/* =============================================================
   旅遊聯盟行銷網站 - 共用樣式 (日本版 MVP)
   色調：和風・現代・極簡
   ============================================================= */

:root {
  --color-bg: #FAF7F2;
  --color-bg-alt: #F1EBE2;
  --color-ink: #1F1D1A;
  --color-ink-soft: #5A564F;
  --color-accent: #C8385A;     /* 朱色 - CTA */
  --color-accent-dark: #9C2744;
  --color-indigo: #2E3A59;
  --color-line: #E4DDD0;
  --color-gold: #B48A3C;

  --font-sans: "Noto Sans TC", "Noto Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Noto Serif TC", "Noto Serif", Georgia, serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(31,29,26,.06), 0 2px 8px rgba(31,29,26,.05);
  --shadow-md: 0 4px 16px rgba(31,29,26,.08), 0 8px 32px rgba(31,29,26,.06);

  --container: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover { color: var(--color-accent-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: .01em;
  line-height: 1.3;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--color-ink-soft); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250,247,242,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.site-logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.site-logo::before {
  content: "";
  width: 22px; height: 22px;
  display: inline-block;
  background: radial-gradient(circle, var(--color-accent) 40%, transparent 41%);
}
.nav-menu {
  display: flex;
  gap: 28px;
  align-items: center;
  margin: 0; padding: 0;
  list-style: none;
}
.nav-menu a {
  color: var(--color-ink);
  font-size: .95rem;
  font-weight: 500;
}
.nav-menu a:hover { color: var(--color-accent); }
.nav-lang {
  border-left: 1px solid var(--color-line);
  padding-left: 20px;
  font-size: .85rem;
  color: var(--color-ink-soft);
}
.nav-lang a { color: var(--color-ink-soft); margin: 0 4px; }
.nav-lang a.active { color: var(--color-accent); font-weight: 600; }
.nav-toggle {
  display: none;
  background: none; border: none;
  font-size: 1.5rem; cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 80px 0 100px;
  background:
    radial-gradient(1200px 400px at 80% 0%, rgba(200,56,90,.12), transparent 60%),
    radial-gradient(900px 380px at 10% 100%, rgba(46,58,89,.10), transparent 60%),
    var(--color-bg);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 120px;
  background:
    linear-gradient(180deg, transparent, var(--color-bg-alt));
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.hero-kicker {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
  font-weight: 600;
}
.hero h1 { margin-bottom: 18px; }
.hero p.lead {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  max-width: 52ch;
  margin-bottom: 28px;
}
.hero-cta {
  display: flex; flex-wrap: wrap; gap: 14px;
}
.hero-illustration {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, #F7C9D1 0%, #FADEC8 45%, #CFD9EE 100%);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.hero-illustration svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(200,56,90,.35);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.btn-ghost:hover { background: var(--color-ink); color: #fff; }

/* ---------- Sections ---------- */
section { padding: 80px 0; }
.section-title {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-title .eyebrow {
  font-size: .8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
}
.section-title h2 { margin-top: 10px; }

/* ---------- Category grid ---------- */
.bg-alt { background: var(--color-bg-alt); }
.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.category-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-line);
  transition: transform .2s ease, box-shadow .2s ease;
  display: flex; flex-direction: column;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.category-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(200,56,90,.12), rgba(46,58,89,.08));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 18px;
}
.category-card h3 { margin-bottom: 10px; }
.category-card p { flex: 1; font-size: .95rem; }
.category-card .btn { align-self: flex-start; margin-top: 8px; padding: 10px 18px; font-size: .9rem; }

