/* ============================================================
   岁月鉴初心 · 荣休启新程
   赵成钢主任退休欢送会 · 视觉设计系统
   设计语言：东方宫廷漆器 × 现代编辑设计
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  /* 色彩 - 整体调亮版 */
  --ink: #1B0F12;
  --void: #2A161B;
  --void-2: #3A1F26;
  --lacquer: #6B141A;
  --lacquer-deep: #4A0E14;
  --crimson: #8B1E26;
  --vermillion: #C53030;
  --vermillion-bright: #E14C42;
  --gold: #D4AF37;
  --gold-light: #F4E3A8;
  --gold-soft: #E8C77C;
  --gold-deep: #8B6F3F;
  --gold-bronze: #A87C3B;
  --ivory: #F5E6D3;
  --pearl: #FAF3E7;
  --rice: #EFE4CB;
  --jade: #1F4E3D;
  --shadow: rgba(0, 0, 0, 0.6);

  /* 字体栈 */
  --font-display: "Ma Shan Zheng", "Noto Serif SC", "STKaiti", "KaiTi", serif;
  --font-elegant: "ZCOOL XiaoWei", "Noto Serif SC", "STSong", "SimSun", serif;
  --font-serif: "Noto Serif SC", "STSong", "SimSun", serif;
  --font-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-latin: "Cinzel", "Cormorant Garamond", serif;
  --font-latin-body: "Cormorant Garamond", "Cinzel", serif;

  /* 动效 */
  --ease-elegant: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-emphasize: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-decel: cubic-bezier(0, 0, 0.2, 1);
  --ease-accel: cubic-bezier(0.4, 0, 1, 1);
  --slide-dur: 1100ms;

  /* 阴影 */
  --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-deep: 0 20px 60px rgba(0, 0, 0, 0.6);
  --shadow-gold: 0 0 24px rgba(212, 175, 55, 0.35);
  --glow-gold: 0 0 40px rgba(212, 175, 55, 0.5), 0 0 80px rgba(212, 175, 55, 0.2);
  --glow-red: 0 0 60px rgba(123, 24, 32, 0.6);
}

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

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-serif);
  font-weight: 400;
  font-feature-settings: "palt" 1, "kern" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  user-select: none;
}

body {
  position: relative;
  background:
    radial-gradient(ellipse at top, rgba(123, 24, 32, 0.55) 0%, transparent 55%),
    radial-gradient(ellipse at center, rgba(212, 175, 55, 0.08) 0%, transparent 65%),
    radial-gradient(ellipse at bottom, var(--void-2) 0%, transparent 60%),
    linear-gradient(180deg, #2C1418 0%, #1F0F14 50%, #2C1418 100%);
  background-attachment: fixed;
}

button {
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
  user-select: none;
  -webkit-user-drag: none;
}

/* ---------- 全局氛围 ---------- */
.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.ambient__noise {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.85 0 0 0 0 0.7 0 0 0 0 0.4 0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.ambient__vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(20, 6, 10, 0.32) 100%);
}

.ambient__particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-light) 0%, transparent 70%);
  opacity: 0;
  will-change: transform, opacity;
  animation: floatUp linear infinite;
}

@keyframes floatUp {
  0% {
    transform: translate3d(0, 100vh, 0) scale(0.5);
    opacity: 0;
  }
  10% {
    opacity: var(--p-opacity, 0.7);
  }
  90% {
    opacity: var(--p-opacity, 0.7);
  }
  100% {
    transform: translate3d(calc(var(--p-drift, 0) * 1px), -10vh, 0) scale(1.2);
    opacity: 0;
  }
}

/* ---------- 主舞台 ---------- */
.stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 2;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(40px, 6vh, 80px) clamp(24px, 4vw, 80px) calc(clamp(40px, 6vh, 80px) + 92px);
  opacity: 0;
  pointer-events: none;
  transform: scale(1.02);
  transition:
    opacity var(--slide-dur) var(--ease-elegant),
    transform var(--slide-dur) var(--ease-elegant);
  will-change: opacity, transform;
}

.slide[data-active] {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

/* ---------- 通用装饰：金边外框 ---------- */
.frame {
  position: absolute;
  inset: clamp(28px, 4vh, 56px) clamp(28px, 4vw, 56px);
  pointer-events: none;
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: 2px;
  z-index: 2;
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(212, 175, 55, 0.32);
  border-radius: 1px;
}

.frame--gold::before {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.15) inset;
}

.frame__corner {
  position: absolute;
  width: clamp(50px, 6vw, 90px);
  height: clamp(50px, 6vw, 90px);
  overflow: visible;
}

.frame__corner--tl { top: -8px; left: -8px; }
.frame__corner--tr { top: -8px; right: -8px; transform: scaleX(-1); }
.frame__corner--bl { bottom: -8px; left: -8px; transform: scaleY(-1); }
.frame__corner--br { bottom: -8px; right: -8px; transform: scale(-1, -1); }

/* ============================================================
   通用：幻灯片头部
   ============================================================ */
.slide__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: clamp(40px, 6vh, 70px);
  text-align: center;
}

.header__rule {
  width: clamp(120px, 24vw, 240px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 50%, transparent);
  opacity: 0.65;
}

.slide__eyebrow {
  font-family: var(--font-elegant);
  font-size: clamp(15px, 1.6vw, 19px);
  letter-spacing: 0.6em;
  color: var(--gold-soft);
  font-weight: 400;
  margin-left: 0.6em;
  opacity: 0.9;
}

.slide__title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  color: transparent;
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  letter-spacing: 0.25em;
  text-shadow: 0 4px 20px rgba(212, 175, 55, 0.15);
}

.slide__floor {
  position: absolute;
  bottom: 110px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.4;
  pointer-events: none;
}

/* ============================================================
   SLIDE 1 - 封面
   ============================================================ */
.slide--cover {
  background:
    radial-gradient(circle at 50% 30%, rgba(160, 36, 44, 0.55) 0%, transparent 55%),
    radial-gradient(circle at 50% 100%, rgba(42, 22, 27, 1) 0%, rgba(28, 16, 20, 1) 60%),
    linear-gradient(180deg, var(--void-2), var(--void));
}

.cover__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cover__rays {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 140vmax;
  height: 140vmax;
  transform: translate(-50%, -50%);
  background:
    conic-gradient(
      from 0deg at 50% 50%,
      transparent 0deg,
      rgba(212, 175, 55, 0.04) 8deg,
      transparent 16deg,
      rgba(212, 175, 55, 0.06) 30deg,
      transparent 42deg,
      rgba(212, 175, 55, 0.03) 60deg,
      transparent 75deg,
      rgba(212, 175, 55, 0.05) 100deg,
      transparent 115deg,
      rgba(212, 175, 55, 0.03) 140deg,
      transparent 160deg,
      rgba(212, 175, 55, 0.04) 200deg,
      transparent 220deg,
      rgba(212, 175, 55, 0.05) 260deg,
      transparent 280deg,
      rgba(212, 175, 55, 0.03) 310deg,
      transparent 330deg,
      rgba(212, 175, 55, 0.04) 360deg
    );
  animation: spinRays 80s linear infinite;
  opacity: 0;
  will-change: transform, opacity;
}

