:root {
  --bg: #edf2f5;
  --text: #12202d;
  --muted: #6a7d8d;
  --accent: #112a46;
  --accent-2: #cb6048;
  --line: rgba(17, 32, 45, 0.1);
  --shadow-lg: 0 28px 80px rgba(17, 31, 45, 0.14);
  --shadow-md: 0 16px 38px rgba(17, 31, 45, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --phone-max: 430px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.98), transparent 28%),
    radial-gradient(circle at top right, rgba(214, 227, 239, 0.92), transparent 26%),
    linear-gradient(180deg, #f5f8fb 0%, #edf2f5 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 34vw;
  height: 34vw;
  min-width: 220px;
  min-height: 220px;
  border-radius: 50%;
  filter: blur(28px);
  opacity: 0.42;
  pointer-events: none;
  z-index: -1;
}

body::before {
  top: -10vw;
  right: -8vw;
  background: radial-gradient(circle, rgba(203, 96, 72, 0.18), transparent 68%);
}

body::after {
  left: -10vw;
  bottom: 8vh;
  background: radial-gradient(circle, rgba(17, 42, 70, 0.14), transparent 70%);
}

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

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

.app-shell {
  width: min(100%, 1600px);
  margin: 0 auto;
  padding: 20px 24px 48px;
}

.topbar {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 16px;
  align-items: center;
  padding: 14px 18px 10px;
  background: rgba(14, 24, 35, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  box-shadow: 0 18px 44px rgba(8, 16, 24, 0.26);
}

.brand-title {
  margin: 0;
  font-family: "Bahnschrift", "Avenir Next Condensed", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-size: clamp(1.2rem, 1.7vw, 1.55rem);
  line-height: 1;
  color: white;
  letter-spacing: 0.02em;
}

.toolbar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.toolbar-btn,
.counter {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
}

.toolbar-btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: white;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.toolbar-btn:hover,
.toolbar-btn:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  outline: none;
}

.counter {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  font-weight: 700;
}

.counter strong {
  font-size: 1rem;
}

.counter span {
  color: rgba(255, 255, 255, 0.62);
}

.progress-track {
  grid-column: 1 / -1;
  height: 3px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.progress-bar {
  width: 4.35%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ffffff 0%, #adc0d2 100%);
}

.viewport-shell {
  margin-top: 18px;
}

.desktop-deck,
.mobile-deck {
  min-width: 0;
}

.desktop-deck {
  display: grid;
  gap: 28px;
}

.desktop-slide {
  scroll-margin-top: 84px;
}

.desktop-frame {
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-lg);
}

.desktop-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #ffffff;
}

.mobile-deck {
  display: none;
  gap: 16px;
}

.slide-card {
  position: relative;
  display: grid;
  min-height: calc(100svh - 120px);
  aspect-ratio: 9 / 16;
  padding: 14px;
  border-radius: 28px;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(243, 246, 249, 0.98) 100%);
  border: 1px solid rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  scroll-margin-top: 82px;
}

.slide-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(130deg, transparent 10%, rgba(11, 39, 70, 0.04) 50%, transparent 88%),
    radial-gradient(circle at top right, rgba(11, 39, 70, 0.05), transparent 24%);
  pointer-events: none;
}

.slide-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.46);
  pointer-events: none;
}

.slide-card > * {
  position: relative;
  z-index: 1;
}

.card-watermark {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-family: "Bahnschrift", "Avenir Next Condensed", sans-serif;
  font-size: 5rem;
  line-height: 0.9;
  font-weight: 800;
  letter-spacing: -0.06em;
  color: rgba(17, 31, 45, 0.05);
  pointer-events: none;
  z-index: 0;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.card-page {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(234, 241, 246, 0.9));
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 0 8px 16px rgba(16, 28, 42, 0.08);
}

.card-outline {
  width: 64px;
  height: 4px;
  border-radius: 999px;
  background: rgba(17, 31, 45, 0.14);
}

.card-visual {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  aspect-ratio: 9 / 11;
  background:
    linear-gradient(180deg, rgba(17, 42, 70, 0.18), rgba(17, 42, 70, 0.02)),
    center / cover no-repeat var(--card-art),
    linear-gradient(135deg, #dce6ee 0%, #f6f8fb 100%);
  box-shadow: 0 18px 32px rgba(17, 31, 45, 0.14);
}

.layout-editorial .card-visual,
.layout-stats .card-visual {
  aspect-ratio: 16 / 10;
}

.layout-case .card-visual {
  aspect-ratio: 1 / 1;
}

.visual-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 13, 22, 0.06) 0%, rgba(7, 13, 22, 0.12) 55%, rgba(7, 13, 22, 0.24) 100%);
  pointer-events: none;
}

.poster-copy {
  position: absolute;
  inset: auto 12px 12px 12px;
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.82));
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.44);
  box-shadow: 0 20px 36px rgba(16, 28, 42, 0.16);
}

