/* =====================================================================
   kabuuun-support.css  —  KABUUUN（かぶーん）サポートページ
   Self-contained, dark KABUUUN brand (teal + gold on navy).
   Japanese web font: Zen Kaku Gothic New (loaded in the template head),
   with a Japanese-only fallback stack — no Chinese glyph fallback.
   ===================================================================== */

:root {
  --kb-bg: #0a1727;
  --kb-bg-2: #0d1b2e;
  --kb-surface: #14263b;
  --kb-surface-2: #182d45;
  --kb-card: #16293f;
  --kb-accent: #17be9b;
  --kb-accent-2: #35d6b4;
  --kb-gold: #d9b25e;
  --kb-text: #f2f6fa;
  --kb-sub: #9fb2c4;
  --kb-line: #26405c;
  --kb-line-soft: rgba(159, 178, 196, 0.14);
  --kb-radius: 16px;
  --kb-radius-lg: 22px;
  --kb-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --kb-font: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
  --kb-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }

.kb {
  margin: 0;
  font-family: var(--kb-font);
  color: var(--kb-text);
  background: var(--kb-bg);
  line-height: 1.85;
  letter-spacing: 0.012em;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.kb a { color: var(--kb-accent); text-decoration: none; }
.kb img { max-width: 100%; display: block; }

/* ---------- Ambient background ---------- */
.kb-bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }

.kb-bg__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(23, 190, 155, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 190, 155, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 70%);
}

.kb-bg__orb {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
}
.kb-bg__orb--1 {
  width: 520px; height: 520px; top: -160px; right: -120px;
  background: radial-gradient(circle, rgba(23, 190, 155, 0.55), transparent 70%);
}
.kb-bg__orb--2 {
  width: 480px; height: 480px; top: 220px; left: -180px;
  background: radial-gradient(circle, rgba(217, 178, 94, 0.28), transparent 70%);
}

/* ---------- Layout ---------- */
.kb-nav, .kb-hero, .kb-main, .kb-footer { position: relative; z-index: 1; }

.kb-nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 940px; margin: 0 auto; padding: 18px 22px;
}
.kb-nav__brand { display: inline-flex; align-items: center; gap: 10px; color: var(--kb-text); }
.kb-nav__icon { width: 30px; height: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,.4); }
.kb-nav__name { font-weight: 900; letter-spacing: 0.06em; color: var(--kb-accent); }
.kb-nav__links { display: flex; align-items: center; gap: 20px; }
.kb-nav__links a { color: var(--kb-sub); font-size: 0.9rem; transition: color 0.2s var(--kb-ease); }
.kb-nav__links a:hover { color: var(--kb-text); }
.kb-nav__cta {
  padding: 8px 16px; border-radius: 999px; color: #06231d !important;
  background: linear-gradient(120deg, var(--kb-accent), var(--kb-accent-2));
  font-weight: 700; box-shadow: 0 8px 20px -8px rgba(23, 190, 155, 0.7);
  transition: transform 0.2s var(--kb-ease), box-shadow 0.2s var(--kb-ease);
}
.kb-nav__cta:hover { transform: translateY(-1px); box-shadow: 0 12px 26px -8px rgba(23, 190, 155, 0.85); }

/* ---------- Hero ---------- */
.kb-hero { max-width: 940px; margin: 0 auto; padding: 40px 22px 20px; text-align: center; }
.kb-hero__inner { display: flex; flex-direction: column; align-items: center; }

.kb-hero__icon-wrap {
  padding: 12px; border-radius: 26px; margin-bottom: 20px;
  background: linear-gradient(160deg, rgba(23,190,155,.22), rgba(217,178,94,.12));
  border: 1px solid var(--kb-line);
  box-shadow: var(--kb-shadow);
}
.kb-hero__icon { width: 96px; height: 96px; border-radius: 20px; }

