:root {
  --font-sans: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --bg: #f5f7ff;
  --bg-2: #fafbff;
  --ink: #111111;
  --muted: #5f5b62;
  --soft: #dfe7ff;
  --soft-2: #edf2ff;
  --accent: #9fb7ff;
  --accent-2: #6f83d8;
  --peach: #cdd8ff;
  --card: rgba(255, 255, 255, 0.74);
  --line: rgba(17, 17, 17, 0.10);
  --shadow: 0 22px 55px rgba(79, 94, 160, 0.10);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 15px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  color: var(--ink);
  background: #ffffff;
  font-family: var(--font-sans);
  overflow-x: hidden;
}

body::before {
  content: none;
}

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

button {
  font-family: inherit;
}

.site-shell {
  width: min(1560px, 100%);
  margin: 0 auto;
  position: relative;
}

.topbar {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 72px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  white-space: nowrap;
  position: relative;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand::before,
.brand::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
}

.brand::before {
  left: 8px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: #ffd166;
  box-shadow:
    -10px -6px 0 -2px #ffec99,
    -14px 12px 0 -3px #ffc857,
    2px 22px 0 -3px #fff3bf;
  animation: logo-starburst-left 2.6s ease-in-out infinite;
}

.brand::after {
  left: 42px;
  top: 7px;
  width: 12px;
  height: 12px;
  background: #ffd166;
  clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%);
  box-shadow:
    12px -7px 0 -3px #ffec99,
    18px 14px 0 -4px #ffc857;
  animation: logo-starburst-right 2.6s ease-in-out infinite;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
}

.brand-subtitle {
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.11em;
  line-height: 1;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 34px;
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
}
nav a {
  position: relative;
  padding: 27px 0 24px;
  transition: color 220ms ease;
}

nav a:hover {
  color: var(--accent-2);
}

/* 下划线现在永远存在，靠 scaleX 控制显隐 → 自带过渡 */
nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 14px;
  width: 48px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent-2);
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 320ms cubic-bezier(.4, 0, .2, 1),
              opacity 220ms ease;
  opacity: 0;
  box-shadow: 0 8px 16px rgba(111, 131, 216, 0.25);
  pointer-events: none;
}

nav a.active {
  color: var(--accent-2);
}

nav a.active::after {
  transform: translateX(-50%) scaleX(1);
  opacity: 1;
}
.submit-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent-2);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 14px 28px rgba(111, 131, 216, 0.22);
  white-space: nowrap;
}

main {
  padding: 44px 60px 0;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.hero {
  min-height: 330px;
  display: grid;
  grid-template-columns: minmax(500px, 0.92fr) minmax(520px, 0.98fr);
  gap: 28px;
  align-items: center;
  padding: 0 26px 22px;
  position: relative;
}

.hero-copy {
  padding-top: 6px;
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-2);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 15px;
  margin-bottom: 20px;
}

.eyebrow::after {
  content: "";
  width: 42px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent);
  transform: translateY(1px);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-sans);
  color: var(--ink);
}

.hero-title-row {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

h1 {
  max-width: 790px;
  font-size: clamp(44px, 4.7vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 700;
  margin-bottom: 0;
}

.animated-title {
  display: grid;
  gap: 4px;
}

.title-line {
  display: block;
}

.title-human {
  position: relative;
  width: fit-content;
  padding-right: 88px;
}

.morph-word {
  display: inline-flex;
  align-items: baseline;
  gap: 0.025em;
  font-family: "Comic Sans MS", "Trebuchet MS", "Marker Felt", "Chalkboard SE", var(--font-sans);
  font-weight: 900;
  letter-spacing: -0.055em;
  filter: drop-shadow(0 8px 0 rgba(79, 94, 160, 0.08));
  animation: word-breathe 3.8s ease-in-out infinite;
}

.morph-word span {
  display: inline-block;
  transform-origin: 50% 78%;
  animation: letter-morph 4.8s cubic-bezier(.68,-0.42,.27,1.42) infinite;
  will-change: transform;
}

.morph-word span:nth-child(1) { color: #ff9f43; animation-delay: 0s; }
.morph-word span:nth-child(2) { color: #5f8cff; animation-delay: .08s; }
.morph-word span:nth-child(3) { color: #ff6fb1; animation-delay: .16s; }
.morph-word span:nth-child(4) { color: #4ecdc4; animation-delay: .24s; }
.morph-word span:nth-child(5) { color: #8f7cff; animation-delay: .32s; }
.morph-word span:nth-child(6) { color: #ffca3a; animation-delay: .40s; }
.morph-word span:nth-child(7) { color: #4d96ff; animation-delay: .48s; }
.morph-word span:nth-child(8) { color: #6c5ce7; animation-delay: .56s; }

.ai-robot {
  position: absolute;
  right: 0;
  top: 0.05em;
  width: 54px;
  height: 48px;
  border: 3px solid var(--accent-2);
  border-radius: 18px 18px 14px 14px;
  background: rgba(223, 231, 255, 0.72);
  box-shadow: 0 10px 20px rgba(111, 131, 216, 0.16);
  animation: robot-roam 2.4s ease-in-out infinite;
}

.ai-robot::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -14px;
  width: 3px;
  height: 13px;
  background: var(--accent-2);
  transform: translateX(-50%);
}

.ai-robot::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -20px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent-2);
  box-shadow: 0 0 0 5px rgba(111, 131, 216, 0.12);
  transform: translateX(-50%);
  animation: robot-antenna 1.4s ease-in-out infinite;
}

.robot-eye {
  position: absolute;
  top: 18px;
  width: 8px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent-2);
  animation: robot-blink 3.2s ease-in-out infinite;
}

.robot-eye.left {
  left: 16px;
}

.robot-eye.right {
  right: 16px;
}

@keyframes word-breathe {
  0%, 100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.025);
  }
}

@keyframes letter-morph {
  0%, 100% {
    transform: translateY(0) rotate(0deg) scaleX(1) scaleY(1);
  }

  18% {
    transform: translateY(-0.13em) rotate(-5deg) scaleX(0.92) scaleY(1.12);
  }

