/* ============================================================
   品牌星球 · 改版设计系统 (v4 handoff → Nuxt)
   黑白灰 · 直角 · MiSans + Archivo · 作用域收在 .rd 下
   来源: design_handoff v4;已去除实时时钟与议题订阅
   ============================================================ */
.bs-historical-rd{--paper:#FAFAFA; --panel:#F2F2F2; --ink:#141414; --mut:#585858; --faint:#6B6B67;
    --line:#E4E4E4; --line2:#EDEDED;
    --acc:#141414; --acc-soft:#EAEAEA; --acc-deep:#2C2C2C; --char:#191919;
    --serif:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
    --sans:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
    --lat:"Helvetica Neue",Arial,sans-serif;}

.bs-historical-rd{-webkit-font-smoothing:antialiased}
.bs-historical-rd ::selection{background:var(--ink);color:#FFFFFF}
.bs-historical-rd{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.65}
.bs-historical-rd *{box-sizing:border-box;margin:0;padding:0}
.bs-historical-rd a:focus-visible,.bs-historical-rd button:focus-visible,.bs-historical-rd input:focus-visible,.bs-historical-rd textarea:focus-visible,.bs-historical-rd select:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.bs-historical-rd main:focus{outline:none}
.bs-historical-rd .skip-link{position:fixed;left:16px;top:10px;z-index:200;transform:translateY(-160%);background:var(--ink);color:#fff;padding:10px 15px;font-size:13px;font-weight:800;transition:transform .16s ease}
.bs-historical-rd .skip-link:focus{transform:translateY(0);outline:2px solid #fff;outline-offset:-4px}
.bs-historical-rd ::-webkit-scrollbar{width:11px;height:11px}
.bs-historical-rd ::-webkit-scrollbar-thumb{background:#C9C9C9;border:3px solid var(--paper)}
.bs-historical-rd ::-webkit-scrollbar-thumb:hover{background:#9A9A9A}
.bs-historical-rd a{color:inherit;text-decoration:none}
.bs-historical-rd button{font-family:var(--sans)}
.bs-historical-rd .wrap{max-width:1200px;margin:0 auto;padding:0 clamp(18px,3.4vw,52px)}
.bs-historical-rd .view{display:none}
.bs-historical-rd .view.active{display:block;animation:bs-historical-fadeUp .5s cubic-bezier(.2,.7,.2,1)}
@keyframes bs-historical-fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes bs-historical-tickmove{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes bs-historical-spin{to{transform:rotate(360deg)}}
.bs-historical-rd .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.bs-historical-rd .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
.bs-historical-rd .reveal{opacity:1;transform:none;transition:none}
.bs-historical-rd .skip-link{transition:none}
}
.bs-historical-rd 
  .util{border-bottom:1px solid var(--line)}
.bs-historical-rd .util .wrap{display:flex;justify-content:flex-end;align-items:center;height:34px;
    font-family:var(--lat);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bs-historical-rd .util .clock{font-variant-numeric:tabular-nums;color:var(--ink)}
.bs-historical-rd .util .wrap{justify-content:flex-end;gap:24px}
.bs-historical-rd .util-links{display:flex;align-items:center;gap:22px;font-size:10px}
.bs-historical-rd .util-links a{color:var(--mut);transition:color .15s}
.bs-historical-rd .util-links a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .topbar{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line)}
.bs-historical-rd .navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:9px;background:none;border:none;cursor:pointer}
.bs-historical-rd .navtoggle span{display:block;width:22px;height:2px;background:var(--ink);transition:transform .25s ease,opacity .2s ease}
.bs-historical-rd .topbar.navopen .navtoggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.bs-historical-rd .topbar.navopen .navtoggle span:nth-child(2){opacity:0}
