:root {
  --brand-orange: #F9862E;
  --brand-orange-600: #E4741C;
  --navy: #141526;
  --navy-800: #1C1E33;
  --ink: #141526;
  --muted: #6B7180;
  --surface: #FFFFFF;
  --surface-alt: #F6F7FB;
  --border: rgba(20, 21, 38, 0.10);
  --radius: 18px;
  --shadow-phone: 0 18px 50px rgba(20, 21, 38, 0.22);
  --header-h: 68px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--brand-orange); text-decoration: none; }
a:hover { color: var(--brand-orange-600); }

:focus-visible {
  outline: 3px solid rgba(249, 134, 46, 0.55);
  outline-offset: 3px;
}

.container {
  width: min(1100px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(20, 21, 38, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.brand:hover { color: #fff; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }

.nav {
  display: flex;
  align-items: center;
  gap: 8px 22px;
}
.nav a:not(.btn) {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav a:not(.btn):hover { color: #fff; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--brand-orange);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(249, 134, 46, 0.35);
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover {
  background: var(--brand-orange-600);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.28);
  box-shadow: none;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.section { padding: 88px 0; }
.section--alt { background: var(--surface-alt); }
.section--dark { background: var(--navy); color: #fff; }
.section--dark .muted,
.section--dark .lead { color: rgba(255, 255, 255, 0.72); }

.section__head { max-width: 680px; margin-bottom: 40px; }
.section__head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.lead { margin: 0; font-size: 1.1rem; color: var(--muted); }
.muted { color: var(--muted); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(249, 134, 46, 0.14);
  color: var(--brand-orange);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.section--dark .badge { background: rgba(249, 134, 46, 0.2); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 4px 18px rgba(20, 21, 38, 0.04);
}
.card h3 { margin: 0 0 8px; font-size: 1.1rem; letter-spacing: -0.02em; }
.card p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.card .arrow { display: block; margin: 12px 0; color: var(--brand-orange); font-weight: 700; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 56px;
}
.feature:last-child { margin-bottom: 0; }
.feature--flip { grid-template-columns: 0.95fr 1.05fr; }
.feature--flip .feature__media { order: -1; }
.feature__text h3 {
  margin: 12px 0 10px;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.feature__text p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.feature__media { display: flex; justify-content: center; }

.phone {
  width: min(280px, 78vw);
  margin: 0;
  aspect-ratio: 9 / 19.5;
  border-radius: 28px;
  overflow: hidden;
  background: #0b0c16;
  border: 3px solid rgba(20, 21, 38, 0.18);
  box-shadow: var(--shadow-phone);
  cursor: zoom-in;
  display: flex;
  align-items: center;
  justify-content: center;
}
.phone img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  display: block;
  aspect-ratio: 676 / 1246;
  border-radius: 24px;
}
.phone--sm { width: min(220px, 62vw); }

.phone-stack {
  position: relative;
  width: min(360px, 90vw);
  height: min(520px, 70vw);
  margin-inline: auto;
}
.phone-stack .phone {
  position: absolute;
  width: min(240px, 58vw);
}
.phone-stack .phone:first-child {
  left: 0; top: 24px; z-index: 1;
  transform: rotate(-6deg);
}
.phone-stack .phone:last-child {
  right: 0; top: 0; z-index: 2;
  transform: rotate(5deg);
}

.hero {
  padding: 72px 0 88px;
  background:
    radial-gradient(900px 420px at 85% 15%, rgba(249, 134, 46, 0.18), transparent 60%),
    radial-gradient(700px 380px at 10% 80%, rgba(249, 134, 46, 0.08), transparent 55%),
    var(--navy);
  color: #fff;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  margin: 16px 0 16px;
  font-size: clamp(2rem, 4.4vw, 3.05rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}
.hero .lead {
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 28px;
  max-width: 34em;
}
.hero__brand-mark { width: 56px; height: 56px; border-radius: 16px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(249, 134, 46, 0.45);
  background: rgba(249, 134, 46, 0.14);
  color: var(--brand-orange);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.accent { color: var(--brand-orange); }

.hero__chips {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.86rem;
  font-weight: 600;
}
.chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(249, 134, 46, 0.22);
}

