:root {
  --ink: #161713;
  --muted: #666861;
  --paper: #f3efe6;
  --surface: #fbf8f0;
  --surface-blue: #eef3f7;
  --line: #c8c1b3;
  --line-strong: #938b7e;
  --blue: #123f91;
  --blue-deep: #082d70;
  --red: #c64b3a;
  --radius: 0;
  --serif: "Songti SC", STSong, "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html {
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
}

body::before { display: none; }

button,
input,
textarea { font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; }

img { max-width: 100%; }

.site-nav,
main,
.site-footer,
.toast { position: relative; z-index: 1; }

.shell {
  width: min(1320px, calc(100% - 8vw));
  margin-inline: auto;
}

body > .site-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  min-height: 78px;
  padding: 10px 4vw;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  background: rgba(243, 239, 230, .96);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

body > .site-nav .brand > img {
  width: auto;
  height: 54px;
  max-width: 220px;
  object-fit: contain;
}

body > .site-nav .nav-links { gap: 30px; }

body > .site-nav .nav-links a {
  margin: 0;
  padding: 10px 0;
  color: #5d5e58;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .03em;
  text-decoration: none;
}

body > .site-nav .nav-links a:hover,
body > .site-nav .nav-links a:focus-visible,
body > .site-nav .nav-links a[aria-current="page"] { color: var(--blue); }

body > .site-nav .nav-links a[aria-current="page"]::after {
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--blue);
}

body > .site-nav .nav-links .nav-cta {
  padding: 11px 18px;
  color: var(--red) !important;
  border: 1px solid var(--red);
  border-radius: 0;
  background: transparent;
  font-weight: 760;
}

:focus-visible {
  outline: 2px solid var(--blue) !important;
  outline-offset: 4px !important;
}

h1,
h2,
h3,
.card-title,
.reference-body h3 {
  font-family: var(--serif);
  font-weight: 500;
}

.hero {
  min-height: 700px;
  display: grid;
  grid-template-columns: minmax(360px, .74fr) minmax(540px, 1.26fr);
  align-items: center;
  gap: clamp(52px, 7vw, 112px);
  padding: clamp(78px, 8vw, 126px) 0 clamp(88px, 9vw, 142px);
  border-bottom: 1px solid var(--line);
  overflow: visible;
}

.hero-copy { position: relative; z-index: 2; }

.hero-index,
.section-index,
.participation-index {
  margin: 0 0 28px;
  color: var(--blue);
  font-family: var(--serif);
  font-size: 14px;
  font-style: italic;
  letter-spacing: .05em;
}

h1 {
  max-width: 660px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(82px, 8.1vw, 132px);
  line-height: .93;
  letter-spacing: -.07em;
}

.hero-intro {
  max-width: 430px;
  margin: 36px 0 0;
  padding-top: 20px;
  color: #4d514f;
  border-top: 1px solid var(--blue);
  font-size: 16px;
  line-height: 1.8;
}

.hero-random {
  min-height: 52px;
  margin-top: 28px;
  padding: 0 26px;
  color: #fff;
  border: 1px solid var(--blue);
  border-radius: 0;
  background: var(--blue);
  font-size: 14px;
  font-weight: 760;
  letter-spacing: .08em;
  cursor: pointer;
}

.hero-random:hover,
.hero-random:focus-visible { background: var(--blue-deep); }

.hero-random .spark { display: none; }

.hero-art {
  position: relative;
  margin: 0;
  transform: none;
}

.hero-art img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.reference-section,
.gallery-section,
.source-notice { border-color: var(--line); }

.reference-section { padding: 86px 0 124px; }

.reference-head {
  display: grid;
  grid-template-columns: minmax(120px, .18fr) minmax(360px, .92fr) minmax(270px, .62fr);
  align-items: end;
  gap: 32px;
  margin-bottom: 44px;
}

.reference-head .section-index { margin: 0 0 8px; }

.reference-head h2,
.gallery-title h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(48px, 5vw, 76px);
  line-height: 1.02;
  letter-spacing: -.055em;
}

.reference-head > p:last-child,
.gallery-title > p:last-child {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.78;
}

.project-selector {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0 0 34px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.project-choice {
  min-height: 82px;
  padding: 16px 22px;
  color: var(--ink);
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-family: var(--serif);
  font-size: 19px;
  text-align: left;
  cursor: pointer;
}