.bs-historical-rd .topbar.navopen .navtoggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.bs-historical-rd .topbar .wrap{display:flex;align-items:center;gap:30px;height:66px}
.bs-historical-rd .logo{display:flex;align-items:center;gap:10px;cursor:pointer;white-space:nowrap}
.bs-historical-rd .logo img{height:30px;width:auto;display:block}
.bs-historical-rd .logo b{font-family:var(--serif);font-weight:900;font-size:23px;letter-spacing:.02em}
.bs-historical-rd .logo span{font-family:var(--lat);font-weight:700;font-size:11px;letter-spacing:.24em;color:var(--faint)}
@media(max-width:560px){.bs-historical-rd .logo img{height:24px}}
.bs-historical-rd nav{background:transparent}
.bs-historical-rd nav.main{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:500;flex:1;background:transparent;align-self:center;height:auto;min-height:0;pointer-events:none}
.bs-historical-rd nav.main a{color:var(--mut);cursor:pointer;display:flex;align-items:center;gap:7px;padding:3px 0;transition:color .18s;pointer-events:auto}
.bs-historical-rd nav.main a:hover{color:var(--ink)}
.bs-historical-rd nav.main a.on{color:var(--ink);font-weight:700}
.bs-historical-rd nav.main a.on::before{content:"";width:7px;height:7px;background:var(--acc)}
.bs-historical-rd nav.main a.dis{color:var(--faint);cursor:help}
.bs-historical-rd .topbar .langsw{display:inline-flex;align-items:center;gap:7px;font-family:var(--lat);font-size:12.5px;font-weight:700;letter-spacing:.04em;white-space:nowrap}
.bs-historical-rd .topbar .langsw a{color:var(--mut);transition:color .18s}
.bs-historical-rd .topbar .langsw a:hover{color:var(--ink)}
.bs-historical-rd .topbar .langsw .sep{color:var(--line);font-weight:400}
.bs-historical-rd .topbar .langsw .cur{color:var(--ink);cursor:default}
.bs-historical-rd .topbar .search-entry{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:0 0 34px;color:var(--mut);border:1px solid transparent;transition:color .18s,border-color .18s,background .18s}
.bs-historical-rd .topbar .search-entry svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.bs-historical-rd .topbar .search-entry:hover,.bs-historical-rd .topbar .search-entry.on{color:var(--ink);border-color:var(--line);background:var(--panel)}
.bs-historical-rd .topbar .account-entry{display:flex;align-items:center;flex:0 0 auto}
.bs-historical-rd .topbar .login-entry{display:inline-flex;align-items:center;justify-content:center;height:34px;padding:0 16px;
    border:1px solid var(--ink);background:transparent;color:var(--ink);font-size:13px;font-weight:700;cursor:pointer;
    transition:background .18s,color .18s}
.bs-historical-rd .topbar .login-entry:hover{background:var(--ink);color:var(--paper)}
.bs-historical-rd .topbar .profile-entry{display:inline-flex;align-items:center;gap:8px;min-width:0;color:var(--ink);font-size:13px;font-weight:700}
.bs-historical-rd .topbar .profile-entry img{width:30px;height:30px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.bs-historical-rd .topbar .profile-entry span{max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bs-historical-rd .badge{font-family:var(--lat);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--paper);
    background:var(--ink);padding:5px 12px;white-space:nowrap}
.bs-historical-rd #toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);opacity:0;
    background:var(--ink);color:var(--paper);font-size:13px;padding:10px 20px;pointer-events:none;
    transition:all .25s ease;z-index:99}
.bs-historical-rd #toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.bs-historical-rd 
  .ticker{background:var(--ink);color:#FFFFFF;overflow:hidden;white-space:nowrap;border-bottom:1px solid var(--line)}
