color: #a0fdff; font-size: 0.58rem; font-weight: 800; letter-spacing: 0.13em; }
.service-aside p { margin: 17px 0; font-family: var(--serif); font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1.28; }
.service-aside small { color: rgba(235, 254, 255, 0.7); font-size: 0.65rem; line-height: 1.55; }

.closing-section { color: #fff; background: linear-gradient(115deg, #0c326e, #164d97 62%, #178a9b 120%); }
.closing-grid { display: grid; grid-template-columns: 1.14fr 0.86fr; gap: 80px; align-items: end; width: min(1190px, calc(100% - 64px)); min-height: 452px; padding: 98px 0; margin: auto; }
.closing-section h2 { font-size: clamp(2.8rem, 4.9vw, 5.3rem); }
.closing-actions { display: grid; justify-items: start; gap: 26px; }
.closing-actions p { margin: 0; color: rgba(237, 250, 255, 0.74); font-size: 0.81rem; line-height: 1.8; }

.footer { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 32px max(32px, calc((100vw - 1190px) / 2)); color: #496284; background: #eff5fd; }
.footer-brand { display: flex; align-items: center; gap: 9px; }
.footer-brand .brand-logo { width: 138px; }
.footer .brand-mark { width: 30px; height: 30px; border-radius: 9px; }
.footer .brand-mark img { width: 23px; height: 23px; }
.footer-brand strong { color: #0b3a80; font-family: Georgia, serif; font-size: 1.16rem; letter-spacing: 0.08em; }
.footer-brand small { font-size: 0.55rem; font-weight: 800; letter-spacing: 0.12em; }
.footer > p { margin: 0; font-size: 0.67rem; text-align: right; line-height: 1.55; }
.footer nav { display: flex; flex-wrap: wrap; gap: 12px 22px; font-size: 0.7rem; font-weight: 700; }
.footer nav a:hover, .footer nav a:focus-visible { color: var(--blue); }
.service-aside a { color: #e9ffff; text-decoration: underline; text-underline-offset: 3px; }
.site-nav a[aria-current="page"] { color: #fff; }

.preview-toast { position: fixed; z-index: 50; right: 24px; bottom: 24px; max-width: 330px; padding: 14px 17px; color: #ebfbff; border: 1px solid rgba(142, 236, 255, 0.39); border-radius: 13px; background: rgba(5, 31, 71, 0.95); box-shadow: 0 12px 35px rgba(1, 14, 40, 0.25); font-size: 0.76rem; line-height: 1.55; transform: translateY(150%); opacity: 0; transition: transform 250ms ease, opacity 250ms ease; }
.preview-toast.is-visible { transform: translateY(0); opacity: 1; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.8,.2,1); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@keyframes pulse { 50% { box-shadow: 0 0 0 11px rgba(24, 217, 178, 0); } }

