/* ==========================================================================
   jsscapp.com — 遥遥领先
   骨架：分段板（split board）· 白底红标 + 横向时间条 + 差距刻度
   ========================================================================== */

body.yl-body { background: #fbfbf9; --yl-red: #d92b17; --yl-ink: #121212; --yl-grey: #6d6d68; }

/* Hero */
.yl-hero { position: relative; background: #fbfbf9; overflow: hidden; border-bottom: 1px solid rgba(18, 18, 18, .1); }
.yl-hero::before {
  content: ""; position: absolute; top: -140px; right: -160px; width: 560px; height: 560px;
  border-radius: 50%; border: 1px solid rgba(217, 43, 23, .18);
  box-shadow: 0 0 0 60px rgba(217, 43, 23, .035), 0 0 0 140px rgba(217, 43, 23, .025);
  pointer-events: none;
}
.yl-hero .container { position: relative; display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); gap: 52px; align-items: center; padding: 70px 0 62px; }
.yl-k { display: inline-block; padding: 5px 12px; background: var(--yl-red); color: #fff; font-family: var(--mono); font-size: 10px; letter-spacing: .22em; text-transform: uppercase; }
.yl-title { margin-top: 22px; font-size: clamp(40px, 5.6vw, 68px); line-height: 1.02; letter-spacing: -.045em; color: var(--yl-ink); }
.yl-title em { font-style: normal; color: var(--yl-red); }
.yl-title small { display: block; margin-top: 16px; font-family: var(--sans-num); font-size: .26em; font-weight: 600; letter-spacing: .34em; color: #a6a6a0; }
.yl-sub { margin-top: 24px; max-width: 40ch; font-size: 15px; line-height: 2.05; color: var(--yl-grey); }
.yl-sub b { color: var(--yl-ink); }
.yl-hero .hero-actions { margin-top: 30px; }
.yl-hero .btn-primary { background: var(--yl-red); box-shadow: 5px 5px 0 #121212; }
.yl-hero .btn-primary:hover { transform: translate(2px, 2px); box-shadow: 3px 3px 0 #121212; }
.yl-hero .btn-room strong { color: var(--yl-red); }
.yl-figure { margin: 0; }
.yl-figure img { width: 100%; height: auto; }

/* 差距条 */
.yl-gap { background: var(--yl-ink); color: #fff; overflow: hidden; }
.yl-gap .container { display: flex; align-items: stretch; justify-content: space-between; gap: 20px; padding: 0; }
.yl-gap .lead-num { display: flex; align-items: baseline; gap: 10px; padding: 20px 0; }
.yl-gap .lead-num b { font-family: var(--sans-num); font-size: 40px; line-height: 1; font-weight: 700; color: #f2c94c; }
.yl-gap .lead-num span { font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: rgba(255, 255, 255, .5); }
.yl-gap .ticks { flex: 1; align-self: center; height: 26px; background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, .35) 0 1px, transparent 1px 25px); position: relative; }
.yl-gap .ticks::after { content: ""; position: absolute; left: 0; top: 50%; width: 72%; height: 3px; background: #f2c94c; transform: translateY(-50%); }
.yl-gap .tagline { align-self: center; font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: rgba(255, 255, 255, .45); white-space: nowrap; }

/* 区块 */
.yl-sec { padding: 76px 0; }
.yl-sec.alt { background: #f3f2ed; border-block: 1px solid rgba(18, 18, 18, .08); }
.yl-head { max-width: 760px; margin-bottom: 38px; }
.yl-head.mid { margin-inline: auto; text-align: center; }
.yl-head .k { font-family: var(--mono); font-size: 10px; letter-spacing: .24em; color: var(--yl-red); text-transform: uppercase; }
.yl-head h2 { margin-top: 12px; font-size: clamp(25px, 3.1vw, 36px); line-height: 1.25; letter-spacing: -.025em; color: var(--yl-ink); }
.yl-head p { margin-top: 14px; font-size: 14px; line-height: 1.95; color: var(--yl-grey); }

