/*
 * Burst Guardian Corporate Website
 * Global Design System
 *
 * Scope:
 * - Company homepage
 * - Use-case introduction pages
 *
 * Not for:
 * - TicketBG consumer application
 * - AppInToss application UI
 * - Organizer console
 *
 * Load order:
 * 1. reset.css
 * 2. style.css
 * 3. page stylesheet (home.css / uses.css)
 */

/* =========================================================
   01. Design tokens
========================================================= */

:root {
  color-scheme: dark;

  /* Font families */
  --font-sans:
    "Pretendard Variable", "Pretendard", "Noto Sans KR", -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-mono:
    "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  /* Brand colors */
  --blue-300: #72b7ff;
  --blue-400: #3b9bff;
  --blue-500: #1687ff;
  --blue-600: #0872e6;

  --green-300: #60e6b7;
  --green-400: #2ad99d;
  --green-500: #18c98b;
  --green-600: #0eaa72;

  --orange-300: #ffba72;
  --orange-400: #ff9e3f;
  --orange-500: #ff8420;
  --orange-600: #e66b08;

  --violet-500: #8f6bff;
  --cyan-400: #40c7ff;
  --slate-300: #a4b0c1;

  /* Neutral colors */
  --black: #000000;
  --white: #ffffff;

  --bg-0: #08111d;
  --bg-1: #0c1724;
  --bg-2: #111e2d;
  --bg-3: #172638;

  --surface-1: rgba(104, 174, 255, 0.045);
  --surface-2: rgba(104, 174, 255, 0.075);
  --surface-3: rgba(104, 174, 255, 0.11);
  --surface-ghost: rgba(104, 174, 255, 0.018);
  --surface-whisper: rgba(104, 174, 255, 0.014);
  --surface-faint: rgba(104, 174, 255, 0.02);
  --surface-faint-strong: rgba(104, 174, 255, 0.028);
  --surface-grid: rgba(92, 160, 230, 0.055);

  --panel-visual: rgba(7, 16, 28, 0.84);
  --panel-chip: rgba(8, 12, 18, 0.84);
  --panel-use: rgba(5, 9, 15, 0.82);
  --panel-label: rgba(7, 10, 15, 0.87);
  --panel-deep: rgba(5, 7, 10, 0.86);
  --panel-deep-soft: rgba(5, 7, 10, 0.8);

  --text-1: #f7f9fc;
  --text-2: #b8c1ce;
  --text-3: #818c9c;
  --text-4: #5f6977;

  --line-1: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.15);
  --line-blue: rgba(22, 135, 255, 0.38);
  --line-green: rgba(24, 201, 139, 0.34);
  --line-orange: rgba(255, 132, 32, 0.36);
  --line-blue-bright: rgba(114, 183, 255, 0.54);

  --blue-a015: rgba(22, 135, 255, 0.015);
  --blue-a025: rgba(22, 135, 255, 0.025);
  --blue-a055: rgba(22, 135, 255, 0.055);
  --blue-a12: rgba(22, 135, 255, 0.12);
  --blue-a14: rgba(22, 135, 255, 0.14);
  --blue-a15: rgba(22, 135, 255, 0.15);
  --blue-a18: rgba(22, 135, 255, 0.18);
  --blue-a20: rgba(22, 135, 255, 0.2);
  --blue-a23: rgba(22, 135, 255, 0.23);
  --blue-a55: rgba(22, 135, 255, 0.55);
  --green-a40: rgba(24, 201, 139, 0.4);
  --green-a52: rgba(24, 201, 139, 0.52);
  --green-a62: rgba(24, 201, 139, 0.62);
  --orange-a035: rgba(255, 132, 32, 0.035);
  --orange-a08: rgba(255, 132, 32, 0.08);
  --orange-a52: rgba(255, 132, 32, 0.52);
  --orange-a62: rgba(255, 132, 32, 0.62);

  /* Semantic aliases */
  --c-bg: var(--bg-0);
  --c-surface: var(--bg-1);
  --c-surface-raised: var(--bg-2);
  --c-text: var(--text-1);
  --c-text-muted: var(--text-2);
  --c-text-subtle: var(--text-3);
  --c-border: var(--line-1);
  --c-primary: var(--blue-500);
  --c-success: var(--green-500);
  --c-accent: var(--orange-500);