.project-choice:last-child { border-right: 0; }

.project-choice:hover { color: var(--blue); }

.project-choice[aria-pressed="true"] {
  color: #fff;
  background: var(--blue);
}

.reference-context {
  min-height: 70px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 36px;
  padding: 0 0 22px;
  border: 0;
}

.reference-context p {
  max-width: 840px;
  margin: 0;
  color: #4f514d;
  font-size: 14px;
  line-height: 1.72;
}

.reference-count {
  flex: 0 0 auto;
  color: var(--blue);
  font-family: var(--serif);
  font-size: 12px;
  font-style: italic;
  letter-spacing: .05em;
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 44px 28px;
}

.reference-card {
  min-width: 0;
  overflow: visible;
  color: var(--ink);
  border: 0;
  border-top: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: transform .25s ease;
}

.reference-card:hover { transform: translateY(-4px); box-shadow: none; }

.reference-image {
  position: relative;
  aspect-ratio: 5 / 4;
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #ddd7cb;
}

.reference-card.website-type .reference-image { aspect-ratio: 16 / 9; }

.reference-image::after {
  left: 16px;
  bottom: 14px;
  color: rgba(22, 23, 19, .45);
  font-family: var(--serif);
  font-size: 12px;
}

.reference-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: #ddd7cb;
  transition: transform .35s ease;
}

.reference-card:hover img { transform: scale(1.025); }
.reference-image img.image-error { opacity: 0; }

.reference-body { padding: 18px 0 0; }

.reference-source {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.reference-source span:last-child {
  color: var(--muted);
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0;
  text-transform: none;
}

.reference-body h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 27px;
  line-height: 1.12;
  letter-spacing: -.035em;
}

.reference-best {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.reference-observe {
  min-height: 64px;
  margin: 0 0 15px;
  padding-top: 13px;
  color: #454844;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.65;
}

.reference-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.reference-tags span {
  padding: 5px 8px;
  color: #555851;
  border: 1px solid #d4cec2;
  border-radius: 0;
  background: transparent;
  font-size: 10px;
}

.reference-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.reference-actions a {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 0;
  background: transparent;
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
}

.reference-actions a:first-child { color: #fff; background: var(--blue); }

.competitor-finder {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, .55fr) minmax(0, 1.45fr);
  gap: 38px;
  margin-top: 58px;
  padding: 30px 138px 30px 0;
  color: var(--ink);
  border: 0;
  border-top: 1px solid var(--blue);
  border-bottom: 1px solid var(--blue);
  border-radius: 0;
  background: transparent;
}

.competitor-finder::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 8px;
  width: 114px;
  height: 70px;
  background: url("/aesthetic/assets/paper-annual-v3/pen-illustration.png") center / contain no-repeat;
  transform: translateY(-50%);
  pointer-events: none;
}

.competitor-finder h3 {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 28px;
}

.competitor-finder > div:first-child p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.finder-content { display: grid; gap: 14px; }
.source-links,
.query-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.source-link,
.query-chip {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--surface);
  font-size: 11px;
  text-decoration: none;
}

.query-chip { color: var(--blue); cursor: pointer; }
.source-link:hover,
.query-chip:hover { border-color: var(--blue); }

.gallery-section {
  padding: 104px 0 122px;
  border-top: 1px solid var(--line);
}

.gallery-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(480px, 1.1fr);
  align-items: end;
  gap: 42px;
  margin-bottom: 34px;
}

.gallery-title .section-index { margin-bottom: 22px; }
.gallery-title > p:last-child { max-width: 620px; margin-top: 18px; }

.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.filter-button {
  min-height: 38px;
  padding: 0 13px;
  color: #4f514d;
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-size: 11px;
  cursor: pointer;
}

.filter-button:hover { color: var(--blue); border-color: var(--blue); }
.filter-button[aria-pressed="true"] { color: #fff; border-color: var(--blue); background: var(--blue); }

.hall-status {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
  padding: 0;
  color: var(--muted);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.hall-status span {
  color: var(--muted);
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 11px;
  letter-spacing: .08em;
}

.hall-status span:first-child { color: var(--blue); background: transparent; }

.style-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-flow: dense;
  align-items: start;
  gap: 52px 28px;
}

