/* ============================================================
 * style.css - OpenTapTap Resource 自定义样式
 * Tailwind CDN 处理大部分布局；本文件补充组件级视觉与暗色主题
 * ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --ott-bg: #0b0f17;
  --ott-bg-soft: #111827;
  --ott-surface: #151c2b;
  --ott-surface-2: #1c2435;
  --ott-border: #232c42;
  --ott-border-soft: #1a2236;
  --ott-text: #e6edf7;
  --ott-text-dim: #9aa7bd;
  --ott-text-mute: #6b7793;
  --ott-accent: #2dd4bf; /* 青绿 */
  --ott-accent-2: #f59e0b; /* 琥珀 */
  --ott-accent-3: #818cf8; /* 靛蓝 */
  --ott-danger: #f87171;
  --ott-radius: 14px;
  --ott-radius-sm: 8px;
  --ott-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  --ott-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

html.light {
  --ott-bg: #f6f8fc;
  --ott-bg-soft: #eef2f9;
  --ott-surface: #ffffff;
  --ott-surface-2: #f3f6fb;
  --ott-border: #e2e8f0;
  --ott-border-soft: #eef2f7;
  --ott-text: #0f172a;
  --ott-text-dim: #475569;
  --ott-text-mute: #94a3b8;
  --ott-shadow: 0 10px 30px -16px rgba(15, 23, 42, 0.25);
}

/* ---------- 基础 ---------- */
html {
  scroll-behavior: smooth;
}
body {
  background: var(--ott-bg);
  color: var(--ott-text);
  font-family: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 背景氛围：渐变 + 网格 */
.ott-bg-deco {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(45, 212, 191, 0.10), transparent 60%),
    radial-gradient(700px 400px at 5% 5%, rgba(129, 140, 248, 0.08), transparent 60%),
    linear-gradient(180deg, var(--ott-bg) 0%, var(--ott-bg-soft) 100%);
}
.ott-bg-deco::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 80%);
}
html.light .ott-bg-deco::after {
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
}

/* ---------- 顶栏 ---------- */
.ott-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--ott-bg) 78%, transparent);
  border-bottom: 1px solid var(--ott-border-soft);
}
.ott-nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.7rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.ott-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ott-text);
}
.ott-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--ott-accent), var(--ott-accent-3));
  color: #061018;
  font-weight: 800;
  font-family: var(--ott-mono);
  box-shadow: 0 6px 18px -6px rgba(45, 212, 191, 0.6);
}
.ott-brand-name {
  font-family: "Unbounded", "Sora", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.ott-brand-sub {
  font-size: 0.72rem;
  color: var(--ott-text-mute);
  font-family: var(--ott-mono);
}
.ott-nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}
.ott-nav-links a {
  color: var(--ott-text-dim);
  text-decoration: none;
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: color 0.15s, background 0.15s;
}
.ott-nav-links a:hover {
  color: var(--ott-text);
  background: var(--ott-surface-2);
}
.ott-nav-links a.is-active {
  color: var(--ott-accent);
}
.ott-theme-btn {
  margin-left: 0.5rem;
  border: 1px solid var(--ott-border);
  background: var(--ott-surface);
  color: var(--ott-text-dim);
  width: 36px;
  height: 36px;
  border-radius: 9px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color 0.15s, border-color 0.15s;
}
.ott-theme-btn:hover {
  color: var(--ott-accent-2);
  border-color: var(--ott-accent-2);
}

/* ---------- 头部区域 ---------- */
.ott-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.25rem;
}
.ott-hero h1 {
  font-family: "Unbounded", "Sora", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}
.ott-hero h1 .ott-grad {
  background: linear-gradient(120deg, var(--ott-accent), var(--ott-accent-3) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ott-hero p {
  color: var(--ott-text-dim);
  margin: 0.6rem 0 0;
  font-size: 1rem;
}
.ott-hero .ott-kbd {
  font-family: var(--ott-mono);
  color: var(--ott-accent-2);
}