  /* Typography scale */
  --text-xs: clamp(0.72rem, 0.69rem + 0.12vw, 0.78rem);
  --text-micro: 0.67rem;
  --text-sm: clamp(0.82rem, 0.79rem + 0.14vw, 0.91rem);
  --text-md: clamp(0.96rem, 0.91rem + 0.18vw, 1.075rem);
  --text-lg: clamp(1.08rem, 1rem + 0.32vw, 1.28rem);
  --text-xl: clamp(1.28rem, 1.08rem + 0.68vw, 1.72rem);
  --text-2xl: clamp(1.65rem, 1.27rem + 1.25vw, 2.4rem);
  --text-3xl: clamp(2.15rem, 1.47rem + 2.25vw, 3.55rem);
  --text-4xl: clamp(1.8rem, 1.3rem + 1.8vw, 2.9rem);
  --text-hero: clamp(2.1375rem, 1.425rem + 2.4vw, 3.9375rem);
  --text-metric: clamp(1.2rem, 1rem + 0.75vw, 1.75rem);

  /* Line heights */
  --leading-none: 1;
  --leading-tight: 1.08;
  --leading-hero: 1.242;
  --leading-heading: 1.18;
  --leading-section-heading: 1.298;
  --leading-body: 1.72;

  /* Letter spacing */
  --tracking-tight: -0.045em;
  --tracking-heading: -0.028em;
  --tracking-body: -0.012em;
  --tracking-wide: 0.14em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-28: 7rem;
  --space-32: 8rem;

  --section-space: clamp(6rem, 10vw, 10rem);
  --section-space-compact: clamp(4.5rem, 7vw, 7rem);
  --content-gap: clamp(1.5rem, 3vw, 3rem);

  /* Layout */
  --page-gutter: clamp(1.25rem, 4vw, 4.5rem);
  --container: 88rem;
  --container-wide: 104rem;
  --container-narrow: 54rem;
  --header-height: 5.25rem;

  /* Radius */
  --radius-sm: 0.6rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.35rem;
  --radius-xl: 2rem;
  --radius-visual: 2.2rem;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.22);
  --shadow-card: 0 26px 90px rgba(0, 0, 0, 0.28);
  --shadow-blue:
    0 0 0 1px rgba(22, 135, 255, 0.12), 0 30px 90px rgba(22, 135, 255, 0.08);
  --shadow-visual-core:
    inset 0 0 4rem var(--blue-a12),
    0 0 0 1.5rem var(--blue-a025),
    0 0 0 3.2rem var(--blue-a015),
    0 35px 110px var(--blue-a23);
  --shadow-use-core:
    0 0 0 1.2rem color-mix(in srgb, var(--use-color, var(--blue-500)) 4%, transparent),
    0 26px 90px color-mix(in srgb, var(--use-color, var(--blue-500)) 18%, transparent);
  --shadow-glow-orange: 0 0 1rem var(--orange-a62);
  --shadow-glow-green: 0 0 1rem var(--green-a62);
  --shadow-image-blue: drop-shadow(0 28px 70px var(--blue-a20));
  --shadow-image-blue-wide: drop-shadow(0 34px 80px var(--blue-a18));

  /* Motion */
  --duration-fast: 180ms;
  --duration-base: 360ms;
  --duration-slow: 760ms;
  --duration-enter: 900ms;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-standard: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* =========================================================
   02. Document foundation
========================================================= */

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  background: var(--c-bg);
}

body {
  min-width: 20rem;
  min-height: 100%;
  overflow-x: clip;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: 400;
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--c-text);
  background:
    radial-gradient(
      circle at 10% -6%,
      rgba(22, 135, 255, 0.2),
      transparent 38rem
    ),
    radial-gradient(
      circle at 92% 10%,
      rgba(24, 201, 139, 0.1),
      transparent 34rem
    ),
    var(--c-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.is-locked {
  overflow: hidden;
}

::selection {
  color: var(--white);
  background: rgba(22, 135, 255, 0.42);
}

:target {
  scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

/* =========================================================
   03. Typography
========================================================= */

