/* ==============================================
  Global Container System
=============================================== */
:root {
  --container: 80rem;
  --gutter: 1rem;
  --gutter-md: 3rem;

  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-400: #64748b;
  --slate-300: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-000: #ffffff;

  --blue-900: #1e3a8a;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-300: #93c5fd;
  --blue-200: #bfdbfe;
  --blue-100: #dbeafe;

  --yellow-300: #eab308;
  --yellow-200: #facc15;
  --yellow-100: #fde047;

  --orange-200: #e95738;
  --orange-100: #ff9b28;

  --sticky-footer-h-sp: 6rem;
  --sticky-footer-h-pc: 4.5rem;

  --scroll-indicator-space-sp: 3.2rem;
  --scroll-indicator-space-pc: 2.6rem;
}

/* ==============================================
  Common (Base)
=============================================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: rgb(30, 41, 59);
  background-color: #f0f9ff;
  overflow-x: hidden;
  padding-bottom: env(safe-area-inset-bottom);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.has-sticky {
  padding-bottom: calc(var(--sticky-footer-h-sp) + env(safe-area-inset-bottom));
}

.br-sp {
  display: inline;
}

.br-pc {
  display: none;
}

@media (min-width: 768px) {
  body {
    padding-bottom: calc(var(--sticky-footer-h-pc) + env(safe-area-inset-bottom));
  }

  .br-sp {
    display: none;
  }

  .br-pc {
    display: inline;
  }
}

.font-number {
  font-family: "Montserrat", "Noto Sans JP", sans-serif;
  font-variant-numeric: tabular-nums;
}

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

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

ol,
ul {
  list-style: none;
}

/* ==============================================
  Container
=============================================== */
.container {
  width: min(var(--container), calc(100% - (var(--gutter) * 2)));
  margin-left: auto;
  margin-right: auto;
}

/* Container: PC */
@media (min-width: 768px) {
  .container {
    width: min(var(--container), calc(100% - (var(--gutter-md) * 2)));
  }
}

/* ==============================================
  Header
=============================================== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  background-color: rgba(255, 255, 255, 0.92);
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.header-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.header-logo img {
  width: auto;
  height: 1.75rem;
}

/* Header: PC */
@media (min-width: 768px) {
  #header {
    padding-left: var(--gutter-md);
    padding-right: var(--gutter-md);
  }

  .header-logo img {
    height: 2.35rem;
  }
}

/* ==============================================
  MV
=============================================== */
#mv {
  position: relative;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6rem 0 calc(3.25rem + var(--scroll-indicator-space-sp));
  min-height: var(--mv-min-h, 100vh);
}

.mv-bg-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.mv-sky-bg {
  position: absolute;
  inset: 0;
  background: url("/kyufuri-campaign/assets/images/mv_sky.webp") center / cover no-repeat;
}

#sakura-container {
  position: absolute;
  inset: 0;
  z-index: 10;
  overflow: hidden;
  pointer-events: none;
}

.sakura-petal {
  position: absolute;
  background-color: #ffc0cb;
  border-radius: 150% 0 150% 0;
  opacity: 0.9;
  box-shadow: 0 0 4px rgba(255, 182, 193, 0.6);
  animation: fall linear infinite;
  will-change: transform, opacity;
  transform: translate3d(0, 0, 0);
}

.is-ios .sakura-petal {
  animation-name: fall-ios;
  will-change: transform;
  transform: none;
}

@keyframes fall-ios {
  0% {
    transform: translate3d(0, -80px, 0) rotate(0deg);
  }

  100% {
    transform: translate3d(10vw, calc(var(--mv-fall, 800px)), 0) rotate(360deg);
  }
}

.mv-content {
  position: relative;
  z-index: 20;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mv-anim-elem {
  opacity: 0;
  transform: translateY(2rem);
}

/* Catchphrase */
.mv-catchphrase-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  font-size: 0.75rem;
  border-radius: 9999px;
  background: #ff899b;
  color: var(--slate-000);
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.15);
  transform: rotate(-2deg);
}

.main-title-wrap {
  position: relative;
  z-index: 10;
  max-width: min(100%, 80rem);
  margin: 0 auto 1.5rem;
  opacity: 0;
  transform: scale(0.95);
}