[data-active].slide--cover .cover__rays {
  opacity: 1;
  transition: opacity 2s ease 0.4s;
}

@keyframes spinRays {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.cover__glow {
  position: absolute;
  top: 30%;
  left: 50%;
  width: 80vmin;
  height: 80vmin;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(212, 175, 55, 0.28) 0%, transparent 60%);
  filter: blur(40px);
  animation: glowPulse 6s ease-in-out infinite;
  will-change: opacity, transform;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}

.cover__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 1100px;
}

.cover__crest {
  margin-bottom: 28px;
  opacity: 0;
  transform: translateY(-12px);
}

[data-active].slide--cover .cover__crest {
  animation: fadeDown 1.4s var(--ease-elegant) 0.2s forwards;
}

@keyframes fadeDown {
  to { opacity: 0.9; transform: translateY(0); }
}

.cover__eyebrow {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 36px;
  opacity: 0;
}

[data-active].slide--cover .cover__eyebrow {
  animation: fadeIn 1.2s var(--ease-elegant) 0.5s forwards;
}

.cover__eyebrow .line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-soft));
}

.cover__eyebrow .line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold-soft));
}

.eyebrow-text {
  font-family: var(--font-elegant);
  font-size: 19px;
  letter-spacing: 0.8em;
  color: var(--gold-soft);
  margin-left: 0.8em;
}

.cover__title {
  font-family: var(--font-display);
  font-weight: 400;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 50px;
}

.title-row {
  display: flex;
  font-size: clamp(56px, 9vw, 120px);
  letter-spacing: 0.18em;
  line-height: 1;
}

.title-row .char {
  display: inline-block;
  background: linear-gradient(
    180deg,
    var(--gold-light) 0%,
    var(--gold-soft) 30%,
    var(--gold) 55%,
    var(--gold-deep) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 6px 30px rgba(212, 175, 55, 0.25);
  opacity: 0;
  transform: translateY(40px) rotateX(60deg);
  transform-origin: bottom;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
}

.title-divider {
  display: flex;
  justify-content: center;
  padding: 14px 0;
  opacity: 0;
  transform: scaleX(0);
  transform-origin: center;
}

[data-active].slide--cover .title-row:nth-child(1) .char {
  animation: charReveal 1s var(--ease-emphasize) forwards;
}

[data-active].slide--cover .title-row:nth-child(3) .char {
  animation: charReveal 1s var(--ease-emphasize) forwards;
}

[data-active].slide--cover .title-row .char:nth-child(1) { animation-delay: 0.8s; }
[data-active].slide--cover .title-row .char:nth-child(2) { animation-delay: 0.92s; }
[data-active].slide--cover .title-row .char:nth-child(3) { animation-delay: 1.04s; }
[data-active].slide--cover .title-row .char:nth-child(4) { animation-delay: 1.16s; }
[data-active].slide--cover .title-row .char:nth-child(5) { animation-delay: 1.28s; }

[data-active].slide--cover .title-row:nth-child(3) .char:nth-child(1) { animation-delay: 1.6s; }
[data-active].slide--cover .title-row:nth-child(3) .char:nth-child(2) { animation-delay: 1.72s; }
[data-active].slide--cover .title-row:nth-child(3) .char:nth-child(3) { animation-delay: 1.84s; }
[data-active].slide--cover .title-row:nth-child(3) .char:nth-child(4) { animation-delay: 1.96s; }
[data-active].slide--cover .title-row:nth-child(3) .char:nth-child(5) { animation-delay: 2.08s; }

[data-active].slide--cover .title-divider {
  animation: scaleInX 0.8s var(--ease-emphasize) 1.45s forwards;
}

@keyframes charReveal {
  to {
    opacity: 1;
    transform: translateY(0) rotateX(0);
  }
}

@keyframes scaleInX {
  to {
    opacity: 1;
    transform: scaleX(1);
  }
}

.cover__subtitle {
  font-family: var(--font-elegant);
  font-size: clamp(20px, 2.4vw, 32px);
  letter-spacing: 0.5em;
  color: var(--ivory);
  margin-bottom: 60px;
  opacity: 0;
  display: flex;
  align-items: center;
}

.cover__subtitle .space {
  display: inline-block;
  width: 1.2em;
}

[data-active].slide--cover .cover__subtitle {
  animation: fadeUp 1.2s var(--ease-elegant) 2.4s forwards;
}

.cover__meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 50px;
  opacity: 0;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(17px, 1.6vw, 22px);
  color: var(--rice);
}

[data-active].slide--cover .cover__meta {
  animation: fadeUp 1.2s var(--ease-elegant) 2.8s forwards;
}

.cover__signature {
  opacity: 0;
  font-family: var(--font-elegant);
  font-size: clamp(15px, 1.4vw, 19px);
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  margin-top: 8px;
}

[data-active].slide--cover .cover__signature {
  animation: fadeUp 1.2s var(--ease-elegant) 3.2s forwards;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 18px;
  letter-spacing: 0.15em;
}

.meta-label {
  color: var(--gold-soft);
  font-family: var(--font-elegant);
  letter-spacing: 0.3em;
}

.meta-sep {
  color: var(--gold);
}

.meta-value {
  color: var(--ivory);
  letter-spacing: 0.2em;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* ============================================================
   SLIDE 2 - 议程一、二
   ============================================================ */
.slide--agenda {
  background:
    radial-gradient(ellipse at center, rgba(123, 24, 32, 0.28) 0%, transparent 60%),
    radial-gradient(ellipse at top, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--void), var(--void-2) 60%, var(--void));
}

.agenda-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
  max-width: 900px;
  width: 100%;
}

.agenda-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: center;
  gap: 40px;
  padding: 36px 50px 36px 36px;
  position: relative;
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.05) 0%, transparent 50%, rgba(123, 24, 32, 0.06) 100%);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 2px;
  opacity: 0;
  transform: translateX(-40px);
  will-change: transform, opacity;
}

.agenda-card:nth-child(2) {
  transform: translateX(40px);
}

[data-active].slide--agenda .agenda-card {
  animation: slideInCard 1.2s var(--ease-elegant) calc(0.3s + var(--i) * 0.25s) forwards;
}

@keyframes slideInCard {
  to { opacity: 1; transform: translateX(0); }
}

.agenda-card::before,
.agenda-card::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 1px solid var(--gold);
  opacity: 0.6;
}

