/* ============================================================
   必火私教班 · 全站基础样式
   品牌主色 #BC1F1A · 圆角 / 留白 / 商务红色科技风
   ============================================================ */

:root {
  --brand: #BC1F1A;
  --brand-deep: #8E1612;
  --brand-soft: #FDF3F2;
  --brand-tint: #F9E6E4;
  --ink: #1A1A1A;
  --ink-2: #3D3D3D;
  --ink-3: #6B6B6B;
  --ink-4: #9A9A9A;
  --line: #ECECEC;
  --line-2: #E2E2E2;
  --paper: #FAFAF7;
  --paper-2: #F4F3EF;
  --white: #FFFFFF;
}

* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* ============================================================
   Brand Lockup · 品牌横向 logo（火焰 + 必火AI + 私教班）
   nav 和 footer 共用
   ============================================================ */
.brand-lockup {
  display: inline-flex;
  align-items: flex-end;     /* 文字对齐 logo 底部 */
  gap: 6px;
  text-decoration: none;
  color: inherit;
  line-height: 1;
  user-select: none;
}
.brand-flame {
  width: auto;
  height: 34px;
  color: var(--brand);
  flex: 0 0 auto;
  display: inline-block;
  margin-bottom: -2px;        /* 微调让红色底部和文字基线对齐 */
}
.brand-flame svg,
.brand-flame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.brand-name {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  letter-spacing: -0.005em;
}
.brand-name__main {
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

/* 新版：单文字版「必火AI私教班」全红 */
.brand-name-full {
  font-weight: 700;
  font-size: 18px;
  color: var(--brand);
  letter-spacing: -0.005em;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
}
footer .brand-name-full { font-size: 19px; }
@media (max-width: 640px) {
  .brand-name-full { font-size: 16px; }
  .brand-flame { width: auto; height: 27px; }
}
.brand-name__sep {
  color: var(--ink-4);
  font-weight: 400;
  font-size: 13px;
  transform: translateY(-1px);
}
.brand-name__sub {
  font-weight: 500;
  font-size: 13.5px;
  color: var(--ink-3);
  letter-spacing: 0.03em;
}
/* footer 版本：稍微大一点 */
footer .brand-flame { width: auto; height: 37px; }
footer .brand-name__main { font-size: 18px; }
footer .brand-name__sub { font-size: 14px; }

/* 在深色背景下（首页 Hero 浮层等）反白版 */
.brand-lockup--light .brand-name__main { color: #fff; }
.brand-lockup--light .brand-name__sub  { color: rgba(255,255,255,.7); }
.brand-lockup--light .brand-name__sep  { color: rgba(255,255,255,.4); }

@media (max-width: 640px) {
  .brand-name__main { font-size: 16px; }
  .brand-name__sub  { font-size: 12.5px; }
  .brand-flame { width: 22px; height: 28px; }
}

/* ============================================================
   Lightbox 图片放大
   ============================================================ */
[data-lightbox-group] .photo-slot { cursor: zoom-in; }

/* ============================================================
   视频反馈 · 竖屏横向滚动 reel
   ============================================================ */
.video-reel-scroll {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  overflow-y: visible;
  padding: 8px 4px 16px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: auto;       /* 关掉 smooth scroll，让自动滚动顺畅 */
}
.video-reel-scroll::-webkit-scrollbar { display: none; }

.video-reel-card {
  flex: 0 0 auto;
  width: calc((100% - 54px) / 4);  /* 一屏 4 张：(总宽 - 3 * gap 18px) / 4 */
  max-width: 360px;
  min-width: 180px;
  aspect-ratio: 9 / 16;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: #000;
  cursor: pointer;
  box-shadow: 0 14px 36px -22px rgba(0,0,0,.5);
  transition: transform .3s cubic-bezier(.16,1,.3,1), box-shadow .3s;
}
.video-reel-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 48px -22px rgba(0,0,0,.55);
}
.video-reel-card video,
.video-reel-card .video-reel-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.video-reel-card video { z-index: 1; }
.video-reel-card .video-reel-poster { z-index: 0; }

.video-reel-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: rgba(188,31,26,.92);
  color: white;
  border: none;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 28px rgba(188,31,26,.5);
  pointer-events: none;
  z-index: 3;
  transition: transform .25s, background .25s, opacity .25s;
}
.video-reel-play svg { width: 32px; height: 32px; margin-left: 3px; }
.video-reel-card:hover .video-reel-play {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--brand);
}
.video-reel-card.is-playing .video-reel-play,
.video-reel-card.is-playing .video-reel-poster {
  opacity: 0;
  pointer-events: none;
}

.video-reel-meta {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px 14px 12px;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 100%);
  color: white;
  z-index: 2;
  pointer-events: none;
  font-size: 13px;
}
.video-reel-sub {
  font-size: 11px;
  color: rgba(255,255,255,.7);
  margin-top: 2px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .video-reel-card { width: 200px; }
  .video-reel-play { width: 54px; height: 54px; }
  .video-reel-play svg { width: 22px; height: 22px; }
}
@media (max-width: 480px) {
  .video-reel-card { width: 170px; min-width: 160px; }
}

/* 现场视频 · 居中放大 + 点击播放 */
.gallery-video-wrap {
  max-width: 1100px;
  margin: 0 auto;
}
.gallery-video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.35);
  cursor: pointer;
}
.gallery-video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
}
.gallery-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: rgba(188,31,26,.9);
  color: white;
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 12px 36px rgba(188,31,26,.5);
  transition: transform .25s, background .25s;
  pointer-events: none;  /* 让父容器接管点击 */
}
.gallery-video-play svg { width: 36px; height: 36px; margin-left: 4px; }
.gallery-video-frame:hover .gallery-video-play {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--brand);
}
.gallery-video-frame.is-playing .gallery-video-play {
  opacity: 0;
  pointer-events: none;
}
.gallery-video-frame.is-playing video { cursor: pointer; }

@media (max-width: 768px) {
  .gallery-video-play { width: 64px; height: 64px; }
  .gallery-video-play svg { width: 26px; height: 26px; }
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 80px;
  animation: lightbox-in .25s ease-out;
  backdrop-filter: blur(6px);
}
.lightbox[hidden] { display: none !important; }

@keyframes lightbox-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lightbox-img {
  max-width: 100%;
  max-height: calc(100vh - 140px);
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
  user-select: none;
}

.lightbox-close,
.lightbox-arrow {
  position: absolute;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.8);
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .2s, color .2s, border-color .2s;
  backdrop-filter: blur(8px);
}
.lightbox-close:hover,
.lightbox-arrow:hover {
  background: rgba(255,255,255,.15);
  color: white;
  border-color: rgba(255,255,255,.4);
}

.lightbox-close {
  top: 24px;
  right: 24px;
  width: 42px;
  height: 42px;
}
.lightbox-arrow {
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
}
.lightbox-arrow-prev { left: 24px; }
.lightbox-arrow-next { right: 24px; }

.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.7);
  font-size: 13px;
  letter-spacing: 0.02em;
  background: rgba(0,0,0,.4);
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

