/* ========================================
   三浦技研 50周年記念ゴルフコンペ
   Base Style - Dark Premium Theme
   ======================================== */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --color-bg: #0a0a0a;
  --color-bg-alt: #111111;
  --color-bg-section: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-surface-hover: #222222;
  --color-border: #2a2a2a;
  --color-border-light: #333333;
  --color-text: #e8e8e8;
  --color-text-muted: #b0b0b0;
  --color-text-subtle: #808080;
  --color-accent: #c0c8d4;
  --color-accent-light: #e2e6ec;
  --color-accent-dark: #8a929e;
  --color-white: #ffffff;
  --color-black: #000000;

  /* Typography */
  --font-en: 'Cormorant Garamond', 'Georgia', serif;
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-base-size: 16px;

  /* Spacing */
  --section-padding: 120px;
  --container-width: 1100px;
  --container-padding: 24px;

  /* Transitions */
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
}

html {
  font-size: var(--font-base-size);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-ja);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul {
  list-style: none;
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Section Common --- */
.section {
  padding: var(--section-padding) 0;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__description {
  text-align: center;
  max-width: 720px;
  margin: -40px auto 56px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

.section__label {
  display: block;
  font-family: var(--font-en);
  font-size: 3rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0;
  font-weight: 600;
  background: linear-gradient(170deg, #3a3f48 0%, #70787e 20%, #b0b8c0 40%, #e0e4e8 49%, #ffffff 50%, #c8ccd2 55%, #8a9098 70%, #4a5058 90%, #2a2e34 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.6)) drop-shadow(0 -1px 1px rgba(255, 255, 255, 0.08));
}

.section__title {
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

/* ========================================
   HEADER
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 110px;
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo-img {
  height: 80px;
  width: auto;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav-list a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: #ffffff;
  transition: color var(--transition-base);
  position: relative;
}

.nav-en {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.12em;
}

.nav-ja {
  font-family: var(--font-ja);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  order: 2;
}

.header__nav-list a::after {
  content: '';
  position: relative;
  order: 1;
  left: 0;
  width: 0;
  height: 1px;
  margin-top: -2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.header__nav-list a:hover {
  color: #ffffff;
}

.header__nav-list a:hover::after,
.header__nav-list a.is-current::after {
  width: 100%;
}

.header__nav-entry {
  padding: 10px 44px;
  border: none;
  outline: 1.5px solid rgba(0, 0, 0, 0.4);
  outline-offset: -3px;
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-light));
  color: var(--color-black) !important;
  font-weight: 600;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.header__nav-entry .nav-ja {
  color: rgba(0, 0, 0, 0.5) !important;
  font-weight: 600;
}

.header__nav-entry::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transition: none;
}

.header__nav-entry:hover::before {
  left: 150%;
  transition: left 0.6s ease;
}

.header__nav-entry:hover {}

.header__nav-entry::after {
  display: none !important;
}

/* Hamburger */
.header__menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.header__menu-btn span {
  display: block;
  width: 100%;
  height: 1px;
  background-color: var(--color-white);
  position: absolute;
  left: 0;
  transition: all var(--transition-base);
}

.header__menu-btn span:nth-child(1) {
  top: 0;
}

.header__menu-btn span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.header__menu-btn span:nth-child(3) {
  bottom: 0;
}

.header__menu-btn.is-active span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.header__menu-btn.is-active span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn.is-active span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  z-index: 2;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 110px;
  background-color: var(--color-black);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.hero__bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 1.5s ease;
  animation: heroBgFadeIn 3s ease forwards;
}

@keyframes heroBgFadeIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.hero__bg-fallback {
  display: none;
}

.hero__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.hero__bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.1) 40%, rgba(0, 0, 0, 0.5) 100%);
}

.hero__content {
  position: relative;
  text-align: center;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: heroFadeIn 2s ease forwards;
  opacity: 0;
}

@keyframes heroFadeIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__logo {
  margin-bottom: 40px;
}

.hero__logo-img {
  width: 520px;
  max-width: 80vw;
  height: auto;
}

.hero__subtitle {
  font-family: var(--font-ja);
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  line-height: 2;
  color: #ffffff;
  margin-bottom: 40px;
}

.hero__date {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: #ffffff;
  margin-bottom: 56px;
}