.mv-main-title {
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--slate-000);
  line-height: 0.85;
  text-align: center;
  padding-top: 0.5rem;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.35), 0 2px 4px rgba(0, 0, 0, 0.3);
  font-size: 4rem;
  margin: 1.5rem 3rem;
}

.mv-main-title-sub {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 3rem;
}

.mv-period-badge {
  position: absolute;
  z-index: 30;
  top: 0;
  width: clamp(5rem, 12vw + 0.5rem, 6.2rem);
  height: clamp(5rem, 12vw + 0.5rem, 6.2rem);
  right: clamp(-0.6rem, -2vw, 0.25rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--yellow-100);
  color: #575757;
  font-weight: 900;
  border-radius: 9999px;
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.15);
  transform: rotate(12deg);
  animation: bounce-slow 2.5s infinite;
}

.mv-period-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.mv-period-date {
  font-size: 1.65rem;
  line-height: 1;
}

/* MV: PC */
@media (min-width: 768px) {
  #mv {
    padding: 8.5rem 0 calc(6rem + var(--scroll-indicator-space-pc));
  }

  .mv-catchphrase-badge {
    padding: 1rem 3rem;
    font-size: 1.5rem;
  }

  .mv-main-title {
    font-size: 7rem;
    margin: 3rem;
  }

  .mv-main-title-sub {
    font-size: 5.5rem;
  }

  .mv-period-badge {
    width: 8.5rem;
    height: 8.5rem;
    top: 0;
    right: -2.5rem;
  }

  .mv-period-label {
    font-size: clamp(0.85rem, 1.5vw, 1.3rem);
  }

  .mv-period-date {
    font-size: clamp(1.85rem, 6vw, 2.75em);
  }
}

/* MV: Small */
@media (max-width: 410px) {
  #mv {
    padding-bottom: calc(3.25rem + 3.8rem);
  }

  .mv-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .mv-main-title {
    margin: 1.5rem 0;
  }

  .mv-catchphrase-badge {
    position: relative;
    right: 1.25rem;
  }

  .mv-catchphrase-wrap {
    order: 1;
  }

  .main-title-wrap {
    order: 2;
    margin-bottom: 0.6rem;
  }

  .mv-period-badge {
    top: -1.5rem;
    right: -1rem;
  }
}

/* ==============================================
  Scroll Indicator
=============================================== */
.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: clamp(0.2rem, 0.8vw, 0.6rem);
  transform: translateX(-50%);
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
}

.scroll-indicator-label {
  color: var(--slate-000);
  font-size: 0.65rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: 0.12em;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.35);
}

.scroll-indicator-line {
  width: 1px;
  height: clamp(1.4rem, 3vw, 1.9rem);
  background-color: rgba(255, 255, 255, 0.5);
  position: relative;
  overflow: hidden;
}

.scroll-indicator-fill {
  position: absolute;
  left: 0;
  right: 0;
  top: -50%;
  height: 50%;
  background-color: var(--slate-000);
  animation: scroll-line 1.8s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}

/* ==============================================
  Reward Panel
=============================================== */
.reward-panel {
  position: relative;
  width: 100%;
  padding: 1rem;
  border-radius: 1.5rem;
  overflow: hidden;
  opacity: 0;
  transform: translateY(2rem);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.reward-panel-content {
  position: relative;
  z-index: 10;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
}

.reward-panel-lead p {
  margin: 0;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--slate-700);
}

.reward-panel-amount {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  color: var(--blue-900);
  white-space: nowrap;
}

.reward-panel-value {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
  white-space: nowrap;
}

.reward-panel-label {
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 800;
  margin-right: 0.4rem;
}

.reward-panel-number {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: clamp(2rem, 12vw, 4rem);
  font-weight: 900;
  letter-spacing: clamp(0em, 0.15vw, 0.02em);
  background: linear-gradient(135deg, var(--blue-600), #4338ca);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.15));
}

.reward-panel-unit {
  font-weight: 900;
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  margin-left: 0.25rem;
}

.reward-panel-badge span {
  display: inline-block;
  padding: 0.375rem 1.25rem;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  color: var(--slate-000);
  border-radius: 9999px;
  background: linear-gradient(to right, var(--yellow-200), var(--yellow-300));
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  white-space: nowrap;
}

.glass-panel {
  position: relative;
  background: url("/kyufuri-campaign/assets/images/glass_panel_bg.webp") center / cover no-repeat;
  border-radius: 1.5rem;
  box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.15);
}

