/* awesome-skillkit 站点样式 — 零依赖，纯 CSS 变量换肤
   注意：背景网格用 .bg-grid，卡片容器用 .grid——两者绝不能撞名
   （历史 bug：同名导致 position:absolute 合并进卡片容器，卡片飘移、容器塌陷） */
:root {
  --bg: #070b14;
  --bg2: #0b1120;
  --panel: rgba(255, 255, 255, .045);
  --panel-2: rgba(255, 255, 255, .07);
  --text: #e8eefb;
  --muted: #8ea0bd;
  --border: rgba(255, 255, 255, .09);
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  --accent: #22d3ee;
  --accent2: #6366f1;
  --radius: 16px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
:root[data-theme="light"] {
  --bg: #f4f7fd;
  --bg2: #eaf0fa;
  --panel: #ffffff;
  --panel-2: #f7f9fe;
  --text: #0c1524;
  --muted: #5b6b85;
  --border: rgba(12, 21, 36, .1);
  --shadow: 0 14px 34px rgba(15, 23, 42, .1);
}
:root[data-accent="violet"] { --accent: #a78bfa; --accent2: #f472b6; }
:root[data-accent="amber"] { --accent: #fbbf24; --accent2: #fb7185; }

* { box-sizing: border-box; }
[hidden] { display: none !important; } /* .grid/.chain-view 的 display 会盖掉 UA 的 [hidden] 规则，必须显式兜底 */
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC",
        "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(1180px, 100% - 40px); margin: 0 auto; }
::selection { background: color-mix(in srgb, var(--accent) 35%, transparent); }

/* ---------- 背景 ---------- */
.bg-layer { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5;
  animation: drift 16s ease-in-out infinite alternate; }
.orb-1 { width: 620px; height: 620px; left: -180px; top: -240px;
  background: radial-gradient(circle, var(--accent), transparent 68%); }
.orb-2 { width: 540px; height: 540px; right: -160px; top: -120px;
  background: radial-gradient(circle, var(--accent2), transparent 68%);
  animation-delay: -8s; }
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(60px, 40px) scale(1.08); }
}
.bg-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 70%);
  opacity: .35;
}

/* ---------- Hero ---------- */
.hero { padding: 54px 0 34px; }
.hero-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand {
  font: 700 13px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  padding: 8px 13px; border: 1px solid var(--border); border-radius: 999px;
  background: var(--panel); backdrop-filter: blur(8px);
}
.theme-tools { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.seg { display: flex; gap: 7px; padding: 4px 8px; border: 1px solid var(--border);
  border-radius: 999px; background: var(--panel); }
.dot { width: 15px; height: 15px; border-radius: 50%; border: 2px solid transparent;
  cursor: pointer; padding: 0; transition: transform .15s; }
.dot-cyan { background: linear-gradient(135deg, #22d3ee, #6366f1); }
.dot-violet { background: linear-gradient(135deg, #a78bfa, #f472b6); }
.dot-amber { background: linear-gradient(135deg, #fbbf24, #fb7185); }
.dot:hover { transform: scale(1.2); }
.dot[aria-pressed="true"] { border-color: var(--text); transform: scale(1.15); }
.ghost-btn { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); cursor: pointer; font-size: 16px; }
.ghost-btn:hover { background: var(--panel-2); }

.hero h1 {
  margin: 26px 0 12px; font-size: clamp(30px, 5.2vw, 54px); line-height: 1.12;
  letter-spacing: -.02em; font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.tagline { margin: 0 0 26px; color: var(--muted); font-size: clamp(14px, 1.6vw, 17px); max-width: 720px; }

/* hero 入场节奏：自上而下依次浮现 */
.hero h1, .tagline, .stats, .stats-note, .hero-actions { animation: rise .55s cubic-bezier(.2,.7,.3,1) both; }
.hero h1 { animation-delay: .02s; }
.tagline { animation-delay: .09s; }
.stats { animation-delay: .16s; }
.stats-note { animation-delay: .2s; }
.hero-actions { animation-delay: .24s; }

.stats { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.stat {
  flex: 1 1 150px; padding: 16px 18px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--panel); backdrop-filter: blur(10px);
}
.stat b { display: block; font-size: 28px; line-height: 1.1; font-weight: 800;
  background: linear-gradient(100deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 12.5px; letter-spacing: .04em; }
.stats-note { margin: -14px 0 22px; font-size: 12px; color: var(--muted); }
.stats-note:empty { margin: 0; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  padding: 11px 20px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--panel); font-weight: 600; font-size: 14px; cursor: pointer;
  transition: transform .16s, box-shadow .16s, background .16s; display: inline-block;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); background: var(--panel-2); }
.btn.primary {
  background: linear-gradient(100deg, var(--accent), var(--accent2));
  color: #04121f; border-color: transparent;
}
:root[data-theme="light"] .btn.primary { color: #08111f; }

