/* KBSnap — 设计 token + 组件样式。无 webfont、无框架、无 CDN。 */
:root {
  --primary: #0ea5e9;
  --primary-light: #e0f2fe;
  --primary-hover: #0284c7;
  --success: #22c55e;
  --success-bg: #dcfce7;
  --error: #ef4444;
  --error-bg: #fee2e2;
  --surface: #f9fafb;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --text: #111827;
  --text-2: #4b5563;
  --text-3: #9ca3af;
  --radius: 10px;
  --radius-sm: 7px;
  --shadow: 0 1px 2px rgba(17, 24, 39, 0.06);
  --maxw: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: #fff;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
img, canvas, svg { max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .wrap { padding: 0 24px; } }
@media (min-width: 1024px) { .wrap { padding: 0 32px; } }

/* ------------------------------- header ------------------------------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.hdr-in { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 650; color: var(--text); }
.brand svg { color: var(--primary); flex: none; }
.nav { display: none; gap: 2px; margin-left: 8px; }
@media (min-width: 900px) { .nav { display: flex; } }
.navlink { padding: 6px 11px; border-radius: var(--radius-sm); font-size: 13.5px; font-weight: 500; color: var(--text-2); white-space: nowrap; }
.navlink:hover { background: #f3f4f6; color: var(--text); }
.navlink.is-active { background: var(--primary); color: #fff; }
.hdr-right { display: flex; align-items: center; gap: 8px; }
.lang { position: relative; }
.lang > summary, .lang-static {
  display: flex; align-items: center; gap: 5px; cursor: pointer;
  padding: 6px 9px; border-radius: var(--radius-sm); font-size: 13px; color: var(--text-2);
  list-style: none; user-select: none;
}
.lang > summary::-webkit-details-marker, .mnav > summary::-webkit-details-marker { display: none; }
.lang > summary:hover, .lang-static { background: #f3f4f6; }
.lang .chev { transition: transform 0.15s; }
.lang[open] .chev { transform: rotate(180deg); }
.lang-list, .mnav ul {
  position: absolute; right: 0; top: calc(100% + 6px); min-width: 168px; z-index: 60;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(17, 24, 39, 0.12); padding: 5px; list-style: none;
}
.lang-list a, .mnav a { display: block; padding: 7px 10px; border-radius: 6px; font-size: 13.5px; color: var(--text-2); }
.lang-list a:hover, .mnav a:hover { background: var(--surface); color: var(--text); }
.mnav { position: relative; }
.mnav > summary { list-style: none; cursor: pointer; padding: 6px; border-radius: var(--radius-sm); color: var(--text-2); display: flex; }
.mnav > summary:hover { background: #f3f4f6; }
@media (min-width: 900px) { .mnav { display: none; } }

/* -------------------------------- main -------------------------------- */
.main { padding-top: 20px; padding-bottom: 56px; }
@media (min-width: 1024px) { .main { padding-top: 26px; } }
.cols { display: block; }
@media (min-width: 1024px) {
  .cols { display: grid; grid-template-columns: minmax(0, 1fr) 288px; gap: 40px; align-items: start; }
}
.col-main { min-width: 0; }
.col-side { display: none; }
@media (min-width: 1024px) { .col-side { display: block; } }
.side-sticky { position: sticky; top: 76px; }
.side-card { margin-top: 22px; }
.side-card h4 { font-size: 13.5px; margin-bottom: 10px; }
.sidelist { list-style: none; display: grid; gap: 2px; }
.sidelist a { display: flex; align-items: center; gap: 9px; padding: 7px 8px; border-radius: 7px; font-size: 13.5px; color: var(--text-2); }
.sidelist a:hover { background: var(--surface); color: var(--text); }
.sic { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 6px; background: var(--primary-light); color: var(--primary); flex: none; }

/* -------------------------------- hero -------------------------------- */
.crumbs { display: flex; gap: 6px; font-size: 12.5px; color: var(--text-3); margin-bottom: 10px; flex-wrap: wrap; }
.crumbs a { color: var(--text-3); }
.crumbs a:hover { color: var(--primary); }
.hero h1 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.15rem); font-weight: 700; letter-spacing: -0.02em; }
.hero .sub { margin-top: 6px; color: var(--text-2); font-size: 15px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; list-style: none; }
.trust li { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--text-2); background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; }
.trust svg { color: var(--success); flex: none; }

