:root {
  --ink: #192031;
  --muted: #687083;
  --line: #e6e7ed;
  --canvas: #f6f6fb;
  --panel: #ffffff;
  --purple: #6957e8;
  --purple-dark: #5140c8;
  --purple-soft: #eeebff;
  --green: #249763;
  --dark: #171a2a;
  --shadow: 0 18px 55px rgba(31, 28, 67, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 99; padding: 10px 14px; border-radius: 8px; background: var(--dark); color: #fff; }
.skip-link:focus { left: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(230, 231, 237, .9);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(14px);
}
.nav-shell { width: min(1120px, calc(100% - 36px)); height: 72px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; color: #fff; background: linear-gradient(145deg, #7b6bff, #4f3ac9); box-shadow: 0 9px 22px rgba(105, 87, 232, .28); font-size: 15px; font-weight: 900; }
.brand-copy strong { display: block; letter-spacing: -.025em; }
.brand-copy small { display: block; margin-top: 1px; color: #8a90a0; font-size: 9px; letter-spacing: .12em; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: #5f6779; text-decoration: none; font-size: 13px; font-weight: 700; }
.nav-links a:hover { color: var(--purple); }
.nav-links .login-link { padding: 10px 15px; border-radius: 10px; color: #fff; background: var(--purple); box-shadow: 0 8px 18px rgba(105, 87, 232, .18); }
.nav-links .login-link:hover { color: #fff; background: var(--purple-dark); }
.hero { position: relative; overflow: hidden; padding: 102px 0 92px; background: radial-gradient(circle at 78% 25%, rgba(121, 105, 255, .19), transparent 29%), radial-gradient(circle at 24% 84%, rgba(126, 231, 187, .15), transparent 27%), linear-gradient(145deg, #fbfaff, #f3f4fa); }
.hero::after { content: ""; position: absolute; inset: 0; opacity: .28; background-image: linear-gradient(#dcd9f2 1px, transparent 1px), linear-gradient(90deg, #dcd9f2 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(to bottom, #000, transparent 80%); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; width: min(1120px, calc(100% - 36px)); margin: auto; display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr); align-items: center; gap: 70px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 19px; color: var(--purple); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.eyebrow::before { content: ""; width: 28px; height: 2px; border-radius: 9px; background: var(--purple); }
.hero h1 { max-width: 650px; margin: 0; font-size: clamp(42px, 6vw, 72px); line-height: 1.12; letter-spacing: -.06em; }
.hero h1 span { color: var(--purple); }
.hero-lead { max-width: 610px; margin: 25px 0 0; color: var(--muted); font-size: 16px; line-height: 2; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: #4f5769; text-decoration: none; font-size: 13px; font-weight: 800; }
.button.primary { border-color: var(--purple); background: var(--purple); color: #fff; box-shadow: 0 10px 25px rgba(105, 87, 232, .22); }
.button.primary:hover { background: var(--purple-dark); }
.product-card { padding: 17px; border: 1px solid #dedbee; border-radius: 24px; background: rgba(255, 255, 255, .94); box-shadow: var(--shadow); transform: rotate(1deg); }
.mini-bar { height: 45px; display: flex; align-items: center; gap: 7px; padding: 0 13px; border-bottom: 1px solid #efeff4; }
.mini-dot { width: 7px; height: 7px; border-radius: 50%; background: #d5d7e0; }
.mini-title { margin-left: 7px; color: #82889a; font-size: 9px; font-weight: 800; }
.mini-body { display: grid; gap: 10px; padding: 16px 5px 4px; }
.mini-stat { padding: 15px; border: 1px solid #ececf2; border-radius: 13px; background: #fafafd; }
.mini-stat-head { display: flex; justify-content: space-between; color: #747b8d; font-size: 9px; font-weight: 700; }
.mini-stat strong { display: block; margin-top: 8px; font-size: 19px; }
.mini-pill { padding: 4px 7px; border-radius: 999px; background: #e9f8f1; color: var(--green); font-size: 8px; }
.mini-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.mini-network { padding: 14px; border-radius: 13px; color: #fff; font-size: 10px; font-weight: 800; }
.mini-network.instagram { background: linear-gradient(135deg, #8b4de8, #ef4c82, #f1a23e); }
.mini-network.threads { background: #1d1d21; }
.section { padding: 86px 0; }
.section.white { background: #fff; }
.section-inner { width: min(1120px, calc(100% - 36px)); margin: auto; }
.section-heading { max-width: 680px; }
.section-heading p { margin: 0 0 12px; color: var(--purple); font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.section-heading h2 { margin: 0; font-size: clamp(29px, 4vw, 43px); line-height: 1.3; letter-spacing: -.045em; }
