/* ============================================================
   ULTRAPACK — Premium Landing Page
   Dark graphite + electric violet/violet/indigo accents
   ============================================================ */

:root {
  --bg: #0a0a0e;
  --bg-alt: #0d0d13;
  --bg-soft: #101018;
  --card: #14141d;
  --card-hi: #191924;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.12);
  --text: #f5f5f7;
  --text-2: #a3a3b4;
  --text-3: #717185;
  --purple: #a855f7;
  --violet: #8b5cf6;
  --indigo: #6366f1;
  --grad: linear-gradient(120deg, #a855f7 0%, #8b5cf6 45%, #6366f1 100%);
  --grad-soft: linear-gradient(120deg, rgba(168, 85, 247, 0.16), rgba(99, 102, 241, 0.16));
  --glow: 0 0 60px rgba(139, 92, 246, 0.28);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 18px 40px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --radius-lg: 26px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --nav-h: 72px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 20px;
}

.container--narrow {
  max-width: 860px;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
  text-align: center;
}

.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.35), 0 2px 0 rgba(255, 255, 255, 0.22) inset;
  padding: 16px 34px;
  font-size: 0.95rem;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 44px rgba(139, 92, 246, 0.5), 0 2px 0 rgba(255, 255, 255, 0.22) inset;
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--ghost {
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
  padding: 12px 22px;
  font-size: 0.8rem;
}

.btn--ghost:hover {
  border-color: var(--violet);
  color: #fff;
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.2);
}

.btn--sm {
  padding: 10px 18px;
  font-size: 0.8rem;
  border-radius: 12px;
}

.btn--lg {
  padding: 18px 42px;
  font-size: 1.02rem;
}

.btn--block {
  width: 100%;
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(10, 10, 14, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.98rem;
}

.nav__logo-mark {
  width: 14px;
  height: 14px;
  border-radius: 5px;
  background: var(--grad);
  box-shadow: var(--glow);
}

/* ---------- Badge ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-2);
  text-transform: uppercase;
}

.badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 12px var(--violet);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 64px 0 88px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(560px 380px at 78% 12%, rgba(139, 92, 246, 0.16), transparent 60%),
    radial-gradient(480px 340px at 8% 88%, rgba(99, 102, 241, 0.1), transparent 60%);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}

.hero__content {
  max-width: 620px;
}

.hero__title {
  font-size: clamp(2.3rem, 7vw, 3.9rem);
  margin: 22px 0 20px;
}

.hero__sub {
  font-size: 1.05rem;
  color: var(--text-2);
  margin-bottom: 30px;
  max-width: 560px;
}

.hero__note {
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--text-3);
}

/* ---------- Mockup ---------- */

.mockup {
  display: flex;
  flex-direction: column;
  gap: 16px;
  perspective: 1400px;
}

.mockup__frame {
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  box-shadow: var(--shadow-card), 0 0 90px rgba(139, 92, 246, 0.14);
  transform: rotateX(3deg) rotateY(-3deg);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.mockup:hover .mockup__frame {
  transform: rotateX(0) rotateY(0);
  box-shadow: var(--shadow-card), 0 0 110px rgba(139, 92, 246, 0.24);
}

.mockup__titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}

.mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mockup__dot--r { background: #ff5f57; }
.mockup__dot--y { background: #febc2e; }
.mockup__dot--g { background: #28c840; }

.mockup__tab {
  font-size: 0.68rem;
  color: var(--text-3);
  margin-left: 10px;
  letter-spacing: 0.05em;
}

.mockup__tab--active {
  color: var(--text-2);
  border-bottom: 2px solid var(--violet);
  padding-bottom: 3px;
}

.mockup__body {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  min-height: 360px;
}

.mockup__panel {
  padding: 16px 14px;
  border-right: 1px solid var(--line);
  background: var(--bg-soft);
  overflow: hidden;
}

.mockup__panel-title {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--violet);
  font-weight: 700;
  margin-bottom: 14px;
}

.mockup__folder,
.mockup__file {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.74rem;
  color: var(--text-2);
  padding: 5px 0;
  white-space: nowrap;
}

.mockup__folder-icon,
.mockup__file-icon {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  border-radius: 3px;
}

.mockup__folder-icon {
  background: var(--violet);
  opacity: 0.85;
}

.mockup__file-icon {
  background: var(--indigo);
  opacity: 0.8;
}

.mockup__stage {
  display: flex;
  flex-direction: column;
  background: var(--card);
}

