@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url("fonts/be-vietnam-pro-vietnamese-400-normal.woff2") format("woff2");
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}
@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url("fonts/be-vietnam-pro-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 600;
  src: url("fonts/be-vietnam-pro-vietnamese-600-normal.woff2") format("woff2");
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}
@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 600;
  src: url("fonts/be-vietnam-pro-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url("fonts/be-vietnam-pro-vietnamese-700-normal.woff2") format("woff2");
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}
@font-face {
  font-family: "Be Vietnam Pro";
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url("fonts/be-vietnam-pro-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

:root {
  --green-950: #062d20;
  --green-900: #083b29;
  --green-800: #0a4a2f;
  --green-700: #11643e;
  --green-600: #1b7a4d;
  --green-100: #e8f2ec;
  --green-050: #f3f8f4;
  --gold-600: #c7931e;
  --gold-500: #e3ad25;
  --gold-400: #f0c24e;
  --cream: #f5f0e4;
  --paper: #fbfaf6;
  --white: #ffffff;
  --ink: #153127;
  --muted: #637168;
  --line: rgba(11, 72, 47, .14);
  --shadow: 0 24px 70px rgba(7, 46, 34, .12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Be Vietnam Pro", "Segoe UI", Arial, sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: 112px 0; }
.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; top: 12px; left: 12px; z-index: 2000; padding: 10px 16px;
  background: var(--white); color: var(--green-900); border-radius: 8px;
  transform: translateY(-150%); box-shadow: var(--shadow);
}
.skip-link:focus { transform: translateY(0); }

/* Navigation */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 1000; background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid rgba(9, 70, 45, .09); transition: box-shadow .25s, background .25s;
  backdrop-filter: blur(16px);
}
.site-header.scrolled { box-shadow: 0 10px 34px rgba(5, 45, 31, .09); }
.nav-wrap { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: block; flex: 0 0 auto; }
.brand img { width: 180px; height: 68px; object-fit: contain; object-position: left center; }
.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav > a { position: relative; color: #334b40; font-size: 13px; font-weight: 700; white-space: nowrap; }
.main-nav > a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 2px;
  background: var(--gold-500); transition: right .22s;
}
.main-nav > a:hover::after, .main-nav > a:focus-visible::after { right: 0; }
.main-nav .nav-cta {
  display: inline-flex; align-items: center; gap: 8px; color: var(--white); background: var(--green-800);
  padding: 12px 18px; border-radius: 999px; transition: background .2s, transform .2s;
}
.main-nav .nav-cta:hover { background: var(--green-600); transform: translateY(-1px); }
.menu-toggle { display: none; border: 0; background: transparent; width: 46px; height: 46px; padding: 8px; cursor: pointer; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; background: var(--green-900); margin: 6px; transition: .22s; }