/* ------------------------------ dropzone ------------------------------ */
.tool { margin-top: 12px; }
.dz {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  min-height: 168px; padding: 22px 16px; cursor: pointer;
  border: 2px dashed var(--border-strong); border-radius: var(--radius); background: var(--surface);
  transition: border-color 0.15s, background 0.15s;
}
.dz:hover, .dz:focus-visible { border-color: var(--primary); background: var(--primary-light); }
.dz.is-over { border-color: var(--primary); background: var(--primary-light); }
.dz.is-over .dz-ico { background: #fff; box-shadow: var(--shadow); }
.dz-ico { width: 44px; height: 44px; border-radius: 999px; display: grid; place-items: center; background: var(--primary-light); color: var(--primary); margin-bottom: 8px; }
.dz.is-over .dz-ico, .dz:hover .dz-ico { background: #fff; }
.dz-title { font-size: 15.5px; font-weight: 600; }
.dz-folder { margin-top: 10px; background: #fff; border: 1px solid var(--border-strong); color: var(--text-2); font-size: 12.5px; font-weight: 600; padding: 6px 12px; border-radius: 999px; cursor: pointer; }
.dz-folder:hover { border-color: var(--primary); color: var(--primary); }
.dz-hint { font-size: 12.5px; color: var(--text-3); margin-top: 4px; }
.dz-note { display: flex; align-items: center; justify-content: center; gap: 5px; font-size: 12px; color: var(--text-3); margin-top: 6px; }

/* 已经选好文件之后，拖拽区不该继续占 200 多像素 —— 参数才是这时候要看的东西。
 * 收成一条 44px 的细带：仍然接得住拖拽（这是它唯一还需要的功能），
 * 「选择文件夹」推到右端当次级入口，隐私那行交给顶部信任标签去说。 */
.dz.is-filled {
  flex-direction: row; text-align: left; min-height: 0;
  padding: 8px 12px; gap: 9px; border-width: 1px; background: #fff;
}
.dz.is-filled .dz-ico { width: 28px; height: 28px; margin-bottom: 0; background: var(--primary-light); }
.dz.is-filled .dz-ico svg { width: 15px; height: 15px; }
.dz.is-filled .dz-title { font-size: 13px; font-weight: 600; color: var(--text-2); }
.dz.is-filled .dz-hint { display: none; }
.dz.is-filled .dz-folder { margin-top: 0; margin-left: auto; padding: 4px 10px; font-size: 11.5px; flex: none; }
.dz-note.is-filled { display: none; }

/* 带画框的工具（裁剪 / 旋转 / 翻转 / 证件照）：宽屏上画框与参数并排。
 * 画框本身就有 300–400px 高，参数再摞在它下面，一屏就彻底装不下了 ——
 * 而这时候用户恰恰是「一边拖框、一边调数值」，两者同屏本来才是对的。
 * 只在画框真的显示时才让参数占右栏（:has 判断），否则参数整行铺开，
 * 免得首屏出现一个空着的大洞。 */
@media (min-width: 1024px) {
  .tool-split {
    display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    column-gap: 16px; align-items: start;
  }
  .tool-split > .dz,
  .tool-split > .dz-note,
  .tool-split > #queueCard,
  .tool-split > .actions,
  .tool-split > #progressCard,
  .tool-split > #resultsCard,
  .tool-split > #errorCard { grid-column: 1 / -1; }
  .tool-split > #editorCard { grid-column: 1; }
  .tool-split > #paramsCard { grid-column: 2; }
  .tool-split:not(:has(#editorCard:not([hidden]))) > #paramsCard { grid-column: 1 / -1; }
  /* 并排时右栏只有 500 多像素，塞三列会把「Auto-detect face and place the crop」
   * 这种长标签折成四行 —— 只在真的并排时固定两列，整宽时照旧三列 */
  .tool-split:has(#editorCard:not([hidden])) #paramsCard .params-grid { grid-template-columns: 1fr 1fr; }
  /* 并排时画框再收一档：竖构图的照片按 2:3 算，260px 宽正好落在 390px 高，
   * 加上数值条与握手提示也不会把「开始」按钮顶出屏幕 */
  .tool-split .editor-slot { max-width: 260px; }
}

