/* ===========================================================
   StudioBREN — Enterprise AI Content Infrastructure
   Design System v1.0
   =========================================================== */

/* --- Font (한글 Pretendard + 영문 Geist 대용 system stack) --- */
@font-face {
  font-family: 'Pretendard Variable';
  font-weight: 45 920;
  font-style: normal;
  font-display: swap;
  src: url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/woff2/PretendardVariable.woff2') format('woff2-variations');
}

/* === Tokens === */
:root {
  /* Brand colors */
  --c-black: #0A0A0A;
  --c-ink: #111418;
  --c-ink-2: #1f242c;
  --c-text: #1a1d22;
  --c-text-soft: #4a5260;
  --c-text-muted: #7a8290;
  --c-line: #e8eaef;
  --c-line-strong: #d6dae2;
  --c-bg: #ffffff;
  --c-bg-soft: #fafbfc;
  --c-bg-tint: #f4f5f7;

  /* Accent — usage strictly limited */
  --c-navy: #1B2A4E;       /* Enterprise / Gov */
  --c-navy-deep: #0f1a35;
  --c-teal: #00B8A9;       /* Studio / Creative — sparingly */
  --c-teal-soft: #d6f5f1;

  /* Typography */
  --ff-display: 'Pretendard Variable', -apple-system, 'Helvetica Neue', 'Arial', sans-serif;
  --ff-body: 'Pretendard Variable', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --ff-mono: 'SF Mono', 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;

  /* Scale */
  --t-xs: 11px;
  --t-sm: 13px;
  --t-base: 15px;
  --t-lg: 17px;
  --t-xl: 20px;
  --t-2xl: 26px;
  --t-3xl: 34px;
  --t-4xl: 46px;
  --t-5xl: 62px;
  --t-6xl: 84px;

  /* Layout */
  --w-container: 1240px;
  --w-narrow: 880px;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-1: 0 1px 2px rgba(10, 10, 10, 0.04);
  --shadow-2: 0 2px 4px rgba(10, 10, 10, 0.04), 0 8px 24px rgba(10, 10, 10, 0.04);
  --shadow-3: 0 4px 8px rgba(10, 10, 10, 0.05), 0 16px 40px rgba(10, 10, 10, 0.06);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: var(--t-base);
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  font-feature-settings: "kern" 1, "calt" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; padding: 0; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* skip link */
.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--c-black); color: #fff; padding: 10px 14px; z-index: 9999;
}
.skip:focus { left: 8px; top: 8px; }

/* === Layout === */
.container { width: 100%; max-width: var(--w-container); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--w-narrow); }

.section { padding: 120px 0; position: relative; }
.section--tight { padding: 80px 0; }
.section--alt { background: var(--c-bg-soft); }
.section--dark { background: var(--c-ink); color: #e8eaef; }

/* === Grain (subtle) === */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 1;
  opacity: 0.025; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/></svg>");
}

/* === Topbar === */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.topbar.is-scrolled { border-bottom-color: var(--c-line); }
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}

/* Brand logo */
.brand {
  display: inline-flex; align-items: baseline; gap: 0;
  letter-spacing: -0.01em;
  position: relative;
}
.brand__studio {
  font-family: var(--ff-display);
  font-weight: 300;
  font-size: 19px;
  color: var(--c-text);
  letter-spacing: 0;
}
.brand__bren {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 19px;
  color: var(--c-black);
  letter-spacing: -0.02em;
}
.brand__dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--c-teal);
  margin-left: 5px; align-self: flex-start;
  transform: translateY(2px);
}
.brand__tag {
  display: inline-block;
  margin-left: 14px; padding-left: 14px;
  border-left: 1px solid var(--c-line);
  font-size: 12px; color: var(--c-text-muted);
  letter-spacing: 0.02em;
}
@media (max-width: 720px) { .brand__tag { display: none; } }