/* Hero */
.hero {
  position: relative; min-height: 800px; padding: 150px 0 90px; color: var(--white); overflow: hidden;
  background:
    radial-gradient(circle at 78% 20%, rgba(234, 183, 59, .2), transparent 26%),
    radial-gradient(circle at 68% 92%, rgba(97, 150, 52, .18), transparent 30%),
    linear-gradient(130deg, var(--green-950) 0%, #0b5134 57%, #0c603b 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .055; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.8) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.8) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, transparent, #000 52%, #000);
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 72px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--green-700); font-size: 11px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow > span { width: 28px; height: 2px; background: var(--gold-500); flex: 0 0 auto; }
.eyebrow.light { color: rgba(255,255,255,.74); }
.hero h1, .section-heading h2, .approach-copy h2, .principles-content h2, .contact-copy h2 {
  font-family: "Be Vietnam Pro", "Segoe UI", Arial, sans-serif; letter-spacing: -.045em; line-height: 1.12;
}
.hero h1 { font-size: clamp(52px, 5.9vw, 78px); max-width: 760px; margin: 25px 0 24px; font-weight: 600; }
.hero h1 em { color: var(--gold-400); font-style: normal; }
.hero-copy > p { max-width: 650px; color: rgba(255,255,255,.74); font-size: 17px; margin: 0 0 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; }
.button {
  min-height: 52px; border: 0; border-radius: 999px; padding: 0 24px; display: inline-flex; align-items: center;
  justify-content: center; gap: 13px; font-size: 13px; font-weight: 800; cursor: pointer;
  transition: transform .2s, background .2s, box-shadow .2s;
}
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--green-950); background: var(--gold-400); box-shadow: 0 14px 30px rgba(227, 173, 37, .2); }
.button.primary:hover { background: #ffd46b; }
.button.ghost { color: var(--white); border: 1px solid rgba(255,255,255,.38); }
.button.ghost:hover { background: rgba(255,255,255,.08); }
.button.gold { color: var(--green-950); background: var(--gold-400); }
.button.secondary { color: var(--green-800); background: var(--green-100); }
.button.zalo { color: var(--white); background: #0877d1; }
.button.full { width: 100%; }
.hero-proof { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 60px; border-top: 1px solid rgba(255,255,255,.17); padding-top: 22px; }
.hero-proof > div { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding-right: 22px; }
.hero-proof > div + div { border-left: 1px solid rgba(255,255,255,.15); padding-left: 22px; }
.hero-proof b { color: var(--gold-400); font-size: 11px; }
.hero-proof span, .hero-proof strong { display: block; }
.hero-proof strong { color: var(--white); font-size: 13px; }
.hero-proof span { color: rgba(255,255,255,.5); font-size: 10px; line-height: 1.45; }
.hero-identity { position: relative; }
.hero-identity::before, .hero-identity::after {
  content: ""; position: absolute; border: 1px solid rgba(240, 194, 78, .24); border-radius: 50%;
}
.hero-identity::before { width: 510px; height: 510px; inset: 50% auto auto 50%; transform: translate(-50%, -50%); }
.hero-identity::after { width: 610px; height: 610px; inset: 50% auto auto 50%; transform: translate(-50%, -50%); }
.hero-photo-card {
  position: relative; z-index: 2; margin: 0; aspect-ratio: 4 / 5; max-height: 620px;
  border: 1px solid rgba(255,255,255,.42); border-radius: 34px; overflow: hidden;
  background: var(--green-900); box-shadow: 0 40px 110px rgba(1, 24, 16, .4); transform: rotate(1.25deg);
}
.hero-photo-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 45%, rgba(3, 29, 20, .76) 100%);
}
.hero-photo { width: 100%; height: 100%; object-fit: cover; object-position: 62% center; }
video.hero-photo { background: #082e22; }
.hero-brand-lockup {
  position: absolute; z-index: 2; left: 22px; right: 22px; bottom: 20px; display: grid; gap: 7px;
}
.hero-brand-lockup img {
  width: min(290px, 76%); max-height: 120px; object-fit: contain; object-position: left center;
  background: rgba(255,255,255,.95); border-radius: 14px; padding: 10px 13px;
}
.hero-brand-lockup span { color: rgba(255,255,255,.75); font-size: 9px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.identity-card {
  position: relative; z-index: 2; background: rgba(255,255,255,.98); border: 1px solid rgba(255,255,255,.52);
  border-radius: 34px; padding: 32px 32px 28px; box-shadow: 0 40px 110px rgba(1, 24, 16, .35);
  transform: rotate(1.7deg); overflow: hidden;
}
.identity-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 6px; background: linear-gradient(90deg, var(--green-600), var(--gold-400)); }
.identity-card > p { margin: 0 0 18px; color: #7b857f; font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.identity-card img { width: 100%; max-height: 420px; object-fit: contain; }
.identity-seal {
  position: absolute; right: 22px; bottom: 18px; width: 78px; height: 78px; display: grid; place-content: center;
  text-align: center; color: var(--white); background: var(--green-800); border: 4px solid var(--white);
  border-radius: 50%; box-shadow: 0 6px 18px rgba(7, 46, 34, .18); transform: rotate(-8deg);
}
.identity-seal span { font-size: 7px; letter-spacing: .1em; }
.identity-seal strong { font-size: 19px; line-height: 1; }
.hero-grain { position: absolute; right: -80px; bottom: -40px; width: 570px; height: 350px; opacity: .22; transform: rotate(-13deg); }
.hero-grain::before { content: ""; position: absolute; width: 580px; height: 4px; background: var(--gold-400); border-radius: 99px; top: 184px; left: 5px; transform: rotate(-7deg); transform-origin: left; }
.hero-grain span { position: absolute; width: 90px; height: 36px; background: var(--gold-400); border-radius: 100% 0 100% 0; }
.hero-grain span:nth-child(1) { left: 80px; top: 120px; transform: rotate(24deg); }
.hero-grain span:nth-child(2) { left: 162px; top: 88px; transform: rotate(20deg); }
.hero-grain span:nth-child(3) { left: 250px; top: 64px; transform: rotate(12deg); }
.hero-grain span:nth-child(4) { left: 172px; top: 185px; transform: rotate(198deg); }
.hero-grain span:nth-child(5) { left: 270px; top: 160px; transform: rotate(190deg); }
.hero-grain span:nth-child(6) { left: 372px; top: 145px; transform: rotate(184deg); }
.scroll-cue { position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.46); font-size: 9px; letter-spacing: .16em; text-transform: uppercase; }
.scroll-cue span { width: 38px; height: 1px; background: var(--gold-400); }