/* -------------------------------- card -------------------------------- */
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-top: 10px; }
@media (min-width: 640px) { .card { padding: 14px 18px; } }
.card-h { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
/* 「参数改了，下面的结果还是按旧参数算的」——不提示的话用户会以为重跑失败了 */
.stale-badge {
  color: #b45309; background: #fffbeb; border: 1px solid #fde68a;
  border-radius: 999px; padding: 1px 9px; font-weight: 600; white-space: nowrap;
}
.card-t { font-size: 14px; font-weight: 650; }
.mini { font-size: 12px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.linkbtn { background: none; border: 0; padding: 0; cursor: pointer; font-size: 13px; color: var(--text-3); }
.linkbtn:hover { color: var(--text-2); }

/* ------------------------------- params ------------------------------- */
.params-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 640px) { .params-grid { grid-template-columns: 1fr 1fr; gap: 10px 16px; } }
/* 宽屏上再放一列：6 个参数从 3 行压到 2 行，正好把「开始」按钮留在笔记本的一屏里 */
@media (min-width: 1100px) { .params-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.field[data-full] { grid-column: 1 / -1; }
.lbl { display: block; font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 4px; }
.hint { font-style: normal; font-weight: 400; color: var(--text-3); font-size: 12px; margin-left: 6px; }
.ctrl { display: flex; align-items: center; gap: 8px; }
.inputrow { display: flex; align-items: center; gap: 8px; }
input[type="number"], input[type="text"], select {
  width: 100%; padding: 6px 9px; font: inherit; font-size: 13.5px; color: var(--text);
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: #fff;
  appearance: none; min-height: 34px;
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2.4'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 30px; cursor: pointer;
}
input[type="number"]:focus, input[type="text"]:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15); }
.suffix { font-size: 13px; color: var(--text-3); flex: none; }
input[type="color"] { width: 100%; height: 34px; padding: 3px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: #fff; cursor: pointer; }
.switch { display: inline-flex; align-items: center; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track { position: relative; width: 40px; height: 22px; border-radius: 999px; background: #d1d5db; transition: background 0.16s; }
.switch .track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 999px; background: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25); transition: transform 0.16s; }
.switch input:checked + .track { background: var(--primary); }
.switch input:checked + .track::after { transform: translateX(18px); }
.switch input:focus-visible + .track { outline: 2px solid var(--primary); outline-offset: 2px; }
.field-switch { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.field-switch .lbl { margin-bottom: 0; }
.rangerow { display: flex; align-items: center; gap: 10px; width: 100%; }
.rangerow input[type="range"] { flex: 1; accent-color: var(--primary); height: 22px; }
.rangerow output { font-size: 12.5px; color: var(--text-2); min-width: 46px; text-align: right; font-variant-numeric: tabular-nums; }

/* ------------------------------- buttons ------------------------------ */
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 10px; }
.actions-in { margin-top: 10px; }
.actions-note { font-size: 12.5px; color: var(--text-3); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 8px 16px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: background 0.15s, opacity 0.15s;
  min-height: 38px;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { background: #cbd5e1; cursor: not-allowed; box-shadow: none; }
.btn-ghost { background: #fff; border-color: var(--border-strong); color: var(--text-2); }
.btn-ghost:hover { background: var(--surface); }
.btn-sm { padding: 6px 11px; font-size: 12.5px; min-height: 32px; font-weight: 600; }
.btn-ok { background: var(--success); color: #fff; }
.btn-ok:hover { filter: brightness(0.95); }
/* 参数改过、需要重跑：按钮戴一圈暖色，别让它看起来跟「什么都没发生」一样 */
.btn-primary.is-rerun { box-shadow: 0 0 0 3px #fde68a; }

