:root {
  --bg: #f3efe7;
  --bg-accent: #e6ecef;
  --bg-gradient-start: #f8f5ef;
  --bg-gradient-mid: #f1ece4;
  --bg-gradient-end: #ebe4d8;
  --bg-radial-warm: rgba(239, 126, 57, 0.15);
  --bg-radial-cool: rgba(15, 107, 120, 0.18);
  --surface: rgba(255, 252, 247, 0.82);
  --surface-strong: #fffaf2;
  --text: #16232a;
  --muted: #5b6a6c;
  --line: rgba(22, 35, 42, 0.1);
  --primary: #0f6b78;
  --primary-strong: #0a3940;
  --secondary: #ef7e39;
  --secondary-soft: #f7d1bb;
  --success: #2d8f68;
  --shadow: 0 24px 60px rgba(22, 35, 42, 0.12);
  --nav-surface: rgba(255, 250, 242, 0.8);
  --control-surface: rgba(255, 255, 255, 0.76);
  --control-border: rgba(22, 35, 42, 0.12);
  --hero-card-bg:
    linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(252, 243, 229, 0.84)),
    linear-gradient(135deg, rgba(15, 107, 120, 0.12), transparent 50%);
  --hero-side-bg: linear-gradient(180deg, rgba(255, 246, 236, 0.88), rgba(255, 255, 255, 0.74));
  --hero-accent-bg: linear-gradient(135deg, #d9e7e8, #8cb6b9);
  --hero-side-accent: linear-gradient(135deg, rgba(15, 107, 120, 0.16), rgba(239, 126, 57, 0.12));
  --pricing-bg:
    linear-gradient(180deg, rgba(15, 107, 120, 0.92), rgba(10, 57, 64, 0.96)),
    var(--primary-strong);
  --form-field-bg: rgba(255, 255, 255, 0.75);
  --focus-outline: rgba(15, 107, 120, 0.18);
  --focus-border: rgba(15, 107, 120, 0.4);
  --button-primary-bg: linear-gradient(135deg, var(--primary), #168392);
  --button-primary-text: #ffffff;
  --button-secondary-bg: var(--control-surface);
  --button-secondary-text: var(--primary-strong);
  --button-nav-bg: var(--primary-strong);
  --button-nav-text: #ffffff;
  --pill-bg: rgba(15, 107, 120, 0.1);
  --pill-text: var(--primary);
  --active-card-bg: linear-gradient(180deg, rgba(15, 107, 120, 0.1), var(--surface-strong));
  --active-card-border: rgba(15, 107, 120, 0.3);
  --usage-box-bg: rgba(15, 107, 120, 0.08);
  --usage-box-border: rgba(15, 107, 120, 0.12);
  --signal-ring: rgba(45, 143, 104, 0.12);
  --button-shadow: 0 18px 34px rgba(15, 107, 120, 0.22);
  --offer-sidebar-bg: rgba(255, 249, 240, 0.7);
  --offer-item-bg: rgba(255, 255, 255, 0.72);
  --offer-item-title: var(--text);
  --offer-item-meta-text: var(--muted);
  --advantage-panel-bg:
    linear-gradient(180deg, rgba(255, 250, 242, 0.9), rgba(244, 239, 231, 0.85)),
    var(--surface);
  --tab-active-bg: linear-gradient(135deg, var(--primary), #168392);
  --tab-active-text: #ffffff;
  --tab-active-shadow: 0 16px 28px rgba(15, 107, 120, 0.2);
  --gallery-dot-color: rgba(10, 57, 64, 0.92);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --max-width: 80vw;
  --offer-image-width: 420px;
  --offer-meta-gap: 12px;
  --offer-meta-card-height: 148px;
  --offer-image-height: calc(var(--offer-meta-card-height) * 2 + var(--offer-meta-gap));
}

