/* ==========================================================================
   WA EXHIBITION — responsive stylesheet
   Mobile-first. Tablet & Desktop share the PC layout from 768px up.
   ========================================================================== */

:root {
  --c-ink: #1a1a1a;
  --c-ink-soft: #333333;
  --c-white: #ffffff;
  --c-concept-base: #ccd5d9;
  --c-info-bg: #e8edf0;
  --c-onlineshop-bg: #ffffff;
  --c-contact-bg: #e1e9ec;
  --c-button: #55666e;
  --c-button-dark: #3d4a50;
  --c-button-shadow: #363e40;
  --c-watermark: #d8dee1;
  --c-eyebrow: #9aa4a8;
  --c-border: #c9d0d3;
  --c-note-thumb: #eaa93f;

  --font-jp: "Yu Gothic Medium", "游ゴシック Medium", "YuGothic", "Yu Gothic",
    "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-din: "din-2014", "DIN Alternate", "Oswald", "Arial Narrow", sans-serif;

  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-jp);
  color: var(--c-ink);
  background: var(--c-white);
  line-height: 1.9;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, p {
  margin: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-ink);
  color: var(--c-white);
  padding: 0.6em 1em;
  z-index: 999;
}
.skip-link:focus {
  left: 0;
}

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

.section-heading {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1.1em;
}

.eyebrow {
  font-family: var(--font-din);
  color: var(--c-eyebrow);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3em;
}

.section-watermark {
  position: absolute;
  top: 0;
  left: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-din);
  font-size: 4rem;
  font-weight: 600;
  color: var(--c-watermark);
  letter-spacing: 0.08em;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: 24px 24px 0;
  background: var(--c-white);
}

.hero__inner {
  max-width: var(--container);
  margin: 0 auto;
}

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

.hero__inner picture {
  display: block;
  width: 100%;
}

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

.hero__support {
  border: 1px solid var(--c-ink);
  text-align: center;
  padding: 0.55em 1em;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  max-width: 420px;
  margin: 18px auto 32px;
}

/* ==========================================================================
   Concept
   ========================================================================== */

.concept {
  position: relative;
  background-color: var(--c-concept-base);
  background-image: url("../assets/concept_texture.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 64px 24px 56px;
  overflow: hidden;
}

.concept .section-watermark {
  font-size: 3.4rem;
  color: rgba(255, 255, 255, 0.55);
  top: -6px;
  left: 4px;
  text-shadow: 0 1px 0 rgba(255,255,255,0.3);
}

.concept__inner {
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  padding-left: 44px;
}

.concept__body p {
  margin-bottom: 1em;
  font-size: 0.92rem;
}

.concept__lead {
  font-weight: 700;
  font-size: 1rem;
}

.concept__sign {
  text-align: right;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Exhibitor
   ========================================================================== */

.exhibitor {
  position: relative;
  background: var(--c-white);
  padding: 56px 24px 48px;
  overflow: hidden;
}

.exhibitor .section-watermark {
  font-size: 3.4rem;
  color: var(--c-watermark);
  top: -6px;
  left: 4px;
}

.exhibitor__inner {
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  padding-left: 44px;
}

.exhibitor__lead {
  font-size: 0.9rem;
  margin-bottom: 2em;
  max-width: 62em;
}

.exhibitor__lead--pc {
  display: none;
}

.exhibitor__list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.exhibitor__item {
  display: grid;
  grid-template-columns: 128px 1fr;
  grid-template-areas:
    "media caption"
    "media sns"
    "bio   bio";
  column-gap: 20px;
  row-gap: 6px;
  align-items: start;
}

.exhibitor__media {
  grid-area: media;
  width: 128px;
  height: 152px;
  overflow: hidden;
  background: #eee;
}

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

.exhibitor__caption {
  grid-area: caption;
}

.exhibitor__role {
  font-size: 0.78rem;
  color: var(--c-ink-soft);
  margin-bottom: 0.2em;
}

.exhibitor__name {
  font-size: 0.95rem;
  font-weight: 700;
}

.exhibitor__sns {
  grid-area: sns;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  color: var(--c-ink);
  transition: color 0.2s ease, transform 0.2s ease;
}
.icon-link svg {
  width: 100%;
  height: 100%;
}
.icon-link:hover {
  color: var(--c-button);
  transform: translateY(-2px);
}

.website-link {
  font-family: var(--font-din);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: opacity 0.2s ease;
}
.website-link:hover {
  opacity: 0.6;
}

.exhibitor__bio {
  grid-area: bio;
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--c-ink-soft);
  margin-top: 8px;
}

/* ==========================================================================
   Information
   ========================================================================== */

.information {
  background: var(--c-info-bg);
  padding: 56px 24px;
  text-align: center;
}

.information__inner {
  max-width: var(--container);
  margin: 0 auto;
}

.section-heading--center {
  text-align: center;
}

.information__lead {
  font-size: 0.85rem;
  margin-bottom: 1.8em;
}

.information__buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 480px;
  margin: 0 auto 2.6em;
}

.cta-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--c-button);
  color: var(--c-white);
  padding: 1.5em 1.6em;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  font-weight: 500;
  margin: 0 5px 5px 0;
  box-shadow: 4px 4px 0 0 var(--c-button-shadow);
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

