/* ============================================================
   AIDC Developer —— /developer 与 /developer/playground 共用。
   只补 site.css 没有的三样：作品截图框、项目档案、像素图网格；其余一律复用 site.css。
   像素图（原画像素版）放大时用最近邻，保持像素边缘。
   ============================================================ */

.dv-icon { display: block; width: 64px; height: 64px; margin-bottom: 1.4rem; }

/* 截图框：图 + 说明 */
.dv-shot { display: flex; flex-direction: column; margin: 0; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; background: #07060b; transition: border-color .2s var(--ease); }
a.dv-shot:hover { border-color: color-mix(in srgb, var(--ink-strong) 26%, transparent); }
.dv-shot img { display: block; width: 100%; height: auto; }
.dv-shot figcaption { flex: 1; padding: 0.95rem 1.15rem 1.05rem; border-top: 1px solid var(--line); background: var(--bg); font-size: 0.9rem; line-height: 1.65; color: var(--mut); }
.dv-shot figcaption b { color: var(--ink-strong); font-weight: 600; margin-right: 0.6em; }

/* 项目档案：左图右文 */
.dv-project { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
.dv-project .dv-idx { display: block; margin-bottom: 0.9rem; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; color: var(--signal); }
.dv-project h3 { margin: 0 0 0.9rem; font-size: clamp(1.5rem, 2.4vw, 2rem); letter-spacing: -0.02em; }
.dv-project p { margin: 0; color: var(--mut); }
.dv-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 1.6rem 0 1.2rem; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.dv-facts div { padding: 0.8rem 0.95rem 0.85rem; background: var(--bg); }
.dv-facts b { display: block; font-family: var(--font-display); font-size: 1.45rem; font-weight: 800; letter-spacing: -0.01em; color: var(--ink-strong); }
.dv-facts span { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mut); }
.dv-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 1.8rem; padding: 0; list-style: none; }
.dv-tags li { padding: 0.28rem 0.7rem; border: 1px solid var(--line); border-radius: var(--radius-full); font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; color: var(--mut); }
.dv-project p.dv-note { margin-top: 1.4rem; font-size: 0.8rem; line-height: 1.7; color: var(--mut-2); }

/* 网格 */
.dv-grid { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dv-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dv-grid--3 img { aspect-ratio: 4 / 3; object-fit: contain; }   /* 精灵表比例各异，统一成 4:3 暗底陈列 */
.dv-gallery { display: grid; gap: 12px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.dv-gallery a:nth-child(-n+2) { grid-column: span 2; }   /* 前两张放大：2 + 12 张正好排满 */
.dv-gallery a { display: block; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; background: #07060b; transition: border-color .2s var(--ease); }
.dv-gallery a:hover { border-color: var(--signal); }
.dv-gallery img { display: block; width: 100%; height: auto; image-rendering: pixelated; }
.dv-gallery span { display: block; padding: 0.7rem 0.95rem 0.8rem; border-top: 1px solid var(--line); background: var(--bg); font-size: 0.86rem; color: var(--ink); }

@media (max-width: 980px) {
  .dv-project { grid-template-columns: 1fr; }
  .dv-grid--3, .dv-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .dv-grid, .dv-grid--3 { grid-template-columns: 1fr; }
  .dv-facts { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   /developer 首页（SDK · 发布 · 智能体）与 /developer/docs 文档页
   ============================================================ */

/* 子导航：Apple Developer 式的页内分区条 */
.dv-subnav { position: sticky; top: var(--nav-h, 64px); z-index: 40; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line-soft); }
.dv-subnav .wrap { display: flex; align-items: center; gap: 22px; height: 48px; overflow-x: auto; scrollbar-width: none; }
.dv-subnav b { flex: none; font-size: 0.95rem; color: var(--ink-strong); margin-right: 6px; }
.dv-subnav a { flex: none; font-size: 0.86rem; color: var(--mut); text-decoration: none; }
.dv-subnav a:hover { color: var(--ink-strong); }
.sec[id] { scroll-margin-top: calc(var(--nav-h, 64px) + 48px); }
.dv-subnav a.dv-cta { margin-left: auto; padding: 0.3rem 0.85rem; border-radius: var(--radius-full); background: var(--ink-strong); color: var(--bg); }

