/* Sborka site — 共通スタイル(外部フォント・外部CDNなし) */
:root {
  color-scheme: light;
  --bg: #f6fafa;
  --surface: #ffffff;
  --surface-2: #e8f2f3;
  --fg: #14262b;
  --muted: #4b5f65;
  --line: #d3e2e4;
  --accent: #0b7285;
  --accent-fg: #ffffff;
  --accent-soft: #d9eff2;
  --accent-text: var(--accent); /* accent used as text on the page background */
  --audio: #6a52c4;
  --ok: #1a7f37;
  --warn-bg: #fff4de;
  --warn-fg: #5f4300;
  --shadow: 0 1px 2px rgba(20, 20, 20, .05), 0 10px 30px rgba(20, 20, 20, .07);
  --radius: 14px;
  --max: 1040px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.8 system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif;
  word-break: normal;
  overflow-wrap: anywhere;
}
a { color: var(--accent-text); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img, svg { max-width: 100%; }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .6em; letter-spacing: .01em; }
h1 { font-size: clamp(1.9rem, 5vw, 2.9rem); }
h2 { font-size: clamp(1.4rem, 3.4vw, 1.9rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: .3em; }
code, kbd {
  font: .9em/1.4 ui-monospace, "Cascadia Mono", Consolas, monospace;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .1em .4em;
}

.container { width: min(100% - 32px, var(--max)); margin-inline: auto; }
.narrow { width: min(100% - 32px, 760px); margin-inline: auto; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.center { text-align: center; }

/* ---------- header / footer ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 12px 20px; flex-wrap: wrap; padding: 10px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 800; font-size: 1.25rem; letter-spacing: .02em; }
.brand svg { width: 30px; height: 30px; flex: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: .95rem; }
.nav a { color: var(--muted); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }

.site-footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 36px 0 48px; color: var(--muted); font-size: .9rem; }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 24px 48px; justify-content: space-between; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--fg); }

/* ---------- buttons / tags ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
  padding: 12px 22px; border-radius: 999px;
  border: 1.5px solid var(--line); background: var(--surface); color: var(--fg);
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { filter: brightness(1.06); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }

.tag {
  display: inline-flex; align-items: center; white-space: nowrap;
  border: 1px solid var(--line); border-radius: 999px; padding: 0 10px;
  font-size: .78rem; line-height: 22px; color: var(--muted); background: var(--surface);
}
.tag.merge { color: var(--accent-text); border-color: var(--accent-text); }
.tag.audio { color: var(--audio); border-color: var(--audio); }
.tag.video { color: var(--ok); border-color: var(--ok); }
.tag.free { color: var(--muted); }
.tag.draft { color: var(--warn-fg); border-color: var(--warn-fg); background: var(--warn-bg); }

/* ---------- sections ---------- */
section { padding: 56px 0; }
section.alt { background: var(--surface-2); }
.eyebrow { color: var(--accent-text); font-weight: 800; font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: .6em; }
.lead { font-size: 1.1rem; color: var(--muted); }

.hero { padding: 56px 0 40px; }
.hero .grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--accent-text); }
@media (max-width: 860px) { .hero .grid { grid-template-columns: 1fr; } .hero { padding-top: 36px; } }

.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin-bottom: .4em; }
.card p:last-child { margin-bottom: 0; }
.card .icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); font-weight: 800; margin-bottom: 12px; }

.steps { list-style: none; padding: 0; counter-reset: s; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.steps li { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin: 0; }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 800; margin-bottom: 10px; }

.notice { border-radius: var(--radius); padding: 14px 18px; background: var(--warn-bg); color: var(--warn-fg); border: 1px solid color-mix(in srgb, var(--warn-fg) 30%, transparent); font-size: .95rem; margin: 0 0 1.4em; }
.notice strong { color: inherit; }
.notice.info { background: var(--accent-soft); color: var(--fg); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }
.no-list { list-style: none; padding: 0; }
.no-list li { padding-left: 1.6em; position: relative; }
.no-list li::before { content: "×"; position: absolute; left: 0; color: var(--accent-text); font-weight: 800; }
.yes-list { list-style: none; padding: 0; }
.yes-list li { padding-left: 1.6em; position: relative; }
.yes-list li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 800; }

/* ---------- FAQ ---------- */
details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; margin-bottom: 10px; }
summary { cursor: pointer; padding: 14px 0; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent-text); font-weight: 800; flex: none; }
details[open] summary::after { content: "−"; }
details > div { padding: 0 0 14px; color: var(--muted); }
details > div p:last-child { margin-bottom: 0; }

/* ---------- pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; }
.plan.pro { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.plan h3 { font-size: 1.3rem; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.price { font-size: 1.8rem; font-weight: 800; margin: .2em 0 .1em; }
.price small { font-size: .9rem; font-weight: 400; color: var(--muted); }
.plan ul { margin-top: 14px; }

/* ---------- legal / prose ---------- */
.prose { padding: 40px 0 0; }
.prose h2 { margin-top: 2em; padding-top: .4em; border-top: 1px solid var(--line); font-size: 1.3rem; }
.prose h2:first-of-type { border-top: 0; margin-top: 1.2em; }
.placeholder { background: var(--warn-bg); color: var(--warn-fg); border-radius: 6px; padding: 0 .35em; font-weight: 700; }
dl.facts { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
dl.facts > div { display: grid; grid-template-columns: 220px 1fr; border-top: 1px solid var(--line); }
dl.facts > div:first-child { border-top: 0; }
dl.facts dt { background: var(--surface-2); padding: 14px 18px; font-weight: 700; }
dl.facts dd { margin: 0; padding: 14px 18px; }
@media (max-width: 640px) { dl.facts > div { grid-template-columns: 1fr; } dl.facts dt { padding-bottom: 6px; } dl.facts dd { padding-top: 8px; } }