.style-card {
  min-width: 0;
  padding: 0;
  color: var(--ink);
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.style-card:nth-child(12n + 4) { grid-column: span 2; }
.style-card:nth-child(12n + 4) .card-art { aspect-ratio: 16 / 9; }

.card-art {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: block;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #ddd7cb;
  object-fit: cover;
  object-position: var(--art-focus, center);
  box-shadow: none;
  transition: transform .3s ease, box-shadow .3s ease;
}

.card-art.image-error { opacity: 0; }

.style-card:hover .card-art,
.style-card:focus-visible .card-art {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(55, 46, 33, .13);
}

.card-meta {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  padding: 15px 2px 0;
}

.card-number {
  color: var(--blue);
  font-family: var(--serif);
  font-size: 13px;
  font-style: italic;
}

.card-title {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: -.025em;
}

.card-en,
.card-work {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.card-en { font-family: var(--serif); font-style: italic; }

.card-keywords { display: flex; flex-wrap: wrap; gap: 6px; }
.card-keywords span { color: #555851; font-size: 10px; }
.card-keywords span:not(:last-child)::after { content: " · "; color: #9e978b; }
.card-arrow { display: none; }

.gallery-progress {
  min-height: 132px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: 56px;
  padding: 22px 132px 22px 28px;
  color: var(--blue);
  border: 1px solid var(--blue);
  background: url("/aesthetic/assets/paper-annual-v3/botanical-illustration.png") calc(100% - 28px) center / auto 108px no-repeat;
  font-size: 12px;
}

.gallery-progress[hidden] { display: none; }

.participation-panel {
  grid-template-columns: 90px minmax(0, 1fr) auto;
  align-items: end;
  gap: 28px;
  margin-top: 72px;
  padding: 42px 0;
  color: var(--ink);
  border: 0;
  border-top: 1px solid var(--blue);
  border-bottom: 1px solid var(--blue);
  background: transparent;
}

.participation-panel[hidden] { display: none; }
.participation-index { align-self: start; margin: 5px 0 0; }

.participation-panel h3 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 4.2vw, 66px);
  line-height: 1.03;
  letter-spacing: -.05em;
}

.participation-panel p {
  max-width: 650px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.participation-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }

.participation-actions button,
.recommend-actions button {
  min-height: 44px;
  padding: 0 18px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 0;
  background: transparent;
  font-size: 13px;
  font-weight: 740;
  cursor: pointer;
}

.participation-actions .primary-action,
.recommend-actions .primary-action { color: #fff; background: var(--blue); }

.participation-actions button:disabled,
.recommend-actions button:disabled { opacity: .58; cursor: wait; }

.participation-status {
  grid-column: 2 / -1;
  min-height: 18px;
  margin: -8px 0 0 !important;
  color: var(--blue) !important;
  font-size: 12px !important;
}

.source-notice {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, .55fr) minmax(0, 1.45fr);
  gap: 52px;
  padding: 52px 170px 88px 92px;
  border-top: 1px solid var(--line);
}

.source-notice::before,
.source-notice::after {
  content: "";
  position: absolute;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  pointer-events: none;
}

.source-notice::before {
  top: 42px;
  left: 18px;
  width: 53px;
  height: 57px;
  background-image: url("/aesthetic/assets/paper-annual-v3/privacy-lock.png");
}

.source-notice::after {
  top: 42px;
  right: 10px;
  width: 145px;
  height: 89px;
  background-image: url("/aesthetic/assets/paper-annual-v3/privacy-building.png");
}

.source-notice h3 {
  margin: 0;
  color: var(--blue);
  font-size: 30px;
  letter-spacing: -.035em;
}

.source-notice p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

dialog {
  position: fixed;
  inset: 50% auto auto 50%;
  z-index: 120;
  width: min(1180px, calc(100% - 48px));
  max-height: min(850px, calc(100dvh - 48px));
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--surface);
  box-shadow: 0 32px 90px rgba(35, 30, 24, .28);
  transform: translate(-50%, -50%);
}

dialog::backdrop { background: rgba(24, 24, 20, .76); backdrop-filter: blur(8px); }

.dialog-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(380px, .97fr);
  min-height: 680px;
  max-height: inherit;
}