@media (max-width: 768px) {
  .lightbox { padding: 60px 16px; }
  .lightbox-arrow { width: 40px; height: 40px; }
  .lightbox-arrow-prev { left: 8px; }
  .lightbox-arrow-next { right: 8px; }
}

/* ============================================================
   关于页 · 必火AI 官网 CTA 卡片
   ============================================================ */
.about-cta {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  padding: 64px 56px;
  background:
    radial-gradient(ellipse 80% 60% at 0% 0%, rgba(255,255,255,.08), transparent 60%),
    linear-gradient(135deg, #8E1612 0%, #BC1F1A 50%, #E63D2A 100%);
  color: #fff;
  box-shadow:
    0 30px 80px -30px rgba(188,31,26,.55),
    0 1px 0 rgba(255,255,255,.15) inset;
}
.about-cta-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 90% 70% at 80% 30%, black 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 80% 30%, black 0%, transparent 80%);
}
.about-cta-glow {
  position: absolute;
  right: -120px;
  top: -120px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.22), transparent 60%);
  pointer-events: none;
  filter: blur(10px);
}

.about-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}
.about-cta-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,.75);
  margin-bottom: 24px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(6px);
}
.about-cta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px rgba(255,255,255,.8);
  animation: about-cta-pulse 2s ease-in-out infinite;
}
@keyframes about-cta-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.8); }
}

.about-cta-headline {
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
}
.about-cta-accent {
  background: linear-gradient(90deg, #fff 0%, #FFD9D5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 24px rgba(255,255,255,.3);
}

.about-cta-sub {
  margin-top: 26px;
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255,255,255,.85);
  max-width: 720px;
}

.about-cta-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
  padding: 18px 32px;
  background: #fff;
  color: var(--brand-deep);
  border-radius: 999px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  box-shadow:
    0 1px 0 rgba(0,0,0,.05) inset,
    0 14px 30px -10px rgba(0,0,0,.35);
  transition: transform .25s cubic-bezier(.16,1,.3,1), box-shadow .25s, background .25s;
  position: relative;
}
.about-cta-button:hover {
  transform: translateY(-3px);
  background: #FFF5F4;
  box-shadow:
    0 1px 0 rgba(0,0,0,.05) inset,
    0 20px 36px -10px rgba(0,0,0,.4);
}
.about-cta-button:hover .about-cta-arrow {
  transform: translateX(6px);
}
.about-cta-arrow {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  transition: transform .3s cubic-bezier(.16,1,.3,1);
}

.about-cta-url {
  margin-top: 16px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,.6);
}

@media (max-width: 768px) {
  .about-cta {
    padding: 44px 28px;
    border-radius: 18px;
  }
  .about-cta-headline { font-size: 30px; }
  .about-cta-sub { font-size: 15px; margin-top: 20px; }
  .about-cta-button {
    width: 100%;
    justify-content: space-between;
    padding: 16px 24px;
    font-size: 15px;
  }
}

/* ============================================================
   报名页 · 顶部说明条 + 底部流程卡
   ============================================================ */
.enroll-notice-wrap {
  padding: 28px 0 4px;
}
.enroll-notice {
  display: flex;
  gap: 18px;
  padding: 22px 28px;
  border-radius: 14px;
  background:
    linear-gradient(90deg, rgba(188,31,26,0.08), rgba(188,31,26,0.02) 70%, transparent),
    var(--brand-soft);
  border: 1px solid var(--brand-tint);
  align-items: center;
}
.enroll-notice-icon {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px -6px rgba(188,31,26,.5);
}
.enroll-notice-content { min-width: 0; }
.enroll-notice-title {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand-deep);
  margin-bottom: 4px;
}
.enroll-notice-text {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.6;
  margin: 0;
}

/* 报名流程卡（底部 #consult 区右侧）*/
.enroll-steps-card {
  background: #fff;
  color: var(--ink);
  border-radius: 24px;
  padding: 32px 30px 26px;
  box-shadow: 0 24px 60px -28px rgba(0,0,0,.5);
}
.enroll-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-2);
}
.enroll-step:last-of-type { border-bottom: none; }
.enroll-step-num {
  flex: 0 0 auto;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--brand);
  width: 32px;
  letter-spacing: -0.02em;
}
.enroll-step-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}
.enroll-step-desc {
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 3px;
  line-height: 1.55;
}
.enroll-step-foot {
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--brand-soft);
  border-radius: 10px;
  font-size: 12px;
  color: var(--brand-deep);
  line-height: 1.65;
}

@media (max-width: 640px) {
  .enroll-notice {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 20px;
  }
  .enroll-notice-text { font-size: 14px; }
}

/* Footer slogan：强调标语 */
.footer-slogan {
  color: var(--ink-2);
  font-size: 13px;
  letter-spacing: 0.01em;
}
.footer-slogan .text-brand {
  letter-spacing: 0.04em;
}
@media (max-width: 768px) {
  .footer-slogan { font-size: 12.5px; }
}


html, body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--white);
  font-feature-settings: 'tnum' 1, 'ss01' 1;
  letter-spacing: 0.01em;
}

.font-display {
  font-family: 'Space Grotesk', 'Inter', -apple-system, 'PingFang SC', sans-serif;
  letter-spacing: -0.02em;
}

.font-mono {
  font-family: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, monospace;
}

/* ---------- Brand utilities ---------- */
.text-brand { color: var(--brand); }
.bg-brand { background: var(--brand); }
.bg-brand-soft { background: var(--brand-soft); }
.bg-paper { background: var(--paper); }
.bg-paper-2 { background: var(--paper-2); }
.border-brand { border-color: var(--brand); }
.ring-brand { box-shadow: 0 0 0 1px var(--brand); }

/* ---------- Eyebrow（节制使用，整页 ≤ 2 次） ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: "";
  width: 18px; height: 1px;
  background: var(--brand);
}

/* ---------- 主按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px;
  min-height: 44px; /* iOS 触摸目标最小标准 */
  font-size: 14px; font-weight: 500;
  border-radius: 999px;
  transition: transform .25s cubic-bezier(.16,1,.3,1), background .25s, color .25s, box-shadow .25s;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--brand);
  color: white;
  box-shadow: 0 1px 0 rgba(255,255,255,.2) inset,
              0 8px 24px -8px rgba(188, 31, 26, .55);
}
.btn-primary:hover { background: var(--brand-deep); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

/* nav 右侧小按钮 · 极简版 */
.btn-cta-small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  min-height: 36px; /* 桌面 nav 按钮，紧凑但仍有合理点击区 */
  font-size: 12.5px;
  font-weight: 500;
  border-radius: 999px;
  background: var(--brand);
  color: white;
  white-space: nowrap;
  transition: background .2s;
  letter-spacing: 0.02em;
}
.btn-cta-small:hover { background: var(--brand-deep); }

/* 次 CTA · 报名前自测（黑色填充，主 CTA 左侧）*/
.btn-cta-assessment {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  min-height: 36px;
  font-size: 12.5px;
  font-weight: 500;
  border-radius: 999px;
  background: var(--ink);
  color: white;
  white-space: nowrap;
  transition: background .2s, transform .2s;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.btn-cta-assessment:hover {
  background: #2a2a2e;
  transform: translateY(-1px);
}