.bs-historical-rd .ticker .in{display:inline-flex;align-items:center;padding:9px 0;animation:bs-historical-tickmove 44s linear infinite;
    font-family:var(--lat);font-size:12.5px;font-weight:600;letter-spacing:.06em}
.bs-historical-rd .ticker b{padding:0 22px;font-weight:800;text-transform:uppercase}
.bs-historical-rd .ticker span{opacity:.75}
.bs-historical-rd 
  .sec{padding:clamp(44px,5vw,76px) 0 clamp(48px,5.5vw,84px)}
.bs-historical-rd .sechead{display:flex;align-items:baseline;justify-content:space-between;gap:22px;flex-wrap:wrap;
    border-top:1px solid var(--line);padding-top:14px;margin-bottom:clamp(24px,2.6vw,38px)}
.bs-historical-rd .sechead .l{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.bs-historical-rd .sechead .n{font-family:var(--lat);font-weight:800;font-size:15px;color:var(--ink)}
.bs-historical-rd .sechead h2{font-family:var(--serif);font-weight:900;font-size:clamp(19px,2vw,27px);letter-spacing:-.01em}
.bs-historical-rd .sechead .k{font-family:var(--lat);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);font-weight:700}
.bs-historical-rd .sechead .note{font-size:13px;color:var(--mut)}
.bs-historical-rd .sechead .note em{font-style:normal;color:var(--ink);cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .kicker{font-family:var(--lat);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink);font-weight:800;margin:0 0 18px;display:flex;align-items:center;gap:10px}
.bs-historical-rd .kicker::before{content:"";width:9px;height:9px;background:var(--ink);animation:bs-historical-spin 12s linear infinite}
.bs-historical-rd .crumb{font-size:12.5px;color:var(--faint);padding:18px 0 0;font-family:var(--sans);height:auto!important;min-height:0;line-height:1.5}
.bs-historical-rd .crumb a{color:var(--faint);cursor:pointer}
.bs-historical-rd .crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .crumb em{font-style:normal;color:var(--ink);font-weight:600}
.bs-historical-rd .sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.bs-historical-rd .collection-status{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-family:var(--lat);font-size:11px;letter-spacing:.05em;color:var(--faint);text-transform:uppercase}
.bs-historical-rd .collection-status strong{color:var(--ink);font-size:12px}
.bs-historical-rd .is-loading{opacity:.5;transition:opacity .15s}
.bs-historical-rd .collection-error{margin:0 0 20px;padding:14px 16px;border-left:2px solid var(--ink);background:var(--panel);color:var(--mut);font-size:13px}
.bs-historical-rd 
  .chip{display:inline-block;font-family:var(--lat);font-size:10px;font-weight:800;letter-spacing:.1em;
    padding:4px 10px;text-transform:uppercase;border:1px solid var(--line);color:var(--ink)}
.bs-historical-rd .chip.st1{border-color:var(--faint);color:var(--mut)}
.bs-historical-rd .chip.st2{border-color:var(--mut);background:var(--mut);color:#FFFFFF}
.bs-historical-rd .chip.st3{background:var(--ink);color:var(--paper)}
.bs-historical-rd .chip.ever{background:var(--ink);color:var(--paper)}
.bs-historical-rd .chip.soft{border-color:var(--line);color:var(--mut)}
.bs-historical-rd .btn{display:inline-block;font-size:15px;font-weight:700;padding:15px 32px;cursor:pointer;letter-spacing:.01em;
    border:1.5px solid var(--ink);transition:all .18s ease}
.bs-historical-rd .btn.pri{background:var(--ink);color:var(--paper)}
.bs-historical-rd .btn.pri:hover{background:var(--acc-deep);border-color:var(--acc-deep)}
.bs-historical-rd .btn.sec{background:transparent;color:var(--ink)}
.bs-historical-rd .btn.sec:hover{background:var(--ink);color:#FFFFFF}
.bs-historical-rd .thumb{background:#EBEBEB;position:relative;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(20,20,20,.05)}
.bs-historical-rd .thumb::before{content:"BRANDSTAR";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-family:var(--lat);font-weight:800;font-size:clamp(10px,1vw,12.5px);letter-spacing:.34em;color:#C7C7C7;white-space:nowrap}
.bs-historical-rd .thumb::after{content:"图";position:absolute;left:12px;bottom:10px;font-family:var(--sans);font-size:10px;font-weight:700;letter-spacing:.16em;color:#B2B2B2}
.bs-historical-rd .thumb image-slot{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.bs-historical-rd .thumb:has(image-slot)::before, .bs-historical-rd .thumb:has(image-slot)::after{content:none}
.bs-historical-rd .lrow .thumb::before{font-size:8.5px;letter-spacing:.12em}
.bs-historical-rd .lrow .thumb::after{display:none}
.bs-historical-rd 
  .cover{background:var(--char);color:#fff;position:relative;overflow:hidden;cursor:pointer;display:flex;flex-direction:column;justify-content:flex-end;min-height:360px;padding:26px 28px 26px;transition:transform .22s ease,box-shadow .22s ease}
.bs-historical-rd .cover:hover{transform:translateY(-4px);box-shadow:0 26px 54px -30px rgba(0,0,0,.6)}
.bs-historical-rd .cover .cv-top{position:absolute;top:22px;left:28px;right:28px;display:flex;justify-content:space-between;align-items:center;z-index:2}
.bs-historical-rd .cover .cv-idx{font-family:var(--lat);font-size:11px;font-weight:700;letter-spacing:.14em;color:rgba(255,255,255,.5)}
.bs-historical-rd .cover .cv-mark{position:absolute;top:44%;left:50%;transform:translate(-50%,-50%);font-family:var(--lat);font-weight:800;letter-spacing:.32em;font-size:12px;color:rgba(255,255,255,.10);white-space:nowrap}
.bs-historical-rd .cover .cv-k{font-family:var(--lat);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.55);font-weight:700;margin-bottom:12px}
.bs-historical-rd .cover h3{font-family:var(--sans);font-weight:900;font-size:clamp(26px,2.5vw,36px);line-height:1.12;letter-spacing:-.015em;margin-bottom:12px;text-wrap:balance}
.bs-historical-rd .cover p{font-size:14px;line-height:1.6;color:rgba(255,255,255,.72)}
.bs-historical-rd .cover .cv-cta{align-self:flex-start;margin-top:18px;font-family:var(--lat);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid rgba(255,255,255,.45);padding-bottom:3px}
.bs-historical-rd .chip.inv{background:#fff;color:var(--char);border-color:#fff}
/* 深色封面铺真实背景图 + 遮罩(白字可读),内容层置于遮罩之上 */
.bs-historical-rd .cover .cv-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.bs-historical-rd .cover.hasimg::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(20,20,20,.35) 0%,rgba(20,20,20,.55) 55%,rgba(20,20,20,.86) 100%)}
.bs-historical-rd .cover .cv-body{position:relative;z-index:2}
.bs-historical-rd .track{display:flex;gap:4px}
.bs-historical-rd .track i{height:5px;flex:1;background:var(--line)}
.bs-historical-rd .track i.on{background:var(--acc)}
.bs-historical-rd 
  .hero{padding:clamp(24px,4.5vw,64px) 0 clamp(40px,4.5vw,64px);border-bottom:1px solid var(--line)}
/* Hero 两栏:左文右图(最新研究大图),借鉴 WGSN 首页 */
.bs-historical-rd .hero .hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(28px,4vw,64px);align-items:center}
@media(max-width:900px){.bs-historical-rd .hero .hero-grid{grid-template-columns:1fr}}
.bs-historical-rd .hero-feature{position:relative;display:block;overflow:hidden;background:#141414;align-self:center}
/* 图按自身 16:9 显示(不拉满整列高度),尺寸更协调;box 与源同比 → object-fit:cover 不裁切、完整含右下角 logo */
.bs-historical-rd .hero-feature img{width:100%;aspect-ratio:16/9;height:auto;object-fit:cover;display:block;transition:transform .5s ease}
.bs-historical-rd .hero-feature:hover img{transform:scale(1.04)}