/* corner bracket accent, top-right */
.cta-button::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 16px;
  height: 16px;
  border-top: 1.5px solid rgba(255, 255, 255, 0.85);
  border-right: 1.5px solid rgba(255, 255, 255, 0.85);
}

.cta-button:hover {
  background: var(--c-button-dark);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 0 var(--c-button-shadow);
}

.cta-button__icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cta-button__icon svg {
  width: 100%;
  height: 100%;
}
.cta-button__icon--note {
  border-radius: 5px;
  overflow: hidden;
}
.cta-button__icon--note img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.note-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  text-align: left;
}

.note-card--pc-only {
  display: none;
}

.note-card {
  background: var(--c-white);
  min-height: 158px;
  overflow: hidden;
}

.note-embed {
  display: block;
  width: 100%;
  height: 158px;
  border: 0;
}

/* ==========================================================================
   Onlineshop / Contact (shared row pattern)
   ========================================================================== */

.onlineshop {
  background: var(--c-onlineshop-bg);
  padding: 56px 24px;
}

.contact {
  background: var(--c-contact-bg);
  padding: 56px 24px 64px;
}

.onlineshop__inner,
.contact__inner {
  max-width: var(--container);
  margin: 0 auto;
}

.onlineshop__row,
.contact__row {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.onlineshop__lead,
.contact__lead {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5em;
}

.onlineshop__text p,
.contact__text p {
  font-size: 0.84rem;
  line-height: 1.85;
}

.cta-button--wide {
  align-self: stretch;
}

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

.site-footer {
  background: var(--c-contact-bg);
  text-align: center;
  padding: 28px 24px 40px;
  font-family: var(--font-din);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  border-top: 1px solid rgba(0,0,0,0.06);
}

/* ==========================================================================
   Tablet & Desktop — 768px and up keeps the PC layout
   ========================================================================== */

@media (min-width: 768px) {

  .hero {
    padding: 40px 48px 0;
  }

  .hero__support {
    max-width: 480px;
    font-size: 0.95rem;
    margin: 22px auto 40px;
  }

  .section-heading {
    font-size: 2.2rem;
  }

  .eyebrow {
    font-size: 1.05rem;
  }

  /* Concept */
  .concept {
    padding: 110px 48px 100px;
  }
  .concept .section-watermark {
    font-size: 6.5rem;
    top: -10px;
    left: 12px;
  }
  .concept__inner {
    padding-left: 130px;
  }
  .concept__body {
    max-width: 760px;
  }
  .concept__body p {
    font-size: 1.05rem;
  }
  .concept__lead {
    font-size: 1.15rem;
  }
  .concept__sign {
    font-size: 0.95rem;
  }

  /* Exhibitor */
  .exhibitor {
    padding: 90px 48px 80px;
  }
  .exhibitor .section-watermark {
    font-size: 6.5rem;
    top: -10px;
    left: 12px;
  }
  .exhibitor__inner {
    padding-left: 130px;
  }
  .exhibitor__lead--pc {
    display: block;
  }
  .exhibitor__lead--sp {
    display: none;
  }
  .exhibitor__lead {
    font-size: 1rem;
  }

  .exhibitor__list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px 20px;
  }

  .exhibitor__item {
    display: block;
  }

  .exhibitor__media {
    width: 100%;
    height: auto;
    aspect-ratio: 133 / 158;
  }

  .exhibitor__caption {
    margin-top: 14px;
    width: 100%;
  }

  .exhibitor__role,
  .exhibitor__name {
    font-size: 0.8rem;
    line-height: 1.6;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }

  .exhibitor__sns {
    margin-top: 14px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .exhibitor__bio {
    display: none;
  }

  /* Information */
  .information {
    padding: 100px 48px;
  }
  .information__lead {
    font-size: 1rem;
  }
  .information__buttons {
    flex-direction: row;
    max-width: 730px;
    justify-content: center;
  }
  .information__buttons .cta-button {
    flex: 1;
    max-width: 360px;
  }

  .note-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .note-card--pc-only {
    display: block;
  }
  .note-card,
  .note-embed {
    height: 200px;
  }

  /* Onlineshop / Contact */
  .onlineshop {
    padding: 90px 48px;
  }
  .contact {
    padding: 90px 48px 100px;
  }
  .onlineshop__row,
  .contact__row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .onlineshop__lead,
  .contact__lead {
    font-size: 1.05rem;
  }
  .onlineshop__text p,
  .contact__text p {
    font-size: 0.92rem;
  }
  .onlineshop__text,
  .contact__text {
    max-width: 560px;
  }
  .cta-button--wide {
    flex-shrink: 0;
    width: 380px;
    align-self: center;
  }

  .site-footer {
    font-size: 0.85rem;
    padding: 36px 24px 48px;
  }
}

/* ==========================================================================
   Larger desktop refinement
   ========================================================================== */

@media (min-width: 1280px) {
  .hero__title {
    font-size: 3.6rem;
  }
  .concept .section-watermark,
  .exhibitor .section-watermark {
    font-size: 7.5rem;
  }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}