.kb-hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
  font-size: 0.78rem; color: var(--kb-sub);
  background: rgba(23, 190, 155, 0.08); border: 1px solid var(--kb-line);
}
.kb-hero__badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--kb-accent);
  box-shadow: 0 0 0 0 rgba(23, 190, 155, 0.6); animation: kb-pulse 2.2s infinite;
}
@keyframes kb-pulse {
  0% { box-shadow: 0 0 0 0 rgba(23, 190, 155, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(23, 190, 155, 0); }
  100% { box-shadow: 0 0 0 0 rgba(23, 190, 155, 0); }
}

.kb-hero__title {
  margin: 0; font-size: clamp(1.9rem, 6vw, 3rem); font-weight: 900; line-height: 1.2;
  letter-spacing: 0.01em;
}
.kb-hero__reading { font-size: 0.5em; font-weight: 700; color: var(--kb-sub); letter-spacing: 0.04em; }
.kb-hero__support {
  display: inline-block; margin-left: 0.15em;
  background: linear-gradient(120deg, var(--kb-accent), var(--kb-gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.kb-hero__tagline { margin: 18px 0 4px; font-size: clamp(1rem, 3.4vw, 1.2rem); font-weight: 700; color: var(--kb-text); }
.kb-hero__subtitle { margin: 0; color: var(--kb-sub); }

.kb-chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; padding: 0; margin: 22px 0 0; }
.kb-chip {
  font-size: 0.78rem; color: var(--kb-sub);
  padding: 5px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.03); border: 1px solid var(--kb-line);
}

/* ---------- Main / sections ---------- */
.kb-main { max-width: 760px; margin: 0 auto; padding: 30px 22px 20px; }

.kb-section {
  margin: 30px 0; padding: 26px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border: 1px solid var(--kb-line); border-radius: var(--kb-radius-lg);
  box-shadow: var(--kb-shadow);
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.6s var(--kb-ease), transform 0.6s var(--kb-ease);
}
.kb-section.is-visible { opacity: 1; transform: none; }

.kb-section__label {
  margin: 0 0 6px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--kb-accent);
}
.kb-section__title { margin: 0 0 12px; font-size: clamp(1.3rem, 4.4vw, 1.7rem); font-weight: 900; }
.kb-lead { margin: 0 0 18px; color: var(--kb-sub); }
.kb-note { margin: 16px 0 0; font-size: 0.82rem; color: var(--kb-sub); line-height: 1.7; }

/* ---------- Contact cards ---------- */
.kb-contact { display: grid; gap: 14px; }
@media (min-width: 560px) { .kb-contact { grid-template-columns: 1fr 1fr; } }

.kb-contact__card {
  display: flex; align-items: center; gap: 14px;
  padding: 18px; border-radius: var(--kb-radius);
  background: var(--kb-surface); border: 1px solid var(--kb-line);
  color: var(--kb-text) !important;
  transition: transform 0.2s var(--kb-ease), border-color 0.2s var(--kb-ease), background 0.2s var(--kb-ease);
}
.kb-contact__card:hover { transform: translateY(-3px); border-color: var(--kb-accent); background: var(--kb-surface-2); }

.kb-contact__icon {
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(23, 190, 155, 0.12); color: var(--kb-accent);
}
.kb-contact__card--x .kb-contact__icon { background: rgba(255, 255, 255, 0.06); color: var(--kb-text); }
.kb-contact__icon svg { width: 22px; height: 22px; }

.kb-contact__body { display: flex; flex-direction: column; min-width: 0; }
.kb-contact__kicker { font-size: 0.72rem; color: var(--kb-sub); }
.kb-contact__value { font-weight: 700; font-size: 1.02rem; overflow-wrap: anywhere; }
.kb-contact__arrow { margin-left: auto; color: var(--kb-sub); font-weight: 700; transition: transform 0.2s var(--kb-ease); }
.kb-contact__card:hover .kb-contact__arrow { transform: translateX(3px); color: var(--kb-accent); }

/* ---------- FAQ ---------- */
.kb-faq { border-radius: var(--kb-radius); overflow: hidden; border: 1px solid var(--kb-line); }
.kb-faq__item { border-bottom: 1px solid var(--kb-line); background: rgba(255, 255, 255, 0.015); }
.kb-faq__item:last-child { border-bottom: 0; }