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

@media (max-width: 960px) {
  .topbar { width: min(100% - 40px, 760px); padding-top: 20px; }
  .topbar.is-scrolled { padding: 14px 20px; }
  .site-nav { gap: 16px; }
  .site-nav > a { font-size: 0.74rem; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 145px max(20px, calc((100vw - 720px) / 2)) 75px; }
  .hero-copy { padding-top: 14px; }
  .hero-device-wrap { min-height: 530px; margin-top: 21px; transform: none; }
  .phone-main { width: min(245px, 39vw); }
  .signal-top { left: 5%; right: auto; }
  .signal-bottom { right: 5%; }
  .thesis-strip { grid-template-columns: 1fr 1fr 68px; gap: 24px; width: min(720px, calc(100% - 40px)); padding: 28px; }
  .section-pad { width: min(720px, calc(100% - 40px)); }
  .section-intro, .section-intro.narrow, .method-head, .evidence-inner, .closing-grid { grid-template-columns: 1fr; gap: 28px; }
  .system-grid { grid-template-columns: 1fr 1fr; }
  .system-note { min-height: 205px; grid-column: 1 / -1; }
  .method-rail { grid-template-columns: 1fr 1fr; }
  .method-rail::before { right: 25%; left: 25%; }
  .app-gallery { grid-template-columns: 1fr; }
  .gallery-card { min-height: 245px; }
  .gallery-copy { max-width: 66%; }
  .gallery-card > img { width: 30%; bottom: -46%; }
  .gallery-focus { grid-template-columns: 1fr; }
  .focus-copy { padding: 48px; }
  .focus-device { min-height: 380px; }
  .evidence-inner { min-height: auto; }
  .service-grid { grid-template-columns: 1fr 1fr; }
  .service-aside { min-height: 210px; grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .topbar { width: calc(100% - 32px); padding: 15px 0; }
  .topbar .brand-logo { width: 148px; }
  .brand-wordmark { font-size: 1.42rem; }
  .brand-subtitle, .brand-divider { display: none; }
  .menu-toggle { display: grid; gap: 5px; width: 40px; height: 40px; padding: 0; border: 1px solid rgba(174, 225, 255, 0.34); border-radius: 12px; color: #fff; background: rgba(4, 29, 66, 0.33); place-content: center; }
  .menu-toggle span { display: block; width: 16px; height: 1px; background: currentColor; transition: transform 200ms ease; }
  .menu-toggle.is-open span:first-of-type { transform: translateY(3px) rotate(45deg); }
  .menu-toggle.is-open span:last-of-type { transform: translateY(-3px) rotate(-45deg); }
  .site-nav { position: absolute; top: 65px; right: 0; display: grid; width: min(280px, 100%); padding: 15px; border: 1px solid rgba(151, 223, 255, 0.26); border-radius: 17px; background: rgba(7, 31, 70, 0.96); box-shadow: 0 18px 48px rgba(0, 11, 35, 0.28); opacity: 0; pointer-events: none; transform: translateY(-10px); transition: opacity 180ms ease, transform 180ms ease; }
  .site-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .site-nav > a { padding: 11px 8px; font-size: 0.84rem; }
  .site-nav .nav-cta { padding: 11px 13px; }
  .hero { padding: 115px 20px 53px; }
  .hero-grid { background-size: 34px 34px; }
  .hero-orbit { width: 90vw; height: 35vw; }
  .hero h1 { font-size: clamp(2.85rem, 14vw, 4.3rem); }
  .hero-lede { margin: 22px 0 25px; font-size: 0.9rem; line-height: 1.78; }
  .button { min-height: 47px; padding: 0 16px; font-size: 0.79rem; }
  .hero-meta { flex-wrap: wrap; margin-top: 28px; font-size: 0.62rem; }
  .hero-device-wrap { min-height: 450px; margin-top: 0; }
  .phone-main { width: 206px; }
  .stage-label { top: 18px; left: 0; }
  .data-signal { width: 158px; padding: 13px; border-radius: 14px; }
  .data-signal strong { font-size: 0.84rem; }
  .data-signal small { font-size: 0.59rem; }
  .signal-top { top: 105px; left: -8px; }
  .signal-bottom { right: -7px; bottom: 14px; width: 168px; }
  .thesis-strip { grid-template-columns: 1fr 49px; gap: 16px; min-height: 0; padding: 25px 22px; margin-top: -22px; border-radius: 20px; }