body[data-theme="dark"] {
  --bg: #0d171c;
  --bg-accent: #102329;
  --bg-gradient-start: #101a1f;
  --bg-gradient-mid: #0c1418;
  --bg-gradient-end: #091114;
  --bg-radial-warm: rgba(239, 126, 57, 0.08);
  --bg-radial-cool: rgba(65, 163, 178, 0.12);
  --surface: rgba(16, 28, 34, 0.84);
  --surface-strong: #132029;
  --text: #eef5f7;
  --muted: #adc0c7;
  --line: rgba(238, 245, 247, 0.12);
  --primary: #35a9bd;
  --primary-strong: #9fe7f1;
  --secondary: #68d6e8;
  --secondary-soft: rgba(255, 179, 111, 0.18);
  --success: #35a9bd;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
  --nav-surface: rgba(11, 22, 28, 0.88);
  --control-surface: rgba(19, 32, 41, 0.9);
  --control-border: rgba(73, 182, 198, 0.34);
  --hero-card-bg:
    linear-gradient(160deg, rgba(19, 32, 41, 0.96), rgba(15, 26, 33, 0.9)),
    linear-gradient(135deg, rgba(53, 169, 189, 0.16), transparent 50%);
  --hero-side-bg: linear-gradient(180deg, rgba(19, 32, 41, 0.92), rgba(15, 26, 33, 0.82));
  --hero-accent-bg: linear-gradient(135deg, rgba(53, 169, 189, 0.34), rgba(20, 84, 96, 0.24));
  --hero-side-accent: linear-gradient(135deg, rgba(53, 169, 189, 0.34), rgba(20, 84, 96, 0.22));
  --pricing-bg:
    linear-gradient(180deg, rgba(18, 73, 84, 0.98), rgba(7, 23, 28, 0.98)),
    #0f1e24;
  --form-field-bg: rgba(11, 22, 28, 0.78);
  --focus-outline: rgba(53, 169, 189, 0.24);
  --focus-border: rgba(53, 169, 189, 0.56);
  --button-primary-bg: linear-gradient(135deg, #1b7b89, #35a9bd);
  --button-primary-text: #ffffff;
  --button-secondary-bg: rgba(14, 34, 40, 0.96);
  --button-secondary-text: #9fe7f1;
  --button-nav-bg: #35a9bd;
  --button-nav-text: #0b171c;
  --pill-bg: rgba(53, 169, 189, 0.16);
  --pill-text: #9fe7f1;
  --active-card-bg: linear-gradient(180deg, rgba(53, 169, 189, 0.18), rgba(16, 28, 34, 0.98));
  --active-card-border: rgba(53, 169, 189, 0.44);
  --usage-box-bg: rgba(53, 169, 189, 0.14);
  --usage-box-border: rgba(53, 169, 189, 0.26);
  --signal-ring: rgba(53, 169, 189, 0.22);
  --button-shadow: 0 18px 34px rgba(53, 169, 189, 0.24);
  --offer-sidebar-bg: rgba(14, 34, 40, 0.94);
  --offer-item-bg: rgba(22, 56, 64, 0.88);
  --offer-item-title: #d8f8fc;
  --offer-item-meta-text: #bfe7ee;
  --advantage-panel-bg:
    linear-gradient(180deg, rgba(19, 53, 61, 0.96), rgba(13, 31, 36, 0.9)),
    var(--surface);
  --tab-active-bg: linear-gradient(135deg, #165a66, #35a9bd);
  --tab-active-text: #ffffff;
  --tab-active-shadow: 0 16px 28px rgba(53, 169, 189, 0.24);
  --gallery-dot-color: #d8f8fc;
}