.dialog-art {
  min-height: 680px;
  background-color: #d9d2c6;
  background-image: var(--art-image);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

.dialog-art.image-failed { color: #fff; background: var(--ink); }

.dialog-content {
  position: relative;
  display: flex;
  flex-direction: column;
  max-height: inherit;
  padding: 46px 44px 30px;
  overflow-y: auto;
  background: var(--surface);
}

.dialog-close,
.contribution-close {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--surface);
  cursor: pointer;
  font-size: 20px;
}

.dialog-close { position: absolute; top: 20px; right: 20px; }
.dialog-kicker { margin: 0 0 22px; color: var(--blue); font-size: 11px; font-weight: 800; letter-spacing: .16em; }

.dialog-content h2 {
  max-width: calc(100% - 52px);
  margin: 0 0 7px;
  color: var(--ink);
  font-size: clamp(38px, 4vw, 60px);
  line-height: 1.04;
  letter-spacing: -.05em;
}

.dialog-en {
  margin: 0 0 22px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 17px;
  font-style: italic;
}

.dialog-workline,
.dialog-description,
.use-line { color: #4e514c; }

.dialog-workline { margin: -7px 0 18px; font-size: 12px; line-height: 1.65; }
.dialog-description { margin: 0 0 20px; font-size: 15px; line-height: 1.82; }
.dialog-source-link { width: fit-content; margin: -4px 0 22px; color: var(--blue); font-size: 12px; font-weight: 750; text-underline-offset: 4px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.tag-list span { padding: 7px 10px; color: #4f514d; border: 1px solid var(--line); border-radius: 0; background: transparent; font-size: 11px; }

.use-line {
  margin: 0 0 24px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.65;
}

.use-line strong { color: var(--ink); }

.prompt-box {
  padding: 18px;
  border: 1px solid #afbccb;
  border-radius: 0;
  background: var(--surface-blue);
}

.prompt-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.prompt-head strong { font-size: 13px; }
.prompt-text { margin: 0; color: #484c4b; font-size: 12px; line-height: 1.72; }

.copy-button {
  min-height: 34px;
  padding: 0 12px;
  color: #fff;
  border: 1px solid var(--blue);
  border-radius: 0;
  background: var(--blue);
  font-size: 11px;
  font-weight: 740;
  cursor: pointer;
}

.dialog-nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 26px; }
.dialog-nav button { min-height: 40px; padding: 0 14px; color: var(--blue); border: 1px solid var(--blue); border-radius: 0; background: transparent; cursor: pointer; }
.dialog-nav button:hover { color: #fff; background: var(--blue); }

.contribution-dialog {
  width: min(620px, calc(100% - 36px));
  max-height: calc(100dvh - 36px);
  overflow-y: auto;
}

.contribution-inner { position: relative; padding: 42px; }
.contribution-close { position: absolute; top: 18px; right: 18px; }

.contribution-inner h2 {
  max-width: calc(100% - 58px);
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 46px);
  line-height: 1.08;
  letter-spacing: -.04em;
}

.contribution-intro { margin: 14px 0 28px; color: var(--muted); font-size: 13px; line-height: 1.72; }
.recommend-form { display: grid; gap: 20px; }
.recommend-field { display: grid; gap: 8px; }
.recommend-field > span { font-size: 13px; font-weight: 720; }
.recommend-field small { color: var(--muted); font-size: 11px; line-height: 1.55; }

.recommend-field input[type="url"],
.recommend-field textarea {
  width: 100%;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: #fff;
  outline: 0;
}

.recommend-field input[type="url"] { min-height: 48px; padding: 0 13px; }
.recommend-field textarea { min-height: 122px; padding: 12px 13px; resize: vertical; line-height: 1.65; }
.recommend-field input:focus,
.recommend-field textarea:focus { border-color: var(--blue); }

.image-choice {
  position: relative;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 13px;
  color: var(--ink);
  border: 1px dashed var(--line-strong);
  background: var(--surface-blue);
  font-size: 12px;
  cursor: pointer;
}

.image-choice input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.image-choice b { font-size: 12px; }
.image-choice em { overflow: hidden; color: var(--muted); font-style: normal; text-overflow: ellipsis; white-space: nowrap; }

