/* =========================================================
   Yubin.co.jp — Master Site CSS
   Magazine system for index, sections, articles, gallery,
   sitemap, admin pages, and mobile navigation.
   ========================================================= */

:root {
  --paper: #f7f1e6;
  --paper-soft: #fffaf2;
  --paper-deep: #efe2cf;
  --ink: #2d241d;
  --text: #44362b;
  --muted: #76695f;
  --line: rgba(45, 36, 29, 0.18);
  --red: #b11f2a;
  --red-dark: #841722;
  --gold: #b88437;
  --white: #fffaf2;
  --true-white: #ffffff;
  --shadow: 0 24px 60px rgba(67, 45, 28, 0.14);
  --shadow-soft: 0 14px 36px rgba(67, 45, 28, 0.08);
  --radius: 26px;
  --radius-lg: 34px;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", "Times New Roman", serif;
  --sans: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
}

/* =========================================================
   Base
   ========================================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(177, 31, 42, 0.08), transparent 34rem),
    linear-gradient(180deg, var(--paper), #fbf6ed 48%, var(--paper-deep));
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.8;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

p {
  margin: 0;
}

main {
  overflow: hidden;
}

::selection {
  background: rgba(177, 31, 42, 0.18);
}

/* =========================================================
   Header / Navigation
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem clamp(1rem, 4vw, 3rem);
  background: rgba(247, 241, 230, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--red);
  color: white;
  font-size: 1.45rem;
  font-weight: 900;
  box-shadow: 0 10px 24px rgba(177, 31, 42, 0.26);
}

.brand strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.main-nav a {
  padding: 0.55rem 0.78rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: var(--white);
  color: var(--red-dark);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  font-size: 1.2rem;
  cursor: pointer;
}

/* =========================================================
   Shared Type / Buttons
   ========================================================= */

.eyebrow,
.section-kicker,
.card-label {
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 900;
  font-size: 0.74rem;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  letter-spacing: -0.045em;
}

.lead {
  font-family: var(--serif);
  font-size: clamp(1.06rem, 1.45vw, 1.34rem);
  line-height: 1.95;
  color: var(--text);
  max-width: 42rem;
}

.hero-actions,
.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.76rem 1.16rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 900;
  line-height: 1.2;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--red);
  color: white;
  border-color: var(--red);
  box-shadow: 0 14px 28px rgba(177, 31, 42, 0.25);
}

.button.secondary {
  background: var(--white);
  color: var(--red-dark);
  border-color: var(--line);
}

/* =========================================================
   New Magazine Homepage System
   Works with current /index.html full-file structure:
   .hero + .hero-photo / .hero-label / .hero-copy,
   .magazine, .intro, .top-stories, .dept-grid, .paths, etc.
   ========================================================= */

.hero {
  max-width: 1320px;
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: clamp(1rem, 2vw, 1.6rem);
  align-items: stretch;
  min-height: calc(100vh - 82px);
}

.hero-photo {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  min-height: 620px;
  background: #2a1c14;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 48%, rgba(20, 12, 8, 0.68));
  pointer-events: none;
}

.hero-label {
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 2;
  padding: 1rem 1.1rem;
  border-radius: 22px;
  color: white;
  background: rgba(32, 19, 12, 0.68);
  backdrop-filter: blur(12px);
  line-height: 1.65;
  font-weight: 700;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.4rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(185, 40, 34, 0.13), transparent 36%),
    rgba(255, 250, 242, 0.86);
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0.4rem 0 1.15rem;
  font-family: var(--serif);
  font-size: clamp(3.35rem, 7vw, 7.8rem);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.magazine {
  max-width: 1240px;
  margin: clamp(2.4rem, 5.5vw, 5.4rem) auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
}

.magazine + .magazine {
  margin-top: clamp(3.5rem, 8vw, 7rem);
}

.intro {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(1.2rem, 4vw, 3rem);
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: var(--shadow-soft);
}

.intro h2,
.section-head h2,
.feature-text h2,
.closing h2,
.international-note h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.2rem);
  line-height: 1.05;
}

.intro p,
.section-head p,
.feature-text p,
.closing p,
.international-note p {
  color: var(--muted);
  line-height: 1.9;
}

.top-stories {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  margin-top: clamp(2rem, 5vw, 4rem);
}

.lead-story {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: white;
  box-shadow: var(--shadow);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.lead-story:hover,
.side-card:hover,
.dept-card:hover,
.path-card:hover,
.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 42px rgba(61, 38, 23, 0.13);
}

