@import url('https://fonts.googleapis.com/css2?family=Literata:opsz,wght@7..72,600;7..72,700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
  --bg: #f5f7fb;
  --paper: #ffffff;
  --ink: #1a2332;
  --muted: #5d6b7c;
  --line: #d7dee8;
  --accent: #2b5ea8;
  --accent-2: #1e457c;
  --soft: #e8f0fb;
  --nav: #162033;
  --max: 1000px;
  --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(43, 94, 168, 0.12), transparent 60%),
    linear-gradient(180deg, #fbfcfe, var(--bg));
  line-height: 1.8;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); text-decoration: underline; }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(22, 32, 51, 0.96);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.7rem 0;
}
.brand {
  display: flex; align-items: center; gap: 0.55rem;
  color: #fff; font-weight: 700; text-decoration: none;
}
.brand:hover { color: #fff; text-decoration: none; }
.brand img { border-radius: 8px; }
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.25); background: transparent; cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: #fff; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.site-nav ul { display: flex; gap: 0.2rem 1rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.site-nav a {
  color: rgba(255,255,255,0.82); font-size: 0.93rem; text-decoration: none;
  padding: 0.2rem 0; border-bottom: 2px solid transparent;
}
.site-nav a:hover, .site-nav a.active { color: #fff; border-bottom-color: #8eb6ef; text-decoration: none; }

.site-ads { background: var(--paper); border-bottom: 1px solid var(--line); }
.site-ads .wrap { padding: 0.5rem 0 0.15rem; }
.applist-title { text-align: center; font-size: 0.88rem; font-weight: 700; margin: 0 0 0.3rem; }
#ads { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 12px; margin: 0; padding: 0 0 0.4rem; }
#ads > div { width: 70px; text-align: center; }
#ads figure { margin: 0; }
#ads a { display: inline-block; border-radius: 15px; line-height: 0; text-decoration: none; }
#ads img {
  width: 65px; height: 65px; object-fit: cover; border-radius: 18px;
  box-shadow: 0 6px 18px rgba(24,24,24,0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
#ads img:hover { transform: translateY(-4px) scale(1.04); box-shadow: 0 10px 24px rgba(24,24,24,0.18); }
#ads .caption {
  height: 15px; font-size: 11px; color: #666; margin-top: 4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.banner {
  padding: 2.2rem 0 1.6rem;
}
.banner-inner {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 1.4rem; align-items: center;
}
.tag {
  display: inline-block; background: var(--soft); color: var(--accent-2);
  font-size: 0.82rem; font-weight: 700; padding: 0.28rem 0.65rem; border-radius: 999px;
  margin-bottom: 0.7rem;
}
.banner h1 {
  font-family: Literata, 'Noto Sans SC', serif;
  font-size: clamp(1.55rem, 3.1vw, 2.3rem);
  line-height: 1.34; margin: 0 0 0.85rem;
}
.banner .intro { margin: 0 0 1.1rem; color: var(--muted); font-size: 1.02rem; max-width: 36em; }
.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.65rem 1.1rem; border-radius: 999px; font-weight: 700;
  text-decoration: none; border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-main { background: var(--accent); color: #fff; }
.btn-main:hover { background: var(--accent-2); color: #fff; }
.btn-sub { background: var(--paper); color: var(--ink); border-color: var(--line); }
.btn-sub:hover { border-color: var(--accent); color: var(--accent); }
.banner-img img {
  width: 100%; max-height: 460px; object-fit: cover; object-position: top;
  border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 14px 32px rgba(22, 32, 51, 0.12);
}

.jump {
  display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0 0 0.4rem;
}
.jump a {
  background: var(--paper); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.4rem 0.7rem; font-size: 0.9rem; color: var(--ink); text-decoration: none;
}
.jump a:hover { border-color: var(--accent); color: var(--accent); }

