/* ==========================================================================
   史沐凡作品集 · 全站样式
   --------------------------------------------------------------------------
   设计语言：深色「创意工作室」风，霓虹渐变呼应《跳舞的线》的画面。
   无外部依赖（不加载任何在线字体 / 图标库），双击打开也能正常显示。
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --bg: #06090f;
  --bg-2: #0a111c;
  --bg-3: #0e1725;
  --panel: rgba(13, 22, 35, 0.72);
  --panel-solid: #0d1623;
  --line: rgba(130, 205, 255, 0.14);
  --line-strong: rgba(130, 205, 255, 0.3);
  --ink: #e9f3fb;
  --ink-dim: #b9cddd;
  --muted: #839cb1;

  --cyan: #5ff0ff;
  --pink: #ff5fa8;
  --gold: #ffd166;
  --green: #7cffb2;
  --violet: #a78bfa;
  --orange: #ff9a4d;

  --radius-lg: 22px;
  --radius: 16px;
  --radius-sm: 11px;
  --maxw: 1180px;
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.9);
  --shadow-glow: 0 0 0 1px var(--line), 0 22px 55px -26px rgba(95, 240, 255, 0.35);

  --sans: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 页面背景：两团缓慢漂浮的霓虹光斑 */
body::before {
  content: "";
  position: fixed;
  inset: -20vmax;
  z-index: -2;
  background:
    radial-gradient(38vmax 30vmax at 12% -6%, rgba(95, 240, 255, 0.16), transparent 62%),
    radial-gradient(34vmax 28vmax at 92% 4%, rgba(255, 95, 168, 0.14), transparent 60%),
    radial-gradient(40vmax 34vmax at 50% 108%, rgba(167, 139, 250, 0.12), transparent 62%);
  filter: blur(8px);
  animation: drift 26s ease-in-out infinite alternate;
}

/* 细网格纹理，增加「工作室 / 蓝图」感 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(130, 205, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130, 205, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
}

@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(0, -3vmax, 0) scale(1.06); }
}

img { max-width: 100%; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: rgba(95, 240, 255, 0.3); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: #0a0f18; }
::-webkit-scrollbar-thumb {
  background: rgba(130, 205, 255, 0.22);
  border-radius: 99px;
  border: 3px solid #0a0f18;
}
::-webkit-scrollbar-thumb:hover { background: rgba(130, 205, 255, 0.4); }

/* ---------- 3. 布局容器 ---------- */
.wrap { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }
.section { padding: 68px 0; }
.section--tight { padding: 40px 0; }

/* ---------- 4. 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  background: linear-gradient(180deg, rgba(6, 9, 15, 0.86), rgba(6, 9, 15, 0.62));
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: var(--ink);
  font-size: 16.5px;
  text-decoration: none;
  flex-shrink: 0;
}
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(140deg, #5ff0ff, #a78bfa 52%, #ff5fa8);
  box-shadow: 0 7px 20px -9px rgba(95, 240, 255, 0.95);
}
.brand__mark svg { width: 22px; height: 22px; }
.brand__sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  display: block;
  line-height: 1.2;
}
.brand__name { line-height: 1.2; }

.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a {
  color: var(--ink-dim);
  font-size: 14.5px;
  padding: 8px 13px;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
  white-space: nowrap;
}
.nav a:hover { color: var(--ink); background: rgba(130, 205, 255, 0.09); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--cyan); background: rgba(95, 240, 255, 0.12); }

