/* 2026-09-02：投資心態卡片視覺系統，以深墨藍、象牙紙與香檳金建立沉穩質感。 */
:root {
  color-scheme: dark;
  --color-petrol: #102329;
  --color-petrol-deep: #07171c;
  --color-ink: #17272c;
  --color-ivory: #f3efe6;
  --color-ivory-shadow: #ded6c6;
  --color-champagne: #b79b68;
  --color-champagne-bright: #d5bb83;
  --color-fog: #789098;
  --card-width: 82vw;
  --card-gap: 1rem;
  --side-space: calc((100vw - var(--card-width)) / 2);
  font-family: "Microsoft JhengHei", "Noto Sans TC", system-ui, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  min-height: 100%;
  background: var(--color-petrol-deep);
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  color: var(--color-ivory);
  background:
    radial-gradient(circle at 50% 18%, rgba(44, 82, 89, 0.48), transparent 42%),
    radial-gradient(circle at 8% 88%, rgba(183, 155, 104, 0.08), transparent 32%),
    linear-gradient(145deg, var(--color-petrol) 0%, var(--color-petrol-deep) 78%);
}

/* 2026-09-02：極淡交錯紋理模擬深色織物，避免使用大型背景圖片。 */
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.25;
  background-image:
    repeating-linear-gradient(28deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(118deg, rgba(0, 0, 0, 0.06) 0 1px, transparent 1px 5px);
}

button {
  font: inherit;
}

.mindset-page {
  display: grid;
  min-width: 0;
  min-height: 100dvh;
  padding: max(1.25rem, env(safe-area-inset-top)) 0 max(1rem, env(safe-area-inset-bottom));
  place-items: center stretch;
}

.carousel-shell {
  position: relative;
  width: 100%;
  min-width: 0;
  overflow: hidden;
}

/* 2026-09-02：手機優先，窄螢幕保留鄰卡露邊以提示可左右滑動。 */
.card-track {
  display: flex;
  align-items: stretch;
  gap: var(--card-gap);
  width: 100%;
  padding: 0 var(--side-space) 1.5rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-behavior: smooth;
  scroll-padding-inline: var(--side-space);
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  touch-action: pan-x pan-y;
  cursor: grab;
}

.card-track::-webkit-scrollbar {
  display: none;
}

.card-track:focus-visible {
  outline: 2px solid var(--color-champagne-bright);
  outline-offset: -0.35rem;
}

.card-track.is-dragging {
  scroll-behavior: auto;
  scroll-snap-type: none;
  cursor: grabbing;
  user-select: none;
}

/* 2026-09-02：象牙紙卡片使用細邊、紙張纖維與分層陰影呈現實體質感。 */
.mindset-card {
  position: relative;
  isolation: isolate;
  flex: 0 0 var(--card-width);
  width: var(--card-width);
  min-height: clamp(34rem, 72dvh, 46rem);
  padding: 1.35rem 1.25rem 1.75rem;
  overflow: hidden;
  color: var(--color-ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(255, 255, 255, 0.75), transparent 28%),
    linear-gradient(150deg, #f8f5ee, var(--color-ivory) 55%, #ebe4d8);
  border: 1px solid var(--color-champagne-bright);
  border-radius: 1.25rem;
  box-shadow:
    0 1.5rem 4rem rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(69, 47, 18, 0.4),
    inset 0 0 0 2px rgba(255, 255, 255, 0.5);
  opacity: 0.7;
  transform: scale(0.965);
  transform-origin: center;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  transition: opacity 280ms ease, transform 280ms ease, box-shadow 280ms ease;
}

.mindset-card::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.22;
  background-image:
    repeating-linear-gradient(8deg, rgba(84, 66, 35, 0.08) 0 1px, transparent 1px 5px),
    radial-gradient(circle at 30% 40%, rgba(78, 61, 34, 0.12) 0 0.7px, transparent 0.9px);
  background-size: auto, 0.35rem 0.35rem;
  mix-blend-mode: multiply;
}

.mindset-card.is-active {
  opacity: 1;
  transform: scale(1);
  box-shadow:
    0 1.75rem 5rem rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(69, 47, 18, 0.48),
    inset 0 0 0 2px rgba(255, 255, 255, 0.58);
}

.card-serial {
  position: relative;
  z-index: 2;
  display: block;
  min-height: 1.25rem;
  color: #806a42;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
}

.illustration-frame {
  width: min(100%, 35rem);
  margin: -0.25rem auto 0;
}

.price-illustration {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.price-line {
  fill: none;
  stroke: #9b7f49;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.price-line--shadow {
  stroke: rgba(255, 255, 255, 0.9);
  stroke-width: 5;
}

.price-line--secondary {
  stroke: #66787c;
  stroke-width: 1.8;
  stroke-dasharray: 7 7;
  opacity: 0.58;
}

.price-node {
  fill: url("#nodeGradient");
  fill: var(--color-champagne);
  stroke: #70572e;
  stroke-width: 1.5;
  filter: drop-shadow(0 2px 2px rgba(49, 35, 14, 0.24));
}

.price-node-halo {
  fill: none;
  stroke: rgba(155, 127, 73, 0.45);
  stroke-width: 2;
}

.price-node--secondary {
  fill: #819398;
  stroke: #53676c;
  filter: none;
  opacity: 0.78;
}

.price-arrow {
  fill: none;
  stroke: #9b7f49;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.price-label {
  fill: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 25px;
  text-anchor: middle;
}