  42% {
    transform: translateY(0.06em) rotate(5deg) scaleX(1.08) scaleY(0.92);
  }

  66% {
    transform: translateY(-0.07em) rotate(-3deg) scaleX(0.97) scaleY(1.06);
  }

  82% {
    transform: translateY(0.02em) rotate(2deg) scaleX(1.03) scaleY(0.98);
  }
}

@keyframes robot-roam {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }

  50% {
    transform: translate(8px, -7px) rotate(4deg);
  }
}

@keyframes robot-blink {
  0%, 88%, 100% {
    transform: scaleY(1);
  }

  92%, 96% {
    transform: scaleY(0.16);
  }
}

@keyframes robot-antenna {
  0%, 100% {
    opacity: 0.55;
    transform: translateX(-50%) scale(1);
  }

  50% {
    opacity: 1;
    transform: translateX(-50%) scale(1.28);
  }
}

@keyframes logo-starburst-left {
  0%, 58%, 100% {
    opacity: 0;
    transform: translate(0, 0) scale(0.6);
  }

  70% {
    opacity: 1;
    transform: translate(-10px, -4px) scale(1);
  }
}

@keyframes logo-starburst-right {
  0%, 55%, 100% {
    opacity: 0;
    transform: scale(0.45) rotate(0deg);
  }

  68% {
    opacity: 1;
    transform: translate(12px, -5px) scale(1.15) rotate(24deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .morph-word,
  .morph-word span,
  .ai-robot,
  .ai-robot::after,
  .robot-eye,
  .brand::before,
  .brand::after {
    animation: none;
  }
}

.hero-submit-button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  border-radius: 999px;
  background: var(--accent-2);
  color: #ffffff;
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 18px 36px rgba(111, 131, 216, 0.24);
  transform: translateY(5px);
  white-space: nowrap;
}

.hero-submit-button::after {
  content: "→";
  margin-left: 12px;
}

.brush {
  width: 228px;
  height: 18px;
  margin: 0 0 22px 4px;
  position: relative;
}

.brush::before {
  content: "";
  position: absolute;
  inset: 4px 0 3px;
  border-radius: 70% 40% 60% 35%;
  background: linear-gradient(90deg, rgba(159, 183, 255, 0.72), rgba(223, 231, 255, 0.14));
  transform: rotate(-1.4deg);
}

.summary {
  max-width: 700px;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.72;
  font-weight: 520;
  margin-bottom: 20px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  align-items: center;
  margin: 29px 0 0;
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

.hero-visual {
  position: relative;
  width: min(100%, 640px);
  min-height: 286px;
  justify-self: end;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.56), rgba(255, 255, 255, 0.20)),
    radial-gradient(circle at 82% 18%, rgba(205, 216, 255, 0.43) 0 54px, transparent 56px),
    radial-gradient(circle at 58% 42%, rgba(223, 231, 255, 0.70), transparent 42%);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(17, 17, 17, 0.04);
}

.speaker-teaser {
  margin: 0 26px 42px;
  min-height: 142px;
  display: grid;
  grid-template-columns: minmax(250px, 0.75fr) minmax(520px, 1.35fr) auto;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(17, 17, 17, 0.07);
  box-shadow: 0 14px 34px rgba(79, 94, 160, 0.08);
}

.teaser-copy {
  display: grid;
  gap: 8px;
}

.teaser-copy span {
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.teaser-copy strong {
  color: var(--ink);
  font-size: 24px;
  line-height: 1.3;
}

.teaser-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.teaser-speaker {
  min-height: 132px;
  display: grid;
  grid-template-rows: 68px 48px;
  justify-items: center;
  align-content: start;
  gap: 12px;
  padding: 14px 12px;
  border-radius: 22px;
  background: rgba(223, 231, 255, 0.40);
  border: 1px solid rgba(111, 131, 216, 0.10);
  text-align: center;
}

.teaser-speaker span:last-child {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.25;
  font-weight: 700;
  min-height: 46px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow-wrap: anywhere;
}

.teaser-link {
  color: var(--accent-2);
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.hero-image-panel {
  background: #ffffff;
  box-shadow: 0 18px 46px rgba(79, 94, 160, 0.10);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

.hero-image-panel img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  object-position: center;
  border-radius: 22px;
}

.hero-image-panel::before {
  content: none;
}

.hero-visual::before {
  content: "";
  position: absolute;
  left: 7%;
  right: 7%;
  bottom: 4%;
  height: 82px;
  background: linear-gradient(90deg, transparent, rgba(159, 183, 255, 0.26), rgba(111, 131, 216, 0.30), transparent);
  clip-path: polygon(0 72%, 12% 48%, 21% 64%, 31% 39%, 44% 68%, 55% 33%, 68% 59%, 78% 41%, 91% 68%, 100% 50%, 100% 100%, 0 100%);
  opacity: 0.78;
}

.hero-visual.hero-image-panel::before {
  content: none;
}

.diagram-area {
  position: absolute;
  inset: 0;
}

.sketch-person {
  position: absolute;
  left: 44px;
  bottom: 40px;
  width: 270px;
  height: 310px;
  opacity: 0.88;
}

.sketch-person .head {
  position: absolute;
  left: 104px;
  top: 18px;
  width: 72px;
  height: 82px;
  border: 2px solid rgba(17, 17, 17, 0.50);
  border-radius: 52% 48% 45% 48%;
  background: rgba(255, 255, 255, 0.28);
}

.sketch-person .hair {
  position: absolute;
  left: 86px;
  top: 2px;
  width: 105px;
  height: 74px;
  border: 2px solid rgba(17, 17, 17, 0.44);
  border-bottom: 0;
  border-radius: 50% 54% 30% 50%;
  transform: rotate(-8deg);
}

.sketch-person .body {
  position: absolute;
  left: 55px;
  top: 104px;
  width: 160px;
  height: 176px;
  border: 2px solid rgba(17, 17, 17, 0.42);
  border-radius: 52% 48% 34px 34px;
  background: rgba(255, 255, 255, 0.30);
  transform: rotate(4deg);
}