/* nav */
.nav { display: flex; gap: 4px; align-items: center; }
.nav__link {
  display: inline-flex; align-items: center;
  padding: 8px 14px; font-size: 14px; color: var(--c-text-soft);
  font-weight: 450;
  border-radius: var(--radius-sm);
  transition: color .15s var(--ease), background .15s var(--ease);
}
.nav__link:hover { color: var(--c-black); background: var(--c-bg-tint); }
@media (max-width: 980px) { .nav { display: none; } }

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

/* Hamburger */
.hamburger {
  width: 40px; height: 40px; display: none;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-line);
}
.hamburger span {
  display: block; width: 16px; height: 1.5px; background: var(--c-black);
  position: relative; transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.hamburger span + span { margin-top: 4px; }
@media (max-width: 980px) { .hamburger { display: inline-flex; } }

.mobile {
  position: absolute; top: 64px; left: 0; right: 0;
  background: #fff; border-bottom: 1px solid var(--c-line);
  padding: 12px 24px 20px;
  display: flex; flex-direction: column; gap: 4px;
}
.mobile[hidden] { display: none !important; }
@media (min-width: 981px) { .mobile { display: none !important; } }
.mobile__link {
  padding: 12px 8px; font-size: 16px; color: var(--c-text);
  border-radius: var(--radius-sm);
}
.mobile__link:hover { background: var(--c-bg-tint); }
.mobile .btn { margin-top: 10px; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 14px; font-weight: 600;
  letter-spacing: -0.005em;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: transform .12s var(--ease), background .15s var(--ease), color .15s var(--ease), border-color .15s var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.btn--primary {
  background: var(--c-black); color: #fff;
  border-color: var(--c-black);
}
.btn--primary:hover { background: #000; transform: translateY(-1px); }
.btn--ghost {
  background: transparent; color: var(--c-text);
  border-color: var(--c-line-strong);
}
.btn--ghost:hover { background: var(--c-bg-tint); border-color: var(--c-text-soft); }
.btn--ghost-on-dark {
  background: transparent; color: #e8eaef;
  border-color: rgba(255, 255, 255, 0.2);
}
.btn--ghost-on-dark:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.4); }
.btn--white {
  background: #fff; color: var(--c-black);
}
.btn--white:hover { background: #f0f1f3; }
.btn--lg { padding: 14px 26px; font-size: 15px; }
.btn .arr { transition: transform .2s var(--ease); }
.btn:hover .arr { transform: translateX(3px); }

/* === Hero === */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}
.hero__bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(27, 42, 78, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 42, 78, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 80%);
}
.hero__inner { position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 8px;
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--c-text-soft);
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 100px;
  box-shadow: var(--shadow-1);
}
.eyebrow__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-teal);
  box-shadow: 0 0 0 4px rgba(0, 184, 169, 0.15);
}

.hero__title {
  margin-top: 28px;
  font-family: var(--ff-display);
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--c-black);
}
.hero__title em {
  font-style: normal;
  color: var(--c-teal);
}
.hero__title .thin {
  font-weight: 300;
  color: var(--c-text-soft);
  letter-spacing: -0.025em;
}

.hero__desc {
  margin-top: 28px;
  max-width: 680px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--c-text-soft);
}
.hero__desc strong { color: var(--c-text); font-weight: 600; }

.hero__cta {
  margin-top: 36px;
  display: flex; gap: 12px; flex-wrap: wrap;
}

.hero__metrics {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
@media (max-width: 820px) { .hero__metrics { grid-template-columns: repeat(2, 1fr); } }
.metric {
  padding: 24px 22px;
  border-right: 1px solid var(--c-line);
  position: relative;
}
.metric:last-child { border-right: none; }
@media (max-width: 820px) {
  .metric:nth-child(2) { border-right: none; }
  .metric:nth-child(1), .metric:nth-child(2) { border-bottom: 1px solid var(--c-line); }
}
.metric__val {
  font-family: var(--ff-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-black);
  line-height: 1.1;
}
.metric__val .unit { font-size: 16px; font-weight: 500; color: var(--c-text-soft); margin-left: 2px; }
.metric__lbl {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-muted);
}

