/* ==========================================================================
   jsscapp.com — 名爵挑战赛车
   骨架：赛道计时板（timing board）· 沥青黑 + 方格旗 + 分段刻度
   ========================================================================== */

body.tr-body { background: #f4f4f1; }

.tr-hero { position: relative; background: #121415; color: #f4f4f1; overflow: hidden; }
.tr-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(-52deg, rgba(255, 255, 255, .03) 0 3px, transparent 3px 16px),
    radial-gradient(900px 460px at 88% 0%, rgba(232, 56, 13, .24), transparent 60%);
}
.tr-hero .container { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 52px; align-items: center; padding: 70px 0 74px; }
.tr-lap { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .26em; color: #ff5a2c; }
.tr-lap::before { content: ""; width: 28px; height: 10px; background: repeating-linear-gradient(90deg, #f4f4f1 0 5px, #121415 5px 10px); }
.tr-hero h1 { margin-top: 20px; font-size: clamp(32px, 4.4vw, 56px); line-height: 1.1; letter-spacing: -.03em; }
.tr-hero h1 small { display: block; margin-top: 14px; font-family: var(--sans-num); font-size: .38em; letter-spacing: .3em; color: rgba(244, 244, 241, .45); font-weight: 500; }
.tr-lead { margin-top: 22px; max-width: 38ch; font-size: 15px; line-height: 2.05; color: rgba(244, 244, 241, .7); }
.tr-lead b { color: #fff; }
.tr-hero .hero-actions { margin-top: 30px; }
.tr-hero .btn-ghost { color: #f4f4f1; border-color: rgba(244, 244, 241, .28); }
.tr-hero .btn-ghost:hover { border-color: #f4f4f1; }
.tr-hero .btn-room strong { color: #d7ef4b; }
.tr-figure { margin: 0; }
.tr-figure img { width: 100%; height: auto; border-radius: 10px; border: 1px solid rgba(255, 255, 255, .1); }

/* 分段刻度条 */
.tr-scale { background: #0b0d0e; border-top: 1px solid rgba(255, 255, 255, .07); }
.tr-scale .container { display: flex; gap: 0; }
.tr-scale div { flex: 1; padding: 18px 20px; border-right: 1px solid rgba(255, 255, 255, .07); position: relative; }
.tr-scale div:last-child { border-right: 0; }
.tr-scale b { display: block; font-family: var(--sans-num); font-size: 13px; letter-spacing: .14em; color: #ff5a2c; }
.tr-scale span { display: block; margin-top: 2px; font-size: 12.5px; color: rgba(244, 244, 241, .58); }
.tr-scale div::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: var(--w, 40%); background: #d7ef4b; }
.tr-scale div:nth-child(1) { --w: 22%; }
.tr-scale div:nth-child(2) { --w: 38%; }
.tr-scale div:nth-child(3) { --w: 54%; }
.tr-scale div:nth-child(4) { --w: 70%; }
.tr-scale div:nth-child(5) { --w: 88%; }

/* 区块 */
.tr-sec { padding: 78px 0; }
.tr-sec.alt { background: #e9eae4; border-block: 1px solid var(--line-2); }
.tr-sec.black { background: #121415; color: #f4f4f1; }
.tr-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 38px; border-bottom: 2px solid var(--ink); padding-bottom: 16px; }
.tr-head .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: .24em; color: var(--accent); text-transform: uppercase; }
.tr-head h2 { margin-top: 8px; font-size: clamp(23px, 2.9vw, 32px); letter-spacing: -.02em; }
.tr-head p { max-width: 40ch; font-size: 13.5px; line-height: 1.9; color: var(--muted); }
.tr-sec.black .tr-head { border-bottom-color: rgba(244, 244, 241, .2); }
.tr-sec.black .tr-head p { color: rgba(244, 244, 241, .55); }

/* 五段拆解 */
.sectors { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.sectors article { padding: 24px 18px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 6px; position: relative; }
.sectors article::before { content: ""; position: absolute; left: 0; top: 0; right: 0; height: 3px; background: var(--accent); opacity: .55; }
.sectors article:nth-child(2)::before { background: #0f8f83; }
.sectors article:nth-child(3)::before { background: var(--gold); }
.sectors article:nth-child(4)::before { background: #6f7d8c; }
.sectors article:nth-child(5)::before { background: #2b2f31; }
.sectors .n { font-family: var(--sans-num); font-size: 11.5px; letter-spacing: .16em; color: var(--muted-2); }
.sectors h3 { margin-top: 8px; font-size: 16px; }
.sectors p { margin-top: 8px; font-size: 12.5px; line-height: 1.85; color: var(--muted); }
.sectors .t { display: block; margin-top: 12px; font-family: var(--sans-num); font-size: 15px; color: var(--ink); letter-spacing: .04em; }

