/* ===================================================================
   Shark Map AI — Design System
   Tokens, layout primitives, components, responsive rules
=================================================================== */

:root {
  /* Color */
  --bg-void: #020817;
  --bg-deep: #071A2B;
  --bg-panel: #0A2036;
  --bg-card: #0C2338;
  --blue: #0284C7;
  --cyan: #22D3EE;
  --white: #F8FAFC;
  --gray-light: #CBD5E1;
  --gray: #94A3B8;
  --gold: #F5C451;
  --border-soft: rgba(148, 163, 184, 0.14);
  --border-cyan: rgba(34, 211, 238, 0.22);
  --danger: #F87171;

  /* Type */
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;

  /* Radius / shadow */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-glow: 0 0 0 1px var(--border-cyan), 0 20px 60px -20px rgba(2, 132, 199, 0.45);
  --shadow-card: 0 10px 30px -18px rgba(0, 0, 0, 0.6);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;

  /* Layout */
  --container-w: 1180px;
  --header-h: 76px;
}

/* ===================== Reset ===================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-void);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.18; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
select, input { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--cyan);
  color: var(--bg-void);
  padding: 12px 18px;
  z-index: 999;
  font-weight: 600;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== Background texture ===================== */
.grid-texture {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  pointer-events: none;
}
.glow--cyan { width: 480px; height: 480px; background: var(--cyan); top: -120px; right: -80px; }
.glow--blue { width: 420px; height: 420px; background: var(--blue); bottom: -160px; left: -100px; opacity: 0.28; }

.crosshair {
  position: absolute;
  opacity: 0.22;
  pointer-events: none;
}
.crosshair line { stroke: var(--gray); stroke-width: 1; }
.crosshair circle { fill: var(--cyan); }
.crosshair--1 { top: 8%; left: 6%; }
.crosshair--2 { bottom: 10%; right: 10%; }
@media (max-width: 992px) {
  .crosshair { display: none; }
}

/* ===================== Header ===================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease), backdrop-filter var(--dur-med) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(2, 8, 23, 0.82);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border-soft);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand__name em { font-style: normal; color: var(--cyan); }

.main-nav__list { display: flex; gap: 30px; position: relative; }
.main-nav__list a {
  font-size: 0.92rem;
  color: var(--gray-light);
  transition: color var(--dur-fast) var(--ease);
  position: relative;
}
.main-nav__list a:hover { color: var(--white); }
.main-nav__list a.is-active { color: var(--cyan); }
.main-nav__indicator {
  position: absolute;
  bottom: -8px;
  height: 2px;
  width: 0;
  background: var(--cyan);
  border-radius: 2px;
  opacity: 0;
  transform: translateX(0);
  transition: transform 380ms var(--ease), width 380ms var(--ease), opacity 200ms ease;
  pointer-events: none;
}
.main-nav__indicator.is-active { opacity: 1; }

.header__actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
}
.nav-toggle__bar {
  width: 20px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 8, 23, 0.6);
  z-index: 150;
}

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.btn--primary {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #01121F;
  box-shadow: 0 12px 30px -10px rgba(34, 211, 238, 0.45);
}
.btn--primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  transition: left 650ms var(--ease);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(34, 211, 238, 0.55); }
.btn--primary:hover::after { left: 130%; }
.btn--ghost {
  border: 1px solid var(--border-soft);
  color: var(--white);
  background: rgba(248, 250, 252, 0.03);
}
.btn--ghost:hover { border-color: var(--border-cyan); background: rgba(34, 211, 238, 0.06); }
.btn--large { padding: 16px 32px; font-size: 1rem; }
.btn--small { padding: 9px 18px; font-size: 0.85rem; }

/* ===================== Reveal-on-scroll ===================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===================== Hero ===================== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 64px) 0 96px;
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 18px;
}
.hero__title {
  font-size: clamp(2.1rem, 4vw + 0.5rem, 3.6rem);
  margin-bottom: 22px;
}
.text-gradient {
  background: linear-gradient(100deg, var(--cyan), var(--blue) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__subtitle {
  font-size: 1.1rem;
  color: var(--gray-light);
  max-width: 54ch;
  margin-bottom: 14px;
}
.hero__complement {
  font-size: 0.98rem;
  color: var(--gray);
  max-width: 54ch;
  margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.hero__microcopy { font-size: 0.85rem; color: var(--gray); margin-bottom: 28px; }