.section-heading .section-copy { margin: 18px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; font-weight: 400; letter-spacing: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 38px; }
.feature-card { min-height: 238px; padding: 27px; border: 1px solid var(--line); border-radius: 19px; background: #fff; box-shadow: 0 8px 30px rgba(35, 38, 65, .04); }
.feature-number { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px; background: var(--purple-soft); color: var(--purple); font-size: 11px; font-weight: 900; }
.feature-card h3 { margin: 22px 0 10px; font-size: 18px; letter-spacing: -.03em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.network-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; }
.network-item { display: flex; align-items: center; gap: 13px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 15px; background: #fafafd; }
.network-icon { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: var(--dark); color: #fff; font-size: 10px; font-weight: 900; }
.network-icon.ig { background: linear-gradient(135deg, #8b4de8, #ef4c82, #f1a23e); }
.network-icon.tk { background: #121216; }
.network-item strong { display: block; font-size: 13px; }
.network-item small { display: block; margin-top: 3px; color: #8a90a0; font-size: 10px; }
.notice { margin-top: 24px; padding: 16px 18px; border-left: 3px solid var(--purple); border-radius: 0 10px 10px 0; background: #f5f3ff; color: #69627d; font-size: 12px; line-height: 1.8; }
.cta { padding: 38px; border-radius: 24px; background: linear-gradient(140deg, #20243b, #171a2a); color: #fff; display: flex; justify-content: space-between; align-items: center; gap: 30px; box-shadow: 0 22px 55px rgba(23, 26, 42, .18); }
.cta h2 { margin: 0; font-size: 27px; letter-spacing: -.04em; }
.cta p { margin: 9px 0 0; color: #aeb3c4; font-size: 12px; line-height: 1.8; }
.site-footer { padding: 46px 0 26px; background: #fff; border-top: 1px solid var(--line); }
.footer-inner { width: min(1120px, calc(100% - 36px)); margin: auto; }
.footer-main { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; }
.footer-main p { max-width: 360px; margin: 13px 0 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { color: #5f6779; font-size: 11px; font-weight: 700; text-decoration: none; }
.copyright { margin-top: 34px; padding-top: 20px; border-top: 1px solid #f0f0f4; color: #9aa0ad; font-size: 10px; }

.legal-hero { padding: 78px 0 54px; background: linear-gradient(145deg, #fbfaff, #f2f2fa); border-bottom: 1px solid var(--line); }
.legal-hero-inner { width: min(860px, calc(100% - 36px)); margin: auto; }
.legal-hero h1 { margin: 0; font-size: clamp(35px, 5vw, 53px); letter-spacing: -.055em; }
.legal-hero p { margin: 17px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.legal-wrap { width: min(860px, calc(100% - 36px)); margin: 0 auto; padding: 58px 0 90px; }
.legal-summary { margin-bottom: 40px; padding: 20px 22px; border: 1px solid #dedbee; border-radius: 15px; background: #f7f5ff; color: #5e5872; font-size: 13px; line-height: 1.9; }
.legal-section { padding: 30px 0; border-top: 1px solid var(--line); }
.legal-section:first-of-type { border-top: 0; }
.legal-section h2 { margin: 0 0 13px; font-size: 19px; letter-spacing: -.025em; }
.legal-section p, .legal-section li { color: #555e70; font-size: 13px; line-height: 1.95; }
.legal-section p { margin: 10px 0; }
.legal-section ol, .legal-section ul { margin: 10px 0; padding-left: 1.5em; }
.legal-section li + li { margin-top: 7px; }
.legal-section a { color: var(--purple); overflow-wrap: anywhere; }
.legal-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; color: #858c9c; font-size: 11px; }

@media (max-width: 820px) {
  .nav-links a:not(.login-link) { display: none; }
  .hero { padding: 72px 0 68px; }
  .hero-inner { grid-template-columns: 1fr; gap: 42px; }
  .hero h1 { font-size: clamp(40px, 12vw, 60px); }
  .product-card { max-width: 520px; transform: none; }
  .feature-grid, .network-list { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .cta { align-items: stretch; flex-direction: column; }
  .cta .button { width: 100%; }
}
@media (max-width: 560px) {
  .nav-shell { height: 64px; }
  .brand-copy small { display: none; }
  .hero-lead { font-size: 14px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .mini-row { grid-template-columns: 1fr; }
  .section { padding: 66px 0; }
  .footer-main { flex-direction: column; }
  .footer-links { display: grid; gap: 12px; }
  .legal-hero { padding: 58px 0 42px; }
  .legal-wrap { padding-top: 38px; }
}