/* 代码行 */
.dv-code { position: relative; display: block; margin: 0; padding: 1rem 1.15rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--bg-2); font-family: var(--font-mono); font-size: 0.84rem; line-height: 1.75; color: var(--ink); overflow-x: auto; white-space: pre; }
.dv-code .c { color: var(--mut-2); }
.dv-code .k { color: var(--signal); }
.dv-install { display: flex; align-items: center; gap: 10px; max-width: 640px; margin-top: 2rem; padding: 0.7rem 0.9rem 0.7rem 1.1rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--bg-2); font-family: var(--font-mono); font-size: 0.86rem; color: var(--ink-strong); }
.dv-install code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; background: none; border: 0; padding: 0; }
.dv-install span { color: var(--signal); }
.dv-copy { flex: none; height: 30px; padding: 0 0.7rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); color: var(--mut); font-family: var(--font-mono); font-size: 0.72rem; cursor: pointer; }
.dv-copy:hover { color: var(--ink-strong); }

/* 开发 → 测试 → 发布 */
.dv-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; }
.dv-flow > div { padding: 1.6rem 1.5rem 1.7rem; background: var(--bg); }
.dv-flow .dv-step { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em; color: var(--signal); }
.dv-flow h3 { margin: 0.6rem 0 0.5rem; font-size: 1.3rem; letter-spacing: -0.01em; }
.dv-flow p { margin: 0; color: var(--mut); font-size: 0.95rem; line-height: 1.7; }
.dv-flow code { font-size: 0.8rem; }

/* SDK 卡片 */
.dv-sdks { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.dv-sdk { display: flex; flex-direction: column; gap: 0.55rem; padding: 1.4rem 1.35rem 1.3rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--bg); color: inherit; text-decoration: none; transition: border-color .2s var(--ease), background .2s var(--ease); }
.dv-sdk:hover { border-color: color-mix(in srgb, var(--ink-strong) 24%, transparent); background: var(--bg-2); }
.dv-sdk svg { width: 30px; height: 30px; fill: none; stroke: var(--signal); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.dv-sdk h3 { margin: 0.35rem 0 0; font-size: 1.12rem; }
.dv-sdk p { margin: 0; color: var(--mut); font-size: 0.9rem; line-height: 1.65; }
.dv-sdk code { margin-top: auto; padding-top: 0.6rem; font-size: 0.74rem; color: var(--mut-2); background: none; border: 0; }

/* 样板应用 */
.dv-apps { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dv-app { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; background: var(--bg); }
.dv-app img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: top; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.dv-app div { display: flex; flex-direction: column; gap: 0.5rem; flex: 1; padding: 1.2rem 1.25rem 1.3rem; }
.dv-app h3 { margin: 0; font-size: 1.15rem; }
.dv-app p { margin: 0; color: var(--mut); font-size: 0.9rem; line-height: 1.65; }
.dv-app .dv-uses { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; color: var(--mut-2); }
.dv-app .btn-row { margin-top: auto; padding-top: 0.6rem; display: flex; flex-wrap: wrap; gap: 8px; }
.dv-app .btn { height: 34px; padding: 0 0.9rem; font-size: 0.82rem; }

/* 两列：说明 + 代码 */
.dv-split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
.dv-list { margin: 1.4rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.7rem; }
.dv-list li { padding-left: 1.2rem; position: relative; color: var(--mut); line-height: 1.65; }
.dv-list li::before { content: "//"; position: absolute; left: 0; font-family: var(--font-mono); font-size: 0.72rem; color: var(--signal); top: 0.18rem; }
.dv-list a { color: var(--ink-strong); }

@media (max-width: 980px) {
  .dv-apps { grid-template-columns: 1fr; }
  .dv-app img { aspect-ratio: 16 / 10; }
  .dv-split { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .dv-flow { grid-template-columns: 1fr; }
}

