/* ───────── 配当ねこ こばん — landing page ─────────
   Palette: 生成り (cream) / 朱 (vermilion) / 山吹 (gold) / 抹茶 / 墨 (ink)
*/
:root {
  --cream: #fff7ea;
  --paper: #fffdf7;
  --card: #ffffff;
  --cardalt: #fff1dc;
  --shu: #d64b3c;
  --shu-deep: #b63a2d;
  --gold: #e0b04a;
  --matcha: #7ba05b;
  --sakura: #f4a6b8;
  --ink: #3a2e2a;
  --ink-soft: #8a7a72;
  --line: #eadfcf;
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --maxw: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.9;
  letter-spacing: .02em;
  /* subtle washi grain */
  background-image:
    radial-gradient(rgba(214, 75, 60, .035) 1px, transparent 1px),
    radial-gradient(rgba(58, 46, 42, .025) 1px, transparent 1px);
  background-size: 23px 23px, 37px 37px;
  background-position: 0 0, 11px 17px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; margin: 0; letter-spacing: .04em; }
section { padding: 72px 20px; max-width: var(--maxw); margin: 0 auto; }
strong { font-weight: 700; color: var(--shu-deep); }

/* ── header ── */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 12px 20px;
  background: rgba(255, 247, 234, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 700; font-size: 1.05rem; }
.brand img { border-radius: 9px; }
.top nav { display: flex; gap: 22px; font-size: .9rem; }
.top nav a { position: relative; padding: 4px 0; }
.top nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--shu); transform: scaleX(0); transition: transform .2s; transform-origin: left;
}
.top nav a:hover::after { transform: scaleX(1); }

/* ── hero ── */
.hero {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center;
  padding-top: 64px; padding-bottom: 48px; min-height: 80vh;
}
.kicker { margin: 0 0 18px; }
.tate {
  display: inline-block; writing-mode: vertical-rl; text-orientation: upright;
  font-family: var(--serif); font-size: .85rem; letter-spacing: .3em; color: var(--shu);
  border-right: 1px solid var(--shu); padding-right: 6px; line-height: 1;
}
.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 3.8rem); line-height: 1.3;
}
.hero h1 em {
  font-style: normal; color: var(--shu);
  background: linear-gradient(transparent 62%, rgba(224, 176, 74, .45) 62%);
}
.lead { font-size: 1.05rem; margin: 22px 0 28px; color: #4d403b; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 700; font-size: .95rem;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--shu); color: #fff; box-shadow: 0 8px 20px rgba(214, 75, 60, .25); }
.btn-ghost { border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.hero-tags { list-style: none; display: flex; gap: 10px; flex-wrap: wrap; padding: 0; margin: 26px 0 0; }
.hero-tags li {
  font-size: .8rem; padding: 4px 12px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--paper); color: var(--ink-soft);
}

.hero-art { position: relative; height: 520px; }
.washi-circle {
  position: absolute; right: 8%; top: 4%; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff 0%, var(--cardalt) 55%, #fde4c4 100%);
  box-shadow: inset 0 0 0 10px rgba(255, 255, 255, .5);
}
.hero-art .mascot {
  position: absolute; left: 0; bottom: 0; width: 320px;
  filter: drop-shadow(0 18px 24px rgba(58, 46, 42, .18));
  animation: float 5s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.phone {
  position: absolute; right: 0; top: 10%; width: 210px; aspect-ratio: 1206 / 2622;
  border-radius: 34px; overflow: hidden; border: 6px solid #1c1714;
  box-shadow: 0 30px 50px rgba(58, 46, 42, .28); background: #1c1714;
  transform: rotate(5deg);
}
.hanko {
  position: absolute; left: 56%; top: 2%;
  width: 72px; height: 72px; border-radius: 50%;
  border: 3px solid var(--shu); color: var(--shu);
  font-family: var(--serif); font-weight: 700; font-size: 1.15rem; line-height: 1.1;
  display: grid; place-items: center; text-align: center;
  transform: rotate(-12deg); opacity: .85;
  box-shadow: inset 0 0 0 2px var(--cream), inset 0 0 0 3.5px var(--shu);
  mix-blend-mode: multiply;
}

/* ── seigaiha divider ── */
.seigaiha {
  height: 56px; opacity: .55;
  background:
    radial-gradient(circle at 50% 100%, transparent 12px, var(--line) 12px, var(--line) 13px, transparent 13px),
    radial-gradient(circle at 50% 100%, transparent 18px, var(--line) 18px, var(--line) 19px, transparent 19px),
    radial-gradient(circle at 50% 100%, transparent 24px, var(--line) 24px, var(--line) 25px, transparent 25px);
  background-size: 56px 28px;
  background-position: 0 0, 0 0, 0 0;
  mask-image: linear-gradient(to right, transparent, #000 20%, #000 80%, transparent);
}

/* ── section headings ── */
.h-section {
  display: flex; align-items: center; gap: 14px;
  font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 36px;
}
.h-section .num {
  display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--shu); color: #fff; font-size: 1.05rem; flex: none;
}
.h-section::after { content: ""; flex: 1; height: 1px; background: var(--line); margin-left: 8px; }

