:root {
  --paper:#f6efe2;
  --paper-deep:#eee2ce;
  --white:#fffaf1;
  --ink:#302723;
  --muted:#716252;
  --red:#6b2025;
  --red-dark:#471b21;
  --gold:#96743e;
  --gold-text:#785b30;
  --rule:#d5c3a4;
  --container:1100px;
  --header-h:68px;
  --serif:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;
  --sans:system-ui,-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  --hero-image:url("images/hero.jpg");
}

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

html {
  scroll-behavior:auto;
}

body {
  margin:0;
  color:var(--ink);
  background:var(--paper);
  font:16px/1.85 var(--sans);
  -webkit-font-smoothing:antialiased;
}

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

img {
  height:auto;
}

button, input, select {
  font:inherit;
}

a {
  color:inherit;
  text-underline-offset:.3em;
}

button, summary {
  cursor:pointer;
}

button {
  color:inherit;
}

h1, h2, h3, p, figure, dl {
  margin:0;
}

h1, h2, h3 {
  font-family:var(--serif);
  font-weight:500;
}

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

a:focus-visible, button:focus-visible, summary:focus-visible, select:focus-visible {
  outline:3px solid #ac803c;
  outline-offset:5px;
}

[hidden] {
  display:none!important;
}

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

.skip-link {
  position:fixed;
  top:-80px;
  left:16px;
  padding:10px 18px;
  background:var(--ink);
  color:#fff;
  z-index:2000;
}

.skip-link:focus {
  top:8px;
}

.container {
  width:min(calc(100% - 80px),var(--container));
  margin-inline:auto;
}

section, [id] {
  scroll-margin-top:calc(var(--header-h) + 18px);
}

.section {
  padding:76px 0;
}

.paper {
  background-image:repeating-linear-gradient(0deg,transparent 0 3px,#92734104 3px 4px);
}

.tone-deep {
  background:var(--paper-deep);
}

.eyebrow {
  font:12px/1.6 Georgia,serif;
  letter-spacing:.18em;
  color:var(--gold);
}

.kicker {
  display:flex;
  gap:14px;
  align-items:center;
  margin-bottom:22px;
}

.kicker::before {
  content:"";
  width:30px;
  height:1px;
  background:currentColor;
}

.kicker span {
  font:13px/1.5 var(--serif);
  letter-spacing:.09em;
}

.section-title {
  font-size:clamp(25px,3vw,36px);
  line-height:1.65;
  letter-spacing:.09em;
}

.section-lead {
  margin-top:16px;
  color:var(--muted);
  font-size:15px;
  max-width:46em;
}

.section-heading {
  margin-bottom:32px;
}

.section-heading.split {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
}

.note {
  font-size:13px;
  color:var(--muted);
  line-height:1.9;
}

.button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:22px;
  min-height:48px;
  padding:11px 24px;
  border:1px solid var(--red);
  border-radius:2px;
  color:var(--red);
  text-decoration:none;
  font-size:14px;
  font-weight:600;
  background:transparent;
}

.button::after {
  content:"→";
}

.button[target="_blank"]::after {
  content:"↗";
}

.button:hover {
  background:var(--red);
  color:var(--white);
}

.button.primary {
  background:var(--red);
  color:var(--white);
}

.button.primary:hover {
  background:var(--red-dark);
}

.text-link {
  display:inline-block;
  padding:5px 0;
  color:var(--red);
  font-size:13px;
}

.badge {
  display:inline-block;
  padding:2px 10px;
  border:1px solid var(--rule);
  font-size:11px;
  color:var(--muted);
  letter-spacing:.08em;
}

.rule {
  border-top:1px solid var(--rule);
}

.site-header {
  position:sticky;
  top:0;
  z-index:900;
  background:#fffaf1f5;
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--rule);
}

.site-header-inner {
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}

.logo {
  text-decoration:none;
  white-space:nowrap;
  font:21px/1.2 var(--serif);
  letter-spacing:.02em;
}

.logo small {
  font:12px Georgia,serif;
  color:var(--red);
  border-left:1px solid var(--gold);
  margin-left:10px;
  padding-left:10px;
}