/* ---------- 搜索框 ---------- */
.ott-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--ott-surface);
  border: 1px solid var(--ott-border);
  border-radius: 12px;
  padding: 0.5rem 0.6rem 0.5rem 0.9rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  max-width: 560px;
}
.ott-search:focus-within {
  border-color: var(--ott-accent);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15);
}
.ott-search svg {
  flex: none;
  color: var(--ott-text-mute);
}
.ott-search input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--ott-text);
  font-size: 0.95rem;
  font-family: inherit;
}
.ott-search input::placeholder {
  color: var(--ott-text-mute);
}
.ott-search button {
  border: 0;
  background: linear-gradient(135deg, var(--ott-accent), var(--ott-accent-3));
  color: #061018;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: 9px;
  cursor: pointer;
  font-size: 0.9rem;
}
.ott-search button:hover {
  filter: brightness(1.08);
}

/* ---------- 布局 ---------- */
.ott-layout {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.5rem;
  align-items: start;
}
.ott-sidebar {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
  padding-right: 0.25rem;
}
.ott-sidebar::-webkit-scrollbar {
  width: 6px;
}
.ott-sidebar::-webkit-scrollbar-thumb {
  background: var(--ott-border);
  border-radius: 4px;
}
.ott-main {
  min-width: 0;
}
.ott-section-title {
  font-family: var(--ott-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ott-text-mute);
  margin: 0 0 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.ott-section-title::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ott-accent);
  box-shadow: 0 0 8px var(--ott-accent);
}
.ott-panel {
  background: var(--ott-surface);
  border: 1px solid var(--ott-border-soft);
  border-radius: var(--ott-radius);
  padding: 1rem;
}

/* ---------- 分类树 ---------- */
.ott-cat-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.ott-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--ott-text-dim);
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: background 0.12s, color 0.12s;
}
.ott-cat-item:hover {
  background: var(--ott-surface-2);
  color: var(--ott-text);
}
.ott-cat-item .ott-num {
  font-family: var(--ott-mono);
  font-size: 0.72rem;
  color: var(--ott-text-mute);
  background: var(--ott-bg-soft);
  border: 1px solid var(--ott-border-soft);
  padding: 0.05rem 0.4rem;
  border-radius: 999px;
}

/* ---------- 标签云 ---------- */
.ott-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.ott-cloud-tag {
  text-decoration: none;
  color: var(--ott-text-dim);
  background: var(--ott-surface-2);
  border: 1px solid var(--ott-border-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  transition: all 0.12s;
}
.ott-cloud-tag:hover {
  color: var(--ott-accent);
  border-color: var(--ott-accent);
  transform: translateY(-1px);
}
.ott-cloud-lg {
  font-size: 0.92rem;
  color: var(--ott-text);
  background: color-mix(in srgb, var(--ott-accent) 14%, var(--ott-surface-2));
  border-color: color-mix(in srgb, var(--ott-accent) 35%, var(--ott-border));
}
.ott-cloud-md {
  color: var(--ott-text);
}

/* ---------- 卡片网格 ---------- */
.ott-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.ott-card {
  background: var(--ott-surface);
  border: 1px solid var(--ott-border-soft);
  border-radius: var(--ott-radius);
  overflow: hidden;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
  position: relative;
  display: flex;
  flex-direction: column;
}
.ott-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--ott-accent) 45%, var(--ott-border));
  box-shadow: var(--ott-shadow);
}
.ott-card-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.ott-card-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(135deg, var(--ott-surface-2), var(--ott-bg-soft))
    center / cover;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.ott-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s;
}
.ott-card:hover .ott-card-thumb img {
  transform: scale(1.04);
}
.ott-card-thumb.ott-noimg::after {
  content: "无预览";
  color: var(--ott-text-mute);
  font-family: var(--ott-mono);
  font-size: 0.8rem;
}
.ott-card-thumb.ott-noimg img {
  display: none;
}
.ott-card-badge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: rgba(6, 16, 24, 0.78);
  color: var(--ott-accent-2);
  font-family: var(--ott-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  border: 1px solid rgba(245, 158, 11, 0.4);
}
.ott-card-body {
  padding: 0.7rem 0.85rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
}
.ott-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0;
  line-height: 1.3;
  color: var(--ott-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ott-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--ott-text-mute);
  font-family: var(--ott-mono);
}
.ott-cat {
  color: var(--ott-accent-3);
}
.ott-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.ott-tag {
  font-size: 0.68rem;
  color: var(--ott-text-dim);
  background: var(--ott-surface-2);
  border: 1px solid var(--ott-border-soft);
  padding: 0.05rem 0.4rem;
  border-radius: 5px;
}
.ott-card-fmts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: auto;
}
.ott-fmt {
  font-family: var(--ott-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--ott-accent);
  background: color-mix(in srgb, var(--ott-accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--ott-accent) 28%, transparent);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}

