:root {
  --vt-primary: #F37021; --vt-primary-hover: #D96119; --vt-primary-soft: #FFF4ED;
  --vt-text: #1A1A1A; --vt-text-secondary: #5C5C5C; --vt-text-muted: #8A8A8A;
  --vt-bg: #FFFFFF; --vt-bg-subtle: #F7F7F7; --vt-border-light: #E8E8E8;
  --vt-success: #2E7D32; --vt-warn: #ED6C02; --vt-error: #D32F2F;
  --vt-font-sans: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --c: var(--vt-primary); --ch: var(--vt-primary-hover); --cs: var(--vt-primary-soft); --cb: #F9C9AE;
  --t: var(--vt-text); --ts: var(--vt-text-secondary); --tm: var(--vt-text-muted);
  --bg: var(--vt-bg); --sub: var(--vt-bg-subtle); --bd: var(--vt-border-light);
  --ok: var(--vt-success); --err: var(--vt-error); --warn: #B7791F;
  --font: var(--vt-font-sans);
}
* { box-sizing: border-box; }
html { scroll-padding-top: 120px; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--t); font: 15px/1.6 var(--font); }
button { font-family: inherit; }
[hidden] { display: none !important; }

/* 顶栏 */
header { position: sticky; top: 0; z-index: 20; height: 64px; background: #fff; border-bottom: 1px solid var(--bd); }
.bar { max-width: 1200px; margin: 0 auto; height: 100%; display: flex; align-items: center; gap: 12px; padding: 0 24px; }
.logo { font-weight: 700; font-size: 18px; color: var(--c); text-decoration: none; letter-spacing: -0.02em; }
.logo-sub { font-size: 14px; color: var(--ts); }
.bar .grow { flex: 1; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 16px; font: 700 14px var(--font); border-radius: 8px; cursor: pointer; white-space: nowrap; transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease; }
.btn:focus-visible { outline: 2px solid var(--c); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.solid { background: var(--c); color: #fff; border: 2px solid var(--c); }
.solid:hover:not(:disabled) { background: var(--ch); border-color: var(--ch); }
.line { background: #fff; color: var(--c); border: 2px solid var(--c); }
.line:hover:not(:disabled) { background: var(--cs); }
.ghost { background: #fff; color: var(--ts); border: 1px solid var(--bd); font-weight: 600; }
.ghost:hover:not(:disabled) { border-color: var(--c); color: var(--c); }
.sm { min-height: 32px; padding: 4px 12px; font-size: 13px; }

main { width: min(1120px, calc(100% - 48px)); margin: 0 auto; padding: 32px 0 80px; }
#homeView { max-width: 760px; margin: 0 auto; }
h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: -0.02em; }
.lead { margin: 0 0 24px; color: var(--ts); font-size: 14px; line-height: 1.65; }
.banner, .error { margin: 0 0 16px; padding: 10px 12px; border: 1px solid var(--err); border-radius: 8px; background: #fff; color: var(--err); font-size: 14px; white-space: pre-wrap; }
.warnbox { margin: 12px 0 0; padding: 10px 12px; border: 1px solid #F0D58C; border-radius: 8px; background: #FFFBEF; color: var(--warn); font-size: 13px; }
.note { margin: 0 0 16px; padding: 10px 12px; border: 1px solid var(--bd); border-radius: 8px; background: var(--sub); color: var(--ts); font-size: 13px; }
.field-err { margin: 8px 0 0; color: var(--err); font-size: 13px; }

.modal { position: fixed; inset: 0; z-index: 45; display: none; }
.modal.open { display: block; }
.modal .mask { position: absolute; inset: 0; background: rgba(26,26,26,.35); }
.modal .box { position: absolute; top: 18%; left: 50%; transform: translateX(-50%); width: min(400px, calc(100% - 32px)); background: #fff; border: 1px solid var(--bd); border-radius: 8px; padding: 24px; }
.modal .box h2 { margin: 0 0 8px; font-size: 18px; }
.modal .box p { margin: 0 0 16px; color: var(--ts); font-size: 14px; }
.modal .box .actions { margin-top: 16px; }