.nav-desktop {
  display:flex;
  align-items:center;
  gap:22px;
}

.nav-desktop a {
  font-size:13px;
  text-decoration:none;
  padding:10px 0;
}

.nav-desktop a:hover {
  text-decoration:underline;
}

.menu-toggle {
  display:none;
  border:1px solid var(--rule);
  background:var(--white);
  border-radius:2px;
  min-width:48px;
  min-height:44px;
  font-size:12px;
  padding:8px;
}

.nav-panel {
  padding:12px 20px 22px;
  background:var(--white);
  border-top:1px solid var(--rule);
}

.nav-panel nav {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4px 20px;
}

.nav-panel a {
  display:block;
  padding:10px 0;
  font-size:14px;
  text-decoration:none;
  border-bottom:1px solid var(--rule);
}

.nav-panel a:hover {
  color:var(--red);
}

@supports (background: image-set(url("x") 1x)) {
:root {
  --hero-image:image-set(url("images/hero.jpg") 1x,url("images/hero_2560_1440.jpg") 2x);
}

@media(min-width:900px) {
:root {
  --hero-image:image-set(url("images/hero_2560_1440.jpg") 1x,url("images/hero.jpg") 2x);
}
}
}

.hero {
  position:relative;
  width:100%;
  aspect-ratio:16 / 9;
  background:var(--hero-image,url("images/hero.jpg")) center / contain no-repeat;
}

.hero::before {
  content:none;
}

.hero-content {
  position:relative;
  text-align:center;
  max-width:900px;
}

.event-info {
  padding:38px 0 25px;
  border-top:4px solid var(--red);
}

.event-info__grid {
  display:grid;
  grid-template-columns:1fr auto;
  gap:35px;
  align-items:center;
}

.event-info h2 {
  font-size:13px;
  letter-spacing:.12em;
  color:var(--red);
  margin-bottom:14px;
}

.event-date {
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:12px;
  font-family:Georgia,var(--serif);
}

.event-date__year {
  font-size:23px;
}

.event-date time {
  font-size:clamp(38px,4.5vw,55px);
  line-height:1.2;
  white-space:nowrap;
}

.event-date small {
  font:13px var(--serif);
  margin-left:5px;
}

.event-date__line {
  width:28px;
  height:1px;
  background:var(--gold);
  align-self:center;
}

.event-place {
  margin-top:14px;
  font-size:14px;
}

.fee-block {
  border-left:1px solid var(--rule);
  padding-left:35px;
  min-width:225px;
}

.fee-block>span {
  display:block;
  font-size:12px;
  color:var(--muted);
}

.fee-block strong {
  font:42px/1.5 Georgia,serif;
  color:var(--red);
}

.fee-block strong small {
  font:14px var(--serif);
  margin-left:5px;
}

.fee-block p {
  font-size:12px;
  color:var(--muted);
}

.section-index {
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:28px;
  border-top:1px solid var(--rule);
  margin-top:25px;
  padding-top:18px;
}

.section-index a {
  text-decoration:none;
  font-size:13px;
  padding:6px 0;
}

.section-index a:hover {
  color:var(--red);
}

.section-index span {
  margin-right:8px;
  font:12px Georgia,serif;
  color:var(--gold);
}

.story-section {
  position:relative;
  overflow:hidden;
  padding:66px 0;
  color:var(--white);
  background:radial-gradient(ellipse at 20% 45%,#91533530,transparent 65%),var(--red-dark);
}

.story-section::after {
  content:"";
  position:absolute;
  inset:14px;
  border:1px solid #c8a46a45;
  pointer-events:none;
}

.story-section .kicker {
  justify-content:center;
  color:#d9bd88;
}

.story-layout {
  display:grid;
  grid-template-columns:.85fr 1fr;
  gap:85px;
  align-items:center;
  margin-top:30px;
}

.letter-scene {
  position:relative;
  max-width:390px;
  width:100%;
  padding:22px;
  margin-inline:auto;
}

.letter-scene::before {
  content:"";
  position:absolute;
  inset:35px 12px 16px 35px;
  background:#bda274;
  transform:rotate(5deg);
  opacity:.8;
}