.mockup__viewport {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 14px;
  border-radius: 12px;
  overflow: hidden;
  background: #0e0e16;
}

.mockup__preview-grad {
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
}

.mockup__preview-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(200px 140px at 50% 40%, rgba(168, 85, 247, 0.35), transparent 70%);
  animation: pulse 3.4s ease-in-out infinite;
}

.mockup__preview-ring {
  position: absolute;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(168, 85, 247, 0.5);
  border-radius: 50%;
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.35);
  animation: ring 3.4s ease-in-out infinite;
}

.mockup__preview-text {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.3em;
  font-size: 1.3rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(0.98); }
  50% { opacity: 1; transform: scale(1.02); }
}

@keyframes ring {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.12); opacity: 1; }
}

.mockup__controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.mockup__play {
  width: 20px;
  height: 20px;
  background: var(--grad);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  flex-shrink: 0;
}

.mockup__timeline {
  position: relative;
  flex: 1;
  height: 18px;
  border-radius: 6px;
  background: var(--bg-soft);
  overflow: visible;
}

.mockup__timeline-track {
  position: absolute;
  inset: 4px 0;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
}

.mockup__timeline-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 46%;
  border-radius: 4px;
  background: var(--grad);
  opacity: 0.9;
}

.mockup__timeline-marker {
  position: absolute;
  top: -3px;
  bottom: -3px;
  left: 46%;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.mockup__caption {
  font-size: 0.86rem;
  color: var(--text-3);
  text-align: center;
}

.mockup__caption strong {
  color: var(--text-2);
}

/* ---------- Sections ---------- */

.section {
  padding: 88px 0;
}

.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--line);
}

.section__head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}

.section__title {
  font-size: clamp(1.8rem, 4.6vw, 2.8rem);
  margin-bottom: 18px;
}

.section__lead {
  color: var(--text-2);
  font-size: 1.02rem;
}

.section__link {
  margin-top: 44px;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
}

/* ---------- Problem ---------- */

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 8px;
}

.problem-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.problem-card:hover {
  border-color: rgba(139, 92, 246, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.15), 0 20px 44px rgba(0, 0, 0, 0.4);
}

.problem-card__num {
  position: absolute;
  top: -14px;
  right: 8px;
  font-family: var(--font-display);
  font-size: 4.6rem;
  font-weight: 700;
  color: rgba(139, 92, 246, 0.1);
  line-height: 1;
}

.problem-card h3 {
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  position: relative;
}

.problem-card p {
  color: var(--text-2);
  font-size: 0.92rem;
  position: relative;
}

/* ---------- Intro tiles ---------- */

.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.tile {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.tile:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.4);
}

.tile__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  background: var(--grad-soft);
  border: 1px solid rgba(168, 85, 247, 0.35);
  margin-bottom: 20px;
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.16);
}

.tile__title {
  font-size: 1.02rem;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.tile__title span {
  color: var(--violet);
}

.tile__text {
  color: var(--text-2);
  font-size: 0.9rem;
}

/* ---------- Big number ---------- */

.bignum {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.bignum__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(700px 420px at 50% 10%, rgba(139, 92, 246, 0.14), transparent 62%),
    var(--bg);
}

.bignum__number {
  font-family: var(--font-display);
  font-size: clamp(6rem, 20vw, 11rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  text-shadow: 0 0 80px rgba(139, 92, 246, 0.35);
}

.bignum__label {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  letter-spacing: 0.24em;
  color: var(--text-2);
  margin: 20px 0 46px;
}

.bignum__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin-inline: auto;
}

.bignum__chip {
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line-strong);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  color: var(--text-2);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.bignum__chip:hover {
  border-color: rgba(139, 92, 246, 0.55);
  color: var(--text);
  transform: translateY(-2px);
}

.bignum__chip span {
  color: var(--violet);
}

/* ---------- Benefits ---------- */

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.benefit {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.benefit:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-4px);
}

.benefit__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  font-size: 1.3rem;
  border-radius: 13px;
  background: var(--grad-soft);
  border: 1px solid rgba(168, 85, 247, 0.35);
  margin-bottom: 20px;
}

.benefit h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.benefit p {
  color: var(--text-2);
  font-size: 0.92rem;
}