/* ---------- Toolbar ---------- */
.toolbar { position: sticky; top: 0; z-index: 20; padding: 14px 0 10px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.bar { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.search { position: relative; flex: 1 1 300px; }
.search input {
  width: 100%; padding: 12px 38px 12px 38px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  font-size: 14.5px; outline: none;
}
.search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.clear { position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  border: 0; background: transparent; color: var(--muted); font-size: 20px; cursor: pointer; }
.tabs { display: flex; gap: 6px; padding: 4px; border: 1px solid var(--border);
  border-radius: 12px; background: var(--panel); }
.tab { border: 0; background: transparent; color: var(--muted); padding: 8px 15px;
  border-radius: 9px; cursor: pointer; font-size: 14px; font-weight: 600; }
.tab.active { background: linear-gradient(100deg, var(--accent), var(--accent2)); color: #04121f; }
.tab b { font-weight: 700; opacity: .75; font-size: 12px; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.chip { padding: 6px 13px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--panel); color: var(--muted); font-size: 13px; cursor: pointer;
  transition: .15s; white-space: nowrap; }
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip.active { background: color-mix(in srgb, var(--accent) 18%, transparent);
  border-color: var(--accent); color: var(--text); }
.chip i { font-style: normal; opacity: .6; font-size: 11.5px; }

/* 两级导航：一级 = 场景库（更醒目），二级 = 能力域（随场景联动） */
.level { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.level .chips { margin-top: 0; flex: 1 1 auto; min-width: 0; align-items: center; }
.level-tag { flex: none; font: 700 11px/1 var(--mono); letter-spacing: .14em;
  color: var(--muted); text-transform: uppercase; opacity: .85; }
#groupChips .chip { padding: 8px 15px; font-size: 14px; font-weight: 600; }
#groupChips .chip.active { font-weight: 700; }
@media (max-width: 640px) {
  /* 竖排时用 stretch：让 .chips 拿到容器宽度，≤720px 的横向滚动才生效
     （align-items:flex-start 会让子项按 max-content 定宽，整页被撑出横向滚动） */
  .level { flex-direction: column; align-items: stretch; gap: 4px; }
}

/* ---------- 卡片 ---------- */
h2.sec { margin: 30px 0 14px; font-size: 15px; color: var(--muted); font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; }
.hint { color: var(--muted); font-size: 13px; margin: 18px 0 6px; min-height: 1em; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 14px; padding: 18px 0 10px; }
.card {
  --dc: var(--accent); /* 域色，JS 按域注入 */
  position: relative;
  border: 1px solid var(--border); border-radius: var(--radius); padding: 18px;
  background: var(--panel); backdrop-filter: blur(10px); display: flex;
  flex-direction: column; gap: 10px;
  transition: transform .18s, box-shadow .18s, border-color .18s;
  animation: rise .4s cubic-bezier(.2,.7,.3,1) both;
  overflow: hidden;
}
/* 顶部域色细线：hover 时亮起，一眼识别技能域 */
.card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--dc), transparent 70%);
  opacity: 0; transition: opacity .18s; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--dc) 45%, transparent); }
.card:hover::before { opacity: 1; }
.card h3 { margin: 0; font-size: 16.5px; font-weight: 700; word-break: break-word;
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.card h3 .dom { font: 600 11px/1.7 var(--mono); color: var(--dc);
  text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
.card p { margin: 0; color: var(--muted); font-size: 13.6px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card mark { background: color-mix(in srgb, var(--dc) 30%, transparent); color: var(--text);
  border-radius: 3px; padding: 0 1px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font: 500 11.5px/1 var(--mono); padding: 5px 9px; border-radius: 7px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted); }
.tag.pack { color: var(--dc); border-color: color-mix(in srgb, var(--dc) 40%, transparent); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 2px; }
.act {
  padding: 8px 13px; border-radius: 10px; font-size: 13px; font-weight: 600; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  display: inline-flex; align-items: center; gap: 6px; transition: .15s;
}
.act:hover { border-color: var(--dc); transform: translateY(-1px); }
.act.dl { background: linear-gradient(100deg, var(--accent), var(--accent2)); color: #04121f; border-color: transparent; }
.act.sm { padding: 6px 10px; font-size: 12px; font-weight: 500; color: var(--muted); }
.alt { font-size: 12px; color: var(--muted); }
.alt a { color: var(--muted); text-decoration: underline dotted; }
.alt a:hover { color: var(--dc); }
.disclose { border: 0; background: transparent; color: var(--dc); font-size: 12.5px;
  cursor: pointer; padding: 0; align-self: flex-start; }
.skill-list { display: none; flex-wrap: wrap; gap: 6px; padding-top: 4px; }
.skill-list.open { display: flex; }
.skill-list button { border: 1px solid var(--border); background: var(--panel-2);
  color: var(--text); border-radius: 7px; padding: 4px 8px; font-size: 12px; cursor: pointer;
  font-family: var(--mono); }
.skill-list button:hover { border-color: var(--dc); color: var(--dc); }