body[data-theme="mono"] {
  --bg: #f3f3f3;
  --bg-accent: #e7e7e7;
  --bg-gradient-start: #fafafa;
  --bg-gradient-mid: #f0f0f0;
  --bg-gradient-end: #e4e4e4;
  --bg-radial-warm: rgba(0, 0, 0, 0.06);
  --bg-radial-cool: rgba(0, 0, 0, 0.05);
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #111111;
  --muted: #505050;
  --line: rgba(17, 17, 17, 0.12);
  --primary: #222222;
  --primary-strong: #000000;
  --secondary: #444444;
  --secondary-soft: rgba(0, 0, 0, 0.08);
  --success: #2f2f2f;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
  --nav-surface: rgba(255, 255, 255, 0.86);
  --control-surface: rgba(255, 255, 255, 0.9);
  --control-border: rgba(50, 50, 50, 0.22);
  --hero-card-bg:
    linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(239, 239, 239, 0.92)),
    linear-gradient(135deg, rgba(0, 0, 0, 0.05), transparent 50%);
  --hero-side-bg: linear-gradient(180deg, rgba(250, 250, 250, 0.95), rgba(240, 240, 240, 0.9));
  --hero-accent-bg: linear-gradient(135deg, rgba(0, 0, 0, 0.12), rgba(120, 120, 120, 0.2));
  --hero-side-accent: linear-gradient(135deg, rgba(0, 0, 0, 0.1), rgba(120, 120, 120, 0.12));
  --pricing-bg:
    linear-gradient(180deg, rgba(42, 42, 42, 0.94), rgba(10, 10, 10, 0.96)),
    #111111;
  --form-field-bg: rgba(255, 255, 255, 0.9);
  --focus-outline: rgba(0, 0, 0, 0.14);
  --focus-border: rgba(0, 0, 0, 0.35);
  --button-primary-bg: linear-gradient(135deg, #181818, #5e5e5e);
  --button-primary-text: #ffffff;
  --button-secondary-bg: #f2f2f2;
  --button-secondary-text: #222222;
  --button-nav-bg: #111111;
  --button-nav-text: #ffffff;
  --pill-bg: rgba(45, 45, 45, 0.1);
  --pill-text: #242424;
  --active-card-bg: linear-gradient(180deg, rgba(120, 120, 120, 0.16), #ffffff);
  --active-card-border: rgba(90, 90, 90, 0.32);
  --usage-box-bg: rgba(0, 0, 0, 0.05);
  --usage-box-border: rgba(80, 80, 80, 0.18);
  --signal-ring: rgba(70, 70, 70, 0.12);
  --button-shadow: 0 18px 34px rgba(0, 0, 0, 0.12);
  --offer-sidebar-bg: #e7e7e7;
  --offer-item-bg: #efefef;
  --offer-item-title: #1f1f1f;
  --offer-item-meta-text: #3d3d3d;
  --advantage-panel-bg:
    linear-gradient(180deg, rgba(245, 245, 245, 0.96), rgba(231, 231, 231, 0.94)),
    var(--surface);
  --tab-active-bg: #2d2d2d;
  --tab-active-text: #ffffff;
  --tab-active-shadow: none;
  --gallery-dot-color: #1f1f1f;
}

body[data-theme="contrast"] {
  --bg: #000000;
  --bg-accent: #000000;
  --bg-gradient-start: #000000;
  --bg-gradient-mid: #000000;
  --bg-gradient-end: #000000;
  --bg-radial-warm: rgba(255, 255, 0, 0.08);
  --bg-radial-cool: rgba(255, 255, 255, 0.06);
  --surface: #000000;
  --surface-strong: #000000;
  --text: #ffff00;
  --muted: #ffff00;
  --line: rgba(255, 255, 0, 0.88);
  --primary: #ffff00;
  --primary-strong: #ffff00;
  --secondary: #ffff00;
  --secondary-soft: rgba(255, 255, 0, 0.2);
  --success: #ffff00;
  --shadow: none;
  --nav-surface: #000000;
  --control-surface: #000000;
  --control-border: #ffff00;
  --hero-card-bg: #000000;
  --hero-side-bg: #000000;
  --hero-accent-bg: #ffff00;
  --hero-side-accent: #ffff00;
  --pricing-bg: #000000;
  --form-field-bg: #000000;
  --focus-outline: rgba(255, 255, 0, 0.4);
  --focus-border: #ffff00;
  --button-primary-bg: #ffff00;
  --button-primary-text: #000000;
  --button-secondary-bg: #000000;
  --button-secondary-text: #ffff00;
  --button-nav-bg: #ffff00;
  --button-nav-text: #000000;
  --pill-bg: #ffff00;
  --pill-text: #000000;
  --active-card-bg: #000000;
  --active-card-border: #ffff00;
  --usage-box-bg: #000000;
  --usage-box-border: #ffff00;
  --signal-ring: rgba(255, 255, 0, 0.24);
  --button-shadow: none;
  --offer-sidebar-bg: #1f1f1f;
  --offer-item-bg: #2b2b2b;
  --offer-item-title: #ffff00;
  --offer-item-meta-text: #ffff00;
  --advantage-panel-bg: #1f1f1f;
  --tab-active-bg: #ffff00;
  --tab-active-text: #000000;
  --tab-active-shadow: none;
  --gallery-dot-color: #ffff00;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--bg-radial-warm), transparent 32%),
    radial-gradient(circle at 80% 18%, var(--bg-radial-cool), transparent 28%),
    linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 52%, var(--bg-gradient-end) 100%);
}

body[data-layout-width="compact"] {
  --max-width: 1180px;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding-bottom: 48px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 20px 0 24px;
  padding: 14px 18px;
  background: var(--nav-surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(22, 35, 42, 0.08);
  transition: transform 0.28s ease, opacity 0.28s ease;
  will-change: transform;
}