  .thesis-strip p { grid-column: 1; font-size: 1.27rem; }
  .thesis-strip p:first-child { padding-bottom: 17px; border-right: 0; border-bottom: 1px solid rgba(30, 85, 173, 0.16); }
  .thesis-orb { grid-row: 1 / span 2; grid-column: 2; align-self: center; width: 46px; height: 46px; }
  .thesis-orb span { font-size: 1.5rem; }
  .section-pad { width: calc(100% - 40px); }
  .system-section { padding-top: 88px; padding-bottom: 78px; }
  .section-intro { margin-bottom: 34px; }
  .section-intro h2, .method-head h2, .evidence-copy h2, .service-heading h2 { font-size: clamp(2.25rem, 11vw, 3.1rem); }
  .section-intro > p, .method-head > p { font-size: 0.86rem; line-height: 1.76; }
  .system-grid { grid-template-columns: 1fr; }
  .system-card { min-height: 370px; padding: 25px; }
  .card-index { margin-bottom: 28px; }
  .system-note { grid-column: auto; }
  .method-section { padding: 82px 0; }
  .method-rail { grid-template-columns: 1fr; gap: 28px; margin-top: 43px; }
  .method-rail::before { top: 8%; right: auto; bottom: 8%; left: 41px; width: 1px; height: auto; background: linear-gradient(rgba(117, 222, 255, 0.15), rgba(117, 222, 255, 0.8), rgba(117, 222, 255, 0.15)); }
  .method-rail li { display: grid; grid-template-columns: 68px 1fr; gap: 16px; }
  .step-number { width: 62px; height: 62px; margin: 0; font-size: 1.1rem; }
  .method-rail h3 { margin-top: 8px; font-size: 1.26rem; }
  .inside-section { padding-top: 87px; padding-bottom: 82px; }
  .gallery-card { min-height: 218px; padding: 22px; }
  .gallery-copy { max-width: 67%; }
  .gallery-copy strong { font-size: 1.16rem; }
  .gallery-card > img { width: 34%; border-width: 4px; }
  .gallery-focus { min-height: 0; border-radius: 20px; }
  .focus-copy { padding: 33px 25px; }
  .focus-copy h3 { font-size: 2.35rem; }
  .focus-device { min-height: 315px; padding-top: 25px; }
  .phone-focus { width: 177px; }
  .evidence-inner { gap: 35px; padding-top: 78px; padding-bottom: 78px; }
  .evidence-dashboard { padding: 17px; }
  .dashboard-heading strong { font-size: 1.25rem; }
  .dashboard-cards { grid-template-columns: 1fr; }
  .dashboard-cards div { min-height: auto; }
  .service-section { padding-top: 84px; padding-bottom: 86px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-option, .service-aside { min-height: 0; }
  .service-aside { grid-column: auto; min-height: 190px; }
  .closing-grid { gap: 34px; width: calc(100% - 40px); min-height: 0; padding: 76px 0; }
  .closing-section h2 { font-size: clamp(2.45rem, 12vw, 3.35rem); }
  .footer { flex-direction: column; align-items: flex-start; padding: 26px 20px; }
  .footer > p { text-align: left; }
  .preview-toast { right: 16px; bottom: 16px; left: 16px; max-width: none; }
}

@media (max-width: 1100px) and (min-width: 641px) {
  .menu-toggle { display: grid; gap: 5px; width: 40px; height: 40px; padding: 0; border: 1px solid rgba(174, 225, 255, 0.34); border-radius: 12px; color: #fff; background: rgba(4, 29, 66, 0.33); place-content: center; }
  .menu-toggle span { display: block; width: 16px; height: 1px; background: currentColor; }
  .menu-toggle.is-open span:first-of-type { transform: translateY(3px) rotate(45deg); }
  .menu-toggle.is-open span:last-of-type { transform: translateY(-3px) rotate(-45deg); }
  .site-nav { position: absolute; top: 72px; right: 0; display: grid; width: min(300px, 100%); padding: 15px; border: 1px solid rgba(151, 223, 255, 0.26); border-radius: 17px; background: rgba(7, 31, 70, 0.96); box-shadow: 0 18px 48px rgba(0, 11, 35, 0.28); opacity: 0; pointer-events: none; transform: translateY(-10px); transition: opacity 180ms ease, transform 180ms ease; }
  .site-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .site-nav > a { padding: 11px 8px; font-size: 0.84rem; }
}