.positioning {
  background: var(--navy-800);
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.positioning__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: baseline;
  justify-content: center;
  text-align: center;
  font-size: clamp(0.98rem, 2vw, 1.15rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.positioning__old { color: rgba(255, 255, 255, 0.48); }
.positioning__new { color: #fff; }
.positioning__arrow {
  color: var(--brand-orange);
  font-weight: 800;
  margin-right: 4px;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.adv-card {
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding: 20px 18px;
}
.adv-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.adv-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.adv-card__icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--brand-orange);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.showcase {
  background: var(--navy);
  color: #fff;
  padding: 64px 0;
}
.showcase__label {
  margin: 0 0 28px;
  text-align: center;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.92);
}
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
}
.showcase-tile {
  background: var(--navy-800);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 28px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.showcase-tile__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(249, 134, 46, 0.16);
  color: var(--brand-orange);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step { text-align: center; }
.step__num {
  display: inline-flex;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--brand-orange);
  color: #fff;
  font-weight: 800;
  margin-bottom: 14px;
}
.step h3 { margin: 16px 0 8px; font-size: 1.15rem; }
.step p { margin: 0; color: rgba(255, 255, 255, 0.7); font-size: 0.98rem; }
.step .phone { margin-inline: auto; }

.cta {
  text-align: center;
  padding: 88px 0;
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(249, 134, 46, 0.16), transparent 60%),
    var(--navy);
  color: #fff;
}
.cta h2 {
  margin: 0 0 12px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
}
.cta .lead { margin-bottom: 28px; }
.cta-link {
  display: inline-block;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}
.cta-link:hover { color: var(--brand-orange); }

.site-footer {
  background: #0e0f1b;
  color: rgba(255, 255, 255, 0.65);
  padding: 28px 0;
  font-size: 0.92rem;
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
}
.site-footer .brand { font-size: 1rem; }
.site-footer a { color: rgba(255, 255, 255, 0.75); }
.site-footer a:hover { color: var(--brand-orange); }

.help-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
  padding: 36px 0 80px;
}

.toc {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
}
.toc__title {
  margin: 0 0 12px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}
.toc nav { display: flex; flex-direction: column; gap: 4px; }
.toc a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
}
.toc a:hover {
  background: rgba(249, 134, 46, 0.1);
  color: var(--brand-orange-600);
}
.toc a.is-active {
  background: rgba(249, 134, 46, 0.14);
  color: var(--brand-orange-600);
  font-weight: 700;
}

.toc-mobile { display: none; margin-bottom: 24px; }
.toc-mobile select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font: inherit;
  background: var(--surface);
}

.help-section {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.help-section > h2 {
  margin: 0 0 24px;
  font-size: clamp(1.45rem, 2.6vw, 1.9rem);
  letter-spacing: -0.03em;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(249, 134, 46, 0.35);
}

.help-step {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.help-step:last-child { border-bottom: none; }
.help-step__meta { display: flex; gap: 14px; align-items: flex-start; }
.help-step__num {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
}
.help-step h3 { margin: 0 0 6px; font-size: 1.05rem; letter-spacing: -0.02em; }
.help-step p { margin: 0; color: var(--muted); }

.help-hero {
  background: var(--navy);
  color: #fff;
  padding: 48px 0;
}
.help-hero h1 {
  margin: 12px 0 10px;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  letter-spacing: -0.03em;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(10, 11, 20, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: zoom-out;
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-height: min(92vh, 1100px);
  max-width: min(92vw, 420px);
  border-radius: 22px;
  box-shadow: var(--shadow-phone);
  cursor: default;
}
.lightbox__close {
  position: absolute;
  top: 18px; right: 18px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: none;
  border-radius: 999px;
  width: 42px; height: 42px;
  font-size: 1.4rem;
  cursor: pointer;
}

@media (max-width: 960px) {
  .hero__grid,
  .feature,
  .feature--flip { grid-template-columns: 1fr; }
  .feature--flip .feature__media { order: 0; }
  .grid-3, .steps { grid-template-columns: 1fr; }
  .help-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .toc-mobile { display: block; }
  .positioning__inner { flex-direction: column; align-items: center; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--navy-800);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding: 12px 10px; }
  .nav .btn { width: 100%; margin-top: 8px; }
  .section { padding: 64px 0; }
  .hero { padding: 48px 0 64px; }
  .help-step { grid-template-columns: 1fr; }
  .help-step .phone { margin-inline: auto; }
  .site-header__inner { position: relative; }
}