.chip-list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 0.8rem;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--gray-light);
  background: rgba(248, 250, 252, 0.03);
}

/* ---- Floating status badges ---- */
.hero__visual { position: relative; perspective: 1200px; }
.float-badge {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(10, 32, 54, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-cyan);
  box-shadow: 0 14px 30px -14px rgba(0, 0, 0, 0.6);
  font-size: 0.78rem;
  font-family: var(--font-display);
  color: var(--white);
  white-space: nowrap;
}
.float-badge__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(34,211,238,0.6);
  animation: pulse 1.8s infinite;
  flex-shrink: 0;
}
.float-badge--top { top: -18px; right: 24px; }
.float-badge--bottom { bottom: -16px; left: 28px; }
@media (max-width: 992px) {
  .float-badge { display: none; }
}

/* ---- App window mockup ---- */
.app-window {
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-panel), var(--bg-deep));
  box-shadow: var(--shadow-glow);
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 120ms ease-out;
}
.app-window__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(2, 8, 23, 0.5);
  border-bottom: 1px solid var(--border-soft);
}
.app-window__bar .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-soft); }
.app-window__title {
  margin-left: 10px;
  font-size: 0.78rem;
  color: var(--gray);
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}
.app-window__body { padding: 22px; display: flex; flex-direction: column; gap: 18px; }

.app-upload__chart {
  position: relative;
  border-radius: var(--radius-md);
  background: rgba(2, 8, 23, 0.55);
  border: 1px solid var(--border-soft);
  padding: 10px;
}
.candles { width: 100%; height: 120px; display: block; }
.candles__grid { stroke: rgba(148, 163, 184, 0.12); stroke-width: 1; }
.app-upload__badge {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.7rem;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid var(--border-cyan);
  padding: 4px 10px;
  border-radius: 999px;
}
.app-modes { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.app-modes__pill {
  font-size: 0.72rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--gray);
}
.app-modes__pill.is-active {
  color: #01121F;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-color: transparent;
  font-weight: 600;
}

.app-analysis { border-top: 1px solid var(--border-soft); padding-top: 16px; }
.app-analysis__loading {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 12px;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,211,238,0.5); }
  70% { box-shadow: 0 0 0 8px rgba(34,211,238,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,211,238,0); }
}
.progress-ring { flex-shrink: 0; animation: spin 1.4s linear infinite; }
.progress-ring__track { fill: none; stroke: var(--border-soft); stroke-width: 2; }
.progress-ring__fill {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 59.7;
  stroke-dashoffset: 42;
  transform-origin: center;
}
@keyframes spin { to { transform: rotate(360deg); } }
.app-analysis__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mini-card {
  background: rgba(2, 8, 23, 0.5);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 12px;
}
.mini-card__label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.mini-card p { font-size: 0.8rem; color: var(--gray-light); line-height: 1.5; }

/* ===================== Structure line divider ===================== */
.structure-line {
  width: 100%;
  height: 44px;
  overflow: hidden;
  opacity: 0.5;
}
.structure-line svg { width: 100%; height: 100%; display: block; }
.structure-line polyline {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  transition: stroke-dashoffset 1.6s var(--ease);
}
.structure-line.is-visible polyline { stroke-dashoffset: 0; }
.structure-line--reverse { transform: scaleX(-1); }
.structure-line__node {
  fill: var(--cyan);
  opacity: 0;
  filter: drop-shadow(0 0 4px rgba(34, 211, 238, 0.8));
}
.structure-line.is-visible .structure-line__node { animation: nodePulse 1.8s var(--ease) forwards; }
@keyframes nodePulse {
  0% { opacity: 0; r: 1; }
  50% { opacity: 1; r: 4; }
  100% { opacity: 0.55; r: 2.5; }
}
@media (prefers-reduced-motion: reduce) {
  .structure-line__node { opacity: 0.55; animation: none; }
}