.hero__trust {
  margin-top: 24px;
  display: flex; flex-wrap: wrap; gap: 8px;
  font-size: 12px; color: var(--c-text-muted);
}
.trustBadge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: var(--c-bg-tint);
  border-radius: 100px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}
.trustBadge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--c-navy); }

/* === Logo Row === */
.logoStrip {
  margin-top: 80px;
  padding-top: 36px;
  border-top: 1px solid var(--c-line);
}
.logoStrip__label {
  text-align: center;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}
.logoStrip__row {
  margin-top: 24px;
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 20px 40px;
}
.logoPill {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--c-text-soft);
  letter-spacing: -0.01em;
  opacity: 0.85;
  transition: opacity .2s var(--ease), color .2s var(--ease);
}
.logoPill:hover { opacity: 1; color: var(--c-text); }

/* === Section heads === */
.section__head { max-width: 760px; }
.section__head--center { margin: 0 auto; text-align: center; }
.section__kicker {
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--c-navy);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.section--dark .section__kicker { color: var(--c-teal); }
.section__title {
  margin-top: 14px;
  font-family: var(--ff-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--c-black);
}
.section--dark .section__title { color: #fff; }
.section__sub {
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text-soft);
}
.section--dark .section__sub { color: #b7bbc4; }

/* === 3-Tier Brand Architecture === */
.arch {
  margin-top: 64px;
  display: grid;
  gap: 24px;
}
.arch__row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
  border-top: 1px solid var(--c-line);
}
.arch__row:last-child { border-bottom: 1px solid var(--c-line); }
@media (max-width: 760px) { .arch__row { grid-template-columns: 1fr; gap: 12px; } }
.arch__tier {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  padding-top: 4px;
}
.arch__name {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.02em;
  color: var(--c-black);
}
.arch__desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
  max-width: 620px;
}
.arch__verticals {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
@media (max-width: 1000px) { .arch__verticals { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px)  { .arch__verticals { grid-template-columns: 1fr; } }
.vert {
  padding: 16px 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}
.vert:hover { border-color: var(--c-line-strong); transform: translateY(-2px); box-shadow: var(--shadow-2); }
.vert__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 8px;
}
.vert__name {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.015em;
  color: var(--c-black);
}
.vert__name .pfx { font-weight: 300; color: var(--c-text-soft); }
.vert__tag {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--c-text-muted);
}
.vert__desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-text-soft);
}

/* === Cards (generic) === */
.cards {
  margin-top: 56px;
  display: grid;
  gap: 18px;
}
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 920px) { .cards--3, .cards--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cards--2, .cards--3, .cards--4 { grid-template-columns: 1fr; } }

.card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  transition: border-color .2s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
  position: relative;
}
.card:hover { border-color: var(--c-line-strong); transform: translateY(-3px); box-shadow: var(--shadow-2); }
.card__num {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-text-muted);
}
.card__title {
  margin-top: 12px;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.015em;
  color: var(--c-black);
}
.card__body {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-text-soft);
}

/* === Pipeline (custom SVG redesign) === */
.pipelineWrap { margin-top: 60px; position: relative; }
.pipelineCard {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 32px 32px 24px;
  box-shadow: var(--shadow-1);
}
.pipelineHead { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
.pipelineHead h3 {
  font-family: var(--ff-display); font-weight: 700; font-size: 22px;
  letter-spacing: -0.018em; color: var(--c-black);
}
.pipelineHead p { font-size: 14px; color: var(--c-text-muted); margin-top: 4px; }
.pipelineLegend {
  display: flex; gap: 14px; flex-wrap: wrap;
  font-family: var(--ff-mono); font-size: 11px; color: var(--c-text-muted);
  letter-spacing: 0.04em;
}
.pipelineLegend span { display: inline-flex; align-items: center; gap: 6px; }
.pipelineLegend i { width: 8px; height: 8px; border-radius: 2px; }
.pipelineLegend .l-doc { background: #1B2A4E; }
.pipelineLegend .l-ai { background: #6b7280; }
.pipelineLegend .l-out { background: #00B8A9; }