/* ------------------------------- queue -------------------------------- */
/* 上传后的缩略图：方形网格，紧贴上传区下方显示。
 * 尺寸从 104px 收到 72px —— 方块只需要认得「是哪张」，参数区才是这一屏要露出来的东西。
 * 之前是 42px 小图标 + 一行文件名，用户看不出自己到底选了哪几张照片。 */
.qlist {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 8px;
}
.qlist li { position: relative; display: grid; gap: 3px; min-width: 0; }
/* 方形由 thumb 自己保证（aspect-ratio），li 只负责「图 + 一行说明」的堆叠 */
.qlist .qthumb {
  position: relative; width: 100%; height: auto; aspect-ratio: 1 / 1;
  border: 1px solid var(--border); border-radius: 8px; background: #f3f4f6;
  overflow: hidden; transition: border-color 0.14s, box-shadow 0.14s;
}
.qlist .qthumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.qlist .qthumb > svg { width: 18px; height: 18px; }
/* 状态只在「已处理 / 失败 / 处理中」时压在图上；排队中不必打扰 */
.qlist .qstate {
  position: absolute; left: 4px; bottom: 4px; z-index: 2;
  padding: 0 5px; border-radius: 999px; font-size: 10px; line-height: 1.65;
  background: rgba(255, 255, 255, 0.94); box-shadow: 0 1px 2px rgba(15, 23, 42, 0.18);
}
.qlist .qstate.run { padding: 2px 4px; }
.qlist .qstate .spin { width: 11px; height: 11px; border-width: 1.6px; }
.qlist .qdel {
  position: absolute; top: 3px; right: 3px; z-index: 3;
  width: 19px; height: 19px; padding: 0; display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.94); box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
}
.qlist .qdel svg { width: 11px; height: 11px; }
.qlist .qmeta { min-width: 0; padding: 0 1px; }
.qlist .qname { display: block; font-size: 10.5px; font-weight: 550; }
.qlist .qsub { display: block; font-size: 10px; }
.qlist li.is-click { cursor: pointer; }
.qlist li.is-click:hover .qthumb { border-color: var(--primary); }
.qlist li.is-click:hover .qdel { background: #fff; }
/* 当前正在画框里编辑的那张：描一圈主色，不用背景色块（方块上会脏） */
.qlist li.is-active .qthumb { border-color: transparent; box-shadow: 0 0 0 2px var(--primary); }
.qlist li.is-active .qname { color: var(--primary-hover); }
.qdel { background: none; border: 0; padding: 5px; border-radius: 6px; color: var(--text-3); cursor: pointer; display: flex; }
.qdel:hover { background: #f3f4f6; color: var(--text-2); }

/* 结果列表里的小缩略图（队列里的大方块走上面的 .qlist 覆写） */
.qthumb {
  width: 42px; height: 42px; border-radius: 7px; background: #f3f4f6; flex: none;
  overflow: hidden; display: grid; place-items: center; color: var(--text-3); position: relative;
}
.qthumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 结果缩略图本身就是预览入口：点开新窗口看原图 */
.qopen { cursor: zoom-in; text-decoration: none; }
.qopen:hover, .qopen:focus-visible { box-shadow: 0 0 0 2px var(--primary-light), 0 0 0 3px var(--primary); background: #eef2f7; }
.qopen:focus-visible { outline: none; }
.qmeta { flex: 1; min-width: 0; }
.qname { font-size: 13.5px; font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qsub { font-size: 11.5px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.qstate { font-size: 12px; font-weight: 600; flex: none; }
.qstate.ok { color: var(--success); }
.qstate.err { color: var(--error); }
.qstate.run { color: var(--primary); }
.qstate.wait { color: var(--text-3); font-weight: 500; }
.spin { width: 15px; height: 15px; border-radius: 999px; border: 2px solid var(--primary); border-top-color: transparent; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------ progress ------------------------------ */
.bar { height: 8px; border-radius: 999px; background: #f3f4f6; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--primary); border-radius: 999px; transition: width 0.18s ease-out; }
.prog-note { font-size: 12.5px; color: var(--text-3); margin-top: 9px; }

