/* ============================================================
 *  style.css  ——  样式全部在这里，一般不需要改
 * ============================================================ */

/* ---------- 主题变量 ---------- */
:root,
[data-theme="dark"] {
  --bg:          #0a0e13;
  --bg-soft:     #0f151d;
  --card:        #131b24;
  --card-hover:  #17212c;
  --border:      #1f2a36;
  --border-soft: #1a242f;
  --text:        #e8eef5;
  --text-dim:    #b3c0cd;
  --muted:       #8494a4;
  --accent:      #2dd4bf;
  --accent-2:    #6366f1;
  --accent-ink:  #04231f;
  --spot:        rgba(45, 212, 191, .13);
  --shadow:      0 18px 44px rgba(0, 0, 0, .45);
  --grid-line:   rgba(255, 255, 255, .022);
}

[data-theme="light"] {
  --bg:          #f6f8fb;
  --bg-soft:     #ffffff;
  --card:        #ffffff;
  --card-hover:  #ffffff;
  --border:      #e2e8f0;
  --border-soft: #edf1f6;
  --text:        #0e141b;
  --text-dim:    #3c4a58;
  --muted:       #64748b;
  --accent:      #0d9488;
  --accent-2:    #4f46e5;
  --accent-ink:  #ffffff;
  --spot:        rgba(13, 148, 136, .09);
  --shadow:      0 14px 34px rgba(15, 23, 42, .09);
  --grid-line:   rgba(15, 23, 42, .028);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .3s ease, color .3s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}

[hidden] { display: none !important; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.01em; }

::selection { background: var(--accent); color: var(--accent-ink); }

.wrap { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  z-index: 60;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .1s linear;
}

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, background .25s;
}
.nav.is-stuck { border-bottom-color: var(--border); }

.nav-inner {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
}
.brand-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  position: relative;
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--muted);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: color-mix(in srgb, var(--text) 6%, transparent); }
.nav-links a.is-active { color: var(--accent); background: color-mix(in srgb, var(--accent) 11%, transparent); }

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

.icon-btn {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.icon-btn:hover { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.icon-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

[data-theme="dark"] .ico-sun { display: none; }
[data-theme="light"] .ico-moon { display: none; }

.nav-burger { display: none; }

/* ---------- 通用 section ---------- */
.section { position: relative; z-index: 1; padding: 92px 0; }

.section-head { margin-bottom: 40px; }
.section-index {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--accent);
  margin-bottom: 8px;
}
.section-title { font-size: clamp(24px, 3.4vw, 32px); }
.section-sub { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

/* ---------- Hero ---------- */
.hero { padding-top: 72px; padding-bottom: 84px; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr .9fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: .04em;
}

.hero-name {
  font-size: clamp(38px, 6.4vw, 62px);
  line-height: 1.1;
  letter-spacing: -.02em;
  background: linear-gradient(100deg, var(--text) 30%, var(--accent) 78%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  margin: 18px 0 0;
  font-size: clamp(16px, 2.1vw, 20px);
  color: var(--accent);
  min-height: 32px;
  font-weight: 500;
}
.caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: -.16em;
  background: var(--accent);
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1 } 50%, 100% { opacity: 0 } }

.hero-tagline {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: 15px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: transform .18s, background .2s, border-color .2s, color .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 32%, transparent); }
.btn-ghost { border-color: var(--border); color: var(--text-dim); }
.btn-ghost:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent); color: var(--accent); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 30px;
  font-size: 13.5px;
  color: var(--muted);
}
.hero-meta li { display: flex; align-items: center; gap: 7px; }
.hero-meta li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .7;
}

/* 头像 */
.hero-visual { position: relative; display: grid; place-items: center; }

.avatar-ring {
  position: relative;
  width: 232px; height: 232px;
  border-radius: 50%;
  padding: 3px;
  background: conic-gradient(from 140deg, var(--accent), var(--accent-2), var(--accent));
  animation: spin 14s linear infinite;
  z-index: 2;
}
.avatar-ring::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--bg);
}
.avatar {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  border-radius: 50%;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: var(--bg-soft);
  font-size: 62px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent);
  animation: spin 14s linear infinite reverse;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