.topbar.nav-hidden {
  transform: translateY(calc(-100% - 28px));
  opacity: 0;
  pointer-events: none;
}

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

.brand-logo {
  width: 48px;
  height: 48px;
  padding: 4px;
  border-radius: 14px;
  background: #e6e6e6;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(15, 107, 120, 0.16);
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-copy strong,
.hero h1,
.section-heading h2,
.rental h2,
.advantage-panel h2,
.contact h2,
.device-card h2,
.service-card h3,
.timeline h3,
.advantage-grid h3,
.pricing-card h3,
.offer-detail h3,
.offer-sidebar-head h3 {
  font-family: "Sora", sans-serif;
}

.brand-copy small {
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  transition: color 0.25s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--primary);
}

.topbar.nav-collapsed {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  border-radius: 28px;
}

.topbar.nav-collapsed .brand {
  min-width: 0;
  align-items: center;
  padding-right: 8px;
}

.topbar.nav-collapsed .brand-copy {
  min-width: 0;
}

.topbar.nav-collapsed .brand-copy strong,
.topbar.nav-collapsed .brand-copy small {
  overflow-wrap: anywhere;
}

.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.theme-switcher-label {
  font-size: 0.92rem;
  font-weight: 700;
}

.theme-select {
  min-width: 132px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--control-border);
  background: var(--control-surface);
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 6px;
  color: var(--text);
  cursor: pointer;
}

.nav-toggle-icon {
  position: relative;
  display: inline-flex;
  width: 28px;
  height: 22px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bar {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 2.5px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center center;
  transition:
    transform 0.3s ease,
    opacity 0.2s ease,
    background-color 0.2s ease;
}

.nav-toggle-bar-top {
  top: 3px;
  transform: translateX(-50%);
}

.nav-toggle-bar-middle {
  top: 50%;
  transform: translate(-50%, -50%);
}

.nav-toggle-bar-bottom {
  bottom: 3px;
  transform: translateX(-50%);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar-top {
  transform: translate(-50%, 7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar-middle {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar-bottom {
  transform: translate(-50%, -7px) rotate(-45deg);
}

.topbar.nav-collapsed .nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-left: 0;
  border: 1px solid var(--control-border);
  border-radius: 12px;
  background: var(--control-surface);
  align-self: start;
}

.topbar.nav-collapsed .nav {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  display: none;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding: 16px;
  background: rgba(255, 250, 242, 0.96);
  background: var(--nav-surface);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.topbar.nav-collapsed .theme-switcher {
  display: grid;
  gap: 6px;
}

.topbar.nav-collapsed .theme-select {
  width: 100%;
}

.topbar.nav-collapsed.nav-open .nav {
  display: flex;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease,
    color 0.25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--button-primary-text);
  background: var(--button-primary-bg);
  box-shadow: var(--button-shadow);
}

.button-secondary {
  color: var(--button-secondary-text);
  background: var(--button-secondary-bg);
  border: 1px solid var(--control-border);
}

.button-nav {
  min-height: 42px;
  padding: 0 18px;
  color: var(--button-nav-text);
  background: var(--button-nav-bg);
}

.button-wide {
  width: 100%;
}

.hero,
.rental,
.contact {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero {
  min-height: calc(100vh - 160px);
  padding: 36px 0 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2.6rem, 6vw, 5.1rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.hero-lead,
.section-heading p,
.rental-copy > p,
.contact-copy > p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-metrics li,
.service-card,
.pricing-card,
.timeline article,
.advantage-grid article,
.contact-form,
.advantage-panel,
.clients-strip,
.device-card,
.signal-panel,
.offer-browser-shell,
.offer-tabs {
  background: var(--surface);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow);
}