/* ---------- /developer/docs：Markdown 文档页 ---------- */
.dvd-shell { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 0; max-width: 1240px; margin: 0 auto; }
.dvd-side { position: sticky; top: var(--nav-h, 64px); align-self: start; max-height: calc(100vh - var(--nav-h, 64px)); overflow-y: auto; padding: 2rem 1.2rem 2rem 1.5rem; border-right: 1px solid var(--line-soft); }
.dvd-home { display: flex; align-items: center; gap: 8px; margin-bottom: 1.4rem; font-weight: 600; color: var(--ink-strong); text-decoration: none; }
.dvd-group { margin-bottom: 1.2rem; }
.dvd-gt { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mut-2); margin-bottom: 0.4rem; }
.dvd-side a:not(.dvd-home) { display: block; padding: 0.3rem 0.6rem; border-radius: var(--radius); color: var(--mut); font-size: 0.88rem; text-decoration: none; }
.dvd-side a:not(.dvd-home):hover { color: var(--ink-strong); background: var(--bg-2); }
.dvd-side a.on { color: var(--ink-strong); background: var(--bg-3); font-weight: 600; }
.dvd-meta { margin-top: 1.6rem; font-family: var(--font-mono); font-size: 0.68rem; color: var(--mut-2); }
.dvd-main { min-width: 0; padding: 2.4rem clamp(20px, 4vw, 64px) 5rem; max-width: 900px; }
.dvd-main h1 { font-size: clamp(2rem, 4vw, 2.6rem); letter-spacing: -0.02em; margin: 0 0 1rem; }
.dvd-main h2 { font-size: 1.45rem; margin: 2.6rem 0 0.9rem; padding-top: 1.4rem; border-top: 1px solid var(--line-soft); }
.dvd-main h3 { font-size: 1.12rem; margin: 1.8rem 0 0.6rem; }
.dvd-main p, .dvd-main li { color: var(--ink); line-height: 1.8; }
.dvd-main a { color: var(--signal); }
.dvd-main blockquote { margin: 1.2rem 0; padding: 0.2rem 1.1rem; border-left: 3px solid var(--signal); color: var(--mut); }
.dvd-main pre { margin: 1.1rem 0; padding: 1rem 1.15rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--bg-2); overflow-x: auto; }
.dvd-main pre code { padding: 0; border: 0; background: none; font-size: 0.82rem; line-height: 1.7; color: var(--ink); }
.dvd-main :not(pre) > code { font-size: 0.84em; }
.dvd-main table { width: 100%; margin: 1.1rem 0; border-collapse: collapse; font-size: 0.9rem; display: block; overflow-x: auto; }
.dvd-main th, .dvd-main td { padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
.dvd-main th { font-weight: 600; color: var(--ink-strong); border-bottom-color: var(--line); white-space: nowrap; }
.dvd-raw { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line-soft); font-size: 0.82rem; color: var(--mut-2) !important; }
.dvd-main .hljs-keyword, .dvd-main .hljs-built_in, .dvd-main .hljs-literal { color: #c2410c; }
.dvd-main .hljs-string, .dvd-main .hljs-attr { color: #15803d; }
.dvd-main .hljs-comment { color: var(--mut-2); font-style: italic; }
.dvd-main .hljs-number, .dvd-main .hljs-title { color: #1d4ed8; }
[data-theme="dark"] .dvd-main .hljs-keyword { color: #fb923c; }
[data-theme="dark"] .dvd-main .hljs-string, [data-theme="dark"] .dvd-main .hljs-attr { color: #86efac; }
[data-theme="dark"] .dvd-main .hljs-number, [data-theme="dark"] .dvd-main .hljs-title { color: #93c5fd; }
@media (max-width: 900px) {
  .dvd-shell { grid-template-columns: 1fr; }
  .dvd-side { position: static; max-height: none; border-right: 0; border-bottom: 1px solid var(--line-soft); padding: 1.2rem 16px; display: flex; flex-wrap: wrap; gap: 4px 14px; }
  .dvd-home { width: 100%; margin-bottom: 0.4rem; }
  .dvd-group { margin: 0; display: contents; }
  .dvd-gt { display: none; }
  .dvd-side a:not(.dvd-home) { padding: 0.2rem 0; }
  .dvd-meta { display: none; }
  .dvd-main { padding: 1.6rem 16px 4rem; }
}