/* ============================================
   Japan PR Launchpad — 和モダン premium B2B LP
   Palette: washi / sumi / shu (vermillion) / gold
   ============================================ */
:root {
  --washi: #f7f3ec;
  --paper: #fffdf8;
  --sumi: #1b1b1f;
  --sumi-soft: #55524b;
  --shu: #c1272d;
  --shu-dark: #9e1f24;
  --gold: #b08d3f;
  --line: #e8e1d4;
  --radius: 4px;
  --shadow: 0 18px 50px -18px rgba(27, 27, 31, .18);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--washi); color: var(--sumi);
  line-height: 1.75; font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}
.serif { font-family: "Cormorant Garamond", Georgia, serif; }
.jp { font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: "Cormorant Garamond", Georgia, serif; font-weight: 600; letter-spacing: .01em; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 243, 236, .92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--sumi); }
.brand .seal { width: 38px; height: 38px; }
.brand .t { font-family: "Cormorant Garamond", serif; font-size: 20px; font-weight: 700; letter-spacing: .04em; }
.brand .t small { display: block; font-family: inherit; font-size: 10px; letter-spacing: .35em; color: var(--sumi-soft); font-weight: 500; }
.nav .cta-mini {
  text-decoration: none; font-size: 14px; font-weight: 700; color: #fff;
  background: var(--shu); padding: 10px 22px; border-radius: var(--radius);
  transition: background .2s;
}
.nav .cta-mini:hover { background: var(--shu-dark); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; text-decoration: none; text-align: center; cursor: pointer;
  font-size: 16px; font-weight: 700; letter-spacing: .02em;
  padding: 17px 38px; border-radius: var(--radius); border: none;
  background: var(--shu); color: #fff; transition: background .2s, transform .15s;
}
.btn:hover { background: var(--shu-dark); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--sumi); border: 1.5px solid var(--sumi); }
.btn.ghost:hover { background: var(--sumi); color: var(--washi); transform: none; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 96px 0 84px; overflow: hidden; }
.hero .vert {
  position: absolute; top: 60px; right: 4%; writing-mode: vertical-rl;
  font-family: "Noto Serif JP", serif; font-weight: 900;
  font-size: clamp(40px, 7vw, 84px); color: rgba(27, 27, 31, .06);
  letter-spacing: .18em; user-select: none; pointer-events: none;
}
.hero-in { max-width: 720px; position: relative; }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--shu); margin-bottom: 26px;
}
.kicker::before { content: ''; width: 34px; height: 1.5px; background: var(--shu); }
.hero h1 {
  font-size: clamp(40px, 6vw, 66px); line-height: 1.12; font-weight: 600;
  margin-bottom: 26px;
}
.hero h1 em { font-style: italic; color: var(--shu); }
.hero .sub { font-size: 19px; color: var(--sumi-soft); max-width: 560px; margin-bottom: 38px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero .note { font-size: 13px; color: var(--sumi-soft); margin-top: 18px; }
.hero .note strong { color: var(--sumi); }

/* ---------- trust strip ---------- */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); }
.trust-in { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.trust .cell { padding: 26px 22px; border-left: 1px solid var(--line); }
.trust .cell:first-child { border-left: none; }
.trust .cell h4 { font-family: inherit; font-size: 14.5px; font-weight: 800; margin-bottom: 4px; }
.trust .cell p { font-size: 13px; color: var(--sumi-soft); line-height: 1.6; }

/* ---------- sections ---------- */
section { padding: 90px 0; }
.sec-kicker { font-size: 12px; font-weight: 700; letter-spacing: .24em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; }
.sec-title { font-size: clamp(30px, 4vw, 44px); line-height: 1.2; margin-bottom: 18px; }
.sec-sub { color: var(--sumi-soft); max-width: 640px; margin-bottom: 48px; font-size: 17px; }

/* ---------- gates (problem) ---------- */
.gates { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.gate { background: var(--paper); padding: 38px 32px; }
.gate .num { font-family: "Cormorant Garamond", serif; font-size: 44px; color: var(--shu); line-height: 1; margin-bottom: 16px; }
.gate h3 { font-size: 22px; margin-bottom: 10px; }
.gate p { font-size: 15px; color: var(--sumi-soft); }
.gate p strong { color: var(--sumi); }

