/* ==========================================================================
   Japan The Best — japanthebest.com
   Sister site to thepmi.net (Japan Business Insider)
   Single stylesheet. No build step. FTP-ready.
   ========================================================================== */

/* --- 1. Tokens ---------------------------------------------------------- */
:root {
  /* Ink */
  --ink:        #16181d;
  --ink-mid:    #3d434f;
  --ink-soft:   #6b7280;
  --ink-faint:  #9aa1ad;

  /* Paper — warmer than thepmi.net, same family */
  --paper:      #faf8f4;
  --paper-alt:  #f2ede3;
  --paper-deep: #1a1d24;

  /* Accents */
  --ai:         #1b3a5c;  /* 藍 — indigo, the structural accent */
  --ai-light:   #2f5b86;
  --shu:        #c8442e;  /* 朱 — vermillion, used sparingly */
  --gold:       #a8894a;  /* 金 — rules, numerals */

  --line:       rgba(22, 24, 29, 0.12);
  --line-soft:  rgba(22, 24, 29, 0.06);
  --line-invert:rgba(250, 248, 244, 0.16);

  /* Type */
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Times New Roman", "Georgia", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
           "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", Arial, sans-serif;

  /* Rhythm */
  --gut:   clamp(1.25rem, 4vw, 2.5rem);
  --sect:  clamp(4rem, 10vw, 8rem);
  --max:   1180px;
  --measure: 68ch;
}

/* --- 2. Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--ai); text-decoration: none; }
a:hover { color: var(--shu); }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ai); outline-offset: 3px; border-radius: 2px;
}
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.24; margin: 0 0 .6em; letter-spacing: .005em; }
p  { margin: 0 0 1.15em; }
ul, ol { margin: 0 0 1.15em; padding-left: 1.35em; }
li { margin-bottom: .4em; }
hr { border: 0; border-top: 1px solid var(--line); margin: var(--gut) 0; }
strong { font-weight: 600; }
small { font-size: .84rem; }

/* --- 3. Layout ---------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); }
.wrap--narrow { max-width: 760px; }
.section { padding-block: var(--sect); }
.section--alt { background: var(--paper-alt); }
.section--dark { background: var(--paper-deep); color: var(--paper); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--paper); }
.section--dark a { color: #9dc4e8; }
.section--dark .eyebrow { color: var(--gold); }
.section--tight { padding-block: clamp(2.5rem, 6vw, 4rem); }

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper);
  padding: .75rem 1.25rem; z-index: 999;
}
.skip:focus { left: 0; }

/* --- 4. Typographic devices (shared with thepmi.net vocabulary) ---------- */
.eyebrow {
  font-family: var(--sans);
  font-size: .7rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 1.25rem;
  display: flex; align-items: center; gap: .75rem;
}
.eyebrow::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.display  { font-size: clamp(2.4rem, 6.5vw, 4.4rem); letter-spacing: -.015em; }
.h-lg     { font-size: clamp(1.9rem, 4.2vw, 3rem); }
.h-md     { font-size: clamp(1.4rem, 2.6vw, 2rem); }
.h-sm     { font-size: clamp(1.12rem, 1.8vw, 1.35rem); }

.lede { font-size: clamp(1.06rem, 1.7vw, 1.26rem); color: var(--ink-mid); max-width: var(--measure); line-height: 1.72; }
.prose { max-width: var(--measure); }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; font-size: 1.22rem; }
.prose img { margin: 2rem 0; border-radius: 3px; }
.muted { color: var(--ink-soft); }
.centre { text-align: center; }

/* Vertical kanji flourish — the thepmi.net signature */
.kanji-mark {
  font-family: var(--serif);
  writing-mode: vertical-rl;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  letter-spacing: .5em;
  color: var(--gold);
  opacity: .55;
  line-height: 1;
  user-select: none;
}
.kanji-inline {
  font-family: var(--serif);
  color: var(--gold);
  letter-spacing: .35em;
  font-size: .95rem;
}

/* Numbered section markers: 01 —, and 一 二 三 */
.num {
  font-family: var(--serif);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--gold);
  display: block;
  margin-bottom: .9rem;
}
.numeral {
  font-family: var(--serif);
  font-size: 1.7rem;
  color: var(--gold);
  line-height: 1;
  display: block;
  margin-bottom: .9rem;
}