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

.orbit {
  position: absolute;
  border: 1px dashed var(--border);
  border-radius: 50%;
  animation: spin 30s linear infinite;
}
.orbit-1 { width: 300px; height: 300px; }
.orbit-2 { width: 368px; height: 368px; animation-duration: 46s; animation-direction: reverse; }
.orbit::after {
  content: "";
  position: absolute;
  top: -3px; left: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* ---------- 关于我 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-text p { margin: 0 0 16px; color: var(--text-dim); }
.about-text p:last-child { margin-bottom: 0; }

.about-lead {
  display: inline-block;
  min-width: 5.2em;
  font-weight: 600;
  color: var(--accent);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.stat {
  padding: 20px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  text-align: center;
}
.stat-num {
  font-size: 27px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-label { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ---------- 技能 ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.skill-card {
  position: relative;
  overflow: hidden;
  padding: 26px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  transition: border-color .25s, transform .25s;
}
.skill-card:hover { border-color: color-mix(in srgb, var(--accent) 38%, transparent); transform: translateY(-3px); }
.skill-group {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--accent);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.skill-row { margin-bottom: 20px; }
.skill-row:last-child { margin-bottom: 0; }
.skill-name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 6px;
}
.skill-name::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.skill-desc {
  margin: 0;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 6px; bottom: 6px;
  width: 1.5px;
  background: linear-gradient(180deg, var(--accent), var(--border) 70%, transparent);
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -30px; top: 8px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: box-shadow .25s, background .25s;
}
.tl-item:hover::before { background: var(--accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 16%, transparent); }

.tl-period {
  font-size: 12.5px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: .03em;
}
.tl-title { font-size: 17px; margin: 5px 0 2px; }
.tl-org { font-size: 13.5px; color: var(--muted); }
.tl-desc { margin: 9px 0 0; color: var(--text-dim); font-size: 14px; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }

.tag {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  white-space: nowrap;
}

/* ---------- 项目卡片 ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.project-card {
  position: relative;
  overflow: hidden;
  padding: 26px 24px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  transition: border-color .25s, transform .25s, background .25s;
}
.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), var(--spot), transparent 68%);
}
.project-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-4px); background: var(--card-hover); }
.project-card:hover::before { opacity: 1; }

.project-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.project-name { font-size: 17px; }
.project-arrow { color: var(--muted); transition: transform .25s, color .25s; flex: none; }
.project-arrow svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.project-card:hover .project-arrow { color: var(--accent); transform: translate(2px, -2px); }

.project-head {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--accent);
  letter-spacing: .02em;
}
.project-summary { margin: 10px 0 0; color: var(--text-dim); font-size: 14px; }
.project-stack { margin: 14px 0 0; font-size: 12.5px; color: var(--muted); }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }

/* ---------- 下载资源 ---------- */
.dl-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.dl-chip {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 99px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.dl-chip:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.dl-chip.is-on {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.dl-card {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  transition: border-color .25s, transform .25s, background .25s;
}
.dl-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), var(--spot), transparent 68%);
}
.dl-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-4px); background: var(--card-hover); }
.dl-card:hover::before { opacity: 1; }

.dl-icon {
  position: relative;
  flex: none;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 11%, transparent);
  color: var(--accent);
  transition: background .25s;
}
.dl-icon svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.dl-card:hover .dl-icon { background: color-mix(in srgb, var(--accent) 20%, transparent); }

/* 外链资源（官网 / 网盘）用第二主色区分，提示会跳转新窗口 */
.dl-icon.is-ext { background: color-mix(in srgb, var(--accent-2) 13%, transparent); color: var(--accent-2); }
.dl-card:hover .dl-icon.is-ext { background: color-mix(in srgb, var(--accent-2) 22%, transparent); }
.dl-card:has(.dl-icon.is-ext):hover { border-color: color-mix(in srgb, var(--accent-2) 40%, transparent); }
.dl-card:has(.dl-icon.is-ext):hover .dl-arrow { color: var(--accent-2); }