.agenda-card::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.agenda-card::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

.agenda-card__num {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.num-zh {
  font-family: var(--font-display);
  font-size: clamp(80px, 9vw, 130px);
  line-height: 1;
  background: linear-gradient(180deg, var(--gold-light), var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 4px 24px rgba(212, 175, 55, 0.3);
  filter: drop-shadow(0 2px 0 rgba(0, 0, 0, 0.5));
}

.num-en {
  font-family: var(--font-latin);
  font-size: 16px;
  letter-spacing: 0.4em;
  color: var(--gold-deep);
  margin-top: 6px;
  opacity: 0.7;
}

.agenda-card__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.agenda-card__title {
  font-family: var(--font-elegant);
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: 0.3em;
  color: var(--gold-light);
  font-weight: 400;
}

.agenda-card__text {
  font-family: var(--font-serif);
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 2;
  letter-spacing: 0.1em;
  color: var(--ivory);
  font-weight: 300;
}

.agenda-card__text em {
  color: var(--gold-soft);
  font-style: normal;
  font-family: var(--font-display);
  font-size: 1.15em;
  margin: 0 0.2em;
  letter-spacing: 0.15em;
}

.agenda-card__deco {
  margin-top: 8px;
  opacity: 0.5;
}

/* ============================================================
   SLIDE 3 - 领导致辞
   ============================================================ */
.slide--leader {
  background:
    radial-gradient(circle at 50% 35%, rgba(160, 36, 44, 0.45) 0%, transparent 60%),
    radial-gradient(circle at 50% 95%, rgba(212, 175, 55, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--lacquer-deep), var(--void) 70%);
}

.leader__spotlight {
  position: absolute;
  top: -10%;
  left: 50%;
  width: 80vmin;
  height: 120vmin;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at top, rgba(212, 175, 55, 0.18) 0%, transparent 60%);
  filter: blur(20px);
  pointer-events: none;
  opacity: 0;
}

[data-active].slide--leader .leader__spotlight {
  animation: spotlightIn 2s var(--ease-elegant) 0.2s forwards;
}

@keyframes spotlightIn {
  to { opacity: 1; }
}

.leader__scrolls {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.scroll {
  position: absolute;
  top: 50%;
  width: 30px;
  height: clamp(280px, 50vh, 480px);
  transform: translateY(-50%) scaleY(0);
  transform-origin: top;
  filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.6));
}

.scroll--left { left: clamp(40px, 8vw, 120px); }
.scroll--right { right: clamp(40px, 8vw, 120px); }

[data-active].slide--leader .scroll {
  animation: scrollDown 1.4s var(--ease-emphasize) 0.4s forwards;
}

@keyframes scrollDown {
  to { transform: translateY(-50%) scaleY(1); }
}

.leader__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 30px;
}

.leader__eyebrow {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-elegant);
  font-size: clamp(16px, 1.6vw, 20px);
  letter-spacing: 0.6em;
  color: var(--gold-soft);
  margin-left: 0.6em;
  opacity: 0;
}

.leader__eyebrow .line {
  width: 64px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.leader__eyebrow .line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold));
}

[data-active].slide--leader .leader__eyebrow {
  animation: fadeIn 1.2s var(--ease-elegant) 1s forwards;
}

.leader__title {
  display: flex;
  font-family: var(--font-display);
  font-weight: 400;
  gap: 0;
  font-size: clamp(60px, 9vw, 130px);
  letter-spacing: 0.15em;
  line-height: 1;
}

.leader__title .ch {
  display: inline-block;
  background: linear-gradient(180deg, var(--gold-light), var(--gold) 50%, var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
  opacity: 0;
  transform: translateY(30px);
}

.leader__title--accent {
  background: linear-gradient(180deg, var(--vermillion-bright), var(--vermillion), var(--crimson));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 12px rgba(123, 24, 32, 0.5));
}

[data-active].slide--leader .leader__title .ch {
  animation: chRise 1s var(--ease-emphasize) forwards;
}

[data-active].slide--leader .leader__title .ch:nth-child(1) { animation-delay: 1.2s; }
[data-active].slide--leader .leader__title .ch:nth-child(2) { animation-delay: 1.32s; }
[data-active].slide--leader .leader__title .ch:nth-child(3) { animation-delay: 1.44s; }
[data-active].slide--leader .leader__title .ch:nth-child(4) { animation-delay: 1.56s; }
[data-active].slide--leader .leader__title .ch:nth-child(5) { animation-delay: 1.68s; }
[data-active].slide--leader .leader__title .ch:nth-child(6) { animation-delay: 1.8s; }
[data-active].slide--leader .leader__title .ch:nth-child(7) { animation-delay: 2.0s; }
[data-active].slide--leader .leader__title .ch:nth-child(8) { animation-delay: 2.15s; }

@keyframes chRise {
  to { opacity: 1; transform: translateY(0); }
}

.leader__poem {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.2vw, 30px);
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  opacity: 0;
  margin-top: 18px;
}

[data-active].slide--leader .leader__poem {
  animation: fadeUp 1.2s var(--ease-elegant) 2.6s forwards;
}

.leader__ornament {
  margin-top: 12px;
  opacity: 0;
  transform: scaleX(0);
}

[data-active].slide--leader .leader__ornament {
  animation: scaleInX 1.2s var(--ease-emphasize) 2.9s forwards;
}

/* ============================================================
   SLIDE 4 - 图片轮播
   ============================================================ */
.slide--carousel {
  padding: 0;
}

.carousel {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--ink);
}

.carousel__track {
  position: absolute;
  inset: 0;
}

.carousel__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.6s var(--ease-elegant);
  will-change: opacity;
}

.carousel__slide.is-active {
  opacity: 1;
  z-index: 2;
}

.carousel__scene,
.carousel__img {
  position: absolute;
  inset: -5%;
  width: 110%;
  height: 110%;
  object-fit: cover;
  will-change: transform;
}

.carousel__img {
  z-index: 1;
}

.carousel__scene {
  z-index: 0;
}

/* CSS 渐变占位艺术（作为图片加载失败的回退） */
.scene--1 {
  background:
    radial-gradient(ellipse at 50% 80%, #2C1A0E 0%, transparent 60%),
    linear-gradient(180deg, #1A0F1A 0%, #3D1F18 30%, #6B3621 60%, #8B5A2B 100%);
}
.scene--1::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(244, 227, 168, 0.4) 0%, transparent 25%),
    linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.4) 100%);
}
.scene--1::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background:
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.5)),
    repeating-linear-gradient(90deg, #1A0F1A 0%, #1A0F1A 5%, #2C1A0E 10%, #1A0F1A 15%);
  clip-path: polygon(0 60%, 12% 30%, 25% 50%, 38% 25%, 52% 45%, 66% 20%, 78% 38%, 90% 28%, 100% 50%, 100% 100%, 0 100%);
}