.pipelineSvg { width: 100%; height: auto; display: block; }
.pipelineSvg--mobile { display: none; }
@media (max-width: 780px) {
  .pipelineSvg--desktop { display: none; }
  .pipelineSvg--mobile { display: block; }
}

/* === Videos === */
.videoStage {
  margin-top: 56px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-2);
}
.videoFrame { position: relative; padding-bottom: 56.25%; height: 0; }
.videoFrame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.videoChips {
  margin-top: 18px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.videoChip {
  padding: 9px 16px;
  font-size: 13px; font-weight: 500;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 100px;
  color: var(--c-text-soft);
  transition: all .15s var(--ease);
}
.videoChip:hover { border-color: var(--c-text); color: var(--c-text); }
.videoChip.is-active {
  background: var(--c-black); color: #fff; border-color: var(--c-black);
}

/* === Product shots === */
.shots {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.shot {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s var(--ease);
}
.shot:hover { transform: translateY(-3px); box-shadow: var(--shadow-3); border-color: var(--c-line-strong); }
.shot__img {
  aspect-ratio: 16 / 10;
  width: 100%;
  background: var(--c-bg-tint);
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--c-line);
}
.shot__cap {
  padding: 14px 16px 16px;
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
}
.shot__title {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 14px;
  color: var(--c-black);
  letter-spacing: -0.01em;
}
.shot__tag {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  text-transform: uppercase;
}
.shot--span2 { grid-column: span 2; }
.shot--span3 { grid-column: span 3; }
.shot--span4 { grid-column: span 4; }
@media (max-width: 980px) {
  .shots { grid-template-columns: repeat(2, 1fr); }
  .shot--span2, .shot--span3, .shot--span4 { grid-column: span 2; }
}
@media (max-width: 540px) {
  .shots { grid-template-columns: 1fr; }
  .shot--span2, .shot--span3, .shot--span4 { grid-column: span 1; }
}

/* === Timeline (Before/After) === */
.timeline {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 0;
}
@media (max-width: 760px) { .timeline { grid-template-columns: 1fr; gap: 8px; } }
.tl {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  text-align: center;
}
.tl--accent {
  background: var(--c-black);
  color: #fff; border-color: var(--c-black);
  transform: scale(1.04);
  position: relative;
  z-index: 2;
}
.tl--accent::before {
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-navy), var(--c-teal));
  z-index: -1;
  filter: blur(20px); opacity: 0.35;
}
@media (max-width: 760px) { .tl--accent { transform: none; } }
.tl__tag {
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--c-text-muted); text-transform: uppercase;
}
.tl--accent .tl__tag { color: rgba(255,255,255,0.6); }
.tl__val {
  margin-top: 10px;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 36px;
  letter-spacing: -0.025em;
  color: var(--c-black);
  line-height: 1.05;
}
.tl--accent .tl__val { color: #fff; }
.tl__lbl {
  margin-top: 8px;
  font-size: 13px; color: var(--c-text-muted);
}
.tl--accent .tl__lbl { color: rgba(255,255,255,0.7); }
.tl-arr {
  font-family: var(--ff-mono);
  color: var(--c-text-muted);
  padding: 0 14px;
  font-size: 18px;
}
@media (max-width: 760px) { .tl-arr { display: none; } }