/* ------------------------------- results ------------------------------ */
.result-sum { font-size: 13.5px; color: var(--text-2); margin-bottom: 10px; }
.result-sum b { color: var(--success); }
.rlist { list-style: none; display: grid; }
.rlist li { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-top: 1px solid #f3f4f6; }
.rlist li:first-child { border-top: 0; }
.rlist li.is-err { background: var(--error-bg); border-radius: 7px; padding: 11px 10px; border-top-color: transparent; margin: 2px 0; }
.rico { flex: none; display: grid; place-items: center; color: var(--success); }
.rlist li.is-err .rico { color: var(--error); }
.rmeta { flex: 1; min-width: 0; }
.rname { font-size: 13.5px; font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rsub { font-size: 11.5px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.rsub .down { color: var(--success); font-weight: 600; }
.rsub .up { color: var(--error); font-weight: 600; }
.rsub .sizehint { display: block; font-style: normal; color: var(--text-3); font-size: 11px; margin-top: 2px; }
.rlist li.is-err .rsub { color: var(--error); }
.rbtns { display: flex; gap: 6px; flex: none; }

/* -------------------------------- error ------------------------------- */
.card-error { border-color: #fecaca; background: var(--error-bg); text-align: center; }
.err-ico { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 999px; background: #fff; color: var(--error); margin: 0 auto 10px; box-shadow: var(--shadow); }
.card-error h3 { font-size: 16px; }
.err-body { font-size: 13.5px; color: var(--text-2); margin-top: 4px; }
.card-error .actions { justify-content: center; }

/* -------------------------------- editor ------------------------------ */
.editor-slot { position: relative; width: 100%; max-width: 300px; margin: 0 auto; background: #111; border-radius: 8px; overflow: hidden; touch-action: none; cursor: grab; }
.editor-slot canvas { display: block; width: 100%; height: auto; }
.editor-slot:active { cursor: grabbing; }
.editor-zoom { margin-top: 10px; }
.hintline { font-size: 12px; color: var(--text-3); margin-top: 8px; text-align: center; }

/* 裁剪数值与快捷操作（C-03 / C-04） */
.cropbar { margin-top: 10px; }
.cropnums { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.cropnum { display: grid; gap: 3px; }
.cropnum span { font-size: 11px; color: var(--text-3); font-weight: 600; }
.cropnum input {
  width: 100%; min-width: 0; padding: 6px 7px; font: inherit; font-size: 13px;
  border: 1px solid var(--border-strong); border-radius: 7px;
  font-variant-numeric: tabular-nums; background: #fff; color: var(--text-1);
}
.cropnum input:focus { outline: 2px solid var(--primary-light); outline-offset: 1px; border-color: var(--primary); }
.cropacts { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 7px; }
.cropacts .mini { margin-left: auto; }
.editor-slot canvas:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
/* 队列拖排序（P-01）：方块网格里用一圈描边当落点，横线在方块上会被裁掉 */
.qlist li.is-drop .qthumb { box-shadow: 0 0 0 2px var(--primary); border-color: transparent; }
.qlist li.is-drop .qname { color: var(--primary-hover); }

/* 旋转 / 翻转按钮条（C-21 / C-23） */
.rotbar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 10px; justify-content: center; }
.rotbar output { margin-left: 4px; font-variant-numeric: tabular-nums; }
.rotbar .flip-ico { display: inline-block; transform: scaleX(-1); }

/* --------------------------------- ads -------------------------------- */
.ad { display: grid; place-items: center; border: 1px dashed var(--border-strong); border-radius: var(--radius); background: var(--surface); color: var(--text-3); font-size: 11px; }
.ad-inline { margin-top: 26px; max-width: 100%; }