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-1);
  font-weight: 680;
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  word-break: keep-all;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-hero);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-4xl);
  line-height: var(--leading-section-heading);
}

h3 {
  font-size: var(--text-2xl);
  line-height: var(--leading-section-heading);
}

h4 {
  font-size: var(--text-xl);
}

p,
li,
dd {
  color: var(--text-2);
  word-break: keep-all;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

strong,
b {
  color: var(--text-1);
  font-weight: 650;
}

small {
  font-size: var(--text-sm);
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

pre {
  overflow: auto;
  padding: var(--space-6);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-md);
  color: #d8e7f7;
  background: #070b10;
}

.kicker,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 680;
  line-height: 1.2;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--blue-300);
}

.kicker::before,
.eyebrow::before {
  width: 1.65rem;
  height: 1px;
  content: "";
  background: currentColor;
  opacity: 0.72;
}

.text-lead {
  max-width: 47rem;
  font-size: var(--text-lg);
  line-height: 1.68;
  color: var(--text-2);
}

.text-muted {
  color: var(--text-3);
}

.text-gradient {
  color: transparent;
  background: linear-gradient(
    105deg,
    var(--blue-300),
    var(--green-300) 52%,
    var(--orange-300)
  );
  background-clip: text;
  -webkit-background-clip: text;
}

.metric-number {
  font-size: clamp(2.3rem, 1.7rem + 2vw, 4rem);
  font-weight: 720;
  line-height: 1;
  letter-spacing: -0.055em;
  color: var(--text-1);
}

/* =========================================================
   04. Layout primitives
========================================================= */

.site-shell {
  position: relative;
  min-height: 100svh;
  isolation: isolate;
}

.site-shell::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(var(--surface-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface-grid) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.18));
}

.container,
.container-wide,
.container-narrow {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.container-wide {
  width: min(100%, var(--container-wide));
}

.container-narrow {
  width: min(100%, var(--container-narrow));
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section--compact {
  padding-block: var(--section-space-compact);
}

.section--bordered {
  border-top: 1px solid var(--line-1);
}

.section-heading {
  display: grid;
  max-width: 64rem;
  gap: var(--space-5);
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap, var(--space-6));
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-4));
}

.grid {
  display: grid;
  gap: var(--grid-gap, var(--content-gap));
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.9fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
}

.full-bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

.flow > * + * {
  margin-top: var(--flow-space, var(--space-5));
}

/* =========================================================
   05. Links and buttons
========================================================= */

a,
button {
  -webkit-tap-highlight-color: transparent;
}

a {
  transition:
    color var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--text-1);
}

:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 2px solid var(--blue-400);
  outline-offset: 4px;
}

.button {
  --button-bg: var(--blue-500);
  --button-color: var(--white);
  --button-border: transparent;

  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 0.82rem 1.35rem;
  border: 1px solid var(--button-border);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 650;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--button-color);
  background: var(--button-bg);
  cursor: pointer;
  transition:
    transform var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

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

.button:active {
  transform: translateY(0);
}

.button--primary {
  box-shadow: 0 14px 44px rgba(22, 135, 255, 0.2);
}

.button--primary:hover {
  --button-bg: var(--blue-400);
  box-shadow: 0 18px 54px rgba(22, 135, 255, 0.28);
}

.button--secondary {
  --button-bg: rgba(255, 255, 255, 0.045);
  --button-color: var(--text-1);
  --button-border: var(--line-2);
}

.button--secondary:hover {
  --button-bg: rgba(255, 255, 255, 0.085);
  --button-border: rgba(255, 255, 255, 0.24);
}

.button--accent {
  --button-bg: var(--orange-500);
  box-shadow: 0 14px 44px rgba(255, 132, 32, 0.17);
}

.button--ghost {
  --button-bg: transparent;
  --button-color: var(--text-2);
  --button-border: transparent;
  padding-inline: 0;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 620;
  color: var(--text-1);
}

.text-link::after {
  content: "↗";
  transition: transform var(--duration-fast) var(--ease-out);
}

.text-link:hover::after {
  transform: translate(2px, -2px);
}

/* =========================================================
   06. Cards and surfaces
========================================================= */

.surface,
.card {
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.035),
      rgba(255, 255, 255, 0.012)
    ),
    var(--bg-1);
  box-shadow: var(--shadow-soft);
}

.card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.25rem);
}

.card::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(
    125deg,
    rgba(22, 135, 255, 0.07),
    transparent 38%
  );
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.card--interactive {
  transition:
    transform var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-standard),
    background var(--duration-base) var(--ease-standard);
}