/* Reward Panel: PC */
@media (min-width: 768px) {
  .reward-panel {
    padding: 2rem;
  }

  .reward-panel-number {
    font-size: clamp(3rem, 6vw, 4.5rem);
  }

  .reward-panel-content {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    text-align: left;
  }

  .reward-panel-lead p {
    font-size: clamp(1rem, 1.5vw, 1.65rem);
    letter-spacing: 0.08em;
  }

  .reward-panel-badge span {
    font-size: 1.25rem;
  }
}

/* Reward Panel: Small */
@media (max-width: 410px) {
  .reward-panel {
    order: 3;
  }

  .reward-panel-amount {
    transform: translateX(-0.05rem);
    gap: 0.25rem;
  }

  .reward-panel-value {
    gap: 0.2rem;
  }

  .reward-panel-unit {
    margin-left: 0;
  }

  .reward-panel-label {
    margin-right: 0;
  }
}

/* ==============================================
   Conditions
=============================================== */
.conditions-section {
  position: relative;
  overflow: hidden;
  background: #f0f9ff;
  padding: 3rem 0;
}

.conditions-deco {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
}

.conditions-blob {
  position: absolute;
  width: 16rem;
  height: 16rem;
  border-radius: 9999px;
  filter: blur(48px);
  opacity: 0.3;
  animation: pulse 3s ease-in-out infinite;
}

.conditions-blob-1 {
  top: 5rem;
  left: 2.5rem;
  background: var(--blue-200);
}

.conditions-blob-2 {
  bottom: 5rem;
  right: 2.5rem;
  background: #fbcfe8;
  animation-delay: 1s;
}

.conditions-container {
  position: relative;
  z-index: 10;
  margin: 0 auto;
}

.conditions-header {
  text-align: center;
  margin-bottom: 3rem;
}

.mission-badge {
  display: inline-block;
  background: var(--blue-100);
  color: var(--blue-600);
  padding: 0.25rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.conditions-title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
  background: linear-gradient(180deg, var(--blue-500), var(--blue-900));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.conditions-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
}

/* Check Cards */
.check-card {
  width: 100%;
  background: var(--slate-000);
  border-radius: 1.5rem;
  padding: 2rem;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
  border: 2px solid transparent;
  transition: border-color 0.3s ease, transform 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  transform: translateY(3rem);
  opacity: 0;
  overflow: visible;
}

/* hover */
@media (hover: hover) and (pointer: fine) {
  .check-card:hover {
    border-color: var(--blue-300);
  }
}

/* Vertical Ribbon */
.check-ribbon {
  position: absolute;
  top: -6px;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 0.8rem;
  color: var(--slate-000);
  background: linear-gradient(var(--orange-100) 0%, var(--orange-200) 100%);
  border-radius: 2px 0 0 0;
  box-shadow: 0 12px 18px rgba(0, 0, 0, 0.18);
}

.check-ribbon::before {
  content: "";
  position: absolute;
  top: 0;
  left: -6px;
  border-bottom: 4px solid #cf4a2d;
  border-left: 6px solid transparent;
}

.check-ribbon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  height: 0.7rem;
  background:
    linear-gradient(to bottom right, #e95738 50%, transparent 51%) left,
    linear-gradient(to bottom left, #e95738 50%, transparent 51%) right;
  background-size: 50% 100%;
  background-repeat: no-repeat;
  filter: drop-shadow(0 2px 0 rgba(0, 0, 0, 0.08));
}

.ribbon-text {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  line-height: 1.1;
}

/* Text */
.check-title,
.check-desc,
.check-note {
  text-align: center;
}

.check-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-800);
  margin: 0;
  padding-top: 1.5rem;
}

.check-desc,
.check-note {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--slate-400);
  line-height: 1.7;
}

.check-note-small {
  font-size: 0.95rem;
  color: var(--blue-500);
  font-weight: 700;
}

/* Image */
.check-img-wrap {
  width: 100%;
  max-width: 260px;
  margin: 1rem auto 0;
  aspect-ratio: 4 / 3;
  border-radius: 1rem;
  overflow: hidden;
}

.check-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

/* Actions */
.check-actions {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

/* Buttons（Conditions内） */
.btn {
  display: inline-block;
  width: 100%;
  text-align: center;
  font-size: 1.2rem;
  font-weight: 800;
  padding: 0.75rem 1rem;
  border-radius: 9999px;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.btn-secondary {
  color: #fff;
  background: var(--blue-600);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