/* ===================== Sections ===================== */
.section { padding: 96px 0; position: relative; }
.section--panel { background: linear-gradient(180deg, var(--bg-deep), var(--bg-void)); }
.section--offer { background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(2, 132, 199, 0.12), transparent 70%), var(--bg-void); }

.section__header { max-width: 780px; margin: 0 auto 48px; text-align: center; }
.section__header h2 { font-size: clamp(1.6rem, 2.6vw + 0.6rem, 2.5rem); margin-bottom: 16px; }
.section__lead { color: var(--gray-light); font-size: 1.05rem; }
.section__closing {
  text-align: center;
  max-width: 640px;
  margin: 48px auto 0;
  font-size: 1.05rem;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 500;
}

/* ===================== Grid & Cards ===================== */
.grid { display: grid; gap: 22px; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--bento {
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(150px, auto);
  grid-auto-flow: dense;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  position: relative;
  overflow: hidden;
}
.card:hover { border-color: var(--border-cyan); transform: translateY(-3px); }
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.08);
  color: var(--cyan);
  margin-bottom: 14px;
}
.card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.card p { color: var(--gray-light); font-size: 0.94rem; }

.card--featured {
  grid-column: span 2;
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(160deg, rgba(34,211,238,0.08), var(--bg-card) 60%);
  border-color: var(--border-cyan);
}
.card--featured .card__icon { width: 50px; height: 50px; }
.card--featured h3 { font-size: 1.4rem; }
.card--featured p { max-width: 32ch; }
.card--wide { grid-column: span 2; }
.card__spark {
  width: 100%;
  height: 44px;
  margin-top: 16px;
  opacity: 0.7;
}
.card__spark polyline { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---- Cursor-tracked spotlight (cards, panels, tiles) ---- */
.spotlight { position: relative; }
.spotlight::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(220px circle at var(--x, 50%) var(--y, 50%), rgba(34, 211, 238, 0.14), transparent 70%);
  opacity: 0;
  transition: opacity 300ms ease;
  pointer-events: none;
  z-index: 0;
}
.spotlight:hover::before { opacity: 1; }
.spotlight > * { position: relative; z-index: 1; }

/* ===================== Tag grid & notice ===================== */
.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto 32px;
}
.tag-grid li {
  font-size: 0.88rem;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--gray-light);
  background: rgba(248, 250, 252, 0.02);
}
.notice {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  max-width: 720px;
  margin: 0 auto;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(245, 196, 81, 0.25);
  background: rgba(245, 196, 81, 0.06);
  color: var(--gray-light);
}
.notice svg { color: var(--gold); flex-shrink: 0; margin-top: 2px; }
.notice p { font-size: 0.9rem; }

/* ===================== Steps ===================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}
.steps__item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  position: relative;
}
.steps__index {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.steps__item h3 { font-size: 1.15rem; margin-bottom: 10px; }
.steps__item p { color: var(--gray-light); font-size: 0.94rem; }

/* ===================== Modes (tabs) ===================== */
.modes__tabs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}
.modes__tab-indicator {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(34,211,238,0.16), rgba(2,132,199,0.16));
  border: 1px solid var(--border-cyan);
  transition: transform 380ms var(--ease), width 380ms var(--ease);
  z-index: 0;
  pointer-events: none;
  opacity: 0;
}
.modes__tab-indicator.is-ready { opacity: 1; }
.modes__tab {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--gray-light);
  font-size: 0.88rem;
  font-weight: 500;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.modes__tab:hover { border-color: var(--border-cyan); color: var(--white); }
.modes__tab.is-active {
  border-color: transparent;
  color: var(--white);
}
.modes__tab svg { color: var(--cyan); }
@media (max-width: 480px) {
  .modes__tab-indicator { display: none; }
  .modes__tab.is-active {
    background: linear-gradient(135deg, rgba(34,211,238,0.16), rgba(2,132,199,0.16));
    border-color: var(--border-cyan);
  }
}

