/* ══════════════════════════════════════════════════════════════
   Musubi
   One committed look: dark, ink on near-black.
   Each route carries its own colour inline as --chip.
   ══════════════════════════════════════════════════════════════ */

/* The site is dark, deliberately and only. A shrine at night, ink on black.
   No light variant: one committed look, so every colour below is the colour. */
:root {
  --paper:     #0E0D0B;
  --paper-2:   #15130F;
  --paper-3:   #1C1914;
  --land:      #232019;
  --land-line: #453D30;
  --ink:       #F2ECE1;
  --ink-2:     #B3AA9A;
  --ink-3:     #7C7364;
  --line:      #2B2721;
  --line-soft: #201D18;
  --accent:    #E0764B;
  --accent-2:  #F09468;
  --shadow:    0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.45);
  --font-display: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --wrap: 1080px; --narrow: 680px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.75;
  -webkit-font-smoothing: antialiased; text-underline-offset: .18em;
}
html[lang="ja"] body { line-height: 1.95; letter-spacing: .01em; }
img { max-width: 100%; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: var(--narrow); }

.skip { position: absolute; left: -9999px; background: var(--ink); color: var(--paper); padding: .6rem 1rem; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
:where(a, button, input, textarea, summary):focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px;
}

/* ── Header / footer ────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 62px; }
.brand { display: inline-flex; align-items: baseline; gap: .55rem; text-decoration: none; color: var(--ink); }
.brand-mark { font-family: var(--font-display); font-weight: 900; font-size: 1.45rem; color: var(--accent); line-height: 1; }
.brand-name { font-family: var(--font-display); font-size: .95rem; letter-spacing: .04em; }

.site-nav { display: flex; align-items: center; gap: 1.4rem; margin-left: auto; }
.site-nav a {
  color: var(--ink-2); text-decoration: none; font-size: .8125rem;
  border-bottom: 1px solid transparent; padding-bottom: 2px;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }

.lang-toggle {
  color: var(--ink-2); text-decoration: none; font-size: .8125rem;
  border: 1px solid var(--line); border-radius: 999px; padding: .25rem .8rem;
  white-space: nowrap;
}
.lang-toggle:hover { color: var(--ink); border-color: var(--ink-3); }

/* On a phone the sections are the point, so they stay visible: brand and
   language on the first row, the sections centred on a second. The header is
   sticky in both layouts, so they are reachable from anywhere on the page. */
@media (max-width: 720px) {
  .header-inner {
    flex-wrap: wrap; row-gap: .45rem; min-height: 0;
    padding-top: .55rem; padding-bottom: .6rem;
  }
  .brand { order: 1; margin-right: auto; }
  .lang-toggle { order: 2; }
  .site-nav {
    order: 3; width: 100%; margin-left: 0;
    justify-content: center; gap: 1.4rem;
  }
  .brand-name { display: none; }
}rder-top: 1px solid var(--line); padding: 2.5rem 0 3.5rem; font-size: .8125rem; color: var(--ink-3); }
.footer-note { margin: 0 0 1.2rem; max-width: 62ch; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-bottom: 1.2rem; }
.footer-nav a { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--line); }
.footer-nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }
.footer-rights { margin: 0; }

/* ── Sections & type ────────────────────────────────────── */

.section { padding: clamp(3.25rem, 7vw, 5.5rem) 0; }
.section-tint { background: var(--paper-2); }
.section-survey { background: var(--paper-3); }
.section-page-head { padding-bottom: clamp(2rem, 4vw, 3rem); }

.hero { padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(3rem, 7vw, 5rem); }
.hero-inner { max-width: 780px; }
.status-line {
  margin: 0 0 2rem; padding: .75rem 1rem; font-size: .8125rem; line-height: 1.7;
  color: var(--ink-2); background: var(--paper-2);
  border-left: 2px solid var(--accent); max-width: 60ch;
}
.hero-title {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 5.4vw, 3.4rem); line-height: 1.3; margin: 0 0 1.5rem;
}
html[lang="ja"] .hero-title { line-height: 1.5; }
.hero-lead { font-size: clamp(1rem, 1.5vw, 1.0625rem); color: var(--ink-2); max-width: 60ch; margin: 0 0 2.2rem; }

.page-title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 4vw, 2.6rem); line-height: 1.35; margin: 0 0 .8rem; }
.page-sub { color: var(--ink-3); font-size: .875rem; letter-spacing: .04em; margin: 0 0 1.5rem; }
.section-title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.4; margin: 0 0 1.4rem; }
.sub-title { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 600; margin: 0 0 .9rem; }
.eyebrow { margin: 0 0 1.2rem; font-size: .75rem; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); }
.eyebrow-chip { color: var(--chip); }
.crumbs { margin-bottom: 1.5rem; font-size: .8125rem; }
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }

.prose { max-width: 62ch; color: var(--ink-2); margin: 0 0 1.2rem; }
.prose-lead { font-size: 1.0625rem; margin-bottom: 2.2rem; }
.prose-emphasis {
  font-family: var(--font-display); font-size: 1.0625rem; line-height: 1.9;
  color: var(--ink); max-width: 58ch; border-left: 2px solid var(--accent); padding-left: 1.4rem;
}
.prose-emphasis-soft { font-size: 1.0625rem; color: var(--ink); max-width: 62ch; }
.micro { font-size: .78125rem; line-height: 1.7; color: var(--ink-3); max-width: 66ch; }
.conditional-note { margin: -.6rem 0 2rem; }
.disclaimer { margin-top: 1.6rem; }
.todo { color: var(--ink-3); font-style: italic; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-body); font-size: .9375rem; font-weight: 500;
  padding: .8rem 1.6rem; border-radius: 2px; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: all .16s ease;
}
.btn-primary { background: var(--accent); color: #FFF8F3; }
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink-3); }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ── Lists ──────────────────────────────────────────────── */

.steps { list-style: none; counter-reset: step; margin: 0 0 3rem; padding: 0;
  display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.steps li { counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block;
  font-family: var(--font-display); font-size: .8125rem; color: var(--accent);
  letter-spacing: .12em; margin-bottom: .7rem; }
.step-title { font-family: var(--font-display); font-size: 1.125rem; font-weight: 600; margin: 0 0 .5rem; }
.step-body { color: var(--ink-2); font-size: .9375rem; margin: 0; }

.receive { border-top: 1px solid var(--line); padding-top: 2.2rem; }
.ticks { list-style: none; margin: 0; padding: 0; max-width: 64ch; }
.ticks li { position: relative; padding-left: 1.5rem; margin-bottom: .7rem; color: var(--ink-2); font-size: .9375rem; }
.ticks li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

.points, .trust { list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1.75rem; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.points li, .trust li { border-left: 2px solid var(--accent); padding-left: 1.2rem; }
.trust { counter-reset: t; }
.trust li { counter-increment: t; }
.point-title { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 600; margin: 0 0 .45rem; }
.point-body { color: var(--ink-2); font-size: .9375rem; margin: 0; }

.not-list { margin: 0; }
.not-item { border-top: 1px solid var(--line); padding: 1.5rem 0; }
.not-item dt { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 600; margin-bottom: .5rem; }
.not-item dd { margin: 0; color: var(--ink-2); font-size: .9375rem; max-width: 62ch; }

.bullets { margin: 0; padding-left: 1.1rem; color: var(--ink-2); font-size: .9375rem; }
.bullets li { margin-bottom: .5rem; }
.bullets-accent li::marker { color: var(--accent); }

.two-col { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.col-card { background: var(--paper); border: 1px solid var(--line); border-radius: 2px; padding: 1.5rem; }
.col-card-accent { border-top: 3px solid var(--accent); }

.flow { list-style: none; margin: 0 0 1.5rem; padding: 0;
  display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.flow-n { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); display: block; margin-bottom: .4rem; }

.principles-row { list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.principles-row li {
  font-family: var(--font-display); font-size: 1rem; text-align: center;
  border: 1px solid var(--line); border-top: 3px solid var(--accent);
  border-radius: 2px; padding: 1.4rem 1rem; background: var(--paper);
}

.meta-list { margin: 2rem 0 0; }
.meta-list > div { display: grid; grid-template-columns: minmax(120px, 180px) 1fr; gap: 1rem;
  padding: .9rem 0; border-top: 1px solid var(--line); }
.meta-list dt { font-size: .8125rem; color: var(--ink-3); }
.meta-list dd { margin: 0; font-size: .9375rem; color: var(--ink-2); }
.meta-list a { color: var(--accent); }
@media (max-width: 560px) { .meta-list > div { grid-template-columns: 1fr; gap: .2rem; } }

/* ── Map ────────────────────────────────────────────────── */

.map-figure { margin: 0 0 3rem; }
.map-figure-single { margin-bottom: 3.5rem; }
.route-map { width: 100%; height: auto; display: block; max-width: 880px; margin: 0 auto; }
.map-note { margin-top: .8rem; font-size: .78125rem; color: var(--ink-3); text-align: center; }

.land { fill: var(--land); stroke: var(--land-line); stroke-width: .7; }

.route-path {
  fill: none; stroke: var(--chip); stroke-width: 1.3;
  stroke-linejoin: round; stroke-linecap: round; opacity: .5;
}
.torii path {
  fill: none; stroke: var(--chip); stroke-width: 1.7;
  stroke-linecap: round; opacity: .95;
}
.route.is-dim { opacity: .16; }
.route.is-on .route-path { opacity: .95; stroke-width: 2; }
.route.is-on .torii path { stroke-width: 1.8; }