.sketch-person .arm {
  position: absolute;
  left: 145px;
  top: 140px;
  width: 118px;
  height: 46px;
  border-top: 2px solid rgba(17, 17, 17, 0.45);
  border-radius: 50%;
  transform: rotate(22deg);
}

.tablet {
  position: absolute;
  left: 292px;
  bottom: 88px;
  width: 246px;
  height: 145px;
  border-radius: 14px;
  background: #2e3038;
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.14);
  transform: rotate(6deg);
  padding: 12px;
  z-index: 3;
}

.tablet-screen {
  height: 100%;
  border-radius: 8px;
  background:
    linear-gradient(170deg, #fff0f5 0 35%, #ffe5ee 35% 58%, #c98ba3 58% 59%, #f7c6d8 60% 100%);
  position: relative;
  overflow: hidden;
}

.tablet-screen::before {
  content: "";
  position: absolute;
  inset: 42% 0 0;
  clip-path: polygon(0 100%, 20% 35%, 31% 72%, 47% 25%, 64% 80%, 82% 42%, 100% 78%, 100% 100%);
  background: rgba(17, 17, 17, 0.18);
}

.floating-note,
.generation-panel,
.assistant-note,
.refine-note,
.speaker-mini-card {
  position: absolute;
  border: 1px solid rgba(17, 17, 17, 0.10);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 12px 35px rgba(79, 94, 160, 0.09);
  backdrop-filter: blur(14px);
}

.floating-note {
  left: 330px;
  top: 36px;
  width: 200px;
  padding: 16px 18px;
  border-radius: 16px 20px 14px 18px;
  transform: rotate(-2deg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.42;
  font-weight: 650;
}

.generation-panel {
  right: 196px;
  top: 150px;
  width: 330px;
  padding: 14px;
  border-radius: 15px;
}

.panel-title {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.mini-img {
  height: 68px;
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.30), rgba(255,255,255,0.0)),
    linear-gradient(160deg, #d8e1ff 0 34%, #f4f7ff 34% 57%, #6f83d8 57% 58%, #dfe7ff 59% 100%);
  border: 1px solid rgba(17, 17, 17, 0.08);
  position: relative;
  overflow: hidden;
}

.mini-img::before {
  content: "";
  position: absolute;
  inset: 35% 0 0;
  background: rgba(17, 17, 17, 0.16);
  clip-path: polygon(0 100%, 16% 42%, 28% 76%, 43% 28%, 62% 85%, 78% 45%, 100% 88%, 100% 100%);
}

.assistant-note {
  right: 44px;
  bottom: 62px;
  width: 190px;
  border-radius: 18px;
  padding: 15px;
}

.assistant-note h4 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 9px;
}

.assistant-note p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  font-weight: 650;
}

.refine-note {
  right: 360px;
  bottom: 72px;
  width: 176px;
  border-radius: 17px;
  padding: 14px 16px;
}

.refine-note ul,
.speaker-mini-card ul {
  list-style: none;
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.refine-note li,
.speaker-mini-card li {
  display: flex;
  gap: 8px;
  align-items: center;
}

.refine-note li::before,
.speaker-mini-card li::before {
  content: "✓";
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(223, 231, 255, 0.80);
  color: var(--accent-2);
  font-size: 12px;
  flex: 0 0 auto;
}

.ai-figure {
  position: absolute;
  right: 42px;
  top: 58px;
  width: 220px;
  height: 292px;
  opacity: 0.80;
}

.ai-head {
  position: absolute;
  left: 42px;
  top: 8px;
  width: 138px;
  height: 160px;
  border-radius: 60% 48% 54% 46%;
  background: rgba(223, 231, 255, 0.78);
  border: 2px solid rgba(111, 131, 216, 0.30);
}

.ai-body {
  position: absolute;
  left: 26px;
  bottom: 0;
  width: 178px;
  height: 152px;
  border-radius: 44% 44% 20px 20px;
  background: rgba(223, 231, 255, 0.42);
  border: 2px solid rgba(111, 131, 216, 0.20);
}

.node {
  position: absolute;
  left: 74px;
  top: 66px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(111, 131, 216, 0.80);
  box-shadow: 28px 22px 0 rgba(111, 131, 216, 0.52), 62px 5px 0 rgba(111, 131, 216, 0.45), 84px 38px 0 rgba(111, 131, 216, 0.55);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(560px, 1.08fr);
  gap: 32px;
  margin: 0 0 26px;
}

.panel {
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.60);
  border: 1px solid rgba(17, 17, 17, 0.075);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 23px 26px 12px;
}

.section-title {
  color: var(--accent-2);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 16px;
  position: relative;
  display: inline-block;
  padding-bottom: 11px;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 46px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent-2);
}

.vision-panel {
  margin: 0 26px 34px;
  padding: 0 24px 26px;
  grid-column: 1 / -1;
}

.vision-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(17, 17, 17, 0.06);
  background: rgba(255, 255, 255, 0.36);
}

.vision-card {
  min-height: 260px;
  padding: 34px 30px;
  border-right: 1px solid var(--line);
}

.vision-card:last-child {
  border-right: 0;
}

.round-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(223, 231, 255, 0.86);
  margin-bottom: 16px;
}

.vision-card:nth-child(2) .round-icon {
  background: rgba(205, 216, 255, 0.68);
}

.vision-card strong {
  display: block;
  font-size: 24px;
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 9px;
  letter-spacing: -0.015em;
}

.vision-card span {
  display: block;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.62;
  font-weight: 400;
}

.about-workshop,
.organizers {
  margin: 0 26px 34px;
}

.about-workshop {
  padding: 0 28px 32px;
  scroll-margin-top: 96px;
}

.about-workshop .panel-header {
  display: grid;
  justify-content: start;
  gap: 8px;
  padding: 26px 0 18px;
}

.about-workshop .eyebrow {
  margin-bottom: 0;
}

.about-workshop .section-title,
.cfp-section .section-title {
  color: var(--ink);
  font-size: clamp(28px, 3.1vw, 46px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  text-transform: none;
}

.about-flow {
  display: grid;
  gap: 28px;
}

.about-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 28px;
  align-items: start;
}

.about-flow p {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.76;
  font-weight: 430;
  max-width: 74ch;
}