.scene--2 {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(212, 175, 55, 0.15) 0%, transparent 50%),
    linear-gradient(135deg, #4F0E12 0%, #7A1820 40%, #C53030 70%, #E14C42 100%);
}
.scene--2::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(245, 230, 211, 0.25) 0%, transparent 20%),
    radial-gradient(circle at 60% 60%, rgba(245, 230, 211, 0.2) 0%, transparent 25%),
    radial-gradient(circle at 80% 20%, rgba(245, 230, 211, 0.15) 0%, transparent 18%),
    radial-gradient(circle at 30% 70%, rgba(212, 175, 55, 0.3) 0%, transparent 22%);
}

.scene--3 {
  background:
    linear-gradient(180deg, #1F2E3D 0%, #2C3E50 30%, #4A5A6B 60%, #6B7D8E 100%);
}
.scene--3::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(245, 230, 211, 0.3) 0%, transparent 35%);
}
.scene--3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background:
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.4));
  clip-path: polygon(0 75%, 18% 40%, 32% 65%, 48% 35%, 65% 55%, 82% 30%, 100% 50%, 100% 100%, 0 100%);
}

.scene--4 {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(31, 78, 61, 0.5) 0%, transparent 60%),
    linear-gradient(180deg, #0D1F18 0%, #1F4E3D 50%, #3A6B5A 100%);
}
.scene--4::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(105deg, transparent 0%, transparent 2%, rgba(245, 230, 211, 0.04) 2.1%, transparent 4%),
    repeating-linear-gradient(75deg, transparent 0%, transparent 3%, rgba(245, 230, 211, 0.05) 3.1%, transparent 6%);
}

.scene--5 {
  background:
    radial-gradient(ellipse at 50% 70%, rgba(245, 230, 211, 0.2) 0%, transparent 50%),
    linear-gradient(180deg, #2C0608 0%, #5C0E12 30%, #8B5A2B 65%, #D4AF37 95%, #F4E3A8 100%);
}
.scene--5::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 70%, rgba(244, 227, 168, 0.5) 0%, transparent 25%);
}
.scene--5::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 35%;
  background:
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.5));
  clip-path: polygon(0 70%, 25% 50%, 50% 65%, 75% 45%, 100% 55%, 100% 100%, 0 100%);
}

/* 文字遮罩层 */
.carousel__overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, transparent 25%, transparent 65%, rgba(0, 0, 0, 0.7) 100%),
    radial-gradient(ellipse at center, transparent 30%, rgba(0, 0, 0, 0.3) 90%);
}

/* Ken Burns 缓慢推拉 */
.carousel__slide.is-active .carousel__img,
.carousel__slide.is-active .carousel__scene {
  animation: kenBurns var(--kb-duration, 8.5s) ease-in-out forwards;
}

.carousel__slide:nth-child(1).is-active .carousel__img,
.carousel__slide:nth-child(1).is-active .carousel__scene {
  animation-name: kenBurns1;
}
.carousel__slide:nth-child(2).is-active .carousel__img,
.carousel__slide:nth-child(2).is-active .carousel__scene {
  animation-name: kenBurns2;
}
.carousel__slide:nth-child(3).is-active .carousel__img,
.carousel__slide:nth-child(3).is-active .carousel__scene {
  animation-name: kenBurns3;
}
.carousel__slide:nth-child(4).is-active .carousel__img,
.carousel__slide:nth-child(4).is-active .carousel__scene {
  animation-name: kenBurns4;
}
.carousel__slide:nth-child(5).is-active .carousel__img,
.carousel__slide:nth-child(5).is-active .carousel__scene {
  animation-name: kenBurns5;
}

@keyframes kenBurns1 {
  0% { transform: scale(1.05) translate(0, 0); }
  100% { transform: scale(1.22) translate(-3%, -2%); }
}
@keyframes kenBurns2 {
  0% { transform: scale(1.08) translate(1%, 0); }
  100% { transform: scale(1.2) translate(-2%, -3%); }
}
@keyframes kenBurns3 {
  0% { transform: scale(1.1) translate(-1%, 0); }
  100% { transform: scale(1.22) translate(3%, -2%); }
}
@keyframes kenBurns4 {
  0% { transform: scale(1.05) translate(0, -1%); }
  100% { transform: scale(1.2) translate(-2%, 2%); }
}
@keyframes kenBurns5 {
  0% { transform: scale(1.1) translate(0, 1%); }
  100% { transform: scale(1.22) translate(2%, -2%); }
}

/* 轮播标题 */
.carousel__header {
  position: absolute;
  top: clamp(40px, 6vh, 70px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 5;
  font-family: var(--font-elegant);
  font-size: clamp(15px, 1.6vw, 19px);
  letter-spacing: 0.6em;
  color: var(--gold-light);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.8);
}

.carousel__header .line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-light));
  box-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

.carousel__header .line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold-light));
}

.carousel__header .text {
  margin-left: 0.6em;
}

/* 标题文字 */
.carousel__caption {
  position: absolute;
  left: clamp(60px, 8vw, 120px);
  bottom: clamp(140px, 18vh, 200px);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}

.carousel__slide.is-active .cap-zh {
  animation: capRise 1.4s var(--ease-elegant) 0.3s both;
}

.carousel__slide.is-active .cap-poem {
  animation: capRise 1.4s var(--ease-elegant) 0.6s both;
}

.cap-zh {
  font-family: var(--font-display);
  font-size: clamp(60px, 7vw, 100px);
  letter-spacing: 0.18em;
  background: linear-gradient(180deg, var(--gold-light), var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.7));
  line-height: 1;
}

.cap-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 4px 0;
}

.cap-poem {
  font-family: var(--font-elegant);
  font-size: clamp(18px, 1.8vw, 24px);
  letter-spacing: 0.3em;
  color: var(--pearl);
}

@keyframes capRise {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 进度指示点 */
.carousel__progress {
  position: absolute;
  right: clamp(60px, 8vw, 120px);
  bottom: clamp(140px, 18vh, 200px);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.carousel__progress .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(245, 230, 211, 0.35);
  position: relative;
  transition: all 0.6s var(--ease-elegant);
}

.carousel__progress .dot::after {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px solid transparent;
  border-radius: 50%;
  transition: border-color 0.6s var(--ease-elegant);
}

.carousel__progress .dot.is-active {
  background: var(--gold);
  box-shadow: 0 0 16px var(--gold);
  transform: scale(1.3);
}

.carousel__progress .dot.is-active::after {
  border-color: rgba(212, 175, 55, 0.4);
}