.page-main { padding-bottom: 2.8rem; }
.sec { padding: 1.8rem 0; border-top: 1px solid var(--line); }
.sec h2 {
  font-family: Literata, 'Noto Sans SC', serif;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  margin: 0 0 0.75rem; line-height: 1.35;
}
.sec h3 { font-size: 1.06rem; margin: 1.2rem 0 0.45rem; }
.sec p { margin: 0 0 0.85rem; }
.sec ul, .sec ol { margin: 0 0 0.9rem; padding-left: 1.2rem; }
.sec li { margin: 0.28rem 0; }

.qa {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.05rem; margin: 0 0 0.7rem;
}
.qa h3 { margin: 0 0 0.45rem; font-size: 1.02rem; color: var(--accent-2); }
.qa p:last-child { margin-bottom: 0; }

.pair {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 1.15rem; align-items: start; margin: 1rem 0;
}
.pair.rev { grid-template-columns: 1.1fr 0.9fr; }
.pair.rev .pic { order: 2; }
.pic img {
  width: 100%; border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 8px 20px rgba(22, 32, 51, 0.08);
}
.txt p:last-child { margin-bottom: 0; }

.thumbs {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin: 1rem 0;
}
.thumbs figure {
  margin: 0; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.thumbs img { width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: top; }
.thumbs figcaption { padding: 0.5rem 0.6rem 0.65rem; font-size: 0.86rem; color: var(--muted); }

.checks {
  background: var(--soft); border-radius: var(--radius); padding: 1rem 1.1rem; margin: 1rem 0;
}
.checks ol { margin: 0; }

.plans {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.65rem; margin: 1rem 0;
}
.plans figure {
  margin: 0; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.plans img { width: 100%; aspect-ratio: 3/5; object-fit: cover; object-position: top; }
.plans figcaption { padding: 0.5rem 0.55rem 0.65rem; font-size: 0.84rem; font-weight: 700; }

.note {
  border-left: 4px solid var(--accent);
  background: #f0f5fc; padding: 0.8rem 0.95rem; margin: 1rem 0; border-radius: 0 10px 10px 0;
}
.note p { margin: 0; }

.faq details {
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 0.8rem 0.95rem; margin: 0 0 0.55rem;
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { margin: 0.6rem 0 0; color: var(--muted); }

.out {
  display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 0.7rem;
}
.out a {
  background: var(--nav); color: #fff; padding: 0.5rem 0.85rem; border-radius: 8px;
  font-weight: 600; font-size: 0.9rem; text-decoration: none;
}
.out a:hover { background: var(--accent); color: #fff; text-decoration: none; }

.breadcrumb { margin: 1.15rem 0 0.35rem; color: var(--muted); font-size: 0.9rem; }
.page-title { font-family: Literata, serif; font-size: clamp(1.5rem, 2.8vw, 2rem); margin: 0 0 0.9rem; }
.legal-content {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.25rem 1.3rem 1.4rem; margin-bottom: 2rem;
}
.legal-content h2 { font-size: 1.12rem; margin: 1.15rem 0 0.45rem; }
.error-box { text-align: center; padding: 3rem 1rem 4rem; }
.error-box h1 { font-family: Literata, serif; font-size: 1.9rem; margin-bottom: 0.5rem; }

.site-footer {
  background: var(--nav); color: rgba(255,255,255,0.78); padding: 2rem 0 1.1rem; margin-top: 0.4rem;
}
.site-footer a { color: #9dbef0; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 1.25rem; margin-bottom: 1.15rem; }
.site-footer h3 { color: #fff; font-size: 0.98rem; margin: 0 0 0.55rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0.28rem 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 0.85rem; font-size: 0.88rem; }

@media (max-width: 900px) {
  .banner-inner, .pair, .pair.rev { grid-template-columns: 1fr; }
  .pair.rev .pic { order: 0; }
  .thumbs { grid-template-columns: 1fr 1fr; }
  .plans { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--nav); max-height: 0; overflow: hidden; transition: max-height 0.25s ease;
  }
  .site-nav.is-open { max-height: 320px; }
  .site-nav ul { flex-direction: column; padding: 0.55rem 1rem 1rem; }
  .site-nav a { display: block; padding: 0.5rem 0; }
}