/* 移动 drawer 里的次 CTA */
.mobile-cta-assessment {
  color: var(--ink) !important;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-2);
}
.btn-ghost:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand);
  transform: translateY(-1px);
}

.btn-dark {
  background: var(--ink);
  color: white;
}
.btn-dark:hover { background: #000; transform: translateY(-1px); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: rgba(255,255,255,.82);
  border-bottom: 1px solid var(--line);
}
.nav-link {
  font-size: 14px;
  color: var(--ink-2);
  transition: color .25s cubic-bezier(.16,1,.3,1);
  position: relative;
  padding: 6px 0;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s cubic-bezier(.16,1,.3,1);
}
.nav-link:hover { color: var(--brand); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--brand); }
.nav-link.active::after { transform: scaleX(1); }

/* ---------- 卡片 ---------- */
.card {
  border-radius: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform .35s cubic-bezier(.16,1,.3,1), border-color .25s, box-shadow .35s;
}
.card-hover:hover {
  border-color: var(--brand);
  background: linear-gradient(135deg, #FFFAFA 0%, #FFFFFF 60%);
  transform: translateY(-4px);
  box-shadow:
    0 24px 48px -18px rgba(188,31,26,.22),
    0 8px 20px -10px rgba(188,31,26,.10),
    inset 0 1px 0 rgba(255,255,255,.6);
}
/* 暗色背景下的 card-hover 不变白底 */
.bg-paper .card-hover:hover { background: white; }

.card-brand-hover {
  position: relative;
  overflow: hidden;
}
.card-brand-hover::after {
  content: "";
  position: absolute; left: 0; bottom: 0; height: 3px; width: 0;
  background: var(--brand);
  transition: width .4s cubic-bezier(.16,1,.3,1);
}
.card-brand-hover:hover::after { width: 100%; }

/* ---------- 悬停展开（PC 端 hover-reveal、移动端点击） ---------- */
.reveal-group { position: relative; }
.reveal-body {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height .5s cubic-bezier(.16,1,.3,1), opacity .35s, margin .35s;
}
.reveal-group:hover .reveal-body,
.reveal-group.is-open .reveal-body {
  max-height: 800px;
  opacity: 1;
  margin-top: 18px;
}

/* ---------- 照片占位 ---------- */
.photo-slot {
  position: relative;
  background: linear-gradient(135deg, var(--paper-2) 0%, #EBE9E3 100%);
  border-radius: 18px;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-3);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.photo-slot::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(0,0,0,.06) 1px, transparent 0);
  background-size: 12px 12px;
  opacity: .6;
}
.photo-slot-label {
  position: relative;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 999px;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.2em;
}
.photo-slot-tag {
  position: absolute;
  top: 16px; left: 16px;
  background: rgba(26,26,26,.8);
  color: white;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.08em;
  z-index: 2;
  backdrop-filter: blur(8px);
}
.photo-slot-tag--right {
  left: auto;
  right: 16px;
  background: rgba(255,255,255,.92);
  color: var(--ink);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* 动态注入的照片右下角中文分类徽章 */
.photo-cat-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.05em;
  backdrop-filter: blur(6px);
  z-index: 2;
  pointer-events: none;
}
.photo-slot-tag--right .tag-num {
  color: var(--brand);
  font-weight: 700;
  font-size: 13px;
  margin: 0 2px;
  font-family: 'Space Grotesk', 'PingFang SC', sans-serif;
}

/* 真实照片：放在 photo-slot 里时，自动覆盖占位 */
.photo-slot img.photo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  border-radius: inherit;
  transition: transform .6s cubic-bezier(.16,1,.3,1), filter .4s;
}
.photo-slot:has(img.photo-img)::before { display: none; }
.photo-slot:has(img.photo-img) .photo-slot-label { display: none; }
.photo-slot:has(img.photo-img):hover img.photo-img {
  transform: scale(1.04);
}
.photo-slot::after { /* 暗角，让顶部 tag 更可读 */
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.18) 0%, transparent 35%);
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  border-radius: inherit;
}
.photo-slot:has(img.photo-img)::after { opacity: 1; }

/* 姓氏首字符头像（讲师头像占位） */
.avatar-initial {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FDF3F2 0%, #F9E6E4 100%);
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--brand-tint);
}
.avatar-initial::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(188,31,26,.10) 1px, transparent 0);
  background-size: 12px 12px;
  opacity: .8;
}
.avatar-initial-char {
  position: relative;
  font-family: 'Space Grotesk', -apple-system, 'PingFang SC', sans-serif;
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  color: var(--brand);
  letter-spacing: -0.02em;
}

/* 红色科技风装饰 */
.grid-bg {
  background-image:
    linear-gradient(rgba(188,31,26,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(188,31,26,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.dot-bg {
  background-image: radial-gradient(circle at 1px 1px, rgba(26,26,26,.12) 1px, transparent 0);
  background-size: 22px 22px;
}

/* 红色渐变印章 */
.brand-seal {
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  color: white;
  box-shadow: 0 18px 40px -14px rgba(188,31,26,.55);
}

/* ---------- Tab ---------- */
.tab-btn {
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink-3);
  background: transparent;
  border: 1px solid transparent;
  transition: all .2s;
  cursor: pointer;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}

/* ---------- Accordion ---------- */
.accordion-item {
  border-bottom: 1px solid var(--line);
}
.accordion-trigger {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%;
  padding: 26px 0;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: color .2s;
}
.accordion-trigger:hover { color: var(--brand); }
.accordion-icon {
  width: 28px; height: 28px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
  transition: transform .3s, background .2s, color .2s;
  flex-shrink: 0;
  color: var(--ink-2);
}
.accordion-item.is-open .accordion-icon {
  transform: rotate(45deg);
  background: var(--brand);
  color: white;
  border-color: var(--brand);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.16,1,.3,1), padding .3s;
  color: var(--ink-2);
  line-height: 1.75;
}
.accordion-item.is-open .accordion-body {
  max-height: 600px;
  padding-bottom: 26px;
}

/* ---------- 时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 12px; bottom: 12px;
  width: 1px;
  background: var(--line-2);
}
.timeline-node {
  position: relative;
  padding-bottom: 14px;
}
.timeline-node::before {
  content: "";
  position: absolute;
  left: -25px; top: 28px;
  width: 9px; height: 9px;
  border-radius: 999px;
  background: white;
  border: 2px solid var(--brand);
}
.timeline-node.is-open::before {
  background: var(--brand);
  box-shadow: 0 0 0 4px var(--brand-tint);
}

/* ---------- 链接 ---------- */
.link {
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
  transition: color .2s, border-color .2s;
}
.link:hover { color: var(--brand); border-color: var(--brand); }

/* ---------- 模板 utility ---------- */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.container-x { max-width: 1280px; margin-inline: auto; padding-inline: 24px; }

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-tight { padding: 48px 0; }
}