.about-intro p:first-child {
  font-size: clamp(21px, 2.1vw, 31px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.025em;
  max-width: 31ch;
}

.about-pillars {
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(0, 1fr);
  gap: 28px;
  align-items: stretch;
  padding: 24px;
  border-radius: 24px;
  background: rgba(223, 231, 255, 0.30);
  border: 1px solid rgba(111, 131, 216, 0.12);
}

.about-pillars-lead {
  align-self: center;
  color: var(--accent-2);
  font-size: 18px;
  line-height: 1.62;
  font-weight: 700;
}

.about-pillars .vision-cards {
  min-width: 0;
  background: rgba(255, 255, 255, 0.54);
}

.about-pillars .vision-card {
  min-height: 230px;
  padding: 26px 24px;
}

.about-pillars .vision-card strong {
  font-size: 20px;
}

.about-pillars .vision-card span {
  font-size: 15px;
}

.about-outro {
  max-width: 920px;
  padding: 2px 0 0 22px;
  border-left: 4px solid rgba(111, 131, 216, 0.36);
}

.cfp-section {
  margin: 0 26px 34px;
  padding: 30px;
  scroll-margin-top: 96px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.50)),
    linear-gradient(90deg, rgba(223, 231, 255, 0.48), rgba(250, 251, 255, 0.24));
}

.cfp-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 380px);
  column-gap: 32px;
  row-gap: 12px;
  align-items: end;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
}

.cfp-hero .eyebrow {
  margin-bottom: 0;
}

.cfp-lead {
  max-width: 860px;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.72;
  font-weight: 430;
}

.cfp-deadline-banner {
  grid-column: 2;
  grid-row: 1 / span 3;
  align-self: stretch;
  display: grid;
  gap: 18px;
  align-content: space-between;
  min-height: 230px;
  padding: 24px;
  border-radius: 24px;
  background: var(--accent-2);
  color: #ffffff;
  box-shadow: 0 18px 36px rgba(111, 131, 216, 0.24);
}

.cfp-deadline-main {
  display: grid;
  gap: 8px;
}

.cfp-deadline-label,
.cfp-deadline-note {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.cfp-deadline-date {
  display: block;
  font-size: clamp(32px, 3.1vw, 46px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.cfp-deadline-cta {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-2);
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}

.cfp-timeline-section,
.cfp-grid,
.cfp-topics {
  margin-top: 28px;
}

.cfp-subhead {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cfp-stepper {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid rgba(111, 131, 216, 0.14);
  background: rgba(255, 255, 255, 0.58);
}

.cfp-step {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 132px;
  padding: 22px 16px 18px;
  border-right: 1px solid rgba(17, 17, 17, 0.07);
}

.cfp-step:last-child {
  border-right: 0;
}

.cfp-step-dot {
  width: 13px;
  height: 13px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(159, 183, 255, 0.18);
}

.cfp-step.is-primary .cfp-step-dot,
.cfp-step.is-milestone .cfp-step-dot {
  background: var(--accent-2);
}

.cfp-step time {
  color: var(--accent-2);
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
}

.cfp-step span:last-child {
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
  font-weight: 700;
}

.cfp-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(280px, 0.72fr);
  gap: 22px;
}

.cfp-info-card {
  min-width: 0;
  padding: 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(17, 17, 17, 0.07);
}

.cfp-info-card h3 {
  font-size: 22px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cfp-info-card p,
.cfp-note {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.66;
}

.cfp-format-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.cfp-format-list li {
  display: grid;
  grid-template-columns: minmax(150px, 0.34fr) minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid rgba(17, 17, 17, 0.07);
}

.cfp-format-list li:last-child {
  border-bottom: 0;
}

.cfp-format-list strong {
  font-size: 16px;
  line-height: 1.35;
}

.cfp-format-list span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
}

.cfp-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  margin-top: 18px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(223, 231, 255, 0.80);
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 700;
}

.cfp-topic-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cfp-topic-tags li {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 15px;
  border-radius: 999px;
  background: rgba(223, 231, 255, 0.62);
  border: 1px solid rgba(111, 131, 216, 0.14);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.25;
  font-weight: 700;
}

.about-content {
  columns: 2 360px;
  column-gap: 38px;
  padding: 0 28px 30px;
}

.about-content p {
  break-inside: avoid;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.74;
  font-weight: 400;
  margin-bottom: 18px;
}

.speakers-panel {
  margin: 0 26px 34px;
  padding: 0 22px 26px;
}

.speaker-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 8px;
}

.speaker-tile {
  min-height: 292px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding: 32px 24px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(17, 17, 17, 0.07);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.speaker-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(79, 94, 160, 0.12);
}

.avatar {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  border: 8px solid rgba(255, 255, 255, 0.90);
  box-shadow: 0 18px 38px rgba(79, 94, 160, 0.16);
  background: #edf2ff url("../image/ChenChangeLoy_logo.png") center / cover no-repeat;
}

.avatar.mira {
  background-image: url("../image/mira.jpeg");
}

.avatar.fabio {
  background-image: url("../image/fabio.jpeg");
}

.avatar.yuhui {
  background-image: url("../image/yuhui.jpeg");
}

.avatar.mini {
  width: 68px;
  height: 68px;
  border-width: 5px;
  box-shadow: 0 10px 20px rgba(79, 94, 160, 0.14);
  flex: 0 0 auto;
}

.speaker-tile h3 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.speaker-tile p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
  font-weight: 400;
}

.speaker-tile .view {
  margin-top: auto;
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 700;
}

.topics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0 26px 34px;
}

.topics-header {
  grid-column: 1 / -1;
  max-width: 1050px;
  margin-bottom: 4px;
}

.topics-header .eyebrow {
  margin-bottom: 14px;
}

.topics-header .section-title {
  margin-bottom: 14px;
}

.topics-header p {
  max-width: 980px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 400;
}

.topic-card {
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(17, 17, 17, 0.075);
  padding: 22px;
  min-height: 164px;
  box-shadow: 0 14px 32px rgba(79, 94, 160, 0.07);
}

.topic-card strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.topic-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.58;
  font-weight: 400;
}