/* ---------- 5. 按钮 ---------- */
.btn {
  --btn-bg: linear-gradient(160deg, rgba(95, 240, 255, 0.9), rgba(80, 180, 255, 0.75));
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--btn-bg);
  color: #04141c;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.16s, box-shadow 0.2s, filter 0.2s;
  box-shadow: 0 12px 30px -14px rgba(95, 240, 255, 0.85);
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.06); text-decoration: none; }
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: rgba(130, 205, 255, 0.07);
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: none;
}
.btn--ghost:hover { background: rgba(130, 205, 255, 0.14); }
.btn--pink {
  --btn-bg: linear-gradient(160deg, #ff9ecb, #ff5fa8);
  color: #2a0518;
  box-shadow: 0 12px 30px -14px rgba(255, 95, 168, 0.9);
}
.btn--gold {
  --btn-bg: linear-gradient(160deg, #ffe6a3, #ffc93c);
  color: #2a1d00;
  box-shadow: 0 12px 30px -14px rgba(255, 201, 60, 0.9);
}
.btn--sm { padding: 8px 16px; font-size: 13.5px; }
.btn--block { width: 100%; justify-content: center; }

/* ---------- 6. Hero ---------- */
.hero { position: relative; padding: 74px 0 54px; }
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--gold);
  border: 1px solid rgba(255, 209, 102, 0.35);
  background: rgba(255, 209, 102, 0.08);
  padding: 6px 15px;
  border-radius: 999px;
  letter-spacing: 0.5px;
}
.hero__eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(34px, 6.4vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.5px;
  font-weight: 900;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--cyan) 6%, var(--violet) 46%, var(--pink) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  margin: 22px 0 0;
  max-width: 640px;
  font-size: clamp(15px, 1.6vw, 18.5px);
  color: var(--ink-dim);
  line-height: 1.85;
}
.hero__actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }

.hero__stats {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  gap: 14px;
  max-width: 760px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 18px;
  backdrop-filter: blur(10px);
}
.stat b { display: block; font-size: 26px; color: var(--cyan); font-weight: 800; line-height: 1.2; }
.stat span { font-size: 12.5px; color: var(--muted); letter-spacing: 0.4px; }

/* ---------- 7. 区块标题 ---------- */
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.sec-head h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 31px);
  letter-spacing: 0.3px;
  font-weight: 800;
}
.sec-head p { margin: 7px 0 0; color: var(--muted); font-size: 14.5px; max-width: 560px; }
.sec-head__line {
  width: 3px; height: 22px; border-radius: 3px;
  background: linear-gradient(var(--cyan), var(--pink));
  display: inline-block; margin-right: 12px; vertical-align: -3px;
}

/* ---------- 8. 作品卡片网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(288px, 1fr));
  gap: 22px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.24s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.24s, border-color 0.24s;
  text-decoration: none;
  color: inherit;
}
.card:hover, .card:focus-visible {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-glow);
  text-decoration: none;
  outline: none;
}

.card__cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-3);
  overflow: hidden;
}
.card__cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card__cover img { transform: scale(1.05); }

.card__badge {
  position: absolute;
  top: 13px; left: 13px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(6, 9, 15, 0.78);
  border: 1px solid var(--line-strong);
  color: var(--cyan);
  backdrop-filter: blur(6px);
}
.card__badge[data-type="doc"] { color: var(--gold); }
.card__badge[data-type="app"] { color: var(--green); }
.card__badge[data-type="art"] { color: var(--pink); }
.card__badge[data-type="video"] { color: var(--violet); }

.card__play {
  position: absolute;
  right: 13px; bottom: 13px;
  width: 40px; height: 40px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(95, 240, 255, 0.92);
  color: #04141c;
  font-size: 15px;
  transform: scale(0.82);
  opacity: 0;
  transition: transform 0.24s, opacity 0.24s;
  box-shadow: 0 8px 22px -8px rgba(95, 240, 255, 0.9);
}
.card:hover .card__play { transform: scale(1); opacity: 1; }

.card__body { padding: 17px 19px 20px; display: flex; flex-direction: column; flex: 1; }
.card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.2px;
  display: flex;
  align-items: baseline;
  gap: 9px;
  flex-wrap: wrap;
}
.card__title small { font-size: 11.5px; color: var(--muted); font-weight: 500; letter-spacing: 0.6px; }
.card__summary {
  margin: 10px 0 0;
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.72;
  flex: 1;
}
.card__foot {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11.5px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
  letter-spacing: 0.3px;
}
.card__year { margin-left: auto; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }

/* 筛选条 + 搜索框 */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.filters { display: flex; gap: 9px; flex-wrap: wrap; }
.chip {
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ink-dim);
  background: rgba(130, 205, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 16px;
  cursor: pointer;
  transition: 0.18s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.chip:hover { color: var(--ink); background: rgba(130, 205, 255, 0.13); text-decoration: none; }
.chip[aria-pressed="true"] {
  color: #04141c;
  background: linear-gradient(160deg, var(--cyan), #58b8ff);
  border-color: transparent;
  font-weight: 700;
}
.chip small { opacity: 0.72; margin-left: 5px; font-size: 11.5px; }

.search {
  margin-left: auto;
  flex: 0 1 240px;
  min-width: 170px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: rgba(130, 205, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 17px;
  transition: 0.18s;
}
.search::placeholder { color: var(--muted); }
.search:focus {
  outline: none;
  border-color: var(--line-strong);
  background: rgba(130, 205, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(95, 240, 255, 0.12);
}
.result-hint { font-size: 13px; color: var(--muted); margin: -8px 0 18px; }
@media (max-width: 720px) {
  .search { margin-left: 0; flex: 1 1 100%; }
}

/* ---------- 9. 空状态 / 提示 ---------- */
.empty {
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  color: var(--muted);
}

/* ---------- 10. 详情页 ---------- */
.detail-hero { padding: 42px 0 8px; }
.crumbs { font-size: 13px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--ink-dim); }

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.9fr);
  gap: 34px;
  align-items: start;
}
@media (max-width: 900px) { .detail-layout { grid-template-columns: 1fr; } }

.detail-title { margin: 16px 0 0; font-size: clamp(28px, 4.6vw, 44px); font-weight: 900; letter-spacing: -0.3px; }
.detail-sub { color: var(--muted); font-size: 15px; margin: 8px 0 0; letter-spacing: 0.4px; }
.detail-cover {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--bg-3);
  aspect-ratio: 16 / 9;
}
.detail-cover img { width: 100%; height: 100%; object-fit: cover; }

.prose { color: var(--ink-dim); font-size: 15.5px; line-height: 1.9; }
.prose p { margin: 0 0 1.1em; }
.prose h3 {
  color: var(--ink);
  font-size: 17px;
  margin: 30px 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--cyan);
}
.prose ul { margin: 0 0 1.1em; padding-left: 22px; }
.prose li { margin: 5px 0; }
.prose strong { color: var(--ink); }
.prose code {
  font-family: var(--mono);
  font-size: 13px;
  background: rgba(95, 240, 255, 0.1);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  color: #a9f0ff;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 19px 21px;
  backdrop-filter: blur(10px);
}
.panel + .panel { margin-top: 18px; }
.panel h3 {
  margin: 0 0 13px;
  font-size: 14px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
}
.spec { display: grid; gap: 9px; margin: 0; }
.spec div { display: flex; justify-content: space-between; gap: 14px; font-size: 14px; }
.spec dt { color: var(--muted); flex-shrink: 0; }
.spec dd { margin: 0; text-align: right; color: var(--ink); }

.link-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.link-list a {
  display: flex; align-items: center; gap: 9px;
  font-size: 14px;
  color: var(--ink-dim);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  transition: 0.18s;
  text-decoration: none;
}
.link-list a:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  background: rgba(130, 205, 255, 0.08);
  text-decoration: none;
  transform: translateX(3px);
}
.link-list a::before { content: "↗"; color: var(--cyan); font-size: 13px; }