.hero__date-sep {
  margin: 0 12px;
  color: rgba(255, 255, 255, 0.5);
}

.hero__cta {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.875rem;
  margin-bottom: 80px;
  letter-spacing: 0.3em;
  padding: 16px 56px;
  border: 1px solid #ffffff;
  color: #ffffff;
  transition: all var(--transition-base);
}

.hero__cta:hover {
  background-color: var(--color-accent);
  color: var(--color-black);
}

.hero__scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero__scroll span {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: #ffffff;
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 3px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: top;
  }

  50% {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
  }

  100% {
    opacity: 0;
    transform: scaleY(1);
    transform-origin: bottom;
  }
}

/* --- Depth effect (背景画像セクションを奥に沈める) --- */
.hero {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.9);
}

/*
 * セクションのレイヤリング:
 *   - 背景画像なし（フラット） → 手前にせり出す: z-index高 + 上下に影を放つ
 *   - 背景画像あり（パララックス） → 奥に沈む: z-index低 + 影なし
 */

/* 背景なし: 手前のレイヤー (上下に影) */
.section--news,
.section--outline,
.section--rules,
.section--sponsor,
.section--contact {
  position: relative;
  z-index: 2;
  box-shadow:
    0 -16px 40px rgba(0, 0, 0, 0.9),
    0 16px 40px rgba(0, 0, 0, 0.9);
}

/* 背景あり: 奥のレイヤー (影なし) */
.section--concept,
.section--category,
.section--prize,
.section--result,
.section--entry {
  position: relative;
  z-index: 0;
}

/* --- Section Background (parallax) --- */
.section--bg-course,
.section--bg-iron,
.section--bg-teeshot,
.section--bg-outline,
.section--bg-category,
.section--bg-prize,
.section--bg-entry {
  position: relative;
  overflow: hidden;
}

.section--bg-course::before,
.section--bg-iron::before,
.section--bg-teeshot::before,
.section--bg-outline::before,
.section--bg-category::before,
.section--bg-prize::before,
.section--bg-entry::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  filter: grayscale(100%) brightness(0.12);
  z-index: 0;
}

.section--bg-course::before {
  background-image: url('../images/hero-course.jpg');
}

.section--bg-iron::before {
  background-image: url('../images/hero-iron.jpg');
}

.section--bg-outline::before {
  background-image: url('../images/bg-outline.jpg');
  top: -200px;
  bottom: -200px;
  transform: translateY(var(--parallax-y, 0));
  will-change: transform;
}

.section--bg-category::before {
  background-image: url('../images/bg-category.jpg');
  top: -200px;
  bottom: -200px;
  transform: translateY(var(--parallax-y, 0));
  will-change: transform;
}

.section--bg-prize::before {
  background-image: url('../images/bg-prize.jpg');
  top: -200px;
  bottom: -200px;
  transform: translateY(var(--parallax-y, 0));
  will-change: transform;
}

.section--bg-entry::before {
  background-image: url('../images/bg-entry.jpg');
  top: -200px;
  bottom: -200px;
  transform: translateY(var(--parallax-y, 0));
  will-change: transform;
}

.section--bg-teeshot::before {
  background-image: url('../images/concept-teeshot.jpg');
  background-attachment: scroll;
  background-position: center 30%;
  filter: grayscale(var(--concept-gray, 0)) brightness(var(--concept-brightness, 0.8)) blur(var(--concept-blur, 0px));
  top: -200px;
  bottom: -200px;
  transform: translateY(var(--parallax-y, 0));
  will-change: transform, filter;
  transition: filter 0.1s linear;
}

.section--bg-course>.container,
.section--bg-iron>.container,
.section--bg-teeshot>.container,
.section--bg-outline>.container,
.section--bg-category>.container,
.section--bg-prize>.container,
.section--bg-entry>.container,
.section--bg-course>.section__header,
.section--bg-iron>.section__header,
.section--bg-teeshot>.section__header,
.section--bg-outline>.section__header,
.section--bg-category>.section__header,
.section--bg-prize>.section__header,
.section--bg-entry>.section__header {
  position: relative;
  z-index: 1;
}

/* ========================================
   CONCEPT
   ======================================== */
.section--concept {
  background-color: transparent;
  padding-top: 15vh;
  padding-bottom: 15vh;
}