.card-body {
  display: grid;
  grid-template-rows: auto auto auto auto 1fr auto;
  gap: 12px;
  margin-top: 12px;
  min-height: 0;
}

.body-spacer {
  min-height: 0;
}

.card-kicker {
  margin: 0;
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(11, 39, 70, 0.05);
  border: 1px solid rgba(11, 39, 70, 0.06);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.poster-copy .card-kicker {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(11, 39, 70, 0.08);
  color: rgba(11, 39, 70, 0.72);
}

.card-title {
  margin: 0;
  font-family: "Bahnschrift", "Avenir Next Condensed", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-size: clamp(2rem, 8vw, 2.7rem);
  line-height: 0.98;
  color: #111920;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.poster-copy .card-title {
  font-size: clamp(2rem, 8.6vw, 2.85rem);
  line-height: 0.94;
}

.card-subtitle {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.58;
  color: #4d5d6d;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.poster-copy .card-subtitle {
  color: #334658;
}

.metric-row,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.metric-pill {
  min-width: 0;
  flex: 1 1 calc(50% - 10px);
  padding: 12px;
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(225, 233, 241, 0.88));
  border: 1px solid rgba(11, 39, 70, 0.09);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.metric-value {
  margin: 0;
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 800;
  color: var(--accent);
}

.metric-label {
  margin: 6px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.tag {
  padding: 7px 12px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 241, 238, 0.98), rgba(255, 228, 221, 0.95));
  color: var(--accent-2);
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid rgba(201, 85, 71, 0.15);
  box-shadow: 0 6px 14px rgba(201, 85, 71, 0.08);
}

.bullet-list {
  display: grid;
  gap: 10px;
  align-content: start;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bullet-item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid rgba(17, 31, 45, 0.08);
}

.layout-checklist .bullet-item {
  grid-template-columns: 26px minmax(0, 1fr);
  padding: 12px;
  border: 1px solid rgba(17, 31, 45, 0.06);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(244, 247, 250, 0.76));
}

.bullet-item:last-child {
  border-bottom: 0;
}

.bullet-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(255, 218, 212, 0.98), rgba(252, 189, 177, 0.98));
  color: var(--accent-2);
  display: inline-grid;
  place-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  box-shadow: 0 6px 12px rgba(201, 85, 71, 0.15);
}

.layout-checklist .bullet-dot {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  font-size: 0.72rem;
}

.bullet-text {
  font-size: 0.92rem;
  line-height: 1.55;
  color: #223444;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 8px;
}

.card-foot-note {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.layout-case .card-body {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.38));
  border: 1px solid rgba(17, 31, 45, 0.07);
  border-radius: 24px;
  padding: 16px 14px 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.56);
}

.layout-stats .metric-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.layout-stats .metric-pill:first-child {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #10263c 0%, #1a4266 100%);
  border-color: rgba(255, 255, 255, 0.08);
}

.layout-stats .metric-pill:first-child .metric-value {
  color: white;
}

.layout-stats .metric-pill:first-child .metric-label {
  color: rgba(255, 255, 255, 0.72);
}

.slide-card.theme-dark {
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.08), transparent 30%),
    linear-gradient(180deg, #0f1c2a 0%, #122538 100%);
  color: white;
}

.slide-card.theme-dark::before {
  background:
    linear-gradient(130deg, transparent 20%, rgba(255, 255, 255, 0.05) 50%, transparent 85%),
    radial-gradient(circle at bottom left, rgba(255, 255, 255, 0.04), transparent 28%);
}

.slide-card.theme-dark::after {
  border-color: rgba(255, 255, 255, 0.08);
}

.slide-card.theme-dark .card-page,
.slide-card.theme-dark .metric-pill {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
  color: white;
}

.slide-card.theme-dark .card-kicker,
.slide-card.theme-dark .card-subtitle,
.slide-card.theme-dark .metric-label,
.slide-card.theme-dark .card-foot-note {
  color: rgba(255, 255, 255, 0.74);
}

.slide-card.theme-dark .card-title,
.slide-card.theme-dark .metric-value,
.slide-card.theme-dark .bullet-text {
  color: white;
}

.slide-card.theme-dark .card-watermark {
  color: rgba(255, 255, 255, 0.06);
}

.slide-card.theme-dark .bullet-item {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.slide-card.theme-dark .bullet-dot {
  background: rgba(255, 255, 255, 0.14);
  color: white;
}

.slide-card.theme-dark .tag {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.slide-card.theme-dark .poster-copy {
  background: linear-gradient(180deg, rgba(8, 16, 24, 0.18), rgba(8, 16, 24, 0.82));
  border-color: rgba(255, 255, 255, 0.12);
}

.slide-card.theme-dark .card-kicker,
.slide-card.theme-dark .poster-copy .card-kicker {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

.slide-card.theme-dark .poster-copy .card-kicker,
.slide-card.theme-dark .poster-copy .card-subtitle {
  color: rgba(255, 255, 255, 0.76);
}

