:root {
  --ink: #12131a;
  --ink-soft: #3a3d4a;
  --muted: #6b7080;
  --paper: #f3f1ec;
  --paper-2: #ebe7df;
  --line: rgba(18, 19, 26, 0.1);
  --accent: #4338ca;
  --accent-2: #6366f1;
  --accent-deep: #312e81;
  --glow: rgba(99, 102, 241, 0.28);
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(49, 46, 129, 0.18);
  --radius: 18px;
  --font-display: "Syne", "Noto Sans SC", sans-serif;
  --font-body: "DM Sans", "Noto Sans SC", sans-serif;
  --shell: min(1120px, calc(100% - 2.5rem));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background: var(--paper);
  overflow-x: hidden;
}

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

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

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--white);
  border-radius: 999px;
}

.skip-link:focus {
  top: 1rem;
}

.bg-atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
}

.bg-orb--a {
  width: 42vw;
  height: 42vw;
  top: -12vw;
  right: -8vw;
  background: radial-gradient(circle, #a5b4fc 0%, transparent 70%);
}

.bg-orb--b {
  width: 36vw;
  height: 36vw;
  bottom: 8vh;
  left: -12vw;
  background: radial-gradient(circle, #c4b5fd 0%, transparent 70%);
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 19, 26, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 19, 26, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(243, 241, 236, 0.78);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 0.7rem;
  object-fit: cover;
  box-shadow: 0 8px 20px var(--glow);
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.7rem;
  background:
    radial-gradient(circle at 30% 30%, #a5b4fc, transparent 45%),
    linear-gradient(145deg, var(--accent-2), var(--accent-deep));
  box-shadow: 0 8px 20px var(--glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--muted);
}

.nav {
  display: none;
  gap: 1.25rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.lang-switch {
  display: inline-flex;
  padding: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn.is-active {
  background: var(--ink);
  color: var(--white);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.9rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-sm {
  min-height: 2.35rem;
  padding: 0.4rem 0.95rem;
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: var(--white);
  box-shadow: 0 12px 28px var(--glow);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.55);
  border-color: var(--line);
  color: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  align-content: start;
  padding: 3.5rem 0 0;
}

.hero-copy {
  max-width: 40rem;
  animation: rise 0.8s ease both;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  background: linear-gradient(120deg, var(--ink) 20%, var(--accent-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 1.15rem 0 1.75rem;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: var(--ink-soft);
  max-width: 34rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-meta li::before {
  content: "";
  display: inline-block;
  width: 0.4rem;
  height: 0.4rem;
  margin-right: 0.45rem;
  border-radius: 50%;
  background: var(--accent-2);
  vertical-align: middle;
}

.hero-visual {
  width: min(780px, var(--shell));
  margin: 2rem auto 0;
  animation: rise 1s 0.15s ease both;
}

.hero-shot {
  width: 100%;
  height: auto;
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-bottom: 0;
  transform-origin: center bottom;
  animation: float-in 1.1s 0.25s ease both;
}

.section {
  padding: 5.5rem 0;
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
}

.section-features {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.55) 18%, rgba(255, 255, 255, 0.55) 82%, transparent);
}

.feature-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.feature {
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

.feature h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.feature p {
  margin: 0;
  color: var(--ink-soft);
}

.shot-block {
  margin: 0 0 2.5rem;
}

.shot-block img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.shot-block figcaption {
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.shot-block--alt {
  margin-bottom: 0;
}

.section-ecosystem {
  background: rgba(255, 255, 255, 0.42);
}

.site-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.site-link:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 16px 40px rgba(49, 46, 129, 0.12);
}

.site-link-logo {
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
}

.site-link strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.site-link-url {
  display: block;
  margin-top: 0.15rem;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
}

.site-link-desc {
  display: block;
  margin-top: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-link-cta {
  align-self: center;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 600;
}

.tool-links {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

.tool-links a {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--line);
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.tool-links a:hover {
  color: var(--accent);
  padding-left: 0.35rem;
}

.tool-links strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.tool-links span {
  color: var(--muted);
  font-size: 0.88rem;
  word-break: break-all;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.step-num {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white);
  background: var(--accent);
}

.steps h3 {
  margin: 0.2rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.steps p {
  margin: 0;
  color: var(--ink-soft);
}

.download-panel {
  display: grid;
  gap: 1.5rem;
  padding: 2.25rem;
  border-radius: calc(var(--radius) + 6px);
  background:
    linear-gradient(135deg, rgba(67, 56, 202, 0.95), rgba(49, 46, 129, 0.95)),
    var(--accent-deep);
  color: var(--white);
  box-shadow: var(--shadow);
}

.download-panel h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

.download-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.download-panel .btn-primary {
  background: var(--white);
  color: var(--accent-deep);
  box-shadow: none;
}

.download-panel .btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--white);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 650;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 700;
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list p {
  margin: 0.75rem 0 0;
  color: var(--ink-soft);
  max-width: 48rem;
}

.site-footer {
  padding: 3rem 0 2.5rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  gap: 0.75rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-logo {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.7rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-brand strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.footer-brand span,
.footer-note,
.footer-copy {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 640px) {
  .site-link {
    grid-template-columns: auto 1fr;
  }

  .site-link-cta {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (min-width: 760px) {
  .nav {
    display: flex;
  }

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

  .tool-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.25rem 1.5rem;
  }

  .download-panel {
    grid-template-columns: 1.4fr auto;
    align-items: center;
  }
}

@media (min-width: 980px) {
  .hero {
    padding-top: 4.5rem;
  }

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

  .tool-links {
    grid-template-columns: repeat(4, 1fr);
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }

  .steps li {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-copy,
  .hero-visual,
  .hero-shot,
  .btn {
    animation: none !important;
    transition: none !important;
  }
}