.section--concept .container {
  max-width: 1320px;
  opacity: var(--concept-content-opacity, 0);
  transform: translateY(calc((1 - var(--concept-content-opacity, 0)) * 30px));
  transition: opacity 0.1s linear, transform 0.1s linear;
}

.concept__intro {
  max-width: 920px;
  margin: 0 auto 64px;
  text-align: center;
  font-size: 1.4375rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.04em;
  line-height: 1.9;
  color: var(--color-white);
}

.concept__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.concept__desc {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.concept__img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6), 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ========================================
   NEWS
   ======================================== */
.section--news {
  background-color: #1e1e1e;
  position: relative;
  overflow: hidden;
}


.news__list {
  max-width: 800px;
  margin: 0 auto;
}

.news__item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.news__item:first-child {
  border-top: 1px solid var(--color-border);
}

.news__date {
  font-family: var(--font-en);
  font-size: 0.9375rem;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  flex-shrink: 0;
}

.news__tag {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  flex-shrink: 0;
}

.news__text {
  font-size: 1rem;
  color: var(--color-text);
}

.news__more {
  text-align: center;
  margin-top: 40px;
}

.news__more-link {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  transition: color var(--transition-base);
}

.news__more-link:hover {
  color: var(--color-accent);
}

/* ========================================
   OUTLINE
   ======================================== */
.section--outline {
  background-color: #1e1e1e;
}

.outline__table-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.outline__table {
  width: 100%;
  border-collapse: collapse;
}

.outline__table th,
.outline__table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  font-size: 1rem;
  text-align: left;
  vertical-align: top;
}

.outline__table th {
  width: 160px;
  font-weight: 600;
  color: var(--color-accent-light);
  letter-spacing: 0.05em;
  text-shadow: 0 0 8px rgba(192, 200, 212, 0.15);
}

.outline__table td {
  color: var(--color-text);
}

.outline__date {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-accent-light);
}

.outline__venue {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.outline__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 48px;
}

.outline__link {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-accent-light);
  border: 1px solid var(--color-accent-dark);
  padding: 12px 32px;
  transition: all var(--transition-base);
}

.outline__link:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
}

/* ========================================
   CATEGORY
   ======================================== */
.section--category {
  background-color: #1e1e1e;
}

.category__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.category__card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 40px 36px 36px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.category__card:hover {
  border-color: var(--color-accent-dark);
}

.category__label {
  display: block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

/* East: マットなネイビー（関東＝深い青の海・空イメージ） */
.category__card--east {
  background-color: #131c28;
  border-color: #2a3a52;
}
.category__card--east:hover {
  border-color: #4a6390;
}
.category__card--east .category__label {
  color: #7ea4d4;
}
.category__card--east .category__date {
  color: #9bbde0;
}

/* West: マットなボルドー（関西＝深い赤の情熱・伝統イメージ） */
.category__card--west {
  background-color: #221518;
  border-color: #3f2a30;
}
.category__card--west:hover {
  border-color: #6e424c;
}
.category__card--west .category__label {
  color: #d48a92;
}
.category__card--west .category__date {
  color: #e0a3aa;
}

.category__name {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.category__name-sub {
  display: block;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

.category__date {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.category__desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.8;
  flex: 1;
}

.category__link {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid var(--color-border);
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text);
  text-decoration: none;
  background-color: transparent;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.category__link:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: var(--color-bg);
  text-decoration: none;
}

.category__link-arrow {
  transition: transform var(--transition-base);
}

.category__link:hover .category__link-arrow {
  transform: translateX(4px);
}

.category__details {
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.category__meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 24px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.category__meta-row {
  display: flex;
  gap: 16px;
  align-items: baseline;
}

.category__meta-row dt {
  flex: 0 0 96px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
}

.category__meta-row dd {
  flex: 1;
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.7;
}

.category__meta-row dd a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.category__meta-row dd a:hover {
  color: var(--color-accent-light);
}

.category__meta-note {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  font-size: 0.6875rem;
  color: var(--color-text-subtle);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  vertical-align: middle;
}

.category__meta-sub {
  display: block;
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--color-text-subtle);
}

.category__details li {
  font-size: 1rem;
  color: var(--color-text);
  padding: 6px 0 6px 16px;
  position: relative;
}

.category__details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 1px;
  background-color: var(--color-accent);
}

/* ========================================
   RULES
   ======================================== */
.section--rules {
  background-color: transparent;
}