/* ---------- Article grid ---------- */
.articles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.article-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
  display: flex; flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.article-thumb {
  aspect-ratio: 16/10;
  background-size: cover;
  background-position: center;
}
.thumb-tokyo    { background: #2a2038 url("../img/cover-tokyo.jpg") center/cover no-repeat; }
.thumb-jrpass   { background: #d8c9ad url("../img/cover-jrpass.jpg") center/cover no-repeat; }
.thumb-essential{ background: #e8d6b5 url("../img/cover-essentials.jpg") center/cover no-repeat; }
.thumb-osaka    { background: linear-gradient(135deg,#9C2744 0%,#E36A4A 55%,#FBD5A5 100%); }
.thumb-kyoto    { background: linear-gradient(135deg,#2F5E3F 0%,#8FBE86 55%,#E4F1D3 100%); }
.thumb-hokkaido { background: linear-gradient(135deg,#4A6FA5 0%,#A9C8E4 55%,#F3F8FC 100%); }

.article-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.article-tag {
  display: inline-block;
  font-size: .75rem; letter-spacing: .15em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 600; margin-bottom: 10px;
}
.article-body h3 {
  font-size: 1.15rem; line-height: 1.4; margin-bottom: 10px;
}
.article-body p { font-size: .92rem; flex: 1; }
.article-meta {
  display: flex; justify-content: space-between;
  font-size: .8rem; color: var(--color-ink-soft);
  padding-top: 14px; border-top: 1px solid var(--color-line);
  margin-top: 16px;
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-indigo) 0%, #4A5A82 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: -50% -30% auto auto;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(200,56,90,.45), transparent 70%);
}
.cta-banner h2, .cta-banner p { color: #fff; position: relative; }
.cta-banner p { opacity: .85; max-width: 56ch; margin: 0 auto 24px; }
.cta-banner .btn-primary { position: relative; }

/* ---------- Article page ---------- */
.article-cover {
  width: 100%;
  height: clamp(240px, 38vw, 440px);
  object-fit: cover;
  display: block;
  background: var(--color-bg-alt);
}
.article-hero {
  padding: 60px 0 40px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-line);
}
.article-hero .breadcrumb {
  font-size: .85rem; color: var(--color-ink-soft); margin-bottom: 16px;
}
.article-hero .breadcrumb a { color: var(--color-ink-soft); }
.article-hero h1 { max-width: 22ch; }
.article-hero .meta {
  font-size: .9rem; color: var(--color-ink-soft); margin-top: 14px;
}

.article-content {
  max-width: 920px;
  margin: 0 auto;
  padding: 60px 28px 80px;
  font-size: 1.05rem;
}
.article-content > p,
.article-content > ul,
.article-content > ol,
.article-content > blockquote,
.article-content > h2,
.article-content > h3,
.article-content > h4 {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.article-content > h2 { max-width: 760px; }
.article-content .tldr,
.article-content .callout,
.article-content .aff-box,
.article-content .disclosure {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}
.article-content > table { max-width: 820px; margin-left: auto; margin-right: auto; }
.article-content .section-img {
  width: calc(100% + 40px);
  margin: 40px -20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(46,58,89,0.08);
}
.article-content .section-img img { width: 100%; height: auto; display: block; }
.article-content .section-img figcaption {
  text-align: center;
  font-size: .82rem;
  color: var(--color-ink-soft);
  margin-top: 10px;
  letter-spacing: .03em;
}
.article-content .section-img.wide {
  width: 100%;
  max-width: 920px;
  margin: 48px auto;
}
@media (max-width: 960px) {
  .article-content .section-img,
  .article-content .section-img.wide {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }
}
.article-content h2 {
  margin-top: 2.2em;
  padding-top: .4em;
  border-top: 2px solid var(--color-line);
}
.article-content h3 { margin-top: 1.8em; }
.article-content p { color: var(--color-ink); }
.article-content ul, .article-content ol { padding-left: 1.4em; }
.article-content li { margin-bottom: .5em; color: var(--color-ink); }
.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  margin: 1.5em 0;
  padding: .4em 0 .4em 1.2em;
  color: var(--color-ink-soft);
  font-style: italic;
}
.article-content table {
  width: 100%; border-collapse: collapse; margin: 1.5em 0;
  font-size: .95rem;
}
.article-content th, .article-content td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
}
.article-content th {
  background: var(--color-bg-alt);
  font-weight: 600;
}