.compare { width: 100%; border-collapse: collapse; font-size: .95rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.compare th, .compare td { padding: 12px 14px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare thead th { background: var(--surface-2); border-top: 0; }
.table-wrap { overflow-x: auto; }

/* ---------- popup mock (Sborka のポップアップのイメージ) ---------- */
.mock { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; font-size: 13px; line-height: 1.5; max-width: 420px; margin-inline: auto; }
.mock-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.mock-head b { color: var(--accent-text); font-size: 15px; }
.mock-head span { border: 1px solid var(--line); border-radius: 6px; padding: 3px 10px; color: var(--muted); }
.mock-bar { padding: 10px 14px 6px; }
.mock-bar div { background: var(--accent); color: var(--accent-fg); text-align: center; border-radius: 8px; padding: 7px; font-weight: 700; }
.mock-group { margin: 6px 14px 14px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.mock-group-h { display: flex; gap: 10px; align-items: center; padding: 8px; border-bottom: 1px solid var(--line); }
.mock-thumb { width: 112px; height: 63px; border-radius: 6px; flex: none; background: linear-gradient(135deg, #3b3f4a, #15161a); display: grid; place-items: center; color: #fff; opacity: .95; }
.mock-thumb::after { content: "▶"; font-size: 18px; opacity: .8; }
.mock-group-h b { display: block; font-size: 12px; }
.mock-group-h small { color: var(--muted); font-size: 11px; }
.mock-row { padding: 8px; border-bottom: 1px solid var(--line); }
.mock-row:last-child { border-bottom: 0; }
.mock-top { display: flex; align-items: center; gap: 6px; }
.mock-top strong { flex: 1; font-size: 12.5px; }
.mock-btn { border: 1px solid var(--line); border-radius: 6px; padding: 2px 10px; background: transparent; color: var(--fg); font-size: 12px; }
.mock-btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.mock-btn.done { background: var(--ok); border-color: var(--ok); color: #fff; }
.mock-tags { display: flex; gap: 4px; margin-top: 5px; flex-wrap: wrap; }
.mock .tag { line-height: 18px; font-size: 11px; padding: 0 8px; }
.mock-caption { text-align: center; margin: 10px 0 0; }

/* ---------- TOP page: centred layout ---------- */
.page-index .hero { padding: 72px 0 56px; background: radial-gradient(70% 46% at 50% 82%, var(--accent-soft), transparent 100%); }
.page-index .hero .grid { display: flex; flex-direction: column; align-items: center; gap: 44px; text-align: center; }
.page-index .hero .grid > div { width: 100%; }
.page-index .hero h1 { max-width: 19em; margin-inline: auto; font-size: clamp(2rem, 5.2vw, 3.2rem); }
.page-index .hero .lead, .page-index .hero .small { max-width: 42em; margin-inline: auto; }
.page-index .hero .btn-row { justify-content: center; margin-bottom: 24px; }
.page-index .hero figure { width: 100%; }
.page-index .mock { max-width: 560px; text-align: left; }
.page-index .mock-caption { text-align: center; }
.page-index .notice { max-width: 820px; margin-inline: auto; text-align: center; }
.page-index section > * > .eyebrow, .page-index section > * > h2 { text-align: center; }
.page-index section > * > h2 { margin-bottom: 1.1em; }
.page-index section > * > p.small { text-align: center; margin-top: 16px; }
.page-index .grid-cards { display: flex; flex-wrap: wrap; justify-content: center; }
.page-index .grid-cards .card { flex: 1 1 280px; max-width: 336px; text-align: center; }
.page-index .card .icon { margin-inline: auto; }
.page-index .steps li { text-align: center; }
.page-index .steps li::before { margin-inline: auto; }
.page-index .two-col .card h3 { text-align: center; }
@media (min-width: 700px) { .page-index #rules .card { flex: 0 1 calc(50% - 8px); max-width: calc(50% - 8px); } }
@media (max-width: 860px) { .page-index .hero { padding-top: 44px; } }

/* Korean: break lines between words, not inside them */
html[lang="ko"] body { word-break: keep-all; }

/* ---------- language menu ---------- */
.header-end { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 18px; }
details.lang { position: relative; background: transparent; border: 0; border-radius: 0; padding: 0; margin: 0; }
details.lang summary { display: inline-flex; justify-content: flex-start; align-items: center; gap: 6px; padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--fg); font-size: .9rem; font-weight: 600; }
details.lang summary::after { content: "▾"; color: var(--muted); font-weight: 400; }
details.lang[open] summary::after { content: "▴"; }
details.lang summary:hover { border-color: var(--accent); }
details.lang ul { position: absolute; right: 0; top: calc(100% + 6px); z-index: 30; min-width: 200px; max-height: min(70vh, 420px); overflow-y: auto; margin: 0; padding: 6px; list-style: none; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow), 0 8px 24px rgba(0, 0, 0, .12); }
details.lang li { margin: 0; }
details.lang a { display: block; padding: 7px 12px; border-radius: 8px; color: var(--fg); text-decoration: none; font-size: .95rem; }
details.lang a:hover { background: var(--surface-2); }
details.lang a[aria-current="true"] { color: var(--accent-text); font-weight: 700; }
@media (max-width: 560px) { details.lang ul { right: auto; left: 0; } }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 8px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 20; border-radius: 8px; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .site-header, .site-footer .nav { display: none; } }