.rules__content {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.rules__block h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent-light);
  margin-bottom: 20px;
  letter-spacing: 0.1em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  text-shadow: 0 0 8px rgba(192, 200, 212, 0.15);
}

.rules__block li {
  font-size: 1rem;
  color: var(--color-text);
  padding: 8px 0 8px 20px;
  position: relative;
  line-height: 1.8;
}

.rules__block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
}

.rules__note {
  margin-top: 12px;
  padding-left: 20px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ========================================
   PRIZE
   ======================================== */
.section--prize {
  background-color: #1e1e1e;
}

.prize__champion-row {
  display: flex;
  justify-content: center;
  margin-bottom: 56px;
}

.prize__champion-row .prize__card {
  max-width: 640px;
  width: 100%;
}

.prize__grid {
  display: grid;
  gap: 24px;
}

.prize__grid--4col {
  grid-template-columns: repeat(4, 1fr);
}

.prize__grid--2col {
  grid-template-columns: repeat(2, 1fr);
  max-width: 720px;
  margin: 0 auto;
  gap: 24px;
}

.prize__card {
  text-align: center;
  padding: 32px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
}

.prize__card--champion {
  border-color: var(--color-accent-dark);
  padding: 48px 32px;
}

.prize__rank {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.prize__card--champion .prize__rank {
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.prize__image-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 20px;
  background-color: var(--color-bg);
}

.prize__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.prize__card:hover .prize__img {
  transform: scale(1.05);
}

.prize__name {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.6;
}

.prize__card--champion .prize__name {
  font-size: 1.0625rem;
  font-weight: 500;
}

.prize__name small {
  color: var(--color-text-subtle);
  font-size: 0.8125rem;
}

/* メイン賞品（2位以降）の横スクロール・カルーセル */
.prize__carousel {
  position: relative;
}

.prize__carousel-viewport {
  position: relative;
  overflow: hidden;
  margin: 0 calc(-1 * var(--container-padding));
  padding: 4px var(--container-padding) 8px;
  /* 左右にフェード（中身がはみ出してる感を出す） */
  mask-image: linear-gradient(to right,
    transparent 0,
    #000 calc(var(--container-padding) - 8px),
    #000 calc(100% - var(--container-padding) + 8px),
    transparent 100%);
  -webkit-mask-image: linear-gradient(to right,
    transparent 0,
    #000 calc(var(--container-padding) - 8px),
    #000 calc(100% - var(--container-padding) + 8px),
    transparent 100%);
}

.prize__carousel-track {
  display: flex;
  gap: 20px;
  will-change: transform;
  user-select: none;
  cursor: grab;
}

.prize__card--scroll {
  flex: 0 0 240px;
}

/* ドット（ページネーション風インジケーター） */
.prize__carousel-dots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding: 0 16px;
}

.prize__carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background-color: rgba(255, 255, 255, 0.22);
  cursor: pointer;
  transition: background-color 0.25s ease, width 0.3s ease, transform 0.2s ease;
}

.prize__carousel-dot:hover {
  background-color: rgba(255, 255, 255, 0.5);
  transform: scale(1.2);
}

.prize__carousel-dot:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.prize__carousel-dot.is-active {
  background-color: var(--color-accent);
  width: 24px;
}

.prize__img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.1em;
  background: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,0.02),
    rgba(255,255,255,0.02) 8px,
    rgba(255,255,255,0.04) 8px,
    rgba(255,255,255,0.04) 16px
  );
}

.prize__participation {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.prize__participation-title {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-accent);
}

.prize__participation-desc {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.prize__note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

@media (max-width: 880px) {
  .prize__grid--4col {
    grid-template-columns: repeat(2, 1fr);
  }
  .prize__champion-row .prize__card {
    max-width: 100%;
  }
  .prize__card--champion {
    padding: 32px 20px;
  }
}

@media (max-width: 540px) {
  .prize__grid--4col,
  .prize__grid--2col {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   SPONSOR
   ======================================== */
.section--sponsor {
  background-color: transparent;
}