/* ---------- 骨架屏 ---------- */
.ott-skeleton {
  pointer-events: none;
}
.ott-skeleton .ott-card-thumb,
.ott-sk-line {
  background: linear-gradient(
    90deg,
    var(--ott-surface-2) 25%,
    var(--ott-border) 37%,
    var(--ott-surface-2) 63%
  );
  background-size: 400% 100%;
  animation: ott-shimmer 1.4s ease infinite;
  border-radius: 6px;
}
.ott-sk-line {
  height: 10px;
  margin-bottom: 8px;
}
.ott-sk-line.w40 {
  width: 40%;
}
.ott-sk-line.w70 {
  width: 70%;
}
.ott-sk-line.w90 {
  width: 90%;
}
@keyframes ott-shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

/* ---------- 分页 ---------- */
.ott-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1.75rem;
}
.ott-page {
  min-width: 38px;
  height: 38px;
  padding: 0 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  font-size: 0.88rem;
  font-family: var(--ott-mono);
  color: var(--ott-text-dim);
  background: var(--ott-surface);
  border: 1px solid var(--ott-border-soft);
  text-decoration: none;
  transition: all 0.12s;
}
.ott-page:hover:not(.is-disabled):not(.is-current) {
  color: var(--ott-accent);
  border-color: var(--ott-accent);
}
.ott-page.is-current {
  color: #061018;
  background: linear-gradient(135deg, var(--ott-accent), var(--ott-accent-3));
  border-color: transparent;
  font-weight: 700;
}
.ott-page.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.ott-page.is-ellipsis {
  border: 0;
  background: transparent;
}

/* ---------- 通用面板 / 标签徽章 ---------- */
.ott-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: var(--ott-text-dim);
  background: var(--ott-surface-2);
  border: 1px solid var(--ott-border-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}
.ott-chip.is-accent {
  color: var(--ott-accent);
  border-color: color-mix(in srgb, var(--ott-accent) 40%, var(--ott-border));
}
.ott-chip.is-amber {
  color: var(--ott-accent-2);
  border-color: color-mix(in srgb, var(--ott-accent-2) 40%, var(--ott-border));
}
.ott-license-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--ott-mono);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--ott-accent-2);
  background: color-mix(in srgb, var(--ott-accent-2) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--ott-accent-2) 38%, transparent);
  padding: 0.25rem 0.6rem;
  border-radius: 8px;
}

/* ---------- 错误 / 空态 ---------- */
.ott-error {
  background: color-mix(in srgb, var(--ott-danger) 12%, var(--ott-surface));
  border: 1px solid color-mix(in srgb, var(--ott-danger) 38%, var(--ott-border));
  border-radius: var(--ott-radius);
  padding: 1rem 1.1rem;
  color: var(--ott-text);
}
.ott-error strong {
  color: var(--ott-danger);
}
.ott-empty {
  color: var(--ott-text-mute);
  font-size: 0.88rem;
  margin: 0;
}

/* ---------- Toast ---------- */
.ott-toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translate(-50%, 1.5rem);
  background: var(--ott-surface);
  color: var(--ott-text);
  border: 1px solid var(--ott-border);
  padding: 0.6rem 1rem;
  border-radius: 10px;
  font-size: 0.88rem;
  box-shadow: var(--ott-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 9999;
}
.ott-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}
.ott-toast.is-error {
  border-color: var(--ott-danger);
  color: var(--ott-danger);
}