/* --- 5. Header ---------------------------------------------------------- */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-head__inner {
  display: flex; align-items: center; gap: 1.25rem;
  min-height: 68px;
  max-width: var(--max); margin-inline: auto; padding-inline: var(--gut);
}
.brand { display: flex; align-items: baseline; gap: .7rem; font-family: var(--serif); font-size: 1.06rem; color: var(--ink); letter-spacing: .01em; white-space: nowrap; }
.brand:hover { color: var(--ink); }
.brand__mark { color: var(--shu); font-size: 1.15rem; letter-spacing: .1em; }
.brand__tag { font-family: var(--sans); font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-faint); }

.nav { margin-left: auto; display: flex; align-items: center; gap: 1.6rem; }
.nav a { font-size: .845rem; color: var(--ink-mid); letter-spacing: .01em; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--shu); }
.nav__lang { font-size: .72rem; letter-spacing: .12em; color: var(--ink-faint); display: flex; gap: .4rem; padding-left: 1.1rem; border-left: 1px solid var(--line); }
.nav__lang a { font-size: .72rem; letter-spacing: .12em; }
.nav__lang [aria-current] { color: var(--ink); font-weight: 600; }

.nav-toggle {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line);
  border-radius: 2px; padding: .5rem .8rem; font-family: var(--sans); font-size: .72rem;
  letter-spacing: .16em; text-transform: uppercase; color: var(--ink-mid); cursor: pointer;
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; inset: 68px 0 auto; flex-direction: column;
    align-items: flex-start; gap: 0; background: var(--paper);
    border-bottom: 1px solid var(--line); padding: .5rem var(--gut) 1.5rem;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: .7rem 0; font-size: .98rem; width: 100%; border-bottom: 1px solid var(--line-soft); }
  .nav__lang { border-left: 0; padding-left: 0; padding-top: 1rem; }
}

/* --- 6. Hero ------------------------------------------------------------ */
.hero { padding-block: clamp(3.5rem, 9vw, 7rem) clamp(3rem, 7vw, 5.5rem); position: relative; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--gut); align-items: start; }
.hero__title { margin-bottom: .5em; }
.hero__title .accent { color: var(--shu); }
.hero__jp {
  font-family: var(--serif); font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  letter-spacing: .55em; color: var(--gold); margin-bottom: 1.4rem; display: block;
}
.hero__badge {
  font-family: var(--serif); font-size: .82rem; line-height: 1.55; color: var(--ink-soft);
  text-align: right; border-left: 1px solid var(--line); padding-left: 1.25rem;
}
@media (max-width: 760px) { .hero__grid { grid-template-columns: 1fr; } .hero__badge { display: none; } }

/* Scrolling signal ticker */
.ticker {
  border-block: 1px solid var(--line); background: var(--paper-alt);
  overflow: hidden; padding-block: .85rem;
}
.ticker__track {
  display: flex; gap: 2.5rem; white-space: nowrap; width: max-content;
  animation: ticker 42s linear infinite;
}
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker span { font-size: .8rem; letter-spacing: .06em; color: var(--ink-mid); display: inline-flex; align-items: center; gap: .7rem; }
.ticker span::before { content: "●"; color: var(--shu); font-size: .5rem; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .ticker__track { animation: none; flex-wrap: wrap; white-space: normal; width: 100%; }
}

/* --- 7. Buttons --------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--sans); font-size: .82rem; letter-spacing: .12em; text-transform: uppercase;
  padding: .95rem 1.7rem; border: 1px solid var(--ink); border-radius: 2px;
  background: var(--ink); color: var(--paper); cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { background: var(--shu); border-color: var(--shu); color: #fff; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--invert { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--invert:hover { background: var(--shu); border-color: var(--shu); color: #fff; }
.btn--lg { padding: 1.15rem 2.2rem; font-size: .86rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }

/* --- 8. Cards & grids --------------------------------------------------- */
.grid { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(265px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card { border-top: 1px solid var(--ink); padding-top: 1.5rem; }
.card h3 { margin-bottom: .5em; }
.card p:last-child { margin-bottom: 0; }
.card ul { font-size: .93rem; color: var(--ink-mid); padding-left: 1.1em; margin-top: 1rem; }

.card--box {
  border: 1px solid var(--line); border-top-width: 3px; border-top-color: var(--ai);
  background: #fff; padding: clamp(1.5rem, 3vw, 2.1rem); border-radius: 3px;
}
.card--pay { border-top-color: var(--shu); }