.lead-story img {
  width: 100%;
  height: clamp(520px, 52vw, 680px);
  object-fit: cover;
}

.lead-story .feature-text {
  padding: clamp(1.6rem, 4vw, 3rem);
}

.lead-story .feature-text h2 {
  max-width: 760px;
}

.feature-text {
  padding: clamp(1.2rem, 3vw, 2.2rem);
}

.feature-text p {
  margin-top: 0.8rem;
}

.side-stories {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.side-card {
  display: grid;
  grid-template-columns: 145px 1fr;
  gap: 1rem;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 13px 32px rgba(61, 38, 23, 0.07);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.side-card img {
  width: 145px;
  height: 132px;
  object-fit: cover;
  border-radius: 17px;
}

.side-card h3 {
  margin: 0.15rem 0 0.3rem;
  font-size: 1.35rem;
  line-height: 1.22;
}

.side-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.62;
  font-size: 0.92rem;
}

.new-bar {
  margin-top: clamp(1.4rem, 4vw, 3rem);
  padding: 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.new-bar strong {
  margin-right: 0.3rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.25rem;
}

.new-bar a {
  display: inline-flex;
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--red-dark);
  background: white;
  font-weight: 800;
  font-size: 0.92rem;
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.section-head p {
  max-width: 680px;
}

.dept-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.dept-card {
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: white;
  box-shadow: 0 10px 24px rgba(61, 38, 23, 0.055);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.dept-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  filter: saturate(0.94);
}

.dept-card div {
  padding: 1rem 1.1rem 1.15rem;
}

.dept-card h3 {
  margin: 0.2rem 0 0.35rem;
  font-size: 1.5rem;
}

.dept-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.94rem;
}

.paths {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.path-card {
  padding: 1.15rem;
  border: 1px solid rgba(75, 48, 31, 0.14);
  border-radius: 22px;
  background: rgba(255, 250, 242, 0.72);
  box-shadow: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.path-card h3 {
  margin: 0;
  font-size: 1.24rem;
  line-height: 1.32;
  color: var(--red-dark);
}

.path-card p {
  margin: 0.5rem 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.92rem;
}

.international-note {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1fr) auto;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at top right, rgba(185, 40, 34, 0.11), transparent 34%),
    rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
}

.international-note h2 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.8rem, 3.2vw, 3.4rem);
  line-height: 1.08;
}

.international-note p {
  line-height: 1.8;
}

.wide-feature {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 1.2rem;
  align-items: center;
  padding: clamp(1.1rem, 3vw, 2rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #24160f;
  color: #fff8ed;
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-top: clamp(1rem, 3vw, 2rem);
}

.wide-feature .feature-text p {
  color: rgba(255, 248, 237, 0.78);
}

.wide-feature img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  border-radius: 22px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.gallery-card {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.gallery-card img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

.gallery-card span {
  position: absolute;
  left: 0.8rem;
  right: 0.8rem;
  bottom: 0.8rem;
  padding: 0.65rem 0.8rem;
  border-radius: 999px;
  text-align: center;
  color: white;
  background: rgba(34, 20, 12, 0.74);
  backdrop-filter: blur(8px);
  font-weight: 900;
}

.closing {
  max-width: 880px;
  margin: clamp(3rem, 7vw, 7rem) auto;
  padding: clamp(1rem, 4vw, 3rem) clamp(1rem, 3vw, 2rem) 0;
  text-align: center;
  border-top: 1px solid var(--line);
}

.closing p {
  margin-top: 1rem;
  font-size: 1.05rem;
}

/* =========================================================
   Legacy / Section Pages
   Used by /letters, /culture, /travel, /guide, /stories
   ========================================================= */

.hero-image {
  position: relative;
}

.hero-image::before {
  content: "";
  position: absolute;
  inset: 1.25rem -1.25rem -1.25rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  z-index: -1;
}

.hero-image img {
  aspect-ratio: 5 / 4;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-hero {
  min-height: auto;
}

.intro-panel,
.magazine-band,
.editorial-list,
.newsletter-panel {
  max-width: 1180px;
  margin: clamp(2rem, 5vw, 5rem) auto;
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 242, 0.72);
  box-shadow: var(--shadow-soft);
}

.intro-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}

.intro-panel h2,
.section-heading h2,
.magazine-band h2,
.newsletter-panel h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  margin: 0.4rem 0 0;
}

.intro-panel p:last-child,
.magazine-band p,
.newsletter-panel p {
  color: #4d4036;
  font-size: 1.02rem;
}