/* ---------- packages ---------- */
.packages { background: var(--sumi); color: var(--washi); }
.packages .sec-kicker { color: var(--gold); }
.packages .sec-sub { color: rgba(247, 243, 236, .65); }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px; }
.plan {
  background: rgba(255, 253, 248, .04); border: 1px solid rgba(247, 243, 236, .14);
  border-radius: var(--radius); padding: 34px 28px; display: flex; flex-direction: column;
  transition: border-color .2s, transform .2s;
}
.plan:hover { border-color: var(--gold); transform: translateY(-3px); }
.plan.featured { border-color: var(--shu); background: rgba(193, 39, 45, .08); position: relative; }
.plan.featured .flag {
  position: absolute; top: -13px; left: 26px; background: var(--shu); color: #fff;
  font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  padding: 4px 14px; border-radius: 2px;
}
.plan h3 { font-size: 21px; margin-bottom: 4px; color: #fff; }
.plan .for { font-size: 12.5px; color: rgba(247, 243, 236, .55); margin-bottom: 18px; }
.plan .price { font-family: "Cormorant Garamond", serif; font-size: 40px; color: var(--gold); line-height: 1; }
.plan .per { font-size: 12px; color: rgba(247, 243, 236, .55); margin: 6px 0 20px; }
.plan ul { list-style: none; flex: 1; margin-bottom: 24px; }
.plan li { font-size: 14px; padding: 7px 0 7px 22px; position: relative; color: rgba(247, 243, 236, .9); border-bottom: 1px dashed rgba(247, 243, 236, .1); }
.plan li::before { content: '·'; position: absolute; left: 4px; color: var(--gold); font-weight: 900; font-size: 22px; line-height: 1; }
.plan .btn { width: 100%; }
.plan .btn.ghost { color: var(--washi); border-color: rgba(247, 243, 236, .4); }
.plan .btn.ghost:hover { background: var(--washi); color: var(--sumi); }
.retainer-bar {
  margin-top: 18px; border: 1px solid rgba(247, 243, 236, .14); border-radius: var(--radius);
  padding: 24px 28px; display: flex; gap: 20px; align-items: center; flex-wrap: wrap;
  background: rgba(255, 253, 248, .03);
}
.retainer-bar .t { flex: 1; min-width: 260px; }
.retainer-bar h3 { color: #fff; font-size: 20px; }
.retainer-bar p { font-size: 14px; color: rgba(247, 243, 236, .65); }
.retainer-bar .price { font-family: "Cormorant Garamond", serif; font-size: 30px; color: var(--gold); white-space: nowrap; }
.packages .fine { font-size: 12.5px; color: rgba(247, 243, 236, .45); margin-top: 22px; line-height: 1.7; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 40px; counter-reset: step; }
.step { position: relative; padding-top: 18px; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: "Cormorant Garamond", serif; font-size: 60px; color: var(--line);
  position: absolute; top: -18px; left: 0; line-height: 1; z-index: 0;
}
.step h3 { font-size: 22px; margin-bottom: 10px; position: relative; }
.step p { font-size: 15px; color: var(--sumi-soft); position: relative; }
.step p strong { color: var(--sumi); }

/* ---------- founder ---------- */
.founder { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.founder-in { display: grid; grid-template-columns: 200px 1fr; gap: 54px; align-items: start; }
.founder .seal-big { width: 150px; height: auto; }
.founder blockquote {
  font-family: "Cormorant Garamond", serif; font-size: 26px; line-height: 1.45;
  font-style: italic; margin-bottom: 26px;
}
.founder .who { font-size: 15px; }
.founder .who strong { font-size: 17px; }
.founder .creds { margin-top: 18px; display: grid; gap: 8px; }
.founder .creds div { font-size: 14px; color: var(--sumi-soft); padding-left: 20px; position: relative; }
.founder .creds div::before { content: '—'; position: absolute; left: 0; color: var(--gold); }

/* ---------- deadline (trade show) ---------- */
.deadline { text-align: center; }
.deadline .box {
  border: 1.5px solid var(--shu); border-radius: var(--radius);
  padding: 44px 34px; max-width: 760px; margin: 0 auto; background: var(--paper);
}
.deadline .jp-mark { font-family: "Noto Serif JP", serif; font-weight: 900; font-size: 13px; letter-spacing: .4em; color: var(--shu); margin-bottom: 14px; }
.deadline h2 { font-size: clamp(26px, 3.6vw, 36px); margin-bottom: 14px; }
.deadline p { color: var(--sumi-soft); max-width: 560px; margin: 0 auto 26px; }

/* ---------- faq ---------- */
.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 26px; margin-bottom: 10px; }
.faq summary { font-weight: 700; font-size: 16px; cursor: pointer; list-style: none; position: relative; padding-right: 30px; }
.faq summary::after { content: '+'; position: absolute; right: 2px; top: 0; font-family: "Cormorant Garamond", serif; font-size: 24px; color: var(--shu); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { font-size: 15px; color: var(--sumi-soft); margin-top: 12px; }

/* ---------- final cta ---------- */
.final { text-align: center; padding: 110px 0; }
.final .jp-line { font-family: "Noto Serif JP", serif; font-weight: 600; font-size: 15px; letter-spacing: .5em; color: var(--gold); margin-bottom: 20px; }
.final h2 { font-size: clamp(34px, 5vw, 54px); margin-bottom: 18px; }
.final p { color: var(--sumi-soft); margin-bottom: 36px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 40px 0 60px; }
footer .f-in { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
footer .fine { font-size: 12.5px; color: var(--sumi-soft); max-width: 560px; line-height: 1.7; }
footer a { color: var(--sumi); }

@media (max-width: 720px) {
  section { padding: 64px 0; }
  .hero { padding: 64px 0 56px; }
  .founder-in { grid-template-columns: 1fr; gap: 28px; }
  .founder .seal-big { width: 100px; }
}