.modes__panel {
  display: none;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 44px;
}
.modes__panel.is-active { display: grid; animation: panelEnter 480ms var(--ease); }
@keyframes panelEnter {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .modes__panel.is-active { animation: none; }
}
.modes__panel-text h3 { font-size: 1.5rem; margin-bottom: 14px; }
.modes__panel-text p { color: var(--gray-light); margin-bottom: 12px; }
.modes__disclaimer {
  font-size: 0.85rem;
  color: var(--gold);
  border-left: 2px solid var(--gold);
  padding-left: 12px;
}
.modes__ideal { font-size: 0.9rem; color: var(--gray); }
.modes__ideal strong { color: var(--white); }

.mock-response {
  background: rgba(2, 8, 23, 0.6);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 22px;
}
.mock-response__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.mock-response p { color: var(--gray-light); font-size: 0.94rem; }

/* ===================== Demo ===================== */
.demo {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 32px;
  align-items: start;
}
.demo__input {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.demo__field { display: flex; flex-direction: column; gap: 8px; }
.demo__label { font-size: 0.78rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.06em; font-family: var(--font-display); }
.demo__chart {
  background: rgba(2, 8, 23, 0.55);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 8px;
}
.demo__select, .demo__input-text {
  background: rgba(2, 8, 23, 0.55);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--white);
}
.demo__btn { margin-top: 6px; width: 100%; }

.demo__output {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.demo__block {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 18px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}
.demo__block.is-shown { opacity: 1; transform: none; }
.demo__block--conclusion { grid-column: 1 / -1; border-color: var(--border-cyan); background: rgba(34,211,238,0.05); }
.demo__block-tag {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-bottom: 8px;
}
.demo__block p { font-size: 0.88rem; color: var(--gray-light); }

.disclaimer-text { text-align: center; color: var(--gray); font-size: 0.85rem; margin-top: 28px; }

/* ===================== Timeline ===================== */
.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 11px;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-cyan), transparent);
}
.timeline__item { position: relative; padding-top: 30px; }
.timeline__item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}
.timeline__item h3 { font-size: 1rem; margin-bottom: 8px; }
.timeline__item p { color: var(--gray-light); font-size: 0.88rem; }

/* ===================== Fit grid ===================== */
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 40px; }
.fit-card {
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border-soft);
}
.fit-card--yes { background: rgba(34, 211, 238, 0.05); border-color: var(--border-cyan); }
.fit-card--no { background: var(--bg-card); }
.fit-card h3 { font-size: 1.15rem; margin-bottom: 18px; }
.fit-card ul { display: flex; flex-direction: column; gap: 12px; }
.fit-card li { position: relative; padding-left: 26px; color: var(--gray-light); font-size: 0.94rem; }
.fit-card--yes li::before {
  content: '';
  position: absolute; left: 0; top: 6px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: rgba(34, 211, 238, 0.18);
  border: 1px solid var(--cyan);
}
.fit-card--no li::before {
  content: '';
  position: absolute; left: 0; top: 6px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--gray);
}

/* ===================== Compare ===================== */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.compare__col {
  border-radius: var(--radius-lg);
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
}
.compare__col h3 { font-size: 1.1rem; margin-bottom: 18px; color: var(--gray); }
.compare__col--highlight {
  background: linear-gradient(180deg, rgba(34,211,238,0.08), rgba(2,132,199,0.04));
  border-color: var(--border-cyan);
}
.compare__col--highlight h3 { color: var(--cyan); }
.compare__list { display: flex; flex-direction: column; gap: 12px; font-size: 0.94rem; }
.compare__list--neutral li { color: var(--gray); padding-left: 20px; position: relative; }
.compare__list--neutral li::before { content: '–'; position: absolute; left: 0; color: var(--gray); }
.compare__list--positive li { color: var(--gray-light); padding-left: 22px; position: relative; }
.compare__list--positive li::before {
  content: '';
  position: absolute; left: 0; top: 7px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ===================== Testimonials ===================== */
.testimonial {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.testimonial__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
}
.testimonial__author { display: flex; align-items: center; gap: 12px; }
.testimonial__avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.8rem;
  flex-shrink: 0;
}
.testimonial__author div { display: flex; flex-direction: column; }
.testimonial__author strong { font-size: 0.9rem; }
.testimonial__author span { font-size: 0.78rem; color: var(--gray); }