/* 跳出循环按钮 */
.carousel__skip {
  position: absolute;
  bottom: clamp(140px, 17vh, 180px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
  padding: 0;
  background: transparent;
  cursor: pointer;
  transition: transform 0.4s var(--ease-elegant);
}

.skip__inner {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 40px;
  background:
    linear-gradient(135deg, rgba(28, 16, 20, 0.85), rgba(42, 22, 27, 0.85));
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 999px;
  color: var(--gold-light);
  font-family: var(--font-elegant);
  font-size: 18px;
  letter-spacing: 0.4em;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(212, 175, 55, 0.2);
  overflow: hidden;
  transition: all 0.4s var(--ease-elegant);
}

.skip__inner::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 999px;
  background: linear-gradient(135deg, transparent 30%, rgba(212, 175, 55, 0.08) 50%, transparent 70%);
  pointer-events: none;
}

.skip__text {
  margin-left: 0.4em;
  position: relative;
  z-index: 2;
}

.skip__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  color: var(--gold);
  position: relative;
  z-index: 2;
  transition: transform 0.4s var(--ease-elegant);
}

.skip__ripple {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  border: 1px solid var(--gold);
  opacity: 0;
  animation: skipRipple 3s ease-out infinite;
  pointer-events: none;
}

@keyframes skipRipple {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.25); }
}

.carousel__skip:hover {
  transform: translateX(-50%) translateY(-3px);
}

.carousel__skip:hover .skip__inner {
  background: linear-gradient(135deg, rgba(123, 24, 32, 0.6), rgba(79, 14, 18, 0.6));
  border-color: var(--gold);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.6),
    0 0 30px rgba(212, 175, 55, 0.4),
    inset 0 1px 0 rgba(212, 175, 55, 0.3);
}

.carousel__skip:hover .skip__icon {
  transform: translateX(4px);
}

[data-active].slide--carousel .carousel__skip {
  animation: fadeUp 1.2s var(--ease-elegant) 1.4s both;
}

/* ============================================================
   SLIDE 5 - 音频卡片
   ============================================================ */
.slide--audio {
  background:
    radial-gradient(ellipse at center, rgba(123, 24, 32, 0.3) 0%, transparent 60%),
    radial-gradient(ellipse at top, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--void), var(--void-2) 50%, var(--void));
}

.audio-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 50px);
  max-width: 1280px;
  width: 100%;
}

.audio-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 24px 28px;
  background:
    linear-gradient(180deg, rgba(31, 16, 20, 0.6) 0%, rgba(20, 8, 10, 0.6) 100%);
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: 2px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(40px);
  transition:
    border-color 0.6s var(--ease-elegant),
    box-shadow 0.6s var(--ease-elegant),
    transform 0.6s var(--ease-elegant);
  will-change: transform, opacity;
}

[data-active].slide--audio .audio-card {
  animation: fadeUpCard 1.2s var(--ease-elegant) calc(0.4s + var(--i) * 0.2s) forwards;
}

@keyframes fadeUpCard {
  to { opacity: 1; transform: translateY(0); }
}

.audio-card::before,
.audio-card::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  opacity: 0.5;
}

.audio-card::before {
  top: 6px;
  left: 6px;
  border-right: 0;
  border-bottom: 0;
}

.audio-card::after {
  bottom: 6px;
  right: 6px;
  border-left: 0;
  border-top: 0;
}

.audio-card:hover {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(212, 175, 55, 0.1);
  transform: translateY(-2px);
}

.audio-card.is-playing {
  border-color: var(--gold);
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(212, 175, 55, 0.3),
    inset 0 0 30px rgba(212, 175, 55, 0.05);
}

.audio-card__halo {
  position: absolute;
  top: 80px;
  left: 50%;
  width: 280px;
  height: 280px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(212, 175, 55, 0.3) 0%, transparent 60%);
  filter: blur(20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s var(--ease-elegant);
}

.audio-card.is-playing .audio-card__halo {
  opacity: 1;
  animation: halooPulse 3s ease-in-out infinite;
}

@keyframes halooPulse {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

/* 唱片 */
.audio-card__disc {
  position: relative;
  width: clamp(180px, 18vw, 220px);
  height: clamp(180px, 18vw, 220px);
  margin: 20px 0 32px;
}

.disc {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, #1A1A1A 0%, #0A0A0A 70%, #000 100%);
  box-shadow:
    inset 0 0 0 2px #2A2A2A,
    inset 0 0 30px rgba(0, 0, 0, 0.8),
    0 10px 40px rgba(0, 0, 0, 0.7);
  transition: transform 0.6s var(--ease-elegant);
}

.audio-card.is-playing .disc {
  animation: discSpin 6s linear infinite;
}

@keyframes discSpin {
  to { transform: rotate(360deg); }
}

/* 同心刻槽 */
.disc__rings {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background:
    repeating-radial-gradient(
      circle at center,
      transparent 0,
      transparent 2px,
      rgba(255, 255, 255, 0.04) 2.5px,
      transparent 3px
    );
}

.disc__shine {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    conic-gradient(
      from 45deg at 50% 50%,
      transparent 0deg,
      rgba(212, 175, 55, 0.15) 45deg,
      transparent 90deg,
      rgba(212, 175, 55, 0.08) 180deg,
      transparent 225deg,
      rgba(212, 175, 55, 0.12) 315deg,
      transparent 360deg
    );
  mix-blend-mode: screen;
}

/* 中央红色标签 */
.disc__label {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 42%;
  height: 42%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--crimson) 0%, var(--lacquer) 70%, var(--lacquer-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  box-shadow:
    inset 0 0 0 1px rgba(212, 175, 55, 0.5),
    inset 0 0 12px rgba(0, 0, 0, 0.6);
}

.label-zh {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 26px);
  color: var(--gold-light);
  letter-spacing: 0.1em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  line-height: 1;
}

.disc__hole {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  transform: translate(-50%, -50%);
  background: var(--ink);
  border-radius: 50%;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.9);
  z-index: 5;
}

/* 唱针 */
.needle {
  position: absolute;
  top: -8%;
  right: -8%;
  width: 60%;
  height: 60%;
  transform-origin: top right;
  transform: rotate(-35deg);
  transition: transform 0.8s var(--ease-elegant);
  pointer-events: none;
  z-index: 4;
}

.audio-card.is-playing .needle {
  transform: rotate(-12deg);
}

.needle__arm {
  position: absolute;
  top: 6%;
  right: 6%;
  width: 85%;
  height: 4px;
  background: linear-gradient(180deg, var(--gold-light), var(--gold-deep));
  transform-origin: right;
  transform: rotate(45deg);
  border-radius: 2px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.needle__head {
  position: absolute;
  bottom: 30%;
  left: 25%;
  width: 18px;
  height: 18px;
  background: radial-gradient(circle at 30% 30%, var(--gold-light), var(--gold-deep));
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
}

