/* ===========================================================
   IRT-1.0 静态原型展示 — 样式表
   设计语言依据 Figma 原型：深蓝灰顶栏 / 亮蓝主色 / 高密度后台表格
   =========================================================== */

:root {
  --nav-bg: #2b3643;
  --nav-bg-2: #333f4e;
  --primary: #1a90ff;
  --primary-dark: #0f7fe6;
  --primary-light: #e8f3ff;
  --bg: #f4f6f9;
  --card: #ffffff;
  --border: #e7ecf2;
  --border-strong: #d9e0e9;
  --text: #303845;
  --text-2: #5c6775;
  --muted: #98a2b0;
  --head: #f7f9fc;
  --green-bg: #e8f8ee;
  --green: #16a34a;
  --orange-bg: #fff3e6;
  --orange: #f59a23;
  --red-bg: #ffedeb;
  --red: #f04b42;
  --gray-bg: #f0f2f5;
  --blue-bg: #e9f3ff;
  --radius: 3px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text);
  background: #eceff3;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--primary); text-decoration: none; }
h1,h2,h3,h4,p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 展示框架 ---------- */
.showcase { display: flex; min-height: 100vh; }
.show-nav {
  width: 252px;
  flex: 0 0 252px;
  background: #202a36;
  color: #c8d2de;
  height: 100vh;
  overflow-y: auto;
  position: sticky;
  top: 0;
  padding-bottom: 40px;
}
.show-nav::-webkit-scrollbar { width: 6px; }
.show-nav::-webkit-scrollbar-thumb { background: #435165; border-radius: 3px; }
.show-brand { padding: 18px 18px 14px; border-bottom: 1px solid rgba(255,255,255,.09); }
.show-brand .t { color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .3px; }
.show-brand .s { color: #8b9aad; font-size: 11px; margin-top: 5px; }
.show-group { margin-top: 12px; }
.show-group > .g-title {
  padding: 8px 18px 6px;
  font-size: 11px;
  color: #7e8ea3;
  letter-spacing: .5px;
  font-weight: 600;
}
.show-link {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: #c2cdda;
  padding: 7px 18px 7px 26px;
  font-size: 12px;
  line-height: 1.5;
  position: relative;
  transition: background .15s, color .15s;
}
.show-link:hover { background: rgba(255,255,255,.06); color: #fff; }
.show-link.active { background: #2c6cd0; color: #fff; font-weight: 500; }
.show-link.active::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: #6fb2ff;
}
.show-link .idx { color: #7e8ea3; margin-right: 6px; font-size: 11px; }
.show-link.active .idx { color: #cfe4ff; }
.show-tip { padding: 16px 18px; color: #7e8ea3; font-size: 11px; line-height: 1.7; border-top: 1px solid rgba(255,255,255,.09); margin-top: 18px; }

.show-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.show-bar {
  height: 34px; flex: 0 0 34px;
  background: #fff;
  border-bottom: 1px solid #dfe4ea;
  display: flex; align-items: center; gap: 10px;
  padding: 0 16px;
  font-size: 11px; color: #7d8794;
}
.show-bar .dot { width: 7px; height: 7px; border-radius: 50%; background: #35c46a; }
.show-bar b { color: #404b59; font-weight: 600; font-size: 12px; }
.show-bar .sp { flex: 1; }
.show-bar .tag { background: #eef2f7; border-radius: 2px; padding: 2px 7px; color: #6c7887; }
.show-stage { flex: 1; padding: 18px; overflow: hidden; }
.viewport {
  background: var(--bg);
  border: 1px solid #dfe4ea;
  box-shadow: 0 2px 14px rgba(30,45,70,.08);
  min-height: calc(100vh - 88px);
  position: relative;
  overflow: hidden;
}