/* TL;DR summary at top of article */
.tldr {
  background: linear-gradient(135deg, #FFF8EF 0%, #FBEDD8 100%);
  border: 1px solid #EED9B4;
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0 36px;
  font-size: .95rem;
}
.tldr .tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 700;
  margin-bottom: 10px;
}
.tldr ul { margin: 0; padding-left: 1.2em; }
.tldr li { margin-bottom: .35em; color: var(--color-ink); }

/* Pro tip / pitfall / note callouts */
.callout {
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 24px 0;
  font-size: .95rem;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.callout .ico {
  font-size: 1.25rem;
  line-height: 1.2;
  flex-shrink: 0;
  margin-top: 1px;
}
.callout p { margin: 0; color: var(--color-ink); }
.callout strong { color: var(--color-ink); }
.callout.pro     { background: #F0F7EF; border-left: 4px solid #5B8A4A; }
.callout.pitfall { background: #FCF2E9; border-left: 4px solid #D4804A; }
.callout.note    { background: #EFF2F7; border-left: 4px solid #4A6FA5; }

/* Visualization figure (SVG illustrations inside articles) */
.figure {
  margin: 44px auto;
  max-width: 820px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px 24px 20px;
  text-align: center;
}
.figure svg { max-width: 100%; height: auto; display: block; margin: 0 auto; }
.figure figcaption {
  font-size: .82rem;
  color: var(--color-ink-soft);
  margin-top: 14px;
  letter-spacing: .02em;
}

/* Pick card — recommended restaurant/hotel/shop */
.picks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px auto;
  max-width: 820px;
}
.pick {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
}
.pick .nm {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--color-ink);
  margin-bottom: 2px;
  display: block;
}
.pick .sub {
  font-size: .78rem;
  color: var(--color-ink-soft);
  margin-bottom: 8px;
  letter-spacing: .04em;
}
.pick p { margin: 0 0 8px; font-size: .88rem; }
.pick .det {
  font-size: .78rem;
  color: var(--color-ink-soft);
  padding-top: 8px;
  border-top: 1px dashed var(--color-line);
}
a.map-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dotted var(--color-accent);
  padding-bottom: 1px;
  transition: color .15s;
}
a.map-link:hover {
  color: #8F2242;
  border-bottom-color: #8F2242;
}
a.map-link::before {
  content: "📍";
  margin-right: 4px;
  font-size: .9em;
}
@media (max-width: 640px) {
  .picks { grid-template-columns: 1fr; }
  .figure { margin-left: 0; margin-right: 0; }
}

/* Inline affiliate box */
.aff-box {
  background: #fff;
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}
.aff-box .tag {
  font-size: .7rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--color-gold); font-weight: 700; margin-bottom: 6px;
}
.aff-box h4 { margin: 0 0 8px; font-family: var(--font-sans); font-size: 1.05rem; }
.aff-box p { margin: 0 0 12px; font-size: .92rem; }
.aff-box .btn { padding: 10px 20px; font-size: .88rem; }

.disclosure {
  background: var(--color-bg-alt);
  border: 1px dashed var(--color-line);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  color: var(--color-ink-soft);
  margin: 32px 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: #C8C3B9;
  padding: 60px 0 28px;
  margin-top: 0;
}
.site-footer a { color: #E5DFD2; }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-grid h4 {
  color: #fff; font-size: .95rem;
  font-family: var(--font-sans);
  margin-bottom: 14px; letter-spacing: .08em;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; font-size: .9rem; }
.footer-brand p { color: #A8A298; font-size: .9rem; max-width: 36ch; }
.footer-bottom {
  border-top: 1px solid #3A362F;
  padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: .82rem; color: #8D8781;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { padding: 56px 0 70px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-illustration { max-width: 420px; margin: 0 auto; }
  section { padding: 60px 0; }
  .categories, .articles { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .cta-banner { padding: 40px 24px; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column; align-items: flex-start;
    padding: 20px;
    display: none;
  }
  .nav-menu.is-open { display: flex; }
  .nav-lang { border: none; padding: 0; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .btn { padding: 12px 22px; }
}