/* ============================================================
   千问 AI 平台 · Go Live 创造营 教程站
   纯静态 · 无构建 · 无外部依赖
   配色取自活动主视觉：淡紫底 + 紫色主色
   ============================================================ */

:root {
  --bg: #f5f3ff;
  --bg-2: #ede9fe;
  --surface: #ffffff;
  --surface-2: #faf9ff;
  --primary: #6d4cf3;
  --primary-2: #8b6bff;
  --primary-deep: #4b2fd1;
  --primary-soft: #efeaff;
  --text: #1e1b2e;
  --text-2: #4a4763;
  --muted: #6f6c86;
  --border: #e6e1fa;
  --border-2: #d6cff5;
  --ok: #15803d;
  --ok-bg: #ecfdf3;
  --ok-border: #bbf7d0;
  --warn: #b45309;
  --warn-bg: #fff7e6;
  --warn-border: #fde3b0;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --code-bg: #1e1b2e;
  --code-text: #f1efff;
  --shadow: 0 6px 24px rgba(77, 52, 180, 0.08);
  --shadow-lg: 0 14px 40px rgba(77, 52, 180, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --sidebar-w: 272px;
  --topbar-h: 60px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 1.4em; }
li { margin: 4px 0; }
li > ul, li > ol { margin: 4px 0 0; }
strong, b { font-weight: 700; color: var(--text); }
hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }
kbd, .kbd {
  font-family: var(--mono); font-size: 0.85em; padding: 1px 6px;
  border: 1px solid var(--border-2); border-bottom-width: 2px; border-radius: 6px;
  background: #fff; color: var(--text-2);
}
code {
  font-family: var(--mono); font-size: 0.88em;
  background: var(--primary-soft); color: var(--primary-deep);
  padding: 2px 6px; border-radius: 6px;
}
pre code { background: none; color: inherit; padding: 0; font-size: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 20px;
  background: rgba(255,255,255,0.86);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); white-space: nowrap; }
.topbar .brand .dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), #b39dff); }
.topbar .brand small { font-weight: 500; color: var(--muted); font-size: 12px; }
.topbar .spacer { flex: 1; }
.topbar .menu-btn { display: none; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border-2);
  background: #fff; color: var(--text-2); font-size: 13px; font-weight: 600;
  cursor: pointer; white-space: nowrap; line-height: 1.2; font-family: inherit;
  transition: all .15s ease;
}
.btn:hover { border-color: var(--primary-2); color: var(--primary-deep); background: var(--primary-soft); text-decoration: none; }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; border-color: transparent; }
.btn.primary:hover { filter: brightness(1.05); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn svg { width: 14px; height: 14px; }

/* ---------- 布局 ---------- */
.layout { display: flex; max-width: 1240px; margin: 0 auto; }
.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto; padding: 22px 14px 40px 20px;
  border-right: 1px solid var(--border);
  background: transparent;
}
.sidebar .group { margin-bottom: 18px; }
.sidebar .group-title { font-size: 11px; font-weight: 700; letter-spacing: .08em; color: var(--muted); text-transform: uppercase; padding: 0 10px 6px; }
.sidebar a.nav-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: 10px; color: var(--text-2); font-size: 14px;
  border-left: 3px solid transparent;
}
.sidebar a.nav-item:hover { background: var(--primary-soft); text-decoration: none; color: var(--primary-deep); }
.sidebar a.nav-item.active { background: var(--primary-soft); color: var(--primary-deep); border-left-color: var(--primary); font-weight: 600; }
.sidebar a.nav-item .n {
  width: 22px; height: 22px; flex: 0 0 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; background: #fff; border: 1px solid var(--border-2); color: var(--muted);
}
.sidebar a.nav-item.done .n { background: var(--ok); border-color: var(--ok); color: #fff; }
.sidebar a.nav-item.done .n::before { content: "✓"; }
.sidebar a.nav-item.done .n span { display: none; }
.sidebar .progress { margin: 6px 10px 14px; }
.sidebar .progress .bar { height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; }
.sidebar .progress .bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--primary-2)); transition: width .3s ease; }
.sidebar .progress .txt { font-size: 12px; color: var(--muted); margin-top: 6px; }

main.doc { flex: 1; min-width: 0; padding: 28px 40px 100px; max-width: 900px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  border-radius: 24px; padding: 34px 300px 34px 36px;
  background: linear-gradient(135deg, #f1edff 0%, #e6e0ff 45%, #dcd3ff 100%);
  border: 1px solid var(--border-2);
  box-shadow: var(--shadow);
  margin-bottom: 26px;
}
.hero .eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--primary-deep); background: rgba(255,255,255,.7); padding: 5px 12px; border-radius: 999px; border: 1px solid #fff; }
.hero h1 { font-size: 34px; margin: 14px 0 8px; color: var(--text); }
.hero h1 em { font-style: normal; color: var(--primary); }
.hero .sub { font-size: 16px; color: var(--text-2); max-width: 560px; }
.hero .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.hero .chip { font-size: 13px; padding: 5px 12px; border-radius: 999px; background: rgba(255,255,255,.75); border: 1px solid #fff; color: var(--text-2); }
.hero .chip b { color: var(--primary-deep); }
.hero .kv { position: absolute; right: -10px; top: -10px; width: 300px; opacity: .95; mask-image: linear-gradient(90deg, transparent, #000 25%); -webkit-mask-image: linear-gradient(90deg, transparent, #000 25%); }
.hero .kv img { border-radius: 20px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