/* Intro */
.intro { background: var(--cream); }
.intro-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 110px; align-items: start; }
.section-heading h2, .approach-copy h2, .principles-content h2 { margin: 20px 0 0; font-size: clamp(40px, 4.25vw, 57px); font-weight: 600; }
.intro-copy .lead { margin-top: 0; color: var(--ink); font-size: 20px; font-weight: 600; line-height: 1.55; }
.intro-copy > p:not(.lead) { color: var(--muted); }
.intro-signature { margin-top: 30px; padding-top: 22px; border-top: 1px solid rgba(10, 74, 47, .16); }
.intro-signature span, .intro-signature small { display: block; }
.intro-signature span { color: var(--green-800); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.intro-signature small { color: var(--muted); margin-top: 3px; }

/* Ecosystem tabs */
.ecosystem { background: var(--white); }
.section-heading.centered { max-width: 830px; margin: 0 auto 54px; text-align: center; }
.section-heading.centered .eyebrow { justify-content: center; }
.section-heading.centered p { max-width: 600px; margin: 18px auto 0; color: var(--muted); }
.unit-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 18px 18px 0 0; overflow: hidden; }
.unit-tab { min-height: 110px; padding: 22px 26px; border: 0; border-right: 1px solid var(--line); background: var(--green-050); text-align: left; cursor: pointer; transition: background .2s, color .2s; }
.unit-tab:last-child { border-right: 0; }
.unit-tab span, .unit-tab b, .unit-tab small { display: block; }
.unit-tab span { margin-bottom: 8px; color: var(--gold-600); font-size: 10px; font-weight: 800; }
.unit-tab b { font-size: 16px; }
.unit-tab small { color: var(--muted); font-size: 11px; margin-top: 1px; }
.unit-tab.active { color: var(--white); background: var(--green-800); }
.unit-tab.active small { color: rgba(255,255,255,.58); }
.unit-tab:focus-visible { outline: 3px solid var(--gold-400); outline-offset: -4px; }
.unit-stage { border: 1px solid var(--line); border-top: 0; border-radius: 0 0 var(--radius-lg) var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.unit-panel { display: grid; grid-template-columns: .82fr 1.18fr; min-height: 590px; background: var(--paper); }
.unit-visual { position: relative; padding: 55px; display: flex; flex-direction: column; justify-content: space-between; color: var(--white); overflow: hidden; }
.unit-visual::after { content: ""; position: absolute; width: 430px; height: 430px; left: -180px; bottom: -220px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 60px rgba(255,255,255,.035), 0 0 0 120px rgba(255,255,255,.025); }
.unit-visual.green { background: linear-gradient(145deg, #0b5034, #0a3425); }
.unit-visual.blue { background: linear-gradient(145deg, #176689, #0a3247); }
.unit-visual.gold { background: linear-gradient(145deg, #d4a22d, #8b5d05); }
.unit-index { position: relative; z-index: 1; align-self: flex-start; min-width: 46px; height: 28px; padding: 5px 12px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; font-size: 10px; font-weight: 800; }
.unit-visual img { position: relative; z-index: 1; max-width: 275px; max-height: 200px; object-fit: contain; filter: drop-shadow(0 16px 25px rgba(0,0,0,.2)); }
.unit-visual .nfc-logo { width: 150px; height: 150px; border-radius: 50%; }
.unit-visual > p { position: relative; z-index: 1; margin: 0; color: rgba(255,255,255,.73); font-size: 11px; line-height: 1.55; letter-spacing: .12em; font-weight: 700; }
.unit-visual.photo-visual { min-height: 590px; padding: 0; }
.unit-visual.photo-visual::before {
  content: ""; position: absolute; z-index: 1; inset: 0;
  background: linear-gradient(180deg, rgba(3,31,21,.06) 35%, rgba(3,31,21,.86) 100%);
}
.unit-visual.photo-visual::after { display: none; }
.unit-visual.photo-visual .unit-index { position: absolute; z-index: 3; left: 28px; top: 28px; color: var(--white); background: rgba(5,47,32,.64); backdrop-filter: blur(8px); }
.illustration-note { position: absolute; z-index: 3; right: 28px; top: 30px; color: rgba(255,255,255,.88); font-size: 8px; font-weight: 800; letter-spacing: .14em; text-shadow: 0 1px 8px rgba(0,0,0,.45); }
.unit-visual .unit-scene {
  position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; max-width: none; max-height: none;
  object-fit: cover; object-position: center; filter: none;
}
.unit-photo-caption { position: absolute; z-index: 2; left: 30px; right: 30px; bottom: 30px; display: grid; gap: 14px; }
.unit-photo-caption .company-logo { width: min(220px, 78%); max-width: none; max-height: 126px; object-fit: contain; object-position: left center; filter: none; background: rgba(255,255,255,.95); border-radius: 13px; padding: 9px 12px; }
.unit-photo-caption p { margin: 0; color: rgba(255,255,255,.88); font-size: 10px; line-height: 1.6; letter-spacing: .12em; font-weight: 700; }
.unit-photo-caption.text-only p { font-size: 12px; }
.unit-content { padding: 64px 66px 54px; display: flex; flex-direction: column; justify-content: center; }
.unit-label { margin: 0; color: var(--green-700); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.unit-content h3 { margin: 11px 0 16px; max-width: 630px; font-size: 34px; line-height: 1.25; letter-spacing: -.03em; }
.unit-content > p:not(.unit-label) { max-width: 660px; color: var(--muted); font-size: 14px; }
.unit-content ul { list-style: none; margin: 24px 0; padding: 8px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.unit-content li { display: grid; grid-template-columns: 106px 1fr; gap: 16px; padding: 13px 0; }
.unit-content li + li { border-top: 1px dashed rgba(11, 72, 47, .11); }
.unit-content li b { color: var(--green-800); font-size: 13px; }
.unit-content li span { color: var(--muted); font-size: 12px; }
.scope-note { color: var(--green-800); background: var(--green-100); border-left: 3px solid var(--green-600); padding: 12px 14px; font-size: 11px; font-weight: 700; line-height: 1.45; }
.scope-note.warning { color: #6a4b0c; background: #f8e8ba; border-left-color: var(--gold-600); }
.scope-note.warning span { font-weight: 800; }