.hero-metrics li {
  padding: 18px;
  border-radius: var(--radius-lg);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.35rem;
  font-family: "Sora", sans-serif;
}

.hero-metrics span {
  color: var(--muted);
  line-height: 1.6;
}

.hero-visual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-areas:
    "main main"
    "side signal";
  gap: 18px;
  align-items: stretch;
}

.device-card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 28px;
  min-height: 100%;
}

.device-card-main {
  grid-area: main;
  background: var(--hero-card-bg);
}

.device-card-main::after {
  content: "";
  position: absolute;
  right: 26px;
  top: 26px;
  width: 96px;
  height: 96px;
  background:
    linear-gradient(180deg, rgba(22, 35, 42, 0.05), rgba(22, 35, 42, 0)),
    var(--hero-accent-bg);
  border-radius: 24px;
  transform: none;
  opacity: 0.4;
  box-shadow: none;
  z-index: 0;
}

.device-badge,
.pricing-label,
.offer-pill {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--pill-bg);
  color: var(--pill-text);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.device-card-main h2 {
  position: relative;
  z-index: 1;
  max-width: 14ch;
  margin: 18px 0 12px;
  font-size: clamp(1.9rem, 3vw, 2.7rem);
  line-height: 1.12;
}

.device-card-main p,
.device-card-side p,
.signal-panel p,
.service-card p,
.pricing-text,
.timeline p,
.advantage-grid p,
.contact-points span,
.form-note,
.offer-description,
.offer-sidebar-kicker,
.offer-subtitle {
  color: var(--muted);
  line-height: 1.7;
}

.device-card-main .device-badge,
.device-card-main p {
  position: relative;
  z-index: 1;
}

.device-card-main,
.device-card-side,
.signal-panel {
  color: var(--text);
}

.device-card-main p {
  max-width: 42ch;
  margin: 0;
  color: rgba(22, 35, 42, 0.78);
}

body[data-theme="dark"] .device-card-main p,
body[data-theme="mono"] .device-card-main p,
body[data-theme="contrast"] .device-card-main p {
  color: var(--muted);
}

.device-card-side {
  grid-area: side;
  background: var(--hero-side-bg);
}

.device-card-side strong {
  display: block;
  max-width: 12ch;
  line-height: 1.2;
  color: var(--text);
  font-size: 1.3rem;
  font-family: "Sora", sans-serif;
}

.device-card-side::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px auto;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--hero-side-accent);
  opacity: 0.35;
}

.signal-panel {
  grid-area: signal;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  border-radius: 22px;
  min-height: 0;
}

.signal-panel strong,
.device-card-side p {
  color: var(--text);
}

.signal-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 10px var(--signal-ring);
}

.clients-strip {
  display: flex;
  justify-content: center;
  padding: 18px 24px;
  border-radius: 22px;
}

.clients-strip p {
  margin: 0;
  color: var(--muted);
  text-align: center;
}

.section {
  padding: 110px 0 0;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 28px;
}

.section-heading h2,
.rental h2,
.advantage-panel h2,
.contact h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.card-grid,
.advantage-grid,
.timeline {
  display: grid;
  gap: 22px;
}

.pricing-card,
.contact-form,
.advantage-panel,
.offer-browser-shell {
  border-radius: var(--radius-xl);
}

.offer-browser {
  display: grid;
  gap: 18px;
}

.offer-tabs {
  display: inline-flex;
  gap: 10px;
  padding: 10px;
  border-radius: 999px;
  width: fit-content;
}

.offer-tab {
  min-height: 46px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.offer-tab.is-active {
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
  box-shadow: var(--tab-active-shadow);
}

.offer-browser-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  overflow: hidden;
}

.offer-sidebar {
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: var(--offer-sidebar-bg);
}

.offer-sidebar-head {
  margin-bottom: 18px;
}

.offer-sidebar-head h3 {
  margin: 8px 0 0;
  font-size: 1.4rem;
}

.offer-filters {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.offer-filters[hidden],
.offer-filter-group[hidden] {
  display: none !important;
}

.offer-filter-group {
  display: grid;
  gap: 12px;
}

.offer-filter {
  display: grid;
  gap: 8px;
}

.offer-filter span {
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.offer-filter select {
  width: 100%;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid var(--control-border);
  background: var(--control-surface);
  color: var(--text);
}