.letter-paper {
  position:relative;
  min-height:310px;
  padding:38px;
  background:#eee0c5;
  box-shadow:0 18px 30px #21061040;
  transform:rotate(-5deg);
  background-image:radial-gradient(ellipse at top right,#ae7e4826,transparent 65%),repeating-linear-gradient(90deg,transparent 0 35px,#9273410a 35px 36px);
}



.letter-caption {
  position:relative;
  text-align:center;
  font-size:10px;
  letter-spacing:.12em;
  color:#d8c6a8;
  margin-top:28px;
}

.story-copy h2 {
  font-size:clamp(26px,2.8vw,35px);
  line-height:1.8;
  letter-spacing:.1em;
  margin-bottom:22px;
}

.story-copy p {
  font:16px/2.2 var(--serif);
  letter-spacing:.04em;
  margin-top:17px;
}

.story-copy .story-invitation {
  color:#e8c996;
  font-size:18px;
  margin-top:25px;
}

.about-layout {
  display:grid;
  grid-template-columns:1fr 1.08fr;
  gap:70px;
  align-items:start;
}

.about-intro h2 em {
  font-style:normal;
  color:var(--red);
}

.about-intro p {
  margin-top:18px;
  font-size:15px;
  line-height:2;
}

.about-intro .small-tag {
  margin-top:25px;
  display:inline-block;
  border-block:1px solid var(--rule);
  padding:8px 0;
  color:var(--red);
  font:15px var(--serif);
  letter-spacing:.08em;
}

.event-details {
  border-top:2px solid var(--gold);
}

.event-details>div {
  display:grid;
  grid-template-columns:92px 1fr;
  gap:18px;
  border-bottom:1px solid var(--rule);
  padding:14px 0;
  font-size:14px;
}

.event-details dt {
  color:var(--red);
  font-weight:600;
}

.event-details dd {
  margin:0;
}

.event-details small {
  display:block;
  color:var(--muted);
  font-size:12px;
}

.course-note {
  padding:15px 20px;
  margin-top:25px;
  background:var(--paper-deep);
  border-left:3px solid var(--gold);
  font-size:14px;
  line-height:1.9;
}

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

.highlight img {
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
}

.highlight .number {
  display:block;
  font:12px Georgia,serif;
  color:var(--gold-text);
  margin:18px 0 7px;
  letter-spacing:.12em;
}

.highlight h3 {
  font-size:23px;
  line-height:1.6;
}

.highlight p {
  font-size:14px;
  color:var(--muted);
  line-height:1.95;
  margin-top:12px;
}

.steps {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  padding:0;
  list-style:none;
  margin:0;
}

.step {
  border-top:1px solid var(--gold);
  padding-top:19px;
}

.step-label {
  font:12px Georgia,serif;
  color:var(--gold-text);
  letter-spacing:.1em;
}

.step h3 {
  font-size:20px;
  line-height:1.7;
  margin:12px 0;
}

.step p {
  font-size:14px;
  color:var(--muted);
}

.kit-panel {
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  border:1px solid var(--gold);
  background:var(--white);
}

.kit-intro {
  padding:34px 40px;
  background:var(--red);
  color:var(--white);
}

.kit-intro .eyebrow {
  color:#dbc28f;
}

.kit-intro h2 {
  font-size:30px;
  margin:12px 0;
}

.kit-price {
  font:60px/1.4 Georgia,serif;
}

.kit-price small {
  font:17px var(--serif);
}

.kit-intro .note {
  color:#e7d7c8;
}

.kit-content {
  padding:32px 38px;
}

.kit-content h3 {
  font-size:21px;
  margin-bottom:12px;
}

.kit-content p {
  font-size:14px;
}

.kit-list {
  display:flex;
  flex-wrap:wrap;
  gap:7px 20px;
  margin:13px 0 10px;
  padding:0;
  list-style:none;
  font-size:14px;
}

.kit-list li::before {
  content:"・";
  color:var(--gold);
}

.sales-status {
  border-top:1px solid var(--rule);
  padding-top:18px;
  margin-top:18px;
}

.sales-status strong {
  color:var(--red);
}

.news-section {
  padding:45px 0;
}

.news-layout {
  display:grid;
  grid-template-columns:240px 1fr;
  gap:40px;
  align-items:center;
}

