:root {
  --bg: #0d111f;
  --surface: #161c31;
  --surface-soft: #1e2640;
  --surface-card: #12182b;
  --text: #f7f9ff;
  --text-muted: #b9c2e1;
  --border: #2b3456;
  --primary: #ffd84d;
  --primary-hover: #f3cb34;
  --link: #8edcff;
  --success: #6bf6be;
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.8rem;
}

body {
  margin: 0;
  font-family:
    "Inter",
    "Segoe UI",
    Roboto,
    Arial,
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% -20%, rgba(88, 126, 255, 0.28), transparent 45%),
    radial-gradient(circle at 20% 0%, rgba(58, 229, 194, 0.18), transparent 40%), var(--bg);
  line-height: 1.5;
}

img {
  max-width: 100%;
}

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

.container {
  width: min(1160px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.section {
  padding: 5.5rem 0;
  scroll-margin-top: 5.8rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--link);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.25;
}

.lead {
  margin-top: 1.1rem;
  color: var(--text-muted);
  max-width: 58ch;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.section-heading {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 2.1rem;
}

.section-copy {
  color: var(--text-muted);
  max-width: 76ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.62;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  color: #161203;
  background: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: #4f5e8f;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(12px);
  background: rgba(10, 14, 27, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-row {
  min-height: 4.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand-mark {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #161203;
  background: var(--primary);
  font-weight: 800;
  font-size: 0.92rem;
}

.main-nav {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.main-nav a:hover {
  color: var(--text);
}

.nav-cta {
  margin-left: 0.8rem;
}

.mobile-nav-cta {
  display: none;
}

.menu-toggle {
  display: none;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.22rem;
}

.menu-toggle span {
  width: 1.1rem;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.hero {
  padding-top: 4.75rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.hero-meta {
  margin-top: 1.5rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
}

.hero-meta li::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--success);
}

.hero-visual {
  position: relative;
  min-height: 620px;
  display: grid;
  place-items: center;
}

.phone {
  width: min(350px, 85%);
  border-radius: 42px;
  padding: 0.85rem;
  border: 1px solid #343d60;
  background: linear-gradient(160deg, #0a0f20 0%, #161f35 100%);
  box-shadow: var(--shadow);
}

.phone-notch {
  width: 42%;
  height: 1.3rem;
  margin-inline: auto;
  border-radius: 999px;
  background: #0a0f1d;
}

.phone-screen {
  margin-top: 0.65rem;
  border-radius: 30px;
  padding: 1rem;
  background: linear-gradient(180deg, #1a2440, #0d1326);
  min-height: 530px;
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.chat-bubble {
  max-width: 88%;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  background: #273456;
  color: #e9edff;
  font-size: 0.86rem;
}

.chat-bubble.is-channel {
  justify-self: end;
  background: #394f83;
}

.promo-card {
  border-radius: 14px;
  background: linear-gradient(130deg, rgba(255, 216, 77, 0.25), rgba(255, 216, 77, 0.08));
  border: 1px solid rgba(255, 216, 77, 0.45);
  padding: 0.8rem;
}

.promo-badge {
  color: #f5da77;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.promo-title {
  margin-top: 0.45rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.promo-url {
  margin-top: 0.45rem;
  color: #f7e8a6;
  font-size: 0.78rem;
}

.floating-metric {
  position: absolute;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(18, 24, 43, 0.9);
  box-shadow: var(--shadow);
  padding: 0.75rem 0.95rem;
  display: grid;
  gap: 0.1rem;
}

.floating-metric span {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.floating-metric strong {
  font-size: 1.04rem;
}

.metric-income {
  left: 0;
  top: 4rem;
}

.metric-fill {
  right: 0;
  bottom: 5rem;
}

.benefits-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benefit-card {
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem;
  background: var(--surface-card);
  border: 1px solid var(--border);
  display: grid;
  gap: 0.72rem;
}

.benefit-card .icon {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(255, 216, 77, 0.45), rgba(111, 221, 255, 0.15)),
    rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.benefit-card .icon svg {
  width: 1.22rem;
  height: 1.22rem;
  stroke: #fff2b3;
}

.benefit-card p {
  color: var(--text-muted);
}

.tabs {
  display: inline-flex;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem;
}

.tab,
.req-tab {
  border: 0;
  cursor: pointer;
  color: var(--text-muted);
  background: transparent;
  border-radius: 999px;
  padding: 0.82rem 1rem;
  min-height: 46px;
  font-weight: 600;
  font-size: 0.92rem;
}

.tab.is-active,
.req-tab.is-active {
  color: #161203;
  background: var(--primary);
}

.tab-panels,
.req-panels {
  margin-top: 1.25rem;
}

.tab-panel,
.req-panel {
  display: none;
}

.tab-panel.is-active,
.req-panel.is-active {
  display: block;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.model-feature {
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  border: 1px solid var(--border);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.55rem;
}