.organizer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 0 24px 28px;
}

.organizer-card {
  min-height: 210px;
  padding: 24px 18px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(17, 17, 17, 0.07);
  text-align: center;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  justify-items: center;
}

.organizer-avatar {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 6px solid rgba(255, 255, 255, 0.90);
  box-shadow: 0 14px 30px rgba(79, 94, 160, 0.12);
  background: linear-gradient(135deg, #b8c7ff, #edf2ff);
  color: var(--accent-2);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.organizer-avatar.yiming {
  background: #edf2ff url("../image/organizer/yiming_wang.jpg") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.loris {
  background: #edf2ff url("../image/organizer/loris.jpg") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.zanxi {
  background: #edf2ff url("../image/organizer/zanxi-id.png") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.umberto {
  background: #edf2ff url("../image/organizer/umberto.jpg") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.fabian {
  background: #edf2ff url("../image/organizer/fabian.png") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.marco {
  background: #edf2ff url("../image/organizer/marco.png") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.nuria {
  background: #edf2ff url("../image/organizer/nuria.jpg") center / cover no-repeat;
  color: transparent;
}

.organizer-avatar.nicu {
  background: #edf2ff url("../image/organizer/nicu.jpg") center / cover no-repeat;
  color: transparent;
}

.organizer-card h3 {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 7px;
}

.organizer-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  margin-bottom: 12px;
}

.organizer-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(223, 231, 255, 0.78);
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
}

.speaker-page-header {
  padding: 0 26px 28px;
}

.speaker-page-header h1 {
  max-width: 980px;
  margin-bottom: 16px;
}

.speaker-page-header p {
  max-width: 900px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.68;
}

.speaker-bio-list {
  display: grid;
  gap: 22px;
  padding: 0 26px 34px;
}

.speaker-bio-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  align-items: start;
  padding: 28px;
  scroll-margin-top: 96px;
}

.speaker-bio-media {
  display: grid;
  justify-items: start;
}

.speaker-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.speaker-home-button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(223, 231, 255, 0.82);
  border: 1px solid rgba(111, 131, 216, 0.18);
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 12px 24px rgba(79, 94, 160, 0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.speaker-home-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(79, 94, 160, 0.16);
}

.speaker-bio-photo {
  width: 168px;
  height: 168px;
  border-width: 8px;
}

.speaker-bio-content {
  min-width: 0;
}

.speaker-order {
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.speaker-bio-content h2 {
  color: var(--ink);
  font-size: clamp(30px, 3.2vw, 48px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin-bottom: 0;
}

.speaker-bio-content .role {
  color: var(--muted);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
}

.speaker-bio-content p {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.72;
  margin-bottom: 12px;
}

.speaker-page-hero {
  min-height: 428px;
  display: grid;
  grid-template-columns: minmax(500px, 0.88fr) minmax(560px, 1.12fr);
  gap: 34px;
  align-items: stretch;
  padding: 0 26px 34px;
}

.speaker-mini-card {
  left: 54px;
  top: 46px;
  width: min(440px, 54%);
  padding: 25px;
  border-radius: 28px;
  z-index: 4;
}

.portrait-wrap {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 20px;
  align-items: center;
}

.portrait {
  width: 116px;
  height: 116px;
  border-radius: 50%;
  background: #edf2ff url("../image/ChenChangeLoy_logo.png") center / cover no-repeat;
  border: 7px solid rgba(255, 255, 255, 0.90);
  box-shadow: 0 15px 28px rgba(79, 94, 160, 0.13);
  position: relative;
  overflow: hidden;
}

.speaker-mini-card h2 {
  font-size: 35px;
  line-height: 1.05;
  letter-spacing: -0.045em;
  font-weight: 700;
  margin-bottom: 10px;
}

.speaker-mini-card .role {
  color: var(--muted);
  line-height: 1.45;
  font-weight: 700;
  font-size: 14px;
}

.talk-note {
  margin-top: 24px;
  padding: 18px 18px 16px;
  border-radius: 18px;
  background: rgba(223, 231, 255, 0.58);
  border: 1px solid rgba(159, 183, 255, 0.24);
}

.talk-note .label {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 12px;
  margin-bottom: 8px;
}

.talk-note p {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.58;
  font-weight: 700;
}

.bio-panel {
  padding: 0 28px 28px;
}

.bio-panel p {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.76;
  font-weight: 520;
  margin-top: 13px;
}

.highlight-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.highlight {
  min-height: 128px;
  padding: 22px 20px;
  border-right: 1px solid var(--line);
}

.highlight:last-child {
  border-right: 0;
}

.highlight .circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(223, 231, 255, 0.86);
  margin-bottom: 14px;
}

.highlight:nth-child(2) .circle {
  background: rgba(205, 216, 255, 0.62);
}

.highlight strong {
  display: block;
  font-size: 16px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.highlight span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  font-weight: 650;
}

.talk-panel {
  min-height: 100%;
  padding: 0 26px 26px;
}

.talk-card {
  margin-top: 10px;
  padding: 28px;
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.72), rgba(255,255,255,0.42)),
    radial-gradient(circle at 94% 12%, rgba(205, 216, 255, 0.28), transparent 28%);
  border: 1px solid rgba(17, 17, 17, 0.08);
  position: relative;
  overflow: hidden;
}

.talk-card::before {
  content: "";
  position: absolute;
  right: 22px;
  top: 20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(223, 231, 255, 0.52);
}

.talk-card h3 {
  position: relative;
  max-width: 660px;
  font-size: clamp(30px, 2.8vw, 46px);
  line-height: 1.06;
  letter-spacing: -0.05em;
  font-weight: 700;
  margin-bottom: 18px;
}

.talk-card p {
  position: relative;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 520;
  max-width: 760px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(223, 231, 255, 0.80);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  border: 1px solid rgba(111, 131, 216, 0.16);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--accent-2);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.program-panel {
  margin: 0 26px 24px;
}

.program-grid {
  display: grid;
  grid-template-columns: minmax(520px, 1.2fr) minmax(360px, 0.8fr);
  gap: 20px;
  padding: 0 24px 28px;
}

.program-card {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(17, 17, 17, 0.07);
  padding: 24px;
}