.title-rule {
  width: 4.5rem;
  height: 1px;
  margin: 0.1rem auto 1rem;
  background: linear-gradient(90deg, transparent, var(--color-champagne), transparent);
}

.card-title {
  max-width: 18ch;
  margin: 0 auto;
  color: #10252b;
  font-family: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  font-size: clamp(1.55rem, 6.2vw, 2rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.035em;
  text-align: center;
  text-wrap: balance;
}

.card-copy {
  width: min(100%, 34rem);
  margin: 1.4rem auto 0;
  font-size: clamp(1rem, 3.8vw, 1.08rem);
  font-weight: 500;
  line-height: 1.86;
  letter-spacing: 0.012em;
}

.card-copy p {
  margin: 0;
}

.card-copy p + p {
  margin-top: 0.75rem;
}

/* 2026-09-02：長文卡縮短插圖留白，但維持至少 16px 的正文閱讀尺寸。 */
.mindset-card--dense .illustration-frame {
  width: min(86%, 29rem);
  margin-top: -0.8rem;
  margin-bottom: -0.9rem;
}

.mindset-card--dense .card-copy {
  line-height: 1.72;
}

.mindset-card--dense .card-copy p + p {
  margin-top: 0.58rem;
}

/* 2026-09-02：手機導覽置於卡片下方，按鈕符合 44px 觸控尺寸。 */
.nav-button {
  position: absolute;
  bottom: 0.35rem;
  z-index: 4;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  padding: 0;
  color: var(--color-champagne-bright);
  background: rgba(5, 21, 26, 0.7);
  border: 1px solid var(--color-champagne);
  border-radius: 50%;
  box-shadow: 0 0.75rem 1.75rem rgba(0, 0, 0, 0.22);
  place-items: center;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, opacity 180ms ease, transform 180ms ease;
}

.nav-button svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-button--previous {
  left: max(1rem, env(safe-area-inset-left));
}

.nav-button--next {
  right: max(1rem, env(safe-area-inset-right));
}

.nav-button:hover:not(:disabled) {
  color: #0b1e24;
  background: var(--color-champagne-bright);
  transform: translateY(-2px);
}

.nav-button:focus-visible,
.page-dot:focus-visible {
  outline: 2px solid var(--color-ivory);
  outline-offset: 0.2rem;
}

.nav-button:disabled {
  opacity: 0.28;
  cursor: default;
}

.carousel-status {
  display: grid;
  min-height: 4rem;
  place-content: center;
  place-items: center;
}

.page-number {
  color: var(--color-champagne-bright);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  letter-spacing: 0.08em;
}

.page-dots {
  display: flex;
  gap: 0.1rem;
  margin-top: 0.2rem;
}

.page-dot {
  position: relative;
  width: 1.2rem;
  min-width: 1.2rem;
  height: 1.2rem;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.page-dot::after {
  display: block;
  width: 0.42rem;
  height: 0.42rem;
  margin: auto;
  content: "";
  background: var(--color-fog);
  border-radius: inherit;
  opacity: 0.45;
  transition: width 180ms ease, background-color 180ms ease, opacity 180ms ease;
}

.page-dot.is-active::after {
  width: 0.95rem;
  background: var(--color-champagne-bright);
  opacity: 1;
}

/* 2026-09-02：平板增加卡片寬度與文字留白。 */
@media (min-width: 48rem) {
  :root {
    --card-width: min(68vw, 42rem);
    --card-gap: 2rem;
  }

  .mindset-page {
    padding-block: 1.5rem;
  }

  .mindset-card {
    padding: 1.75rem 3rem 2.5rem;
    border-radius: 1.45rem;
  }

  .card-title {
    font-size: clamp(2rem, 3.4vw, 2.6rem);
  }

  .card-copy {
    margin-top: 1.75rem;
    font-size: 1.08rem;
  }

  .mindset-card--dense .card-copy {
    margin-top: 1.25rem;
    font-size: 1rem;
  }
}

/* 2026-09-02：桌機把導覽箭頭移到主卡左右兩側，維持預覽圖配置。 */
@media (min-width: 64rem) {
  :root {
    --card-width: min(56vw, 45rem);
    --card-gap: 2.75rem;
  }

  .card-track {
    padding-bottom: 1.75rem;
  }

  .mindset-card {
    min-height: min(72dvh, 46rem);
    padding-inline: 4.5rem;
  }

  .card-serial {
    font-size: 0.88rem;
  }

  .card-copy {
    font-size: 1.1rem;
  }

  .nav-button {
    bottom: auto;
    top: calc(50% - 2.75rem);
    width: 3.75rem;
    height: 3.75rem;
  }

  .nav-button--previous {
    left: calc(50% - var(--card-width) / 2 - 5.9rem);
  }

  .nav-button--next {
    right: calc(50% - var(--card-width) / 2 - 5.9rem);
  }
}

/* 2026-09-02：低高度裝置縮短插圖與留白，避免文字被迫擠壓。 */
@media (max-height: 43rem) {
  .mindset-page {
    align-items: start;
  }

  .mindset-card {
    min-height: 32rem;
  }

  .illustration-frame {
    width: min(88%, 29rem);
    margin-top: -1.1rem;
    margin-bottom: -0.75rem;
  }

  .card-copy {
    line-height: 1.68;
  }
}

/* 2026-09-02：尊重系統的減少動畫設定。 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}