@media (hover: hover) and (pointer: fine) {
  .btn-secondary:hover {
    background: var(--blue-900);
    border-color: #fff;
    transform: translateY(-2px);
  }
}

.link-muted {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--slate-300);
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
  .link-muted:hover {
    color: var(--blue-600);
    border-color: var(--blue-600);
  }
}

/* Plus sign */
.plus-sign {
  font-size: 4.5rem;
  font-weight: 900;
  color: var(--blue-200);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: -0.5rem 0;
  line-height: 1;
}

/* Conditions: PC */
@media (min-width: 768px) {
  .conditions-section {
    padding: 5rem 0;
  }

  .conditions-header {
    margin-bottom: 4rem;
  }

  .conditions-title {
    font-size: 3rem;
  }

  .conditions-row {
    flex-direction: row;
    align-items: stretch;
    gap: 0.5rem;
    justify-content: center;
  }

  .check-card {
    width: 33.333%;
    padding: 1.25rem;
  }

  .check-img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 0.75rem;
    margin-top: 1rem;
  }

  .plus-sign {
    font-size: 3rem;
    padding: 0;
  }
}

/* ==============================================
   Result
=============================================== */
.result-area {
  text-align: center;
}

.result-equals {
  display: inline-block;
  font-size: 4rem;
  font-weight: 900;
  color: var(--blue-300);
  transform: rotate(90deg);
}

/* Result: PC */
@media (min-width: 768px) {
  .result-area {
    margin-top: 2rem;
  }

  .result-equals {
    font-size: 3rem;
    margin-bottom: 2rem;
  }
}

/* ==============================================
   Reward Box
=============================================== */
.reward-box {
  position: relative;
  width: 100%;
  margin: 0;
  border-radius: 2rem;
  color: var(--slate-000);
  background: linear-gradient(90deg, #2f4f95 0%, #2f4f95 100%);
  box-shadow: 0 0 0 3px rgba(255, 245, 102, 0.9);
  overflow: hidden;
}

.reward-box::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  border: 4px solid rgba(253, 230, 138, 0.35);
  pointer-events: none;
}

.reward-box-deco {
  position: absolute;
  width: 16rem;
  height: 16rem;
  border-radius: 9999px;
  filter: blur(48px);
}

.reward-box-deco-1 {
  top: -5rem;
  right: -5rem;
  background: rgba(255, 255, 255, 0.12);
}

.reward-box-deco-2 {
  bottom: -5rem;
  left: -5rem;
  background: rgba(253, 230, 138, 0.18);
}

.reward-box-inner {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 2rem;
}

.reward-box-left {
  text-align: center;
}

.reward-box-tag {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 0.5rem;
  background: rgba(255, 245, 102, 0.9);
  color: var(--blue-900);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.2em;
}

.reward-box-lead {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 800;
}

.reward-box-sub {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.85rem;
}

.reward-box-right {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem 0;
}

.reward-box-cash {
  font-size: 1.25rem;
  font-weight: 800;
  color: rgb(255, 252, 211);
}

.reward-box-amount {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 3.25rem;
  font-weight: 900;
  background: linear-gradient(180deg, var(--slate-000), rgba(255, 245, 102, 1));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.12));
}

.reward-box-yen {
  font-size: 1.125rem;
  font-weight: 800;
  color: rgba(255, 248, 220, 0.95);
}

.reward-box-foot {
  padding: 0.75rem 1.5rem 1em;
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.reward-box-foot-text {
  margin: 0;
  padding-right: 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.82);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
  letter-spacing: 0.12em;
}

/* Reward Box: PC */
@media (min-width: 768px) {
  .reward-box-inner {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    padding: 2.5rem 3rem;
  }

  .reward-box-left {
    text-align: left;
  }

  .reward-box-right {
    gap: 0.25rem;
    white-space: nowrap;
  }

  .reward-box-cash {
    font-size: 2rem;
  }

  .reward-box-amount {
    font-size: 4.375rem;
    letter-spacing: 0;
  }

  .reward-box-yen {
    font-size: 1.75rem;
  }

  .reward-box-foot {
    text-align: right;
  }
}

/* Reward Box: Small */
@media (max-width: 410px) {
  .reward-box-right {
    align-items: flex-end;
  }
}