.kb-faq__q {
  cursor: pointer; list-style: none; padding: 16px 18px 16px 44px; position: relative;
  font-weight: 700; color: var(--kb-text); transition: color 0.2s var(--kb-ease);
}
.kb-faq__q::-webkit-details-marker { display: none; }
.kb-faq__q::before {
  content: "+"; position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
  color: var(--kb-accent); font-weight: 900; font-size: 1.15rem; transition: transform 0.2s var(--kb-ease);
}
.kb-faq__item[open] .kb-faq__q::before { content: "−"; }
.kb-faq__q:hover { color: var(--kb-accent-2); }

.kb-faq__a { padding: 0 18px 18px 44px; color: var(--kb-sub); }
.kb-faq__a ul { margin: 8px 0 0; padding-left: 1.2em; }
.kb-faq__a li { margin: 4px 0; }
.kb-faq__a b { color: var(--kb-gold); font-weight: 700; }
.kb-faq__a a { color: var(--kb-accent); text-decoration: underline; }

/* ---------- Pricing ---------- */
.kb-plans { display: grid; gap: 14px; }
@media (min-width: 560px) { .kb-plans { grid-template-columns: 1fr 1fr; } }

.kb-plan {
  position: relative; padding: 22px; border-radius: var(--kb-radius);
  background: var(--kb-surface); border: 1px solid var(--kb-line);
  display: flex; flex-direction: column; align-items: flex-start;
}
.kb-plan--featured {
  border-color: var(--kb-accent);
  background: linear-gradient(180deg, rgba(23,190,155,0.10), rgba(23,190,155,0.02));
  box-shadow: 0 16px 40px -18px rgba(23, 190, 155, 0.5);
}
.kb-plan__ribbon {
  position: absolute; top: 14px; right: 14px; font-size: 0.68rem; font-weight: 700;
  padding: 3px 10px; border-radius: 999px; color: #06231d;
  background: linear-gradient(120deg, var(--kb-accent), var(--kb-gold));
}
.kb-plan__name { font-size: 0.9rem; color: var(--kb-sub); font-weight: 700; }
.kb-plan__price { font-size: 2rem; font-weight: 900; margin: 6px 0 2px; letter-spacing: 0.01em; }
.kb-plan__unit { font-size: 0.95rem; font-weight: 700; color: var(--kb-sub); margin-left: 4px; }
.kb-plan__note { font-size: 0.8rem; color: var(--kb-sub); }

/* ---------- Legal links ---------- */
.kb-links { display: flex; flex-wrap: wrap; gap: 12px; }
.kb-link {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 16px; border-radius: 12px;
  background: var(--kb-surface); border: 1px solid var(--kb-line); color: var(--kb-accent);
  transition: transform 0.2s var(--kb-ease), border-color 0.2s var(--kb-ease);
}
.kb-link:hover { transform: translateY(-2px); border-color: var(--kb-accent); }

/* ---------- Footer ---------- */
.kb-footer { border-top: 1px solid var(--kb-line); margin-top: 30px; }
.kb-footer__inner { max-width: 760px; margin: 0 auto; padding: 30px 22px 46px; color: var(--kb-sub); font-size: 0.85rem; }
.kb-footer__brand { margin: 0 0 6px; font-weight: 900; color: var(--kb-accent); letter-spacing: 0.04em; }
.kb-footer__meta { margin: 2px 0; }
.kb-footer__meta a { color: var(--kb-accent); }
.kb-footer__links { display: flex; gap: 16px; margin: 12px 0; }
.kb-footer__links a { color: var(--kb-text); }
.kb-footer__links a:hover { color: var(--kb-accent); }
.kb-footer__disc { margin: 14px 0 8px; font-size: 0.78rem; line-height: 1.7; color: #7f93a6; }
.kb-footer__copy { margin: 0; font-size: 0.76rem; color: #6b7f92; }

/* ---------- Motion preference ---------- */
@media (prefers-reduced-motion: reduce) {
  .kb *, .kb-section { transition: none !important; animation: none !important; }
  .kb-section { opacity: 1 !important; transform: none !important; }
}