.deadline-card {
  background: rgba(255, 255, 255, 0.72);
}

.program-card h3 {
  color: var(--ink);
  font-size: clamp(24px, 2.4vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.program-list,
.timeline-list {
  display: grid;
  gap: 12px;
}

.program-list li,
.timeline-list li {
  position: relative;
  display: grid;
  grid-template-columns: 9px 128px 1fr;
  align-items: center;
  gap: 18px;
  min-height: 48px;
  padding: 12px 14px 12px 18px;
  border-radius: 16px;
  background: rgba(223, 231, 255, 0.36);
  border: 1px solid rgba(111, 131, 216, 0.10);
}

.program-list li::before,
.timeline-list li::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-2);
  flex: 0 0 auto;
}

.program-list span,
.timeline-list span {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.35;
  font-weight: 700;
}

.program-list time,
.timeline-list time {
  color: var(--accent-2);
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}

.program-list,
.timeline-list {
  list-style: none;
}

.timeline-note {
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 700;
  margin: -8px 0 14px;
}

.pill-button {
  min-width: 150px;
  min-height: 44px;
  border-radius: 11px;
  border: 0;
  color: var(--ink);
  background: rgba(223, 231, 255, 0.92);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 17px;
  box-shadow: 0 10px 22px rgba(111, 131, 216, 0.14);
}

.footer {
  min-height: 78px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 0 76px 8px;
  color: var(--ink);
  font-weight: 700;
}

.footer-center {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 17px;
}

.spark {
  color: var(--accent-2);
  font-size: 24px;
  line-height: 1;
}

.footer-left {
  height: 48px;
  position: relative;
}

.footer-left::before {
  content: "";
  position: absolute;
  left: 8px;
  bottom: 16px;
  width: 320px;
  height: 28px;
  border-bottom: 4px solid rgba(159, 183, 255, 0.48);
  border-radius: 50%;
  transform: rotate(-2deg);
}

.footer-left::after {
  content: "✦";
  position: absolute;
  left: 0;
  bottom: 6px;
  color: var(--accent);
  font-size: 42px;
  transform: rotate(-18deg);
}

.footer-icons {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--ink);
}

.mobile-menu {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

@media (max-width: 1240px) {
  .topbar {
    padding: 0 30px;
  }

  nav {
    display: none;
  }

  .mobile-menu {
    display: flex;
  }

  main {
    padding: 34px 24px 0;
  }

  .hero,
  .speaker-page-hero,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .hero,
  .speaker-page-hero {
    padding: 0 0 28px;
  }

  .hero-visual {
    width: min(100%, 640px);
    min-height: 286px;
    justify-self: center;
  }

  .speaker-teaser {
    grid-template-columns: 1fr;
  }

  .about-intro,
  .about-pillars,
  .cfp-hero,
  .cfp-grid {
    grid-template-columns: 1fr;
  }

  .cfp-deadline-banner {
    grid-column: auto;
    grid-row: auto;
    min-height: 0;
  }

  .cfp-stepper {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .cfp-step:nth-child(4) {
    border-right: 0;
  }

  .cfp-step:nth-child(n + 5) {
    border-top: 1px solid rgba(17, 17, 17, 0.07);
  }

  .speaker-list,
  .speaker-bio-card,
  .organizer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .speaker-bio-card {
    grid-template-columns: 140px 1fr;
  }

  .speaker-bio-photo {
    width: 132px;
    height: 132px;
  }

  .topics {
    grid-template-columns: 1fr 1fr;
  }

  .program-grid {
    grid-template-columns: 1fr;
  }

  .flow-card {
    grid-row: auto;
  }
}

@media (max-width: 760px) {
  .brand-title {
    font-size: 17px;
    letter-spacing: -0.035em;
  }

  .brand-subtitle {
    font-size: 9px;
  }

  .brand-logo {
    width: 36px;
    height: 36px;
  }

  .submit-button {
    display: none;
  }

  .topbar {
    height: 66px;
    padding: 0 18px;
  }

  .site-shell {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }

  main {
    width: 100%;
    max-width: 100vw;
    padding: 28px 18px 0;
    overflow-x: hidden;
  }

  h1 {
    font-size: 44px;
    max-width: 100%;
  }

  .title-human {
    padding-right: 54px;
    max-width: 100%;
  }

  .ai-robot {
    width: 42px;
    height: 38px;
    border-width: 2px;
  }

  .hero-title-row {
    display: grid;
    justify-items: start;
    gap: 16px;
  }

  .animated-title,
  .title-line,
  .morph-word {
    max-width: 100%;
  }

  .hero-submit-button {
    min-height: 48px;
    padding: 0 22px;
    font-size: 15px;
    transform: none;
  }

  .hero-visual {
    width: 100%;
    max-width: calc(100vw - 72px);
    min-height: auto;
    aspect-ratio: 16 / 9;
  }

  .summary {
    width: calc(100vw - 72px) !important;
    max-width: calc(100vw - 72px) !important;
  }

  .meta-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px 18px;
    font-size: 16px;
    max-width: calc(100vw - 72px);
  }

  .meta-item {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .speaker-teaser {
    margin: 0 0 28px;
    padding: 14px;
    width: calc(100vw - 36px);
    min-width: 0;
    max-width: calc(100vw - 36px);
    overflow: hidden;
  }

  .teaser-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    width: 100%;
    min-width: 0;
  }

  .teaser-speaker {
    min-height: 124px;
    padding: 12px 8px;
  }

  .teaser-speaker span:last-child {
    font-size: 16px;
  }

  .teaser-copy,
  .about-content,
  .about-flow,
  .teaser-speaker,
  .hero,
  .hero-copy,
  .vision-panel,
  .about-workshop,
  .cfp-section,
  .cfp-grid,
  .cfp-stepper,
  .topics,
  .section-grid,
  .program-panel {
    min-width: 0;
    max-width: 100%;
  }

  .teaser-speaker span:last-child,
  .summary,
  .section-title,
  .about-workshop .section-title,
  .cfp-section .section-title,
  .topics-header p,
  .about-content p,
  .about-flow p,
  .cfp-lead,
  .cfp-info-card p,
  .cfp-format-list span,
  .cfp-topic-tags li {
    overflow-wrap: break-word;
  }