/* ==============================================
   FAQ / Panels
=============================================== */
.faq-section {
  background: var(--slate-000);
  padding: 3rem 0;
}

.faq-container {
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.panel {
  border: 1px solid var(--slate-200);
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
  background: var(--slate-000);
}

.panel-details {
  margin: 0;
}

.panel-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem;
  background: #d5eeff;
  color: var(--slate-800);
  font-weight: 800;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s ease;
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .panel-summary:hover {
    background: #f1f5f9;
  }
}

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

.panel-summary-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-info-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--blue-500);
}

.panel-chevron {
  display: inline-flex;
  color: var(--slate-600);
  transition: transform 0.3s ease;
}

.panel-details[open] .panel-chevron {
  transform: rotate(180deg);
}

.panel-body {
  padding: 1.5rem;
  color: var(--slate-600);
  font-size: 0.875rem;
  line-height: 1.85;
  border-top: 1px solid var(--slate-100);
  background: var(--slate-000);
}

.panel-block+.panel-block {
  margin-top: 1.25rem;
}

.panel-title {
  margin: 0 0 0.5rem;
  color: var(--slate-800);
  font-weight: 900;
  font-size: 0.95rem;
}

.panel-list {
  margin: 0.25rem 0 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.panel-note {
  display: block;
  margin-top: 0.35rem;
  color: var(--slate-400);
  font-size: 0.75rem;
}

/* FAQ list */
.faq-head {
  padding: 1.5rem;
  background: #d5eeff;
  color: var(--slate-800);
  font-weight: 900;
  border-bottom: 1px solid var(--slate-100);
}

.faq-head-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.faq-items {
  background: var(--slate-000);
}

.faq-item {
  border-bottom: 1px solid var(--slate-100);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-size: 0.875rem;
  font-weight: 900;
  color: var(--slate-700);
  list-style: none;
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .faq-q:hover {
    background: #f8fafc;
  }
}

.faq-q::-webkit-details-marker {
  display: none;
}

.faq-q-left {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.faq-q-mark {
  color: var(--blue-500);
  font-weight: 900;
}

.faq-q-arrow {
  color: var(--blue-500);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-q-arrow {
  transform: rotate(180deg);
}

.faq-a {
  padding: 0 1.25rem 1.25rem 2.5rem;
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.85;
}

.faq-a-mark {
  color: var(--slate-300);
  font-weight: 900;
  margin-right: 0.35rem;
  margin-left: -1.25rem;
}

.link-primary {
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .link-primary:hover {
    text-decoration: none;
  }
}

/* details animation */
details[open] summary~* {
  animation: sweep 0.3s ease-in-out;
}

/* SVG check path anim base */
.check-path {
  stroke: currentColor;
  fill: none;
  stroke-dasharray: 50;
  stroke-dashoffset: 50;
}

/* FAQ: PC */
@media (min-width: 768px) {
  .faq-section {
    padding: 5rem 0;
  }
}

/* ==============================================
   campaign-entry
=============================================== */
.campaign-entry {
  position: relative;
  overflow: hidden;
  color: var(--slate-000);
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(59, 130, 246, 0.25), transparent 60%),
    linear-gradient(90deg, #2a4b8a, #3b4aa6);
  padding: 5rem 0;
}

.campaign-entry-glow {
  position: absolute;
  top: -6rem;
  right: -6rem;
  width: 24rem;
  height: 24rem;
  background: rgba(59, 130, 246, 0.25);
  border-radius: 9999px;
  filter: blur(56px);
}

.campaign-entry-inner {
  position: relative;
  z-index: 10;
  margin: 0 auto;
  text-align: center;
}

.campaign-entry-title {
  margin: 0 0 1.5rem;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.campaign-entry-lead {
  margin: 0 0 2.5rem;
  color: rgba(191, 219, 254, 0.9);
  font-size: 1rem;
}

.campaign-entry-row {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: stretch;
  justify-content: center;
}

.cta-box {
  min-width: 0;
  padding: 1.5rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
  .cta-box:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: translateY(-2px);
  }
}

.cta-box-accent {
  box-shadow: 0 0 0 2px rgba(250, 204, 21, 0.45) inset;
}

.cta-step {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 900;
  color: rgba(191, 219, 254, 0.95);
}