.map-num {
  fill: var(--chip); font-family: var(--font-display); font-size: 10px;
  letter-spacing: .04em;
  paint-order: stroke; stroke: var(--paper); stroke-width: 2.5px; stroke-linejoin: round;
}
.torii { cursor: default; }

/* ── Route cards & site list ────────────────────────────── */

.route-cards { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); margin-bottom: 2rem; }
.route-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: .4rem;
  text-decoration: none; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-top: 3px solid var(--chip);
  border-radius: 2px; padding: 1.4rem; transition: box-shadow .16s, transform .16s;
}
.route-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-hist { font-size: .6875rem; letter-spacing: .1em; text-transform: uppercase; color: var(--chip); }
.card-name { font-family: var(--font-display); font-weight: 600; font-size: 1.125rem; line-height: 1.45; margin: 0; }
.card-meta { font-size: .75rem; color: var(--ink-3); margin: 0; letter-spacing: .03em; }
.card-lead { font-size: .875rem; color: var(--ink-2); margin: .4rem 0 .8rem; }
.card-cta { margin-top: auto; font-size: .8125rem; color: var(--chip); border-bottom: 1px solid currentColor; }

.site-list { list-style: none; margin: 0; padding: 0; }
.site-item { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 0 1.25rem;
  padding: 1.3rem 0; border-top: 1px solid var(--line-soft); }
.site-item:first-child { border-top: 0; }
.site-index { font-family: var(--font-display); font-size: .8125rem; color: var(--chip); padding-top: .2rem; letter-spacing: .05em; }
.site-name { font-family: var(--font-display); font-size: 1.0625rem; margin: 0 0 .25rem; font-weight: 600; }
.site-kana { font-family: var(--font-body); font-size: .75rem; color: var(--ink-3); font-weight: 400; margin-left: .6rem; }
.site-meta { font-size: .75rem; color: var(--ink-3); margin: 0 0 .5rem; letter-spacing: .03em; }
.site-role { display: inline-block; font-size: .6875rem; letter-spacing: .06em; color: var(--chip);
  border: 1px solid currentColor; border-radius: 999px; padding: 0 .55rem; margin-right: .6rem; vertical-align: 1px; }
.site-legend { font-size: .9375rem; color: var(--ink-2); margin: 0; max-width: 68ch; }

/* ── Survey form ────────────────────────────────────────── */

.form { max-width: 620px; }
.q { border: 0; border-top: 1px solid var(--line); margin: 0 0 1.75rem; padding: 1.5rem 0 0; }
.q-legend { font-family: var(--font-display); font-size: 1rem; padding: 0; margin-bottom: .9rem; }
.opt { display: block; margin-bottom: .45rem; cursor: pointer; }
.opt input { position: absolute; opacity: 0; width: 0; height: 0; }
.opt span {
  display: block; border: 1px solid var(--line); border-radius: 2px;
  padding: .55rem .9rem; font-size: .9375rem; color: var(--ink-2);
  background: var(--paper); transition: all .14s;
}
.opt:hover span { border-color: var(--ink-3); }
.opt input:checked + span { border-color: var(--accent); color: var(--ink); box-shadow: inset 3px 0 0 var(--accent); }
.opt input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.field { display: block; margin-bottom: 1.5rem; }
.field-label { display: flex; align-items: baseline; gap: .5rem; font-size: .875rem; color: var(--ink); margin-bottom: .45rem; }
.field-optional { font-size: .6875rem; color: var(--ink-3); }
.field-note { display: block; font-size: .75rem; color: var(--ink-3); margin-top: .4rem; }
.field input, .field textarea {
  width: 100%; font-family: var(--font-body); font-size: .9375rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: 2px;
  padding: .65rem .8rem; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); outline: none; }
.hp { position: absolute; left: -9999px; }
.form-status { font-size: .9375rem; margin: 1rem 0 0; min-height: 1.4em; color: var(--accent); }

/* ── Thank-you page ─────────────────────────────────────── */

.thanks .eyebrow { font-family: var(--font-display); font-size: 2rem; letter-spacing: 0; margin-bottom: .5rem; }
.next-links { list-style: none; margin: 0; padding: 0; }
.next-links li { border-top: 1px solid var(--line); }
.next-links a {
  display: block; padding: 1.1rem 0; color: var(--ink); text-decoration: none;
  font-family: var(--font-display); font-size: 1.0625rem;
}
.next-links a::after { content: " →"; color: var(--accent); }
.next-links a:hover { color: var(--accent); }