.unit-visual.brand-visual { min-height: 590px; justify-content: space-between; }
.brand-visual-core { position: relative; z-index: 2; margin-block: auto; display: grid; justify-items: start; gap: 24px; }
.brand-visual-core .company-logo { width: min(320px, 92%); max-width: none; max-height: 200px; object-fit: contain; object-position: left center; filter: none; background: rgba(255,255,255,.97); border-radius: 18px; padding: 16px 20px; }
.brand-visual-core .nfc-logo { width: 180px; height: 180px; max-width: none; max-height: none; object-fit: cover; filter: none; border: 8px solid rgba(255,255,255,.94); box-shadow: 0 20px 45px rgba(0,0,0,.2); }
.brand-visual-core p { margin: 0; color: rgba(255,255,255,.88); font-size: 12px; line-height: 1.65; letter-spacing: .12em; font-weight: 800; }
.visual-source { position: relative; z-index: 2; color: rgba(255,255,255,.55); font-size: 9px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }

/* Real-world drone media */
.drone-showcase { color: var(--white); background: linear-gradient(145deg, #073223, #0b5134); overflow: hidden; }
.drone-heading { max-width: 850px; margin-bottom: 48px; }
.drone-heading h2 { color: var(--white); }
.drone-heading > p { max-width: 720px; margin: 18px 0 0; color: rgba(255,255,255,.62); }
.drone-media-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.drone-media-card { margin: 0; overflow: hidden; color: var(--ink); background: var(--white); border-radius: 24px; box-shadow: 0 28px 68px rgba(0,0,0,.2); }
.drone-media-card video { width: 100%; height: 560px; display: block; object-fit: cover; background: #051f17; }
.drone-media-card figcaption { padding: 28px 30px 30px; }
.drone-media-card figcaption > span { color: var(--gold-600); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.drone-media-card h3 { margin: 10px 0 8px; font-size: 25px; line-height: 1.25; letter-spacing: -.025em; }
.drone-media-card p { margin: 0; color: var(--muted); font-size: 12px; }
.drone-photo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; margin-top: 26px; }
.drone-photo-grid figure { position: relative; margin: 0; min-height: 320px; overflow: hidden; background: var(--white); border: 1px solid rgba(255,255,255,.2); border-radius: 22px; }
.drone-photo-grid img { width: 100%; height: 320px; object-fit: cover; }
.drone-photo-grid figure:first-child img { object-fit: contain; padding: 16px; }
.drone-photo-grid figcaption { position: absolute; left: 16px; right: 16px; bottom: 16px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 13px 16px; color: var(--white); background: rgba(4,34,24,.84); border-radius: 13px; backdrop-filter: blur(10px); }
.drone-photo-grid b, .drone-photo-grid span { font-size: 11px; }
.drone-photo-grid span { color: rgba(255,255,255,.62); }
.drone-service-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 26px; overflow: hidden; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.13); border-radius: 20px; }
.drone-service-strip > div { min-height: 185px; padding: 28px; display: grid; align-content: start; background: rgba(255,255,255,.055); }
.drone-service-strip b { color: var(--gold-400); font-size: 10px; letter-spacing: .12em; }
.drone-service-strip strong { margin: 28px 0 9px; font-size: 21px; }
.drone-service-strip span { color: rgba(255,255,255,.56); font-size: 12px; }
.drone-cta { margin-top: 30px; padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; gap: 30px; background: rgba(0,0,0,.16); border: 1px solid rgba(255,255,255,.12); border-radius: 20px; }
.drone-cta p { margin: 0; max-width: 660px; color: rgba(255,255,255,.68); font-size: 13px; }