/* ---------- 产品顶栏 ---------- */
.topbar {
  height: 40px; background: var(--nav-bg); color: #e5eaf1;
  display: flex; align-items: center; padding: 0 16px; gap: 18px;
}
.topbar .brand { display: flex; align-items: center; gap: 9px; font-size: 12px; color: #fff; white-space: nowrap; }
.topbar .brand svg { width: 15px; height: 15px; fill: none; stroke: #dce5f0; stroke-width: 1.6; }
.topbar .hamb { width: 15px; height: 15px; stroke: #cfd9e6; stroke-width: 1.7; }
.topbar .proj { display: flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.topbar .proj .odot { width: 5px; height: 5px; border-radius: 50%; background: #ffa940; display: inline-block; }
.topbar .mainmenu { display: flex; align-items: center; gap: 0; margin-left: 6px; }
.topbar .mainmenu button {
  border: 0; background: transparent; color: #cdd6e1;
  height: 40px; padding: 0 15px; font-size: 12px; white-space: nowrap;
}
.topbar .mainmenu button:hover { color: #fff; }
.topbar .mainmenu button.active { color: #fff; background: var(--primary); }
.topbar .right { margin-left: auto; display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.topbar .bell { position: relative; width: 15px; height: 15px; stroke: #d6e0ec; fill: none; stroke-width: 1.6; }
.topbar .bell i { position: absolute; top: -3px; right: -3px; width: 6px; height: 6px; background: #ff4d4f; border-radius: 50%; }
.avatar { width: 20px; height: 20px; border-radius: 50%; background: #4a9bff; color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 600; flex: 0 0 20px; }
.topbar .uname { font-size: 12px; color: #e8eef6; }

/* ---------- 二级 tab / 面包屑 / 三级菜单 ---------- */
.subbar {
  background: #fff; border-bottom: 1px solid var(--border);
  height: 38px; display: flex; align-items: center; padding: 0 20px; gap: 4px;
}
.subbar .tab {
  border: 0; background: transparent; height: 38px; padding: 0 16px;
  color: var(--text-2); font-size: 12px; position: relative; white-space: nowrap;
}
.subbar .tab:hover { color: var(--primary); }
.subbar .tab.active { color: var(--primary); font-weight: 500; }
.subbar .tab.active::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 2px; background: var(--primary); }
.subbar .actions { margin-left: auto; display: flex; gap: 8px; }
.crumb { padding: 10px 20px 0; color: var(--muted); font-size: 12px; background: var(--bg); }
.crumb span { color: var(--text-2); }
.crumb .sep { margin: 0 7px; color: #c4ccd6; }

.workspace { display: flex; gap: 12px; padding: 12px 20px 24px; align-items: flex-start; }
.side-menu { width: 120px; flex: 0 0 120px; background: #fff; border: 1px solid var(--border); padding: 6px 0; }
.side-menu .sm-title { padding: 8px 12px; font-size: 12px; font-weight: 600; color: var(--text); }
.side-menu button {
  display: block; width: 100%; text-align: left; border: 0; background: transparent;
  padding: 8px 12px; font-size: 12px; color: var(--text-2);
}
.side-menu button:hover { color: var(--primary); }
.side-menu button.active { background: var(--primary-light); color: var(--primary); }
.work-content { flex: 1; min-width: 0; }

/* ---------- 页面通用 ---------- */
.page { display: none; }
.page.active { display: block; }
.page-head { display: flex; align-items: center; gap: 10px; padding: 14px 20px 10px; }
.page-head h2 { font-size: 14px; font-weight: 600; color: var(--text); }
.page-head .sub { color: var(--muted); font-size: 11px; }
.page-head .right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.page-body { padding: 0 20px 24px; }
.seg { display: inline-flex; border: 1px solid var(--border-strong); border-radius: var(--radius); overflow: hidden; }
.seg button { border: 0; background: #fff; color: var(--text-2); padding: 5px 12px; font-size: 12px; border-right: 1px solid var(--border-strong); }
.seg button:last-child { border-right: 0; }
.seg button.active { background: var(--primary); color: #fff; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; }
.card-head { padding: 12px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.card-head h3 { font-size: 13px; font-weight: 600; }
.card-head .desc { color: var(--muted); font-size: 11px; }
.card-head .right { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.card-body { padding: 16px; }
.card-body.tight { padding: 0; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  height: 26px; padding: 0 12px; border-radius: var(--radius);
  border: 1px solid var(--border-strong); background: #fff; color: var(--text-2);
  font-size: 12px; white-space: nowrap; line-height: 1;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); color: #fff; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.sm { height: 22px; padding: 0 9px; font-size: 11px; }
.btn.lg { height: 30px; padding: 0 18px; }
.btn.block { width: 100%; }
.btn.link { border: 0; background: transparent; color: var(--primary); height: auto; padding: 0; }
.btn.link.danger { color: var(--red); }
.btn.link.muted { color: var(--muted); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn-orange { background: #ff8f1f; border: 1px solid #ff8f1f; color: #fff; height: 26px; padding: 0 12px; border-radius: var(--radius); font-size: 12px; }