/* Stat blocks */
.stat { border-top: 1px solid var(--line); padding-top: 1.2rem; }
.stat__fig { font-family: var(--serif); font-size: clamp(2.2rem, 5vw, 3.2rem); line-height: 1; color: var(--ai); display: block; margin-bottom: .5rem; }
.section--dark .stat { border-top-color: var(--line-invert); }
.section--dark .stat__fig { color: var(--gold); }
.stat__label { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-soft); display: block; margin-bottom: .6rem; }
.section--dark .stat__label { color: var(--ink-faint); }
.stat p { font-size: .9rem; color: var(--ink-mid); margin: 0; }
.section--dark .stat p { color: rgba(250,248,244,.72); }

/* Two-column split with sticky side */
.split { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.split__side { position: sticky; top: 100px; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split__side { position: static; } }

/* Pull quote */
.quote {
  border-left: 2px solid var(--shu); padding-left: clamp(1.25rem, 3vw, 2rem);
  font-family: var(--serif); font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.55; color: var(--ink); max-width: 34ch; margin: 0;
}
.quote cite { display: block; font-family: var(--sans); font-size: .78rem; font-style: normal; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); margin-top: 1.2rem; }

/* Process steps */
.steps { counter-reset: step; display: grid; gap: 1.75rem; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }
.step { border-top: 1px solid var(--line); padding-top: 1.25rem; }
.step__n { font-family: var(--serif); font-size: .78rem; letter-spacing: .18em; color: var(--gold); display: block; margin-bottom: .7rem; }
.step h3 { font-size: 1.06rem; }
.step p { font-size: .93rem; color: var(--ink-mid); margin: 0; }

/* --- 9. Journal --------------------------------------------------------- */
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { border-bottom: 1px solid var(--line); margin: 0; }
.post-link { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 1.5rem; align-items: baseline; padding: clamp(1.5rem, 3vw, 2.1rem) 0; color: var(--ink); }
.post-link:hover { color: var(--ink); }
.post-link:hover .post-link__title { color: var(--shu); }
.post-link__title { font-family: var(--serif); font-size: clamp(1.2rem, 2.4vw, 1.6rem); line-height: 1.3; margin: 0 0 .5rem; transition: color .18s ease; }
.post-link__meta { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); white-space: nowrap; }
.post-link p { font-size: .95rem; color: var(--ink-mid); margin: 0; max-width: 62ch; }
@media (max-width: 640px) { .post-link { grid-template-columns: 1fr; gap: .5rem; } }

.article-head { border-bottom: 1px solid var(--line); padding-bottom: clamp(2rem, 4vw, 3rem); margin-bottom: clamp(2rem, 4vw, 3rem); }
.article-meta { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 1.5rem; }
.article-foot { border-top: 1px solid var(--line); margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: clamp(2rem, 4vw, 3rem); }

.crumb { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 1.75rem; }
.crumb a { color: var(--ink-soft); }
.crumb a:hover { color: var(--shu); }

/* Callout — used for cross-links to thepmi.net */
.callout {
  border: 1px solid var(--line); border-left: 3px solid var(--ai);
  background: var(--paper-alt); padding: clamp(1.3rem, 3vw, 1.9rem);
  border-radius: 3px; margin: 2.5rem 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout__label { font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ai); display: block; margin-bottom: .8rem; font-weight: 600; }

/* Data table */
.table-scroll { overflow-x: auto; margin: 2rem 0; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--sans); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); border-bottom-color: var(--ink); font-weight: 600; }
tbody tr:hover { background: var(--paper-alt); }

/* --- 10. Forms ---------------------------------------------------------- */
.form { margin-top: 2.5rem; }
.field { margin-bottom: 1.6rem; }
.field label,
.field .label { display: block; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-mid); margin-bottom: .55rem; font-weight: 600; }
.field .label + .hint { display: block; font-size: .84rem; letter-spacing: 0; text-transform: none; color: var(--ink-soft); font-weight: 400; margin: 0 0 .8rem; }
.field .req { color: var(--shu); }
.field .hint { display: block; font-size: .84rem; letter-spacing: 0; text-transform: none; color: var(--ink-soft); font-weight: 400; margin-top: .3rem; }
.field input[type="text"], .field input[type="email"], .field input[type="url"],
.field select, .field textarea {
  width: 100%; font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: 2px;
  padding: .8rem .95rem; transition: border-color .18s ease;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ai); }
.field textarea { min-height: 140px; resize: vertical; line-height: 1.65; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