.dl-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.dl-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.dl-name { font-size: 15.5px; font-weight: 500; color: var(--text); line-height: 1.5; }
.dl-arrow { flex: none; color: var(--muted); transition: transform .25s, color .25s; }
.dl-arrow svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.dl-card:hover .dl-arrow { color: var(--accent); transform: translate(2px, -2px); }

.dl-desc { margin-top: 8px; font-size: 13.5px; line-height: 1.7; color: var(--text-dim); }
.dl-meta { margin-top: 10px; font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.dl-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.dl-empty { margin: 0; font-size: 14px; color: var(--muted); }

@media (max-width: 720px) {
  .downloads-grid { grid-template-columns: 1fr; }
  .dl-card { padding: 18px 16px; gap: 13px; }
  .dl-icon { width: 40px; height: 40px; border-radius: 10px; }
}

/* ---------- 联系方式 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  transition: border-color .25s, transform .25s, background .25s;
}
.contact-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-3px); background: var(--card-hover); }
.contact-icon {
  flex: none;
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: color-mix(in srgb, var(--accent) 11%, transparent);
  color: var(--accent);
}
.contact-icon svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.contact-label { font-size: 12.5px; color: var(--muted); }
.contact-value { font-size: 14.5px; word-break: break-all; }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 30px 0;
  margin-top: 20px;
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; align-items: center; }
.footer-copy, .footer-legal { margin: 0; font-size: 13px; color: var(--muted); }
.footer-legal a { transition: color .2s; }
.footer-legal a:hover { color: var(--accent); }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 24px; }
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .58);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fade .22s ease;
}
.modal-panel {
  position: relative;
  width: min(620px, 100%);
  max-height: 82vh;
  overflow-y: auto;
  padding: 34px 32px 30px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  animation: pop .26s cubic-bezier(.22, .9, .3, 1);
}
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.97) } to { opacity: 1; transform: none } }

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color .2s, background .2s;
}
.modal-close:hover { color: var(--text); background: color-mix(in srgb, var(--text) 7%, transparent); }
.modal-close svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }

.modal-title { font-size: 21px; padding-right: 36px; }
.modal-stack { margin: 8px 0 0; font-size: 13px; color: var(--accent); }
.modal-detail { margin: 18px 0 0; color: var(--text-dim); font-size: 14.5px; }
.modal-list { margin: 0; padding: 0; list-style: none; }
.modal-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.75;
}
.modal-list li:last-child { margin-bottom: 0; }
.modal-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.modal-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.modal-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 18px);
  z-index: 90;
  padding: 11px 20px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--card);
  color: var(--text);
  font-size: 13.5px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s cubic-bezier(.22, .8, .3, 1), transform .7s cubic-bezier(.22, .8, .3, 1);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { order: -1; }
  .avatar-ring { width: 176px; height: 176px; }
  .avatar { font-size: 48px; }
  .orbit-1 { width: 226px; height: 226px; }
  .orbit-2 { width: 276px; height: 276px; }
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 720px) {
  .wrap, .nav-inner { width: calc(100% - 36px); }
  .section { padding: 68px 0; }
  .nav-burger { display: grid; }
  .nav-links {
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 10px 18px 16px;
    margin: 0;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 11px 14px; font-size: 15px; }
  .stats { grid-template-columns: 1fr 1fr 1fr; }
  .stat { padding: 16px 8px; }
  .stat-num { font-size: 22px; }
  .modal-panel { padding: 28px 22px 24px; }
  .timeline { padding-left: 26px; }
  .tl-item::before { left: -26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 打印（当纸质简历用） ---------- */
@media print {
  .nav, .scroll-progress, .toast, .modal, .hero-actions, .orbit, .footer-legal,
  #downloads, .dl-filter { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; }
  body::before { display: none; }
  .section { padding: 18px 0; page-break-inside: avoid; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .avatar-ring { animation: none; background: #ccc; }
  .card, .skill-card, .project-card, .contact-card, .stat, .dl-card { border-color: #ccc !important; background: #fff !important; }
}