/* Microsurgery Arena — modern stylesheet */

:root {
  --bg: #0a0a0b;
  --bg-elev: #111114;
  --bg-elev-2: #17171c;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f4f4f5;
  --text-dim: #a8a8ad;
  --text-mute: #76767c;
  --accent: #149dcc;
  --accent-2: #ff3b69;
  --accent-glow: rgba(20, 157, 204, 0.35);
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.45);
  --container: 1240px;
  --serif: 'Bricolage Grotesque', 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --sans: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  letter-spacing: -0.005em;
  font-feature-settings: "ss01", "cv01";
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
  font-variation-settings: "wdth" 100;
}

h1 { font-size: clamp(2.8rem, 7vw, 6rem); font-weight: 700; letter-spacing: -0.05em; }
h2 { font-size: clamp(2.1rem, 4.6vw, 3.8rem); }
h3 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); }
h4 { font-size: 1.2rem; font-family: var(--sans); font-weight: 700; letter-spacing: -0.015em; line-height: 1.25; }

p { margin: 0 0 1rem; color: var(--text-dim); }

strong { color: var(--text); font-weight: 700; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section-sm { padding: 80px 0; }
.section-lg { padding: 160px 0; }

.section-head {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.lead {
  font-size: 1.15rem;
  color: var(--text-dim);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: #1ab2e6;
  box-shadow: 0 12px 32px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  transform: translateY(-2px);
}

.btn-sm { padding: 10px 20px; font-size: 0.8rem; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), padding 0.3s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 10, 11, 0.78);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  padding: 12px 0;
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.025em;
}
.brand img { width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0; }
.brand-mark { color: var(--text); white-space: nowrap; }
.brand-mark em { color: var(--accent); font-style: normal; font-weight: 700; }

.nav-links {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  padding: 10px 16px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: 999px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 9px; right: 9px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 24px; }
.nav-toggle.is-open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .nav-inner { gap: 12px; }
  .brand-mark { font-size: 0.95rem; }

  .nav-links {
    position: absolute;
    inset: auto;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    flex-direction: column;
    gap: 4px;
    padding: 14px;
    background: rgba(15, 15, 18, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }
  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links a { padding: 14px 18px; font-size: 1rem; display: block; }
}

@media (max-width: 420px) {
  .brand img { width: 30px; height: 30px; }
  .brand-mark { font-size: 0.86rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 0 100px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(20, 157, 204, 0.18), transparent 70%),
    radial-gradient(40% 40% at 80% 100%, rgba(255, 59, 105, 0.10), transparent 70%),
    linear-gradient(180deg, #0a0a0b 0%, #050507 100%);
  z-index: -1;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  z-index: -1;
}

.hero h1 .accent { color: var(--accent); font-style: normal; }

.hero-quote {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--text);
}
.hero-quote strong { font-weight: 800; }

.hero-subtitle {
  margin: 24px auto 0;
  max-width: 620px;
  font-size: 1.2rem;
  color: var(--text-dim);
}
.hero-subtitle strong { color: var(--text); letter-spacing: 0.04em; }

.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-arrow {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  animation: floatY 2.4s ease-in-out infinite;
  transition: background 0.3s var(--ease);
}
.hero-arrow:hover { background: rgba(255,255,255,0.08); }
.hero-arrow svg { width: 18px; height: 18px; }

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

/* Hero variants */
.hero-image {
  background-size: cover;
  background-position: center;
}
.hero-image::before {
  background:
    linear-gradient(180deg, rgba(10,10,11,0.55) 0%, rgba(10,10,11,0.85) 100%);
}

/* ---------- Split with video ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split.reverse > :first-child { order: 2; }

.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
  background: #000;
}
.video-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split.reverse > :first-child { order: 0; }
}

/* ---------- Features grid (Anytime/Anywhere section) ---------- */
.features {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 36px;
  align-items: center;
}
.features-col { display: flex; flex-direction: column; gap: 28px; }
.features-img img {
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 20px 50px rgba(0,0,0,0.5));
}

.feature-card {
  padding: 28px;
  background: linear-gradient(180deg, var(--bg-elev) 0%, var(--bg-elev-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px rgba(20, 157, 204, 0.12);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(20, 157, 204, 0.12);
  color: var(--accent);
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h4 { margin: 0 0 8px; }
.feature-card p { margin: 0; font-size: 0.96rem; }

@media (max-width: 1024px) {
  .features { grid-template-columns: 1fr; }
  .features-img { order: -1; max-width: 480px; margin: 0 auto; }
}

/* ---------- Product showcase ---------- */
.product {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.product-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.product h2 strong { color: var(--accent); }
.product-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.product-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 12px;
}
.product-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.price {
  font-family: var(--serif);
  font-size: clamp(3rem, 5.4vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  margin: 28px 0 8px;
  color: var(--text);
  line-height: 1;
}
.price em { color: var(--accent); font-style: normal; font-weight: 800; }

