/* ==========================================================================
   基础变量与重置
   ========================================================================== */
:root {
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-text: #1b1f2a;
  --color-muted: #667085;
  --color-line: #e6e8ef;
  --color-primary: #4f46e5;
  --color-primary-soft: #eef0ff;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-md: 0 12px 32px rgba(16, 24, 40, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1080px;
  --header-height: 68px;
  --font-sans: "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

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

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   通用组件
   ========================================================================== */
.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background-color 0.2s ease,
    box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.22);
}

.btn-primary:hover {
  background-color: #4338ca;
}

.btn-ghost {
  border-color: var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-text);
}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: rgba(247, 248, 251, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--color-primary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--color-muted);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-text);
  background-color: rgba(79, 70, 229, 0.07);
}

.site-nav a.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 11px 9px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 88px) 0 96px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(
    circle,
    rgba(79, 70, 229, 0.18) 0%,
    rgba(79, 70, 229, 0) 68%
  );
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
}

.hero-desc {
  max-width: 34em;
  margin-top: 14px;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-card {
  padding: 32px 28px;
  text-align: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 96px;
  height: 96px;
  margin: 0 auto 18px;
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #22d3ee);
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.28);
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 保持比例，填满容器，不会拉伸变形 */
}

.hero-card-name {
  font-size: 1.2rem;
  font-weight: 700; 
}

.hero-card-role {
  margin-top: 4px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.hero-card-meta {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-line);
  text-align: left;
  font-size: 0.9rem;
}

.hero-card-meta li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
}

.hero-card-meta span {
  color: var(--color-muted);
}

/* ==========================================================================
   通用分区
   ========================================================================== */
.section {
  padding: 88px 0;
}

.section-alt {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.section-header {
  margin-bottom: 40px;
}

.section-header h2 {
  margin-top: 8px;
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  letter-spacing: -0.02em;
}

/* 关于 */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.about-text p + p {
  margin-top: 16px;
}

.about-text p {
  color: var(--color-muted);
}

.stats {
  display: grid;
  gap: 14px;
}

.stats li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.stats strong {
  font-size: 1.6rem;
  color: var(--color-primary);
}

.stats span {
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* 技能 */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.skill-card {
  padding: 26px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.skill-card h3 {
  font-size: 1.05rem;
}

.skill-card p {
  margin-top: 8px;
  font-size: 0.92rem;
  color: var(--color-muted);
}

.skill-bar {
  height: 6px;
  margin-top: 20px;
  background-color: var(--color-line);
  border-radius: 999px;
  overflow: hidden;
}

.skill-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #6366f1, #22d3ee);
  transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.skill-card.is-visible .skill-bar span {
  width: var(--level);
}

/* 项目 */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.project-card {
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-md);
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.project-card h3 {
  margin-top: 10px;
  font-size: 1.1rem;
}

.project-card > p:not(.project-tag) {
  margin-top: 10px;
  font-size: 0.92rem;
  color: var(--color-muted);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 22px;
}

.project-tags li {
  padding: 3px 10px;
  font-size: 0.75rem;
  color: var(--color-muted);
  background-color: var(--color-primary-soft);
  border-radius: 999px;
}

/* 联系 */
.section-contact {
  text-align: center;
}

.contact-inner {
  max-width: 620px;
}

.contact-inner h2 {
  margin: 10px 0 16px;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
}

.contact-desc {
  color: var(--color-muted);
}

.section-contact .btn {
  margin-top: 28px;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
}

.social-links a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.88rem;
  color: var(--color-muted);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background-color: var(--color-surface);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.social-links a:hover {
  color: var(--color-primary);
  border-color: rgba(79, 70, 229, 0.4);
}

/* 页脚 */
.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--color-line);
  font-size: 0.85rem;
  color: var(--color-muted);
  text-align: center;
  background-color: var(--color-surface);
}

.site-footer a {
  color: var(--color-muted);
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: var(--color-primary);
}

.footer-icp {
  margin-top: 6px;
  font-size: 0.8rem;
}

/* 页脚点赞按钮 */
.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  margin-top: 16px;
  padding: 8px 18px;
  font-family: inherit;
  font-size: 0.86rem;
  color: var(--color-muted);
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.15s ease,
    background-color 0.2s ease;
}

.like-btn:hover:not(:disabled) {
  color: var(--color-primary);
  border-color: rgba(79, 70, 229, 0.4);
  transform: translateY(-1px);
}

.like-btn:disabled {
  cursor: default;
}

.like-btn.is-liked {
  color: #e11d48;
  background-color: rgba(225, 29, 72, 0.06);
  border-color: rgba(225, 29, 72, 0.35);
}

.like-icon {
  font-size: 1rem;
  line-height: 1;
}

.like-count {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* 首页 Hero 卡片上的爱心按钮：贴在卡片右下边缘 */
.hero-side {
  position: relative;
}

.like-btn--hero {
    position: absolute;
    right: 100px;
    bottom: 223px;
    padding: 8px 7px;
    background-color: var(--color-surface);
}

.like-heart {
  display: block;
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}

.like-btn--hero:hover:not(:disabled) .like-heart {
  transform: scale(1.12);
}

.like-btn.is-liked .like-heart {
  fill: currentColor;
}

/* ==========================================================================
   多页面：页头与内容组件
   ========================================================================== */
.page-hero {
  position: relative;
  padding: calc(var(--header-height) + 64px) 0 56px;
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -140px;
  width: 460px;
  height: 460px;
  background: radial-gradient(
    circle,
    rgba(79, 70, 229, 0.12) 0%,
    rgba(79, 70, 229, 0) 68%
  );
  pointer-events: none;
}

