:root {
  --blue-deep: #0a3d6e;
  --blue-mid: #1a6fb5;
  --blue-bright: #2d9cdb;
  --blue-soft: #e8f4fc;
  --ink: #15202b;
  --muted: #5a6a7a;
  --line: #d4e3ef;
  --surface: #ffffff;
  --bg: #f3f8fc;
  --accent: #0ea5a0;
  --danger: #c0392b;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(10, 61, 110, 0.08);
  --font-display: "Sora", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Sora", sans-serif;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #cce8f8 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #d9f3ef 0%, transparent 50%),
    linear-gradient(180deg, #eef6fb 0%, var(--bg) 180px, #f7fafc 100%);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
}

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

a {
  color: var(--blue-mid);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--blue-deep);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(212, 227, 239, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 14px rgba(10, 61, 110, 0.18);
}

.brand span {
  font-size: 1.15rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--blue-deep);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  color: var(--ink);
  font-size: 0.9rem;
}

/* Hero */
.hero {
  padding: 3.2rem 0 2.4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-kicker {
  display: inline-block;
  color: var(--blue-mid);
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.6vw, 2.75rem);
  line-height: 1.25;
  color: var(--blue-deep);
  font-weight: 700;
}

.hero-lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-mid), var(--blue-deep));
  color: #fff;
  box-shadow: 0 10px 28px rgba(26, 111, 181, 0.35);
}

.btn-primary:hover {
  color: #fff;
}

.btn-ghost {
  background: var(--surface);
  color: var(--blue-deep);
  border: 1px solid var(--line);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 22px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.8);
  animation: floaty 6s ease-in-out infinite;
}

.hero-badge {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  background: rgba(255, 255, 255, 0.94);
  padding: 0.65rem 0.9rem;
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--blue-deep);
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(10, 61, 110, 0.12);
  animation: fadeUp 0.8s ease both 0.3s;
}

@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
.section {
  padding: 2.75rem 0;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-head h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
  color: var(--blue-deep);
  line-height: 1.3;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 46em;
}

.prose {
  color: var(--ink);
}

.prose p {
  margin: 0 0 1rem;
}

.prose h2,
.prose h3 {
  color: var(--blue-deep);
  font-family: var(--font-display);
  line-height: 1.35;
}

.prose h2 {
  margin: 2rem 0 0.85rem;
  font-size: 1.45rem;
}

.prose h3 {
  margin: 1.5rem 0 0.65rem;
  font-size: 1.15rem;
}

.prose ul,
.prose ol {
  margin: 0 0 1.1rem;
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin: 1.25rem 0 1.75rem;
  box-shadow: var(--shadow);
}

.toc strong {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--blue-deep);
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  columns: 2;
  gap: 1.5rem;
}

.toc li {
  margin-bottom: 0.35rem;
  break-inside: avoid;
}

.toc a {
  color: var(--ink);
}

.toc a:hover {
  color: var(--blue-mid);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
}

.feature:hover {
  transform: translateY(-4px);
}

.feature img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  border-radius: 10px;
  margin-bottom: 0.85rem;
  background: var(--blue-soft);
}

.feature h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  color: var(--blue-deep);
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  align-items: center;
  margin: 1.75rem 0;
}

.split.reverse {
  direction: rtl;
}

.split.reverse > * {
  direction: ltr;
}

.split img {
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  max-height: 520px;
  width: 100%;
  object-fit: cover;
  object-position: top;
}

.split-copy h3 {
  margin-top: 0;
  color: var(--blue-deep);
  font-family: var(--font-display);
}

.shot-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  margin: 1.25rem 0;
}

.shot-row img {
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  width: 100%;
  transition: transform 0.25s ease;
}

.shot-row img:hover {
  transform: scale(1.02);
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 0.9rem;
  margin: 1.25rem 0;
}

.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1rem 3.4rem;
  position: relative;
  box-shadow: var(--shadow);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-bright), var(--blue-deep));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  color: var(--blue-deep);
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1.05rem;
  margin-bottom: 0.65rem;
  box-shadow: var(--shadow);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--blue-deep);
}

.faq details p {
  margin: 0.65rem 0 0;
  color: var(--muted);
}

.note {
  background: linear-gradient(135deg, #eaf6ff, #e8faf7);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin: 1.25rem 0;
}

.note strong {
  color: var(--blue-deep);
}

.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.chip {
  display: inline-flex;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--blue-deep);
  font-size: 0.88rem;
  font-weight: 500;
}

.chip:hover {
  background: var(--blue-soft);
  color: var(--blue-deep);
}

.page-hero {
  padding: 2.4rem 0 1.2rem;
}

.page-hero h1 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  color: var(--blue-deep);
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 42em;
}

.legal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow);
  margin-bottom: 2.5rem;
}

.legal h2 {
  margin-top: 1.6rem;
}

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin: 0;
  color: var(--blue-deep);
  font-family: var(--font-display);
}

.error-page p {
  color: var(--muted);
  max-width: 28em;
  margin: 0.75rem auto 1.4rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  background: linear-gradient(180deg, #0a3d6e 0%, #072f54 100%);
  color: rgba(255, 255, 255, 0.88);
  padding: 2.4rem 0 1.4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
}

.site-footer a:hover {
  color: #fff;
}

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

.footer-brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.footer-brand strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.footer-col h3 {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
  color: #fff;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
}

/* Mobile */
@media (max-width: 900px) {
  .hero-grid,
  .split,
  .split.reverse,
  .footer-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .split.reverse {
    direction: ltr;
  }

  .shot-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .toc ol {
    columns: 1;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.5rem 0 0.75rem;
  }

  .nav.open {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .feature img,
  .split img {
    max-height: 420px;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 2rem;
  }

  .cta-row .btn {
    width: 100%;
  }

  .shot-row {
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
  }
}