.card--interactive:hover {
  border-color: var(--line-blue);
  transform: translateY(-4px);
}

.card--interactive:hover::before {
  opacity: 1;
}

.card > * {
  position: relative;
  z-index: 1;
}

.card-number {
  display: inline-grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  border: 1px solid var(--line-1);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-3);
}

.divider {
  width: 100%;
  height: 1px;
  border: 0;
  background: var(--line-1);
}

/* =========================================================
   07. Media
========================================================= */

.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-xl);
  background: var(--bg-1);
  box-shadow: var(--shadow-card);
}

.media-frame img,
.media-frame video,
.media-frame canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.025);
}

/* =========================================================
   08. Status and technical labels
========================================================= */

.badge {
  display: inline-flex;
  min-height: 1.9rem;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.035);
}

.badge--live::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  content: "";
  background: var(--green-500);
  box-shadow: 0 0 0 0 rgba(24, 201, 139, 0.34);
  animation: live-pulse 2.4s ease-out infinite;
}

@keyframes live-pulse {
  70% {
    box-shadow: 0 0 0 0.48rem rgba(24, 201, 139, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(24, 201, 139, 0);
  }
}

/* =========================================================
   09. Entry and scroll reveal motion
========================================================= */

/*
 * Fail-safe:
 * Elements remain visible unless JavaScript adds .motion-ready to <html>.
 */

[data-enter],
[data-reveal] {
  opacity: 1;
  transform: none;
}

.motion-ready [data-enter] {
  opacity: 0;
  transform: translate3d(0, 1.4rem, 0);
}

.motion-ready [data-enter="header"] {
  transform: translate3d(0, -1rem, 0);
}

.motion-ready [data-enter="media"] {
  transform: translate3d(0, 1.4rem, 0) scale(0.985);
}

.motion-ready [data-enter].is-entered {
  opacity: 1;
  transform: none;
  transition:
    opacity var(--duration-enter) var(--ease-out) var(--enter-delay, 0ms),
    transform var(--duration-enter) var(--ease-out) var(--enter-delay, 0ms);
}

.motion-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 2rem, 0);
}

.motion-ready [data-reveal="left"] {
  transform: translate3d(-2rem, 0, 0);
}

.motion-ready [data-reveal="right"] {
  transform: translate3d(2rem, 0, 0);
}

.motion-ready [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition:
    opacity var(--duration-slow) var(--ease-out) var(--reveal-delay, 0ms),
    transform var(--duration-slow) var(--ease-out) var(--reveal-delay, 0ms);
}

/* =========================================================
   10. Scroll indicator
========================================================= */

.scroll-indicator {
  position: fixed;
  bottom: max(1.25rem, calc(env(safe-area-inset-bottom) + 0.75rem));
  left: 50%;
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  min-width: 4.5rem;
  padding: 0.7rem 0.8rem 0.55rem;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  background: color-mix(in srgb, var(--bg-0) 82%, transparent);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transform: translateX(-50%);
  transition:
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard);
}

.scroll-indicator::after {
  width: 1px;
  height: 1.4rem;
  content: "";
  background: linear-gradient(180deg, var(--blue-400), transparent);
  transform-origin: center top;
  animation: scroll-line 1.9s var(--ease-out) infinite;
}

.scroll-indicator:hover {
  color: var(--text-1);
  border-color: var(--line-2);
}

.scroll-indicator.is-hidden {
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 0.75rem);
}

.is-locked .scroll-indicator,
.modal-open .scroll-indicator {
  pointer-events: none;
  opacity: 0;
}

@keyframes scroll-line {
  0% {
    opacity: 0.3;
    transform: scaleY(0.34);
  }

  55% {
    opacity: 1;
    transform: scaleY(1);
  }

  100% {
    opacity: 0;
    transform: scaleY(1);
    transform-origin: center bottom;
  }
}

/* =========================================================
   11. Accessibility helpers
========================================================= */

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 9999;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--white);
  background: var(--blue-500);
  transform: translateY(-180%);
  transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* =========================================================
   12. Responsive rules
========================================================= */

