* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; background: #f2f4f8; color: #1c2733; }
.topbar { display: flex; align-items: center; gap: 14px; background: #11192e; color: #fff; padding: 10px 16px; position: sticky; top: 0; z-index: 10; }
.brand-logo { height: 30px; width: auto; }
.brand-logo.sm { height: 20px; }
.topbar .back { color: #c9d6ea; text-decoration: none; font-size: 14px; white-space: nowrap; }
.topbar .title { display: flex; flex-direction: column; margin-right: auto; }
.topbar .title strong { font-size: 17px; }
.topbar .title .meta { font-size: 12px; color: #9fb2c8; }
.top-actions { display: flex; gap: 8px; }
.btn { display: inline-block; border: 1px solid #d5dce6; background: #fff; color: #1c2733; border-radius: 9px; padding: 8px 14px; font-size: 14px; cursor: pointer; text-decoration: none; }
.btn.ghost { background: transparent; color: #e8eefb; border-color: #44557a; }
.btn.primary { background: #d9480f; border-color: #d9480f; color: #fff; font-weight: 600; }
.btn.wide { width: 100%; padding: 13px; font-size: 16px; }
.wrap { max-width: 980px; margin: 0 auto; padding: 16px 12px 32px; }
.card { background: #fff; border-radius: 14px; padding: 18px; margin-bottom: 16px; box-shadow: 0 1px 4px rgba(17, 25, 46, .06); }
.card h2 { margin: 0 0 12px; font-size: 19px; }
.count { font-size: 13px; color: #7a8798; font-weight: 400; }
.hint { color: #66758a; font-size: 13px; line-height: 1.6; }
.search-row input { width: 100%; padding: 12px 14px; font-size: 16px; border: 1px solid #d5dce6; border-radius: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.chips.sub { margin-top: 4px; }
.chip { border: 1px solid #d5dce6; background: #fff; border-radius: 999px; padding: 7px 14px; font-size: 14px; cursor: pointer; min-height: 40px; }
.chip.on { background: #11192e; color: #fff; border-color: #11192e; }
.chips.sub .chip { font-size: 13px; padding: 5px 12px; min-height: 34px; color: #44557a; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-top: 12px; }
.tut { border: 1px solid #e4e9f1; border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.tut h3 { margin: 0; font-size: 16px; line-height: 1.45; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { background: #eef2f9; color: #44557a; border-radius: 6px; padding: 2px 8px; font-size: 12px; cursor: pointer; border: none; }
.tut .watch { margin-top: auto; text-align: center; }
.empty { color: #66758a; text-align: center; padding: 22px 8px; }
.frow { display: flex; gap: 12px; }
.frow label { flex: 1; }
form label { display: block; font-size: 14px; color: #44557a; margin-bottom: 12px; }
form input, form select, form textarea { width: 100%; margin-top: 6px; padding: 11px 12px; font-size: 16px; border: 1px solid #d5dce6; border-radius: 9px; font-family: inherit; }
form label.block { display: block; }
.result { min-height: 22px; font-size: 14px; margin: 10px 0 0; }
.result.ok { color: #1d7a3a; }
.result.err { color: #c22525; }
.foot { display: flex; align-items: center; gap: 10px; justify-content: center; color: #7a8798; font-size: 13px; padding: 8px 0 4px; }
.foot .brand-logo { filter: none; background: #11192e; border-radius: 6px; padding: 3px 8px; }
@media (max-width: 560px) {
  .topbar .title .meta { display: none; }
  .topbar .back { display: none; }
  .frow { flex-direction: column; gap: 0; }
  .grid { grid-template-columns: 1fr 1fr; }
  .tut h3 { font-size: 14px; }
}
.steps { margin: 0; padding-left: 22px; line-height: 1.9; font-size: 15px; }
.steps li { margin-bottom: 4px; }
.note { background: #fff7ed; border: 1px solid #f3d9b8; border-radius: 10px; padding: 12px 14px; font-size: 14px; line-height: 1.7; color: #6b4a1f; }
.vlist { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-top: 12px; }
.vitem { border: 1px solid #e4e9f1; border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.vitem h3 { margin: 0; font-size: 16px; line-height: 1.45; }
.vitem p { margin: 0; font-size: 13px; color: #66758a; line-height: 1.6; }
.vitem .watch { margin-top: auto; text-align: center; }
details.faq { border: 1px solid #e4e9f1; border-radius: 12px; padding: 12px 14px; margin-bottom: 10px; background: #fff; }
details.faq summary { font-size: 15px; font-weight: 600; cursor: pointer; line-height: 1.5; }
details.faq .body { font-size: 14px; line-height: 1.8; color: #44557a; margin-top: 8px; }
details.faq .body a { color: #d9480f; }
.biglink { display: block; text-align: center; }
.tel { font-size: 20px; font-weight: 700; color: #d9480f; letter-spacing: .5px; }
/* print-setting presets (2026-10-30) */
.pitems { list-style: none; margin: 0; padding: 0; font-size: 14px; line-height: 1.85; color: #1c2733; }
.pitems .pk { color: #66758a; }
.vitem .src { font-size: 12px; color: #93a1b5; }
.vitem.guide { border-style: dashed; background: #fbfcfe; }