.news-layout .kicker {
  margin-bottom:10px;
}

.news-empty {
  padding:24px 0;
  border-block:1px solid var(--rule);
  font-size:14px;
}

.news-list {
  padding:0;
  margin:0;
  list-style:none;
}

.news-item {
  display:grid;
  grid-template-columns:110px 1fr;
  gap:15px;
  padding:20px 0;
  border-bottom:1px solid var(--rule);
  font-size:14px;
}

.news-item time {
  color:var(--muted);
  font-size:12px;
}

.practical-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
}

.practical-grid .section-title {
  font-size:28px;
}

.accordion {
  border-bottom:1px solid var(--rule);
}

.accordion:first-of-type {
  border-top:1px solid var(--rule);
}

.accordion summary {
  padding:17px 30px 17px 0;
  list-style:none;
  position:relative;
  font-size:14px;
  font-weight:600;
}

.accordion summary::after {
  content:"＋";
  position:absolute;
  right:0;
  top:17px;
  color:var(--gold);
}

.accordion[open] summary::after {
  content:"−";
}

summary::-webkit-details-marker {
  display:none;
}

.accordion-body {
  padding:0 0 20px;
  color:var(--muted);
  font-size:14px;
}

.accordion-body p+p {
  margin-top:12px;
}

.accordion-body a {
  color:var(--red);
}

.care-list {
  padding-left:1.2em;
  color:var(--muted);
  font-size:14px;
  margin:0;
}

.care-list li {
  padding-bottom:10px;
}

.practical-grid .course-note {
  padding:14px 16px;
  font-size:13px;
  margin-top:0;
  margin-bottom:20px;
}

.site-footer {
  background:#342724;
  color:#eadfcf;
  padding:40px 0 24px;
}

.footer-brand {
  font:22px var(--serif);
  letter-spacing:.06em;
}

.footer-subtitle {
  font:15px var(--serif);
  margin-top:12px;
  color:#d7be91;
}

.footer-bottom {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  border-top:1px solid #ffffff23;
  padding-top:20px;
  margin-top:30px;
  font-size:11px;
  color:#c7b6a3;
}

.footer-bottom a {
  font-size:12px;
  min-height:40px;
  display:inline-flex;
  align-items:center;
}

.footer-links {
  display:flex;
  gap:22px;
}

.mobile-shortcuts {
  display:none;
}

.back-link {
  display:inline-block;
  padding:12px 0;
  font-size:13px;
  color:var(--red);
}

