/* ============================================================
   上陸ノート — 青磁の記録帳
   色を変えたいときは :root の6色（とダークモード用の6色）だけを書き換える
   ============================================================ */

:root {
  --paper: #f5f3ed;        /* 白磁：背景 */
  --ink: #1e2826;          /* 墨：本文 */
  --celadon: #b7cfc2;      /* 青磁（淡）：帯・到達マス */
  --celadon-deep: #46705f; /* 青磁（深）：リンク・強調 */
  --seal: #b4432a;         /* 朱：上陸の判子だけに使う */
  --on-accent: #f5f3ed;    /* 青磁（深）の上に乗る文字 */

  --ink-soft: color-mix(in srgb, var(--ink) 72%, var(--paper));
  --ink-faint: color-mix(in srgb, var(--ink) 42%, var(--paper));
  --line: color-mix(in srgb, var(--ink) 15%, var(--paper));
  --line-strong: color-mix(in srgb, var(--ink) 80%, var(--paper));
  --tint: color-mix(in srgb, var(--celadon) 30%, var(--paper));
  --surface: var(--paper);

  --serif: "Shippori Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;

  --gutter: clamp(16px, 4vw, 40px);
  --measure: 38rem;
  --wide: 72rem;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #141917;
    --ink: #e4e6e0;
    --celadon: #3e5a4f;
    --celadon-deep: #93baa8;
    --seal: #e07a5f;
    --on-accent: #141917;
    --tint: color-mix(in srgb, var(--celadon) 38%, var(--paper));
  }
}

/* ---------- 基本 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.9;
  letter-spacing: 0.02em;
  font-feature-settings: "palt" 0;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin: 0;
}

p { margin: 0; }

a { color: var(--celadon-deep); text-underline-offset: 0.25em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--celadon-deep); outline-offset: 3px; }

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

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.wrap { width: 100%; max-width: calc(var(--wide) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: calc(var(--measure) + var(--gutter) * 2); }

.num { font-variant-numeric: tabular-nums; }

/* ---------- 広告表記の帯（全ページ） ---------- */
.pr-band {
  background: var(--tint);
  color: var(--ink-soft);
  font-size: 0.875rem;
  line-height: 1.6;
  text-align: center;
  padding: 0.5rem var(--gutter);
}

/* ---------- ヘッダー ---------- */
.site-head { border-bottom: 1px solid var(--line); }
.site-head__inner {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 0.5rem 1.5rem; padding-block: 1.125rem;
}
.logo { color: var(--ink); text-decoration: none; display: flex; align-items: baseline; gap: 0.75rem; }
.logo__name { font-family: var(--serif); font-weight: 700; font-size: 1.375rem; letter-spacing: 0.12em; }
.logo__sub { font-size: 0.8125rem; color: var(--ink-soft); letter-spacing: 0.1em; }
.site-nav { display: flex; gap: 1.25rem; font-size: 0.9375rem; }
.site-nav a { color: var(--ink); text-decoration: none; padding-block: 0.25rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--celadon-deep); text-decoration-thickness: 2px; }

@media (max-width: 420px) {
  .logo__sub { display: none; }
}

/* ---------- 見出しまわりの小物 ---------- */
.eyebrow {
  font-size: 0.8125rem; letter-spacing: 0.16em; color: var(--celadon-deep);
  display: flex; flex-wrap: wrap; gap: 0 1em;
}
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 2rem; margin-bottom: 1.75rem; }
.section-head h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); }
.section-head__meta { font-size: 0.9375rem; color: var(--ink-soft); line-height: 1.7; }
.more { font-size: 0.9375rem; white-space: nowrap; }

/* ---------- トップ：ヒーロー ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem clamp(1.5rem, 6vw, 6rem);
  align-items: end;
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2.5rem, 6vw, 4.5rem);
  max-width: calc(60rem + var(--gutter) * 2);
}
.hero__title {
  grid-column: 2; grid-row: 1;
  writing-mode: vertical-rl;
  font-size: clamp(2rem, 1.3rem + 3.6vw, 3.25rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.14em;
  position: relative;
}
.hero__title .hanko {
  /* 縦書き見出しの終わりに押す小さな印 */
  display: inline-grid; place-items: center;
  writing-mode: horizontal-tb;
  width: 1.1em; height: 1.1em; margin-block-start: 0.35em;
  border: 1.5px solid var(--seal); color: var(--seal);
  font-size: 0.42em; line-height: 1; letter-spacing: 0;
  vertical-align: middle;
}
.hero__body { grid-column: 1; grid-row: 1; display: grid; gap: 1.5rem; max-width: 30rem; }
.hero__lead { font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem); line-height: 2; }