/* 计时板 */
.board { border: 1px solid rgba(255, 255, 255, .12); border-radius: 8px; overflow: hidden; background: #0a0c0d; }
.board-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; background: #171a1b; border-bottom: 1px solid rgba(255, 255, 255, .09); }
.board-head b { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: #d7ef4b; }
.board-head span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; color: rgba(244, 244, 241, .35); }
.board table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.board th, .board td { padding: 14px 20px; text-align: left; border-bottom: 1px solid rgba(255, 255, 255, .06); }
.board thead th { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: rgba(244, 244, 241, .36); font-weight: 500; }
.board tbody tr:last-child td { border-bottom: 0; }
.board tbody tr.me { background: rgba(232, 56, 13, .1); }
.board td.pos { font-family: var(--sans-num); font-size: 18px; color: rgba(244, 244, 241, .5); width: 64px; }
.board tr.me td.pos { color: #ff5a2c; }
.board td.name { color: #f4f4f1; }
.board td.lap { font-family: var(--sans-num); font-size: 15px; letter-spacing: .04em; color: #d7ef4b; }
.board td.gap { font-family: var(--sans-num); color: rgba(244, 244, 241, .55); }
.board-note { padding: 12px 20px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em; color: rgba(244, 244, 241, .32); border-top: 1px solid rgba(255, 255, 255, .06); }

/* 规则 */
.rules { counter-reset: rl; display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
.rules > div { counter-increment: rl; display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line-2); }
.rules > div::before { content: counter(rl, decimal-leading-zero); font-family: var(--sans-num); font-size: 20px; color: var(--accent); font-weight: 700; }
.rules h3 { font-size: 15.5px; }
.rules p { margin-top: 5px; font-size: 13.5px; line-height: 1.9; color: var(--muted); }

/* 模式 */
.modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); background: var(--paper-2); }
.modes article { padding: 30px 26px; border-right: 1px solid var(--line-2); }
.modes article:last-child { border-right: 0; }
.modes .tag3 { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--muted-2); }
.modes h3 { margin-top: 10px; font-size: 19px; }
.modes p { margin-top: 10px; font-size: 13.5px; line-height: 1.95; color: var(--muted); }
.modes dl { margin: 16px 0 0; display: grid; gap: 8px; }
.modes dt { font-size: 11.5px; letter-spacing: .06em; color: var(--muted-2); }
.modes dd { margin: 2px 0 0; font-size: 13px; color: var(--ink-2); }/* 跑一圈的流程 */
.runline { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; position: relative; padding-top: 34px; }
.runline::before { content: ""; position: absolute; left: 8%; right: 8%; top: 12px; height: 2px; background: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 18px); }
.runline article { position: relative; padding: 0 16px 0 0; }
.runline article::before {
  content: ""; position: absolute; left: 0; top: -28px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--paper); border: 3px solid var(--accent);
}
.runline article:nth-child(2)::before { border-color: #0f8f83; }
.runline article:nth-child(3)::before { border-color: var(--gold); }
.runline article:nth-child(4)::before { border-color: #6f7d8c; }
.runline article:nth-child(5)::before { border-color: #2b2f31; }
.runline b { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--muted-2); }
.runline h3 { margin-top: 8px; font-size: 15.5px; }
.runline p { margin-top: 6px; font-size: 12.5px; line-height: 1.85; color: var(--muted); }

/* 成绩怎么读 */
.readlap { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.readlap article { padding: 26px 24px; background: var(--paper-2); border: 1px solid var(--line); border-top: 3px solid var(--ink); }
.readlap .big { font-family: var(--sans-num); font-size: 32px; line-height: 1; letter-spacing: .02em; }
.readlap .big small { font-size: .42em; color: var(--muted-2); letter-spacing: .1em; margin-left: 4px; }
.readlap h3 { margin-top: 12px; font-size: 15.5px; }
.readlap p { margin-top: 6px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.readlap article:nth-child(2) { border-top-color: #0f8f83; }
.readlap article:nth-child(3) { border-top-color: var(--accent); }

/* 失误 */
.mistakes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mistakes article { padding: 22px 22px 22px 60px; position: relative; background: var(--paper-2); border: 1px solid var(--line); border-radius: 6px; }
.mistakes article b { position: absolute; left: 20px; top: 22px; font-family: var(--sans-num); font-size: 20px; color: rgba(232, 56, 13, .4); }
.mistakes h3 { font-size: 15px; }
.mistakes p { margin-top: 6px; font-size: 13px; line-height: 1.9; color: var(--muted); }

/* 赛前设置 */
.setup { display: grid; grid-template-columns: 1fr 1fr; gap: 0 36px; }
.setup li { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line-2); font-size: 13.5px; line-height: 1.85; color: var(--ink-2); }
.setup li::before { content: "▣"; font-size: 11px; color: var(--accent); line-height: 2; }
.setup b { color: var(--ink); }

/* 阶梯 */
.ladder { display: grid; gap: 8px; }
.ladder div { display: grid; grid-template-columns: 110px minmax(0, 1fr) 84px; gap: 18px; align-items: center; }
.ladder b { font-family: var(--sans-num); font-size: 14px; letter-spacing: .08em; }
.ladder .bar { height: 10px; background: rgba(15, 19, 21, .07); border-radius: 5px; overflow: hidden; }
.ladder .bar i { display: block; height: 100%; border-radius: 5px; background: #2b2f31; }
.ladder div:nth-child(2) .bar i { background: #6f7d8c; }
.ladder div:nth-child(3) .bar i { background: var(--gold); }
.ladder div:nth-child(4) .bar i { background: var(--accent); }
.ladder div:nth-child(5) .bar i { background: linear-gradient(90deg, var(--accent), #d7ef4b); }
.ladder span { font-size: 12px; color: var(--muted); text-align: right; }

/* 术语 */
.lex { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.lex div { padding: 16px 0; border-bottom: 1px solid var(--line-2); }
.lex dt { font-size: 14.5px; font-weight: 700; }
.lex dd { margin: 4px 0 0; font-size: 13px; line-height: 1.9; color: var(--muted); }

/* 相关 */
.tr-rel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tr-rel a { padding: 22px 20px; border: 1px solid var(--line); background: var(--paper-2); display: flex; justify-content: space-between; align-items: baseline; gap: 10px; font-size: 14.5px; transition: border-color .18s, transform .18s; }
.tr-rel a span { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--muted-2); }
.tr-rel a:hover { border-color: var(--ink); transform: translateY(-2px); }

/* 黑区内的通用件 */
.tr-sec.black .faq { border-top-color: rgba(244, 244, 241, .16); }
.tr-sec.black .faq details { border-bottom-color: rgba(244, 244, 241, .08); }
.tr-sec.black .faq summary { color: #f4f4f1; }
.tr-sec.black .faq .a { color: rgba(244, 244, 241, .6); }
.tr-sec.black .faq .a a { color: #d7ef4b; border-bottom-color: rgba(215, 239, 75, .3); }

@media (max-width: 1000px) {
  .tr-hero .container { grid-template-columns: minmax(0, 1fr); gap: 32px; padding: 46px 0 52px; }
  .tr-figure { max-width: 540px; }
  .tr-scale .container { flex-wrap: wrap; }
  .tr-scale div { flex: 1 0 33%; border-bottom: 1px solid rgba(255, 255, 255, .07); }
  .sectors { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tr-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .modes { grid-template-columns: minmax(0, 1fr); }
  .modes article { border-right: 0; border-bottom: 1px solid var(--line-2); }
  .runline { grid-template-columns: 1fr 1fr; gap: 24px 0; padding-top: 0; }
  .runline::before { display: none; }
  .runline article::before { display: none; }
  .readlap { grid-template-columns: minmax(0, 1fr); }
  .rules, .mistakes, .setup, .lex { grid-template-columns: minmax(0, 1fr); }
  .tr-rel { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 680px) {
  .tr-sec { padding: 54px 0; }
  .tr-scale div { flex: 1 0 50%; }
  .sectors { grid-template-columns: 1fr 1fr; }
  .board { overflow-x: auto; }
  .board table { min-width: 520px; }
  .ladder div { grid-template-columns: 76px minmax(0, 1fr) 62px; gap: 10px; }
  .ladder b { font-size: 12px; }
}