/* 上传区 */
.card { background: #fff; border: 1px solid var(--bd); border-radius: 8px; padding: 24px; }
.composer { max-width: none; }
label.lbl { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 600; }
.opt { font-weight: 400; color: var(--tm); }
.inp, .ta { width: 100%; padding: 10px 12px; font: 14px/1.45 var(--font); color: var(--t); background: #fff; border: 1px solid var(--bd); border-radius: 8px; outline: none; }
.inp:focus, .ta:focus { border-color: var(--c); box-shadow: 0 0 0 2px rgba(243, 112, 33, 0.2); }
.ta { min-height: 80px; resize: vertical; }
.field { margin-top: 16px; }
.dz { padding: 32px 16px; text-align: center; border: 1px dashed #CFCFCF; border-radius: 8px; background: var(--sub); cursor: pointer; }
.dz:hover, .dz.drag { border-color: var(--c); background: var(--cs); }
.dz:focus-visible { outline: 2px solid var(--c); outline-offset: 2px; }
.dz p { margin: 0; color: var(--ts); font-size: 14px; }
.dz .sub { margin-top: 6px; color: var(--tm); font-size: 12px; }
#fileInput { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.files { list-style: none; margin: 12px 0 0; padding: 0; }
.files li { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--bd); border-radius: 8px; margin-bottom: 6px; font-size: 14px; }
.files .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.meta { color: var(--tm); font-size: 12px; white-space: nowrap; }
.st-done { color: var(--ok); } .st-err { color: var(--err); } .st-up { color: var(--c); }
.x { border: 0; background: none; color: var(--tm); cursor: pointer; font-size: 13px; padding: 6px 8px; }
.x:hover { color: var(--err); }
.actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 20px; }
.phase { color: var(--ts); font-size: 14px; }

/* 结果页 */
.rhead { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.rhead h1 { flex: 1; min-width: 240px; font-size: 24px; margin: 0; }
.rmeta { width: 100%; color: var(--tm); font-size: 13px; display: flex; gap: 14px; flex-wrap: wrap; }
.kpis { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 20px; }
.kpi { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border: 1px solid var(--bd); border-radius: 999px; font-size: 13px; color: var(--ts); background: #fff; }
.kpi b { color: var(--t); font-size: 15px; }
.kpi.warn { border-color: var(--cb); background: var(--cs); color: var(--ch); }
.kpi.warn b { color: var(--ch); }

.secnav { position: sticky; top: 64px; z-index: 10; display: flex; gap: 4px; overflow-x: auto; padding: 8px 0; margin: 0 0 20px; background: #fff; border-bottom: 1px solid var(--bd); }
.secnav a { flex-shrink: 0; padding: 6px 12px; border-radius: 6px; font-size: 14px; color: var(--ts); text-decoration: none; }
.secnav a:hover { background: var(--sub); color: var(--t); }
.secnav a.on { background: var(--cs); color: var(--ch); font-weight: 700; }
.secnav a .n { color: var(--tm); font-size: 12px; margin-left: 4px; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 32px; align-items: start; }
.content { min-width: 0; }
.evid { position: sticky; top: 124px; }
.evid h3 { margin: 0 0 8px; font-size: 14px; color: var(--ts); }
.evid .hint { margin: 8px 0 0; color: var(--tm); font-size: 13px; }
.src-demo { cursor: default; pointer-events: none; }
.thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; max-height: calc(100vh - 200px); overflow: auto; padding-right: 2px; }
.thumb { position: relative; display: block; aspect-ratio: 1; border: 1px solid var(--bd); border-radius: 6px; overflow: hidden; background: var(--sub); cursor: zoom-in; padding: 0; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .no { position: absolute; left: 4px; top: 4px; padding: 0 6px; font-size: 11px; font-weight: 700; color: #fff; background: rgba(26, 26, 26, 0.75); border-radius: 4px; }
.thumb .pdf { display: flex; align-items: center; justify-content: center; height: 100%; font-size: 12px; font-weight: 700; color: var(--ts); }
.thumb.hot { outline: 3px solid var(--c); outline-offset: -1px; }

section.sec { margin: 0 0 36px; }
.sec h2 { display: flex; align-items: baseline; gap: 10px; margin: 0 0 14px; padding-bottom: 8px; font-size: 19px; border-bottom: 2px solid var(--bd); }
.sec h2 .idx { color: var(--c); font-size: 14px; font-weight: 700; }
.sec h2 .cnt { margin-left: auto; color: var(--tm); font-size: 13px; font-weight: 400; }
.lede { margin: 0 0 12px; font-size: 15px; }
.muted { color: var(--tm); font-size: 13px; }
.md p, .md li { margin: 0 0 8px; } .md ul, .md ol { padding-left: 22px; }
.md table { border-collapse: collapse; width: 100%; font-size: 14px; } .md th, .md td { border: 1px solid var(--bd); padding: 8px 10px; vertical-align: top; text-align: left; }