  .teaser-link {
    justify-self: start;
  }

  .sketch-person,
  .tablet,
  .ai-figure {
    display: none;
  }

  .floating-note,
  .generation-panel,
  .assistant-note,
  .refine-note,
  .speaker-mini-card {
    left: 20px;
    right: auto;
    width: calc(100% - 40px);
  }

  .floating-note { top: 26px; }
  .generation-panel { top: 168px; }
  .refine-note { top: 330px; bottom: auto; }
  .assistant-note { top: 472px; bottom: auto; }
  .speaker-mini-card { top: 24px; }
  .speaker-mini-card + .floating-note { top: 318px; }

  .portrait-wrap {
    grid-template-columns: 1fr;
  }

  .about-workshop,
  .vision-panel,
  .cfp-section,
  .speakers-panel,
  .organizers {
    margin: 0 0 28px;
  }

  .about-workshop,
  .cfp-section {
    padding: 0 16px 22px;
    width: calc(100vw - 36px);
    max-width: calc(100vw - 36px);
    overflow: hidden;
  }

  .about-workshop .panel-header {
    padding: 22px 0 14px;
  }

  .about-intro,
  .about-pillars {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .about-intro p:first-child {
    font-size: 22px;
    max-width: 100%;
  }

  .about-flow p,
  .cfp-lead {
    font-size: 16px;
    line-height: 1.68;
    width: calc(100vw - 96px) !important;
    max-width: calc(100vw - 96px) !important;
  }

  .about-pillars-lead,
  .about-pillars .vision-card strong,
  .about-pillars .vision-card span,
  .cfp-info-card h3,
  .cfp-info-card p,
  .cfp-format-list strong,
  .cfp-format-list span {
    width: calc(100vw - 140px) !important;
    max-width: calc(100vw - 140px) !important;
    overflow-wrap: anywhere;
  }

  .about-pillars {
    padding: 16px;
    border-radius: 20px;
  }

  .hero,
  .hero-copy,
  .about-flow,
  .about-intro,
  .about-pillars,
  .about-pillars .vision-cards,
  .about-outro,
  .cfp-hero,
  .cfp-grid,
  .cfp-topics {
    width: 100%;
    max-width: 100%;
  }

  .hero,
  .speaker-teaser,
  .about-workshop,
  .cfp-section {
    flex: 0 1 auto;
    width: calc(100vw - 36px);
    max-width: calc(100vw - 36px);
  }

  .about-flow p,
  .cfp-lead,
  .cfp-info-card p,
  .cfp-format-list span,
  .cfp-topic-tags li {
    min-width: 0;
    width: 100%;
  }

  .about-outro {
    padding-left: 16px;
  }

  .about-content {
    columns: 1;
    column-gap: 0;
    padding: 0 14px 22px;
  }

  .cfp-hero {
    padding: 22px 0;
  }

  .cfp-deadline-banner {
    padding: 20px;
    border-radius: 20px;
  }

  .cfp-stepper {
    grid-template-columns: 1fr;
  }

  .cfp-step,
  .cfp-step:nth-child(4),
  .cfp-step:nth-child(n + 5) {
    grid-template-columns: 16px 78px 1fr;
    align-items: center;
    min-height: 0;
    padding: 16px;
    border-top: 0;
    border-right: 0;
    border-bottom: 1px solid rgba(17, 17, 17, 0.07);
  }

  .cfp-step:last-child {
    border-bottom: 0;
  }

  .cfp-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cfp-info-card {
    padding: 18px;
    border-radius: 20px;
  }

  .cfp-format-list li {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .cfp-topic-tags {
    gap: 9px;
  }

  .cfp-topic-tags li {
    min-height: 36px;
    padding: 8px 12px;
    border-radius: 14px;
  }

  .vision-cards,
  .speaker-list,
  .speaker-bio-card,
  .organizer-grid,
  .topics,
  .highlight-strip,
  .program-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .speaker-bio-card {
    padding: 22px;
  }

  .speakers-panel {
    padding: 0 14px 22px;
  }

  .vision-card,
  .highlight {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .footer {
    grid-template-columns: 1fr;
    padding: 16px 26px 28px;
    text-align: center;
  }

  .footer-left {
    display: none;
  }

  .footer-icons {
    justify-self: center;
  }
}
.x-icon {
  font-size: 22px;
  font-weight: 700;
}

/* 标题缩小一档 */
.about-workshop .section-title {
  font-size: clamp(22px, 2.1vw, 32px);
}

/* === lead 大手写句 === */
.about-lead {
  position: relative;
  display: inline-block;
  width: fit-content;
  max-width: 100%;
  font-family: "Caveat", "Brush Script MT", "Marker Felt", cursive;
  font-size: clamp(46px, 5.2vw, 76px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin-bottom: 30px;
  padding-bottom: 22px;
}

/* 粉色波浪线 — 平铺 + 缓慢飘动 */
.about-lead::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 14px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='14' viewBox='0 0 200 14'><path d='M0,8 Q50,0 100,8 T200,8' stroke='%23ff6fb1' stroke-width='3' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: repeat-x;
  background-size: 200px 14px;
  animation: wave-drift 7s linear infinite;
  opacity: 0.88;
}

@keyframes wave-drift {
  from { background-position: 0 0; }
  to   { background-position: -200px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .about-lead::after { animation: none; }
}

/* === 三个原则：横排装饰卡片 === */
.about-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
  padding-left: 0;
  border-left: none;
}

.principle {
  position: relative;
  padding: 26px 22px 22px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(17, 17, 17, 0.06);
  box-shadow: 0 10px 24px rgba(79, 94, 160, 0.06);
  overflow: hidden;
  transition: transform 280ms cubic-bezier(.68,-0.2,.27,1.4),
              box-shadow 280ms ease;
}

/* 角落彩色色块 */
.principle::before {
  content: "";
  position: absolute;
  top: -28px;
  right: -28px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  opacity: 0.22;
  transition: transform 400ms ease;
}

.principle:nth-child(1)::before { background: #ff9f43; }
.principle:nth-child(2)::before { background: #5f8cff; }
.principle:nth-child(3)::before { background: #ff6fb1; }