/* === Security feature grid === */
.secGrid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: stretch;
}
@media (max-width: 880px) { .secGrid { grid-template-columns: 1fr; } }
.secMain {
  background: var(--c-ink);
  color: #e8eaef;
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.secMain::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 80% 60% at 20% 20%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 20% 20%, #000 30%, transparent 80%);
  pointer-events: none;
}
.secMain__inner { position: relative; z-index: 1; }
.secMain__kicker {
  font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--c-teal);
}
.secMain__title {
  margin-top: 12px;
  font-family: var(--ff-display); font-weight: 700;
  font-size: 28px; letter-spacing: -0.02em; color: #fff;
  line-height: 1.2;
}
.secMain__desc { margin-top: 14px; color: #b7bbc4; font-size: 15px; }
.secMain__list { margin-top: 24px; display: grid; gap: 12px; }
.secMain__list li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 14.5px; color: #d6d9e0;
}
.secMain__list .ck {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--c-teal); color: var(--c-ink);
  display: inline-flex; align-items: center; justify-content: center;
  flex: none;
  font-size: 11px; font-weight: 800;
}
.secAside { display: grid; gap: 16px; align-content: start; }
.secCard {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 22px;
}
.secCard__num {
  font-family: var(--ff-mono); font-size: 11px;
  letter-spacing: 0.12em; color: var(--c-text-muted);
}
.secCard__t {
  margin-top: 6px;
  font-family: var(--ff-display); font-weight: 700;
  font-size: 17px; letter-spacing: -0.015em; color: var(--c-black);
}
.secCard__d {
  margin-top: 8px; font-size: 13.5px;
  line-height: 1.55; color: var(--c-text-soft);
}

/* === Use cases (industry tabs) === */
.uses {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 920px) { .uses { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .uses { grid-template-columns: 1fr; } }
.use {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 28px 24px 26px;
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s var(--ease);
}
.use::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--c-navy);
  opacity: 0;
  transition: opacity .2s var(--ease);
}
.use:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: var(--c-line-strong); }
.use:hover::before { opacity: 1; }
.use__icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--c-bg-tint);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--ff-mono); font-size: 13px; font-weight: 700;
  color: var(--c-navy);
  letter-spacing: -0.02em;
}
.use__title {
  margin-top: 14px;
  font-family: var(--ff-display); font-weight: 700;
  font-size: 18px; letter-spacing: -0.015em;
  color: var(--c-black);
}
.use__sub {
  margin-top: 2px;
  font-family: var(--ff-mono); font-size: 11px;
  letter-spacing: 0.08em; color: var(--c-text-muted);
  text-transform: uppercase;
}
.use__list { margin-top: 14px; display: grid; gap: 8px; }
.use__list li {
  display: flex; gap: 8px; align-items: flex-start;
  font-size: 13.5px; color: var(--c-text-soft);
  line-height: 1.5;
}
.use__list li::before {
  content: ''; flex: none;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--c-text-muted); margin-top: 9px;
}

/* === Quote === */
.bigquote {
  margin: 96px auto 0;
  max-width: 880px;
  text-align: center;
}
.bigquote__t {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 38px);
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--c-black);
}
.bigquote__t::before, .bigquote__t::after { color: var(--c-text-muted); font-weight: 400; }
.bigquote__t::before { content: '“'; margin-right: 4px; }
.bigquote__t::after { content: '”'; margin-left: 4px; }
.bigquote__by {
  margin-top: 18px;
  font-family: var(--ff-mono); font-size: 12px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--c-text-muted);
}

/* === CTA Section === */
.ctaBlock {
  position: relative;
  margin-top: 0;
  padding: 80px 56px;
  background: var(--c-ink);
  color: #fff;
  border-radius: 20px;
  overflow: hidden;
  text-align: center;
}
.ctaBlock::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 20% 20%, rgba(0,184,169,0.20), transparent 50%),
                    radial-gradient(circle at 80% 80%, rgba(27,42,78,0.40), transparent 50%);
  pointer-events: none;
}
.ctaBlock__inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.ctaBlock__title {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: #fff;
}
.ctaBlock__sub {
  margin-top: 18px;
  font-size: 17px;
  color: #b7bbc4;
}
.ctaBlock__cta { margin-top: 36px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.ctaBlock__contacts {
  margin-top: 28px;
  font-family: var(--ff-mono); font-size: 12.5px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
}
.ctaBlock__contacts a { color: rgba(255,255,255,0.85); }
.ctaBlock__contacts a:hover { color: #fff; }