/* ---------- 文字渐入（仅入场，不持续动） ---------- */
@media (prefers-reduced-motion: no-preference) {
  .fade-in-up {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeInUp .8s cubic-bezier(.16,1,.3,1) forwards;
  }
  .fade-in-up.d-1 { animation-delay: .08s; }
  .fade-in-up.d-2 { animation-delay: .16s; }
  .fade-in-up.d-3 { animation-delay: .24s; }
  .fade-in-up.d-4 { animation-delay: .32s; }
  @keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
  }
}

/* 移动端导航抽屉 */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: white;
  z-index: 60;
  padding: 24px;
}
.mobile-nav.is-open { display: flex; flex-direction: column; }

/* 工具：禁止 selectable 装饰文本 */
.unselect { user-select: none; -webkit-user-select: none; }

/* ============================================================
   首屏电影感动效
   ============================================================ */

/* 背景 Ken Burns：30s 极缓慢缩放 + 位移，循环往返 */
.hero-bg.is-animated {
  animation: kenBurns 32s cubic-bezier(.45,.05,.55,.95) infinite alternate;
  transform-origin: 35% 50%;
}
@keyframes kenBurns {
  0% {
    transform: scale(1.01) translate(0, 0);
    filter: contrast(1.03) brightness(.97);
  }
  100% {
    transform: scale(1.07) translate(-1.5%, -1%);
    filter: contrast(1.05) brightness(1);
  }
}

/* 标题：逐字浮现 */
.hero-title-animated {
  /* 给字符腾出动画空间，防 baseline 抖动 */
  line-height: 0.96;
  padding-top: 4px;
  padding-bottom: 4px;
}
.hero-title-animated .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.55em) rotate(2deg);
  filter: blur(8px);
  animation: charIn 1s cubic-bezier(.16,1,.3,1) both;
  animation-delay: calc(var(--i, 0) * 80ms + 350ms);
  will-change: transform, opacity, filter;
}
@keyframes charIn {
  to {
    opacity: 1;
    transform: translateY(0) rotate(0);
    filter: blur(0);
  }
}

/* 红色横线扫过：开场一次（不循环，避免廉价感） */
.hero-sweep {
  position: absolute;
  top: 58%;
  left: 0;
  width: 100%;
  height: 1px;
  z-index: 3;
  background: linear-gradient(90deg,
              transparent 0%,
              rgba(188,31,26,0) 10%,
              rgba(188,31,26,.9) 45%,
              rgba(188,31,26,.9) 55%,
              rgba(188,31,26,0) 90%,
              transparent 100%);
  transform: translateX(-100%) scaleY(1);
  animation: heroSweep 2.4s cubic-bezier(.7,0,.3,1) 0.2s forwards;
  pointer-events: none;
  opacity: 0;
}
@keyframes heroSweep {
  0%   { transform: translateX(-100%) scaleY(1); opacity: 0; }
  10%  { opacity: 1; }
  50%  { transform: translateX(0%) scaleY(1); opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateX(100%) scaleY(1); opacity: 0; }
}

/* 背景图微微"心跳"亮度脉动（用 scrim 控制不动图本身） */
.hero-scrim.is-pulse {
  animation: scrimPulse 8s ease-in-out infinite;
}
@keyframes scrimPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: .92; }
}

/* 状态条：底部红点呼吸 */
.dot-pulse {
  position: relative;
}
.dot-pulse::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 999px;
  border: 1px solid var(--brand);
  opacity: 0;
  animation: dotPulse 2.2s ease-out infinite;
}
@keyframes dotPulse {
  0%   { transform: scale(.8); opacity: .9; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* ============================================================
   v2 Hover · 红色科技感觉醒
   ============================================================ */

/* 卡片左侧红色"标记杆"：所有 card-hover 共用 */
.card-hover { position: relative; }
.card-hover::before {
  content: "";
  position: absolute;
  left: 0; top: 24px; bottom: 24px;
  width: 3px;
  background: var(--brand);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transform: scaleY(0);
  transform-origin: top;
  transition: opacity .25s, transform .4s cubic-bezier(.16,1,.3,1);
  z-index: 3;
  pointer-events: none;
}
.card-hover:hover::before { opacity: 1; transform: scaleY(1); }

/* ── 4. 照片格子 hover：红描边 + 顶部 tag 变红 ── */
.photo-slot {
  transition: box-shadow .35s cubic-bezier(.16,1,.3,1),
              transform .35s cubic-bezier(.16,1,.3,1);
}
.photo-slot:hover {
  box-shadow:
    0 0 0 2px var(--brand),
    0 24px 40px -16px rgba(188,31,26,.4);
}
.photo-slot:has(img.photo-img):hover .photo-slot-tag {
  background: var(--brand);
}

/* ── 5. 大数据条数字 hover：放大 + 红光 ── */
.stat-group {
  transition: transform .3s cubic-bezier(.16,1,.3,1);
  cursor: pointer;
}
.stat-group:hover { transform: translateY(-4px); }
.stat-num {
  display: inline-block;
  transform-origin: left center;
  transition: transform .4s cubic-bezier(.16,1,.3,1),
              text-shadow .4s,
              color .25s;
}
.stat-group:hover .stat-num {
  transform: scale(1.06);
  text-shadow: 0 0 28px rgba(188,31,26,.55),
               0 0 60px rgba(188,31,26,.28);
}
.stat-group:hover .stat-num-white {
  color: var(--brand);
}

/* ── 6. 时间轴节点 hover ── */
.timeline-node {
  transition: border-color .3s, box-shadow .35s, transform .3s;
}
.timeline-node:hover {
  border-color: var(--brand);
  box-shadow: 0 18px 36px -14px rgba(188,31,26,.22);
}
.timeline-node:hover::before {
  background: var(--brand);
  box-shadow: 0 0 0 5px var(--brand-tint),
              0 0 18px 2px rgba(188,31,26,.55);
  transform: scale(1.3);
  transition: transform .3s cubic-bezier(.16,1,.3,1), box-shadow .3s;
}

/* ── 7. FAQ accordion hover：加号圆变红 ── */
.accordion-icon {
  transition: transform .3s, background .25s, color .25s, border-color .25s;
}
.accordion-trigger:hover .accordion-icon {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
}

/* ── 10. 讲师姓氏头像 hover：翻转为红底白字 ── */
.avatar-initial {
  transition: background .45s cubic-bezier(.16,1,.3,1),
              border-color .3s,
              box-shadow .4s,
              transform .35s;
  cursor: pointer;
}
.avatar-initial-char {
  transition: color .45s cubic-bezier(.16,1,.3,1),
              transform .5s cubic-bezier(.16,1,.3,1);
}
.avatar-initial:hover {
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  border-color: var(--brand);
  box-shadow: 0 18px 40px -12px rgba(188,31,26,.5);
  transform: translateY(-4px);
}
.avatar-initial:hover::before { opacity: .22; }
.avatar-initial:hover .avatar-initial-char {
  color: white;
  transform: scale(1.08);
}

/* ── 11. .link 箭头链接 hover：向右推 + 红化 ── */
.link {
  display: inline-block;
  transition: color .25s, border-color .25s, transform .3s cubic-bezier(.16,1,.3,1);
}
.link:hover {
  transform: translateX(4px);
  color: var(--brand);
  border-color: var(--brand);
}

/* ── 12. .tag-chip 反转 hover ── */
.tag-chip {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  border: 1px solid var(--brand-tint);
  transition: background .25s cubic-bezier(.16,1,.3,1),
              color .25s,
              transform .25s,
              box-shadow .25s,
              border-color .25s;
  cursor: pointer;
}
.tag-chip:hover {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px -4px rgba(188,31,26,.45);
}

/* ============================================================
   学员反馈滚动条（marquee）· 双行反向
   ============================================================ */
.marquee {
  position: relative;
  overflow-x: clip;
  overflow-y: visible;
  padding: 16px 0;
  mask-image: linear-gradient(90deg, transparent 0%, black 6%, black 94%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 6%, black 94%, transparent 100%);
}
.marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  animation: marqueeScroll 70s linear infinite;
  will-change: transform;
}
.marquee-track-reverse {
  animation-direction: reverse;
}
.marquee:hover .marquee-track {
  animation-play-state: paused;
}
@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* 反馈卡片样式 · 头像 + 公司职位 + 引用 */
.review-tile {
  flex-shrink: 0;
  width: 440px;
  padding: 32px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  transition: border-color .3s, box-shadow .3s, transform .3s;
  position: relative;
}
.review-tile:hover {
  border-color: var(--brand);
  box-shadow: 0 24px 44px -20px rgba(188,31,26,.28);
  transform: translateY(-3px);
}

/* 顶部红色引号装饰 */
.review-tile::before {
  content: "\201C";
  position: absolute;
  top: 18px;
  right: 28px;
  font-family: 'Space Grotesk', Georgia, serif;
  font-size: 56px;
  font-weight: 700;
  color: var(--brand);
  opacity: 0.18;
  line-height: 1;
}

/* Header：头像 + 姓名 + 公司职位 */
.review-tile-header {
  display: flex;
  align-items: center;
  gap: 14px;
}
.review-tile-avatar {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 8px 18px -8px rgba(188,31,26,.5);
  letter-spacing: -0.02em;
}
.review-tile-identity {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.review-tile-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.review-tile-role {
  font-size: 12.5px;
  color: var(--ink-3);
}

/* 引用文本 */
.review-tile-quote {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* 底部 meta */
.review-tile-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}
.review-tile-rating {
  color: var(--brand);
  letter-spacing: 0.18em;
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none !important; }
}
@media (max-width: 768px) {
  .review-tile { width: 340px; padding: 26px 24px; }
  .marquee-track { animation-duration: 50s; }
}

/* ============================================================
   内页主图 Hero · 通用样式（课程介绍 / 排期 / 讲师 / 相册 / 反馈 / 作品）
   ============================================================ */
.page-hero {
  position: relative;
  min-height: 56vh;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  background: #0a0505;
  color: white;
  padding: 96px 0 64px;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: contrast(1.05) saturate(.9);
  animation: pageHeroKenBurns 28s ease-in-out infinite alternate;
}
@keyframes pageHeroKenBurns {
  0%   { transform: scale(1.02) translate(0, 0); }
  100% { transform: scale(1.12) translate(-2%, -1%); }
}
.page-hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(60,60,65,.35) 0%, transparent 35%, rgba(60,60,65,.55) 100%),
    linear-gradient(90deg, rgba(60,60,65,.4) 0%, rgba(60,60,65,.18) 50%, rgba(60,60,65,.1) 100%);
}
.page-hero-grid {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(188,31,26,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(188,31,26,.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 50% at 25% 80%, transparent 0%, black 80%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 25% 80%, transparent 0%, black 80%);
  pointer-events: none;
}
.page-hero-content {
  position: relative;
  z-index: 5;
  width: 100%;
  padding-left: clamp(24px, 5vw, 96px);
  padding-right: clamp(24px, 5vw, 96px);
  max-width: 1400px;
  margin-inline: auto;
}
.page-hero h1 {
  color: white;
}
/* 角标装饰 */
.page-hero-corner {
  position: absolute;
  width: 28px; height: 28px;
  border: 1.5px solid var(--brand);
  z-index: 3;
  opacity: 0.7;
}
.page-hero-corner-tl { top: 32px; left: 32px; border-right: none; border-bottom: none; }
.page-hero-corner-br { bottom: 32px; right: 32px; border-left: none; border-top: none; }
@media (max-width: 768px) {
  .page-hero { min-height: 48vh; padding: 72px 0 48px; }
  .page-hero-corner { width: 20px; height: 20px; }
  .page-hero-corner-tl { top: 20px; left: 20px; }
  .page-hero-corner-br { bottom: 20px; right: 20px; }
}

/* ============================================================
   课程时间轴 v2 · Day 红色大方块 + 横向时段并列（全展开）
   ============================================================ */
.day-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  margin-bottom: 20px;
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.day-row:hover {
  border-color: var(--brand);
  box-shadow: 0 28px 56px -24px rgba(188,31,26,.28);
  transform: translateY(-2px);
}
.day-label {
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 56px;
  letter-spacing: -0.02em;
  position: relative;
  overflow: hidden;
  padding: 60px 24px;
  text-shadow: 0 2px 12px rgba(0,0,0,.15);
}
.day-label::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.day-slots {
  display: grid;
  gap: 0;
  padding: 36px 8px;
}
.day-slots-3 { grid-template-columns: repeat(3, 1fr); }
.day-slots-2 { grid-template-columns: repeat(2, 1fr); }

.slot {
  padding: 0 28px;
  border-left: 1px solid var(--line);
}
.slot:first-child { border-left: none; }

.slot-title {
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--brand);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.01em;
}
.slot-sep {
  color: var(--ink-4);
  font-weight: 400;
  opacity: .55;
}

.slot-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.slot-list li {
  padding: 7px 0;
  padding-left: 22px;
  position: relative;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.55;
}
.slot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
}

@media (max-width: 1024px) {
  .day-row { grid-template-columns: 160px 1fr; }
  .day-label { font-size: 42px; padding: 40px 16px; }
}
@media (max-width: 768px) {
  .day-row { grid-template-columns: 1fr; margin-bottom: 16px; }
  .day-label { padding: 22px; font-size: 32px; }
  .day-slots-3, .day-slots-2 { grid-template-columns: 1fr; padding: 8px 0 24px; gap: 0; }
  .slot { padding: 24px 24px 0; border-left: none; border-top: 1px solid var(--line); }
  .slot:first-child { padding-top: 24px; border-top: 1px solid var(--line); }
  .slot:first-child { border-top: none; padding-top: 24px; }
}

/* ============================================================
   学员成果清单（curriculum-table）· AI / IP / GEO 三色板块
   ============================================================ */
.curriculum-table {
  border-radius: 18px;
  overflow: hidden;
  background: white;
  border: 1px solid var(--line);
  box-shadow: 0 20px 40px -28px rgba(0,0,0,.08);
}
.curriculum-row {
  display: grid;
  grid-template-columns: 170px 1fr 2.4fr;
  border-bottom: 1px solid var(--line);
}
.curriculum-row:last-child { border-bottom: none; }