/* ===================== About ===================== */
.about {
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  gap: 48px;
  align-items: center;
}
.about__photo { position: relative; }
.about__photo picture { display: block; }
.about__photo-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  width: 90%;
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(34, 211, 238, 0.35), transparent 70%);
  filter: blur(50px);
  z-index: 0;
  pointer-events: none;
}
.about__photo-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-cyan);
}
.about__quote {
  position: relative;
  z-index: 2;
  margin: -40px 20px 0 auto;
  max-width: 82%;
  background: rgba(10, 32, 54, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
}
.about__quote p {
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--white);
  margin: 0 0 8px;
  line-height: 1.4;
}
.about__quote cite {
  font-style: normal;
  font-size: 0.78rem;
  color: var(--cyan);
}
.about__content h2 { margin-bottom: 18px; font-size: clamp(1.5rem, 2.4vw + 0.5rem, 2.2rem); }
.about__content p { color: var(--gray-light); margin-bottom: 14px; }
.about__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 24px;
}
.about__metrics div { border-top: 1px solid var(--border-soft); padding-top: 12px; }
.about__metrics dt { font-size: 0.78rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.about__metrics dd { margin: 0; font-family: var(--font-display); color: var(--cyan); font-size: 0.95rem; }

/* ===================== Offer ===================== */
.offer-card {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 0;
  background: linear-gradient(160deg, var(--bg-panel), var(--bg-deep));
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow);
  overflow: hidden;
}
.offer-card__main { padding: 48px; }
.offer-card__product { font-family: var(--font-display); color: var(--gray); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.82rem; margin-bottom: 14px; }
.offer-card__price {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}
.offer-card__price span { font-size: 1.4rem; vertical-align: super; margin-right: 4px; color: var(--cyan); }
.offer-card__price small { font-size: 1rem; color: var(--gray); font-weight: 400; }
.offer-card__tag {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--gold);
  border: 1px solid rgba(245,196,81,0.3);
  background: rgba(245,196,81,0.06);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.offer-card__items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}
.offer-card__items li {
  font-size: 0.9rem;
  color: var(--gray-light);
  padding-left: 24px;
  position: relative;
}
.offer-card__items li::before {
  content: '';
  position: absolute; left: 0; top: 6px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid var(--cyan);
}
.offer-card__cta { width: 100%; margin-bottom: 12px; }
.offer-card__microcopy { font-size: 0.8rem; color: var(--gray); margin-bottom: 4px; }
.offer-card__equivalence { font-size: 0.8rem; color: var(--gray); }

.offer-card__side {
  background: rgba(2, 8, 23, 0.4);
  border-left: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.badge-shield {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--gold);
}
.badge-shield span { font-family: var(--font-display); font-size: 0.9rem; color: var(--white); }

/* ===================== Guarantee ===================== */
.guarantee {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: flex-start;
  max-width: 780px;
}
.guarantee__icon {
  width: 76px; height: 76px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(245, 196, 81, 0.08);
  border: 1px solid rgba(245, 196, 81, 0.25);
  color: var(--gold);
  flex-shrink: 0;
}
.guarantee h2 { margin-bottom: 14px; font-size: clamp(1.4rem, 2vw + 0.5rem, 1.9rem); }
.guarantee p { color: var(--gray-light); margin-bottom: 10px; }
.guarantee__fine { font-size: 0.85rem; color: var(--gray); }

/* ===================== FAQ / Accordion ===================== */
.accordion { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.accordion__item {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
}
.accordion__item h3 { margin: 0; }
.accordion__trigger {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  font-size: 0.98rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.accordion__trigger::after {
  content: '+';
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--cyan);
  flex-shrink: 0;
  transition: transform var(--dur-fast) var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after { transform: rotate(45deg); }
.accordion__panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding: 0 24px;
  transition: max-height 420ms var(--ease), opacity 320ms ease, padding 420ms var(--ease);
}
.accordion__panel[aria-hidden="false"] { opacity: 1; padding: 0 24px 20px; }
.accordion__panel p { color: var(--gray-light); font-size: 0.92rem; }
@media (prefers-reduced-motion: reduce) {
  .accordion__panel { transition: none; }
}