/* ---------- 代码块 ---------- */
.ott-code {
  position: relative;
  background: var(--ott-bg-soft);
  border: 1px solid var(--ott-border-soft);
  border-radius: 10px;
  overflow: hidden;
}
.ott-code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--ott-border-soft);
  background: var(--ott-surface);
}
.ott-code-head .ott-code-lang {
  font-family: var(--ott-mono);
  font-size: 0.72rem;
  color: var(--ott-text-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ott-code-copy {
  border: 1px solid var(--ott-border);
  background: var(--ott-surface-2);
  color: var(--ott-text-dim);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s;
}
.ott-code-copy:hover {
  color: var(--ott-accent);
  border-color: var(--ott-accent);
}
.ott-code pre {
  margin: 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-family: var(--ott-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ott-text);
}
.ott-code pre code {
  font-family: inherit;
  color: inherit;
  background: transparent;
  white-space: pre;
}
/* 语法高亮（轻量） */
.tok-key {
  color: var(--ott-accent-3);
}
.tok-str {
  color: var(--ott-accent);
}
.tok-num {
  color: var(--ott-accent-2);
}
.tok-com {
  color: var(--ott-text-mute);
  font-style: italic;
}

/* ---------- 文件表格 ---------- */
.ott-file-toolbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.9rem;
}
.ott-filter-select,
.ott-filter-input {
  background: var(--ott-surface);
  border: 1px solid var(--ott-border);
  color: var(--ott-text);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
  font-size: 0.85rem;
  font-family: inherit;
}
.ott-filter-select:focus,
.ott-filter-input:focus {
  outline: 0;
  border-color: var(--ott-accent);
}
.ott-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ott-border-soft);
  border-radius: var(--ott-radius);
  background: var(--ott-surface);
}
.ott-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.ott-table thead th {
  text-align: left;
  font-family: var(--ott-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ott-text-mute);
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--ott-border-soft);
  background: var(--ott-surface-2);
  white-space: nowrap;
}
.ott-table tbody td {
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--ott-border-soft);
  color: var(--ott-text-dim);
  vertical-align: middle;
}
.ott-table tbody tr:last-child td {
  border-bottom: 0;
}
.ott-table tbody tr:hover {
  background: var(--ott-surface-2);
}
.ott-table .ott-fname {
  color: var(--ott-text);
  font-family: var(--ott-mono);
  font-size: 0.82rem;
}
.ott-table .ott-fpath {
  color: var(--ott-text-mute);
  font-family: var(--ott-mono);
  font-size: 0.76rem;
}
.ott-table .ott-ext {
  font-family: var(--ott-mono);
  color: var(--ott-accent);
}
.ott-dl-link {
  color: var(--ott-accent);
  text-decoration: none;
  font-size: 0.8rem;
  font-family: var(--ott-mono);
  white-space: nowrap;
}
.ott-dl-link:hover {
  text-decoration: underline;
}
/* PNG 行悬停缩略图 */
.ott-thumb-pop {
  position: absolute;
  pointer-events: none;
  z-index: 60;
  width: 160px;
  height: 160px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--ott-border);
  background: var(--ott-bg-soft);
  box-shadow: var(--ott-shadow);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.12s, transform 0.12s;
}
.ott-thumb-pop img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.ott-thumb-pop.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 信息卡 ---------- */
.ott-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}
.ott-info-item {
  background: var(--ott-surface-2);
  border: 1px solid var(--ott-border-soft);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
}
.ott-info-item .ott-label {
  font-family: var(--ott-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ott-text-mute);
  display: block;
  margin-bottom: 0.25rem;
}
.ott-info-item .ott-value {
  color: var(--ott-text);
  font-weight: 600;
  font-family: var(--ott-mono);
}
.ott-notes {
  background: var(--ott-surface-2);
  border-left: 3px solid var(--ott-accent);
  border-radius: 0 8px 8px 0;
  padding: 0.7rem 0.9rem;
  color: var(--ott-text-dim);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* ---------- 预览大图 ---------- */
.ott-preview-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 0.75rem;
}
.ott-preview {
  background:
    repeating-conic-gradient(var(--ott-surface-2) 0 25%, var(--ott-bg-soft) 0 50%)
    50% / 24px 24px;
  border: 1px solid var(--ott-border-soft);
  border-radius: var(--ott-radius);
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 240px;
}
.ott-preview img {
  width: 100%;
  height: 100%;
  max-height: 360px;
  object-fit: contain;
}
.ott-preview-cap {
  font-family: var(--ott-mono);
  font-size: 0.7rem;
  color: var(--ott-text-mute);
  padding: 0.4rem 0.7rem;
  border-top: 1px solid var(--ott-border-soft);
  background: var(--ott-surface);
}