.recommend-privacy { margin: 0; padding-top: 16px; color: var(--muted); border-top: 1px solid var(--line); font-size: 11px; line-height: 1.72; }
.recommend-error { min-height: 18px; margin: 0; color: #a33e35; font-size: 12px; line-height: 1.5; }
.recommend-actions { display: flex; justify-content: flex-end; gap: 10px; }
.recommend-success[hidden] { display: none; }
.recommend-success { padding: 48px 0 24px; }
.recommend-success strong { display: block; color: var(--blue); font-family: var(--serif); font-size: 34px; font-weight: 500; line-height: 1.2; }
.recommend-success p { margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 140;
  padding: 12px 18px;
  color: #fff;
  border-radius: 0;
  background: var(--blue);
  font-size: 13px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, .18);
  transform: translate(-50%, 18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

.site-footer {
  padding: 64px 4vw 58px;
  color: var(--muted);
  border-top: 1px solid var(--line-strong);
  background: var(--paper);
  text-align: center;
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 2;
}

.site-footer .f-brand {
  width: min(340px, 84vw);
  height: auto;
  display: block;
  margin: 0 auto 18px;
}

.site-footer p { margin: 0; }
.site-footer span { display: block; color: var(--blue); font-family: Georgia, serif; font-size: 10px; letter-spacing: .24em; }

@media (max-width: 1080px) {
  body > .site-nav .nav-links { gap: 18px; }
  body > .site-nav .nav-links a { font-size: 12px; }
  .hero { grid-template-columns: minmax(300px, .8fr) minmax(460px, 1.2fr); gap: 54px; }
  .reference-head { grid-template-columns: 110px minmax(340px, .9fr) minmax(230px, .6fr); }
  .gallery-head { grid-template-columns: 1fr; }
  .filters { justify-content: flex-start; }
}

@media (max-width: 860px) {
  body > .site-nav {
    position: sticky;
    min-height: 66px;
    padding: 8px 18px;
    background: rgba(243, 239, 230, .98);
  }

  body > .site-nav .brand > img { height: 48px; max-width: 178px; }
  .site-mobile-menu { color: var(--ink); }
  .site-mobile-menu > summary { min-width: 108px; color: var(--ink); border-color: var(--line-strong); border-radius: 0; }
  .site-mobile-current { display: block; color: var(--ink); }
  .site-mobile-menu > summary::after { color: var(--blue); }
  .site-mobile-panel { background: var(--paper); border-color: var(--line); box-shadow: 0 18px 30px rgba(42, 35, 26, .14); }
  .site-mobile-panel a { color: var(--muted); border-color: var(--line); }
  .site-mobile-panel a[aria-current="page"] { color: var(--blue); }
  .site-mobile-panel .nav-cta { color: #fff; border-color: var(--blue); border-radius: 0; background: var(--blue); }

  .shell { width: min(100% - 40px, 760px); }
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 48px; padding: 70px 0 88px; }
  h1 { font-size: clamp(82px, 16vw, 116px); }
  .hero-art { width: min(100%, 680px); justify-self: end; }
  .reference-head { grid-template-columns: 100px minmax(0, 1fr); }
  .reference-head > p:last-child { grid-column: 2; }
  .reference-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reference-grid .reference-card:nth-child(odd):last-child { grid-column: 1 / -1; }
  .competitor-finder { grid-template-columns: 1fr; }
  .style-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .style-card:nth-child(12n + 4) { grid-column: span 2; }
  .participation-panel { grid-template-columns: 72px minmax(0, 1fr); align-items: start; }
  .participation-actions { grid-column: 2; justify-content: flex-start; }
  .participation-status { grid-column: 2; }
  .source-notice { grid-template-columns: 1fr; gap: 20px; padding-right: 150px; }
  .dialog-layout { grid-template-columns: .9fr 1.1fr; }
  .dialog-art { min-height: 590px; }
  .dialog-content { padding: 38px 28px 26px; }
}

@media (max-width: 620px) {
  html { scroll-behavior: auto; }
  .shell { width: calc(100% - 32px); }
  body > .site-nav { padding-right: 14px; padding-left: 14px; }
  body > .site-nav .brand > img { width: 138px; height: auto; max-width: 44vw; object-fit: contain; }