@media (hover: hover) and (pointer: fine) {
  .desktop-frame,
  .slide-card {
    transition:
      transform 220ms ease,
      box-shadow 220ms ease;
  }

  .desktop-frame:hover,
  .slide-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 34px 92px rgba(17, 31, 45, 0.18);
  }
}

@media (min-width: 821px) {
  .desktop-deck {
    display: grid;
  }

  .mobile-deck {
    display: none;
  }
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100%, var(--phone-max));
    padding:
      max(10px, env(safe-area-inset-top)) 10px
      calc(28px + env(safe-area-inset-bottom));
  }

  .topbar {
    top: max(8px, env(safe-area-inset-top));
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 10px;
    padding: 12px 12px 9px;
    border-radius: 22px;
  }

  .brand-title {
    font-size: 1.25rem;
  }

  .toolbar {
    gap: 6px;
  }

  .toolbar-btn,
  .counter {
    min-height: 34px;
    padding: 0 12px;
    font-size: 0.84rem;
  }

  .viewport-shell {
    margin-top: 14px;
  }

  .desktop-deck {
    display: none;
  }

  .mobile-deck {
    display: grid;
  }

  .slide-card {
    min-height: 0;
    aspect-ratio: auto;
    padding: 12px;
    border-radius: 24px;
  }

  .slide-card::after {
    inset: 8px;
    border-radius: 18px;
  }

  .card-watermark {
    right: 10px;
    bottom: 8px;
    font-size: 3.5rem;
  }

  .card-top {
    margin-bottom: 8px;
  }

  .card-page {
    padding: 6px 10px;
    font-size: 0.76rem;
  }

  .card-outline {
    width: 44px;
  }

  .card-visual {
    display: flex;
    align-items: flex-end;
    min-height: 248px;
    aspect-ratio: auto;
    border-radius: 18px;
    background-position: center;
    background-size: cover;
  }

  .layout-editorial .card-visual,
  .layout-stats .card-visual,
  .layout-case .card-visual {
    min-height: 220px;
    aspect-ratio: auto;
  }

  .poster-copy {
    position: relative;
    inset: auto;
    width: calc(100% - 24px);
    margin: auto 12px 12px;
    padding: 12px;
    border-radius: 16px;
    gap: 7px;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .card-body {
    display: grid;
    grid-template-rows: none;
    gap: 10px;
    margin-top: 10px;
  }

  .body-spacer {
    display: none;
  }

  .card-kicker {
    max-width: 100%;
    white-space: normal;
  }

  .card-title,
  .poster-copy .card-title {
    font-size: clamp(1.75rem, 8vw, 2.3rem);
    line-height: 1.02;
  }

  .card-subtitle,
  .poster-copy .card-subtitle,
  .bullet-text,
  .card-foot-note {
    font-size: 0.88rem;
    line-height: 1.52;
  }

  .tag-row,
  .metric-row {
    gap: 8px;
  }

  .tag {
    padding: 6px 10px;
    font-size: 0.76rem;
  }

  .metric-row,
  .layout-stats .metric-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .metric-pill {
    min-width: 0;
    padding: 11px;
    border-radius: 16px;
  }

  .metric-value {
    font-size: 1.55rem;
  }

  .bullet-list {
    gap: 8px;
  }

  .bullet-item {
    gap: 8px;
    padding: 10px 0;
  }

  .layout-checklist .bullet-item {
    padding: 10px;
    border-radius: 14px;
  }

  .card-foot {
    gap: 10px;
    padding-top: 6px;
  }
}

@media (max-width: 390px) {
  .app-shell {
    padding:
      max(8px, env(safe-area-inset-top)) 8px
      calc(24px + env(safe-area-inset-bottom));
  }

  .topbar {
    padding: 10px 10px 8px;
    gap: 8px;
  }

  .brand-title {
    font-size: 1.08rem;
  }

  .toolbar-btn,
  .counter {
    min-height: 32px;
    padding: 0 10px;
    font-size: 0.8rem;
  }

  .slide-card {
    padding: 10px;
    border-radius: 20px;
  }

  .slide-card::after {
    inset: 7px;
    border-radius: 15px;
  }

  .card-visual {
    min-height: 212px;
  }

  .layout-editorial .card-visual,
  .layout-stats .card-visual,
  .layout-case .card-visual {
    min-height: 194px;
  }

  .poster-copy {
    width: calc(100% - 18px);
    margin: auto 9px 9px;
    padding: 10px;
  }

  .card-title,
  .poster-copy .card-title {
    font-size: clamp(1.5rem, 7.4vw, 2rem);
  }

  .card-subtitle,
  .poster-copy .card-subtitle,
  .bullet-text,
  .card-foot-note {
    font-size: 0.84rem;
  }

  .card-watermark {
    font-size: 2.8rem;
  }
}

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

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