.needle__pivot {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  background: radial-gradient(circle at 30% 30%, var(--gold-light), var(--gold-deep));
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

/* 中央播放按钮 */
.audio-card__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(20, 8, 10, 0.95), rgba(0, 0, 0, 0.95));
  border: 1px solid rgba(212, 175, 55, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  z-index: 6;
  cursor: pointer;
  transition: all 0.3s var(--ease-elegant);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6), 0 0 20px rgba(212, 175, 55, 0.15);
}

.audio-card__play:hover {
  background: radial-gradient(circle, rgba(123, 24, 32, 0.9), rgba(79, 14, 18, 0.9));
  border-color: var(--gold);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7), 0 0 30px rgba(212, 175, 55, 0.4);
  transform: translate(-50%, -50%) scale(1.05);
}

.audio-card__play .icon--play { display: block; }
.audio-card__play .icon--pause { display: none; }

.audio-card.is-playing .audio-card__play .icon--play { display: none; }
.audio-card.is-playing .audio-card__play .icon--pause { display: block; }

.audio-card__play .icon--play {
  margin-left: 3px;
}

/* 卡片底部 */
.audio-card__meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.audio-card__name {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.4vw, 32px);
  letter-spacing: 0.3em;
  background: linear-gradient(180deg, var(--gold-light), var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 400;
  margin-left: 0.3em;
}

.audio-card__hint {
  font-family: var(--font-elegant);
  font-size: 15px;
  letter-spacing: 0.4em;
  color: var(--gold-deep);
  opacity: 0.8;
  margin-left: 0.4em;
}

.audio-card.is-playing .audio-card__hint {
  opacity: 0;
}

/* 声波 */
.waveform {
  display: flex;
  align-items: end;
  gap: 4px;
  height: 32px;
  margin-top: 8px;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.4s var(--ease-elegant);
}

.audio-card.is-playing .waveform {
  opacity: 1;
  transform: translateY(0);
}

.waveform span {
  display: block;
  width: 3px;
  height: 4px;
  background: linear-gradient(180deg, var(--gold-light), var(--gold-deep));
  border-radius: 999px;
  box-shadow: 0 0 6px rgba(212, 175, 55, 0.6);
  transform-origin: bottom;
}

.audio-card.is-playing .waveform span {
  animation: waveBar 0.9s ease-in-out infinite;
}

.audio-card.is-playing .waveform span:nth-child(1)  { animation-delay: 0.00s; }
.audio-card.is-playing .waveform span:nth-child(2)  { animation-delay: 0.08s; }
.audio-card.is-playing .waveform span:nth-child(3)  { animation-delay: 0.16s; }
.audio-card.is-playing .waveform span:nth-child(4)  { animation-delay: 0.24s; }
.audio-card.is-playing .waveform span:nth-child(5)  { animation-delay: 0.32s; }
.audio-card.is-playing .waveform span:nth-child(6)  { animation-delay: 0.40s; }
.audio-card.is-playing .waveform span:nth-child(7)  { animation-delay: 0.48s; }
.audio-card.is-playing .waveform span:nth-child(8)  { animation-delay: 0.40s; }
.audio-card.is-playing .waveform span:nth-child(9)  { animation-delay: 0.32s; }
.audio-card.is-playing .waveform span:nth-child(10) { animation-delay: 0.24s; }
.audio-card.is-playing .waveform span:nth-child(11) { animation-delay: 0.16s; }
.audio-card.is-playing .waveform span:nth-child(12) { animation-delay: 0.08s; }

@keyframes waveBar {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(7); }
}

.audio-card__time {
  font-family: var(--font-latin-body);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.15em;
  color: var(--gold-deep);
  margin-top: 6px;
  opacity: 0.85;
}

/* ============================================================
   SLIDE 6 - 赵主任发言
   ============================================================ */
.slide--zhao {
  background:
    radial-gradient(ellipse at 50% 40%, rgba(160, 36, 44, 0.4) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 95%, rgba(212, 175, 55, 0.1) 0%, transparent 55%),
    linear-gradient(180deg, var(--void-2), var(--void) 70%);
}

.zhao__spotlight {
  position: absolute;
  top: -20%;
  left: 50%;
  width: 100vmin;
  height: 130vmin;
  transform: translateX(-50%);
  background:
    radial-gradient(ellipse at top, rgba(212, 175, 55, 0.22) 0%, rgba(123, 24, 32, 0.1) 30%, transparent 60%);
  filter: blur(30px);
  pointer-events: none;
  opacity: 0;
}

[data-active].slide--zhao .zhao__spotlight {
  animation: fadeIn 1.8s var(--ease-elegant) 0.2s forwards;
}

.zhao__rays {
  position: absolute;
  top: -10%;
  left: 50%;
  width: 80vmin;
  height: 120vmin;
  transform: translateX(-50%);
  background:
    conic-gradient(from 180deg at 50% 0%, transparent 168deg, rgba(212, 175, 55, 0.05) 175deg, rgba(212, 175, 55, 0.12) 180deg, rgba(212, 175, 55, 0.05) 185deg, transparent 192deg);
  pointer-events: none;
  opacity: 0;
  filter: blur(8px);
}

[data-active].slide--zhao .zhao__rays {
  animation: fadeIn 2s var(--ease-elegant) 0.4s forwards;
}

.zhao__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 32px;
}

.zhao__eyebrow {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--font-elegant);
  font-size: clamp(16px, 1.6vw, 20px);
  letter-spacing: 0.6em;
  color: var(--gold-soft);
  margin-left: 0.6em;
  opacity: 0;
}

.zhao__eyebrow .line {
  width: 70px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.zhao__eyebrow .line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold));
}

[data-active].slide--zhao .zhao__eyebrow {
  animation: fadeIn 1.2s var(--ease-elegant) 0.8s forwards;
}

.zhao__title {
  font-family: var(--font-display);
  font-weight: 400;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 12px 0;
}

.zhao__title-row {
  display: block;
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: 0.3em;
  line-height: 1.2;
  background: linear-gradient(180deg, var(--gold-light), var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(20px);
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
}

.zhao__title-row--main {
  margin: 6px 0;
}

.zhao__title-row--main .big {
  font-size: clamp(96px, 13vw, 180px);
  letter-spacing: 0.18em;
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold-soft) 35%, var(--gold) 65%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 8px 24px rgba(212, 175, 55, 0.4));
}