.offer-sidebar-kicker {
  margin: 0;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
}

.offer-list {
  display: grid;
  gap: 10px;
}

.offer-list.is-scrollable {
  max-height: 632px;
  overflow-y: auto;
  padding-right: 6px;
}

.offer-list.is-scrollable::-webkit-scrollbar {
  width: 10px;
}

.offer-list.is-scrollable::-webkit-scrollbar-track {
  background: rgba(22, 35, 42, 0.06);
  border-radius: 999px;
}

.offer-list.is-scrollable::-webkit-scrollbar-thumb {
  background: rgba(15, 107, 120, 0.34);
  border-radius: 999px;
}

.offer-item {
  width: 100%;
  padding: 16px;
  border: 1px solid transparent;
  border-radius: 18px;
  background: var(--offer-item-bg);
  text-align: left;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.offer-item:hover,
.offer-item:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(15, 107, 120, 0.22);
}

.offer-item.is-active {
  background: var(--active-card-bg);
  border-color: var(--active-card-border);
}

.offer-item-empty {
  cursor: default;
}

.offer-item-empty:hover,
.offer-item-empty:focus-visible {
  transform: none;
  border-color: transparent;
}

.offer-item-top {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  align-items: center;
  margin-bottom: 6px;
}

.offer-item-thumb {
  width: 64px;
  height: 64px;
  flex: 0 0 64px;
  border-radius: 16px;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(22, 35, 42, 0.08);
}

.offer-item-copy {
  min-width: 0;
}

.offer-item-top strong {
  font-size: 1rem;
  color: var(--offer-item-title);
}

.offer-item-meta {
  margin: 0;
  color: var(--offer-item-meta-text);
  font-size: 0.94rem;
  line-height: 1.55;
}

.offer-detail {
  padding: 30px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 240, 231, 0.85)),
    var(--surface);
}

body[data-theme="dark"] .offer-detail,
body[data-theme="mono"] .offer-detail,
body[data-theme="contrast"] .offer-detail {
  background: var(--surface);
}

.offer-detail-top {
  display: flex;
  gap: 16px;
  align-items: center;
}

.offer-detail-media {
  position: relative;
  display: grid;
  grid-template-rows: var(--offer-image-height) 20px;
  align-content: start;
  gap: 14px;
  width: min(100%, var(--offer-image-width));
  min-height: calc(var(--offer-image-height) + 34px);
  justify-items: start;
  margin: 18px 0 6px;
}

.offer-gallery-viewport {
  width: min(100%, var(--offer-image-width));
  height: var(--offer-image-height);
  border-radius: 24px;
  outline: none;
  touch-action: pan-y;
}

.offer-detail-image {
  display: block;
  width: 100%;
  height: var(--offer-image-height);
  object-fit: contain;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(22, 35, 42, 0.08);
  box-shadow: 0 18px 32px rgba(22, 35, 42, 0.12);
  padding: 18px;
}

.offer-detail-image.is-fit-contain-wide {
  object-fit: contain;
  object-position: center center;
}

.offer-gallery-nav {
  position: absolute;
  top: calc(50% - 18px);
  z-index: 2;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(22, 35, 42, 0.12);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  box-shadow: 0 12px 24px rgba(22, 35, 42, 0.14);
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.offer-gallery-nav[hidden],
.offer-gallery-dots[hidden] {
  display: none !important;
}

.offer-gallery-nav:hover,
.offer-gallery-nav:focus-visible {
  transform: translateY(-1px);
  background: var(--bg);
}

.offer-gallery-nav span {
  font-size: 1.9rem;
  line-height: 1;
}

.offer-gallery-nav-prev {
  left: 14px;
}

.offer-gallery-nav-next {
  right: 14px;
}

.offer-gallery-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  min-height: 20px;
}

.offer-gallery-dot {
  width: 12px;
  height: 12px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 999px;
  background: var(--gallery-dot-color);
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.offer-gallery-dot.is-active {
  background: transparent;
  border-color: var(--gallery-dot-color);
  transform: scale(1.15);
}

.offer-gallery-dot:focus-visible {
  outline: 2px solid var(--gallery-dot-color);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .offer-gallery-nav {
    width: 40px;
    height: 40px;
  }