/* === Footer === */
.footer {
  padding: 64px 0 32px;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
  position: relative; z-index: 2;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
.footer__brand .brand__studio,
.footer__brand .brand__bren { font-size: 22px; }
.footer__desc { margin-top: 14px; font-size: 13.5px; color: var(--c-text-muted); max-width: 360px; line-height: 1.55; }
.footer__col h4 {
  font-family: var(--ff-mono);
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--c-text-muted);
  margin-bottom: 14px;
}
.footer__col a, .footer__col button {
  display: block;
  font-size: 13.5px; color: var(--c-text-soft);
  padding: 5px 0;
  text-align: left; cursor: pointer;
}
.footer__col a:hover, .footer__col button:hover { color: var(--c-black); }
.footer__bottom {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid var(--c-line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 12px; color: var(--c-text-muted);
}

/* === Modal === */
.modal {
  position: fixed; inset: 0;
  background: rgba(10, 10, 10, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal.active { display: flex; animation: fadeIn .18s var(--ease) both; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal__panel {
  background: #fff;
  border-radius: 16px;
  width: 100%;
  max-width: 540px;
  max-height: 92vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,0.3);
  animation: rise .25s var(--ease) both;
}
@keyframes rise { from { transform: translateY(20px) scale(0.98); opacity: 0; } to { transform: none; opacity: 1; } }

.modal__close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--c-text-muted);
  transition: background .15s var(--ease), color .15s var(--ease);
  font-size: 20px;
}
.modal__close:hover { background: var(--c-bg-tint); color: var(--c-text); }

.modal__head { padding: 32px 36px 8px; }
.modal__head h2 {
  font-family: var(--ff-display); font-weight: 700;
  font-size: 24px; letter-spacing: -0.02em; color: var(--c-black);
}
.modal__head p { margin-top: 8px; font-size: 14px; color: var(--c-text-soft); line-height: 1.6; }

.demoForm { padding: 24px 36px 28px; display: grid; gap: 16px; }
.demoForm__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .demoForm__row { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; }
.field > label {
  font-size: 12.5px; font-weight: 600; color: var(--c-text);
  letter-spacing: -0.005em;
}
.field > label .req { color: #e11d48; margin-left: 2px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 11px 14px;
  font-size: 14px;
  background: #fff;
  border: 1px solid var(--c-line-strong);
  border-radius: 8px;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
  color: var(--c-text);
}
.field textarea { resize: vertical; min-height: 90px; line-height: 1.5; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--c-black);
  box-shadow: 0 0 0 3px rgba(10,10,10,0.06);
}
.field input.is-error, .field textarea.is-error { border-color: #e11d48; }
.field input.is-valid { border-color: #10b981; }
.field__err { font-size: 12px; color: #e11d48; min-height: 1em; }

.demoForm__agree {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; color: var(--c-text-soft);
  padding: 4px 0;
}
.demoForm__agree input { margin-top: 3px; accent-color: var(--c-black); }
.demoForm__agree a { color: var(--c-text); text-decoration: underline; text-underline-offset: 2px; }

.modal__foot {
  border-top: 1px solid var(--c-line);
  padding: 16px 36px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
  font-size: 12.5px; color: var(--c-text-muted);
}
.modal__foot strong { color: var(--c-text); font-weight: 600; margin: 0 6px 0 8px; }
.modal__foot a { color: var(--c-text); font-weight: 500; }