/* 归档区 */
.archive-list { display: grid; gap: 12px; }
.archive-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: rgba(13, 22, 35, 0.5);
  text-decoration: none;
  color: inherit;
  transition: 0.2s;
}
.archive-item:hover {
  border-style: solid;
  background: rgba(130, 205, 255, 0.07);
  text-decoration: none;
  transform: translateX(4px);
}
.archive-item__thumb {
  width: 62px; height: 46px; border-radius: 9px; object-fit: cover;
  border: 1px solid var(--line); flex-shrink: 0;
}
.archive-item b { display: block; font-size: 15px; }
.archive-item span { font-size: 12.5px; color: var(--muted); }

/* ---------- 11. 试玩页 ---------- */
.play-page { display: flex; flex-direction: column; height: 100vh; height: 100dvh; overflow: hidden; }
/* 让 #app 真正撑满剩余高度，iframe 才能填满整屏 */
body.play-page #app { flex: 1 1 auto; display: flex; flex-direction: column; min-height: 0; }
.play-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 13, 21, 0.9);
  backdrop-filter: blur(12px);
  flex: 0 0 auto;
}
.play-bar__title {
  font-weight: 800;
  font-size: 15.5px;
  margin-right: auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.play-bar__title span { color: var(--muted); font-weight: 500; font-size: 12.5px; margin-left: 8px; }
@media (max-width: 720px) {
  .play-bar { padding: 8px 10px; gap: 7px; }
  .play-bar__title { font-size: 14px; }
  .play-bar__title span { display: none; }
}
.play-frame { flex: 1; border: 0; width: 100%; background: #05070d; min-height: 0; }
.play-note {
  text-align: center;
  padding: 10px;
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: rgba(8, 13, 21, 0.9);
}

/* ---------- 12. 关于页 ---------- */
.about-hero { display: grid; grid-template-columns: auto 1fr; gap: 30px; align-items: center; }
@media (max-width: 700px) { .about-hero { grid-template-columns: 1fr; text-align: center; } }
.avatar {
  width: 132px; height: 132px;
  border-radius: 34px;
  display: grid; place-items: center;
  font-size: 46px;
  font-weight: 900;
  color: #04141c;
  background: linear-gradient(150deg, var(--cyan), var(--violet) 55%, var(--pink));
  box-shadow: 0 22px 50px -20px rgba(95, 240, 255, 0.7);
  margin-inline: auto;
}
@media (max-width: 700px) { .avatar { margin-bottom: 8px; } }

.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--cyan), var(--violet), var(--pink));
  opacity: 0.5;
}
.timeline__item { position: relative; padding-bottom: 28px; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px; top: 7px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--cyan);
  box-shadow: 0 0 12px rgba(95, 240, 255, 0.7);
}
.timeline__item h3 { margin: 0 0 5px; font-size: 16.5px; color: var(--ink); }
.timeline__item p { margin: 0; color: var(--ink-dim); font-size: 14.5px; }
.timeline__when { font-size: 12.5px; color: var(--gold); letter-spacing: 1px; display: block; margin-bottom: 3px; }

.quote-block {
  border-left: 3px solid var(--gold);
  background: rgba(255, 209, 102, 0.06);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  font-size: 17px;
  color: var(--ink);
  line-height: 1.85;
}
.quote-block small { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }

/* ---------- 12.5 证书 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(248px, 1fr));
  gap: 24px;
}
.cert {
  margin: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.24s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.24s, border-color 0.24s;
}
.cert:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-glow);
}

.cert__thumb {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #f3f1ee;
  aspect-ratio: 1 / 1.414;      /* A4，证书刚好不用裁 */
  cursor: zoom-in;
  overflow: hidden;
}
.cert__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.cert__thumb:hover img { transform: scale(1.03); }

.cert__zoom {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%) translateY(8px);
  font-size: 12px;
  font-weight: 700;
  color: #04141c;
  background: rgba(95, 240, 255, 0.92);
  padding: 5px 13px;
  border-radius: 999px;
  opacity: 0;
  transition: 0.24s;
  white-space: nowrap;
}
.cert__thumb:hover .cert__zoom { opacity: 1; transform: translateX(-50%); }