@media (max-width: 880px) {
  .product { grid-template-columns: 1fr; gap: 40px; }
}

/* ---------- Centered video block ---------- */
.video-block {
  max-width: 980px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
}

/* ---------- Social ---------- */
.social {
  text-align: center;
}
.social-list {
  display: inline-flex;
  gap: 14px;
  margin-top: 28px;
}
.social-list a {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--text);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}
.social-list a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}
.social-list svg { width: 20px; height: 20px; }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  background: var(--bg-elev);
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), filter 0.4s var(--ease);
}
.gallery-item::after {
  content: '+';
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  color: #fff;
  background: rgba(10, 10, 11, 0.55);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.gallery-item:hover img { transform: scale(1.06); filter: brightness(0.85); }
.gallery-item:hover::after { opacity: 1; }

@media (max-width: 1024px) { .gallery { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(5, 5, 7, 0.92);
  backdrop-filter: blur(10px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  width: 48px; height: 48px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  cursor: pointer;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.lightbox-close { top: 24px; right: 24px; }
.lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255,255,255,0.18); }

/* ---------- Creators (borderless, slim portraits) ---------- */
.creators {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(48px, 8vw, 120px) clamp(40px, 8vw, 110px);
  max-width: 820px;
  margin: 0 auto;
  justify-items: center;
}
.creator {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 26px;
  max-width: 240px;
}
.creator-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: transparent;
  border-radius: 8px;
  isolation: isolate;
}
.creator-photo::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(20,157,204,0.18) 0%, transparent 35%, transparent 70%, rgba(255,59,105,0.12) 100%);
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
  transition: opacity 0.6s var(--ease);
}
.creator-photo::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -22px;
  width: 60%;
  height: 18px;
  transform: translateX(-50%);
  background: radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,0.55), transparent 70%);
  filter: blur(6px);
  pointer-events: none;
}
.creator-photo img {
  position: relative;
  z-index: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 25%;
  filter: grayscale(0.1) contrast(1.04);
  transition: transform 1.1s var(--ease), filter 0.6s var(--ease);
}
.creator:hover .creator-photo img {
  transform: scale(1.05);
  filter: grayscale(0) contrast(1.06);
}
.creator:hover .creator-photo::before { opacity: 0.95; }

.creator-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.creator-name {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--text);
}
.creator-name strong {
  display: block;
  font-weight: 800;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.creator-role {
  margin: -6px 0 0;
  font-size: 0.74rem;
  color: var(--text-mute);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.creator-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  transition: color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}
.creator-link:hover {
  color: var(--text);
  background: rgba(20, 157, 204, 0.2);
  transform: translateY(-1px);
}
.creator-link svg { width: 14px; height: 14px; }

@media (max-width: 720px) {
  .creators { grid-template-columns: 1fr; max-width: 280px; }
}

/* ---------- About / acknowledgements ---------- */
.ack {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.ack img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
@media (max-width: 880px) { .ack { grid-template-columns: 1fr; } }

/* ---------- Mentors (large featured portraits) ---------- */
.mentors {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 9vw, 120px);
  max-width: 1080px;
  margin: 0 auto;
}
.mentor {
  display: grid;
  grid-template-columns: minmax(200px, 260px) 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.mentor.flip {
  grid-template-columns: 1fr minmax(200px, 260px);
}
.mentor.flip .mentor-photo { order: 2; }
.mentor.flip .mentor-body { order: 1; text-align: right; }

.mentor-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 999px;
  isolation: isolate;
  box-shadow: 0 24px 50px rgba(0,0,0,0.45);
}
.mentor-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.35) 100%);
  pointer-events: none;
}
.mentor-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  image-rendering: -webkit-optimize-contrast;
  filter: grayscale(0.06) contrast(1.03);
  transition: transform 1s var(--ease), filter 0.6s var(--ease);
}
.mentor:hover .mentor-photo img {
  transform: scale(1.05);
  filter: grayscale(0) contrast(1.05);
}

.mentor-tag {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.mentor-name {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text);
}
.mentor-bio {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-dim);
  margin: 0;
  max-width: 56ch;
}
.mentor.flip .mentor-bio { margin-left: auto; }

@media (max-width: 760px) {
  .mentor,
  .mentor.flip {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 24px;
  }
  .mentor.flip .mentor-photo { order: 0; }
  .mentor.flip .mentor-body { order: 1; text-align: left; }
  .mentor-photo { max-width: 320px; }
  .mentor.flip .mentor-bio { margin-left: 0; }
}

/* ---------- Divider with text ---------- */
.divider {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 720px;
  margin: 0 auto;
}
.divider hr {
  flex: 1;
  border: 0;
  border-top: 1px solid var(--line-strong);
}
.divider span {
  color: var(--text-dim);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

/* ---------- Slider (BAT-2PD + Showcase) ---------- */
.slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #050507;
  box-shadow: var(--shadow-md);
}
.slider-track {
  position: relative;
  aspect-ratio: 16 / 9;
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.9s var(--ease);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.slide.is-active { opacity: 1; }