.page-hero h1 {
  position: relative;
  margin: 10px 0 0;
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.page-lead {
  position: relative;
  max-width: 42em;
  margin-top: 16px;
  color: var(--color-muted);
}

.page-meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-meta li {
  padding: 4px 12px;
  font-size: 0.8rem;
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  border-radius: 999px;
}

.prose {
  max-width: 44em;
}

.prose p {
  color: var(--color-muted);
}

.prose p + p {
  margin-top: 16px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.info-card {
  padding: 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.info-card h3 {
  font-size: 1.05rem;
}

.info-card p {
  margin-top: 8px;
  font-size: 0.93rem;
  color: var(--color-muted);
}

.info-card .check-list {
  margin-top: 16px;
}

/* 首页入口卡片 */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

/* 首页入口卡片：整行卡片 */
.entry-card--wide {
  grid-column: 1 / -1;
}

.entry-card {
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.entry-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-md);
}

.entry-index {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.entry-card h3 {
  margin-top: 10px;
  font-size: 1.15rem;
}

.entry-card p {
  margin-top: 10px;
  font-size: 0.93rem;
  color: var(--color-muted);
}

.entry-more {
  margin-top: 22px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* 时间线 */
.timeline {
  display: grid;
  gap: 28px;
  padding-left: 30px;
  border-left: 1px solid var(--color-line);
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -36px;
  width: 11px;
  height: 11px;
  background-color: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
}

.timeline-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.timeline-item h3 {
  margin-top: 6px;
  font-size: 1.02rem;
}

.timeline-item p {
  margin-top: 6px;
  font-size: 0.93rem;
  color: var(--color-muted);
}

/* 行内代码：时间线里的技术标识 */
.timeline-item code {
  padding: 1px 6px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.86em;
  color: var(--color-text);
  background-color: rgba(79, 70, 229, 0.08);
  border-radius: 6px;
}

.timeline-item .check-list {
  margin-top: 14px;
}

.timeline-item .project-tags {
  margin-top: 14px;
  padding-top: 0;
}

/* 微信二维码卡片 */
.qr-card {
  padding: 24px;
  text-align: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.qr-card img {
  width: 100%;
  max-width: 260px;
  height: auto; /* 必须显式声明，否则 HTML 的 height 属性会让图片纵向拉伸 */
  aspect-ratio: 1 / 1;
  object-fit: contain;
  margin: 0 auto;
  border-radius: var(--radius-sm);
}

.qr-card p {
  margin-top: 14px;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

/* 学习路径图：窄屏横向滚动 */
.path-chart {
  overflow-x: auto;
  padding-bottom: 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-surface);
}

.path-chart svg {
  display: block;
  min-width: 760px;
  width: 100%;
  height: auto;
}

/* 三栏卡片 */
.principle-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* 工具清单 */
.tool-groups {
  display: grid;
  gap: 18px;
}

.tool-group {
  padding: 24px 26px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.tool-group h3 {
  font-size: 1rem;
}

.tool-group .tag-list {
  margin-top: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list li {
  padding: 4px 12px;
  font-size: 0.8rem;
  color: var(--color-muted);
  background-color: var(--color-primary-soft);
  border-radius: 999px;
}

/* 清单 */
.check-list {
  display: grid;
  gap: 12px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  top: 4px;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 0.65rem;
  color: #fff;
  background-color: var(--color-primary);
  border-radius: 50%;
}

/* 方向详情 */
.focus-block {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.35fr);
  gap: 48px;
  padding: 40px 0;
  border-top: 1px solid var(--color-line);
}

.focus-block:last-of-type {
  border-bottom: 1px solid var(--color-line);
}

.focus-block h2 {
  margin-top: 8px;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.focus-desc {
  margin-top: 10px;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.focus-block .tag-list {
  margin-top: 18px;
}

.focus-block .check-list {
  margin-top: 14px;
}

/* 联系方式卡片 */
.contact-card {
  display: block;
  padding: 26px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-md);
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.contact-card strong {
  display: block;
  margin-top: 10px;
  font-size: 1rem;
  word-break: break-all;
}

.contact-card p {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--color-muted);
}

/* 页尾 CTA */
.cta-band {
  padding: 68px 0;
  text-align: center;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-line);
}

.cta-band h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.3rem);
  letter-spacing: -0.02em;
}

.cta-band p {
  max-width: 36em;
  margin: 12px auto 0;
  color: var(--color-muted);
}

.cta-band .hero-actions {
  justify-content: center;
  margin-top: 26px;
}

@media (max-width: 900px) {
  .entry-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .principle-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .focus-block {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 720px) {
  .principle-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: calc(var(--header-height) + 40px) 0 40px;
  }

  .cta-band {
    padding: 52px 0;
  }
}

/* ==========================================================================
   滚动出现动画
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-card {
    max-width: 360px;
  }

  /* 单列时让卡片与按钮同宽，按钮才会贴住卡片边缘而不是容器边缘 */
  .hero-side {
    max-width: 360px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 24px 20px;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav a {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    padding: calc(var(--header-height) + 56px) 0 64px;
  }

  .skills-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skill-bar span {
    transition: none;
  }
}