/* ---------- 通用区块 ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow);
  margin: 0 0 18px;
}
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; margin: 44px 0 14px; flex-wrap: wrap; }
.section-head h2 { font-size: 26px; }
.section-head .lead { color: var(--muted); font-size: 14px; margin-top: 4px; }
.module-badge { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .06em; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2)); padding: 3px 10px; border-radius: 999px; margin-bottom: 8px; }
.h-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- 步骤 ---------- */
.step {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 24px 26px 18px; margin: 0 0 22px; box-shadow: var(--shadow);
  scroll-margin-top: calc(var(--topbar-h) + 14px);
}
.step.done { border-color: var(--ok-border); }
.step-head { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.step-num {
  flex: 0 0 44px; width: 44px; height: 44px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 6px 16px rgba(109,76,243,.3);
}
.step.done .step-num { background: linear-gradient(135deg, #16a34a, #22c55e); box-shadow: 0 6px 16px rgba(22,163,74,.25); }
.step-title { flex: 1; min-width: 0; }
.step-title h3 { font-size: 21px; }
.step-title .meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.step-title .meta span { font-size: 12px; color: var(--muted); background: var(--surface-2); border: 1px solid var(--border); padding: 2px 9px; border-radius: 999px; }
.step-tools { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.step-check { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); cursor: pointer; user-select: none; white-space: nowrap; }
.step-check input { width: 16px; height: 16px; accent-color: var(--ok); cursor: pointer; }
.step h4 { font-size: 16.5px; margin: 20px 0 8px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.step h4::before { content: ""; width: 6px; height: 18px; border-radius: 3px; background: linear-gradient(180deg, var(--primary), var(--primary-2)); }
.step h4 .h4-copy { margin-left: auto; }

/* ---------- 提示框 ---------- */
.note {
  display: flex; gap: 12px; align-items: flex-start;
  border: 1px solid var(--border); background: var(--surface-2);
  border-radius: 12px; padding: 12px 14px; margin: 12px 0;
  font-size: 15px;
}
.note .ico { flex: 0 0 auto; font-size: 18px; line-height: 1.4; }
.note .body { flex: 1; min-width: 0; }
.note .body p:last-child { margin-bottom: 0; }
.note .body ul:last-child, .note .body ol:last-child { margin-bottom: 0; }
.note.tip { background: var(--primary-soft); border-color: #d9d0ff; }
.note.ok { background: var(--ok-bg); border-color: var(--ok-border); }
.note.ok b:first-child { color: var(--ok); }
.note.warn { background: var(--warn-bg); border-color: var(--warn-border); }
.note.warn b:first-child { color: var(--warn); }
.note.danger { background: var(--danger-bg); border-color: var(--danger-border); }
.note.danger b:first-child { color: var(--danger); }
.note.done-box { background: linear-gradient(135deg, #f1edff, #e9e3ff); border-color: #d6cbff; font-weight: 600; }

/* ---------- 代码 / 提示词块 ---------- */
.codeblock { position: relative; margin: 12px 0 16px; border-radius: 14px; overflow: hidden; border: 1px solid #2b2745; background: var(--code-bg); box-shadow: 0 8px 22px rgba(30,27,46,.18); }
.codeblock .cb-head { display: flex; align-items: center; gap: 8px; padding: 7px 10px 7px 14px; background: #2a2645; color: #cfc8ff; font-size: 12px; font-weight: 600; letter-spacing: .04em; }
.codeblock .cb-head .lang { text-transform: uppercase; opacity: .85; }
.codeblock .cb-head .lbl { color: #b8adff; font-weight: 500; opacity: .9; }
.codeblock .cb-head .spacer { flex: 1; }
.codeblock pre { margin: 0; padding: 14px 16px; overflow-x: auto; color: var(--code-text); font-family: var(--mono); font-size: 13.5px; line-height: 1.65; tab-size: 2; }
.codeblock.prompt { border-color: #cbbcff; background: #fbfaff; box-shadow: var(--shadow); }
.codeblock.prompt .cb-head { background: linear-gradient(90deg, #efeaff, #f6f2ff); color: var(--primary-deep); }
.codeblock.prompt .cb-head .lbl { color: var(--primary-deep); }
.codeblock.prompt pre { color: var(--text); font-family: var(--font); font-size: 15px; white-space: pre-wrap; word-break: break-word; }
.copy-btn {
  display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.08); color: #e9e5ff;
  font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit; line-height: 1.4;
}
.copy-btn:hover { background: rgba(255,255,255,.16); }
.copy-btn.copied { background: #22c55e; border-color: #22c55e; color: #fff; }
.codeblock.prompt .copy-btn { border-color: var(--border-2); background: #fff; color: var(--primary-deep); }
.codeblock.prompt .copy-btn:hover { background: var(--primary-soft); }
.codeblock.prompt .copy-btn.copied { background: #22c55e; border-color: #22c55e; color: #fff; }
.copy-btn svg { width: 13px; height: 13px; }