.principle:hover {
  transform: translateY(-4px) rotate(-0.6deg);
  box-shadow: 0 18px 32px rgba(79, 94, 160, 0.12);
}

.principle:hover::before {
  transform: scale(1.18) rotate(12deg);
}

.principle-title {
  display: block;
  font-family: "Caveat", cursive;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin-bottom: 6px;
  padding-left: 0;
}
.principle-title::before { content: none; }

.principle-desc {
  display: block;
  padding-left: 0;
  font-size: 15.5px;
  line-height: 1.55;
  font-style: italic;
  color: var(--muted);
}

@media (max-width: 900px) {
  .about-principles {
    grid-template-columns: 1fr;
    border-top: none;
    padding-top: 0;
  }
}
.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: auto;
  padding: 50px 24px 60px;
  background: transparent;
  grid-template-columns: none;
}
.sticky-note {
  position: relative;
  width: min(460px, 100%);
  padding: 22px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  background: linear-gradient(160deg, #ffe4ee 0%, #ffc9dc 100%);
  border-radius: 4px 14px 6px 12px;
  box-shadow:
    0 1px 0 rgba(0,0,0,0.04),
    0 12px 24px rgba(220, 130, 170, 0.20),
    0 22px 50px rgba(180, 90, 130, 0.12);
  transform: rotate(-1.2deg);
  transition: transform 320ms cubic-bezier(.68,-0.2,.27,1.4);
  text-align: left;
}

.sticky-note:hover {
  transform: rotate(-0.2deg) translateY(-3px);
}

.sticky-note::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, transparent 50%, rgba(0,0,0,0.05) 50%, rgba(180, 90, 130, 0.20) 100%);
  border-radius: 0 0 12px 0;
}

.sticky-tape {
  position: absolute;
  left: 50%;
  top: -12px;
  transform: translateX(-50%) rotate(-2deg);
  width: 96px;
  height: 22px;
  background: rgba(159, 183, 255, 0.42);
  border: 1px solid rgba(159, 183, 255, 0.30);
  border-radius: 2px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
  backdrop-filter: blur(2px);
}

.sticky-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  width: 100%;
}


.sticky-label {
  display: block;
  font-family: "Caveat", "Brush Script MT", cursive;
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  color: #7a3a55;
  letter-spacing: 0.01em;
  margin: 0;
}

.sticky-email {
  display: block;
  font-family: "Caveat", cursive;
  font-size: 26px;
  line-height: 1.15;
  font-weight: 600;
  color: #2f3b8a;
  text-decoration: underline;
  text-decoration-color: rgba(47, 59, 138, 0.35);
  text-underline-offset: 4px;
  word-break: break-all;
  margin: 0;
}

.sticky-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 0 0 20px;
  border-top: none;
  border-left: 1px dashed rgba(160, 80, 120, 0.30);
  margin-left: 0;
  color: #7a3a55;
  flex-shrink: 0;
}

@media (max-width: 760px) {
  .sticky-note {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 32px 26px 22px;
    transform: rotate(-1deg);
    gap: 14px;
  }
  .sticky-icons {
    border-left: none;
    border-top: 1px dashed rgba(160, 80, 120, 0.30);
    padding: 12px 0 0;
    margin-left: 0;
  }
  .sticky-label { font-size: 22px; }
  .sticky-email { font-size: 22px; }
}
.about-workshop,
.cfp-section,
.speakers-panel,
.organizers,
.program-panel,
.footer {
  scroll-margin-top: 90px;
}
.sponsors {
  margin: 0 26px 34px;
  padding: 26px 28px 32px;
  scroll-margin-top: 90px;
}

.sponsors .panel-header {
  padding: 0 0 12px;
}

.sponsors-lead {
  max-width: 780px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  margin: 0 0 30px;
}

.sponsor-tier-block {
  margin-bottom: 28px;
}

.sponsor-tier-block:last-child {
  margin-bottom: 0;
}

.sponsor-tier-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 16px;
}

/* === Gold Sponsor: 裸 logo,无边框无背景 === */
.sponsor-card--gold {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 0;
  background: none;
  border: none;
  box-shadow: none;
  text-decoration: none;
  color: inherit;
  transition: transform 240ms ease;
}

.sponsor-card--gold:hover {
  transform: translateY(-2px) scale(1.02);
}

.sponsor-card--gold .sponsor-logo {
  height: 64px;
  width: auto;
  max-width: 260px;
}

.sponsor-card--gold .sponsor-logo img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* === 支持机构: 也裸,只剩 logo + 名字 === */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 28px 24px;
}

.sponsor-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 12px;
  background: none;
  border: none;
  box-shadow: none;
  text-decoration: none;
  color: inherit;
  transition: transform 240ms ease, opacity 240ms ease;
  opacity: 0.85;
}

.sponsor-card:not(.sponsor-card--gold):hover {
  transform: translateY(-3px);
  opacity: 1;
}

.sponsor-logo {
  width: 100%;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sponsor-logo img {
  max-width: 85%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.sponsor-name {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--muted);
  text-align: center;
  line-height: 1.35;
}

@media (max-width: 760px) {
  .sponsors {
    margin: 0 0 28px;
    padding: 22px 18px;
    width: calc(100vw - 36px);
    max-width: calc(100vw - 36px);
  }
  .sponsor-card--gold .sponsor-logo {
    height: 52px;
  }
}
.canva-mention {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px 3px 9px;
  margin: 0 2px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 196, 204, 0.10), rgba(123, 71, 224, 0.10));
  border: 1px solid rgba(123, 71, 224, 0.22);
  font-weight: 700;
  text-decoration: none;
  background-image: linear-gradient(135deg, #00c4cc 0%, #7d2ae8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.canva-mention:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(123, 71, 224, 0.18);
}

.canva-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00c4cc, #7d2ae8);
  flex: 0 0 auto;
  box-shadow: 0 0 0 3px rgba(0, 196, 204, 0.14);
}
.sponsor-card--scale-up .sponsor-logo img {
  max-width: 100%;
  transform: scale(2.0);
  transform-origin: center;
}