.check-grid { display: grid; gap: .65rem; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }
.check {
  display: flex; align-items: flex-start; gap: .7rem; font-size: .95rem;
  border: 1px solid var(--line); border-radius: 2px; padding: .8rem .95rem;
  background: #fff; cursor: pointer; transition: border-color .18s ease;
  letter-spacing: 0; text-transform: none; font-weight: 400; color: var(--ink); margin: 0;
}
.check:hover { border-color: var(--ai); }
.check input { margin: .35rem 0 0; accent-color: var(--ai); flex-shrink: 0; }

.field-row { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }

/* Honeypot — must stay invisible to humans, visible to bots */
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

.form-note { font-size: .86rem; color: var(--ink-soft); max-width: 56ch; }

/* --- 11. FAQ ------------------------------------------------------------ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.35rem 2.5rem 1.35rem 0; position: relative;
  font-family: var(--serif); font-size: clamp(1.02rem, 1.9vw, 1.18rem); line-height: 1.45;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "＋"; position: absolute; right: .25rem; top: 1.35rem;
  color: var(--gold); font-size: 1rem; transition: transform .2s ease;
}
.faq details[open] summary::after { content: "－"; }
.faq details > *:not(summary) { margin-bottom: 1.35rem; color: var(--ink-mid); font-size: .96rem; max-width: var(--measure); }

/* --- 12. Footer --------------------------------------------------------- */
.site-foot { background: var(--paper-deep); color: rgba(250,248,244,.78); padding-block: clamp(3rem, 7vw, 5rem) 2rem; font-size: .9rem; }
.site-foot a { color: rgba(250,248,244,.78); }
.site-foot a:hover { color: var(--shu); }
.site-foot h4 { font-family: var(--sans); font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin: 0 0 1.1rem; font-weight: 600; }
.site-foot__grid { display: grid; gap: 2.5rem; grid-template-columns: minmax(0, 1.6fr) repeat(auto-fit, minmax(150px, 1fr)); }
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: .55rem; font-size: .88rem; }
.site-foot__brand { font-family: var(--serif); font-size: 1.1rem; color: var(--paper); display: block; margin-bottom: .9rem; }
.site-foot__bar {
  border-top: 1px solid var(--line-invert); margin-top: 3rem; padding-top: 1.5rem;
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  font-size: .78rem; color: rgba(250,248,244,.5);
}
.site-foot__sister { border: 1px solid var(--line-invert); border-radius: 3px; padding: 1.1rem 1.25rem; margin-top: 1.5rem; font-size: .85rem; line-height: 1.6; }
.site-foot__sister a { color: #9dc4e8; text-decoration: underline; text-underline-offset: 3px; }

/* --- 13. Utility -------------------------------------------------------- */
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.tag {
  display: inline-block; font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 100px; padding: .3rem .85rem; color: var(--ink-soft);
  margin: 0 .35rem .5rem 0;
}
.tag--paid { border-color: var(--shu); color: var(--shu); }
.tag--free { border-color: var(--ai); color: var(--ai); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* --- 14. Japanese locale adjustments ------------------------------------ */
html[lang="ja"] body { font-size: 16px; line-height: 1.9; letter-spacing: .015em; }
html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3 { line-height: 1.42; letter-spacing: .01em; }
html[lang="ja"] .display { font-size: clamp(1.9rem, 5vw, 3.3rem); }
html[lang="ja"] .h-lg { font-size: clamp(1.55rem, 3.6vw, 2.4rem); }
html[lang="ja"] .eyebrow { letter-spacing: .18em; }
html[lang="ja"] .btn { letter-spacing: .08em; text-transform: none; font-size: .88rem; }
html[lang="ja"] .field label { letter-spacing: .06em; text-transform: none; }
html[lang="ja"] .quote { max-width: 24em; }
html[lang="ja"] .prose { max-width: 40em; }

/* --- 15. Print ---------------------------------------------------------- */
@media print {
  .site-head, .site-foot, .ticker, .btn-row, .nav-toggle { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .section { padding-block: 1rem; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #555; }
}