/* Success modal */
.success { text-align: center; padding: 44px 36px 36px; }
.success__icon {
  width: 64px; height: 64px;
  background: var(--c-teal-soft);
  color: var(--c-teal);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 28px;
}
.success h2 {
  font-family: var(--ff-display); font-weight: 700;
  font-size: 22px; letter-spacing: -0.02em; color: var(--c-black);
}
.success p { margin-top: 10px; font-size: 14.5px; color: var(--c-text-soft); }
.success .reqno {
  margin-top: 14px;
  display: inline-block;
  padding: 6px 14px;
  font-family: var(--ff-mono); font-size: 12px;
  background: var(--c-bg-tint); border-radius: 100px;
  color: var(--c-text);
  letter-spacing: 0.04em;
}
.success .btn { margin-top: 24px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px; left: 50%; transform: translate(-50%, 20px);
  background: var(--c-ink); color: #fff;
  padding: 12px 20px;
  border-radius: 100px;
  font-size: 13.5px;
  opacity: 0; transition: all .22s var(--ease);
  z-index: 2000;
  box-shadow: 0 14px 40px rgba(0,0,0,0.2);
  font-weight: 500;
}
.toast.error { background: #b91c1c; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Floating CTA */
.fab {
  position: fixed; right: 24px; bottom: 24px;
  z-index: 99;
  padding: 13px 22px;
  font-size: 14px; font-weight: 600;
  background: var(--c-black); color: #fff;
  border-radius: 100px;
  box-shadow: 0 10px 28px rgba(0,0,0,0.18);
  display: none;
  transition: transform .15s var(--ease);
}
.fab.show { display: inline-flex; }
.fab:hover { transform: translateY(-2px); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease-out), transform .6s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }

/* Body lock */
body.lock { overflow: hidden; }

/* Spinner */
.spin { animation: spin 1s linear infinite; }
@keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }

/* utility */
.center { text-align: center; }
.muted { color: var(--c-text-muted); }
.mono { font-family: var(--ff-mono); }

/* === Demo standalone page === */
.demoPage {
  padding: 64px 0 96px;
  background: var(--c-bg-soft);
  min-height: calc(100vh - 64px);
}
.demoPage__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 920px) { .demoPage__grid { grid-template-columns: 1fr; } }
.demoPage__left h1 {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: clamp(32px, 4.4vw, 48px);
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--c-black);
}
.demoPage__left p { margin-top: 18px; font-size: 17px; color: var(--c-text-soft); line-height: 1.65; }
.demoPage__bullets { margin-top: 30px; display: grid; gap: 14px; }
.demoPage__bullets li {
  display: flex; gap: 14px; align-items: flex-start;
  font-size: 14.5px; color: var(--c-text);
}
.demoPage__bullets .b {
  flex: none;
  font-family: var(--ff-mono); font-size: 11px;
  color: var(--c-text-muted);
  letter-spacing: 0.08em;
  width: 26px;
  padding-top: 3px;
}
.demoPage__bullets strong { font-weight: 600; color: var(--c-black); display: block; margin-bottom: 2px; font-size: 15px; }
.demoPage__contacts {
  margin-top: 36px;
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-size: 13.5px; color: var(--c-text-soft);
}
.demoPage__contacts strong { color: var(--c-text); font-weight: 600; }

.demoPage__formCard {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 16px;
  padding: 32px 36px 36px;
  box-shadow: var(--shadow-2);
  position: sticky; top: 96px;
}
.demoPage__formCard h2 {
  font-family: var(--ff-display); font-weight: 700;
  font-size: 22px; letter-spacing: -0.02em; color: var(--c-black);
}
.demoPage__formCard p { margin-top: 6px; font-size: 14px; color: var(--c-text-soft); }
.demoPage__formCard .demoForm { padding: 22px 0 0; }
.submitBtn {
  margin-top: 8px;
  width: 100%;
  padding: 14px 18px;
  background: var(--c-black); color: #fff;
  border-radius: 10px;
  font-size: 15px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  transition: background .15s var(--ease), transform .12s var(--ease);
}
.submitBtn:hover { background: #000; transform: translateY(-1px); }
.submitBtn:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }