:root {
  --bg: #F7F7F5;
  --card: #FFFFFF;
  --ink: #111111;
  --ink-2: #6B6B6B;
  --ink-3: #9A9A9A;
  --accent: #FF5C1A;
  --border: #EBEBE9;
  --border-light: #F2F2F0;
  --radius-lg: 24px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== 可访问性 ===== */
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  transition: top .2s;
}

.skip-link:focus {
  top: 16px;
}

/* 全局焦点指示器 */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ===== 导航栏 ===== */
.navbar-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 24px 120px;
  background: var(--bg);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 8px 12px;
  transition: color .2s;
}

.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); font-weight: 600; }

.nav-cta {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  padding: 10px 22px;
  border-radius: 999px;
  flex-shrink: 0;
  transition: opacity .2s;
}

.nav-cta:hover { opacity: .88; }

/* ===== 通用 Section ===== */
.section {
  max-width: 1440px;
  margin: 0 auto;
  padding: 60px 120px 80px;
}

.section-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
  background: rgba(255, 92, 26, 0.08);
  border: 1px solid rgba(255, 92, 26, 0.16);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 20px;
}

.section-label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.section-title {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-intro {
  font-size: 17px;
  line-height: 1.75;
  color: #5A5A5A;
  max-width: 560px;
  margin-bottom: 12px;
}

/* ===== 首页 Hero ===== */
.home { padding-top: 40px; }

.hero-row {
  display: flex;
  align-items: stretch;
  gap: 24px;
}

.avatar-card {
  flex: 0 0 340px;
  height: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.avatar {
  width: 100%;
  height: 300px;
  border-radius: 16px;
  overflow: hidden;
  background: #EDEAE4;
  flex-shrink: 0;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.avatar-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.avatar-name { font-size: 24px; font-weight: 700; }
.avatar-role { font-size: 15px; font-weight: 500; color: var(--ink-2); }

.hero-card {
  flex: 1;
  height: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
}

.hero-title {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.hero-accent {
  color: var(--accent);
}

.hero-desc {
  font-size: 18px;
  color: var(--ink-2);
  line-height: 1.7;
  max-width: 620px;
}

/* ===== 关于我 ===== */

/* 个人 ID 卡片 */
.id-card {
  display: flex;
  align-items: stretch;
  gap: 32px;
  max-width: 560px;
  margin: 0 auto 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.id-photo {
  flex: 0 0 160px;
  width: 160px;
  height: 200px;
  border-radius: 16px;
  overflow: hidden;
  background: var(--border-light);
}

.id-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.id-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.id-name {
  font-size: 26px;
  font-weight: 700;
}

.id-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.id-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.id-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.id-key {
  flex: 0 0 72px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-3);
}

.id-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

/* 数字亮点 */
.stats {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.stat {
  flex: 1;
  max-width: 240px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.stat-num {
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
}

/* 时间线（单列纵向） */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 0 8px 32px;
}

/* 左侧贯穿竖线 */
.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--border);
  border-radius: 2px;
}

.exp-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
}

/* 时间节点圆点（置于左侧竖线上） */
.exp-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--border);
  z-index: 1;
  transition: border-color .25s, background .25s;
}

.exp-item.current::before {
  background: var(--accent);
  border-color: var(--accent);
}

.exp-item:hover::before {
  border-color: var(--accent);
}

.exp-item.current:hover::before {
  background: var(--accent);
  border-color: var(--accent);
}

.exp-year {
  flex: 0 0 76px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  text-align: center;
  white-space: nowrap;
}

.exp-year-current {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.exp-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform .3s cubic-bezier(.2, .7, .3, 1);
  transform-origin: left center;
}

.exp-item:hover .exp-body {
  transform: translateX(4px);
}

.exp-title { font-size: 19px; font-weight: 700; }
.exp-desc { font-size: 15px; color: var(--ink-2); line-height: 1.6; }

/* 理念引用 */
.quote {
  max-width: 720px;
  margin: 48px auto 0;
  text-align: center;
  padding: 32px 40px;
  border-left: none;
  border-top: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
}

.quote p {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.quote footer {
  margin-top: 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
}

/* 精选成果 */
.featured {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 48px;
}

.featured-card {
  flex: 1;
  max-width: 320px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(17,17,17,.08);
  border-color: var(--accent);
}

.featured-name {
  font-size: 18px;
  font-weight: 700;
}

.featured-desc {
  font-size: 14px;
  color: var(--ink-2);
}

.featured-arrow {
  font-size: 20px;
  color: var(--accent);
  flex-shrink: 0;
}



/* ===== 视频 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 280px);
  justify-content: center;
  gap: 24px;
}

.video-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  transition: transform .25s, box-shadow .25s;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(17,17,17,.08);
}

.video-thumb {
  position: relative;
  width: 240px;
  height: 320px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  background: #EFEFED;
}

.video-thumb.ph {
  background: #EFEFED;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
}

.ph-plus {
  color: #C9C9C9;
  font-size: 24px;
  box-shadow: none;
  background: #fff;
}

.video-title {
  font-size: 18px;
  font-weight: 700;
  width: 100%;
  text-align: left;
  line-height: 1.4;
  min-height: 50px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  font-size: 14px;
  color: var(--ink-3);
  width: 100%;
  text-align: left;
  margin-top: auto;
}

.video-card.placeholder .video-title { color: var(--ink-3); }
.video-card.placeholder .video-meta { color: #C9C9C9; }

/* ===== 产品 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform .25s, box-shadow .25s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(17,17,17,.08);
}

.product-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.product-title { font-size: 22px; font-weight: 700; }

.product-tag {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-3);
  white-space: nowrap;
}

.product-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: var(--border-light);
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ===== 联系我 ===== */
.social-grid {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 16px;
}

.social-card {
  flex: 1 1 0;
  min-width: 0;
  max-width: 260px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  transition: transform .25s, box-shadow .25s;
}

.social-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(17,17,17,.08);
}

.social-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
}

.social-name { font-size: 16px; font-weight: 700; }
.social-handle { font-size: 13px; color: var(--ink-2); }

/* ===== 页脚 ===== */
.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 120px;
  border-top: 1px solid var(--border-light);
}

.footer-text { font-size: 14px; font-weight: 500; color: var(--ink-3); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .navbar-wrap { padding: 20px 40px; }
  .section { padding: 48px 40px 64px; }
  .footer { padding: 32px 40px; }
  .hero-title { font-size: 40px; }
  .section-title { font-size: 40px; }
  .product-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .navbar-wrap { padding: 16px 20px; }
  .navbar { padding: 10px 16px; }
  .brand-text { font-size: 18px; }
  .nav-links { gap: 16px; }
  .nav-link { font-size: 14px; }
  .nav-cta { padding: 8px 16px; font-size: 14px; }
  .section { padding: 40px 20px 56px; }
  .footer { padding: 28px 20px; }
  .hero-row { flex-direction: column; }
  .avatar-card { flex: 1; height: auto; }
  .avatar { aspect-ratio: 1 / 1; height: auto; }
  .hero-card { height: auto; padding: 32px 24px; }
  .hero-title { font-size: 30px; }
  .hero-desc { font-size: 16px; }
  .section-title { font-size: 30px; }
  .id-card { flex-direction: column; align-items: center; gap: 20px; }
  .id-photo { flex: none; width: 200px; height: 250px; }
  .id-info { width: 100%; }
  .id-name { text-align: center; }
  /* 时间线移动端 */
  .timeline { max-width: 100%; padding-left: 24px; }
  .timeline::before { left: 6px; }
  .exp-item { gap: 14px; padding: 16px 0; }
  .exp-item::before { left: -22px; }
  .exp-year { flex: 0 0 68px; font-size: 13px; }
  .stats { flex-direction: column; align-items: center; }
  .stat { width: 100%; max-width: 320px; }
  .featured { flex-direction: column; align-items: center; }
  .featured-card { width: 100%; max-width: 320px; }
  .quote { padding: 28px 24px; }
  .quote p { font-size: 20px; }
  .video-grid { grid-template-columns: 1fr; max-width: 320px; margin: 0 auto; }
  .social-card { flex: 1 1 100%; max-width: 320px; }
  .social-grid { flex-wrap: wrap; }
  .social-card { flex: 1 1 calc(50% - 8px); max-width: none; }
}

/* 首屏互动与个人技能滚动条 */
.hero-card { height: auto; min-height: 420px; min-width: 0; gap: 22px; }
.hero-row .avatar-card { height: auto; min-height: 420px; }
.eye-greeting { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; }
.eye-follow-button { display: inline-flex; align-items: center; gap: 20px; padding: 7px 7px 7px 22px; border: 0; border-radius: 999px; background: #111; color: #fff; font: 600 15px var(--font-sans); cursor: pointer; box-shadow: 0 6px 12px #11111120; transition: transform .2s, box-shadow .2s; -webkit-tap-highlight-color: transparent; }
.eye-follow-button:hover { transform: translateY(-2px); box-shadow: 0 9px 18px #11111128; }
.eye-follow-button:active { transform: scale(.97); }
.button-eyes { display: flex; gap: 4px; }
.button-eye { display: grid; place-items: center; width: 36px; height: 36px; background: #fff; border-radius: 50%; overflow: hidden; }
.eye-pupil { width: 11px; height: 11px; border-radius: 50%; background: #111; transform: translate(var(--look-x, 0px), var(--look-y, 0px)); transition: transform .12s ease-out; }
.greeting-message { font-size: 13px; color: var(--ink-2); }
.is-blinking .button-eye { animation: eye-blink .42s ease-in-out; }
.is-blinking .button-eye:last-child { animation-delay: .035s; }
@keyframes eye-blink { 0%, 100% { transform: scaleY(1); } 40%, 55% { transform: scaleY(.12); } }
@media (prefers-reduced-motion: reduce) {
  .eye-follow-button:hover, .eye-follow-button:active { transform: none; }
  .is-blinking .button-eye { animation: none; }
  .eye-pupil { transition: none; }
}
.skill-ribbon { margin-top: 44px; min-width: 0; }
.skill-marquee { display: flex; overflow: hidden; padding: 16px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); mask-image: linear-gradient(to right, transparent, #000 5%, #000 95%, transparent); }
.skill-track { display: flex; flex-shrink: 0; align-items: center; list-style: none; gap: 56px; padding-right: 56px; }
.skill-track li { display: flex; align-items: center; gap: 12px; white-space: nowrap; font-size: 22px; font-weight: 600; color: #555551; letter-spacing: -.02em; }
.skill-track li > span { color: var(--accent); font-size: 25px; font-weight: 500; }
.is-ready .skill-track { animation: skills-scroll 38s linear infinite; }
.skill-ribbon:hover .skill-track, .skill-ribbon:focus-within .skill-track, .skill-ribbon.is-paused .skill-track { animation-play-state: paused; }
@keyframes skills-scroll { to { transform: translateX(-100%); } }
@media (min-width: 721px) and (max-width: 1200px) {
  .hero-row .avatar-card { flex-basis: 260px; }
  .hero-card { padding: 32px; }
  .hero-title { font-size: 36px; }
}
@media (max-width: 720px) {
  .hero-row .avatar-card { min-height: 0; }
  .hero-card { min-height: 0; }
  .skill-ribbon { margin-top: 32px; }
  .skill-track { gap: 32px; padding-right: 32px; }
  .skill-track li { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) {
  .is-ready .skill-track { animation: none; flex-wrap: wrap; flex-shrink: 1; padding-right: 0; gap: 20px 28px; }
  .skill-marquee { mask-image: none; }
  .skill-track[aria-hidden="true"] { display: none; }
}

/* 窄屏保留全部导航入口，避免首屏被横向撑开。 */
@media (max-width: 540px) {
  .navbar { flex-wrap: wrap; gap: 8px 12px; border-radius: 24px; }
  .nav-links { order: 3; width: 100%; justify-content: space-between; gap: 0; }
  .nav-link { padding: 6px 8px; }
}
@media (min-width: 721px) and (max-width: 1399px) {
  .video-grid { grid-template-columns: repeat(2, minmax(0, 280px)); }
}

/* 个人履历：左侧时间线，右侧个人通行证 */
.about { scroll-margin-top: 120px; }
.about-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; align-items: start; gap: 64px; }
.about-journey { min-width: 0; }
.journey-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-bottom: 24px; margin-bottom: 8px; border-bottom: 1px solid var(--border); }
.journey-heading h3 { font-size: 18px; font-weight: 600; }
.journey-heading > span { color: var(--ink-2); font-size: 13px; }
.about .timeline { padding: 0 0 0 24px; margin: 0; max-width: none; }
.about .timeline::before { left: 5px; top: 34px; bottom: 44px; width: 1px; background: #DEDEDA; }
.about .exp-item { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 20px; padding: 24px 0; }
.about .exp-item::before { left: -23px; top: 32px; width: 9px; height: 9px; background: var(--bg); border-color: #C5C5BF; }
.about .exp-item.current::before { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 5px #FF5C1A12; }
.about .exp-year { padding: 2px 0 0; border: 0; border-radius: 0; background: transparent; font-size: 13px; font-weight: 500; color: var(--ink-2); text-align: left; }
.about .exp-year-current { color: var(--accent); }
.about .exp-body { padding-bottom: 23px; border-bottom: 1px solid var(--border); }
.about .exp-item:last-child .exp-body { border: 0; padding-bottom: 0; }
.about .exp-title { font-size: 18px; font-weight: 600; line-height: 1.55; }
.about .exp-desc { font-size: 14px; line-height: 1.85; }
.about-sidebar { position: sticky; top: 120px; min-width: 0; }
.about .id-card { display: block; max-width: none; margin: 0; padding: 22px; border-radius: 22px; box-shadow: 0 12px 32px #11111105; }
.id-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; color: var(--ink-2); font-size: 11px; font-weight: 600; letter-spacing: .2em; }
.id-card-top > span:last-child { color: var(--accent); font-size: 30px; line-height: 1; }
.about .id-photo { width: 100%; height: 230px; border-radius: 12px; transform: rotate(-2deg); border: 5px solid #fff; box-shadow: 0 3px 12px #11111112; }
.about .id-photo img { object-position: center 40%; }
.about .id-info { display: block; margin-top: 24px; }
.id-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.about .id-name { font-size: 32px; text-align: left; }
.id-role { color: var(--accent); background: #FF5C1A0D; border-radius: 6px; padding: 5px 10px; font-size: 12px; }
.about .id-row { justify-content: space-between; padding: 0; border: 0; gap: 12px; }
.about .id-key { font-size: 13px; color: var(--ink-2); }
.about .id-value { font-size: 13px; font-weight: 500; text-align: right; }
.id-ticket-divider { position: relative; margin: 26px -22px 22px; border-top: 1px dashed #DADAD5; }
.id-ticket-divider::before, .id-ticket-divider::after { content: ""; position: absolute; top: -9px; width: 16px; height: 16px; border: 1px solid var(--border); border-radius: 50%; background: var(--bg); }
.id-ticket-divider::before { left: -9px; }
.id-ticket-divider::after { right: -9px; }
.about .stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 0; }
.about .stat { border: 0; border-radius: 0; padding: 0; width: auto; gap: 6px; background: transparent; }
.about .stat + .stat { border-left: 1px solid var(--border); }
.about .stat-num { font-size: 30px; font-weight: 600; }
.about .stat-label { font-size: 10px; }
.id-card-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border-light); font-size: 11px; color: var(--ink-2); letter-spacing: .08em; }
.id-card-bottom > span:last-child { color: var(--accent); font-size: 20px; }
.about .quote { margin: 24px 0 0; padding: 0 22px; border: 0; border-left: 2px solid var(--accent); text-align: left; }
.about .quote p { font-size: 18px; font-weight: 500; line-height: 1.65; }
.about .quote footer { margin-top: 8px; color: var(--ink-2); font-size: 12px; }
.about .featured { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.about .featured-card { max-width: none; }
@media (min-width: 901px) and (max-width: 1200px) {
  .about-layout { grid-template-columns: minmax(0, 1fr) 310px; gap: 32px; }
  .about .exp-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 900px) {
  .about-layout { grid-template-columns: 1fr; gap: 40px; }
  .about-sidebar { position: static; width: 100%; max-width: 420px; justify-self: center; }
  .about .featured { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .about { scroll-margin-top: 140px; }
  .about .exp-item { grid-template-columns: 1fr; gap: 8px; padding: 18px 0; }
  .about .exp-item::before { top: 25px; }
  .about .timeline::before { top: 27px; }
  .about .exp-title { font-size: 17px; }
  .about .featured-card { flex-wrap: wrap; gap: 8px 12px; padding: 20px; }
  .about .featured-desc { order: 3; flex-basis: 100%; }
  .about .featured-arrow { margin-left: auto; }
}
@media (min-width: 901px) and (max-height: 850px) {
  .about-sidebar { position: static; }
}

.about .stat-num small { margin-left: 3px; font-size: 11px; font-weight: 400; }

.skill-marquee:focus-visible { outline-offset: 5px; }

/* 六个成长节点直接呈现，无展开或内部滚动。 */
.about .growth-timeline { padding-left: 24px; }
.about .growth-timeline::before { display: none; }
.about .growth-timeline .exp-item { grid-template-columns: 104px minmax(0, 1fr); gap: 18px; padding: 16px 0; }
.about .growth-timeline .exp-item::before { top: 24px; }
.about .growth-timeline .exp-item:not(:last-child)::after { content: ""; position: absolute; left: -19px; top: 33px; bottom: -24px; width: 1px; background: #DEDEDA; }
.about .growth-timeline .exp-year { font-size: 12px; }
.about .growth-timeline .exp-body { padding-bottom: 16px; }
.about .growth-timeline .exp-item:last-child .exp-body { padding-bottom: 0; }
.about .growth-timeline .exp-item.current .exp-title { color: var(--accent); }
@media (max-width: 540px), (min-width: 901px) and (max-width: 1200px) {
  .about .growth-timeline .exp-item { grid-template-columns: 1fr; gap: 6px; }
}

/* 产品宣传图保持完整，不裁切图内文案。 */
.product-img { aspect-ratio: 4 / 3; background: #fff; }
.product-img img { object-fit: contain; }

/* 个人收藏卡：暖色卡面、拍立得与独立经历票根。 */
.about .id-card { position: relative; isolation: isolate; padding: 24px 22px 0; border: 1px solid #E9D8CB; border-radius: 24px; background: linear-gradient(155deg, #FFE1C7 0%, #FFF3E8 36%, #FFFCF8 66%); box-shadow: 0 18px 40px #65412112, 0 3px 8px #65412108; }
.about .id-card::before { content: ""; position: absolute; z-index: -1; inset: 7px -7px -7px 7px; background: #EFEAE3; border: 1px solid #E1DBD2; border-radius: 24px; transform: rotate(2deg); }
.about .id-card::after { content: ""; position: absolute; z-index: -1; inset: 0; border-radius: inherit; background: linear-gradient(155deg, #FFE1C7 0%, #FFF3E8 36%, #FFFCF8 66%); }
.id-card-top { margin-bottom: 22px; color: #713F26; font-size: 13px; letter-spacing: .06em; }
.id-card-top small { display: block; margin-top: 5px; color: #8A624B; font-size: 8px; letter-spacing: .17em; font-weight: 500; }
.id-card-top > .id-emblem { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid #FF5C1A55; border-radius: 50%; color: #E94D0E; font-size: 32px; transform: rotate(-12deg); }
.about .id-photo { position: relative; height: 230px; border: 0; padding: 7px 7px 30px; border-radius: 5px; background: #fff; box-shadow: 0 6px 16px #64422824; transform: rotate(-3deg); transition: transform .3s ease; }
.about .id-photo img { border-radius: 2px; }
.id-photo-caption { position: absolute; left: 12px; right: 12px; bottom: 7px; display: flex; justify-content: space-between; color: #77695F; font-size: 10px; letter-spacing: .1em; }
.id-photo-caption > span { color: var(--accent); }
.about .id-info { margin-top: 26px; }
.id-heading { margin-bottom: 20px; align-items: center; }
.about .id-name { font-size: 38px; line-height: 1.15; letter-spacing: -.03em; }
.id-name-en { display: block; margin-top: 7px; color: #9B806C; font-size: 9px; letter-spacing: .25em; }
.id-role { border: 1px solid #F1B392; border-radius: 999px; padding: 7px 12px; color: #AE400F; background: #FFF6EE; transform: rotate(4deg); }
.about .id-key { color: #8B7665; }
.about .id-value { color: #382A22; }
.about .id-list { gap: 11px; }
.id-ticket { position: relative; margin: 24px -22px 0; padding: 25px 22px 17px; background: #272724; border-radius: 0 0 23px 23px; }
.id-ticket .id-ticket-divider { position: absolute; top: 0; left: 0; right: 0; margin: 0; border-color: #AFA798; }
.id-ticket-divider::before, .id-ticket-divider::after { width: 18px; height: 18px; top: -10px; border-color: #E9D8CB; }
.about .id-ticket .stat-num { color: #FF965D; font-size: 32px; }
.about .id-ticket .stat-num small { color: #D8BCA9; }
.about .id-ticket .stat-label { color: #D5D2C9; }
.about .id-ticket .stat + .stat { border-color: #484840; }
.id-ticket .id-card-bottom { margin-top: 20px; padding-top: 14px; border-color: #484840; color: #D5D2C9; font-size: 10px; }
.id-ticket-stripes { width: 46px; height: 16px; background: repeating-linear-gradient(90deg, #D5D2C9 0 2px, transparent 2px 4px, #D5D2C9 4px 5px, transparent 5px 8px); opacity: .6; }
@media (hover: hover) and (prefers-reduced-motion: no-preference) { .id-card:hover .id-photo { transform: rotate(-1deg) translateY(-2px); } }
@media (max-width: 540px) { .about-sidebar { max-width: calc(100% - 14px); } }

/* 生活照按原始比例排版，完整保留人物与风景。 */
.about .id-card { padding-top: 18px; }
.id-card-top { margin-bottom: 16px; }
.about .id-photo { height: auto; padding: 7px 7px 0; transform: rotate(-2deg); }
.about .id-photo img { width: 100%; height: auto; object-fit: contain; aspect-ratio: 3024 / 3313; }
.id-photo-caption { position: static; min-height: 28px; padding: 6px 5px; align-items: center; }
.about .id-info { margin-top: 20px; }
.id-heading { margin-bottom: 16px; }
.about .id-list { gap: 9px; }
.id-ticket { margin-top: 20px; padding-top: 20px; padding-bottom: 14px; }
.id-ticket .id-card-bottom { margin-top: 14px; padding-top: 10px; }
/* 完整照片使卡片更高，随页面自然滚动，避免固定卡片遮住底部资料。 */
.about-sidebar { position: static; }

/* 用个人理念收尾，取消数字票根及外部重复引用。 */
.about .id-card { padding-bottom: 22px; }
.id-belief { position: relative; margin-top: 22px; padding: 20px 0 0 22px; border-top: 1px solid #E9D8CB; }
.id-belief-mark { position: absolute; top: 13px; left: 0; font-family: Georgia, serif; font-size: 36px; line-height: 1; color: var(--accent); }
.id-belief p { font-size: 16px; font-weight: 500; line-height: 1.7; color: #574332; }
.id-belief-signature { display: flex; justify-content: flex-end; align-items: center; gap: 10px; margin-top: 10px; color: #8B7665; font-size: 12px; }
.id-belief-signature > span { color: var(--accent); font-size: 18px; }

/* 精简名片信息：只保留一次姓名，以完整照片和基础资料为主。 */
.about .id-card { padding: 18px; }
.about .id-photo { padding: 6px; }
.about .id-info { margin-top: 18px; }
.about .id-name { font-size: 32px; }
.id-heading { margin-bottom: 16px; }
.id-belief { margin-top: 16px; padding-top: 14px; padding-left: 18px; }
.id-belief-mark { top: 9px; font-size: 30px; }
.id-belief p { font-size: 13px; line-height: 1.7; }

/* 时间轴悬停突出，保持文档尺寸不变。 */
.about .growth-timeline .exp-body { border-radius: 8px; transition: transform .22s ease, background-color .22s ease; }
.about .growth-timeline .exp-title { transform-origin: left center; transition: transform .22s ease, color .22s ease; }
@media (hover: hover) and (pointer: fine) {
  .about .growth-timeline .exp-item:hover .exp-body { transform: translateX(4px); background: #FF5C1A08; }
  .about .growth-timeline .exp-item:hover .exp-title { transform: scale(1.025); color: #D64910; }
  .about .growth-timeline .exp-item:hover::before { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 5px #FF5C1A12; }
}
/* 仅支持精细指针时倾斜，触屏不触发悬停动作。 */
.about .id-card { transform: perspective(1000px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)); transition: transform .22s ease-out; }
.about button.id-photo { display: block; cursor: zoom-in; font: inherit; }
.photo-open-hint { position: absolute; bottom: 14px; right: 14px; padding: 6px 10px; background: #FFFFFFEB; border-radius: 6px; color: #382A22; font-size: 11px; opacity: 0; transition: opacity .2s; pointer-events: none; }
.id-photo:hover .photo-open-hint, .id-photo:focus-visible .photo-open-hint { opacity: 1; }
.photo-modal-open { overflow: hidden; }
.photo-dialog { position: fixed; inset: 0; width: 100%; height: 100dvh; max-width: none; max-height: none; margin: 0; padding: 64px 24px 24px; border: 0; background: transparent; overflow: auto; }
.photo-dialog[open] { display: grid; place-items: center; }
.photo-dialog::backdrop { background: #111111DE; backdrop-filter: blur(6px); }
.photo-dialog-image { display: block; width: auto; height: auto; max-width: 100%; max-height: calc(100dvh - 88px); object-fit: contain; border-radius: 6px; box-shadow: 0 16px 60px #0005; }
.photo-dialog-close { position: fixed; top: 16px; right: 20px; display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid #FFFFFF66; border-radius: 50%; background: #262626; color: #fff; font: 28px/1 Arial, sans-serif; cursor: pointer; }
.photo-dialog-close:hover { background: #454545; }
@media (hover: none) { .photo-open-hint { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .about .id-card, .about .growth-timeline .exp-item:hover .exp-body, .about .growth-timeline .exp-item:hover .exp-title { transform: none; }
}