/* 表单 */
.field { display: flex; align-items: center; gap: 8px; }
.field > label { color: var(--text-2); white-space: nowrap; font-size: 12px; }
.inp, .sel, .ta {
  height: 26px; border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: #fff; padding: 0 8px; font-size: 12px; color: var(--text); outline: none;
}
.inp::placeholder, .ta::placeholder { color: #b8c0cc; }
.inp:focus, .sel:focus, .ta:focus { border-color: var(--primary); }
.sel { padding-right: 22px; appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6'><path d='M1 1l4 4 4-4' fill='none' stroke='%2398a2b0' stroke-width='1.3'/></svg>"); background-repeat: no-repeat; background-position: right 7px center; }
.ta { height: auto; padding: 7px 8px; resize: vertical; line-height: 1.6; }
.filter-bar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 12px 16px; background: #fff; border-bottom: 1px solid var(--border); }
.filter-bar .field > label { color: var(--text-2); }
.filter-bar .inp { width: 170px; }
.filter-bar .sel { width: 140px; }

.form-row { display: flex; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid #f0f2f6; }
.form-row:last-child { border-bottom: 0; }
.form-row > .lbl { width: 110px; flex: 0 0 110px; text-align: right; padding: 4px 14px 0 0; color: var(--text-2); font-size: 12px; }
.form-row > .lbl .req { color: var(--red); margin-left: 2px; }
.form-row > .ctrl { flex: 1; min-width: 0; }
.form-row .hint { color: var(--muted); font-size: 11px; line-height: 1.8; margin-top: 6px; }
.form-row .hint b { color: var(--text-2); font-weight: 400; }
.form-row .stack { display: flex; flex-direction: column; gap: 8px; }
.form-row .stack .hint { margin-top: 0; }

.radio-group { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.radio, .check { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; font-size: 12px; color: var(--text-2); white-space: nowrap; }
.radio input, .check input { position: absolute; opacity: 0; pointer-events: none; }
.radio .mark { width: 13px; height: 13px; border: 1px solid #c3ccd8; border-radius: 50%; display: inline-block; position: relative; background: #fff; }
.radio input:checked + .mark { border-color: var(--primary); }
.radio input:checked + .mark::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--primary); }
.check .mark { width: 13px; height: 13px; border: 1px solid #c3ccd8; border-radius: 2px; display: inline-block; position: relative; background: #fff; }
.check input:checked + .mark { background: var(--primary); border-color: var(--primary); }
.check input:checked + .mark::after { content: ""; position: absolute; left: 4px; top: 1px; width: 3px; height: 7px; border: solid #fff; border-width: 0 1.6px 1.6px 0; transform: rotate(42deg); }
.radio input:checked ~ .txt, .check input:checked ~ .txt { color: var(--text); }

/* 表格 */
.tbl-wrap { width: 100%; overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 12px; }
table.tbl th { background: var(--head); color: var(--text-2); font-weight: 400; text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.tbl td { padding: 10px 12px; border-bottom: 1px solid #f0f2f6; color: var(--text); vertical-align: middle; }
table.tbl tr:last-child td { border-bottom: 0; }
table.tbl tbody tr:hover { background: #fafcff; }
table.tbl td.muted, table.tbl .muted { color: var(--muted); }
table.tbl .nowrap { white-space: nowrap; }
table.tbl.compact th, table.tbl.compact td { padding: 7px 10px; }
.tbl-empty { padding: 46px 16px; text-align: center; color: var(--muted); }