.cta-step-accent {
  font-size: 1rem;
  color: rgba(255, 245, 102, 0.85);
}

.cta-btn {
  width: 100%;
  padding: 1rem;
  border-radius: 0.9rem;
  font-weight: 900;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1rem;
  transition: transform 0.2s ease, filter 0.2s ease, background-color 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
  .cta-btn:hover {
    transform: scale(1.03);
  }
}

.cta-btn-dark {
  background: #0b1220;
  border: 1px solid #334155;
  box-shadow: 0 14px 30px rgba(2, 6, 23, 0.35);
  color: var(--slate-000);
}

.cta-btn-gold {
  background: linear-gradient(180deg, var(--slate-000), rgba(255, 245, 102, 0.95));
  color: var(--blue-900);
  box-shadow: 0 18px 40px rgba(250, 204, 21, 0.22);
}

.cta-ico {
  width: 1.5rem;
  height: 1.5rem;
}

.cta-ico-small {
  width: 1.25rem;
  height: 1.25rem;
}

/* campaign-entry: PC */
@media (min-width: 768px) {
  .campaign-entry-title {
    font-size: 2.5rem;
  }

  .campaign-entry-row {
    flex-direction: row;
  }

  .campaign-entry-row .cta-box {
    flex: 1;
    min-width: 0;
  }

  .campaign-entry-lead {
    font-size: 1.25rem;
  }
}

/* ==============================================
   Sticky Footer
=============================================== */
.sticky-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 50;
  width: 100%;
  padding: 1rem 0 calc(2rem + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid rgba(226, 232, 240, 1);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.15);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.sticky-footer.is-visible {
  transform: translateY(0);
}

.sticky-footer-inner {
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.sticky-footer-date {
  display: none;
}

.sticky-footer-kicker {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  color: var(--slate-400);
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sticky-footer-value {
  margin: 0;
  color: var(--slate-800);
  font-weight: 900;
}

.sticky-footer-actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
}

.sticky-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  font-weight: 900;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.sticky-btn-ghost {
  background: #f1f5f9;
  color: var(--slate-700);
}

@media (hover: hover) and (pointer: fine) {
  .sticky-btn-ghost:hover {
    background: #e2e8f0;
  }
}

.sticky-btn-primary {
  background: linear-gradient(180deg, var(--blue-500), var(--blue-900));
  color: var(--slate-000);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

@media (hover: hover) and (pointer: fine) {
  .sticky-btn-primary:hover {
    background: linear-gradient(180deg, var(--blue-700), var(--blue-900));
  }
}

.sticky-ico {
  width: 1.25rem;
  height: 1.25rem;
}

/* Sticky Footer: PC */
@media (min-width: 768px) {
  .sticky-footer {
    padding: 1.5rem 0 calc(1.5rem + env(safe-area-inset-bottom));
  }

  .sticky-footer-inner {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }

  .sticky-footer-date {
    display: block;
    flex: 0 0 auto;
  }

  .sticky-footer-actions {
    flex: 1 1 auto;
    max-width: 100%;
    min-width: 0;
    justify-content: flex-end;
  }

  .sticky-btn {
    flex: 1 1 0;
    min-width: 0;
    white-space: nowrap;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    border-radius: 0.6rem;
  }
}

/* ==============================================
   Animations
=============================================== */
@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-8px);
  }
}

@keyframes bounce-slow {

  0%,
  100% {
    transform: translateY(-5%) rotate(12deg) scale(0.9);
  }

  50% {
    transform: translateY(5%) rotate(12deg) scale(0.9);
  }
}

@keyframes fall {
  0% {
    opacity: 0;
    transform: translate3d(0, -60px, 0) rotateZ(0deg);
  }

  10%,
  90% {
    opacity: 0.9;
  }

  100% {
    opacity: 0;
    transform: translate3d(0, calc(var(--vh, 1vh) * 110), 0) rotateZ(360deg);
  }
}

@keyframes scroll-line {
  0% {
    transform: translateY(-100%);
  }

  100% {
    transform: translateY(100%);
  }
}

@keyframes sweep {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }

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

/* ==============================================
  backdrop-filter（対応ブラウザだけ適用）
============================================== */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  #header {
    background-color: rgba(255, 255, 255, 0.75);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }

  .sticky-footer {
    background: rgba(255, 255, 255, 0.96);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }

  .cta-box {
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
}