@media(min-width:901px) {
.nav-panel {
  display:none!important;
}
}

@media(max-width:1000px) {
.nav-desktop {
  gap:15px;
}

.nav-desktop a {
  font-size:12px;
}

.story-layout {
  gap:45px;
}

.about-layout {
  gap:38px;
}

.practical-grid {
  gap:35px;
}
}

@media(max-width:900px) {
.nav-desktop {
  display:none;
}

.js .menu-toggle {
  display:block;
}

.no-js-nav {
  display:block;
}

.container {
  width:calc(100% - 48px);
}

.event-info__grid {
  gap:24px;
}

.fee-block {
  min-width:180px;
  padding-left:24px;
}

.event-date__year {
  width:100%;
  font-size:19px;
}

.event-date time {
  font-size:42px;
}

.story-copy h2 {
  font-size:28px;
}

.story-copy p {
  font-size:15px;
}

.letter-paper {
  padding:25px;
}

.section-title {
  font-size:29px;
}

.steps {
  grid-template-columns:1fr 1fr;
  gap:25px;
}

.highlight h3 {
  font-size:20px;
}

.kit-intro {
  padding:30px;
}

.kit-content {
  padding:30px;
}

.practical-grid {
  grid-template-columns:1fr 1fr;
}
}

@media(max-width:600px) {
:root {
  --header-h:60px;
}

.container {
  width:calc(100% - 36px);
}

body {
  font-size:15px;
}

.section {
  padding:44px 0;
}

.logo {
  font-size:17px;
}

.logo small {
  font-size:11px;
  margin-left:7px;
  padding-left:7px;
}

.site-header-inner {
  gap:10px;
}

.section-title {
  font-size:27px;
  letter-spacing:.045em;
}

.kicker {
  margin-bottom:16px;
  font-size:11px;
  gap:12px;
}

.kicker span {
  font-size:12px;
}

.section-lead {
  font-size:14px;
  margin-top:12px;
}

.section-heading {
  margin-bottom:24px;
}

.section-heading.split {
  display:block;
}

.section-heading.split .note {
  margin-top:12px;
}

.button {
  font-size:13px;
  padding:10px 18px;
  gap:15px;
}

.event-info {
  padding:24px 0 15px;
}

.event-info__grid {
  grid-template-columns:1fr;
  gap:18px;
}

.event-info h2 {
  font-size:11px;
  margin-bottom:10px;
}

.event-date {
  gap:10px;
}

.event-date__year {
  width:auto;
  font-size:17px;
}

.event-date time {
  font-size:clamp(29px,8.6vw,37px);
}

.event-date small {
  font-size:11px;
  margin-left:3px;
}

.event-date__line {
  width:18px;
}

.event-place {
  font-size:12px;
  margin-top:10px;
}

.fee-block {
  border-left:0;
  border-top:1px solid var(--rule);
  padding:12px 0 0;
  display:grid;
  grid-template-columns:1fr auto;
  gap:0 12px;
  align-items:center;
}

.fee-block strong {
  font-size:30px;
  grid-column:2;
  grid-row:1/3;
}

.fee-block strong small {
  font-size:12px;
}

.fee-block>span {
  font-size:11px;
}

.fee-block p {
  font-size:11px;
}

.section-index {
  margin-top:18px;
  padding-top:12px;
  gap:18px;
}

.section-index a {
  font-size:12px;
}

.section-index span {
  display:none;
}

.story-section {
  padding:34px 0 38px;
}

.story-section::after {
  inset:8px;
}

.story-layout {
  grid-template-columns:1fr;
  gap:12px;
  margin-top:18px;
}

.letter-scene {
  max-width:240px;
  padding:9px 22px;
}

.letter-scene::before {
  inset:16px 14px 10px 28px;
}

.letter-paper {
  min-height:0;
  height:130px;
  padding:19px 30px;
}



.letter-caption {
  display:none;
}

.story-copy {
  padding:14px 9px 0;
}

.story-copy h2 {
  font-size:25px;
  line-height:1.65;
  letter-spacing:.065em;
  margin-bottom:17px;
}

.story-copy p {
  font-size:15px;
  line-height:2;
  margin-top:13px;
  letter-spacing:0;
}

.story-copy p br {
  display:none;
}

.story-copy .story-invitation {
  font-size:16px;
  margin-top:18px;
}

.about-layout {
  grid-template-columns:1fr;
  gap:25px;
}

.about-intro p {
  font-size:14px;
  margin-top:13px;
}

.about-intro .small-tag {
  margin-top:18px;
  font-size:14px;
}

.event-details>div {
  grid-template-columns:80px 1fr;
  gap:12px;
  padding:11px 0;
  font-size:13px;
}

.course-note {
  font-size:13px;
  padding:12px 15px;
  margin-top:18px;
}

.highlights-grid {
  grid-template-columns:1fr;
  gap:26px;
}

.highlight {
  display:grid;
  grid-template-columns:105px 1fr;
  gap:16px;
  align-items:start;
}