/* ------------------------------- content ------------------------------ */
.sec { margin-top: 38px; max-width: 720px; }
.sec h2 { font-size: 18px; font-weight: 680; margin-bottom: 12px; }
.sec p { color: var(--text-2); font-size: 14.5px; margin-bottom: 10px; }
.sec p:last-child { margin-bottom: 0; }
.bullets { padding-left: 18px; color: var(--text-2); font-size: 14.5px; display: grid; gap: 6px; }
.bullets li::marker { color: var(--primary); }
.note { font-size: 13px; color: var(--text-3); background: var(--surface); border-left: 3px solid var(--primary); padding: 9px 12px; border-radius: 0 7px 7px 0; }
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid #f3f4f6; white-space: nowrap; }
th { background: var(--surface); font-weight: 650; font-size: 12.5px; color: var(--text-2); }
tbody tr:last-child td { border-bottom: 0; }
td { color: var(--text-2); font-variant-numeric: tabular-nums; }

/* --------------------------------- faq -------------------------------- */
.faq { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: grid; }
.faq details { border-top: 1px solid #f3f4f6; }
.faq details:first-child { border-top: 0; }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 15px; cursor: pointer; list-style: none; font-size: 14px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: var(--surface); }
.faq .chev { color: var(--text-3); flex: none; transition: transform 0.16s; }
.faq details[open] .chev { transform: rotate(180deg); }
.faq-a { padding: 0 15px 14px; font-size: 13.5px; color: var(--text-2); }
.faq-a p { margin: 0 0 8px; }
.faq-a p:last-child { margin-bottom: 0; }

/* -------------------------------- steps ------------------------------- */
.steps { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .steps { grid-template-columns: repeat(3, 1fr); gap: 22px; } }
.step-n { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 9px; }
.step h3 { font-size: 14px; font-weight: 650; margin-bottom: 4px; }
.step p { font-size: 13.5px; color: var(--text-2); }

/* ------------------------------- related ------------------------------ */
.rellist { list-style: none; display: grid; gap: 8px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .rellist { grid-template-columns: 1fr 1fr; } }
.rellist a { display: flex; align-items: center; gap: 8px; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 13.5px; color: var(--text-2); background: #fff; }
.rellist a:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.rellist svg { color: var(--primary); flex: none; }

/* 体积索引：17 个纯数字，用密排小格子；390px 宽能排 3 列，桌面 6–7 列 */
.sizelist { grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 6px; margin-top: 14px; }
.sizelist a { justify-content: center; padding: 7px 6px; font-variant-numeric: tabular-nums; letter-spacing: 0.2px; }

/* -------------------------------- footer ------------------------------ */
.ftr { border-top: 1px solid var(--border); background: var(--surface); margin-top: 56px; }
.ftr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; padding: 34px 0 26px; }
@media (min-width: 760px) { .ftr-grid { grid-template-columns: repeat(4, 1fr); } }
.ftr h4 { font-size: 13px; font-weight: 680; margin-bottom: 10px; }
.ftr ul { list-style: none; display: grid; gap: 6px; }
.ftr ul a { font-size: 13px; color: var(--text-2); }
.ftr ul a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 2px; }
.ftr-bot { display: flex; flex-direction: column; gap: 6px; padding: 16px 0 26px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-3); }
@media (min-width: 640px) { .ftr-bot { flex-direction: row; align-items: center; justify-content: space-between; } }
.ftr-bot a { color: var(--text-3); }
.ftr-bot a:hover { color: var(--text-2); }

/* ------------------------------- home grid ---------------------------- */
.toolgrid { display: grid; gap: 14px; grid-template-columns: 1fr; margin-top: 26px; }
@media (min-width: 560px) { .toolgrid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .toolgrid { grid-template-columns: repeat(3, 1fr); } }
.toolcard { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: #fff; display: block; color: var(--text); transition: border-color 0.15s, box-shadow 0.15s; }
.toolcard:hover { border-color: var(--primary); box-shadow: 0 4px 14px rgba(14, 165, 233, 0.1); }
.toolcard .tc-ico { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 9px; background: var(--primary-light); color: var(--primary); margin-bottom: 10px; }
.toolcard h3 { font-size: 14.5px; font-weight: 650; }
.toolcard p { font-size: 13px; color: var(--text-2); margin-top: 4px; }
.toolcard .tc-meta { font-size: 11.5px; color: var(--text-3); margin-top: 10px; font-variant-numeric: tabular-nums; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}