.model-feature p {
  color: var(--text-muted);
}

.link-arrow {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--link);
  font-weight: 600;
}

.link-arrow::after {
  content: "→";
}

.calculator-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.calculator-controls,
.calculator-result {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--surface-card);
  padding: 1.25rem;
}

.calculator-controls {
  display: grid;
  gap: 1rem;
}

.control {
  display: grid;
  gap: 0.6rem;
}

.control > span {
  font-weight: 550;
}

select,
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="email"] {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #374266;
  padding: 0.72rem 0.8rem;
  background: #10162a;
  color: var(--text);
  font-size: 1rem;
}

input[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: #ff8a8a;
}

input[type="range"] {
  width: 100%;
  accent-color: #ffd84d;
  min-height: 2rem;
}

.control-value {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.calculator-result {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.result-label {
  color: var(--text-muted);
}

.result-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 750;
  letter-spacing: -0.02em;
}

.result-note {
  color: var(--text-muted);
  font-size: 0.93rem;
}

.requirements-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.25rem;
  border-radius: 999px;
}

.req-list {
  list-style: none;
  margin: 0;
  padding: 1.2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--surface-card);
  display: grid;
  gap: 0.7rem;
}

.req-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--text-muted);
}

.req-list li::before {
  content: "";
  width: 0.62rem;
  height: 0.62rem;
  margin-top: 0.45rem;
  border-radius: 999px;
  background: var(--success);
  flex-shrink: 0;
}

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

.step-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-card);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.6rem;
}

.step-number {
  display: inline-flex;
  width: fit-content;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.78rem;
  background: rgba(255, 216, 77, 0.18);
  color: #f4d962;
}

.step-card p {
  color: var(--text-muted);
}

.center {
  margin-top: 1.25rem;
  text-align: center;
}

.faq-list {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--surface-card);
}

.faq-item + .faq-item {
  border-top: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  border: 0;
  color: var(--text);
  background: transparent;
  text-align: left;
  font-size: 1rem;
  font-weight: 620;
  min-height: 52px;
  padding: 1rem 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-question::after {
  content: "+";
  color: var(--text-muted);
  font-size: 1.35rem;
}

.faq-question[aria-expanded="true"]::after {
  content: "−";
}

.faq-answer {
  display: none;
  padding: 0 1.1rem 1rem;
  color: var(--text-muted);
}

.faq-answer.is-open {
  display: block;
}

.beta-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.beta-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface-card);
  padding: 1.1rem;
  display: grid;
  gap: 0.8rem;
}

.beta-card p {
  color: var(--text-muted);
}

.beta-form {
  display: grid;
  gap: 0.8rem;
}

.beta-form label {
  display: grid;
  gap: 0.45rem;
}

.beta-form span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.signup-card {
  border-radius: var(--radius-xl);
  padding: 1.4rem;
  border: 1px solid #5b4c13;
  background: linear-gradient(120deg, rgba(255, 216, 77, 0.2), rgba(255, 216, 77, 0.08));
  display: grid;
  gap: 0.95rem;
}

.signup-card p {
  color: #efe7c8;
  max-width: 72ch;
}

.signup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.1rem 0;
  color: var(--text-muted);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.footer-row a {
  color: var(--link);
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 40;
  background: #102418;
  border: 1px solid #2f8f57;
  color: #ceffe1;
  padding: 0.65rem 0.9rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
}

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

@media (max-width: 1100px) {
  .hero-grid,
  .calculator-card {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 520px;
  }

  .metric-income {
    left: 2rem;
    top: 2.5rem;
  }

  .metric-fill {
    right: 2rem;
    bottom: 2.5rem;
  }

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

@media (max-width: 920px) {
  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-cta {
    display: none;
  }

  .main-nav {
    position: absolute;
    left: 0.8rem;
    right: 0.8rem;
    top: calc(100% + 0.6rem);
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(10, 14, 27, 0.98);
    padding: 0.8rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

  .main-nav .mobile-nav-cta {
    width: 100%;
    margin-top: 0.2rem;
    display: inline-flex;
    color: #161203;
  }

  .main-nav .mobile-nav-cta:hover {
    color: #161203;
  }

  .main-nav.is-open {
    display: flex;
  }

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

@media (max-width: 680px) {
  .section {
    padding: 4.1rem 0;
  }

  .container {
    width: min(1160px, calc(100% - 1.25rem));
  }

  .hero {
    padding-top: 3.8rem;
  }

  .hero-visual {
    min-height: 460px;
  }

  .floating-metric {
    display: none;
  }

  .hero-meta {
    flex-direction: column;
    gap: 0.55rem;
  }

  .tabs,
  .requirements-switch {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-radius: 14px;
  }

  .tab,
  .req-tab {
    border-radius: 10px;
    text-align: center;
  }

  .benefits-grid,
  .panel-grid,
  .steps-grid,
  .beta-grid {
    grid-template-columns: 1fr;
  }

  .signup-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}