.sponsor__intro {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.sponsor__logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.sponsor__logo {
  display: block;
  border: 1px solid var(--color-border);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background-color: var(--color-surface);
  text-decoration: none;
  transition: border-color var(--transition-base);
}

a.sponsor__logo:hover {
  border-color: var(--color-accent);
}

.sponsor__logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

a.sponsor__logo:hover img {
  transform: scale(1.04);
}

@media (max-width: 880px) {
  .sponsor__logos {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .sponsor__logos {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   ENTRY
   ======================================== */
.section--entry {
  background-color: #1e1e1e;
  padding: var(--section-padding) 0;
}

.entry__content {
  text-align: center;
  position: relative;
  z-index: 1;
}


.entry__desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 48px;
}

.entry__btn {
  display: inline-block;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 22px 72px;
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-light));
  color: var(--color-black);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  outline: 1.5px solid rgba(0, 0, 0, 0.4);
  outline-offset: -3px;
}

.entry__btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transition: none;
}

.entry__btn:hover::before {
  left: 150%;
  transition: left 0.6s ease;
}

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

.entry__note {
  margin-top: 24px;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* ========================================
   RESULT SUMMARY (index-post)
   ======================================== */
.hero__thanks {
  font-size: 1rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-top: 16px;
  margin-bottom: 8px;
}

@media (max-width: 480px) {
  .hero__thanks {
    font-size: 0.8125rem;
  }
}

.result-summary__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto 48px;
}

.result-summary__card {
  text-align: center;
  padding: 40px 24px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  transition: border-color var(--transition-base);
}

.result-summary__card:hover {
  border-color: var(--color-accent-dark);
}

.result-summary__cat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-en);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-black);
  background-color: var(--color-accent);
  margin-bottom: 16px;
}

.result-summary__cat {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 20px;
}

.result-summary__winner {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-summary__winner-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
}

.result-summary__winner-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-white);
}

.result-summary__winner-score {
  font-family: var(--font-en);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.result-summary__cta {
  text-align: center;
}

.result-summary__btn {
  display: inline-block;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 22px 72px;
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-light));
  color: var(--color-black);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  outline: 1.5px solid rgba(0, 0, 0, 0.4);
  outline-offset: -3px;
}

.result-summary__btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transition: none;
}

.result-summary__btn:hover::before {
  left: 150%;
  transition: left 0.6s ease;
}

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

@media (max-width: 768px) {
  .result-summary__grid {
    grid-template-columns: 1fr;
  }

  .result-summary__btn {
    padding: 18px 48px;
    font-size: 0.9375rem;
  }
}

/* ========================================
   CONTACT
   ======================================== */
.section--contact {
  background-color: transparent;
}

.contact__body {
  text-align: center;
}

.contact__text {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.contact__info {
  display: inline-flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.contact__info-item {
  display: flex;
  gap: 24px;
  align-items: baseline;
}

.contact__info-label {
  font-size: 0.9375rem;
  color: var(--color-accent);
  width: 100px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}

.contact__info-value {
  font-size: 1rem;
  color: var(--color-text);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background-color: var(--color-black);
  padding: 64px 0 32px;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  align-items: flex-start;
  gap: 64px;
}

.footer__left {
  flex-shrink: 0;
}

.footer__logo-img {
  height: 100px;
  width: auto;
  opacity: 0.5;
}

.footer__right {
  flex: 1;
}

.footer__nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer__nav a {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  transition: color var(--transition-base);
}

.footer__nav a:hover {
  color: var(--color-accent);
}

.footer__links {
  margin-top: 24px;
  display: flex;
  gap: 0;
  align-items: center;
}

.footer__links a {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  transition: color var(--transition-base);
}

.footer__links a:hover {
  color: var(--color-text-muted);
}

.footer__links a+a::before {
  content: '|';
  margin: 0 12px;
  color: var(--color-border-light);
  font-size: 0.75rem;
}

.footer__copy {
  margin-top: 24px;
  font-size: 0.6875rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.05em;
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* Short viewport */
@media (max-height: 940px) {
  .hero__scroll {
    display: none;
  }

  .hero__cta {
    margin-bottom: 24px;
  }
}

@media (max-height: 800px) {
  .hero {
    padding-top: 80px;
  }

  .hero__logo {
    margin-bottom: 24px;
  }

  .hero__logo-img {
    width: 360px;
  }

  .hero__subtitle {
    font-size: 1rem;
    margin-bottom: 16px;
  }

  .hero__thanks {
    margin-top: 8px;
    font-size: 0.875rem;
  }

  .hero__cta {
    margin-bottom: 16px;
  }
}

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .header__nav-list {
    gap: 16px;
  }