/* 标签 */
.tag { display: inline-block; padding: 2px 7px; border-radius: 2px; font-size: 11px; line-height: 1.5; white-space: nowrap; }
.tag.green { background: var(--green-bg); color: var(--green); }
.tag.orange { background: var(--orange-bg); color: var(--orange); }
.tag.red { background: var(--red-bg); color: var(--red); }
.tag.gray { background: var(--gray-bg); color: #86909c; }
.tag.blue { background: var(--blue-bg); color: var(--primary); }
.tag.plain-green { background: transparent; color: var(--green); }
.tag.plain-red { background: transparent; color: var(--red); }

/* 进度条 */
.progress { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.progress .track { width: 60px; height: 4px; background: #e9edf3; border-radius: 3px; overflow: hidden; flex: 0 0 60px; }
.progress .fill { height: 100%; background: var(--primary); border-radius: 3px; }
.progress .num { color: var(--text-2); font-size: 11px; }

/* 分页 */
.pager { display: flex; align-items: center; gap: 10px; padding: 12px 16px; color: var(--text-2); font-size: 12px; }
.pager .right { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.pager .pg { min-width: 24px; height: 24px; border: 1px solid var(--border-strong); background: #fff; border-radius: var(--radius); color: var(--text-2); }
.pager .pg.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pager .pg:disabled { color: #c9d0da; }

/* 空状态 */
.empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 54px 20px; text-align: center; }
.empty .ico { width: 52px; height: 52px; border-radius: 50%; background: #f6f9fd; display: flex; align-items: center; justify-content: center; color: #9dbbe0; margin-bottom: 14px; }
.empty .ico svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.empty .ico.flat { background: transparent; width: 64px; height: 60px; color: #d7e1ee; }
.empty .ico.flat svg { width: 62px; height: 56px; stroke-width: 1.3; }
.empty h4 { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.empty p { color: var(--muted); font-size: 12px; line-height: 1.9; }
.empty .btn { margin-top: 16px; }

/* 提示条 */
.notice { padding: 9px 14px; border-radius: var(--radius); font-size: 12px; line-height: 1.7; display: flex; align-items: flex-start; gap: 8px; }
.notice.info { background: #eef6ff; color: #3b6ea8; border: 1px solid #d6e8ff; }
.notice.warn { background: #fff7e8; color: #a9762b; border: 1px solid #ffe8bb; }
.notice.error { background: #fff0ee; color: #b8443c; border: 1px solid #ffd9d4; }
.notice.success { background: #edf9f1; color: #2d8651; border: 1px solid #cfeedd; }
.notice b { font-weight: 600; }

/* 弹框 */
.modal-layer { position: absolute; inset: 0; background: rgba(38,48,62,.5); z-index: 40; display: flex; align-items: flex-start; justify-content: center; padding: 60px 20px 30px; overflow-y: auto; }
.modal-layer.hidden { display: none; }
.modal { background: #fff; border-radius: 4px; box-shadow: 0 8px 32px rgba(20,35,55,.22); width: 520px; max-width: 100%; }
.modal.wide { width: 760px; }
.modal.narrow { width: 420px; }
.modal-head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; }
.modal-head h3 { font-size: 14px; font-weight: 600; }
.modal-head .x { margin-left: auto; border: 0; background: transparent; color: var(--muted); font-size: 18px; line-height: 1; padding: 0 2px; }
.modal-head .x:hover { color: var(--text); }
.modal-body { padding: 18px; max-height: 62vh; overflow-y: auto; }
.modal-foot { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.modal .desc-list { display: grid; grid-template-columns: 110px 1fr; gap: 12px 10px; font-size: 12px; }
.modal .desc-list .k { color: var(--muted); }
.modal .desc-list .v { color: var(--text); }

/* 步骤条 */
.steps { display: flex; align-items: center; justify-content: center; gap: 0; margin: 4px 0 20px; }
.steps .step { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; white-space: nowrap; }
.steps .step .n { width: 20px; height: 20px; border-radius: 50%; border: 1px solid #d5dce6; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; background: #fff; }
.steps .step.active { color: var(--primary); }
.steps .step.active .n { background: var(--primary); border-color: var(--primary); color: #fff; }
.steps .step.done .n { background: #e8f3ff; border-color: var(--primary); color: var(--primary); }
.steps .line { width: 80px; height: 1px; background: #e0e6ee; margin: 0 12px; }