[data-active].slide--zhao .zhao__title-row:nth-child(1) {
  animation: fadeUp 1s var(--ease-elegant) 1.1s forwards;
}
[data-active].slide--zhao .zhao__title-row:nth-child(2) {
  animation: zhaoBigReveal 1.4s var(--ease-emphasize) 1.4s forwards;
}
[data-active].slide--zhao .zhao__title-row:nth-child(3) {
  animation: fadeUp 1s var(--ease-elegant) 2.1s forwards;
}

@keyframes zhaoBigReveal {
  0% { opacity: 0; transform: translateY(40px) scale(0.92); filter: blur(8px); }
  100% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

.zhao__quote {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-family: var(--font-elegant);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  margin-top: 24px;
  opacity: 0;
}

.quote-mark {
  font-size: 1.6em;
  color: var(--gold);
  line-height: 1;
}

.quote-text {
  margin-left: 0.4em;
}

[data-active].slide--zhao .zhao__quote {
  animation: fadeIn 1.4s var(--ease-elegant) 2.4s forwards;
}

.zhao__ornament {
  margin-top: 24px;
  opacity: 0;
  transform: scaleX(0);
}

[data-active].slide--zhao .zhao__ornament {
  animation: scaleInX 1.2s var(--ease-emphasize) 2.8s forwards;
}

/* ============================================================
   SLIDE 7 - 谢幕
   ============================================================ */
.slide--finale {
  background:
    radial-gradient(circle at 50% 50%, rgba(212, 175, 55, 0.3) 0%, transparent 55%),
    radial-gradient(circle at 50% 30%, rgba(160, 36, 44, 0.5) 0%, transparent 60%),
    linear-gradient(180deg, var(--lacquer-deep) 0%, var(--void-2) 50%, var(--void) 100%);
}

.finale__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.finale__rays {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200vmax;
  height: 200vmax;
  transform: translate(-50%, -50%);
  background:
    conic-gradient(
      from 0deg at 50% 50%,
      transparent 0deg,
      rgba(212, 175, 55, 0.06) 6deg,
      transparent 12deg,
      rgba(212, 175, 55, 0.08) 24deg,
      transparent 36deg,
      rgba(212, 175, 55, 0.05) 48deg,
      transparent 60deg,
      rgba(212, 175, 55, 0.07) 72deg,
      transparent 84deg,
      rgba(212, 175, 55, 0.04) 96deg,
      transparent 110deg,
      rgba(212, 175, 55, 0.07) 130deg,
      transparent 150deg,
      rgba(212, 175, 55, 0.05) 180deg,
      transparent 210deg,
      rgba(212, 175, 55, 0.08) 240deg,
      transparent 270deg,
      rgba(212, 175, 55, 0.05) 300deg,
      transparent 330deg,
      rgba(212, 175, 55, 0.07) 360deg
    );
  opacity: 0;
}

[data-active].slide--finale .finale__rays {
  animation:
    fadeIn 2s var(--ease-elegant) 0.2s forwards,
    spinRays 100s linear 0.2s infinite;
}

.finale__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90vmin;
  height: 90vmin;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(212, 175, 55, 0.38) 0%, transparent 55%);
  filter: blur(40px);
  animation: glowPulse 5s ease-in-out infinite;
}

.finale__sparkles {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(2px 2px at 12% 25%, rgba(244, 227, 168, 0.9), transparent),
    radial-gradient(2px 2px at 88% 15%, rgba(244, 227, 168, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 25% 75%, rgba(244, 227, 168, 0.8), transparent),
    radial-gradient(1.5px 1.5px at 78% 82%, rgba(244, 227, 168, 0.7), transparent),
    radial-gradient(2px 2px at 50% 12%, rgba(244, 227, 168, 0.6), transparent),
    radial-gradient(1.5px 1.5px at 8% 60%, rgba(244, 227, 168, 0.6), transparent),
    radial-gradient(1.5px 1.5px at 92% 50%, rgba(244, 227, 168, 0.8), transparent),
    radial-gradient(1.5px 1.5px at 35% 38%, rgba(244, 227, 168, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 65% 65%, rgba(244, 227, 168, 0.6), transparent);
  animation: sparkleTwinkle 4s ease-in-out infinite alternate;
}

@keyframes sparkleTwinkle {
  0% { opacity: 0.4; }
  100% { opacity: 1; }
}

.finale__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
  max-width: 1100px;
}

.finale__crest {
  opacity: 0;
  transform: translateY(-12px);
}

[data-active].slide--finale .finale__crest {
  animation: fadeDown 1.4s var(--ease-elegant) 0.2s forwards;
}

.finale__eyebrow {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 8px;
  font-family: var(--font-elegant);
  font-size: 19px;
  letter-spacing: 0.8em;
  color: var(--gold-soft);
  margin-left: 0.8em;
  opacity: 0;
}

.finale__eyebrow .line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-soft));
}

.finale__eyebrow .line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold-soft));
}

[data-active].slide--finale .finale__eyebrow {
  animation: fadeIn 1.2s var(--ease-elegant) 0.6s forwards;
}

.finale__title {
  display: flex;
  font-family: var(--font-display);
  font-size: clamp(96px, 14vw, 200px);
  font-weight: 400;
  letter-spacing: 0.18em;
  line-height: 1;
  gap: 0;
  margin: 10px 0 20px;
}

.finale__title .char {
  display: inline-block;
  background: linear-gradient(
    180deg,
    var(--gold-light) 0%,
    var(--gold-soft) 25%,
    var(--gold) 55%,
    var(--gold-deep) 85%,
    var(--gold-bronze) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 8px 30px rgba(212, 175, 55, 0.4)) drop-shadow(0 2px 0 rgba(0, 0, 0, 0.5));
  opacity: 0;
  transform: translateY(60px) scale(0.85);
}

[data-active].slide--finale .finale__title .char {
  animation: finaleCharReveal 1.4s var(--ease-emphasize) forwards;
}

[data-active].slide--finale .finale__title .char:nth-child(1) { animation-delay: 1.0s; }
[data-active].slide--finale .finale__title .char:nth-child(2) { animation-delay: 1.2s; }
[data-active].slide--finale .finale__title .char:nth-child(3) { animation-delay: 1.4s; }
[data-active].slide--finale .finale__title .char:nth-child(4) { animation-delay: 1.6s; }

@keyframes finaleCharReveal {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.finale__divider {
  opacity: 0;
  transform: scaleX(0);
}

[data-active].slide--finale .finale__divider {
  animation: scaleInX 1.2s var(--ease-emphasize) 2.4s forwards;
}

.finale__farewell {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 36px);
  letter-spacing: 0.3em;
  color: var(--ivory);
  line-height: 1.8;
  margin: 16px 0 16px;
  opacity: 0;
}

.farewell-sub {
  display: block;
  font-family: var(--font-elegant);
  font-size: 0.62em;
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  margin-top: 14px;
}

