:root {
  --color-bg: #161826;
  --color-surface: #232532;
  --color-text: #e9e9ed;
  --color-accent: #9184d9;
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  --color-neutral-100: #f3f5fe;
  --color-neutral-200: #e4e7f5;
  --color-neutral-300: #cfd3e5;
  --color-neutral-400: #b2b6ca;
  --color-neutral-500: #9397ab;
  --color-neutral-600: #75798c;
  --color-neutral-700: #595d6c;
  --color-neutral-800: #3f424d;
  --color-neutral-900: #292b31;

  --color-accent-200: #e7e5fe;
  --color-accent-300: #d2cefd;
  --color-accent-400: #b5abfc;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-md: 0 0 0 1px #595d6c, 0 6px 18px rgba(0,0,0,.55);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-accent-300); text-decoration: none; }
a:hover { color: var(--color-accent-200); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--font-heading); font-weight: 500; }

.page {
  min-height: 100vh;
  background: radial-gradient(120% 60% at 12% 0%, #1d2033 0%, var(--color-bg) 60%);
  padding: 0 6vw 120px;
}

.site-header { display: flex; align-items: baseline; gap: 24px; padding: 28px 0 0; flex-wrap: wrap; }
.site-header nav { display: flex; gap: 26px; font-size: 14px; color: var(--color-neutral-400); }

/* scroll reveal — only hidden when JS is running */
.js [data-reveal] {
  opacity: 0; transform: translateY(18px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
}

.hero { max-width: 820px; padding: 14vh 0 12vh; }
.hero h1 { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.1; margin-bottom: 8px; letter-spacing: -.02em; text-wrap: pretty; }
.hero .subtitle { font-family: var(--font-heading); font-size: clamp(20px, 2.4vw, 30px); line-height: 1.2; color: var(--color-accent-300); margin-bottom: 32px; }
.hero p { font-size: 19px; line-height: 1.6; color: var(--color-neutral-300); max-width: 620px; text-wrap: pretty; }

.divider {
  height: 1px; margin-bottom: 64px;
  background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent);
}
.section-label { font-size: 14px; letter-spacing: .16em; text-transform: uppercase; color: var(--color-neutral-400); }
.case-intro { margin-bottom: 80px; }

.case {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 56px; align-items: center; margin-bottom: 140px;
}
.case:last-of-type { margin-bottom: 120px; }

.phones { display: flex; gap: 14px; align-items: flex-start; }
.phone {
  flex: 1; position: relative; aspect-ratio: 9 / 19.5;
  border-radius: 22px; padding: 5px;
  background: linear-gradient(160deg, #2f3140, #1a1c27);
  border: 1px solid var(--color-neutral-800);
  box-shadow: var(--shadow-md);
}
.phone:nth-child(2) { margin-top: 26px; }
.phone:nth-child(3) { margin-top: 52px; }
.screen { width: 100%; height: 100%; border-radius: 18px; overflow: hidden; background: var(--color-bg); }
.screen img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; }
.screen img.center { object-position: center; }
.placeholder {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 8px;
  background: var(--color-bg); box-shadow: inset 0 0 0 1px var(--color-neutral-800);
  font-size: 12px; color: var(--color-neutral-600);
}
@media (max-width: 480px) {
  .phones { gap: 10px; }
  .phone:nth-child(2) { margin-top: 14px; }
  .phone:nth-child(3) { margin-top: 28px; }
}

.case-text { max-width: 520px; }
.kicker { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--color-accent-400); margin-bottom: 14px; }
.case-text h3 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.1; margin-bottom: 18px; letter-spacing: -.015em; }
.product { font-size: 17px; line-height: 1.65; color: var(--color-neutral-300); margin-bottom: 28px; text-wrap: pretty; }
.details { display: grid; gap: 18px; }
.label { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--color-neutral-400); margin-bottom: 6px; }
.details p { font-size: 15px; line-height: 1.6; color: var(--color-neutral-200); }
.tags { display: flex; gap: 8px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.tag {
  display: inline-flex; align-items: center; padding: 5.6px 8.4px;
  border-radius: var(--radius-sm); font-size: 12px; letter-spacing: .02em;
  background: var(--color-neutral-900); color: var(--color-neutral-200);
  border: 1px solid var(--color-neutral-800);
}

.help { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; margin-bottom: 140px; }
.help h2 { font-size: 22px; line-height: 1.2; color: var(--color-text); margin-bottom: 14px; }
.help p { font-size: 15px; line-height: 1.7; color: var(--color-neutral-200); text-wrap: pretty; }

.contact { max-width: 720px; }
.contact h2 { font-size: clamp(30px, 4vw, 48px); line-height: 1.1; margin-bottom: 24px; letter-spacing: -.02em; }
.contact p { font-size: 17px; line-height: 1.65; color: var(--color-neutral-300); margin-bottom: 32px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8.4px 16.8px; border-radius: var(--radius-md);
  font-family: var(--font-heading); font-weight: 500; font-size: 14px; line-height: 1.2;
  background: transparent; border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { border-color: var(--color-accent); color: var(--color-accent-300); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); color: var(--color-accent-300); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent-400) 22%, transparent); border-color: var(--color-accent-400); }
.btn-secondary { border-color: var(--color-neutral-800); color: var(--color-neutral-200); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); color: var(--color-neutral-200); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }