/* 羽毛球拍磅数与线材选择器 · 重做版
   主题：紫 + 荧光绿（#7c3aed / #a3e635）
   骨架：三列（水平 / 打法 / 结果）+ 全宽明细
   前缀：bt-
*/
:root {
  --bt-a: #7c3aed;
  --bt-a2: #a3e635;
  --bt-a-deep: #5b21b6;
  --bt-a-soft: #f3e8ff;
  --bt-a2-soft: #ecfccb;
  --bt-bg: #faf8ff;
  --bt-card: #ffffff;
  --bt-card2: #fcfaff;
  --bt-txt: #1e1330;
  --bt-txt2: #5b4a72;
  --bt-txt3: #9385a8;
  --bt-line: #e7def5;
  --bt-line2: #f4eefc;
  --bt-ok: #3f6212;
  --bt-warn: #b45309;
  --bt-bad: #b91c1c;
  --bt-shadow: 0 1px 2px rgba(76, 29, 149, .06), 0 14px 30px -20px rgba(76, 29, 149, .45);
  --bt-r: 14px;
  --bt-r2: 10px;
}

[data-theme='dark'] .bt {
  --bt-a: #a78bfa;
  --bt-a2: #d9f99d;
  --bt-a-deep: #3b0764;
  --bt-a-soft: #2b1250;
  --bt-a2-soft: #25320f;
  --bt-bg: #120e1c;
  --bt-card: #1b1528;
  --bt-card2: #161121;
  --bt-txt: #ede6f9;
  --bt-txt2: #c1b4d6;
  --bt-txt3: #9082a6;
  --bt-line: #322747;
  --bt-line2: #241c33;
  --bt-ok: #bef264;
  --bt-warn: #fbbf24;
  --bt-bad: #f87171;
  --bt-shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 14px 30px -20px rgba(0, 0, 0, .85);
}

.bt { background: var(--bt-bg); color: var(--bt-txt); padding: 26px 0 46px; }
.bt-inner { width: min(1140px, calc(100% - 44px)); max-width: none; margin: 0 auto; }
.bt * { box-sizing: border-box; }

/* ---------- Hero ---------- */
.bt-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 24px;
  align-items: stretch;
  padding: 28px 28px 26px;
  border-radius: 22px;
  border: 1px solid var(--bt-line);
  background:
    radial-gradient(680px 260px at 4% 0%, rgba(124, 58, 237, .16), transparent 62%),
    radial-gradient(420px 220px at 100% 100%, rgba(163, 230, 53, .2), transparent 70%),
    linear-gradient(140deg, var(--bt-card) 0%, var(--bt-card2) 100%);
  box-shadow: var(--bt-shadow);
}
.bt-kicker {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .3px;
  color: var(--bt-a);
  background: var(--bt-a-soft);
  border: 1px solid color-mix(in srgb, var(--bt-a) 26%, transparent);
  padding: 5px 11px; border-radius: 999px;
}
.bt-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(26px, 3.3vw, 39px);
  line-height: 1.24; letter-spacing: -.7px; font-weight: 800;
}
.bt-hero h1 em {
  font-style: normal; display: inline-block; margin-top: 4px;
  color: var(--bt-a);
  background: linear-gradient(180deg, transparent 64%, rgba(163, 230, 53, .45) 64%);
  padding: 0 2px;
}
.bt-sub { margin: 12px 0 0; font-size: 14.5px; line-height: 1.85; color: var(--bt-txt2); max-width: 66ch; }
.bt-sub b { color: var(--bt-txt); font-weight: 700; }
.bt-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.bt-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; padding: 5px 10px; border-radius: 8px;
  background: var(--bt-card2); border: 1px solid var(--bt-line); color: var(--bt-txt2);
}
.bt-tag i { color: var(--bt-a); font-style: normal; font-weight: 800; }
.bt-hero-preset { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.bt-preset {
  border: 1px dashed color-mix(in srgb, var(--bt-a) 45%, var(--bt-line));
  background: transparent; color: var(--bt-a); cursor: pointer;
  font-size: 12.5px; font-weight: 600; padding: 7px 12px; border-radius: 9px;
  transition: background .18s, transform .12s;
}
.bt-preset:hover { background: var(--bt-a-soft); transform: translateY(-1px); }

/* 纯 CSS 球拍 + 羽毛球轨迹 */
.bt-hero-art { position: relative; min-height: 244px; }
.bt-court {
  position: absolute; inset: 0; border-radius: 18px; overflow: hidden;
  background:
    radial-gradient(380px 200px at 74% 18%, rgba(163, 230, 53, .16), transparent 70%),
    linear-gradient(160deg, #2a1150 0%, #1d0b3a 55%, #140729 100%);
  border: 1px solid rgba(255, 255, 255, .1);
}
.bt-line { position: absolute; top: 0; bottom: 0; width: 1px; background: rgba(255, 255, 255, .14); }
.bt-line.v1 { left: 38%; }
.bt-line.v2 { left: 72%; }
.bt-racket { position: absolute; left: 44px; bottom: 18px; width: 96px; height: 196px; transform: rotate(-14deg); }
.bt-racket-head {
  position: absolute; left: 5px; top: 0; width: 86px; height: 118px; border-radius: 50%;
  border: 3px solid var(--bt-a2);
  background: rgba(255, 255, 255, .05);
  box-shadow: 0 0 20px rgba(163, 230, 53, .32), inset 0 0 20px rgba(163, 230, 53, .12);
  overflow: hidden;
}
.bt-strings {
  position: absolute; inset: 6px; border-radius: 50%;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .35) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .28) 0 1px, transparent 1px 9px);
}
.bt-racket-throat {
  position: absolute; left: 50%; top: 113px; transform: translateX(-50%);
  width: 26px; height: 30px;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  background: var(--bt-a2); opacity: .85;
}
.bt-racket-shaft {
  position: absolute; left: 50%; top: 140px; transform: translateX(-50%);
  width: 5px; height: 32px; background: #c4b5fd; border-radius: 2px;
}
.bt-racket-grip {
  position: absolute; left: 50%; top: 170px; transform: translateX(-50%);
  width: 14px; height: 28px; border-radius: 4px; background: #a78bfa;
  display: flex; flex-direction: column; justify-content: space-evenly; padding: 2px 0;
}
.bt-racket-grip span { display: block; height: 2px; background: rgba(30, 19, 48, .45); }
.bt-trail { position: absolute; left: 120px; top: 26px; width: 190px; height: 120px; }
.bt-trail-dot {
  position: absolute; width: 5px; height: 5px; border-radius: 50%;
  background: var(--bt-a2); box-shadow: 0 0 10px rgba(163, 230, 53, .8);
  animation: btTrail 2.8s ease-in-out infinite;
}
.bt-trail-dot.d1 { left: 6%; top: 66%; animation-delay: 0s; }
.bt-trail-dot.d2 { left: 24%; top: 32%; animation-delay: .18s; }
.bt-trail-dot.d3 { left: 44%; top: 14%; animation-delay: .36s; }
.bt-trail-dot.d4 { left: 64%; top: 18%; animation-delay: .54s; }
.bt-trail-dot.d5 { left: 82%; top: 36%; animation-delay: .72s; }
@keyframes btTrail { 0%, 100% { opacity: .35; transform: scale(.7); } 50% { opacity: 1; transform: scale(1.25); } }
.bt-shuttle { position: absolute; right: 26px; top: 96px; width: 42px; height: 34px; transform: rotate(34deg); animation: btShuttle 4.2s ease-in-out infinite; }
.bt-shuttle-cork {
  position: absolute; left: 0; top: 9px; width: 16px; height: 16px; border-radius: 50% 50% 40% 40%;
  background: radial-gradient(circle at 34% 30%, #fef9c3, #d9f99d 60%, #a3e635);
  box-shadow: 0 0 14px rgba(163, 230, 53, .6);
}
.bt-shuttle-f { position: absolute; left: 13px; top: 0; width: 1px; height: 32px; background: rgba(233, 213, 255, .8); transform-origin: 0 50%; }
.bt-shuttle-f.s1 { transform: rotate(-26deg); }
.bt-shuttle-f.s2 { transform: rotate(-8deg); }
.bt-shuttle-f.s3 { transform: rotate(10deg); }
@keyframes btShuttle { 0%, 100% { transform: rotate(34deg) translateY(0); } 50% { transform: rotate(30deg) translateY(-10px); } }
.bt-chip {
  position: absolute; font-size: 11.5px; padding: 5px 10px; border-radius: 8px;
  background: rgba(255, 255, 255, .95); border: 1px solid rgba(0, 0, 0, .06);
  color: #3b2a58; white-space: nowrap; box-shadow: 0 10px 20px -14px #000;
}
.bt-chip b { color: #7c3aed; }
.bt-chip.c1 { left: 12px; top: 96px; animation: btFloat 4.2s ease-in-out infinite; }
.bt-chip.c2 { right: 12px; top: 150px; animation: btFloat 4.2s ease-in-out .7s infinite; }
@keyframes btFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* ---------- 三列栅格 ---------- */
.bt-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1fr) minmax(0, 1.2fr); gap: 16px; margin-top: 16px; align-items: start; }
.bt-col-a, .bt-col-b, .bt-col-c { min-width: 0; }
.bt-span3 { grid-column: 1 / -1; min-width: 0; }

.bt-card {
  position: relative;
  background: var(--bt-card);
  border: 1px solid var(--bt-line);
  border-radius: var(--bt-r);
  box-shadow: var(--bt-shadow);
  padding: 20px 20px 22px;
  overflow: hidden;
}
.bt-card::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--bt-a), var(--bt-a2));
  opacity: .9;
}
.bt-card-h { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 15px; }
.bt-card-h h2 { margin: 0; font-size: 16px; font-weight: 800; letter-spacing: -.2px; display: flex; align-items: center; gap: 8px; }
.bt-no {
  font-size: 11px; font-weight: 800; letter-spacing: .5px; color: #fff;
  background: var(--bt-a); padding: 3px 7px; border-radius: 6px;
}
[data-theme='dark'] .bt .bt-no { color: #1a1029; }
.bt-card-h small { font-size: 11.5px; color: var(--bt-txt3); text-align: right; }

.bt-field { margin-bottom: 15px; }
.bt-field.keep { margin-bottom: 0; }
.bt-label { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.bt-label label { font-size: 13.5px; font-weight: 600; color: var(--bt-txt); }
.bt-hint { font-size: 11.5px; color: var(--bt-txt3); }

.bt-seg { display: flex; gap: 5px; flex-wrap: wrap; background: var(--bt-line2); padding: 4px; border-radius: var(--bt-r2); }
.bt-seg.vertical { flex-direction: column; gap: 4px; }
.bt-segbtn {
  flex: 1 1 auto; border: 0; background: transparent; color: var(--bt-txt2); text-align: left;
  font-size: 12.5px; font-weight: 600; padding: 8px 10px; border-radius: 8px; cursor: pointer;
  transition: background .18s, color .18s;
}
.bt-seg.vertical .bt-segbtn { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.bt-seg.vertical .bt-segbtn span { font-size: 10.5px; font-weight: 500; color: var(--bt-txt3); flex: none; }
.bt-segbtn.on { background: var(--bt-card); color: var(--bt-a); box-shadow: 0 1px 3px rgba(76, 29, 149, .18); }
.bt-segbtn.on span { color: var(--bt-a); }
.bt-segbtn:hover { color: var(--bt-a); }

.bt-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.bt-control { border: 1px solid var(--bt-line); border-radius: var(--bt-r2); background: var(--bt-card2); }
.bt-control select {
  width: 100%; border: 0; background: transparent; color: var(--bt-txt);
  font-size: 13px; padding: 10px 26px 10px 11px; outline: none; cursor: pointer; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--bt-txt3) 50%), linear-gradient(135deg, var(--bt-txt3) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.bt-check { display: flex; align-items: center; gap: 9px; font-size: 12.5px; color: var(--bt-txt2); cursor: pointer; }
.bt-check input { width: 17px; height: 17px; accent-color: var(--bt-a); cursor: pointer; }

.bt-numbox { display: flex; align-items: center; border: 1px solid var(--bt-line); border-radius: var(--bt-r2); background: var(--bt-card2); overflow: hidden; }
.bt-numbox input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--bt-txt); font-size: 14px; font-weight: 700; padding: 9px 11px; outline: none; }
.bt-numbox span { padding: 0 10px; font-size: 11.5px; color: var(--bt-txt3); background: var(--bt-line2); align-self: stretch; display: flex; align-items: center; }
.bt-err { display: none; margin-top: 5px; font-size: 11.5px; color: var(--bt-bad); }
.bt-err.on { display: block; }
.bt-field.bad .bt-numbox { border-color: var(--bt-bad); box-shadow: 0 0 0 3px color-mix(in srgb, var(--bt-bad) 14%, transparent); }

.bt-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.bt-actions.tight { margin-top: 10px; }
.bt-btn {
  border: 1px solid var(--bt-line); background: var(--bt-card); color: var(--bt-txt);
  font-size: 12.5px; font-weight: 600; padding: 9px 13px; border-radius: 9px; cursor: pointer;
  transition: transform .12s, box-shadow .18s, background .18s;
}
.bt-btn:hover { transform: translateY(-1px); box-shadow: 0 7px 18px -12px rgba(76, 29, 149, .6); }
.bt-btn.primary { background: var(--bt-a); border-color: var(--bt-a); color: #fff; }
[data-theme='dark'] .bt .bt-btn.primary { color: #1a1029; }
.bt-btn.ghost { background: transparent; color: var(--bt-txt2); }
.bt-btn.small { font-size: 11.5px; padding: 6px 10px; }
.bt-msg { margin-top: 10px; font-size: 12px; color: var(--bt-txt3); min-height: 17px; }

/* ---------- 结果列 ---------- */
.bt-result {
  background: var(--bt-card); border: 1px solid var(--bt-line);
  border-radius: var(--bt-r); box-shadow: var(--bt-shadow); overflow: hidden;
}
.bt-result-h { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--bt-line2); }
.bt-result-h h2 { margin: 0; font-size: 15px; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.bt-badge { font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--bt-line2); color: var(--bt-txt3); }
.bt-badge.ok { background: color-mix(in srgb, var(--bt-ok) 16%, transparent); color: var(--bt-ok); }
.bt-badge.warn { background: color-mix(in srgb, var(--bt-warn) 16%, transparent); color: var(--bt-warn); }
.bt-badge.bad { background: color-mix(in srgb, var(--bt-bad) 14%, transparent); color: var(--bt-bad); }
.bt-badge.manual { background: var(--bt-a2-soft); color: var(--bt-ok); }

.bt-verdict { padding: 16px 18px 12px; text-align: center; background: linear-gradient(180deg, var(--bt-a-soft), transparent 92%); }
.bt-verdict-label { display: block; font-size: 11.5px; color: var(--bt-txt3); letter-spacing: .4px; }
.bt-verdict-num { display: inline-block; font-size: 44px; line-height: 1.04; font-weight: 800; color: var(--bt-a); letter-spacing: -1.6px; margin-top: 2px; }
.bt-verdict-unit { font-size: 12px; color: var(--bt-txt3); margin-left: 3px; }
.bt-verdict-sub { margin: 5px 0 0; font-size: 12px; color: var(--bt-txt2); }

.bt-gaugewrap { padding: 14px 18px 8px; }
.bt-gauge { position: relative; height: 14px; border-radius: 999px; background: var(--bt-line2); overflow: visible; }
.bt-gauge-zone { position: absolute; top: 0; bottom: 0; }
.bt-gauge-zone.z1 { left: 0; width: 33.3%; background: rgba(163, 230, 53, .28); border-radius: 999px 0 0 999px; }
.bt-gauge-zone.z2 { left: 33.3%; width: 33.4%; background: rgba(124, 58, 237, .14); }
.bt-gauge-zone.z3 { left: 66.7%; width: 33.3%; background: rgba(124, 58, 237, .3); border-radius: 0 999px 999px 0; }
.bt-gauge-band {
  position: absolute; top: -3px; height: 20px; border-radius: 999px;
  background: rgba(124, 58, 237, .32); border: 1px solid rgba(124, 58, 237, .6);
  transition: left .4s ease, width .4s ease;
}
.bt-gauge-tick { position: absolute; top: -4px; width: 1px; height: 22px; background: rgba(0, 0, 0, .22); }
[data-theme='dark'] .bt .bt-gauge-tick { background: rgba(255, 255, 255, .24); }
.bt-gauge-tick i { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); font-style: normal; font-size: 9.5px; color: var(--bt-txt3); }
.bt-gauge-marker {
  position: absolute; top: -8px; width: 3px; height: 30px; border-radius: 2px;
  background: var(--bt-a); left: 0; transition: left .4s ease;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--bt-a) 22%, transparent);
}
.bt-gauge-marker u {
  position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
  text-decoration: none; font-size: 11px; font-weight: 800; color: #fff;
  background: var(--bt-a); padding: 1px 5px; border-radius: 5px; white-space: nowrap;
}
.bt-gauge-scale { display: flex; justify-content: space-between; margin-top: 12px; font-size: 10px; color: var(--bt-txt3); }

.bt-kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--bt-line2); margin-top: 10px; }
.bt-kpi { background: var(--bt-card); padding: 10px 14px; }
.bt-kpi span { display: block; font-size: 11px; color: var(--bt-txt3); }
.bt-kpi b { display: inline-block; font-size: 17px; font-weight: 800; color: var(--bt-txt); margin-top: 2px; letter-spacing: -.4px; }
.bt-kpi small { font-size: 10.5px; color: var(--bt-txt3); margin-left: 3px; }

.bt-tension-tool { padding: 13px 18px 4px; border-top: 1px solid var(--bt-line2); }
.bt-tension-row { display: grid; grid-template-columns: 1fr 46px; gap: 10px; align-items: center; }
.bt-tension-row input[type='range'] {
  -webkit-appearance: none; appearance: none; height: 5px; border-radius: 999px;
  background: linear-gradient(90deg, var(--bt-a2), var(--bt-a)); outline: none; cursor: pointer;
}
.bt-tension-row input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--bt-a); border: 3px solid var(--bt-card); box-shadow: 0 0 0 1px var(--bt-a); cursor: pointer;
}
.bt-tension-row input[type='range']::-moz-range-thumb { width: 12px; height: 12px; border: none; border-radius: 50%; background: var(--bt-a); cursor: pointer; }
.bt-tension-val { font-size: 14px; font-weight: 800; color: var(--bt-a); text-align: right; }

.bt-strings { display: grid; gap: 8px; padding: 12px 18px 4px; }
.bt-string {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--bt-line); border-radius: 10px; padding: 9px 11px;
  background: var(--bt-card2);
}
.bt-string.main { border-color: var(--bt-a); background: var(--bt-a-soft); }
.bt-string-gauge {
  flex: none; width: 46px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; color: var(--bt-a);
  background: var(--bt-card); border: 1px solid var(--bt-line);
}
.bt-string.main .bt-string-gauge { background: var(--bt-a); color: #fff; border-color: var(--bt-a); }
[data-theme='dark'] .bt .bt-string.main .bt-string-gauge { color: #1a1029; }
.bt-string-main { min-width: 0; flex: 1; }
.bt-string-main b { display: block; font-size: 12.5px; font-weight: 700; color: var(--bt-txt); }
.bt-string-main small { display: block; font-size: 11px; color: var(--bt-txt3); margin-top: 1px; }
.bt-string-price { flex: none; font-size: 11px; color: var(--bt-txt3); text-align: right; }

.bt-mods { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 18px 2px; }
.bt-mod { font-size: 11px; padding: 4px 8px; border-radius: 999px; background: var(--bt-line2); color: var(--bt-txt2); border: 1px solid var(--bt-line); }
.bt-mod b { color: var(--bt-a); font-weight: 800; }

.bt-advice { padding: 10px 18px 14px; }
.bt-advice h3 { margin: 0 0 7px; font-size: 12.5px; font-weight: 700; }
.bt-advice ul { margin: 0; padding-left: 17px; }
.bt-advice li { font-size: 12px; line-height: 1.78; color: var(--bt-txt2); margin-bottom: 4px; }
.bt-advice li b { color: var(--bt-a); }
.bt-risk {
  margin: 0 14px 14px; padding: 10px 12px; border-radius: 9px;
  background: color-mix(in srgb, var(--bt-warn) 11%, transparent);
  border: 1px solid color-mix(in srgb, var(--bt-warn) 34%, transparent);
  font-size: 12px; line-height: 1.72; color: var(--bt-txt2);
}
.bt-risk strong { color: var(--bt-warn); margin-right: 5px; }

/* ---------- 断线卡 ---------- */
.bt-actions-bar { display: grid; grid-column: 1 / -1; }
.bt-break-card { width: 100%; }
.bt-break-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.bt-break-item { background: var(--bt-card2); border: 1px solid var(--bt-line); border-radius: 10px; padding: 12px 13px; }
.bt-break-item b { display: block; font-size: 13px; color: var(--bt-a); margin-bottom: 4px; }
.bt-break-item span { font-size: 12px; line-height: 1.7; color: var(--bt-txt3); }

/* ---------- 方案 ---------- */
.bt-plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.bt-plan {
  border: 1.5px solid var(--bt-line); border-radius: 12px; background: var(--bt-card2);
  padding: 16px 16px 14px; position: relative; transition: border-color .2s, transform .2s, box-shadow .2s;
}
.bt-plan:hover { transform: translateY(-2px); }
.bt-plan.rec { border-color: var(--bt-a); background: var(--bt-card); box-shadow: 0 0 0 3px color-mix(in srgb, var(--bt-a) 15%, transparent); }
.bt-plan-tag {
  position: absolute; right: 12px; top: -10px; font-size: 10.5px; font-weight: 800;
  color: #fff; background: var(--bt-a); padding: 3px 9px; border-radius: 999px;
}
[data-theme='dark'] .bt .bt-plan-tag { color: #1a1029; }
.bt-plan h3 { margin: 0; font-size: 16.5px; font-weight: 800; }
.bt-plan h3 i { font-style: normal; font-size: 12px; font-weight: 800; color: var(--bt-a2); margin-left: 6px; background: var(--bt-a2-soft); padding: 2px 6px; border-radius: 5px; }
[data-theme='dark'] .bt .bt-plan h3 i { color: #d9f99d; }
.bt-plan h3 span { display: block; margin-top: 3px; font-size: 11.5px; color: var(--bt-txt3); font-weight: 500; }
.bt-plan-fit { margin: 10px 0 12px; font-size: 12px; color: var(--bt-txt3); }
.bt-plan-fit b { color: var(--bt-a); font-size: 19px; letter-spacing: -.5px; }
.bt-plan dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 10px; font-size: 12.5px; }
.bt-plan dt { color: var(--bt-txt3); }
.bt-plan dd { margin: 0; text-align: right; font-weight: 600; color: var(--bt-txt); }
.bt-plan-pros { margin: 11px 0 0; font-size: 12px; line-height: 1.7; color: var(--bt-txt2); }
.bt-plan-pros em { font-style: normal; color: var(--bt-ok); font-weight: 700; }
.bt-plan-pros s { text-decoration: none; color: var(--bt-warn); font-weight: 700; }
.bt-plan-pick {
  margin-top: 12px; width: 100%; border: 1px solid var(--bt-line); border-radius: 9px;
  padding: 8px; font-size: 12.5px; font-weight: 700; cursor: pointer;
  background: var(--bt-line2); color: var(--bt-txt2);
}
.bt-plan.rec .bt-plan-pick { background: var(--bt-a); border-color: var(--bt-a); color: #fff; }
[data-theme='dark'] .bt .bt-plan.rec .bt-plan-pick { color: #1a1029; }

/* ---------- 表格 / 步骤 / 批量 / 历史 ---------- */
.bt-table-wrap { overflow-x: auto; border: 1px solid var(--bt-line); border-radius: 11px; }
.bt-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 600px; }
.bt-table th, .bt-table td { padding: 10px 13px; text-align: left; border-bottom: 1px solid var(--bt-line2); }
.bt-table th { background: var(--bt-line2); font-size: 12px; color: var(--bt-txt2); font-weight: 700; }
.bt-table td:last-child { color: var(--bt-txt3); font-size: 12px; }
.bt-table td b { color: var(--bt-a); }
.bt-table tr:last-child td { border-bottom: 0; }

.bt-steps { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.bt-steps li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; align-items: start; font-size: 13px; line-height: 1.8; color: var(--bt-txt2); }
.bt-steps li b {
  width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--bt-a2-soft); color: var(--bt-ok); font-size: 12px; font-weight: 800;
}
.bt-steps li strong { color: var(--bt-txt); font-weight: 700; }
.bt-steps li code {
  display: block; margin-top: 3px; font-size: 12px; color: var(--bt-a);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--bt-line2); padding: 4px 8px; border-radius: 6px; width: fit-content; max-width: 100%;
}

.bt-tip { margin: 0 0 10px; font-size: 12.5px; line-height: 1.75; color: var(--bt-txt3); }
.bt-tip code { font-size: 12px; background: var(--bt-line2); padding: 1px 5px; border-radius: 4px; color: var(--bt-a); }

.bt-textarea {
  width: 100%; min-height: 112px; resize: vertical;
  border: 1px solid var(--bt-line); border-radius: 11px; background: var(--bt-card2);
  color: var(--bt-txt); font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; line-height: 1.7; padding: 12px; outline: none;
}
.bt-textarea:focus { border-color: var(--bt-a); }

.bt-history { display: flex; flex-direction: column; gap: 8px; }
.bt-hist-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border: 1px solid var(--bt-line); border-radius: 10px; padding: 10px 12px;
  background: var(--bt-card2); font-size: 12.5px; color: var(--bt-txt2);
}
.bt-hist-item button {
  border: 0; background: var(--bt-a-soft); color: var(--bt-a); font-size: 12px;
  font-weight: 700; padding: 5px 10px; border-radius: 7px; cursor: pointer; flex: none;
}
.bt-empty { font-size: 12.5px; color: var(--bt-txt3); margin: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .bt-hero { grid-template-columns: 1fr; padding: 22px 20px; }
  .bt-hero-art { display: none; }
  .bt-grid { grid-template-columns: 1fr 1fr; }
  .bt-col-c { grid-column: 1 / -1; }
  .bt-break-grid { grid-template-columns: 1fr 1fr; }
  .bt-plans { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .bt-inner { width: calc(100% - 28px); }
  .bt-hero { border-radius: 16px; }
  .bt-grid { grid-template-columns: 1fr; }
  .bt-card { padding: 16px 16px 18px; }
  .bt-grid2 { grid-template-columns: 1fr; }
  .bt-break-grid { grid-template-columns: 1fr; }
  .bt-actions .bt-btn { flex: 1 1 44%; }
  .bt-verdict-num { font-size: 38px; }
  .bt-strings { padding: 10px 14px 4px; }
}

/* ---------- 打印 ---------- */
@media print {
  .bt-actions, .bt-textarea, .bt-history, .bt-hero-preset, .bt-msg, .bt-tension-tool, .bt-actions-bar, .tsk-crumb-bar { display: none !important; }
  .bt { padding: 0; background: #fff; }
  .bt-card, .bt-result { box-shadow: none; border-color: #ddd; break-inside: avoid; }
  .bt-hero { box-shadow: none; border-color: #ddd; background: #fff; }
  .bt-grid { display: block; }
  .bt-card, .bt-result { margin-bottom: 10px; }
}

/* ---------- 全局对齐：面包屑与内容同宽 ---------- */
.tsk-crumb-bar-in {
  width: min(1140px, calc(100% - 44px)) !important;
  max-width: none !important;
  margin: 0 auto !important;
  padding: 11px 0 !important;
}
.tsk-crumb { font-size: 13px; }
@media (max-width: 700px) {
  .tsk-crumb-bar-in { width: calc(100% - 28px) !important; padding: 9px 0 !important; }
}