  .offer-gallery-nav-prev {
    left: 10px;
  }

  .offer-gallery-nav-next {
    left: auto;
    right: 10px;
  }
}

.offer-detail h3 {
  margin: 18px 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

.offer-subtitle {
  margin: 0 0 16px;
  font-weight: 700;
}

.offer-description {
  margin: 0 0 20px;
}

.offer-usage-box {
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--usage-box-bg);
  border: 1px solid var(--usage-box-border);
}

body[data-theme="contrast"] .offer-usage-box,
body[data-theme="contrast"] .offer-meta-item,
body[data-theme="contrast"] .offer-features li,
body[data-theme="contrast"] .offer-item,
body[data-theme="contrast"] .contact-form input,
body[data-theme="contrast"] .contact-form select,
body[data-theme="contrast"] .contact-form textarea {
  border-color: #ffff00;
}

body[data-theme="contrast"] .pricing-card {
  border: 2px solid #ffff00;
  color: #ffff00;
}

body[data-theme="contrast"] .pricing-card .pricing-label {
  background: #ffff00;
  color: #000000;
}

body[data-theme="contrast"] .pricing-card h3,
body[data-theme="contrast"] .pricing-card p,
body[data-theme="contrast"] .pricing-card ul {
  color: #ffff00;
}

.offer-usage-box strong {
  display: block;
  margin-bottom: 8px;
}

.offer-usage-box p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.offer-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--offer-meta-gap);
  margin: 22px 0;
}

.offer-meta-item {
  min-height: var(--offer-meta-card-height);
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--offer-item-bg);
  border: 1px solid rgba(22, 35, 42, 0.08);
}

.offer-meta-item span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.offer-meta-item strong {
  font-size: 1rem;
}

.offer-features {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.offer-features li {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--offer-item-bg);
  border: 1px solid rgba(22, 35, 42, 0.08);
}

@media (min-width: 1180px) {
  .offer-detail {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "top top"
      "title title"
      "subtitle subtitle"
      "description description"
      "usage usage"
      "meta media"
      "features features";
    column-gap: 28px;
    row-gap: 22px;
    align-items: start;
  }

  .offer-detail-top {
    grid-area: top;
  }

  .offer-detail > [data-offer-title] {
    grid-area: title;
    margin-bottom: 8px;
  }

  .offer-detail > [data-offer-subtitle] {
    grid-area: subtitle;
  }

  .offer-detail > [data-offer-description] {
    grid-area: description;
  }

  .offer-usage-box {
    grid-area: usage;
  }

  .offer-detail-media {
    grid-area: media;
    width: 100%;
    margin: 12px 0;
    justify-self: stretch;
    align-self: stretch;
    height: 100%;
  }

  .offer-gallery-viewport {
    width: 100%;
    height: 100%;
  }

  .offer-meta {
    grid-area: meta;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: 1fr;
    width: 100%;
    margin: 12px 0;
    align-self: stretch;
  }

  .offer-features {
    grid-area: features;
    width: 100%;
    margin-top: 12px;
  }

  .offer-detail-image {
    height: 100%;
  }
}

.feature-list {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.feature-list div {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.feature-list strong,
.contact-points strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.pricing-card {
  padding: 30px;
  background: var(--pricing-bg);
  color: #fff;
}

.pricing-card .pricing-label,
.pricing-card ul,
.pricing-card p {
  color: rgba(255, 255, 255, 0.84);
}

.pricing-card h3 {
  margin: 18px 0 12px;
  font-size: 2rem;
}

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

.timeline article,
.advantage-grid article {
  padding: 28px;
  border-radius: var(--radius-xl);
}

.timeline span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(239, 126, 57, 0.12);
  color: var(--secondary);
  font-family: "Sora", sans-serif;
  font-weight: 800;
}

.timeline h3,
.advantage-grid h3 {
  margin: 22px 0 12px;
  font-size: 1.35rem;
}

.advantages {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 22px;
}

.advantage-panel {
  padding: 34px;
  background: var(--advantage-panel-bg);
}

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

.contact-points {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 30px;
}

.contact-form label {
  display: grid;
  gap: 10px;
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(22, 35, 42, 0.12);
  border-radius: 14px;
  background: var(--form-field-bg);
  color: var(--text);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--focus-outline);
  border-color: var(--focus-border);
}