/* Showcase variant: full image visible (no cropping), taller frame, soft gradient backdrop */
.slider-showcase {
  background:
    radial-gradient(120% 80% at 50% 50%, #14171c 0%, #08090b 70%);
}
.slider-showcase .slider-track { aspect-ratio: 16 / 10; }
.slider-showcase .slide {
  background-size: contain;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px; height: 48px;
  padding: 0;
  border-radius: 50%;
  background: rgba(10, 10, 11, 0.55);
  border: 1px solid var(--line-strong);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
  z-index: 3;
  backdrop-filter: blur(6px);
}
.slider-btn:hover { background: rgba(20, 157, 204, 0.78); transform: translateY(-50%) scale(1.05); }
.slider-btn svg { width: 22px; height: 22px; display: block; }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }

.slider-dots {
  position: absolute;
  bottom: 20px;
  left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
  z-index: 3;
  padding: 0;
}
.slider-dot {
  width: 10px;
  height: 10px;
  flex: 0 0 10px;
  padding: 0;
  margin: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.55);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  line-height: 0;
  font-size: 0;
  box-sizing: border-box;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.slider-dot:hover { background: rgba(255, 255, 255, 0.7); }
.slider-dot.is-active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.25);
}

@media (max-width: 700px) {
  .slider-btn { width: 40px; height: 40px; }
  .slider-prev { left: 10px; }
  .slider-next { right: 10px; }
  .slider-dots { bottom: 14px; }
}

/* ---------- Info band (callouts / definitions) ---------- */
.info-band {
  position: relative;
  padding: 96px 0;
  background:
    linear-gradient(135deg, rgba(20,157,204,0.10) 0%, rgba(20,157,204,0.02) 60%, transparent 100%),
    var(--bg-elev);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.info-band::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.info-band-inner {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.info-band-inner .eyebrow { justify-content: center; }
.info-band-inner .eyebrow::before { display: none; }
.info-band-quote {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.4vw, 1.95rem);
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0;
  font-weight: 500;
}
.info-band-quote strong { font-weight: 700; }
.info-band-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  margin-bottom: 28px;
  box-shadow: 0 10px 30px var(--accent-glow);
}
.info-band-mark svg { width: 26px; height: 26px; }

@media (max-width: 700px) {
  .info-band { padding: 64px 0; }
}

/* ---------- App / HUD section ---------- */
.app-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
@media (max-width: 900px) {
  .app-block { grid-template-columns: 1fr; }
}

.install-steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 28px 0 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.install-steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 56px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 0.98rem;
  line-height: 1.5;
}
.install-steps li::before {
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}
.install-steps b { color: var(--text); }
.install-steps code {
  font-family: 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: rgba(20, 157, 204, 0.12);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: 6px;
}
.install-steps .icon {
  display: inline-flex;
  vertical-align: -3px;
  width: 16px; height: 16px;
  margin: 0 2px;
}
.install-steps .icon svg { width: 100%; height: 100%; }

/* Phone mockup with HUD screen preview */
.phone-mock {
  position: relative;
  margin: 0 auto;
  width: clamp(280px, 95%, 480px);
  aspect-ratio: 18 / 11;
  border-radius: 28px;
  background: #0e0e10;
  border: 2px solid #1f1f24;
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.55),
    inset 0 0 0 6px #0a0a0b;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.phone-mock::before,
.phone-mock::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 6px;
  height: 50px;
  background: #1f1f24;
  border-radius: 4px;
  transform: translateY(-50%);
}
.phone-mock::before { left: -3px; }
.phone-mock::after  { right: -3px; }

.phone-screen {
  position: relative;
  width: 100%; height: 100%;
  border-radius: 14px;
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 50% 110%, #F5F7FA 0%, #FFFFFF 60%, #FAFBFC 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.phone-screen .glow {
  position: absolute;
  inset: -10% -10% auto auto;
  width: 60%; height: 60%;
  background: radial-gradient(circle, rgba(243,156,18,0.35), rgba(243,156,18,0));
  filter: blur(20px);
}
.phone-screen .glow.two {
  inset: auto auto -10% -10%;
  background: radial-gradient(circle, rgba(20,157,204,0.30), rgba(20,157,204,0));
}
.phone-screen img {
  position: relative;
  z-index: 1;
  width: 38%;
  max-width: 130px;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.18));
}
.phone-screen .label {
  position: absolute;
  bottom: 14px;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: #0F1115;
  z-index: 1;
}

/* ---------- Footer social ---------- */
.footer-social {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: 0 0 18px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text-dim);
  transition: background 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}
.footer-social svg { width: 18px; height: 18px; }

/* ---------- Footer ---------- */
.footer {
  padding: 48px 0;
  background: #050506;
  border-top: 1px solid var(--line);
  text-align: center;
}
.footer p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--sans);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
}
.footer-brand img { width: 28px; height: 28px; border-radius: 6px; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }
.reveal.delay-4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}