[data-active].slide--finale .finale__farewell {
  animation: fadeUp 1.2s var(--ease-elegant) 2.7s forwards;
}

.finale__signature {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-elegant);
  font-size: clamp(15px, 1.4vw, 18px);
  letter-spacing: 0.5em;
  color: var(--gold-soft);
  opacity: 0;
  margin-left: 0.5em;
}

.sig-line {
  width: 50px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-soft));
}

.sig-line:last-child {
  background: linear-gradient(-90deg, transparent, var(--gold-soft));
}

[data-active].slide--finale .finale__signature {
  animation: fadeIn 1.2s var(--ease-elegant) 3.1s forwards;
}

/* ============================================================
   底部控制栏
   ============================================================ */
.control-bar {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 22px;
  background:
    linear-gradient(180deg, rgba(20, 8, 10, 0.85), rgba(10, 6, 6, 0.92));
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 999px;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(212, 175, 55, 0.15);
  z-index: 100;
}

.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.25);
  color: var(--gold-light);
  cursor: pointer;
  transition: all 0.3s var(--ease-elegant);
  position: relative;
  flex-shrink: 0;
}

.ctrl-btn:hover {
  background: rgba(212, 175, 55, 0.18);
  border-color: var(--gold);
  color: var(--gold-light);
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.4);
}

.ctrl-btn:active {
  transform: scale(0.94);
}

.ctrl-btn--anim {
  width: 32px;
  height: 32px;
}

.ctrl-btn--anim .ic-pause { display: none; }
.ctrl-btn--anim.is-paused .ic-play { display: none; }
.ctrl-btn--anim.is-paused .ic-pause { display: block; }
.ctrl-btn--anim.is-paused {
  background: rgba(123, 24, 32, 0.3);
  border-color: var(--vermillion);
  color: var(--gold-light);
}

.ctrl-dots {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
}

.ctrl-dot {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--gold-deep);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s var(--ease-elegant);
  overflow: hidden;
}

.ctrl-dot__num {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0;
  transition: all 0.4s var(--ease-elegant);
  position: relative;
  z-index: 2;
}

.ctrl-dot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold) 0%, var(--gold-deep) 100%);
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.4s var(--ease-elegant);
}

.ctrl-dot:hover {
  border-color: var(--gold-soft);
  color: var(--gold-light);
}

.ctrl-dot.is-active {
  border-color: var(--gold);
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.5);
  width: 36px;
  height: 36px;
}

.ctrl-dot.is-active::before {
  opacity: 1;
  transform: scale(1);
}

.ctrl-dot.is-active .ctrl-dot__num {
  color: var(--lacquer-deep);
  font-weight: 700;
  font-size: 15px;
}

.ctrl-divider {
  display: block;
  width: 1px;
  height: 24px;
  background: linear-gradient(180deg, transparent, rgba(212, 175, 55, 0.4), transparent);
  margin: 0 4px;
}

.music-ctrl {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ctrl-btn--music {
  position: relative;
}

.ctrl-btn--music .ic-music-off { display: none; }
.ctrl-btn--music.is-muted .ic-music-on { display: none; }
.ctrl-btn--music.is-muted .ic-music-off { display: block; }
.ctrl-btn--music.is-muted {
  color: var(--gold-deep);
}

.music-pulse {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  opacity: 0;
  pointer-events: none;
}

.ctrl-btn--music.is-playing .music-pulse {
  animation: musicPulse 2s ease-out infinite;
}

@keyframes musicPulse {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.4); }
}

.volume-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-deep);
}

.volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold) var(--vol, 55%), rgba(212, 175, 55, 0.2) var(--vol, 55%), rgba(212, 175, 55, 0.2) 100%);
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--gold-light), var(--gold-deep));
  border: 1px solid var(--gold);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4), 0 0 8px rgba(212, 175, 55, 0.6);
  cursor: pointer;
  transition: transform 0.2s var(--ease-elegant);
}

.volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.volume-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--gold-light), var(--gold-deep));
  border: 1px solid var(--gold);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

.ctrl-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 12px;
  border-left: 1px solid rgba(212, 175, 55, 0.2);
  margin-left: 4px;
  font-family: var(--font-elegant);
  letter-spacing: 0.2em;
  color: var(--gold-soft);
  user-select: none;
  min-width: 80px;
}

.ctrl-title__num {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--gold);
}

.ctrl-title__txt {
  font-size: 14px;
  margin-left: 0.2em;
}

/* ============================================================
   预加载器
   ============================================================ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(123, 24, 32, 0.5) 0%, transparent 60%),
    linear-gradient(180deg, var(--lacquer-deep), var(--ink));
  transition: opacity 1.2s var(--ease-elegant), visibility 1.2s;
}

.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}

.preloader__title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: 0.3em;
  background: linear-gradient(180deg, var(--gold-light), var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 16px rgba(212, 175, 55, 0.4));
}

.preloader__sub {
  font-family: var(--font-elegant);
  font-size: clamp(20px, 2.4vw, 32px);
  letter-spacing: 0.5em;
  color: var(--gold-soft);
  margin-left: 0.5em;
}

.preloader__bar {
  width: 220px;
  height: 1px;
  background: rgba(212, 175, 55, 0.15);
  position: relative;
  overflow: hidden;
  margin: 16px 0 8px;
}

.preloader__bar span {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  animation: barSweep 1.6s ease-in-out infinite;
}

@keyframes barSweep {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.preloader__hint {
  font-family: var(--font-elegant);
  font-size: 17px;
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  opacity: 0.85;
  margin-left: 0.4em;
  animation: hintPulse 2s ease-in-out infinite;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ============================================================
   响应式微调
   ============================================================ */
@media (max-width: 1100px) {
  .audio-cards {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .agenda-card {
    grid-template-columns: 100px 1fr;
    gap: 24px;
    padding: 24px;
  }

  .num-zh { font-size: 70px; }

  .cover__seal { right: 50px; bottom: 40px; }
  .finale__seal { right: 40px; bottom: 20px; }

  .scroll--left { left: 30px; }
  .scroll--right { right: 30px; }

  .carousel__caption {
    left: 40px;
    bottom: 160px;
  }

  .carousel__progress {
    right: 40px;
    bottom: 160px;
  }
}

@media (max-width: 720px) {
  .control-bar {
    bottom: 16px;
    padding: 10px 14px;
    gap: 10px;
  }

  .ctrl-dots { gap: 4px; }
  .ctrl-dot { width: 26px; height: 26px; }
  .ctrl-dot.is-active { width: 30px; height: 30px; }
  .ctrl-dot__num { font-size: 11px; }
  .ctrl-title { display: none; }
  .volume-wrap { display: none; }

  .cover__seal, .finale__seal { display: none; }

  .leader__scrolls { display: none; }
}

/* ============================================================
   减少动画偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}