/* ---------- Agent 面板 ---------- */
.ott-agent-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}
.ott-form-group {
  margin-bottom: 0.9rem;
}
.ott-form-group label {
  display: block;
  font-family: var(--ott-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ott-text-mute);
  margin-bottom: 0.35rem;
}
.ott-check-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  max-height: 140px;
  overflow-y: auto;
  padding: 0.3rem;
  border: 1px solid var(--ott-border-soft);
  border-radius: 8px;
  background: var(--ott-surface-2);
}
.ott-check-grid label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--ott-text-dim);
  text-transform: none;
  letter-spacing: 0;
  margin: 0;
  cursor: pointer;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  background: var(--ott-surface);
  border: 1px solid var(--ott-border-soft);
}
.ott-check-grid label:hover {
  border-color: var(--ott-accent);
}
.ott-url-box {
  font-family: var(--ott-mono);
  font-size: 0.82rem;
  word-break: break-all;
  background: var(--ott-bg-soft);
  border: 1px solid var(--ott-border-soft);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  color: var(--ott-accent);
}
.ott-step {
  display: flex;
  gap: 0.85rem;
  padding: 0.9rem 0;
  border-bottom: 1px dashed var(--ott-border-soft);
}
.ott-step:last-child {
  border-bottom: 0;
}
.ott-step-num {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: var(--ott-mono);
  font-weight: 700;
  color: #061018;
  background: linear-gradient(135deg, var(--ott-accent), var(--ott-accent-3));
}
.ott-endpoint-card {
  border: 1px solid var(--ott-border-soft);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  background: var(--ott-surface);
  margin-bottom: 0.6rem;
}
.ott-endpoint-card .ott-ep-path {
  font-family: var(--ott-mono);
  color: var(--ott-accent);
  font-size: 0.86rem;
}
.ott-endpoint-card .ott-ep-method {
  font-family: var(--ott-mono);
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--ott-accent-2);
  background: color-mix(in srgb, var(--ott-accent-2) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--ott-accent-2) 36%, transparent);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  margin-right: 0.4rem;
}
.ott-endpoint-card .ott-ep-desc {
  color: var(--ott-text-dim);
  font-size: 0.84rem;
  margin-top: 0.3rem;
}

/* ---------- 页脚 ---------- */
.ott-footer {
  border-top: 1px solid var(--ott-border-soft);
  margin-top: 2.5rem;
  padding: 1.5rem 1.25rem;
  text-align: center;
  color: var(--ott-text-mute);
  font-size: 0.82rem;
}
.ott-footer a {
  color: var(--ott-text-dim);
  text-decoration: none;
}
.ott-footer a:hover {
  color: var(--ott-accent);
}

/* ============================================================
 * 响应式
 * ============================================================ */
@media (max-width: 1024px) {
  .ott-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .ott-layout {
    grid-template-columns: 220px 1fr;
  }
  .ott-agent-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .ott-layout {
    grid-template-columns: 1fr;
  }
  .ott-sidebar {
    position: static;
    max-height: none;
    flex-direction: column;
  }
  .ott-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ott-nav-links {
    gap: 0;
  }
  .ott-nav-links a {
    padding: 0.4rem 0.55rem;
    font-size: 0.84rem;
  }
  .ott-brand-sub {
    display: none;
  }
  .ott-preview-grid {
    grid-template-columns: 1fr;
  }
  .ott-info-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .ott-grid {
    grid-template-columns: 1fr;
  }
  .ott-hero {
    padding-top: 1.5rem;
  }
}