/* 上传区 */
.upload {
  border: 1px dashed #b9d6f7; background: #f2f8ff; border-radius: var(--radius);
  padding: 32px 20px; text-align: center; color: var(--text-2);
}
.upload .uico { width: 34px; height: 34px; margin: 0 auto 12px; color: var(--primary); }
.upload .uico svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; }
.upload h4 { font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.upload p { color: var(--muted); font-size: 11px; margin-bottom: 14px; }

/* 卡片视图 */
.kpi-row { display: flex; gap: 12px; margin-bottom: 14px; }
.kpi { flex: 1; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.kpi .lbl { color: var(--text-2); font-size: 12px; }
.kpi .val { font-size: 22px; font-weight: 600; margin-top: 6px; }
.kpi .val small { font-size: 11px; font-weight: 400; color: var(--muted); margin-left: 4px; }
.proj-cards { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.proj-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.proj-card .top { display: flex; align-items: flex-start; gap: 8px; }
.proj-card .code { color: var(--muted); font-size: 11px; }
.proj-card h4 { font-size: 13px; font-weight: 600; line-height: 1.6; margin: 8px 0 12px; min-height: 42px; }
.proj-card .meta { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-2); margin-bottom: 10px; }
.proj-card .foot { display: flex; align-items: center; gap: 8px; padding-top: 12px; border-top: 1px solid #f0f2f6; }

/* 配置项卡片（随机方法） */
.opt-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.opt {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 14px;
  background: #fff; cursor: pointer; position: relative;
}
.opt:hover { border-color: #b6d8ff; }
.opt.selected { border-color: var(--primary); background: #f6fbff; }
.opt h4 { font-size: 13px; font-weight: 600; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.opt p { color: var(--muted); font-size: 11px; line-height: 1.7; }
.opt .badge { font-size: 10px; color: var(--primary); border: 1px solid #bcdcff; background: #eef7ff; padding: 1px 5px; border-radius: 2px; }

/* 两栏信息卡 */
.two-col { display: grid; grid-template-columns: 1.6fr 1fr; gap: 12px; }
.kv-list { display: grid; grid-template-columns: 92px 1fr; gap: 14px 8px; font-size: 12px; align-items: baseline; }
.kv-list .k { color: var(--muted); }
.kv-list .v { color: var(--text); }
.status-box { border-left: 1px solid var(--border); padding-left: 16px; }
.status-box .row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid #f2f4f7; font-size: 12px; }
.status-box .row:last-child { border-bottom: 0; }
.status-box .row .k { color: var(--muted); white-space: nowrap; }
.status-box .row .v { text-align: right; }

/* 其它 */
.muted { color: var(--muted); }
.small { font-size: 11px; }
.mb8 { margin-bottom: 8px; }
.mb12 { margin-bottom: 12px; }
.mt12 { margin-top: 12px; }
.mt16 { margin-top: 16px; }
.flex { display: flex; align-items: center; gap: 8px; }
.flex.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }
.divider { height: 1px; background: var(--border); margin: 14px 0; }
.code-box { background: #f7f9fc; border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; font-family: Consolas, Menlo, monospace; font-size: 11px; color: #4b5a6d; line-height: 1.8; }
.link-blue { color: var(--primary); }
.orange-bar { background: #ff8f1f; color: #fff; padding: 5px 10px; font-size: 11px; display: inline-block; border-radius: 2px; }
.badge-num { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; background: #eef2f7; color: #6c7887; font-size: 11px; }

/* 工作区布局：随机配置子页带三级菜单 */
#layout.with-side { display: flex; gap: 12px; padding: 12px 20px 24px; align-items: flex-start; }
#layout.with-side #pages { flex: 1; min-width: 0; }
#layout.with-side .page-head { padding: 2px 0 10px; }
#layout.with-side .page-body { padding: 0; }
#layout.with-side .page-head .right { margin-left: auto; }
#pages { min-width: 0; }
#modalHost:empty { display: none; }
.viewport .modal-layer { position: absolute; }
@media (max-width: 1100px) {
  .show-nav { width: 210px; flex-basis: 210px; }
  .proj-cards { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .two-col { grid-template-columns: 1fr; }
}