/* 徽标与来源标记 */
.badge { display: inline-block; padding: 0 7px; border-radius: 4px; font-size: 12px; font-weight: 700; line-height: 20px; white-space: nowrap; vertical-align: middle; }
.b-明确 { background: #E6F4EA; color: var(--ok); }
.b-推算 { background: var(--cs); color: var(--ch); }
.b-推定 { background: #FFF6DB; color: var(--warn); }
.b-缺失 { background: #EEEEEE; color: var(--ts); }
.b-冲突 { background: var(--c); color: #fff; }
.b-不适用 { background: #F3F3F3; color: var(--tm); }
.b-无法识别 { background: #FDECEA; color: var(--err); }
.src { display: inline-flex; align-items: center; gap: 4px; padding: 0 8px; border: 1px solid var(--cb); border-radius: 999px; background: #fff; color: var(--ch); font-size: 12px; font-weight: 700; line-height: 20px; cursor: pointer; vertical-align: middle; text-decoration: none; }
.src:hover { background: var(--cs); }
.src.dead { border-color: var(--bd); color: var(--tm); cursor: default; }
.loc { color: var(--tm); font-size: 12px; }
.tagc { display: inline-block; padding: 0 6px; border: 1px solid var(--bd); border-radius: 4px; font-size: 12px; color: var(--ts); line-height: 18px; margin-left: 6px; vertical-align: middle; }

/* 0 冲突 */
.alert { border: 1px solid var(--cb); border-left: 4px solid var(--c); border-radius: 8px; background: var(--cs); padding: 16px 18px; }
.alert .item + .item { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--cb); }
.alert .fld { font-weight: 700; font-size: 16px; margin-bottom: 8px; }
.vs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.vs .side { background: #fff; border: 1px solid var(--bd); border-radius: 6px; padding: 10px 12px; font-size: 14px; }
.vs .side .lab { font-size: 12px; color: var(--tm); margin-bottom: 4px; }
.alert .row { margin-top: 8px; font-size: 14px; } .alert .row b { color: var(--ts); font-weight: 600; margin-right: 6px; }
.calm { padding: 12px 16px; border: 1px solid #C8E6C9; border-radius: 8px; background: #F1F8F2; color: var(--ok); font-size: 14px; }

/* 1 特征 */
.feat { list-style: none; margin: 0; padding: 0; }
.feat li { display: flex; gap: 10px; align-items: baseline; padding: 8px 0; border-bottom: 1px solid var(--sub); font-size: 15px; }
.feat li::before { content: ""; flex-shrink: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--c); position: relative; top: -2px; }
.feat .txt { flex: 1; min-width: 0; }
.feat .tail { display: inline-flex; gap: 6px; align-items: center; margin-left: 8px; white-space: nowrap; }

/* 2 规格 */
.spec { display: grid; grid-template-columns: 150px minmax(0, 1fr); border-top: 1px solid var(--bd); }
.spec > div { padding: 10px 12px; border-bottom: 1px solid var(--bd); font-size: 14px; }
.spec .k { color: var(--ts); font-weight: 600; background: var(--sub); }
.spec .v .val { font-size: 15px; }
.spec .v .val b, .spec .v .val strong { font-weight: 700; }
.spec .line2 { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 4px; }
.spec .note { margin-top: 4px; color: var(--tm); font-size: 13px; }
.spec .dim .val { color: var(--tm); }

/* 3 功能 */
.func { display: grid; gap: 12px; }
.fcard { border: 1px solid var(--bd); border-radius: 8px; padding: 14px 16px; }
.fcard .ft { font-weight: 700; font-size: 16px; margin-bottom: 6px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.fcard .fd { font-size: 14px; }
.fcard .fc { margin-top: 6px; font-size: 13px; color: var(--ts); }
.fcard .fc b { color: var(--ts); font-weight: 600; }
.fcard .fn { margin-top: 8px; padding: 8px 10px; border-left: 3px solid var(--warn); background: #FFFBEF; font-size: 13px; }
.fcard.special { border-color: var(--cb); border-left: 4px solid var(--c); background: #FFFAF6; }
.ftag { display: inline-block; padding: 0 7px; border-radius: 4px; font-size: 12px; font-weight: 700; line-height: 20px; }
.ftag.special { background: var(--c); color: #fff; }
.ftag.basic { background: var(--sub); color: var(--ts); border: 1px solid var(--bd); }
.fgroup { margin-bottom: 20px; }
.fgroup h3 { margin: 0 0 10px; font-size: 15px; display: flex; gap: 8px; align-items: baseline; }
.fgroup.special h3 { color: var(--ch); }