.form-note {
  margin: 0;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 1080px) {
  .hero,
  .rental,
  .contact,
  .advantages,
  .offer-browser-shell {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 20px;
  }

  .hero-visual {
    grid-template-columns: 1fr;
    grid-template-areas:
      "main"
      "side"
      "signal";
  }

  .timeline,
  .advantage-grid,
  .offer-meta {
    grid-template-columns: 1fr 1fr;
  }

  .offer-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .topbar {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 14px;
    border-radius: 28px;
  }

  .brand {
    min-width: 0;
    align-items: center;
    padding-right: 8px;
  }

  .brand-copy {
    min-width: 0;
  }

  .brand-copy strong,
  .brand-copy small {
    overflow-wrap: anywhere;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-left: 0;
    border: 1px solid var(--control-border);
    border-radius: 12px;
    background: var(--control-surface);
    align-self: start;
  }

  .nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 16px;
    background: rgba(255, 250, 242, 0.96);
    background: var(--nav-surface);
    border-radius: 24px;
    box-shadow: var(--shadow);
  }

  .theme-switcher {
    display: grid;
    gap: 6px;
  }

  .theme-select {
    width: 100%;
  }

  .topbar.nav-open .nav {
    display: flex;
  }

  body[data-theme="light"] .topbar.nav-open .nav,
  body[data-theme="dark"] .topbar.nav-open .nav,
  body[data-theme="mono"] .topbar.nav-open .nav {
    backdrop-filter: none;
  }

  body[data-theme="light"] .topbar.nav-open .nav {
    background: #fffaf3;
    border: 1px solid rgba(22, 35, 42, 0.1);
  }

  body[data-theme="dark"] .topbar.nav-open .nav {
    background: #101a22;
    border: 1px solid rgba(203, 213, 225, 0.16);
  }

  body[data-theme="mono"] .topbar.nav-open .nav {
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.2);
  }

  body[data-theme="light"] .topbar.nav-open .nav a,
  body[data-theme="light"] .topbar.nav-open .nav .theme-switcher,
  body[data-theme="mono"] .topbar.nav-open .nav a,
  body[data-theme="mono"] .topbar.nav-open .nav .theme-switcher {
    color: var(--text);
    opacity: 1;
  }

  body[data-theme="dark"] .topbar.nav-open .nav a,
  body[data-theme="dark"] .topbar.nav-open .nav .theme-switcher {
    color: #f8fafc;
    opacity: 1;
  }

  body[data-theme="light"] .topbar.nav-open .nav .theme-select,
  body[data-theme="light"] .topbar.nav-open .nav .button-nav {
    background: #ffffff;
    color: #16232a;
    border-color: rgba(22, 35, 42, 0.12);
  }

  body[data-theme="dark"] .topbar.nav-open .nav .theme-select,
  body[data-theme="dark"] .topbar.nav-open .nav .button-nav {
    background: #16232a;
    color: #f8fafc;
    border-color: rgba(203, 213, 225, 0.18);
  }

  body[data-theme="mono"] .topbar.nav-open .nav .theme-select,
  body[data-theme="mono"] .topbar.nav-open .nav .button-nav {
    background: #ffffff;
    color: #000000;
    border-color: rgba(0, 0, 0, 0.35);
  }

  .offer-detail-media,
  .offer-gallery-viewport {
    width: 100%;
    max-width: none;
  }

  .offer-detail-image,
  .offer-detail-image.is-fit-contain-wide {
    width: 100%;
    height: var(--offer-image-height);
    object-fit: contain;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 10vw, 4rem);
  }

  .hero-metrics,
  .timeline,
  .advantage-grid,
  .offer-meta {
    grid-template-columns: 1fr;
  }

  .offer-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-radius: 24px;
  }

  .offer-tab {
    min-height: 52px;
  }

  .hero-visual {
    grid-template-columns: 1fr;
    grid-template-areas:
      "main"
      "side"
      "signal";
  }

  .device-card-main::after {
    right: 18px;
    top: 18px;
    width: 72px;
    height: 72px;
  }

  .device-card-side {
    min-height: auto;
  }

  .signal-panel {
    padding: 18px;
  }

  .section {
    padding-top: 84px;
  }
}