/* ============================================================
   NEXUS MATCH LOVE — style.css
   ============================================================ */

/* --- base reset --- */
html { -webkit-text-size-adjust: 100%; }
:root {
  color-scheme: light;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
img { max-width: 100%; }
[hidden] { display: none !important; }

/* 単一カラム・左揃え。カードを多用せず、細い罫線と余白で区切る構成 */
:root {
  --ground: #FCFAFB;
  --raised: #FFFFFF;
  --ink: #1A1416;
  --ink-soft: #5D5257;
  --rule: #E4DADE;
  --accent: #C42C68;
  --accent-soft: #DC3C78;
  --accent-wash: #FCEEF3;
  --on-accent: #FFFFFF;

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #171215;
    --raised: #1F191C;
    --ink: #F2EDEF;
    --ink-soft: #AEA1A7;
    --rule: #342C30;
    --accent: #F291B4;
    --accent-soft: #DC5A88;
    --accent-wash: #2A1A22;
    --on-accent: #1A1416;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #171215;
  --raised: #1F191C;
  --ink: #F2EDEF;
  --ink-soft: #AEA1A7;
  --rule: #342C30;
  --accent: #F291B4;
  --accent-soft: #DC5A88;
  --accent-wash: #2A1A22;
  --on-accent: #1A1416;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.95;
  margin: 0;
  padding-bottom: 96px;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

section { padding-block: 40px 0; }
section:last-of-type { padding-block-end: 24px; }

h2 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.03em;
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  text-wrap: balance;
}
h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: 0.02em;
}
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

.lede { color: var(--ink-soft); font-size: 14px; }

/* ---------- hero ---------- */
.hero {
  padding-block: 36px 34px;
  border-bottom: 1px solid var(--rule);
}
.hero img { width: 100%; max-width: 360px; height: auto; margin-bottom: 28px; }
.hero .logo-light { display: block; }
.hero .logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero .logo-light { display: none; }
  :root:not([data-theme="light"]) .hero .logo-dark { display: block; }
}
:root[data-theme="dark"] .hero .logo-light { display: none; }
:root[data-theme="dark"] .hero .logo-dark { display: block; }

.hero h1 {
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.01em;
  margin: 0 0 16px;
  text-wrap: balance;
}
.hero .sub { color: var(--ink-soft); font-size: 14px; margin: 0 0 24px; }

.when {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.chip {
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 5px 13px;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-wash);
  white-space: nowrap;
}

/* ---------- buttons ---------- */
.btn {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 17px 20px;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: var(--on-accent);
  text-decoration: none;
  cursor: pointer;
  transition: opacity .18s ease;
}
.btn:hover { opacity: .88; }
.btn:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 3px; }
.btn[aria-disabled="true"] {
  background: transparent;
  color: var(--ink-soft);
  border: 1px dashed var(--rule);
  cursor: default;
}
.btn-note {
  font-size: 12px;
  color: var(--ink-soft);
  text-align: center;
  margin: 10px 0 0;
  line-height: 1.7;
}

/* ---------- points ---------- */
.points { display: grid; gap: 20px; }
.point { display: grid; grid-template-columns: 26px 1fr; gap: 0 12px; }
.point .no {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--accent);
  grid-row: span 2;
  padding-top: 2px;
}
.point p { font-size: 13.5px; color: var(--ink-soft); margin: 0; line-height: 1.85; }

/* ---------- spec list ---------- */
.spec { border-top: 1px solid var(--rule); }
.spec div {
  display: grid;
  grid-template-columns: 94px 1fr;
  gap: 0 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.spec dt { color: var(--ink-soft); font-size: 13px; }
.spec dd { margin: 0; font-weight: 500; }
.spec dd .tbd { color: var(--ink-soft); font-weight: 400; font-style: normal; }
.spec dd small { display: block; font-size: 12px; font-weight: 400; color: var(--ink-soft); margin-top: 2px; line-height: 1.7; }

/* ---------- timeline ---------- */
.flow { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.flow div {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 0 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.flow dt {
  color: var(--accent);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}
.flow dd { margin: 0; }
.flow dd small { display: block; font-size: 12px; color: var(--ink-soft); line-height: 1.7; }

/* ---------- rules ---------- */
.rules { list-style: none; padding: 0; margin: 0; display: grid; gap: 13px; }
.rules li {
  padding-left: 22px;
  position: relative;
  font-size: 13.5px;
  line-height: 1.9;
}
.rules li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 9px;
  height: 1px;
  background: var(--accent);
}

/* ---------- faq ---------- */
details {
  border-bottom: 1px solid var(--rule);
}
details:first-of-type { border-top: 1px solid var(--rule); }
summary {
  cursor: pointer;
  padding: 14px 28px 14px 0;
  font-size: 14px;
  font-weight: 500;
  list-style: none;
  position: relative;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "＋";
  position: absolute;
  right: 2px;
  top: 14px;
  color: var(--accent);
  font-size: 13px;
}
details[open] summary::after { content: "−"; }
summary:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 2px; }
details p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0 0 16px;
  padding-right: 10px;
  line-height: 1.9;
}

/* ---------- fine print ---------- */
.fine { font-size: 12.5px; color: var(--ink-soft); line-height: 1.9; }
.fine p { margin-bottom: 10px; }

footer {
  border-top: 1px solid var(--rule);
  margin-top: 36px;
  padding-block: 26px 10px;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.9;
}
footer .mark { font-family: var(--serif); letter-spacing: 0.14em; color: var(--ink); font-size: 13px; }

/* ---------- sticky cta ---------- */
.sticky {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 20;
  background: var(--raised);
  border-top: 1px solid var(--rule);
  padding-top: 11px;
  padding-bottom: calc(11px + env(safe-area-inset-bottom, 0px));
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.sticky .inner { max-width: 640px; margin: 0 auto; }
.sticky .btn { padding: 14px 20px; font-size: 15px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}