/* ---------- 上陸ステップ（サイトの目玉） ---------- */
.route {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
}
.route__stop { position: relative; padding-top: 2.75rem; padding-right: 0.5rem; min-width: 0; line-height: 1.5; }
.route__node {
  position: absolute; top: calc(1.25rem - 0.4375rem); left: 0;
  width: 0.875rem; height: 0.875rem;
  border: 1.5px solid var(--ink-faint); background: var(--surface);
}
.route__stop:not(:last-child)::after {
  /* 次のマスへの航路線 */
  content: ""; position: absolute; top: calc(1.25rem - 0.75px);
  left: calc(0.875rem + 0.375rem); right: 0.375rem;
  border-top: 1.5px dashed var(--ink-faint);
  transform-origin: left center;
}
.route__stop.leads-done::after { border-top-style: solid; border-color: var(--celadon-deep); }
.route__stop.is-done .route__node { background: var(--celadon-deep); border-color: var(--celadon-deep); }
.route__stop.is-checking .route__node { border-style: dashed; border-color: var(--celadon-deep); }
.route__label { display: block; font-size: 0.9375rem; font-weight: 500; letter-spacing: 0.04em; }
.route__stop.is-none .route__label { color: var(--ink-faint); font-weight: 400; }
.route__note { display: block; font-size: 0.8125rem; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.route__stop.is-checking .route__note { color: var(--celadon-deep); }

.seal {
  position: absolute; top: 0; left: 1.375rem; z-index: 1;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--serif); font-weight: 700; font-size: 0.8125rem; letter-spacing: 0.06em; line-height: 1;
  color: var(--seal); background: var(--surface);
  border: 1.5px solid var(--seal);
  box-shadow: inset 0 0 0 2px var(--surface), inset 0 0 0 3px var(--seal);
  transform: rotate(-12deg);
}

.legend {
  display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem;
  font-size: 0.8125rem; color: var(--ink-soft); list-style: none; margin: 0; padding: 0;
}
.legend li { display: inline-flex; align-items: center; gap: 0.4rem; }
.legend i { display: inline-block; width: 0.75rem; height: 0.75rem; border: 1.5px solid var(--ink-faint); }
.legend .l-done { background: var(--celadon-deep); border-color: var(--celadon-deep); }
.legend .l-checking { border-style: dashed; border-color: var(--celadon-deep); }
.legend .l-seal { width: 1rem; height: 1rem; border-radius: 50%; border-color: var(--seal); }

/* ---------- 上陸の記録（トップ・上陸状況ページ） ---------- */
.ledger { background: var(--tint); --surface: var(--tint); padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.ledger__foot { margin-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem 2rem; align-items: center; }

.entries { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--line-strong); }
.entry {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  grid-template-areas: "rank name" "route route" "status status";
  gap: 0.25rem 1rem;
  padding-block: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--line);
}
.entry__rank { grid-area: rank; font-family: var(--serif); color: var(--celadon-deep); line-height: 1; padding-top: 0.25rem; }
.entry__rank .n { font-size: 2.5rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.entry__rank .u { font-size: 0.875rem; margin-left: 0.1em; }
.entry__rank .t { font-size: 0.875rem; line-height: 1.4; display: block; }
.entry__rank .k { display: block; font-family: var(--sans); font-size: 0.6875rem; letter-spacing: 0.12em; color: var(--ink-soft); margin-bottom: 0.4rem; }
.entry__name { grid-area: name; min-width: 0; }
.entry__cat { font-size: 0.8125rem; color: var(--ink-soft); letter-spacing: 0.08em; }
.entry__name h3 { font-size: 1.1875rem; line-height: 1.55; }
.entry__sub { font-size: 0.875rem; color: var(--ink-soft); line-height: 1.6; }
.entry__route { grid-area: route; margin-top: 0.5rem; }
.entry__status { grid-area: status; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 1rem; font-size: 0.9375rem; margin-top: 0.5rem; }
.entry__status a { white-space: nowrap; }

@media (min-width: 860px) {
  .entry {
    grid-template-columns: 5.5rem minmax(0, 1fr) minmax(0, 1.3fr);
    grid-template-areas: "rank name route" "rank status status";
    column-gap: 2rem;
    align-items: start;
  }
  .entry__route { margin-top: -0.5rem; }
  .entry__status { margin-top: 0.25rem; }
  .entry__rank .n { font-size: 3rem; }
}