/* ---------- Showcase ---------- */

.showcase {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(139, 92, 246, 0.5) transparent;
  margin-inline: -20px;
  padding-inline: 20px;
}

.showcase__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 78vw);
  gap: 16px;
}

.show-card {
  scroll-snap-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.show-card:hover {
  transform: translateY(-5px) scale(1.01);
  border-color: rgba(139, 92, 246, 0.45);
  box-shadow: 0 26px 54px rgba(0, 0, 0, 0.45);
}

.show-card figcaption {
  padding: 14px 18px;
  font-size: 0.82rem;
  color: var(--text-2);
  border-top: 1px solid var(--line);
}

.show-card__visual {
  position: relative;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0e0e16;
}

.cv-label {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.24em;
  font-size: 0.82rem;
  color: var(--text);
  z-index: 2;
}

/* shake */
.show-card__visual--shake {
  background:
    radial-gradient(200px 120px at 50% 45%, rgba(139, 92, 246, 0.3), transparent 70%),
    #0e0e16;
}

.show-card__visual--shake .cv-motion {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, transparent 0 26px, rgba(168, 85, 247, 0.14) 26px 28px);
  animation: slide 1.4s linear infinite;
}

@keyframes slide {
  to { transform: translateX(28px); }
}

/* zoom */
.show-card__visual--zoom .cv-zoom {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  color: #fff;
  border: 2px solid var(--violet);
  padding: 18px 26px;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
  animation: zoompulse 2.2s ease-in-out infinite;
}

@keyframes zoompulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.14); }
}

/* text */
.show-card__visual--text .cv-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: 0.06em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: textslide 2.6s ease-in-out infinite;
}

@keyframes textslide {
  0%, 100% { transform: translateX(0); letter-spacing: 0.06em; }
  50% { transform: translateX(6px); letter-spacing: 0.2em; }
}

/* color */
.show-card__visual--color {
  flex-direction: column;
  gap: 8px;
}

.cv-color-bar {
  width: 120px;
  height: 12px;
  border-radius: 999px;
}

.cv-color-bar:nth-child(1) { background: linear-gradient(90deg, #0f0f1a, #6d28d9); }
.cv-color-bar:nth-child(2) { background: linear-gradient(90deg, #6d28d9, #f97316); }
.cv-color-bar:nth-child(3) { background: linear-gradient(90deg, #f97316, #eef2ff); }

/* overlay */
.show-card__visual--overlay .cv-noise {
  position: absolute;
  inset: 0;
  background:
    repeating-conic-gradient(rgba(168, 85, 247, 0.1) 0% 0.5%, transparent 0.5% 1%),
    repeating-linear-gradient(0deg, rgba(168, 85, 247, 0.07) 0 2px, transparent 2px 5px);
  animation: shift 3s linear infinite;
}

@keyframes shift {
  to { transform: translate(10px, 6px); }
}

/* aep */
.show-card__visual--aep {
  flex-direction: column;
  gap: 10px;
  padding: 24px;
}

.cv-aep-row {
  width: 82%;
  height: 12px;
  border-radius: 6px;
  background: rgba(168, 85, 247, 0.28);
}

.cv-aep-row:nth-child(2) { width: 66%; background: rgba(139, 92, 246, 0.4); }

.cv-aep-cursor {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px var(--violet);
  align-self: flex-start;
  margin-left: 30px;
  animation: cursorjump 2s ease-in-out infinite;
}

@keyframes cursorjump {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(40px, 8px); }
}

/* sfx */
.show-card__visual--sfx .cv-wave {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 40%, rgba(168, 85, 247, 0.5) 40% 42%, transparent 42% 44%, rgba(139, 92, 246, 0.6) 44% 47%, transparent 47% 52%, rgba(168, 85, 247, 0.5) 52% 55%, transparent 55% 60%, rgba(139, 92, 246, 0.5) 60% 63%, transparent 63% 100%);
  animation: wave 1.8s ease-in-out infinite alternate;
}

@keyframes wave {
  from { opacity: 0.7; transform: scaleY(0.7); }
  to { opacity: 1; transform: scaleY(1); }
}

/* edit */
.show-card__visual--edit {
  background:
    radial-gradient(220px 150px at 50% 42%, rgba(168, 85, 247, 0.5), transparent 68%),
    linear-gradient(120deg, #14141f, #0d0d16);
}

.show-card__visual--edit .cv-edit-glow {
  position: absolute;
  inset: 0;
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.4) inset;
}