@media (max-width: 72rem) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 52rem) {
  :root {
    --header-height: 4.5rem;
    --page-gutter: clamp(1rem, 5vw, 1.5rem);
    --section-space: clamp(4.75rem, 18vw, 7rem);
    --section-space-compact: clamp(3.5rem, 13vw, 5rem);
    --text-hero: clamp(2.025rem, 9.45vw, 3.4875rem);
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .section-heading {
    margin-bottom: var(--space-10);
  }

  .button {
    min-height: 3.1rem;
  }

  .card {
    padding: 1.35rem;
  }

  .site-shell::before {
    background-size: 3rem 3rem;
  }
}

@media (max-width: 30rem) {
  .button {
    width: 100%;
  }

  .cluster:has(.button) {
    align-items: stretch;
  }
}

/* =========================================================
   13. Motion preference
========================================================= */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  [data-enter],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* =========================================================
   14. Print
========================================================= */

@media print {
  :root {
    color-scheme: light;
  }

  body {
    color: #111827;
    background: #ffffff;
  }

  .site-shell::before,
  .scroll-indicator,
  [data-motion-only] {
    display: none !important;
  }

  .card,
  .surface,
  .media-frame {
    border-color: #d1d5db;
    box-shadow: none;
  }
}

/* =========================================================
   15. Shared site chrome
========================================================= */

[hidden] {
  display: none !important;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid var(--line-1);
  background: rgba(8, 17, 29, 0.86);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  transition:
    background var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    backdrop-filter var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled,
.site-header.is-menu-open {
  border-color: var(--line-1);
  background: rgba(8, 17, 29, 0.86);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
}

.header-inner {
  display: grid;
  height: 100%;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-8);
}

.site-brand {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 0.72rem;
  color: var(--text-1);
}

.site-brand:hover {
  color: var(--text-1);
}

.site-brand img {
  width: clamp(2.65rem, 3.4vw, 3.2rem);
  height: clamp(2.65rem, 3.4vw, 3.2rem);
  object-fit: contain;
  filter: drop-shadow(0 8px 24px rgba(22, 135, 255, 0.18));
}

.brand-copy {
  display: grid;
  gap: 0.08rem;
  line-height: 1;
}

.brand-copy strong {
  font-size: clamp(1.5rem, 1.3rem + 0.2vw, 1.5rem);
  font-weight: 720;
  letter-spacing: -0.035em;
}

.brand-copy small {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: var(--text-3);
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.2rem, 2.5vw, 2.4rem);
}

.desktop-nav > a,
.nav-dropdown-toggle {
  position: relative;
  padding: 0.55rem 0;
  font-size: var(--text-sm);
  font-weight: 570;
  color: var(--text-2);
}

.desktop-nav > a::after,
.nav-dropdown-toggle::after {
  position: absolute;
  right: 0;
  bottom: 0.2rem;
  left: 0;
  height: 1px;
  content: "";
  background: var(--blue-400);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--duration-fast) var(--ease-out);
}

.desktop-nav > a:hover::after,
.desktop-nav > a[aria-current="page"]::after,
.nav-dropdown-toggle:hover::after,
.nav-dropdown-toggle[aria-expanded="true"]::after {
  transform: scaleX(1);
}

.desktop-nav > a[aria-current="page"],
.nav-dropdown-toggle[aria-expanded="true"] {
  color: var(--text-1);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-dropdown-toggle svg {
  width: 0.82rem;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-dropdown-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.95rem);
  left: 50%;
  width: min(34rem, 80vw);
  padding: 0.65rem;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  background: rgba(9, 13, 18, 0.96);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(20px);
  transform: translateX(-50%);
}

.nav-dropdown-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem;
}

.nav-dropdown-menu a {
  display: grid;
  gap: 0.15rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-standard);
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.055);
}

.nav-dropdown-menu strong {
  font-size: var(--text-sm);
}

.nav-dropdown-menu span {
  font-size: var(--text-xs);
  color: var(--text-3);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.header-contact {
  min-height: 2.75rem;
  padding-inline: 1.1rem;
}

.menu-toggle {
  display: none;
  width: 2.9rem;
  height: 2.9rem;
  place-items: center;
  border: 1px solid var(--line-1);
  border-radius: 50%;
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.035);
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  width: 1.05rem;
  height: 1px;
  content: "";
  background: currentColor;
  transition:
    transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