/* ---------- 图片 ---------- */
figure { margin: 16px 0 20px; }
figure .frame { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); background: #fff; box-shadow: var(--shadow); cursor: zoom-in; }
figure img { width: 100%; }
figure figcaption { font-size: 13.5px; color: var(--muted); margin-top: 8px; line-height: 1.6; padding: 0 4px; }
figure figcaption b { color: var(--text-2); }
figure.shot .frame { background: #f3f1fb; }
figure.info .frame { border-color: #d9d0ff; }
figure.small { max-width: 520px; }
.fig-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fig-row figure { margin: 8px 0 12px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; margin: 12px 0 16px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: var(--surface-2); color: var(--text-2); font-weight: 700; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

/* ---------- 流程时间轴 ---------- */
.timeline { list-style: none; padding: 0; margin: 8px 0 0; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.timeline li:last-child { border-bottom: 0; }
.timeline .t { font-family: var(--mono); font-size: 13px; color: var(--primary-deep); font-weight: 700; padding-top: 2px; }
.timeline li.hl { background: var(--primary-soft); border-radius: 10px; padding: 8px 10px; margin: 0 -10px; }

/* ---------- 网格卡 ---------- */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 12px 0 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 12px 0 16px; }
.grid2 > *, .grid3 > *, .fig-row > * { min-width: 0; }
.mini .codeblock { margin: 8px 0 10px; }
.mini {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px;
}
.mini h5 { margin: 0 0 6px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.mini p { font-size: 14px; color: var(--text-2); margin: 0; }
.mini ul { font-size: 14px; color: var(--text-2); margin: 0; }
.mini .big { font-size: 26px; font-weight: 800; color: var(--primary); line-height: 1.1; }

/* ---------- 折叠 ---------- */
details { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); padding: 0 14px; margin: 10px 0; }
details summary { cursor: pointer; padding: 10px 0; font-weight: 600; color: var(--text-2); list-style: none; display: flex; align-items: center; gap: 8px; }
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▸"; color: var(--primary); transition: transform .15s; }
details[open] summary::before { transform: rotate(90deg); }
details .d-body { padding: 4px 0 12px; }

/* ---------- 底部 ---------- */
footer.site-foot { text-align: center; color: var(--muted); font-size: 13px; padding: 40px 20px 60px; }
footer.site-foot a { color: var(--primary-deep); }

/* ---------- Toast / Lightbox ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
  background: #1e1b2e; color: #fff; padding: 10px 18px; border-radius: 999px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: all .2s ease; z-index: 100; box-shadow: var(--shadow-lg);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.lightbox { position: fixed; inset: 0; background: rgba(20,16,40,.86); display: none; align-items: center; justify-content: center; z-index: 200; padding: 24px; cursor: zoom-out; }
.lightbox.show { display: flex; }
.lightbox img { max-width: 96vw; max-height: 90vh; width: auto; height: auto; border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,.5); background: #fff; }
.lightbox .cap { position: absolute; left: 0; right: 0; bottom: 14px; text-align: center; color: #e9e5ff; font-size: 13px; padding: 0 20px; }

/* ---------- 顶部返回 ---------- */
.to-top { position: fixed; right: 22px; bottom: 22px; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border-2); background: #fff; color: var(--primary-deep); box-shadow: var(--shadow); cursor: pointer; display: none; align-items: center; justify-content: center; font-size: 18px; z-index: 40; }
.to-top.show { display: flex; }

/* ---------- 打印 ---------- */
@media print {
  .topbar, .sidebar, .copy-btn, .step-check, .h-actions, .to-top, .hero .actions { display: none !important; }
  main.doc { padding: 0; max-width: none; }
  .step, .card { box-shadow: none; break-inside: avoid; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero .kv { display: none; }
  .hero { padding-right: 36px; }
}
@media (max-width: 900px) {
  .topbar .menu-btn { display: inline-flex; }
  .topbar .brand small { display: none; }
  .layout { display: block; }
  .sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0; z-index: 45;
    height: auto; width: min(320px, 86vw); background: #fff; box-shadow: var(--shadow-lg);
    transform: translateX(-105%); transition: transform .2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  main.doc { padding: 18px 16px 90px; }
  .hero { padding: 24px 20px; }
  .hero h1 { font-size: 26px; }
  .step { padding: 18px 16px 12px; border-radius: 16px; }
  .step-head { flex-wrap: wrap; }
  .step-tools { width: 100%; justify-content: flex-start; }
  .grid2, .grid3, .fig-row { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 96px 1fr; }
  .section-head h2 { font-size: 22px; }
  .topbar .btn .t { display: none; }
  .topbar { padding: 0 12px; gap: 8px; }
  .topbar [data-copy-link], .topbar [data-download-md] { display: none; }
  body { overflow-x: hidden; }
}