.show-card__visual--edit .cv-label {
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  color: #fff;
  text-shadow: 0 0 24px rgba(168, 85, 247, 0.8);
}

/* ---------- Use cases ---------- */

.usecase-grid {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.usecase {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.usecase:hover {
  border-color: rgba(139, 92, 246, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.12), 0 18px 40px rgba(0, 0, 0, 0.4);
}

.usecase__glyph {
  color: var(--violet);
  font-size: 0.72rem;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--grad-soft);
  border: 1px solid rgba(168, 85, 247, 0.3);
  flex-shrink: 0;
}

/* ---------- FAQ ---------- */

.faq {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq__item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq__item[open] {
  border-color: rgba(139, 92, 246, 0.4);
}

.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
}

.faq__q::-webkit-details-marker {
  display: none;
}

.faq__icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq__icon::before,
.faq__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--violet);
  border-radius: 2px;
  transition: transform 0.22s ease;
}

.faq__icon::before {
  width: 14px;
  height: 2px;
}

.faq__icon::after {
  width: 2px;
  height: 14px;
}

.faq__item[open] .faq__icon::after {
  transform: translate(-50%, -50%) rotate(90deg) scaleY(0);
}

.faq__a {
  padding: 0 24px 22px;
  color: var(--text-2);
  font-size: 0.95rem;
}

.faq__a code {
  color: var(--violet);
  background: rgba(139, 92, 246, 0.12);
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 0.85em;
}

/* ---------- Offer ---------- */

.offer {
  position: relative;
  overflow: hidden;
}

.offer__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(640px 420px at 50% 20%, rgba(139, 92, 246, 0.16), transparent 64%),
    var(--bg);
}

.offer-card {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 46px 30px;
  text-align: center;
  box-shadow: var(--shadow-card), 0 0 90px rgba(139, 92, 246, 0.12);
  position: relative;
}

.offer-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, rgba(168, 85, 247, 0.5), transparent 40%, transparent 60%, rgba(99, 102, 241, 0.4));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.offer-card__title {
  font-size: clamp(1.8rem, 4.6vw, 2.5rem);
  margin-bottom: 30px;
}

.offer-card__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 12px;
  max-width: 620px;
  margin: 0 auto 34px;
}

.offer-card__item {
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-2);
}

.offer-card__item span {
  color: var(--violet);
}

.offer-card__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  margin-bottom: 30px;
}

.offer-card__currency {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--violet);
}

.offer-card__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.4rem, 10vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.offer-card__when {
  color: var(--text-3);
  font-size: 0.9rem;
}

.offer-card__note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--text-3);
}

/* ---------- Final CTA ---------- */

.final {
  text-align: center;
  padding: 110px 0;
}

.final__title {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  margin-bottom: 18px;
}

.final__text {
  color: var(--text-2);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 34px;
}

.final__note {
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  background: var(--bg-alt);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  text-align: center;
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.1em;
  font-size: 0.92rem;
}

.footer__text {
  color: var(--text-3);
  font-size: 0.82rem;
  max-width: 420px;
}

/* ---------- Mobile CTA bar ---------- */

.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  padding: 12px 0 calc(12px + env(safe-area-inset-bottom));
  background: rgba(12, 12, 18, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line-strong);
  transform: translateY(110%);
  transition: transform 0.35s ease;
}

.mobile-cta.is-visible {
  transform: translateY(0);
}

.mobile-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.mobile-cta__label {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.mobile-cta__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.mobile-cta__files {
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
}

/* ---------- Reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */

@media (min-width: 640px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
  .intro-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .usecase-grid { grid-template-columns: repeat(3, 1fr); }
  .showcase__track { grid-auto-columns: minmax(260px, 320px); }
  .offer-card { padding: 56px 48px; }
}

@media (min-width: 1024px) {
  .hero { padding: 84px 0 120px; }
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: 64px; }
  .intro-grid { grid-template-columns: repeat(4, 1fr); }
  .benefits-grid { grid-template-columns: repeat(4, 1fr); }
  .usecase-grid { grid-template-columns: repeat(4, 1fr); }
  .showcase { overflow: visible; padding-inline: 0; margin-inline: 0; scroll-snap-type: none; }
  .showcase__track { grid-auto-flow: row; grid-template-columns: repeat(4, 1fr); grid-auto-columns: auto; }
  .mobile-cta { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}