.bs-historical-rd .hero-feature .hf-cap{position:absolute;left:0;right:0;bottom:0;padding:clamp(16px,1.6vw,22px);display:flex;flex-direction:column;gap:6px;background:linear-gradient(180deg,rgba(20,20,20,0) 0%,rgba(20,20,20,.82) 100%);color:#fff}
.bs-historical-rd .hero-feature .hf-tag{font-family:var(--lat);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.78);font-weight:700}
.bs-historical-rd .hero-feature .hf-title{font-family:var(--serif);font-weight:900;font-size:clamp(15px,1.3vw,18.5px);line-height:1.3;text-wrap:balance}
.bs-historical-rd .hero h1{font-family:var(--sans);font-weight:900;font-size:clamp(23px,3.3vw,44px);line-height:1.12;letter-spacing:-.02em;max-width:820px;margin:0 0 22px;text-align:justify}
.bs-historical-rd .hero h1 .em{color:var(--faint)}
.bs-historical-rd .hero .lede{font-size:clamp(16px,1.3vw,18.5px);color:#3A3A38;max-width:680px;margin:0 0 30px;text-align:justify}
.bs-historical-rd .hero .ctas{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.bs-historical-rd .hero .alt{font-size:13px;color:var(--faint);margin-left:8px}
.bs-historical-rd .stats{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}
.bs-historical-rd .stat{padding:22px 22px 20px;border-left:1px solid var(--line)}
.bs-historical-rd .stat:first-child{border-left:none;padding-left:0}
.bs-historical-rd .stat b{font-family:var(--lat);font-weight:800;font-size:clamp(30px,3.2vw,52px);letter-spacing:-.02em;font-variant-numeric:tabular-nums;display:block;line-height:1}
.bs-historical-rd .stat span{font-size:12.5px;color:var(--mut)}
.bs-historical-rd .intelligence-strip{background:#F5F5F3;border-top:1px solid var(--line)}
.bs-historical-rd .intelligence-strip .stats{border-bottom:0}
.bs-historical-rd .intelligence-strip .stat:last-child b{font-size:clamp(22px,2.2vw,34px);line-height:1.15}
.bs-historical-rd .mustread-sec{padding-top:clamp(42px,4.5vw,68px);background:#fff}
.bs-historical-rd .mustread-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(310px,.9fr);gap:clamp(24px,3vw,44px);align-items:stretch}
.bs-historical-rd .mustread-lead{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(230px,.8fr);background:var(--ink);color:#fff;min-height:350px;overflow:hidden}
.bs-historical-rd .mustread-lead>.thumb{height:100%;min-height:350px}
.bs-historical-rd .mustread-lead>.thumb .thumb-img{transition:transform .5s ease}
.bs-historical-rd .mustread-lead:hover>.thumb .thumb-img{transform:scale(1.035)}
.bs-historical-rd .mustread-lead-copy{padding:clamp(24px,2.8vw,40px);display:flex;flex-direction:column;justify-content:flex-end}
.bs-historical-rd .mustread-type{font-family:var(--lat);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.56);font-weight:800}
.bs-historical-rd .mustread-lead h3{font-family:var(--serif);font-size:clamp(24px,2.5vw,35px);line-height:1.2;margin:14px 0 12px;text-wrap:balance}
.bs-historical-rd .mustread-lead p{font-size:13px;line-height:1.65;color:rgba(255,255,255,.68);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bs-historical-rd .mustread-lead b{font-size:12px;margin-top:22px}
.bs-historical-rd .mustread-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.bs-historical-rd .mustread-item{display:grid;grid-template-columns:38px 1fr;gap:12px;padding:15px 0;border-bottom:1px solid var(--line);flex:1}
.bs-historical-rd .mustread-rank{font-family:var(--lat);font-weight:800;font-size:20px;color:#A3A39E;line-height:1.15}
.bs-historical-rd .mustread-item p{font-family:var(--lat);font-size:9.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--faint);margin-bottom:5px}
.bs-historical-rd .mustread-item h3{font-family:var(--serif);font-size:16px;line-height:1.42}
