/* ====== 基础 ====== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #2c3e50;
  background: #fafbfc;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: #2c7be5; text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { line-height: 1.3; color: #1a2733; }
h1 { font-size: 1.8rem; margin: 0.5em 0; }
h2 { font-size: 1.3rem; margin: 1.5em 0 0.5em; }
h3 { font-size: 1.1rem; margin: 1.2em 0 0.4em; }
.container { max-width: 880px; margin: 0 auto; padding: 0 16px; width: 100%; }

/* ====== Header ====== */
.site-header {
  background: #fff;
  border-bottom: 1px solid #e5e9ee;
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
}
.logo {
  font-weight: 700; font-size: 1.15rem; color: #1a2733;
}
.logo:hover { text-decoration: none; }
.nav { display: flex; gap: 18px; align-items: center; }
.nav a { color: #4a5764; font-size: 0.95rem; }
.nav-cta {
  background: #2c7be5; color: #fff !important; padding: 7px 14px; border-radius: 6px;
}
.nav-cta:hover { background: #1f6dd1; text-decoration: none; }

/* ====== Hero ====== */
.hero { padding: 32px 0 8px; }
.hero h1 { font-size: 1.7rem; margin: 0 0 8px; }
.hero-sub { color: #5a6573; margin: 0 0 24px; }
.hero-cta { font-weight: 600; }

/* ====== Search ====== */
.search-bar {
  display: flex; gap: 8px; margin: 16px 0;
}
.search-bar input {
  flex: 1; padding: 10px 14px; border: 1px solid #d4dae0; border-radius: 6px;
  font-size: 0.95rem; background: #fff;
}
.search-bar input:focus { outline: none; border-color: #2c7be5; }
.search-bar button {
  padding: 10px 20px; background: #2c7be5; color: #fff;
  border: 0; border-radius: 6px; cursor: pointer; font-size: 0.95rem;
}
.search-bar button:hover { background: #1f6dd1; }

/* ====== 分类 tabs ====== */
.category-tabs {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 20px;
}
.cat {
  padding: 6px 14px; background: #fff; border: 1px solid #e5e9ee;
  border-radius: 20px; color: #5a6573; font-size: 0.9rem;
}
.cat:hover { border-color: #2c7be5; color: #2c7be5; text-decoration: none; }
.cat.active { background: #2c7be5; border-color: #2c7be5; color: #fff; }

/* ====== Case 卡片 ====== */
.case-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.case-card {
  background: #fff; border: 1px solid #e5e9ee; border-radius: 8px;
  transition: box-shadow 0.15s, border-color 0.15s;
}
.case-card:hover { border-color: #2c7be5; box-shadow: 0 2px 12px rgba(44,123,229,0.08); }
.case-card-link { display: block; padding: 16px 18px; color: inherit; }
.case-card-link:hover { text-decoration: none; }
.case-card-meta { display: flex; gap: 8px; margin-bottom: 8px; }
.case-card-title { font-size: 1.1rem; margin: 4px 0 8px; color: #1a2733; }
.case-card-reason { color: #5a6573; font-size: 0.94rem; margin: 0 0 10px; }
.case-card-foot {
  display: flex; gap: 8px; font-size: 0.82rem; color: #8492a6;
  align-items: center;
}
.case-card-views { margin-left: auto; }

/* ====== Badge ====== */
.badge {
  display: inline-block; font-size: 0.78rem; padding: 2px 10px;
  border-radius: 10px; line-height: 1.6;
}
.badge-cat { background: #eef4fc; color: #2c7be5; }
.badge-outcome-passed { background: #e3f4e1; color: #1e8449; }
.badge-outcome-partial { background: #fff4d6; color: #b8860b; }
.badge-outcome-failed { background: #fdebe8; color: #c0392b; }
.badge-outcome-unknown { background: #eef0f3; color: #5a6573; }

/* ====== 分页 ====== */
.pagination {
  display: flex; gap: 16px; justify-content: center; align-items: center;
  padding: 24px 0;
}
.pagination-current { color: #8492a6; font-size: 0.9rem; }

.empty {
  background: #fff; padding: 40px 20px; text-align: center;
  border: 1px dashed #d4dae0; border-radius: 8px; color: #5a6573;
}

/* ====== 案例详情 ====== */
.breadcrumb { color: #8492a6; font-size: 0.9rem; margin: 16px 0; }
.breadcrumb span { margin: 0 4px; }
.case-detail h1 { margin-top: 8px; }
.case-meta {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  color: #5a6573; font-size: 0.88rem; margin-bottom: 16px;
}
.case-meta-sep { color: #c4cbd3; }
.case-section {
  background: #fff; padding: 18px 20px; border-radius: 8px;
  border: 1px solid #e5e9ee; margin: 14px 0;
}
.case-section h2 { margin: 0 0 8px; font-size: 1.05rem; }
.case-section p { margin: 0; }
.case-images {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.case-images figure { margin: 0; }
.case-images img {
  border-radius: 6px; border: 1px solid #e5e9ee;
}
.case-images figcaption { font-size: 0.85rem; color: #8492a6; margin-top: 4px; }
.case-tags { margin: 16px 0; }
.tag {
  display: inline-block; background: #eef4fc; color: #2c7be5;
  padding: 2px 10px; border-radius: 10px; font-size: 0.82rem; margin: 0 6px 6px 0;
}
.related {
  background: #fff; border: 1px solid #e5e9ee; border-radius: 8px;
  padding: 16px 20px; margin: 24px 0;
}
.related h2 { margin: 0 0 8px; font-size: 1rem; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { padding: 6px 0; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.related .related-meta { color: #8492a6; font-size: 0.82rem; }
.cta-bottom { text-align: center; margin: 32px 0; }

/* ====== Form ====== */
.privacy-card {
  background: #fff8e1; border: 1px solid #f7d774; border-radius: 8px;
  padding: 14px 18px; margin: 16px 0;
}
.privacy-card h3 { margin-top: 0; }
.privacy-card ul { margin: 8px 0; padding-left: 20px; }
.privacy-card li { margin: 4px 0; }

.submit-form { background: #fff; border: 1px solid #e5e9ee;
  border-radius: 8px; padding: 20px; margin-top: 12px; }
.form-row { margin: 0 0 16px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 6px; color: #2c3e50; }
.form-row .req { color: #c0392b; }
.form-row input[type=text],
.form-row input[type=search],
.form-row select,
.form-row textarea,
.submit-form .field {
  width: 100%; padding: 9px 12px; border: 1px solid #d4dae0; border-radius: 6px;
  font-family: inherit; font-size: 0.95rem; background: #fff;
}
.form-row textarea { resize: vertical; min-height: 90px; }
.form-row .help { color: #8492a6; font-size: 0.85rem; margin-top: 4px; }
.form-row .errors, .form-errors { color: #c0392b; font-size: 0.88rem; margin-top: 4px; }
.form-row-agree { display: flex; gap: 10px; align-items: flex-start; }
.form-row-agree input[type="checkbox"] { margin-top: 5px; flex-shrink: 0; width: 16px; height: 16px; cursor: pointer; }
.form-row-agree .agree-text { flex: 1; }
.form-row-agree label { font-weight: 600; cursor: pointer; margin-bottom: 2px; display: inline-block; }
.form-row-agree .help { color: #8492a6; font-size: 0.85rem; margin-top: 2px; }
.form-row-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-2col .form-row { margin-bottom: 0; }
@media (max-width: 640px) { .form-row-2col { grid-template-columns: 1fr; gap: 16px; } }

/* 可选项折叠 */
.form-extra { border-top: 1px dashed #d4dae0; margin: 8px 0 16px; padding-top: 4px; }
.form-extra > summary {
  cursor: pointer; padding: 10px 0; color: #5a6573; font-size: 0.92rem;
  user-select: none; list-style: none;
}
.form-extra > summary:hover { color: #2c7be5; }
.form-extra > summary::-webkit-details-marker { display: none; }
.form-extra[open] > summary { color: #2c7be5; margin-bottom: 8px; }

.form-actions { display: flex; gap: 12px; align-items: center; margin-top: 8px; }

.btn {
  display: inline-block; padding: 10px 20px; border-radius: 6px;
  font-size: 0.95rem; border: 0; cursor: pointer; font-family: inherit;
}
.btn-primary { background: #2c7be5; color: #fff; }
.btn-primary:hover { background: #1f6dd1; text-decoration: none; }
.btn-text { color: #5a6573; background: transparent; }
.btn-text:hover { color: #2c7be5; text-decoration: none; }

/* ====== 打码工具 ====== */
.mask-area {
  background: #f5f7fa; border: 1px dashed #c4cbd3; border-radius: 6px;
  padding: 12px; margin-top: 10px;
}
.mask-tip { color: #5a6573; font-size: 0.88rem; margin: 0 0 10px; }
.mask-thumbs {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.mask-thumb {
  background: #fff; border: 1px solid #e5e9ee; border-radius: 6px;
  padding: 8px; display: flex; flex-direction: column; gap: 6px;
}
.mask-thumb canvas {
  max-width: 100%; height: auto; cursor: crosshair;
  border: 1px solid #e5e9ee; border-radius: 4px;
}
.mask-thumb .mask-name { font-size: 0.82rem; color: #5a6573; word-break: break-all; }
.mask-thumb .mask-actions { display: flex; gap: 6px; }
.mask-thumb button {
  flex: 1; padding: 5px 8px; font-size: 0.82rem; border-radius: 4px;
  border: 1px solid #d4dae0; background: #fff; cursor: pointer;
}
.mask-thumb button.apply { background: #2c7be5; color: #fff; border-color: #2c7be5; }
.mask-thumb button.apply:disabled { opacity: 0.5; cursor: default; }
.mask-thumb .status { font-size: 0.78rem; color: #1e8449; }

/* ====== Messages ====== */
.messages { margin: 12px 0; }
.message {
  padding: 10px 14px; border-radius: 6px; margin: 6px 0;
  background: #e3f4e1; color: #1e8449; border: 1px solid #b7e5b1;
}
.message-error { background: #fdebe8; color: #c0392b; border-color: #f5c2bb; }

/* ====== 提交成功 / 关于 ====== */
.success-card, .about {
  background: #fff; border: 1px solid #e5e9ee; border-radius: 8px;
  padding: 24px 28px; margin: 20px 0;
}
.success-card { text-align: center; }
.success-card h1 { margin-top: 0; }
.success-card .btn { margin: 6px; }
.about ul { padding-left: 22px; }

/* ====== Footer ====== */
.site-footer {
  margin-top: auto; padding: 24px 0; background: #fff;
  border-top: 1px solid #e5e9ee;
}
.footer-inner { text-align: center; color: #8492a6; font-size: 0.85rem; }
.footer-disclaim { margin: 0 0 12px; }
.footer-disclaim strong { color: #5a6573; }
.footer-beian { margin: 0; }
.footer-beian a { color: #8492a6; }

/* ====== 响应式 ====== */
@media (max-width: 640px) {
  h1 { font-size: 1.5rem; }
  .nav { gap: 10px; }
  .nav-cta { padding: 6px 10px; font-size: 0.88rem; }
  .case-section { padding: 14px; }
  .submit-form { padding: 14px; }
}