/* Approach */
.approach { position: relative; color: var(--white); background: var(--green-950); overflow: hidden; }
.approach::before { content: ""; position: absolute; right: -180px; top: -260px; width: 720px; height: 720px; border: 1px solid rgba(240,194,78,.11); border-radius: 50%; box-shadow: 0 0 0 80px rgba(240,194,78,.025), 0 0 0 160px rgba(240,194,78,.018); }
.approach-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .86fr 1.14fr; gap: 110px; align-items: center; }
.approach-copy h2 { color: var(--white); }
.approach-copy > p { color: rgba(255,255,255,.6); margin: 22px 0 32px; }
.journey-list { list-style: none; margin: 0; padding: 0; counter-reset: journey; }
.journey-list li { display: grid; grid-template-columns: 76px 1fr; gap: 20px; padding: 23px 0; border-top: 1px solid rgba(255,255,255,.14); }
.journey-list li:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.journey-list > li > span { color: var(--gold-400); font-size: 22px; font-weight: 600; }
.journey-list b { display: block; font-size: 17px; }
.journey-list p { margin: 4px 0 0; color: rgba(255,255,255,.55); font-size: 13px; }

/* Values */
.values { background: var(--cream); }
.values-top { display: grid; grid-template-columns: 1.1fr .9fr; gap: 90px; align-items: end; margin-bottom: 54px; }
.values-top > p { margin: 0 0 8px; color: var(--muted); }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.value-grid article { position: relative; min-height: 285px; padding: 36px 30px; overflow: hidden; }
.value-grid article + article { border-left: 1px solid var(--line); }
.value-grid article::after { content: ""; position: absolute; right: -55px; bottom: -70px; width: 150px; height: 150px; border-radius: 50%; background: var(--green-050); }
.value-grid span { position: relative; z-index: 1; color: var(--gold-600); font-size: 12px; font-weight: 800; }
.value-grid h3 { position: relative; z-index: 1; margin: 45px 0 12px; font-size: 27px; letter-spacing: -.03em; }
.value-grid p { position: relative; z-index: 1; color: var(--muted); font-size: 13px; }
.culture-panel { margin-top: 28px; display: grid; grid-template-columns: .7fr 1.1fr 1.5fr .85fr; gap: 1px; background: rgba(10,74,47,.12); border: 1px solid rgba(10,74,47,.12); border-radius: 16px; overflow: hidden; }
.culture-panel > * { margin: 0; min-height: 78px; padding: 18px; display: flex; align-items: center; gap: 11px; background: rgba(255,255,255,.72); font-size: 11px; }
.culture-panel > p { color: var(--green-800); font-weight: 800; letter-spacing: .1em; }
.culture-panel b { color: var(--gold-600); }

/* Principles */
.principles { background: var(--white); }
.principles-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 110px; align-items: center; }
.principles-visual { position: relative; min-height: 540px; padding: 54px; color: var(--white); background: linear-gradient(150deg, var(--green-700), var(--green-950)); border-radius: var(--radius-lg); display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.principles-visual::before { content: ""; position: absolute; right: -100px; bottom: -110px; width: 390px; height: 390px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 60px rgba(255,255,255,.035), 0 0 0 120px rgba(255,255,255,.025); }
.principles-visual > span { position: relative; z-index: 1; color: var(--gold-400); font-size: 128px; line-height: 1; font-weight: 600; letter-spacing: -.08em; }
.principles-visual > p { position: relative; z-index: 1; margin: 0; font-size: 17px; font-weight: 800; letter-spacing: .1em; line-height: 1.5; }
.principles-content h2 { margin-bottom: 27px; }
.principle-list { counter-reset: principle; }
.principle-list > div { position: relative; padding: 20px 0 20px 52px; border-top: 1px solid var(--line); counter-increment: principle; }
.principle-list > div:last-child { border-bottom: 1px solid var(--line); }
.principle-list > div::before { content: counter(principle, decimal-leading-zero); position: absolute; left: 0; top: 21px; color: var(--gold-600); font-size: 11px; font-weight: 800; }
.principle-list b { font-size: 15px; }
.principle-list p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }

/* Contact */
.contact { color: var(--white); background: linear-gradient(130deg, #0b5134, var(--green-950)); padding: 92px 0; }
.contact-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.contact-copy h2 { margin: 20px 0; font-size: clamp(40px, 4.4vw, 57px); font-weight: 600; }
.contact-copy > p { color: rgba(255,255,255,.62); }
.contact-promise { margin-top: 32px; display: grid; gap: 10px; }
.contact-promise span { color: rgba(255,255,255,.72); font-size: 12px; }
.contact-promise b { color: var(--gold-400); margin-right: 10px; }
.contact-form { padding: 38px; color: var(--ink); background: var(--white); border-radius: var(--radius-lg); box-shadow: 0 28px 75px rgba(0,0,0,.25); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form label { display: grid; gap: 7px; margin-bottom: 15px; color: var(--ink); font-size: 11px; font-weight: 800; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; border: 1px solid #dce4df; background: #fafbf9; border-radius: 10px; padding: 13px 14px; color: var(--ink); outline: none; transition: border .2s, box-shadow .2s; }
.contact-form textarea { resize: vertical; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--green-600); box-shadow: 0 0 0 3px rgba(27,122,77,.1); }
.contact-form .invalid { border-color: #b44a43; }
.form-note { margin: 12px 0 0; color: #79857e; font-size: 10px; line-height: 1.45; }
.form-status { min-height: 20px; margin-top: 8px; color: var(--green-700); font-size: 12px; font-weight: 700; }
.message-result { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.message-result[hidden] { display: none; }
.message-result textarea { min-height: 172px; color: #274238; background: var(--green-050); }
.result-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* Direct contact */
.direct-contact { display: grid; gap: 11px; margin-top: 30px; }
.direct-contact a {
  display: grid; grid-template-columns: 88px 1fr; gap: 2px 16px; padding: 16px 18px;
  border: 1px solid rgba(255,255,255,.14); border-radius: 15px; background: rgba(255,255,255,.055);
  transition: transform .2s, background .2s, border-color .2s;
}
.direct-contact a:hover { transform: translateX(3px); background: rgba(255,255,255,.09); border-color: rgba(240,194,78,.38); }
.direct-contact b { grid-row: 1 / 3; align-self: center; color: var(--gold-400); font-size: 10px; letter-spacing: .11em; text-transform: uppercase; }
.direct-contact strong { color: var(--white); font-size: 15px; }
.direct-contact span { color: rgba(255,255,255,.5); font-size: 10px; }

/* FAQ */
.faq { background: var(--cream); }
.faq-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 24px 52px 24px 0; list-style: none; cursor: pointer; font-size: 15px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 6px; top: 18px; color: var(--gold-600); font-size: 26px; font-weight: 400; transition: transform .2s; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list p { margin: -8px 48px 24px 0; color: var(--muted); font-size: 13px; }

/* Legal disclosure */
.legal { padding: 38px 0; color: var(--ink); background: #e9eee9; border-top: 1px solid var(--line); }
.legal-grid { display: grid; grid-template-columns: 1fr 1.45fr 1.1fr; gap: 38px; }
.legal-grid > div, .legal-grid > details { display: grid; align-content: start; gap: 5px; }
.legal-grid strong, .legal-grid summary { color: var(--green-800); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.legal-grid span, .legal-grid p { margin: 0; color: #52665b; font-size: 10px; line-height: 1.55; }
.legal-grid summary { cursor: pointer; }
.legal-grid details p { margin-top: 9px; }
.legal-links a { width: fit-content; color: #52665b; font-size: 10px; text-decoration: underline; text-decoration-color: rgba(10,74,47,.25); text-underline-offset: 3px; }
.legal-links a:hover { color: var(--green-700); text-decoration-color: currentColor; }

/* Mobile contact bar */
.mobile-actions { display: none; }

/* Footer */
.site-footer { color: var(--white); background: #041d15; }
.footer-main { padding: 70px 0 50px; display: grid; grid-template-columns: 1.4fr .7fr 1.05fr .7fr; gap: 50px; }
.footer-brand img { width: 230px; max-height: 160px; object-fit: contain; object-position: left center; background: var(--white); border-radius: 14px; padding: 12px; }
.footer-brand p { max-width: 340px; color: rgba(255,255,255,.48); font-size: 12px; }
.footer-links { display: grid; align-content: start; gap: 9px; }
.footer-links strong { margin-bottom: 7px; color: var(--gold-400); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.footer-links a { color: rgba(255,255,255,.5); font-size: 12px; }
.footer-links a:hover { color: var(--white); }
.footer-bottom { min-height: 72px; border-top: 1px solid rgba(255,255,255,.1); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: rgba(255,255,255,.34); font-size: 10px; }