.highlight img {
  aspect-ratio:3/4;
  height:140px;
}

.highlight .number {
  margin:0 0 4px;
  font-size:10px;
}

.highlight h3 {
  font-size:20px;
  line-height:1.5;
}

.highlight p {
  font-size:13px;
  line-height:1.8;
  margin-top:8px;
}

.steps {
  gap:20px 18px;
}

.step {
  padding-top:13px;
}

.step h3 {
  font-size:18px;
  line-height:1.6;
  margin:8px 0;
}

.step p {
  font-size:13px;
  line-height:1.8;
}

.kit-panel {
  grid-template-columns:1fr;
}

.kit-intro {
  padding:24px;
  position:relative;
}

.kit-intro h2 {
  font-size:25px;
  margin:7px 0;
}

.kit-price {
  font-size:45px;
}

.kit-content {
  padding:24px;
}

.kit-list {
  font-size:13px;
  gap:5px 14px;
}

.kit-content h3 {
  font-size:20px;
}

.news-section {
  padding:32px 0;
}

.news-layout {
  grid-template-columns:1fr;
  gap:18px;
}

.news-empty {
  font-size:13px;
  padding:18px 0;
}

.news-item {
  grid-template-columns:1fr;
  gap:5px;
}

.practical-grid {
  grid-template-columns:1fr;
  gap:38px;
}

.accordion summary {
  font-size:14px;
  padding-block:16px;
}

.accordion-body {
  font-size:14px;
}

.care-list {
  font-size:13px;
}

.site-footer {
  padding:30px 0 20px;
}

.footer-brand {
  font-size:21px;
}

.footer-bottom {
  display:block;
  margin-top:23px;
  font-size:10px;
}

.footer-links {
  margin-bottom:12px;
}
}

@media(prefers-reduced-motion:reduce) {
html {
  scroll-behavior:auto!important;
}

*, *::before, *::after {
  animation:none!important;
  transition:none!important;
}
}

@media print {
.site-header {
  position:static;
}

.menu-toggle, .nav-panel {
  display:none!important;
}

body {
  -webkit-print-color-adjust:exact;
  print-color-adjust:exact;
}

details>* {
  display:block!important;
}

.section {
  break-inside:avoid;
}
}
/* Final revision: decorative abstract ink, two access cards, official credits. */


.access-place { margin:-8px 0 28px; color:var(--muted); font-size:15px; }
.access-cards { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px; }
.access-card { display:flex; flex-direction:column; background:var(--white); border-top:2px solid var(--gold); padding:28px; }
.access-card h3 { font-size:23px; margin:0 0 14px; }
.access-card p { font-size:14px; }
.access-card .note { font-size:12px; margin:12px 0 24px; }
.access-button { margin-top:auto; width:100%; display:flex; flex-wrap:wrap; justify-content:space-between; gap:6px 12px; min-height:58px; }
.access-button small { font:12px var(--sans); }
.footer-top { display:grid; grid-template-columns:minmax(220px,.8fr) minmax(0,1.7fr); gap:35px; align-items:start; }
.footer-info { min-width:0; font-size:13px; color:#eadfcf; }
.organizer-list { margin:0; }
.organizer-list>div { display:grid; grid-template-columns:3em minmax(0,1fr); gap:14px; padding:5px 0; }
.organizer-list dt { color:#d7be91; font-weight:400; }
.organizer-list dd { margin:0; font-size:13px; line-height:1.9; overflow-wrap:anywhere; }
@media(max-width:900px) { .footer-top { grid-template-columns:1fr; gap:24px; } }
@media(max-width:600px) {  .access-cards { grid-template-columns:1fr; gap:20px; } .access-card { padding:23px; } .access-place { font-size:14px; margin-bottom:22px; } .organizer-list>div { gap:10px; } }

.org-name { display:inline-block; max-width:100%; }
@media(max-width:600px) { .org-name { display:block; } }

/* Poster-derived letter texture: decorative, no embedded text. */
.letter-paper { padding:0; height:326px; min-height:0; background:none; overflow:hidden; }
.letter-texture { display:block; width:100%; height:100%; object-fit:fill; }
@media(max-width:600px) { .letter-paper { height:150px; } }