/* 表头 · 红色横条 */
.curriculum-header {
  background: linear-gradient(90deg, #BC1F1A 0%, #E63D2A 100%);
  color: white;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: 14px;
}
.curriculum-header > div {
  padding: 14px 28px;
  border-left: 1px solid rgba(255,255,255,.18);
  text-align: center;
  letter-spacing: 0.06em;
}
.curriculum-header > div:first-child { border-left: none; }

/* 数据行 · 通用单元格 */
.curriculum-row:not(.curriculum-header) > div {
  padding: 22px 24px;
  border-left: 1px solid var(--line);
}
.curriculum-row:not(.curriculum-header) > div:first-child { border-left: none; }

/* 模块标识列（更紧凑）*/
.curriculum-module {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.curriculum-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.curriculum-icon-ai  { background: #FDECEA; color: #BC1F1A; }
.curriculum-icon-ip  { background: #E6EEFB; color: #2563EB; }
.curriculum-icon-geo { background: #DDFAEE; color: #059669; }

.curriculum-label {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
  line-height: 1;
}
.curriculum-label-ai  { color: #BC1F1A; }
.curriculum-label-ip  { color: #2563EB; }
.curriculum-label-geo { color: #059669; }

.curriculum-sublabel {
  font-size: 11.5px;
  color: var(--ink-4);
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 6px;
}
.curriculum-sublabel::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 24px; height: 1px;
}
.curriculum-sublabel-ai::after  { background: #BC1F1A; }
.curriculum-sublabel-ip::after  { background: #2563EB; }
.curriculum-sublabel-geo::after { background: #059669; }

/* 进度提示（实战篇右上角）*/
.curriculum-progress {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: ui-monospace, 'SF Mono', monospace;
  color: var(--ink-4);
  background: var(--line-2);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}
.curriculum-progress strong { font-weight: 600; color: var(--ink-2); }
.curriculum-progress.is-complete { background: var(--brand); color: #fff; }
.curriculum-progress.is-complete strong { color: #fff; }
.curriculum-progress.is-complete::after {
  content: "· 全部完成";
  margin-left: 4px;
  letter-spacing: 0.06em;
}

/* 列表 · 可点击 checkbox 风格 */
.curriculum-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.curriculum-list li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.5;
  cursor: pointer;
  user-select: none;
  transition: color .15s;
}
.curriculum-list li:hover { color: var(--ink); }
.curriculum-list li:hover::before { border-color: var(--ink-3); }
.curriculum-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 14px; height: 14px;
  border: 1.5px solid var(--line-2);
  border-radius: 4px;
  background: white;
  transition: all .15s;
}
/* 打勾的 ✓ */
.curriculum-list li::after {
  content: "";
  position: absolute;
  left: 4px; top: 13px;
  width: 6px; height: 3px;
  border-left: 1.6px solid #fff;
  border-bottom: 1.6px solid #fff;
  transform: rotate(-45deg);
  opacity: 0;
  transition: opacity .15s;
}
.curriculum-list li.is-done { color: var(--ink-4); }
.curriculum-list li.is-done::after { opacity: 1; }

/* 按模块上色 */
.curriculum-row[data-module="ai"]  li.is-done::before { background: #BC1F1A; border-color: #BC1F1A; }
.curriculum-row[data-module="ip"]  li.is-done::before { background: #2563EB; border-color: #2563EB; }
.curriculum-row[data-module="geo"] li.is-done::before { background: #059669; border-color: #059669; }

/* 实战篇 3 列布局 */
.curriculum-list-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0 24px;
}

@media (max-width: 1024px) {
  .curriculum-row { grid-template-columns: 150px 1fr 2fr; }
  .curriculum-row:not(.curriculum-header) > div { padding: 18px 18px; }
  .curriculum-icon { width: 40px; height: 40px; font-size: 12px; }
  .curriculum-label { font-size: 22px; }
  .curriculum-list-grid { grid-template-columns: 1fr 1fr; gap: 0 16px; }
}
@media (max-width: 768px) {
  .curriculum-row { grid-template-columns: 1fr; }
  .curriculum-header { display: none; }
  .curriculum-row:not(.curriculum-header) > div {
    padding: 18px;
    border-left: none;
    border-top: 1px solid var(--line);
  }
  .curriculum-row:not(.curriculum-header) > div:first-child { border-top: none; }
  .curriculum-module { flex-direction: row; align-items: center; gap: 14px; }
  .curriculum-list-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   视频反馈卡 video-card
   ============================================================ */
.video-card {
  position: relative;
  background: var(--ink);
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 16/9;
  cursor: pointer;
  transition: transform .35s cubic-bezier(.16,1,.3,1),
              box-shadow .35s;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 56px -24px rgba(188,31,26,.4);
}
.video-card-thumb {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.16,1,.3,1), filter .3s;
  z-index: 0;
}
.video-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.1) 0%, transparent 40%, rgba(0,0,0,.75) 100%);
  z-index: 1;
  pointer-events: none;
}
.video-card:hover .video-card-thumb {
  transform: scale(1.06);
  filter: brightness(.85);
}

/* 中间圆形播放按钮 */
.video-card-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  pointer-events: none;
}
.video-card-play::before {
  content: "";
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255,255,255,.95);
  box-shadow: 0 12px 28px -8px rgba(0,0,0,.5),
              0 0 0 4px rgba(255,255,255,.15);
  transition: transform .35s cubic-bezier(.16,1,.3,1), background .25s;
}
.video-card-play::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  border-left: 22px solid var(--brand);
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  margin-left: 6px;
  transition: border-left-color .25s;
}
.video-card:hover .video-card-play::before {
  transform: scale(1.12);
  background: var(--brand);
}
.video-card:hover .video-card-play::after {
  border-left-color: white;
}

/* 底部 metadata 条 */
.video-card-meta {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  padding: 18px 22px;
  color: white;
}
.video-card-duration {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(8px);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.9);
}

@media (max-width: 768px) {
  .video-card-play::before { width: 56px; height: 56px; }
  .video-card-play::after {
    border-left-width: 16px;
    border-top-width: 10px;
    border-bottom-width: 10px;
    margin-left: 4px;
  }
  .video-card-meta { padding: 14px 16px; }
}

/* ============================================================
   助教卡片 ta-card · 紧凑型，4 列网格容纳 20 人
   ============================================================ */
.ta-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
  position: relative;
}
.ta-card:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -16px rgba(188,31,26,.25);
}
.ta-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FDF3F2 0%, #F9E6E4 100%);
  border: 1px solid var(--brand-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--brand);
  flex-shrink: 0;
  transition: background .35s, color .35s, border-color .25s;
}
.ta-card:hover .ta-avatar {
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  color: white;
  border-color: var(--brand);
}
.ta-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.ta-name {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.ta-tag {
  font-size: 11.5px;
  color: var(--ink-4);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  letter-spacing: 0.04em;
}