/* 分段板 */
.splitboard { border-top: 2px solid var(--yl-ink); }
.sp-row { display: grid; grid-template-columns: 96px minmax(0, 1fr) 92px 72px; gap: 18px; align-items: center; padding: 18px 0; border-bottom: 1px solid rgba(18, 18, 18, .12); }
.sp-row .seg { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--yl-grey); }
.sp-row .seg b { display: block; font-family: var(--sans-num); font-size: 18px; letter-spacing: 0; color: var(--yl-ink); margin-top: 3px; }
.sp-bar { position: relative; height: 16px; background: #eceae4; overflow: hidden; }
.sp-bar i { display: block; height: 100%; background: var(--yl-ink); width: var(--w); }
.sp-row.hot .sp-bar i { background: var(--yl-red); }
.sp-row .tm { font-family: var(--sans-num); font-size: 19px; font-weight: 700; color: var(--yl-ink); text-align: right; }
.sp-row .dt { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; color: var(--yl-grey); text-align: right; }
.sp-row.hot .dt { color: var(--yl-red); }
.sp-note { margin-top: 16px; font-size: 12.5px; line-height: 1.9; color: #8a8a84; }/* 领先的三种来源 */
.sources { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid rgba(18, 18, 18, .14); background: #fff; }
.sources article { padding: 30px 26px 32px; border-right: 1px solid rgba(18, 18, 18, .1); }
.sources article:last-child { border-right: 0; }
.sources .idx { font-family: var(--sans-num); font-size: 54px; line-height: .8; font-weight: 700; color: transparent; -webkit-text-stroke: 1.2px rgba(18, 18, 18, .3); }
.sources h3 { margin-top: 18px; font-size: 17px; color: var(--yl-ink); }
.sources p { margin-top: 10px; font-size: 13px; line-height: 1.9; color: var(--yl-grey); }
.sources .stat { margin-top: 18px; padding-top: 14px; border-top: 1px dashed rgba(18, 18, 18, .18); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--yl-red); }

/* 分段表 */
.yl-body .tbl-wrap { border: 1px solid rgba(18, 18, 18, .14); background: #fff; }
.yl-body .tbl th { background: #f0eee7; color: var(--yl-ink); font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; border-bottom: 2px solid var(--yl-ink); }
.yl-body .tbl td { font-size: 13.5px; color: #4c4c47; border-bottom: 1px solid rgba(18, 18, 18, .08); }
.yl-body .tbl td:first-child { font-family: var(--sans-num); font-weight: 700; font-size: 15px; color: var(--yl-ink); }
.yl-body .tbl tr:last-child td { border-bottom: 0; }
.yl-body .tbl td em { font-style: normal; color: var(--yl-red); font-family: var(--sans-num); font-weight: 700; }

/* 守住优势 */
.defend { display: grid; gap: 0; max-width: 900px; margin: 0 auto; border-top: 1px solid rgba(18, 18, 18, .14); }
.defend article { display: grid; grid-template-columns: 54px minmax(0, 1fr) 180px; gap: 22px; align-items: start; padding: 22px 0; border-bottom: 1px solid rgba(18, 18, 18, .14); }
.defend .n { width: 34px; height: 34px; display: grid; place-items: center; background: var(--yl-red); color: #fff; font-family: var(--sans-num); font-size: 16px; font-weight: 700; }
.defend h3 { font-size: 16px; color: var(--yl-ink); }
.defend p { margin-top: 7px; font-size: 13px; line-height: 1.9; color: var(--yl-grey); }
.defend .why { font-family: var(--mono); font-size: 10px; line-height: 1.9; letter-spacing: .08em; color: #9a9a94; border-left: 2px solid #e4e2da; padding-left: 12px; }
.defend .why b { display: block; color: var(--yl-ink); letter-spacing: .14em; margin-bottom: 4px; }

/* 追与守 */
.chase { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.chase article { padding: 30px 28px; background: #fff; border: 1px solid rgba(18, 18, 18, .14); }
.chase article.dark { background: var(--yl-ink); color: #fff; border-color: var(--yl-ink); }
.chase .k { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--yl-red); }
.chase article.dark .k { color: #f2c94c; }
.chase h3 { margin-top: 10px; font-size: 20px; color: inherit; letter-spacing: -.01em; }
.chase ul { margin-top: 16px; display: grid; gap: 11px; }
.chase li { position: relative; padding-left: 18px; font-size: 13px; line-height: 1.85; color: var(--yl-grey); }
.chase article.dark li { color: rgba(255, 255, 255, .72); }
.chase li::before { content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 2px; background: var(--yl-red); }
.chase article.dark li::before { background: #f2c94c; }/* 误读 */
.misread { max-width: 900px; margin: 0 auto; border-top: 1px solid rgba(18, 18, 18, .14); }
.misread div { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 30px; padding: 20px 0; border-bottom: 1px solid rgba(18, 18, 18, .14); }
.misread dt { font-size: 14.5px; line-height: 1.7; color: #a3a39d; text-decoration: line-through; text-decoration-color: rgba(217, 43, 23, .5); }
.misread dd { font-size: 13.5px; line-height: 1.9; color: #3b3b37; }
.misread dd b { color: var(--yl-red); }