/* ── features ── */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: 20px; padding: 30px 24px 24px;
  transition: transform .2s, box-shadow .2s;
}
.feature:hover { transform: translateY(-4px); box-shadow: 0 16px 30px rgba(58, 46, 42, .08); }
.feature h3 { font-size: 1.15rem; margin: 6px 0 10px; }
.feature p { margin: 0; font-size: .93rem; color: #4d403b; }
.stamp {
  display: inline-block; font-family: var(--serif); font-weight: 700; font-size: .8rem;
  color: var(--shu); border: 1.5px solid var(--shu); border-radius: 4px; padding: 1px 8px;
  letter-spacing: .15em;
}

/* ── screens ── */
.screen-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.screens figure { margin: 0; text-align: center; }
.screens img {
  border-radius: 28px; border: 5px solid #1c1714; box-shadow: 0 20px 40px rgba(58, 46, 42, .2);
  margin: 0 auto; max-width: 260px;
}
.screens figcaption { margin-top: 14px; font-family: var(--serif); font-size: .95rem; color: var(--ink-soft); }

/* ── privacy ── */
.privacy { max-width: none; background: var(--ink); color: #f2e8dc; padding: 80px 20px; }
.privacy-inner { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 300px 1fr; gap: 40px; align-items: center; }
.privacy .h-section { color: #fff; }
.privacy .h-section .num { background: var(--gold); color: var(--ink); }
.privacy .h-section::after { background: rgba(255, 255, 255, .15); }
.privacy strong { color: var(--gold); }
.privacy p { font-size: 1.02rem; }
.privacy-mascot { width: 100%; filter: drop-shadow(0 10px 20px rgba(0, 0, 0, .35)); }
.checks { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 8px; }
.checks li { padding-left: 30px; position: relative; }
.checks li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 50%;
  background: var(--matcha); color: #fff; font-size: .8rem; display: grid; place-items: center; margin-top: 5px;
}

/* ── pricing ── */
.pricing-lead { margin: -16px 0 30px; color: var(--ink-soft); }
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: stretch; }
.plan {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  padding: 26px 22px;
}
.plan h3 { font-size: 1.05rem; color: var(--ink-soft); font-weight: 500; }
.price { font-family: var(--serif); font-size: 2rem; font-weight: 700; margin: 6px 0 12px; }
.price span { font-size: .9rem; color: var(--ink-soft); margin-left: 4px; font-family: var(--sans); font-weight: 400; }
.plan ul { list-style: none; padding: 0; margin: 0; font-size: .9rem; color: #4d403b; }
.plan li { padding: 6px 0; border-top: 1px dashed var(--line); }
.plan-best { background: var(--cardalt); border: 2px solid var(--gold); }
.ribbon {
  position: absolute; top: -14px; right: 18px; background: var(--shu); color: #fff;
  font-family: var(--serif); font-size: .8rem; padding: 3px 12px; border-radius: 999px; letter-spacing: .1em;
}

/* ── faq ── */
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 4px 20px; margin-bottom: 10px;
}
.faq summary { cursor: pointer; font-weight: 700; padding: 12px 0; list-style: none; position: relative; padding-right: 30px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "＋"; position: absolute; right: 0; top: 12px; color: var(--shu); font-weight: 400;
}
.faq details[open] summary::after { content: "－"; }
.faq p { margin: 0 0 14px; color: #4d403b; font-size: .95rem; }

/* ── footer ── */
.foot { text-align: center; padding: 60px 20px 40px; border-top: 1px solid var(--line); }
.foot img { margin: 0 auto 10px; }
.foot-name { font-family: var(--serif); font-weight: 700; margin: 0 0 14px; }
.foot-note { max-width: 640px; margin: 0 auto 10px; font-size: .78rem; color: var(--ink-soft); }
.foot-copy { font-size: .78rem; color: var(--ink-soft); margin: 0; }

/* ── responsive ── */
@media (max-width: 900px) {
  .feature-grid, .screen-row { grid-template-columns: repeat(2, 1fr); }
  .plans { grid-template-columns: repeat(2, 1fr); }
  .privacy-inner { grid-template-columns: 1fr; }
  .privacy-mascot { width: 220px; margin: 0 auto; }
}
@media (max-width: 720px) {
  section { padding: 56px 16px; }
  .top nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 40px; }
  .tate { writing-mode: horizontal-tb; text-orientation: mixed; border-right: 0; border-left: 2px solid var(--shu); padding: 0 0 0 10px; letter-spacing: .2em; }
  .hero-art { height: 440px; }
  .washi-circle { width: 300px; height: 300px; right: 0; }
  .hero-art .mascot { width: 240px; }
  .phone { width: 160px; right: 4px; }
  .hanko { left: 50%; top: 0; }
  .feature-grid, .screen-row, .plans { grid-template-columns: 1fr; }
  .screens img { max-width: 240px; }
}