/* えらぶ基準 — base styles
   色：紙 #F4F6F4 / 藍 #1E3A5C / 墨 #24292E / 罫 #C7CFD6 / 検品の黄 #F0C232 */

:root {
  --paper: #f4f6f4;
  --white: #ffffff;
  --ink: #24292e;
  --indigo: #1e3a5c;
  --rule: #c7cfd6;
  --tag: #f0c232;
  --muted: #5b6670;
  --measure: 42rem;
  --font: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.85;
}

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

a {
  color: var(--indigo);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 3px;
}

.wrap {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- header ---------- */

.site-header {
  background: var(--paper);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--indigo);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.logo svg {
  width: 1.6rem;
  height: 1.6rem;
  flex: none;
}

.site-nav ul {
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.875rem;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--indigo);
  text-decoration: underline;
}

/* 物差し：ヘッダー直下の細い帯。1目盛り＝0.5rem、5目盛りごとに中、10目盛りごとに長 */
.ruler {
  height: 0.9rem;
  background-color: var(--tag);
  background-image:
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 5rem),
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 2.5rem),
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 0.5rem);
  background-size: 100% 0.65rem, 100% 0.45rem, 100% 0.28rem;
  background-position: 1.25rem 0, 1.25rem 0, 1.25rem 0;
  background-repeat: repeat-x;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.ad-note {
  margin: 0;
  padding: 0.4rem 0;
  background: #e9edea;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.6;
}

.ad-note .wrap {
  display: block;
}

/* ---------- top page ---------- */

.intro {
  padding: 2.25rem 0 0.5rem;
}

.intro h1 {
  margin: 0;
  color: var(--indigo);
  font-size: clamp(1.25rem, 2.6vw, 1.625rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.articles {
  padding: 1.75rem 0 4rem;
}

.articles h2 {
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--indigo);
  color: var(--ink);
  font-size: 1.125rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--rule);
}

.card a {
  color: inherit;
  text-decoration: none;
}

.card img {
  aspect-ratio: 1200 / 630;
  width: 100%;
  object-fit: cover;
  border-bottom: 1px solid var(--rule);
}

.card-body {
  padding: 0.9rem 1rem 1.1rem;
}

.card-meta {
  display: flex;
  gap: 0.75rem;
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.card-meta .cat {
  color: var(--indigo);
  font-weight: 700;
}

.card h3 {
  margin: 0 0 0.4rem;
  color: var(--indigo);
  font-size: 1.0625rem;
  line-height: 1.55;
}

.card a:hover h3 {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.card p.desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
}

.empty-note {
  margin: 0;
  padding: 2rem 0;
  color: var(--muted);
}

/* ---------- article-style pages ---------- */

.page {
  padding: 2.5rem 0 4rem;
}

.page article {
  max-width: var(--measure);
}

.page h1 {
  margin: 0 0 0.75rem;
  color: var(--indigo);
  font-size: clamp(1.5rem, 3.6vw, 2.125rem);
  line-height: 1.45;
}

.page .updated {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.page h2 {
  margin: 2.75rem 0 0.75rem;
  padding-top: 1rem;
  border-top: 2px solid var(--indigo);
  color: var(--indigo);
  font-size: 1.3125rem;
  line-height: 1.5;
}

.page h3 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.0625rem;
  line-height: 1.6;
}

.page ul,
.page ol {
  padding-left: 1.4rem;
}

.page li + li {
  margin-top: 0.35rem;
}

.breadcrumb {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
}

.pr {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--muted);
  color: var(--muted);
  font-size: 0.75rem;
}

.lead-img {
  margin: 0 0 1.75rem;
  border: 1px solid var(--rule);
}

/* 先に結論：黄色い付箋 */
.summary {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--white);
  border-left: 6px solid var(--tag);
}

.summary p:first-child {
  margin-top: 0;
  font-weight: 700;
}

.summary dl {
  margin: 0;
}

.summary dt {
  margin-top: 0.75rem;
  font-weight: 700;
  color: var(--indigo);
}

.summary dd {
  margin: 0.1rem 0 0;
}

/* 比較表 */
.table-scroll {
  margin: 1.25rem 0 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--rule);
  background: var(--white);
}

.compare {
  width: 100%;
  min-width: 38rem;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: 1.7;
}

.compare th,
.compare td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.compare thead th {
  background: var(--indigo);
  color: var(--white);
  font-size: 0.875rem;
}

.compare tbody th {
  width: 7.5rem;
  background: #eef1f3;
  font-weight: 700;
  position: sticky;
  left: 0;
}

.compare tr:last-child th,
.compare tr:last-child td {
  border-bottom: 0;
}

.table-note {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

.checklist {
  list-style: none;
  padding-left: 0 !important;
}

.checklist li {
  position: relative;
  padding-left: 1.75rem;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--indigo);
  background: var(--white);
}

.sources {
  margin-top: 2.75rem;
  padding: 1rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--rule);
  font-size: 0.875rem;
}