/* =========================================================
 * 2026 collaboration products / 2026年版コラボ商品
 * QR URL: https://www.design-c.co.jp/asuke_nazomeguri2026/#collaboration
 * ========================================================= */
.collab-section {
  background: var(--paper);
  border-top: 1px solid var(--rule);
}
.collab-section .section-heading { margin-bottom: 34px; }
.collab-head-break { display: none; }
.collab-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px 22px;
}
.collab-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--rule);
  box-shadow: 0 5px 18px rgba(65, 36, 21, .045);
}
.collab-card__visual { position: relative; overflow: hidden; }
.collab-card__visual img {
  width: 100%; aspect-ratio: 3 / 2; object-fit: cover;
}
.collab-card__mapno {
  position: absolute;
  left: 12px; bottom: 12px;
  padding: 4px 10px;
  background: rgba(255, 250, 241, .94);
  color: var(--red);
  font: 12px/1.55 var(--sans);
  letter-spacing: .04em;
}
.collab-card__content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 22px 24px;
}
.collab-card__shop { font-size: 13px; color: var(--gold-text); font-weight: 600; letter-spacing: .03em; }
.collab-card__product { font-size: 23px; line-height: 1.5; color: var(--red); margin: 5px 0 10px; letter-spacing: .035em; }
.collab-card__chips { display: flex; flex-wrap: wrap; gap: 6px; min-height: 26px; margin-bottom: 12px; align-items: flex-start; }
.collab-chip {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid #ddc8ab;
  background: #f6eddf;
  color: var(--red);
  font-size: 11px;
  line-height: 1.7;
}
.collab-chip--date { background: var(--red); border-color: var(--red); color: var(--white); }
.collab-chip--outline { background: transparent; }
.collab-card__text { color: var(--ink); font-size: 14px; line-height: 1.9; margin-bottom: 22px; }
.collab-card__details { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--rule); }
.collab-card__details>div { display: grid; grid-template-columns: 5.4em minmax(0, 1fr); gap: 10px; margin: 5px 0; }
.collab-card__details dt { font-size: 12px; color: var(--muted); }
.collab-card__details dd { margin: 0; font-size: 12px; line-height: 1.65; overflow-wrap: anywhere; }
.collab-card__details a { text-decoration-thickness: 1px; }
.collab-card__note { color: var(--muted); font-size: 11px; line-height: 1.6; margin-top: 7px; }
.collab-card:last-child:nth-child(3n+1) { grid-column: 2; }
.collab-section__notice { color: var(--muted); font-size: 13px; line-height: 1.8; margin-top: 24px; }
@media (max-width: 1000px) {
  .collab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .collab-card:last-child:nth-child(3n+1) { grid-column: auto; }
  .collab-card:last-child:nth-child(2n+1) { grid-column: 1 / -1; width: calc((100% - 22px) / 2); justify-self: center; }
}
@media (max-width: 600px) {
  .collab-section .section-heading { margin-bottom: 22px; }
  .collab-head-break { display: block; }
  .collab-card:last-child:nth-child(2n+1) { grid-column: auto; width: auto; }
  .collab-grid { grid-template-columns: 1fr; gap: 20px; }
  .collab-card__content { padding: 19px 18px 20px; }
  .collab-card__product { font-size: 22px; }
  .collab-card__text { font-size: 14px; margin-bottom: 15px; }
  .collab-card__details>div { grid-template-columns: 5.2em minmax(0, 1fr); }
  .collab-section__notice { font-size: 12px; }
}

/* コラボ商品：7店舗目の横にメッセージを表示 */
.collab-message {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 45px;
  background: var(--red-dark);
  color: var(--white);
  border: 1px solid var(--gold);
  position: relative;
}

.collab-message::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(219,194,143,.3);
  pointer-events: none;
}

.collab-message__eyebrow {
  color: #dfc38e;
  font: 12px Georgia, serif;
  letter-spacing: .18em;
}

.collab-message h3 {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.6;
  margin: 18px 0;
}

.collab-message p:not(.collab-message__eyebrow) {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 2.1;
}

/* タブレット表示 */
@media (min-width: 601px) and (max-width: 1000px) {
  .collab-grid > .collab-card:nth-child(7) {
    grid-column: 1 / -1;
    width: calc((100% - 22px) / 2);
    justify-self: center;
  }

  .collab-message {
    grid-column: 1 / -1;
    min-height: 240px;
  }
}

/* スマートフォン表示 */
@media (max-width: 600px) {
  .collab-message {
    grid-column: auto;
    padding: 32px 26px;
    min-height: 230px;
  }

  .collab-message h3 {
    font-size: 27px;
  }

  .collab-message p:not(.collab-message__eyebrow) {
    font-size: 15px;
  }
}



/* 参加キット：画像と説明文 */
.kit-items-summary {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: center;
  gap: 20px;
  margin: 14px 0 20px;
}

.kit-items-summary img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.kit-items-summary p {
  font-size: 14px;
  line-height: 1.9;
}

/* スマートフォン */
@media (max-width: 600px) {
  .kit-items-summary {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 12px;
  }

  .kit-items-summary p {
    font-size: 13px;
    line-height: 1.8;
  }
}