/* ===================== CTA final ===================== */
.cta-final { position: relative; text-align: center; overflow: hidden; padding: 110px 0; }
.cta-final__inner { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.cta-final__inner h2 { font-size: clamp(1.7rem, 3vw + 0.5rem, 2.6rem); margin-bottom: 18px; }
.cta-final__inner p { color: var(--gray-light); margin-bottom: 32px; }
.cta-final__price { font-family: var(--font-display); font-size: 1.2rem; color: var(--cyan); margin-top: 14px; }

/* ===================== Footer ===================== */
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--border-soft); padding: 56px 0 32px; }
.footer__inner { display: grid; grid-template-columns: 1fr auto auto; gap: 20px 40px; align-items: center; }
.footer__brand { display: flex; align-items: center; gap: 10px; }
.footer__social, .footer__links { display: flex; gap: 20px; }
.footer__social a, .footer__links a { font-size: 0.88rem; color: var(--gray-light); }
.footer__social a:hover, .footer__links a:hover { color: var(--cyan); }
.footer__risk {
  grid-column: 1 / -1;
  font-size: 0.78rem;
  color: var(--gray);
  border-top: 1px solid var(--border-soft);
  padding-top: 24px;
  margin-top: 8px;
  line-height: 1.6;
}
.footer__copy { grid-column: 1 / -1; font-size: 0.78rem; color: var(--gray); }

/* ===================== Floating elements ===================== */
.back-to-top {
  position: fixed;
  bottom: 96px;
  right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 120;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

.mobile-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 130;
  padding: 12px 16px;
  background: rgba(2, 8, 23, 0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-soft);
  display: none;
}
.mobile-cta .btn { width: 100%; }

/* =========================================================
   Responsive breakpoints
========================================================= */
@media (max-width: 1200px) {
  :root { --container-w: 980px; }
}

@media (max-width: 992px) {
  .main-nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--bg-deep); z-index: 160; padding: 32px 24px; transform: translateX(100%); transition: transform var(--dur-med) var(--ease); overflow-y: auto; }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav__list { flex-direction: column; gap: 6px; }
  .main-nav__list a { display: block; padding: 14px 6px; font-size: 1.05rem; border-bottom: 1px solid var(--border-soft); }
  .main-nav__indicator { display: none; }
  .nav-toggle { display: flex; }
  .header__actions .btn--small { display: none; }

  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }

  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--bento { grid-template-columns: repeat(2, 1fr); }
  .card--featured { grid-column: span 2; grid-row: span 1; }
  .steps { grid-template-columns: 1fr; }
  .modes__panel { grid-template-columns: 1fr; padding: 30px; }
  .demo { grid-template-columns: 1fr; }
  .demo__output { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .timeline::before { display: none; }
  .fit-grid { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .about__photo-img { max-width: 280px; margin: 0 auto; }
  .about__quote { max-width: 280px; margin: -32px auto 0; }
  .offer-card { grid-template-columns: 1fr; }
  .offer-card__side { border-left: none; border-top: 1px solid var(--border-soft); }
  .guarantee { grid-template-columns: 1fr; text-align: center; }
  .guarantee__icon { margin: 0 auto; }
  .footer__inner { grid-template-columns: 1fr; text-align: center; }
  .footer__brand { justify-content: center; }
  .footer__social, .footer__links { justify-content: center; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .hero { padding-top: calc(var(--header-h) + 40px); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .grid--4 { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: 1fr; }
  .grid--bento { grid-template-columns: 1fr; }
  .card--featured, .card--wide { grid-column: span 1; grid-row: span 1; }
  .timeline { grid-template-columns: 1fr; }
  .offer-card__items { grid-template-columns: 1fr; }
  .mobile-cta { display: block; }
  .back-to-top { bottom: 88px; }
  body { padding-bottom: 74px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero__title { font-size: clamp(1.7rem, 8vw, 2.2rem); }
  .offer-card__main { padding: 32px 24px; }
  .offer-card__price { font-size: 2.5rem; }
  .modes__tabs { justify-content: center; flex-wrap: wrap; gap: 8px; }
  .modes__tab { font-size: 0.82rem; padding: 10px 14px; }
  .app-analysis__cards { grid-template-columns: 1fr; }
}