/* ============================================================
   讲师卡片 v2 · 杂志风（大照片 + 红色巨型编号 + 信息层）
   ============================================================ */
/* ============================================================
   讲师卡 v9 · 纵版 · 必火品牌红顶 + 核心标签竖排
   ============================================================ */
.faculty-card {
  background: linear-gradient(180deg,
    #BC1F1A 0%,
    #BC1F1A 14%,
    rgba(188,31,26,0.22) 32%,
    rgba(188,31,26,0.06) 50%,
    #FFFFFF 68%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-align: center;
  transition: transform .3s cubic-bezier(.16,1,.3,1), box-shadow .35s;
}
.faculty-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 40px -22px rgba(188,31,26,.35);
}

/* 头像 · edge-to-edge 填满顶部 */
.faculty-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 0;
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  border: 0;
  box-shadow: none;
}
.faculty-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.16,1,.3,1);
}
.faculty-card:hover .faculty-photo img { transform: scale(1.04); }

/* 头像下渐隐过渡 · 让照片下沿自然衔接信息区 */
.faculty-photo::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 28%;
  background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.0) 50%, rgba(255,255,255,0.55) 100%);
  pointer-events: none;
}

/* 信息层 */
.faculty-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  align-items: center;
  text-align: center;
  padding: 18px 16px 20px;
  width: 100%;
  background: #fff;
}
.faculty-name {
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--brand);
}
.faculty-title {
  font-size: 14px;
  color: var(--ink);
  margin-top: 8px;
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: -0.005em;
}
.faculty-bio {
  font-size: 11.5px;
  color: var(--ink-2);
  margin-top: 8px;
  line-height: 1.65;
}

/* 核心标签 · 单行排列 */
.faculty-modules {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  justify-content: center;
  width: 100%;
}
.faculty-mod-chip {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  background: rgba(0,0,0,0.04);
  color: var(--ink-2);
  transition: background .25s, color .25s;
}
.faculty-card:hover .faculty-mod-chip {
  background: rgba(188,31,26,0.08);
  color: var(--brand-deep);
}

@media (max-width: 640px) {
  .faculty-name { font-size: 19px; }
  .faculty-mod-chip { font-size: 10.5px; }
}

/* 待公布占位卡 */
.faculty-card.is-placeholder { opacity: 0.55; }
.faculty-card.is-placeholder .faculty-photo {
  background: linear-gradient(135deg, var(--paper) 0%, #ECEAE4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.faculty-card.is-placeholder .faculty-photo::before {
  content: "+";
  font-family: 'Space Grotesk', sans-serif;
  font-size: 38px;
  font-weight: 300;
  color: var(--ink-4);
  opacity: 0.5;
}
.faculty-card.is-placeholder .faculty-name { color: var(--ink-3); }

/* 槽位填充后：背景图模式 */
.faculty-photo[style*="background-image"] {
  background-size: cover !important;
  background-position: center !important;
}
.ta-circle-avatar[style*="background-image"] {
  background-size: cover !important;
  background-position: center !important;
  color: transparent !important;
}

@media (max-width: 640px) {
  .faculty-card {
    grid-template-columns: 96px 1fr;
    padding: 14px 16px 14px 14px;
    gap: 14px;
  }
  .faculty-name { font-size: 18px; }
  .faculty-number { font-size: 12px; top: 12px; right: 16px; }
}

/* ============================================================
   助教卡片 v2 · 圆头像 + 名字 + hover 信息浮现
   ============================================================ */
.ta-circle-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 22px 14px 18px;
  border-radius: 16px;
  background: white;
  border: 1px solid var(--line);
  transition: border-color .3s, transform .35s cubic-bezier(.16,1,.3,1), box-shadow .35s;
  position: relative;
  overflow: hidden;
}
.ta-circle-card:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: 0 18px 32px -16px rgba(188,31,26,.28);
}
.ta-circle-avatar {
  position: relative;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FDF3F2 0%, #F9E6E4 100%);
  border: 2px solid var(--brand-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: 32px;
  color: var(--brand);
  letter-spacing: -0.02em;
  transition: all .4s cubic-bezier(.16,1,.3,1);
  margin-bottom: 8px;
}
@media (max-width: 640px) {
  .ta-circle-avatar { width: 80px; height: 80px; font-size: 28px; }
}
.ta-circle-card:hover .ta-circle-avatar {
  background: linear-gradient(135deg, #BC1F1A 0%, #8E1612 100%);
  color: white;
  border-color: var(--brand);
  transform: scale(1.05);
  box-shadow: 0 10px 24px -8px rgba(188,31,26,.5);
}
.ta-circle-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-align: center;
  letter-spacing: -0.005em;
  margin-top: 2px;
}
.ta-circle-meta {
  font-size: 10.5px;
  color: var(--ink-4);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-align: center;
}
/* 助教卡 · 城市标签（红色小圆点） */
.ta-circle-meta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.ta-circle-meta::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.6;
}

/* 助教身份（纯文字，无形状）*/
.ta-circle-role {
  font-size: 10px;
  color: var(--ink-4);
  margin-top: 4px;
  letter-spacing: 0.05em;
  text-align: center;
}

/* Hero 动画门：默认暂停，等 splash 消失后由 JS 加 is-hero-ready 才开始播 */
.hero-bg.is-animated,
.hero-sweep,
.hero-scrim.is-pulse,
.hero-title-animated .char {
  animation-play-state: paused;
}
body.is-hero-ready .hero-bg.is-animated,
body.is-hero-ready .hero-sweep,
body.is-hero-ready .hero-scrim.is-pulse,
body.is-hero-ready .hero-title-animated .char {
  animation-play-state: running;
}

/* 尊重 prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .hero-bg.is-animated,
  .hero-sweep,
  .hero-scrim.is-pulse,
  .dot-pulse::after {
    animation: none !important;
  }
  .hero-title-animated .char {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    animation: none !important;
  }
}

/* hairline 修饰 */
.hairline { background: var(--line); height: 1px; width: 100%; }

/* footer */
.footer-link { color: var(--ink-3); font-size: 14px; transition: color .2s; }
.footer-link:hover { color: var(--brand); }

/* ============================================================
   开屏动画 SPLASH v2 · 3.3s · 红色科技 / 系统启动
   ============================================================ */
.splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: radial-gradient(ellipse at center, #1a0707 0%, #0a0505 55%, #050202 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  animation: splashExit .8s cubic-bezier(.76,0,.24,1) 2.7s forwards;
}
.splash::before {
  /* 暗角增强中心聚焦 */
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at center, transparent 30%, rgba(0,0,0,.6) 100%);
  z-index: 1;
  pointer-events: none;
}

/* 网格层 */
.splash-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(188,31,26,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(188,31,26,.10) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 60% 50% at center, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at center, black 0%, transparent 75%);
  opacity: 0;
  animation: splashGridIn 1.4s cubic-bezier(.16,1,.3,1) .15s forwards;
  z-index: 0;
}

/* 横向扫描光带 */
.splash-scan {
  position: absolute;
  left: 0; right: 0;
  height: 240px;
  top: -240px;
  background:
    linear-gradient(180deg,
      transparent 0%,
      rgba(188,31,26,.08) 35%,
      rgba(188,31,26,.28) 50%,
      rgba(188,31,26,.08) 65%,
      transparent 100%);
  z-index: 1;
  animation: splashScan 2.4s cubic-bezier(.7,0,.3,1) .35s forwards;
  pointer-events: none;
}
@keyframes splashScan {
  0%   { top: -240px; opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* 四角科幻边框 */
.splash-corner {
  position: absolute;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--brand);
  box-shadow: 0 0 12px rgba(188,31,26,.5);
  opacity: 0;
  transform: scale(.5);
  animation: splashCornerIn .6s cubic-bezier(.16,1,.3,1) .25s forwards;
  z-index: 2;
}
.splash-corner-tl { top: 32px; left: 32px; border-right: none; border-bottom: none; }
.splash-corner-tr { top: 32px; right: 32px; border-left: none; border-bottom: none; }
.splash-corner-bl { bottom: 32px; left: 32px; border-right: none; border-top: none; }
.splash-corner-br { bottom: 32px; right: 32px; border-left: none; border-top: none; }
@keyframes splashCornerIn {
  to { opacity: 1; transform: scale(1); }
}

/* 中央舞台 · logo 在上、标语在下 */
.splash-stage {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(32px, 4vw, 56px);
}

/* Logo 包裹 */
.splash-logo-wrap {
  position: relative;
  width: clamp(140px, 18vw, 220px);
  height: clamp(140px, 18vw, 220px);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 同心脉冲圆环 · 无限循环 */
.splash-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--brand);
  opacity: 0;
  animation: splashPulse 2.6s ease-out 1s infinite;
  pointer-events: none;
}
.splash-pulse-2 { animation-delay: 1.85s; }
.splash-pulse-3 { animation-delay: 2.7s; }
@keyframes splashPulse {
  0%   { transform: scale(.65); opacity: 0; border-width: 2px; }
  25%  { opacity: .9; }
  100% { transform: scale(2.6); opacity: 0; border-width: .3px; }
}

/* Logo 入场 · 散焦放大 + 短暂红色泛光 */
.splash-logo-img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 1;
  opacity: 0;
  transform: scale(.4) rotate(-8deg);
  filter: blur(16px) drop-shadow(0 0 0 transparent);
  animation: splashLogoIn 1.1s cubic-bezier(.16,1,.3,1) .45s forwards,
             splashLogoBreath 3.5s ease-in-out 1.6s infinite;
}
@keyframes splashLogoIn {
  0% {
    opacity: 0;
    transform: scale(.4) rotate(-8deg);
    filter: blur(16px) drop-shadow(0 0 0 transparent);
  }
  55% {
    filter: blur(0) drop-shadow(0 0 42px rgba(188,31,26,.9));
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(0);
    filter: blur(0) drop-shadow(0 0 24px rgba(188,31,26,.55));
  }
}
@keyframes splashLogoBreath {
  0%, 100% { filter: blur(0) drop-shadow(0 0 24px rgba(188,31,26,.55)); }
  50%      { filter: blur(0) drop-shadow(0 0 36px rgba(188,31,26,.85)); }
}

/* 标语 */
.splash-slogan {
  text-align: center;
  font-family: 'Space Grotesk', 'PingFang SC', -apple-system, sans-serif;
  font-weight: 700;
  font-size: clamp(22px, 3.8vw, 40px);
  color: white;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  gap: 10px;
  line-height: 1.15;
  text-shadow: 0 0 18px rgba(255,255,255,.08);
}
.splash-line {
  display: block;
  opacity: 0;
  animation: splashLineFade .35s ease-out forwards;
}
.splash-line:nth-child(1) { animation-delay: 1.05s; }
.splash-line:nth-child(2) { animation-delay: 1.45s; }
@keyframes splashLineFade {
  to { opacity: 1; }
}
.splash-char {
  display: inline-block;
  min-width: 0.5em;
  text-align: center;
  font-variant-numeric: tabular-nums;
  transition: color .2s, text-shadow .2s;
}
.splash-char.splash-brand {
  color: var(--brand);
  text-shadow: 0 0 14px rgba(188,31,26,.7);
}
.splash-char.is-scrambling {
  color: rgba(255,255,255,.4);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

/* 底部状态条 */
.splash-bottom {
  position: absolute;
  bottom: 72px;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(260px, 32vw, 400px);
  z-index: 3;
  opacity: 0;
  animation: splashLineFade .5s ease-out 1.95s forwards;
}
.splash-progress-track {
  position: relative;
  height: 1px;
  background: rgba(255,255,255,.08);
  border-radius: 999px;
  overflow: hidden;
}
.splash-progress-bar {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 0%;
  background: linear-gradient(90deg,
    rgba(188,31,26,.2) 0%,
    var(--brand) 50%,
    rgba(188,31,26,.2) 100%);
  border-radius: 999px;
  box-shadow: 0 0 14px rgba(188,31,26,.8),
              0 0 28px rgba(188,31,26,.4);
  animation: splashProgress .9s cubic-bezier(.65,0,.35,1) 2.05s forwards;
}
@keyframes splashProgress {
  to { width: 100%; }
}
.splash-meta {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: rgba(255,255,255,.45);
}
.splash-meta-tracking { color: var(--brand); text-shadow: 0 0 8px rgba(188,31,26,.5); }
.splash-percent { color: white; font-weight: 600; }

/* 退出：快门 clip-path 上下分裂 */
@keyframes splashGridIn { to { opacity: 1; } }
@keyframes splashExit {
  0% {
    clip-path: inset(0% 0% 0% 0%);
    opacity: 1;
  }
  100% {
    clip-path: inset(50% 0% 50% 0%);
    opacity: 0;
  }
}
.splash.is-done { display: none !important; }
body.splash-active { overflow: hidden; height: 100vh; }

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
  .splash,
  .splash *,
  .splash::before {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
  .splash {
    animation: splashExit .3s ease-out 1.5s forwards !important;
  }
}

/* ============================================================
   iPhone SE / 极小屏 (≤480px) 系统级适配
   补齐 640px 断点不到的视觉盲点
   ============================================================ */
@media (max-width: 480px) {
  /* 内容容器 padding 收窄 */
  .container-x {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* nav 高度收窄，给内容更多空间 */
  header.nav .container-x { height: 60px; }

  /* 按钮在极小屏自适应 */
  .btn { padding: 12px 20px; font-size: 13.5px; }
  .btn-cta-small, .btn-cta-assessment {
    padding: 7px 12px;
    font-size: 12px;
  }

  /* page-hero 角标缩小 */
  .page-hero { min-height: 40vh; padding: 56px 0 36px; }
  .page-hero-corner { width: 16px; height: 16px; }
  .page-hero-corner-tl { top: 14px; left: 14px; }
  .page-hero-corner-br { bottom: 14px; right: 14px; }

  /* hero 底部 dots / 箭头位置 */
  .hero-bg-dots { bottom: 70px; gap: 8px; }
  .hero-bg-dot { width: 18px; height: 3px; }
  .hero-bg-dot.is-active { width: 28px; }

  /* 防止任何元素横向溢出导致整页可横滑 */
  body { overflow-x: hidden; }

  /* 通用图片自适应 */
  img { max-width: 100%; height: auto; }
}