.sources h2 {
  margin: 0 0 0.5rem;
  padding: 0;
  border: 0;
  font-size: 1rem;
}

.sources ul {
  margin: 0;
}

.facts {
  display: grid;
  grid-template-columns: 8rem 1fr;
  margin: 0;
  border-top: 2px solid var(--indigo);
}

.facts dt,
.facts dd {
  margin: 0;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
}

.facts dt {
  font-weight: 700;
}

/* 比べ方ページ */
.rules {
  display: grid;
  grid-template-columns: minmax(9rem, 13rem) 1fr;
  margin: 0;
  border-top: 2px solid var(--indigo);
}

.rules dt,
.rules dd {
  margin: 0;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
}

.rules dt {
  padding-right: 1.5rem;
  font-weight: 700;
}

/* ---------- footer ---------- */

.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--rule);
  font-size: 0.875rem;
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.site-footer small {
  color: var(--muted);
}

/* ---------- small screens ---------- */

@media (max-width: 40rem) {
  .site-header .wrap {
    flex-wrap: wrap;
    row-gap: 0.25rem;
  }

  .intro {
    padding-top: 1.5rem;
  }

  .rules,
  .facts {
    grid-template-columns: 1fr;
  }

  .rules dt,
  .facts dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .compare {
    min-width: 0;
    font-size: 0.8125rem;
    line-height: 1.65;
  }

  .compare th,
  .compare td {
    padding: 0.55rem 0.45rem;
  }

  .compare tbody th {
    width: 4.75rem;
    position: static;
  }
}

/* ==========================================================
   記事：物差しの図（届いた日から何ができるか）
   目盛りの位置：届いた日 0% / 7日 18% / 1年 50% / 3年 100%
   ========================================================== */

.article-lead {
  font-size: 1.125rem;
  line-height: 1.9;
}

.span-chart {
  --c7: 18%;
  --c1y: 50%;
  margin: 1.5rem 0 0.5rem;
  padding: 1.25rem 1.25rem 1rem;
  background: var(--white);
  border: 1px solid var(--rule);
}

.sc-shop {
  margin: 0 0 0.35rem;
  color: var(--indigo);
  font-size: 0.9375rem;
  font-weight: 700;
}

.sc-row {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  align-items: center;
  gap: 0.75rem;
  min-height: 2rem;
  font-size: 0.8125rem;
}

.sc-track {
  position: relative;
  height: 0.9rem;
}

.sc-bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--from, 0%);
  right: calc(100% - var(--to));
  background: var(--indigo);
}

.sc-bar.partial {
  background: repeating-linear-gradient(135deg, var(--indigo) 0 3px, #ffffff 3px 6px);
  border: 1px solid var(--indigo);
}

.sc-none {
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 0.9rem;
}

/* 真ん中の物差し */
.sc-ruler {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.75rem;
  margin: 0.9rem 0 1.1rem;
}

.sc-ruler-band {
  position: relative;
  height: 2.6rem;
  background-color: var(--tag);
  background-image:
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 0.5rem);
  background-size: 100% 0.35rem;
  background-repeat: repeat-x;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.sc-mark {
  position: absolute;
  top: 0;
  left: var(--at);
  height: 100%;
  border-left: 2px solid var(--ink);
}

.sc-mark span {
  position: absolute;
  left: 0.3rem;
  bottom: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.sc-mark.end span {
  left: auto;
  right: 0.3rem;
}

.sc-mark.end {
  left: auto;
  right: 0;
  border-left: 0;
  border-right: 2px solid var(--ink);
}

.sc-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.sc-legend i {
  display: inline-block;
  width: 1.5rem;
  height: 0.6rem;
  margin-right: 0.35rem;
  vertical-align: -0.05rem;
  background: var(--indigo);
}

.sc-legend i.partial {
  background: repeating-linear-gradient(135deg, var(--indigo) 0 3px, #ffffff 3px 6px);
  border: 1px solid var(--indigo);
}

.figure-note {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

/* 商品を見るリンク */
.shop-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0 0.5rem;
}

.shop-links a {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border: 2px solid var(--indigo);
  background: var(--white);
  color: var(--indigo);
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
}

.shop-links a:hover {
  background: var(--indigo);
  color: var(--white);
}

@media (max-width: 40rem) {
  .span-chart {
    padding: 1rem 0.9rem 0.9rem;
  }

  .sc-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    margin-bottom: 0.55rem;
  }

  .sc-ruler {
    grid-template-columns: 1fr;
  }

  .sc-ruler > span:first-child {
    display: none;
  }

  .article-lead {
    font-size: 1.0625rem;
  }
}

.sc-mark.start span {
  top: 0.45rem;
  bottom: auto;
}

.sc-title {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  font-weight: 700;
}

/* バーの中・後ろに書く短い説明 */
.sc-track {
  height: 1.35rem;
}

.sc-bar em {
  display: block;
  padding: 0 0.45rem;
  color: var(--white);
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.35rem;
  white-space: nowrap;
  overflow: hidden;
}