/* ページを開いたときの動き（トップの「今週の上陸状況」だけ） */
@media (prefers-reduced-motion: no-preference) {
  .entries--animate .route__stop:not(:last-child)::after {
    animation: draw 0.7s cubic-bezier(0.3, 0.6, 0.2, 1) both;
    animation-delay: calc(var(--row, 0) * 140ms + 200ms);
  }
  .entries--animate .route__stop:nth-child(2)::after { animation-delay: calc(var(--row, 0) * 140ms + 700ms); }
  .entries--animate .seal {
    animation: stamp 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
    animation-delay: calc(var(--row, 0) * 140ms + 1050ms);
  }
}
@keyframes draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes stamp {
  from { opacity: 0; transform: rotate(-12deg) scale(1.5); }
  to { opacity: 1; transform: rotate(-12deg) scale(1); }
}

/* ---------- 新着記事・記事一覧 ---------- */
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }

.posts { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--line-strong); }
.post { border-bottom: 1px solid var(--line); }
.post a {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.35rem;
  padding-block: 1.5rem; color: var(--ink); text-decoration: none;
}
.post__meta { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; font-size: 0.875rem; color: var(--ink-soft); }
.post__meta .cats { color: var(--celadon-deep); }
.post__title { font-size: clamp(1.1875rem, 1.1rem + 0.4vw, 1.375rem); line-height: 1.6; }
.post a:hover .post__title { text-decoration: underline; text-decoration-color: var(--celadon-deep); text-underline-offset: 0.3em; }
.post__desc { font-size: 1rem; color: var(--ink-soft); line-height: 1.8; }

@media (min-width: 860px) {
  .post a { grid-template-columns: 11rem minmax(0, 1fr); column-gap: 2rem; }
  .post__meta { grid-row: 1 / span 2; flex-direction: column; padding-top: 0.3rem; }
}

.filter { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; list-style: none; margin: 0 0 2rem; padding: 0; font-size: 1rem; }
.filter a { color: var(--ink-soft); text-decoration: none; padding-block: 0.375rem; display: inline-block; }
.filter a:hover { color: var(--ink); }
.filter a[aria-current="page"] { color: var(--ink); font-weight: 500; border-bottom: 2px solid var(--celadon-deep); }

.empty { color: var(--ink-soft); padding-block: 2rem; }

/* ---------- ページ見出し（一覧・固定ページ） ---------- */
.page-head { padding-block: clamp(2.5rem, 6vw, 4.5rem) 2rem; }
.page-head h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.5rem); margin-top: 0.5rem; }
.page-head__lead { margin-top: 1rem; color: var(--ink-soft); max-width: var(--measure); }

/* ---------- 上陸状況ページ ---------- */
.status-index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1.5px solid var(--line-strong); }
.status-index li { border-bottom: 1px solid var(--line); }
.status-index li:nth-child(odd) { border-right: 1px solid var(--line); }
.status-index a { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; padding: 0.875rem 1rem 0.875rem 0; color: var(--ink); text-decoration: none; }
.status-index li:nth-child(even) a { padding-left: 1rem; }
.status-index .count { font-family: var(--serif); font-size: 1.75rem; color: var(--celadon-deep); font-variant-numeric: tabular-nums; }
@media (min-width: 860px) {
  .status-index { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .status-index li { border-right: 1px solid var(--line); }
  .status-index li:last-child { border-right: 0; }
  .status-index li a { padding-left: 1rem; }
  .status-index li:first-child a { padding-left: 0; }
}
.status-group { padding-block: 3rem 1rem; scroll-margin-top: 1rem; }
.status-group h2 { font-size: 1.5rem; }
.status-group__lead { color: var(--ink-soft); font-size: 1rem; margin-bottom: 1.25rem; }

/* ---------- 記事 ---------- */
.article-head { padding-block: clamp(2.5rem, 6vw, 4.5rem) 0; }
.article-head h1 { font-size: clamp(1.625rem, 1.2rem + 2vw, 2.375rem); line-height: 1.55; margin-block: 0.75rem 1.25rem; }
.article-head__meta { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; font-size: 0.9375rem; color: var(--ink-soft); }
.article-pr { margin-top: 1.25rem; padding: 0.625rem 0; border-block: 1px solid var(--line); font-size: 0.9375rem; color: var(--ink-soft); }