.cert__body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.cert__level {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  color: #2a1d00;
  background: linear-gradient(160deg, #ffe6a3, #ffc93c);
  padding: 3px 13px;
  border-radius: 999px;
}
.cert__body h3 { margin: 0; font-size: 16px; line-height: 1.5; font-weight: 800; }
.cert__body p { margin: 0; color: var(--ink-dim); font-size: 13.5px; flex: 1; }
.cert__meta { display: flex; gap: 10px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); }
.cert__soon { color: var(--gold); }

/* 还没下发的证书：占位卡 */
.cert--pending { border-style: dashed; }
.cert--pending:hover { transform: translateY(-3px); }
.cert__thumb--pending {
  aspect-ratio: 1 / 1.414;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 6px;
  color: var(--muted);
  cursor: default;
  background:
    repeating-linear-gradient(45deg, rgba(130, 205, 255, 0.05) 0 14px, rgba(130, 205, 255, 0.1) 14px 28px),
    var(--bg-3);
}
.cert__pending-mark { font-size: 40px; font-weight: 900; letter-spacing: 2px; color: rgba(255, 209, 102, 0.6); }
.cert__pending-sub { font-size: 13px; letter-spacing: 1px; }

/* 点开看大图 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 26px;
  background: rgba(3, 6, 11, 0.92);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.22s;
  cursor: zoom-out;
}
.lightbox.is-open { opacity: 1; }
.lightbox img {
  max-width: min(100%, 860px);
  max-height: 100%;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.95);
}
.lightbox__close {
  position: absolute;
  top: 18px;
  right: 20px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 17px;
  cursor: pointer;
  color: var(--ink);
  background: rgba(130, 205, 255, 0.12);
  border: 1px solid var(--line-strong);
}
.lightbox__close:hover { background: rgba(130, 205, 255, 0.24); }

/* ---------- 13. CTA 横幅 ---------- */
.cta {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(60% 140% at 12% 0%, rgba(95, 240, 255, 0.16), transparent 62%),
    radial-gradient(55% 130% at 92% 100%, rgba(255, 95, 168, 0.16), transparent 62%),
    rgba(13, 22, 35, 0.72);
  padding: 40px 34px;
  text-align: center;
}
.cta h2 { margin: 0 0 10px; font-size: clamp(21px, 3vw, 29px); }
.cta p { margin: 0 auto 24px; color: var(--ink-dim); max-width: 520px; }

/* ---------- 14. 页脚 ---------- */
.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--line);
  padding: 34px 0 44px;
  color: var(--muted);
  font-size: 13.5px;
}
.site-footer__inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.site-footer__inner b { color: var(--ink-dim); }
.site-footer nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer nav a { color: var(--muted); }
.site-footer nav a:hover { color: var(--cyan); }

/* ---------- 15. 加载 / 滚动动画 ---------- */
.skeleton {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(100deg, rgba(130, 205, 255, 0.05) 30%, rgba(130, 205, 255, 0.12) 50%, rgba(130, 205, 255, 0.05) 70%);
  background-size: 220% 100%;
  animation: shimmer 1.5s linear infinite;
  min-height: 300px;
}
@keyframes shimmer { from { background-position: 120% 0; } to { background-position: -120% 0; } }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 16. 移动端 ---------- */
@media (max-width: 720px) {
  .wrap { width: min(100% - 28px, var(--maxw)); }
  .section { padding: 46px 0; }
  .hero { padding: 40px 0 30px; }
  .hero__stats { margin-top: 32px; }
  .site-header__inner { height: 58px; gap: 8px; }
  .brand__sub { display: none; }
  .nav a { padding: 7px 10px; font-size: 13.5px; }
  .grid { grid-template-columns: 1fr; gap: 18px; }
  .cta { padding: 30px 20px; }
}

/* ---------- 17. 打印 ---------- */
@media print {
  body::before, body::after, .site-header, .site-footer, .btn { display: none !important; }
  body { background: #fff; color: #000; }
}