  .hero { gap: 36px; padding: 52px 0 70px; }
  .hero-index { margin-bottom: 20px; }
  h1 { font-size: clamp(68px, 22vw, 92px); line-height: .95; }
  .hero-intro { margin-top: 28px; font-size: 14px; }
  .hero-random { width: 100%; margin-top: 22px; }
  .hero-art { width: calc(100% - 12px); }
  .hero-art img { height: auto; }

  .reference-section { padding: 62px 0 84px; }
  .reference-head { grid-template-columns: 1fr; gap: 12px; margin-bottom: 28px; }
  .reference-head .section-index,
  .reference-head > p:last-child { grid-column: auto; }
  .reference-head h2,
  .gallery-title h2 { font-size: 46px; line-height: 1.04; }
  .reference-head > p:last-child { font-size: 13px; }
  .project-selector { display: flex; overflow-x: auto; scrollbar-width: none; }
  .project-selector::-webkit-scrollbar { display: none; }
  .project-choice { min-width: 190px; flex: 0 0 auto; border-right: 1px solid var(--line); }
  .reference-context { align-items: flex-start; flex-direction: column; gap: 8px; }
  .reference-grid { grid-template-columns: 1fr; gap: 48px; }
  .reference-grid .reference-card:nth-child(odd):last-child { grid-column: auto; }
  .competitor-finder { margin-top: 50px; padding: 24px 0 112px; }
  .competitor-finder::after { top: auto; right: 0; bottom: 20px; transform: none; }
  .source-links,
  .query-chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .source-link,
  .query-chip { flex: 0 0 auto; }

  .gallery-section { padding: 76px 0 90px; }
  .gallery-head { gap: 24px; margin-bottom: 26px; }
  .gallery-title .section-index { margin-bottom: 18px; }
  .filters { flex-wrap: nowrap; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; }
  .filter-button { flex: 0 0 auto; }
  .hall-status { align-items: flex-start; flex-direction: column; justify-content: center; gap: 4px; padding: 12px 0; }
  .style-grid { grid-template-columns: 1fr; gap: 42px; }
  .style-card:nth-child(12n + 4) { grid-column: span 1; }
  .style-card:nth-child(12n + 4) .card-art { aspect-ratio: 4 / 3; }
  .card-title { font-size: 22px; }
  .gallery-progress { min-height: 126px; align-items: flex-start; justify-content: flex-start; padding: 18px 104px 18px 16px; background-position: calc(100% - 14px) center; background-size: auto 94px; }
  .participation-panel { grid-template-columns: 1fr; gap: 20px; margin-top: 58px; padding: 34px 0; }
  .participation-index,
  .participation-actions,
  .participation-status { grid-column: auto; }
  .participation-panel h3 { font-size: 48px; }
  .participation-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .participation-actions button { width: 100%; padding: 0 10px; }
  .source-notice { padding: 108px 0 66px; }
  .source-notice::before { top: 34px; left: 0; }
  .source-notice::after { top: 28px; right: 0; width: 118px; }
  .source-notice h3 { font-size: 28px; }

  dialog {
    inset: 0;
    width: 100%;
    max-width: none;
    height: 100dvh;
    max-height: 100dvh;
    border: 0;
    transform: none;
  }

  .dialog-layout { height: 100%; min-height: 0; max-height: 100%; display: block; overflow-y: auto; }
  .dialog-art { min-height: 0; aspect-ratio: 1 / 1; }
  .dialog-content { max-height: none; padding: 32px 20px 30px; overflow: visible; }
  .dialog-close { position: fixed; top: 14px; right: 14px; z-index: 4; background: rgba(251, 248, 240, .96); }
  .dialog-content h2 { max-width: calc(100% - 52px); font-size: 42px; }
  .dialog-nav { margin-top: 8px; }

  .contribution-dialog { width: 100%; height: 100dvh; max-height: 100dvh; }
  .contribution-inner { min-height: 100%; padding: 32px 20px calc(30px + env(safe-area-inset-bottom)); }
  .contribution-close { position: fixed; top: 14px; right: 14px; z-index: 4; background: rgba(251, 248, 240, .96); }
  .recommend-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .recommend-actions button { width: 100%; padding: 0 10px; }
  .image-choice { align-items: flex-start; flex-direction: column; }

  .site-footer { padding: 54px 20px 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}