.sc-after {
  position: absolute;
  left: calc(var(--at) + 0.4rem);
  top: 0;
  color: var(--ink);
  font-size: 0.75rem;
  line-height: 1.35rem;
  white-space: nowrap;
}

.sc-none {
  line-height: 1.35rem;
}

/* 棒の下に書く説明（棒の中には文字を入れない） */
.sc-track {
  height: 0.9rem;
}

.sc-desc {
  display: block;
  margin-top: 0.15rem;
  color: var(--ink);
  font-size: 0.75rem;
  line-height: 1.5;
}

.sc-row {
  align-items: start;
  padding: 0.3rem 0;
}

.sc-row > span:first-child {
  line-height: 0.9rem;
}

.sc-none {
  line-height: 0.9rem;
}

@media (max-width: 40rem) {
  .sc-row > span:first-child {
    line-height: 1.5;
  }
}

/* A8の計測用1pxの画像は場所を取らないようにする */
.shop-links .a8px {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ==========================================================
   記事：2店のランクを並べる図（縦の物差し）
   ========================================================== */

.ladders {
  margin: 1.5rem 0 0.5rem;
  padding: 1.25rem 1.25rem 1rem;
  background: var(--white);
  border: 1px solid var(--rule);
}

.ladder-grid {
  display: grid;
  grid-template-columns: 2.6rem 1fr 1fr;
  gap: 0.9rem;
}

/* 左の縦の物差し：上がきれい、下が使用感 */
.ladder-scale {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-top: 1.9rem;
  padding: 0.35rem 0;
  background-color: var(--tag);
  background-image: repeating-linear-gradient(180deg, var(--ink) 0 1px, transparent 1px 0.5rem);
  background-size: 0.35rem 100%;
  background-repeat: repeat-y;
  border-left: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.ladder-scale span {
  padding-left: 0.35rem;
}

.ladder ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--indigo);
}

.page .ladder li + li {
  margin-top: 0;
}

.ladder li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.ladder li b {
  display: block;
  color: var(--indigo);
  font-size: 0.875rem;
}

.ladder li span {
  display: block;
}

.ladder li.other {
  background: #f1f3f2;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.ladder li.warn b {
  color: var(--ink);
}

@media (max-width: 40rem) {
  .ladders {
    padding: 1rem 0.75rem 0.9rem;
  }

  .ladder-grid {
    grid-template-columns: 1.7rem 1fr 1fr;
    gap: 0.5rem;
  }

  .ladder-scale {
    font-size: 0.625rem;
  }

  .ladder-scale span {
    padding-left: 0.3rem;
    writing-mode: vertical-rl;
    margin: 0 auto;
  }

  .ladder li {
    font-size: 0.75rem;
  }

  .ladder li b {
    font-size: 0.8125rem;
  }
}

.ladder li.group-note {
  padding: 0.6rem 0 0.2rem;
  border-bottom: 0;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 700;
}

/* ==========================================================
   記事：2万円で変わる／変わらないの図、選んだ機種のカード
   ========================================================== */

.diff {
  margin: 1.5rem 0 0.5rem;
  padding: 1.25rem 1.25rem 1rem;
  background: var(--white);
  border: 1px solid var(--rule);
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.diff-price {
  color: var(--ink);
  font-weight: 400;
  font-size: 0.8125rem;
}

.diff dl {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  margin: 0;
  border-top: 2px solid var(--indigo);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.diff dt,
.diff dd {
  margin: 0;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--rule);
}

.diff dt {
  font-weight: 700;
  color: var(--muted);
}

.diff dd span {
  display: inline-block;
  padding: 0.05rem 0.4rem;
}

.diff dd.chg span {
  background: var(--tag);
  font-weight: 700;
}

.diff dd.same span {
  color: var(--muted);
}

.sc-legend i.chg {
  background: var(--tag);
}

.sc-legend i.same {
  background: #e3e7ea;
}

.picks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1rem 0 0.5rem;
}

.pick {
  padding: 0.9rem 1rem 0.8rem;
  background: var(--white);
  border: 1px solid var(--rule);
}

.pick-tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.page .pick h3 {
  margin: 0.15rem 0 0.1rem;
  color: var(--indigo);
  font-size: 1rem;
}

.pick-price {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.pick-price small {
  margin-left: 0.3rem;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 400;
}

.pick ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.8125rem;
  line-height: 1.65;
}

.page .pick li + li {
  margin-top: 0.15rem;
}

.pick-url {
  margin: 0.6rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.pick-url a {
  display: block;
  width: fit-content;
  margin-bottom: 0.3rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--indigo);
  color: var(--indigo);
  font-size: 0.8125rem;
  font-weight: 700;
  text-decoration: none;
}

.pick-url a:hover,
.pick-url a:focus-visible {
  background: var(--indigo);
  color: var(--white);
}

@media (max-width: 40rem) {
  .diff {
    padding: 1rem 0.9rem 0.9rem;
  }

  .diff-grid,
  .picks {
    grid-template-columns: 1fr;
  }
}