/* ---------- 链条视图 ---------- */
.chain-view { padding: 18px 0 10px; }
.chain-domain { border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 14px; background: var(--panel);
  animation: rise .4s cubic-bezier(.2,.7,.3,1) both; }
.chain-domain h3 { margin: 0 0 4px; font-size: 17px; display: flex; align-items: center; gap: 9px; }
.chain-domain h3::before { content: ""; width: 9px; height: 9px; border-radius: 3px;
  background: var(--dc, var(--accent)); box-shadow: 0 0 10px var(--dc, var(--accent)); }
.chain-domain .sub { color: var(--muted); font-size: 12.5px; margin-bottom: 14px;
  font-family: var(--mono); }
.chain { padding: 12px 0; border-top: 1px dashed var(--border); }
.chain:first-of-type { border-top: 0; }
.chain .name { font: 600 13px/1 var(--mono); color: var(--dc, var(--accent)); margin-bottom: 8px; }
.steps { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.step { padding: 5px 10px; border-radius: 8px; background: var(--panel-2);
  border: 1px solid var(--border); font: 500 12.5px/1.3 var(--mono); }
.step.opt { opacity: .72; border-style: dashed; }
.step .q { color: var(--dc, var(--accent)); margin-left: 4px; }
.arrow { color: var(--muted); font-size: 12px; }

/* ---------- 页脚 / 浮层 ---------- */
.foot { padding: 34px 0 50px; color: var(--muted); font-size: 13px;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  border-top: 1px solid var(--border); margin-top: 30px; }
.foot-links { display: flex; gap: 16px; flex-wrap: wrap; }
.foot a:hover { color: var(--accent); }
.empty { text-align: center; color: var(--muted); padding: 60px 0; font-size: 15px; }
.empty-icon { display: block; font-size: 42px; margin-bottom: 10px; opacity: .5; }
.totop { position: fixed; right: 22px; bottom: 26px; width: 44px; height: 44px;
  border-radius: 50%; border: 1px solid var(--border); background: var(--panel);
  backdrop-filter: blur(10px); color: var(--text); font-size: 18px; cursor: pointer;
  z-index: 50; transition: .18s; }
.totop:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow); }
.toast { position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%);
  background: linear-gradient(100deg, var(--accent), var(--accent2)); color: #04121f;
  padding: 11px 20px; border-radius: 12px; font-weight: 600; font-size: 14px;
  box-shadow: var(--shadow); z-index: 60; animation: rise .25s both; }

/* ---------- 骨架屏 ---------- */
.sk { position: relative; overflow: hidden; color: transparent !important; pointer-events: none; }
.sk::after { content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 30%,
    color-mix(in srgb, var(--text) 7%, transparent) 50%, transparent 70%);
  background-size: 200% 100%; animation: shimmer 1.3s infinite; }
.card.sk { min-height: 150px; }
@keyframes shimmer { from { background-position: 180% 0; } to { background-position: -80% 0; } }

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media (max-width: 720px) {
  .hero { padding: 34px 0 22px; }
  .stat b { font-size: 23px; }
  .toolbar { position: static; }
  .chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
  .chips::-webkit-scrollbar { display: none; }
  .totop { right: 14px; bottom: 18px; }
}

/* ---------- Translate / i18n chrome (added for EN-primary site) ---------- */
.hero-lang-links { display: flex; gap: 10px; align-items: center; }
.hero-lang-links a {
  font: 600 12px/1 var(--mono); letter-spacing: .04em;
  color: var(--muted); text-decoration: none; padding: 6px 12px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--panel);
  transition: color .15s, border-color .15s, transform .15s;
}
.hero-lang-links a:hover { color: var(--fg); border-color: var(--accent); transform: translateY(-1px); }
.tagline-zh {
  margin: -18px 0 22px; color: var(--muted); font-size: 13.5px;
  max-width: 720px; opacity: .85; line-height: 1.6;
}
.btn-translate { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }

/* ---------- 两条产品线（首页）：场景技能包 × 专家团 ---------- */
.lines { padding: 4px 0 18px; }
.lines-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.line-card {
  position: relative; display: flex; flex-direction: column; gap: 7px;
  padding: 20px 22px 22px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); box-shadow: var(--shadow); overflow: hidden;
}
.line-card::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2)); opacity: .85;
}
.line-tag { font: 600 11px/1.6 var(--mono); letter-spacing: .09em; color: var(--muted); }
.line-card h2 { margin: 0; font-size: 18px; letter-spacing: .01em; }
.line-card p { margin: 0; color: var(--muted); font-size: 13.6px; line-height: 1.65; }
.line-card p b { color: var(--text); }
.line-meta { font-size: 12.4px !important; }
.line-card .btn { align-self: flex-start; margin-top: 8px; }
@media (max-width: 760px) { .lines-grid { grid-template-columns: 1fr; } }