/* Policy and utility pages */
.policy-page { background: var(--cream); }
.policy-header { position: sticky; z-index: 50; top: 0; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.policy-nav { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.policy-nav > a:first-child { display: block; }
.policy-nav img { width: 172px; height: 62px; object-fit: contain; object-position: left center; }
.policy-main { padding: 74px 0 100px; }
.policy-article { max-width: 900px; padding: 64px 72px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.policy-article h1 { margin: 20px 0 18px; color: var(--green-950); font-size: clamp(42px, 6vw, 64px); line-height: 1.1; letter-spacing: -.045em; }
.policy-lead { margin: 0 0 48px; color: var(--muted); font-size: 17px; font-weight: 600; }
.policy-article section { padding: 28px 0; border-top: 1px solid var(--line); }
.policy-article h2 { margin: 0 0 11px; color: var(--green-800); font-size: 19px; letter-spacing: -.02em; }
.policy-article p, .policy-article li { color: #52665b; font-size: 13px; }
.policy-article p { margin: 8px 0; }
.policy-article ul { margin: 10px 0 0; padding-left: 22px; }
.policy-article a { color: var(--green-700); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.policy-footer { color: rgba(255,255,255,.58); background: var(--green-950); }
.policy-footer .container { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 11px; }
.policy-footer a { color: var(--gold-400); font-weight: 700; }
.not-found-page { min-height: 100vh; color: var(--white); background: radial-gradient(circle at 70% 20%, rgba(240,194,78,.18), transparent 30%), linear-gradient(140deg, var(--green-950), #0b5b39); }
.not-found-main { min-height: 100vh; padding: 40px 20px; display: grid; place-items: center; }
.not-found-card { width: min(620px, 100%); padding: 55px; text-align: center; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); border-radius: 30px; box-shadow: 0 35px 90px rgba(0,0,0,.24); backdrop-filter: blur(16px); }
.not-found-card img { width: min(250px, 78%); margin: 0 auto 28px; padding: 10px 14px; background: var(--white); border-radius: 14px; }
.not-found-card > span { display: block; color: var(--gold-400); font-size: 84px; font-weight: 700; line-height: 1; letter-spacing: -.06em; }
.not-found-card h1 { margin: 20px 0 10px; font-size: 34px; line-height: 1.2; }
.not-found-card p { margin: 0 0 28px; color: rgba(255,255,255,.64); }

@media (max-width: 1040px) {
  .main-nav { gap: 19px; }
  .hero-grid { gap: 38px; }
  .identity-card { padding: 26px 24px; }
  .intro-grid, .approach-grid, .principles-grid, .contact-panel { gap: 64px; }
  .unit-content { padding: 52px 46px; }
  .culture-panel { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-main > div:last-child { display: none; }
}

@media (max-width: 860px) {
  .section { padding: 88px 0; }
  .nav-wrap { min-height: 78px; }
  .brand img { width: 150px; height: 58px; }
  .menu-toggle { display: block; position: relative; z-index: 1002; }
  .main-nav { position: fixed; inset: 0; z-index: 1001; flex-direction: column; justify-content: center; gap: 0; background: var(--white); transform: translateX(100%); transition: transform .3s ease; }
  .main-nav.open { transform: translateX(0); }
  .main-nav > a:not(.nav-cta) { padding: 12px; color: var(--green-900); font-size: 21px; }
  .main-nav > a:not(.nav-cta)::after { display: none; }
  .main-nav .nav-cta { margin-top: 20px; }
  .menu-open .menu-toggle span:nth-child(2) { transform: translateY(8px) rotate(45deg); }
  .menu-open .menu-toggle span:nth-child(3) { opacity: 0; }
  .menu-open .menu-toggle span:nth-child(4) { transform: translateY(-8px) rotate(-45deg); }
  .hero { min-height: 0; padding: 130px 0 82px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-copy .eyebrow, .hero-actions { justify-content: center; }
  .hero-copy > p { margin-inline: auto; }
  .hero-identity { width: min(590px, 90%); margin: 20px auto 0; }
  .hero-proof { text-align: left; }
  .hero-identity::before { width: 440px; height: 440px; }
  .hero-identity::after { width: 520px; height: 520px; }
  .intro-grid, .approach-grid, .principles-grid, .contact-panel, .values-top, .faq-grid { grid-template-columns: 1fr; }
  .faq-grid { gap: 40px; }
  .unit-tabs { grid-template-columns: 1fr; border-radius: 18px 18px 0 0; }
  .unit-tab { min-height: 84px; border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 34px 1fr; align-content: center; column-gap: 8px; }
  .unit-tab:last-child { border-bottom: 0; }
  .unit-tab span { grid-row: 1 / 3; align-self: center; margin: 0; }
  .unit-panel { grid-template-columns: 1fr; }
  .unit-visual { min-height: 380px; }
  .unit-visual.brand-visual { min-height: 420px; }
  .unit-visual.photo-visual { min-height: 460px; }
  .drone-media-card video { height: 500px; }
  .drone-service-strip { grid-template-columns: 1fr; }
  .drone-service-strip > div { min-height: 0; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .value-grid article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .value-grid article:nth-child(4) { border-top: 1px solid var(--line); }
  .values-top { gap: 20px; }
  .principles-visual { min-height: 380px; }
}