.feature-grid {
  max-width: 1280px;
  margin: clamp(2rem, 5vw, 5rem) auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.feature-card {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(67, 45, 28, 0.09);
}

.feature-card.large {
  grid-column: span 2;
}

.feature-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feature-card.large img {
  aspect-ratio: 16 / 9;
}

.card-body {
  padding: 1.35rem;
}

.card-body h2 {
  margin: 0.35rem 0 0.65rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.5vw, 2.45rem);
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.card-body h2 a {
  background-image: linear-gradient(var(--red), var(--red));
  background-size: 0% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 220ms ease;
}

.card-body h2 a:hover {
  background-size: 100% 2px;
}

.card-body p:last-child {
  color: var(--muted);
  font-size: 0.98rem;
}

.magazine-band {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1.05fr);
  gap: 2rem;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(132, 23, 34, 0.93), rgba(45, 36, 29, 0.95));
  color: white;
  border: none;
}

.magazine-band .section-kicker {
  color: #f5c26c;
}

.magazine-band p {
  color: rgba(255, 255, 255, 0.84);
}

.magazine-band a {
  display: inline-flex;
  margin-top: 1.35rem;
  color: white;
  border-bottom: 1px solid rgba(255, 255, 255, 0.65);
  font-weight: 800;
}

.magazine-band img {
  border-radius: calc(var(--radius) - 8px);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.24);
}

.section-heading {
  max-width: 1180px;
  margin: clamp(2rem, 5vw, 4rem) auto 1.25rem;
  padding: 0 clamp(1rem, 4vw, 2rem);
  text-align: center;
}

.section-heading.left {
  text-align: left;
  padding: 0;
  margin: 0 0 1.5rem;
}

.department-grid {
  max-width: 1180px;
  margin: 0 auto clamp(2rem, 6vw, 5rem);
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.department-card {
  min-height: 220px;
  padding: 1.35rem;
  border-radius: var(--radius);
  background: rgba(255, 250, 242, 0.78);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.department-card:hover {
  transform: translateY(-4px);
  background: var(--white);
  box-shadow: 0 18px 44px rgba(67, 45, 28, 0.12);
}

.department-card span {
  color: var(--gold);
  font-family: var(--serif);
  font-size: 0.95rem;
}

.department-card h3 {
  font-family: var(--serif);
  font-size: 2rem;
  margin: auto 0 0.55rem;
  letter-spacing: -0.04em;
}

.department-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.story-list {
  display: grid;
  gap: 0.8rem;
}

.story-list a {
  display: grid;
  grid-template-columns: minmax(180px, 0.6fr) minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.story-list strong {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1.25;
}

.story-list span {
  color: var(--muted);
}

.newsletter-panel {
  text-align: center;
  max-width: 980px;
  background:
    radial-gradient(circle at top, rgba(177, 31, 42, 0.08), transparent 30rem),
    var(--white);
}

.newsletter-panel p {
  max-width: 680px;
  margin: 1rem auto 0;
}

/* =========================================================
   Long Article Pages
   ========================================================= */

.article-layout {
  max-width: 1180px;
  margin: clamp(2rem, 5vw, 5rem) auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 96px;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 250, 242, 0.84);
  box-shadow: var(--shadow-soft);
}

.article-toc a {
  display: block;
  padding: 0.62rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.article-toc a:hover {
  color: var(--red-dark);
}

.article-body {
  max-width: 820px;
}

.article-body section {
  margin-bottom: clamp(2.2rem, 5vw, 4.5rem);
}

.article-body h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -0.045em;
  margin: 0.35rem 0 1.15rem;
}

.article-body p {
  color: #44362b;
  font-size: clamp(1.02rem, 1.35vw, 1.14rem);
  margin-bottom: 1.2rem;
}

.article-image {
  margin: clamp(2rem, 5vw, 4rem) 0;
}

.article-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.article-image figcaption {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.article-image.wide {
  margin-left: calc(clamp(1rem, 5vw, 4rem) * -1);
  margin-right: calc(clamp(1rem, 5vw, 4rem) * -1);
}

.pullquote {
  padding: clamp(1.4rem, 4vw, 2.5rem);
  border-top: 3px solid var(--red);
  border-bottom: 1px solid var(--line);
  background: rgba(177, 31, 42, 0.055);
}

.pullquote p {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.5vw, 3rem);
  line-height: 1.28;
  color: var(--red-dark);
  margin: 0;
}