/* 引言带 */
.band { background: var(--yl-ink); color: #fff; padding: 64px 0; }
.band .container { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; }
.band p { font-size: clamp(21px, 3vw, 34px); line-height: 1.55; letter-spacing: -.02em; max-width: 22ch; }
.band p em { font-style: normal; color: #f2c94c; }
.band .sig { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: rgba(255, 255, 255, .45); text-align: right; line-height: 2; }

/* 训练 */
.drills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border: 1px solid rgba(18, 18, 18, .14); background: #fff; }
.drills article { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 16px; padding: 26px 26px; border-right: 1px solid rgba(18, 18, 18, .1); border-bottom: 1px solid rgba(18, 18, 18, .1); }
.drills article:nth-child(2n) { border-right: 0; }
.drills article:nth-child(n+3) { border-bottom: 0; }
.drills .d { font-family: var(--sans-num); font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--yl-red); }
.drills h3 { font-size: 15.5px; color: var(--yl-ink); }
.drills p { margin-top: 7px; font-size: 12.5px; line-height: 1.85; color: var(--yl-grey); }
.drills span { display: inline-block; margin-top: 10px; font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; color: #9a9a94; border: 1px solid #e2e0d8; padding: 2px 7px; }

/* 术语 */
.terms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 44px; max-width: 900px; margin: 0 auto; }
.terms div { padding: 16px 0; border-bottom: 1px solid rgba(18, 18, 18, .12); }
.terms dt { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--yl-red); }
.terms dd { margin-top: 6px; font-size: 13px; line-height: 1.8; color: #4c4c47; }

/* 版本记录 */
.yl-log { max-width: 900px; margin: 0 auto; border-top: 2px solid var(--yl-ink); }
.yl-log div { display: grid; grid-template-columns: 110px minmax(0, 1fr) 96px; gap: 22px; align-items: baseline; padding: 15px 0; border-bottom: 1px solid rgba(18, 18, 18, .12); }
.yl-log b { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: #9a9a94; }
.yl-log span { font-size: 13.5px; line-height: 1.8; color: #3b3b37; }
.yl-log em { font-style: normal; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--yl-red); text-align: right; }

/* 相关 */
.yl-rel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.yl-rel a { display: grid; gap: 6px; padding: 20px; background: #fff; border: 1px solid rgba(18, 18, 18, .14); transition: border-color .2s, transform .2s; }
.yl-rel a:hover { border-color: var(--yl-red); transform: translate(-2px, -2px); box-shadow: 3px 3px 0 rgba(217, 43, 23, .2); }
.yl-rel b { font-size: 15px; color: var(--yl-ink); }
.yl-rel span { font-size: 12px; color: #8a8a84; }

/* 页脚适配 */
.yl-body .site-cta { background: var(--yl-ink); }
.yl-body .site-cta .btn-primary { background: var(--yl-red); }
.yl-body .site-cta .btn-room { border-color: rgba(255, 255, 255, .28); }
.yl-body .faq summary { color: var(--yl-ink); }
.yl-body .faq .a { color: #4c4c47; }

@media (max-width: 900px) {
  .yl-hero .container { grid-template-columns: minmax(0, 1fr); gap: 34px; padding: 50px 0 46px; }
  .yl-figure { order: -1; }
  .yl-gap .tagline { display: none; }
  .sources { grid-template-columns: minmax(0, 1fr); }
  .sources article { border-right: 0; border-bottom: 1px solid rgba(18, 18, 18, .1); }
  .chase, .drills, .terms, .yl-rel { grid-template-columns: minmax(0, 1fr); }
  .drills article { border-right: 0; }
  .defend article { grid-template-columns: 44px minmax(0, 1fr); }
  .defend .why { grid-column: 2; }
  .band .container { grid-template-columns: minmax(0, 1fr); }
  .band .sig { text-align: left; }
}

@media (max-width: 680px) {
  .yl-sec { padding: 54px 0; }
  .sp-row { grid-template-columns: 64px minmax(0, 1fr) 66px; gap: 10px; }
  .sp-row .dt { display: none; }
  .sp-row .tm { font-size: 16px; }
  .sp-row .seg b { font-size: 15px; }
  .misread div { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .yl-log div { grid-template-columns: 78px minmax(0, 1fr); }
  .yl-log em { display: none; }
}
/* FAQ 收窄 */
.yl-body .faq { max-width: 860px; margin: 0 auto; }