/* 4 配件 / 5 组装 */
.acc { width: 100%; border-collapse: collapse; font-size: 14px; }
.acc th { text-align: left; padding: 8px 10px; background: var(--sub); border-bottom: 1px solid var(--bd); font-weight: 600; color: var(--ts); font-size: 13px; }
.acc td { padding: 10px; border-bottom: 1px solid var(--bd); vertical-align: top; }
.acc .qty { font-weight: 700; font-size: 16px; white-space: nowrap; }
.acc .aname { font-weight: 700; }
.acc .desc { color: var(--ts); font-size: 13px; margin-top: 2px; }
.mini { display: inline-flex; gap: 4px; }
.mini button { width: 56px; height: 56px; padding: 0; border: 1px solid var(--bd); border-radius: 6px; overflow: hidden; background: var(--sub); cursor: zoom-in; position: relative; }
.mini img { width: 100%; height: 100%; object-fit: cover; display: block; }
.mini .no { position: absolute; left: 2px; bottom: 2px; padding: 0 4px; font-size: 10px; font-weight: 700; color: #fff; background: rgba(26,26,26,.75); border-radius: 3px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: st; }
.steps li { display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--bd); counter-increment: st; }
.steps li::before { content: counter(st); width: 32px; height: 32px; border-radius: 50%; background: var(--c); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.steps .stxt { font-size: 15px; } .steps .sloc { margin-top: 4px; }
.presumed { margin-top: 20px; padding: 14px 16px; border: 1px dashed #CFCFCF; border-radius: 8px; background: var(--sub); }
.presumed h3 { margin: 0 0 8px; font-size: 15px; color: var(--ts); }
.presumed ol { margin: 0; padding-left: 22px; font-size: 14px; color: var(--ts); }

/* 6 澄清 */
.qs { margin: 0; padding: 0; list-style: none; counter-reset: q; }
.qs li { counter-increment: q; display: flex; gap: 12px; padding: 12px 14px; border: 1px solid var(--bd); border-radius: 8px; margin-bottom: 8px; font-size: 14px; }
.qs li::before { content: counter(q); flex-shrink: 0; width: 24px; height: 24px; border-radius: 4px; background: var(--t); color: #fff; font-weight: 700; font-size: 13px; display: flex; align-items: center; justify-content: center; }

/* 历史抽屉 */
.drawer { position: fixed; inset: 0; z-index: 40; display: none; }
.drawer.open { display: block; }
.drawer .mask { position: absolute; inset: 0; background: rgba(26,26,26,.35); }
.drawer .panel { position: absolute; top: 0; right: 0; bottom: 0; width: 360px; max-width: 100%; background: #fff; border-left: 1px solid var(--bd); display: flex; flex-direction: column; }
.drawer .ph { display: flex; align-items: center; gap: 10px; height: 64px; padding: 0 16px; border-bottom: 1px solid var(--bd); font-weight: 700; }
.drawer .ph .grow { flex: 1; }
.hlist { list-style: none; margin: 0; padding: 12px; overflow: auto; flex: 1; }
.hlist li { position: relative; margin-bottom: 8px; }
.hitem { display: block; width: 100%; text-align: left; padding: 10px 36px 10px 12px; border: 1px solid var(--bd); border-radius: 8px; background: #fff; cursor: pointer; font: 14px/1.4 var(--font); color: var(--t); }
.hitem:hover { border-color: var(--c); } .hitem.on { border-color: var(--c); background: var(--cs); }
.htitle { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hmeta { color: var(--tm); font-size: 12px; margin-top: 2px; }
.tag { display: inline-block; margin-left: 6px; padding: 0 6px; font-size: 11px; font-weight: 700; color: #fff; background: var(--c); border-radius: 4px; vertical-align: middle; }
.hdel { position: absolute; top: 8px; right: 6px; border: 0; background: none; color: var(--tm); cursor: pointer; padding: 6px; font-size: 13px; }
.hdel:hover { color: var(--err); }
.empty { color: var(--tm); font-size: 13px; padding: 8px 12px; }

/* 灯箱 */
.lb { position: fixed; inset: 0; z-index: 50; display: none; background: rgba(26,26,26,.88); color: #fff; }
.lb.open { display: flex; flex-direction: column; }
.lb .lbh { display: flex; align-items: center; gap: 12px; height: 56px; padding: 0 16px; font-size: 14px; }
.lb .lbh .grow { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb .lbh button { background: none; border: 1px solid rgba(255,255,255,.4); color: #fff; border-radius: 6px; padding: 4px 10px; cursor: pointer; }
.lb .lb-link { color: #fff; font-size: 13px; text-decoration: none; border: 1px solid rgba(255,255,255,.4); border-radius: 6px; padding: 4px 10px; }
.lb .lb-link:hover { border-color: #fff; }
.lb .stage { flex: 1; min-height: 0; overflow: auto; display: flex; align-items: center; justify-content: center; padding: 8px 16px 16px; }
.lb .stage img { max-width: 100%; max-height: 100%; object-fit: contain; cursor: zoom-in; }
.lb .stage img.full { max-width: none; max-height: none; cursor: zoom-out; }
.lb .stage iframe { width: 100%; height: 100%; border: 0; background: #fff; }
.lb .cap { padding: 0 16px 12px; font-size: 13px; color: rgba(255,255,255,.8); }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .evid { position: static; }
  .thumbs { grid-template-columns: repeat(6, 1fr); max-height: none; }
  .vs { grid-template-columns: 1fr; }
  .spec { grid-template-columns: 1fr; } .spec .k { border-bottom: 0; padding-bottom: 2px; }
}