.note-box {
  padding: 1.35rem;
  margin: 1.6rem 0;
  border-radius: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(67, 45, 28, 0.07);
}

.note-box h3 {
  margin: 0 0 0.65rem;
  font-family: var(--serif);
  font-size: 1.45rem;
}

.note-box p {
  margin: 0;
}

.article-end-card {
  padding: clamp(1.35rem, 4vw, 2.4rem);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at top left, rgba(177, 31, 42, 0.08), transparent 24rem),
    var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(67, 45, 28, 0.1);
}

.article-end-card h2 {
  margin-bottom: 1.3rem;
}

.next-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.next-links a {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(247, 241, 230, 0.72);
  border: 1px solid var(--line);
}

.next-links strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.25rem;
  margin-bottom: 0.3rem;
}

.next-links span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* =========================================================
   Utility Cards
   ========================================================= */

.address-example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 1.6rem 0 2rem;
}

.address-example-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.address-example {
  padding: 1.15rem;
  border-radius: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px rgba(67, 45, 28, 0.07);
}

.address-example h3 {
  margin: 0 0 0.65rem;
  font-family: var(--serif);
  font-size: 1.28rem;
  color: var(--red-dark);
}

.address-example p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
}

.mistake-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.mistake-list div {
  display: grid;
  grid-template-columns: minmax(150px, 0.4fr) minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 250, 242, 0.72);
  border: 1px solid var(--line);
}

.mistake-list strong {
  font-family: var(--serif);
  color: var(--red-dark);
  font-size: 1.15rem;
}

.mistake-list span {
  color: var(--muted);
}

/* =========================================================
   Gallery Systems
   Supports older gallery, full gallery, and lightbox.
   ========================================================= */

.gallery-filter {
  max-width: 1180px;
  margin: 0 auto 1.35rem;
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: center;
}

.gallery-chip {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.58rem 0.9rem;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.gallery-chip:hover,
.gallery-chip.is-active {
  background: var(--red);
  color: white;
  border-color: var(--red);
}

.yubin-gallery-grid,
.full-gallery-grid {
  max-width: 1280px;
  margin: 0 auto clamp(2rem, 6vw, 5rem);
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.gallery-item,
.gallery-tile {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
  cursor: zoom-in;
  text-align: left;
}

.gallery-item img,
.gallery-tile img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  transition: transform 320ms ease, filter 320ms ease;
}

.gallery-item:hover img,
.gallery-tile:hover img {
  transform: scale(1.045);
  filter: brightness(0.84);
}

.gallery-item span,
.gallery-tile figcaption {
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.85rem;
  display: block;
  padding: 0.7rem 0.85rem;
  border-radius: 16px;
  background: rgba(45, 36, 29, 0.76);
  color: white;
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.35;
  backdrop-filter: blur(10px);
}

.gallery-item.is-hidden {
  display: none;
}

.gallery-room {
  max-width: 1240px;
  margin: clamp(2.5rem, 6vw, 5.5rem) auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.gallery-room-head {
  max-width: 820px;
  margin-bottom: 1.2rem;
}

.gallery-room-head h2 {
  margin: 0.25rem 0 0.55rem;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 5rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.gallery-room-head p {
  color: var(--muted);
  line-height: 1.85;
}

.gallery-room-nav {
  max-width: 1240px;
  margin: clamp(2rem, 5vw, 4rem) auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.gallery-room-nav-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.86);
  box-shadow: var(--shadow-soft);
}

.gallery-room-nav a {
  padding: 0.68rem 0.9rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--red-dark);
  font-weight: 800;
  font-size: 0.92rem;
}

.gallery-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 3rem);
  background: rgba(22, 16, 12, 0.9);
}

.gallery-lightbox.is-open {
  display: flex;
}

.gallery-lightbox figure {
  width: min(1040px, 100%);
  margin: 0;
}

.gallery-lightbox img {
  max-width: min(96vw, 1500px);
  max-height: 82vh;
  width: auto;
  object-fit: contain;
  border-radius: 22px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  background: #111;
}

.gallery-lightbox figcaption,
.gallery-lightbox-caption {
  margin: 0.8rem auto 0;
  max-width: 920px;
  color: white;
  text-align: center;
}

.gallery-lightbox-caption {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  width: min(92vw, 920px);
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-weight: 800;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next,
.gallery-close,
.gallery-prev,
.gallery-next {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 250, 242, 0.14);
  color: white;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.gallery-close,
.lightbox-close {
  top: 1rem;
  right: 1rem;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  font-size: 2rem;
  line-height: 1;
}