  .nav-en {
    font-size: 0.875rem;
  }

  .header__nav-entry {
    padding: 10px 28px;
  }

  .hero__logo-img {
    width: 300px;
  }

  .hero__subtitle {
    margin-bottom: 24px;
  }

  .hero__date {
    margin-bottom: 32px;
  }

  .hero__scroll {
    display: none;
  }

  .concept__body {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .concept__intro {
    font-size: 1.25rem;
    margin-bottom: 48px;
  }

  .concept__image {
    order: 0;
  }

  .section--bg-teeshot::before {
    background-size: auto 80%;
    background-repeat: no-repeat;
    background-position: 60% center;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
    --container-padding: 48px;
  }

  /* iOS: background-attachment: fixed 非対応のためscrollに */
  .section--bg-teeshot::before {
    background-attachment: scroll;
  }

  /* Header Mobile */
  .header__menu-btn {
    display: block;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: right var(--transition-base);
  }

  .header__nav.is-open {
    right: 0;
  }

  .header__nav-list {
    flex-direction: column;
    gap: 28px;
  }

  .header__nav-list a {
    font-size: 1rem;
  }

  .header__inner {
    height: 70px;
  }

  .hero {
    padding-top: 70px;
  }

  .hero__logo-img {
    width: 240px;
  }

  .hero__subtitle {
    font-size: 0.9375rem;
    margin-bottom: 24px;
  }

  .hero__date {
    font-size: 0.8125rem;
    margin-bottom: 32px;
  }

  .hero__cta {
    padding: 14px 40px;
    font-size: 0.8125rem;
  }

  .hero__scroll {
    bottom: 20px;
  }

  .hero__scroll span {
    font-size: 0.75rem;
  }

  .hero__scroll-line {
    height: 40px;
  }

  .hero__bg-video {
    object-position: 25% center;
  }

  /* Concept - 1カラムに戻す */
  .concept__body {
    grid-template-columns: 1fr;
  }

  .concept__image {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .header__logo-img {
    height: 48px;
  }

  /* Concept */
  .concept__intro {
    font-size: 1.125rem;
    margin-bottom: 36px;
  }

  .section--bg-teeshot::before {
    background-position: 65% 10%;
    background-size: auto 70%;
    background-repeat: no-repeat;
  }

  .section--bg-outline::before {
    background-size: auto 90%;
    background-repeat: no-repeat;
    background-position: 30% center;
  }

  /* Section */
  .section__header {
    margin-bottom: 40px;
  }

  .section__label {
    font-size: 2rem;
  }

  .section__title {
    font-size: 0.8125rem;
  }

  /* News */
  .news__item {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 4px 12px;
    align-items: center;
  }

  .news__date {
    grid-column: 1 / -1;
  }

  .news__tag {
    grid-column: 1;
    justify-self: start;
    font-size: 0.625rem;
    padding: 3px 8px;
  }

  .news__text {
    grid-column: 2;
  }

  /* Outline */
  .outline__table th {
    width: 80px;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .outline__table td {
    font-size: 0.875rem;
  }

  /* Category */
  .category__grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .category__card {
    padding: 32px 24px 28px;
  }

  /* Prize */
  .prize__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  /* Contact */
  .contact__info {
    text-align: center;
  }

  .contact__info-item {
    flex-direction: column;
    align-items: center;
    gap: 4px;
  }

  /* Entry */
  .entry__btn {
    padding: 16px 40px;
  }

  /* Footer */
  .footer__inner {
    flex-direction: column;
    align-items: center;
    gap: 32px;
    text-align: center;
  }

  .footer__logo-img {
    height: 64px;
  }

  .footer__nav {
    justify-content: center;
    gap: 16px;
  }

  .footer__links {
    justify-content: center;
  }

  .footer__copy {
    text-align: center;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  :root {
    --container-padding: 20px;
  }
  .hero__scroll {
    bottom: 10px;
  }

  .hero__scroll span {
    font-size: 0.625rem;
  }

  .hero__scroll-line {
    height: 28px;
  }

  .hero__logo-img {
    width: 200px;
  }

  .contact__info-item {
    flex-direction: column;
    gap: 4px;
  }
}

/* ========================================
   ANIMATIONS (Intersection Observer)
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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