.menu-toggle {
  position: relative;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.menu-toggle::before {
  top: 0.94rem;
}
.menu-toggle span {
  top: 1.4rem;
}
.menu-toggle::after {
  top: 1.86rem;
}

.menu-toggle[aria-expanded="true"]::before {
  top: 1.4rem;
  transform: translateX(-50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"]::after {
  top: 1.4rem;
  transform: translateX(-50%) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: var(--header-height) 0 auto;
  z-index: 999;
  max-height: calc(100svh - var(--header-height));
  overflow: auto;
  padding: 1rem var(--page-gutter) 1.5rem;
  border-bottom: 1px solid var(--line-1);
  background: rgba(8, 17, 29, 0.97);
  backdrop-filter: blur(20px);
}

.mobile-menu nav {
  display: grid;
  gap: 0.25rem;
}

.mobile-menu a,
.mobile-menu button {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-1);
  font-size: var(--text-md);
  color: var(--text-1);
}

.mobile-menu small {
  color: var(--text-3);
}

.site-main {
  min-height: 70svh;
}

.site-footer {
  border-top: 1px solid var(--line-1);
  background: #040609;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(16rem, 0.8fr) minmax(0, 1.4fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(4rem, 7vw, 6.5rem) 2rem;
}

.footer-brand {
  display: grid;
  align-content: start;
  gap: var(--space-5);
}

.footer-brand .site-brand {
  width: max-content;
}

.footer-brand p {
  max-width: 26rem;
  font-size: var(--text-sm);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
}

.footer-links h2 {
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  letter-spacing: 0;
}

.footer-links ul {
  display: grid;
  gap: var(--space-2);
}

.footer-links a,
.footer-links button,
.footer-links address,
.footer-links p {
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--text-3);
}

.footer-links a:hover,
.footer-links button:hover {
  color: var(--text-1);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: 1.4rem 2rem;
  border-top: 1px solid var(--line-1);
}

.footer-bottom p,
.footer-bottom span {
  font-size: var(--text-xs);
  color: var(--text-4);
}

/* Modal / contact */
.modal-open {
  overflow: hidden;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  padding: var(--page-gutter);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(8px);
}

.modal {
  position: relative;
  width: min(100%, 46rem);
  max-height: min(86svh, 54rem);
  overflow: auto;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-xl);
  background: var(--bg-1);
  box-shadow: var(--shadow-card);
}

.modal--compact {
  width: min(100%, 38rem);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.modal-header h2 {
  font-size: var(--text-2xl);
}

.modal-close {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line-1);
  border-radius: 50%;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.035);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.contact-form label {
  display: grid;
  gap: var(--space-2);
}

.contact-form label.is-wide {
  grid-column: 1 / -1;
}

.contact-form label > span {
  font-size: var(--text-sm);
  font-weight: 620;
  color: var(--text-2);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.95rem;
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.035);
  transition:
    border-color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard);
}

.contact-form textarea {
  min-height: 9rem;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--blue-400);
  background: rgba(22, 135, 255, 0.045);
}

.contact-form .button {
  grid-column: 1 / -1;
}

.terms-content {
  display: grid;
  gap: var(--space-5);
}

.terms-content h6 {
  font-size: var(--text-md);
  font-weight: 650;
  color: var(--text-1);
}

.terms-content small {
  line-height: 1.85;
  color: var(--text-3);
}

.toast {
  position: fixed;
  right: var(--page-gutter);
  bottom: var(--page-gutter);
  z-index: 4000;
  max-width: min(25rem, calc(100vw - 2 * var(--page-gutter)));
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--text-1);
  background: rgba(9, 13, 18, 0.96);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(0.75rem);
  transition:
    opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.toast.is-visible {
  opacity: 1;
  transform: none;
}

.toast--success {
  border-color: var(--line-green);
}
.toast--error {
  border-color: var(--line-orange);
}

@media (max-width: 64rem) {
  .desktop-nav,
  .header-contact {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .menu-toggle {
    display: grid;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 52rem) {
  .brand-copy small {
    display: none;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .footer-links > :last-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .contact-form label.is-wide,
  .contact-form .button {
    grid-column: auto;
  }
}

@media (max-width: 30rem) {
  .footer-links {
    grid-template-columns: 1fr;
  }

  .footer-links > :last-child {
    grid-column: auto;
  }
}