.gallery-prev,
.gallery-next,
.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 70px;
  border-radius: 18px;
  font-size: 3rem;
  line-height: 0.8;
}

.gallery-prev,
.lightbox-prev {
  left: 1rem;
}

.gallery-next,
.lightbox-next {
  right: 1rem;
}

/* =========================================================
   Sitemap
   ========================================================= */

.sitemap-wrap {
  max-width: 1180px;
  margin: clamp(2rem, 5vw, 5rem) auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
  display: grid;
  gap: 1.25rem;
}

.sitemap-section {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 242, 0.76);
  box-shadow: var(--shadow-soft);
}

.sitemap-section h2 {
  margin: 0.35rem 0 1rem;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.sitemap-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.sitemap-links a {
  display: block;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.sitemap-links a:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(67, 45, 28, 0.1);
}

.sitemap-links strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--red-dark);
  line-height: 1.25;
}

.sitemap-links span {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  background: #2d241d;
  color: white;
}

.site-footer strong {
  font-family: var(--serif);
  font-size: 1.4rem;
}

.site-footer p {
  color: rgba(255, 255, 255, 0.72);
  margin-top: 0.35rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.8rem 1.2rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.76);
}

.site-footer a:hover {
  color: white;
}

/* =========================================================
   Animation Hook
   ========================================================= */

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1050px) {
  .hero,
  .intro,
  .intro-panel,
  .top-stories,
  .wide-feature,
  .international-note,
  .magazine-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-photo {
    min-height: 420px;
  }

  .lead-story img {
    height: 430px;
  }

  .dept-grid,
  .department-grid,
  .paths,
  .gallery-grid,
  .full-gallery-grid,
  .yubin-gallery-grid,
  .gallery-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card.large {
    grid-column: span 2;
  }

  .wide-feature {
    background: rgba(255, 255, 255, 0.78);
    color: var(--ink);
  }

  .wide-feature .feature-text p {
    color: var(--muted);
  }
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-toc {
    position: static;
  }

  .article-toc a {
    display: inline-flex;
    margin-right: 0.75rem;
    border-top: 0;
    border-bottom: 1px solid var(--line);
  }

  .article-image.wide {
    margin-left: 0;
    margin-right: 0;
  }

  .next-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 76px;
    padding: 1rem;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
    justify-content: flex-start;
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    background: rgba(177, 31, 42, 0.07);
  }

  .hero-copy {
    padding: 1.2rem;
  }

  .side-card {
    grid-template-columns: 1fr;
  }

  .side-card img {
    width: 100%;
    height: 205px;
  }

  .dept-grid,
  .department-grid,
  .paths,
  .gallery-grid,
  .full-gallery-grid,
  .yubin-gallery-grid,
  .gallery-preview-grid,
  .feature-grid,
  .address-example-grid,
  .address-example-grid.two,
  .sitemap-links {
    grid-template-columns: 1fr;
  }

  .feature-card.large {
    grid-column: span 1;
  }

  .department-card {
    min-height: 190px;
  }

  .story-list a {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .mistake-list div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .site-footer {
    flex-direction: column;
  }

  .site-footer nav {
    justify-content: flex-start;
  }

  .gallery-room-nav-inner {
    border-radius: 24px;
  }
}

@media (max-width: 680px) {
  .hero {
    padding: 1rem;
  }

  .hero-photo {
    min-height: 310px;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 15vw, 4.6rem);
  }

  .lead-story img {
    height: 300px;
  }

  .wide-feature img {
    height: 280px;
  }

  .gallery-card,
  .gallery-card img,
  .gallery-item,
  .gallery-item img,
  .gallery-tile,
  .gallery-tile img {
    min-height: 245px;
  }

  .international-note {
    padding: 1.15rem;
  }

  .button {
    width: 100%;
  }

  .buttons,
  .hero-actions {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .brand strong {
    font-size: 1.04rem;
  }

  .brand small {
    font-size: 0.68rem;
  }

  .site-header {
    gap: 0.75rem;
  }

  .article-body p {
    font-size: 1rem;
  }

  .gallery-lightbox {
    padding: 0.75rem;
  }

  .gallery-prev,
  .lightbox-prev {
    left: 0.35rem;
  }

  .gallery-next,
  .lightbox-next {
    right: 0.35rem;
  }

  .gallery-lightbox-caption {
    border-radius: 18px;
    font-size: 0.9rem;
  }
}