@media (max-width: 760px) {
  :root { --container: min(100% - 28px, 1180px); }
  html { scroll-padding-top: 78px; }
  body { padding-bottom: 66px; }
  .section { padding: 72px 0; }
  .hero { padding-top: 116px; }
  .hero h1 { font-size: 43px; }
  .hero-copy > p { font-size: 15px; }
  .hero-proof { grid-template-columns: 1fr; gap: 14px; margin-top: 40px; }
  .hero-proof > div { padding: 0; }
  .hero-proof > div + div { border-left: 0; border-top: 1px solid rgba(255,255,255,.14); padding: 14px 0 0; }
  .hero-identity { width: 100%; }
  .hero-photo-card { aspect-ratio: 5 / 4; max-height: 510px; transform: none; }
  .hero-photo { object-position: 65% center; }
  .hero-brand-lockup { left: 14px; right: 14px; bottom: 13px; }
  .hero-brand-lockup img { width: min(250px, 74%); }
  .identity-card { border-radius: 22px; transform: none; }
  .identity-seal { width: 66px; height: 66px; }
  .hero-identity::before, .hero-identity::after, .scroll-cue { display: none; }
  .section-heading h2, .approach-copy h2, .principles-content h2, .contact-copy h2 { font-size: 37px; }
  .intro-grid { gap: 36px; }
  .unit-stage { border-radius: 0 0 20px 20px; }
  .unit-visual { min-height: 320px; padding: 34px 28px; }
  .unit-visual.brand-visual { min-height: 360px; }
  .unit-visual.photo-visual { min-height: 390px; padding: 0; }
  .unit-visual.photo-visual .unit-index { left: 20px; top: 20px; }
  .illustration-note { right: 20px; top: 22px; }
  .unit-photo-caption { left: 20px; right: 20px; bottom: 20px; }
  .unit-visual img { max-width: 230px; max-height: 160px; }
  .unit-visual .nfc-logo { width: 120px; height: 120px; }
  .unit-content { padding: 38px 24px; }
  .unit-content h3 { font-size: 28px; }
  .unit-content li { grid-template-columns: 1fr; gap: 3px; }
  .drone-media-grid, .drone-photo-grid { grid-template-columns: 1fr; }
  .drone-media-card video { height: min(620px, 126vw); }
  .drone-photo-grid figure, .drone-photo-grid img { min-height: 0; height: 280px; }
  .drone-photo-grid figcaption { align-items: flex-start; flex-direction: column; gap: 2px; }
  .drone-cta { align-items: stretch; flex-direction: column; padding: 24px; }
  .approach-grid, .principles-grid, .contact-panel { gap: 46px; }
  .journey-list li { grid-template-columns: 50px 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .value-grid article { min-height: 230px; }
  .value-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .culture-panel { grid-template-columns: 1fr; }
  .principles-visual { min-height: 330px; padding: 34px; }
  .principles-visual > span { font-size: 100px; }
  .contact-form { padding: 27px 20px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .result-actions { grid-template-columns: 1fr; }
  .direct-contact a { grid-template-columns: 72px 1fr; }
  .legal-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { padding: 22px 0; flex-direction: column; align-items: flex-start; justify-content: center; gap: 2px; }
  .footer-bottom p { margin: 0; }
  .mobile-actions {
    position: fixed; z-index: 999; inset: auto 0 0; min-height: 66px; display: grid; grid-template-columns: repeat(3, 1fr);
    color: var(--white); background: rgba(4,29,21,.98); border-top: 1px solid rgba(255,255,255,.12); box-shadow: 0 -10px 30px rgba(3,29,20,.22);
  }
  .mobile-actions a { min-width: 0; display: flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 4px; font-size: 10px; font-weight: 800; }
  .mobile-actions a + a { border-left: 1px solid rgba(255,255,255,.1); }
  .mobile-actions span { color: var(--gold-400); font-size: 14px; }
  .policy-nav { min-height: 74px; }
  .policy-nav img { width: 142px; height: 54px; }
  .policy-nav .button { min-height: 44px; padding: 0 17px; }
  .policy-main { padding: 34px 0 70px; }
  .policy-article { padding: 38px 22px; border-radius: 20px; }
  .policy-article h1 { font-size: 39px; }
  .policy-lead { margin-bottom: 34px; font-size: 15px; }
  .policy-article section { padding: 23px 0; }
  .policy-footer .container { padding: 19px 0; align-items: flex-start; flex-direction: column; justify-content: center; gap: 3px; }
  .not-found-card { padding: 40px 22px; }
  .not-found-card > span { font-size: 68px; }
  .not-found-card h1 { font-size: 29px; }
}

@media (max-width: 430px) {
  .hero h1 { font-size: 38px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .identity-card { padding: 22px 16px; }
  .identity-seal { right: 10px; bottom: 9px; transform: scale(.86) rotate(-8deg); }
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
}

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