.prose { padding-block: 2rem clamp(3rem, 8vw, 6rem); }
.prose > * + * { margin-top: 1.5em; }
.prose h2 {
  font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.625rem);
  margin-top: 3.5rem; padding-top: 1.25rem;
  border-top: 1px solid var(--line); position: relative;
}
.prose h2::before { content: ""; position: absolute; top: -1px; left: 0; width: 2.5rem; border-top: 3px solid var(--celadon-deep); }
.prose h3 { font-size: 1.25rem; margin-top: 2.5rem; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li + li { margin-top: 0.4em; }
.prose .meta, .meta { font-size: 0.9375rem; color: var(--ink-soft); }
.prose .prose-table { overflow-x: auto; }
.prose table { width: 100%; border-collapse: collapse; font-size: 1rem; line-height: 1.6; }
.prose th, .prose td { text-align: left; padding: 0.75rem 0.75rem 0.75rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose thead th { font-weight: 500; font-size: 0.875rem; color: var(--ink-soft); border-bottom: 1.5px solid var(--line-strong); }
.prose tbody th { font-weight: 500; white-space: nowrap; padding-right: 1.5rem; }

.note { background: var(--tint); padding: 1.125rem 1.25rem; font-size: 0.9375rem; line-height: 1.85; }
.note > * + * { margin-top: 0.75em; }

/* 公開前メモ（公開前に消す） */
.todo {
  border: 1.5px dashed var(--seal); padding: 1rem 1.25rem; font-size: 1rem; line-height: 1.8;
  color: var(--ink);
}
.todo::before { content: "公開前メモ"; display: block; font-size: 0.75rem; letter-spacing: 0.12em; color: var(--seal); margin-bottom: 0.25rem; }
.todo > * + * { margin-top: 0.75em; }

/* ---------- 記事の商品ブロック ---------- */
.product {
  --surface: var(--paper);
  border: 1px solid var(--line-strong);
  padding: clamp(1.25rem, 4vw, 2rem);
  margin-block: 3rem !important;
  background: var(--surface);
}
.product__kicker { display: flex; flex-wrap: wrap; gap: 0 1.25rem; font-size: 0.8125rem; letter-spacing: 0.1em; color: var(--celadon-deep); }
.product__name { font-size: clamp(1.3125rem, 1.2rem + 0.6vw, 1.5rem); margin-top: 0.25rem !important; }
.product__sub { font-size: 0.875rem; color: var(--ink-soft); line-height: 1.6; }
.product__sub .dot { margin-inline: 0.25em; }
.product__image { margin: 1.25rem 0 0; border: 1px solid var(--line); aspect-ratio: 4 / 3; overflow: hidden; max-width: 22rem; }
.product__image img { width: 100%; height: 100%; object-fit: cover; }
.product__route { margin-top: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.product__facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1rem 0 0; }
.product__facts dt { font-size: 0.8125rem; color: var(--ink-soft); letter-spacing: 0.06em; }
.product__facts dd { margin: 0; font-weight: 500; line-height: 1.6; }
.product__body { margin-top: 1.25rem; }
.product__body > * + * { margin-top: 1.25em; }
.product__buy { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-top: 1.5rem; }
.pr-tag { font-size: 0.75rem; letter-spacing: 0.1em; color: var(--ink-soft); border: 1px solid var(--line-strong); padding: 0 0.4rem; line-height: 1.6; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 3rem; padding: 0.5rem 1.75rem;
  background: var(--celadon-deep); color: var(--on-accent);
  border: 1.5px solid var(--celadon-deep);
  font-weight: 500; letter-spacing: 0.08em; text-decoration: none;
}
.btn:hover { background: color-mix(in srgb, var(--celadon-deep) 85%, var(--ink)); text-decoration: none; }
.btn--sub { background: transparent; color: var(--celadon-deep); }
.btn--sub:hover { background: var(--tint); }
.product__updated { margin-top: 1rem; font-size: 0.8125rem; color: var(--ink-soft); }

/* ---------- フッター ---------- */
.site-foot { border-top: 1px solid var(--line); padding-block: 2.5rem 3rem; font-size: 0.9375rem; color: var(--ink-soft); }
.site-foot__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.25rem 2rem; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.site-foot a { color: var(--ink-soft); }
.site-foot__name { font-family: var(--serif); font-weight: 700; color: var(--ink); letter-spacing: 0.12em; }

/* ---------- 404 ---------- */
.notfound { padding-block: clamp(4rem, 12vw, 8rem); }
.notfound .route { max-width: 28rem; margin-block: 2rem; }