.bs-historical-rd .mustread-item:hover h3{text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .mustread-all{font-family:var(--lat);font-size:10.5px;letter-spacing:.08em;font-weight:800;padding-top:16px;text-transform:uppercase}
.bs-historical-rd .boards{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line)}
.bs-historical-rd .board{background:var(--panel);border-left:1px solid var(--line);padding:26px 24px 20px;cursor:pointer;position:relative;overflow:hidden;transition:background .18s}
.bs-historical-rd .board:first-child{border-left:none}
.bs-historical-rd .board:hover{background:var(--acc-soft)}
.bs-historical-rd .board .num{transition:color .18s}
.bs-historical-rd .board:hover .num{color:rgba(20,20,20,.10)}
.bs-historical-rd .board .num{position:absolute;right:8px;top:-14px;font-family:var(--lat);font-size:88px;font-weight:800;letter-spacing:-.04em;color:rgba(20,19,16,.06);pointer-events:none}
.bs-historical-rd .board .bk{font-family:var(--lat);font-size:10px;letter-spacing:.16em;color:var(--mut);font-weight:800;text-transform:uppercase}
.bs-historical-rd .board h3{font-family:var(--serif);font-size:23px;margin:10px 0 14px;font-weight:900}
.bs-historical-rd .board .board-outcome{font-size:13px;line-height:1.5;color:var(--ink);font-weight:700;margin:-5px 0 16px;min-height:39px}
.bs-historical-rd .board ul{list-style:none;font-size:13.5px;color:var(--mut)}
.bs-historical-rd .board li{padding:8px 0;border-top:1px solid var(--line2);display:flex;justify-content:space-between;align-items:center;gap:8px}
.bs-historical-rd .board li:hover{color:var(--ink)}
.bs-historical-rd .board li .arr{color:var(--faint);font-family:var(--lat)}
.bs-historical-rd .icards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.bs-historical-rd .icards.icards3{grid-template-columns:repeat(3,1fr)}
@media(max-width:880px){.bs-historical-rd .icards.icards3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.bs-historical-rd .icards.icards3{grid-template-columns:1fr}}
.bs-historical-rd .icard{background:var(--panel);border:1px solid var(--line);padding:20px 20px 18px;cursor:pointer;display:flex;flex-direction:column;gap:12px;transition:all .18s}
.bs-historical-rd .icard:hover{border-color:#CFCFCF;transform:translateY(-4px);box-shadow:0 16px 36px -28px rgba(0,0,0,.28)}
.bs-historical-rd .icard h2,.bs-historical-rd .icard h3,.bs-historical-rd .icard h4{font-family:var(--serif);font-size:22px;font-weight:900;line-height:1.3}
.bs-historical-rd .icard p{font-size:13px;color:var(--mut);line-height:1.6;flex:1}
.bs-historical-rd .icard .im{font-family:var(--lat);font-size:11px;letter-spacing:.04em;color:var(--faint);display:flex;justify-content:space-between;font-variant-numeric:tabular-nums;text-transform:uppercase}
.bs-historical-rd .egrid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:16px}
.bs-historical-rd .ecard{background:var(--panel);border:1px solid var(--line);overflow:hidden;cursor:pointer;transition:all .18s;display:flex;flex-direction:column}
.bs-historical-rd .ecard:hover{border-color:#CFCFCF;transform:translateY(-4px);box-shadow:0 16px 36px -28px rgba(0,0,0,.28)}
.bs-historical-rd .ecard .thumb{height:auto!important;aspect-ratio:3/2}
.bs-historical-rd .ecard .pad{padding:18px 20px 16px;flex:1}
.bs-historical-rd .ecard .yr{font-family:var(--lat);font-size:11px;color:var(--faint);margin-left:10px;letter-spacing:.06em}
.bs-historical-rd .ecard h2,.bs-historical-rd .ecard h3,.bs-historical-rd .ecard h4{font-family:var(--serif);font-size:22px;font-weight:900;margin:10px 0 6px;line-height:1.3}
.bs-historical-rd .ecard.big h2,.bs-historical-rd .ecard.big h3,.bs-historical-rd .ecard.big h4{font-size:21px}
.bs-historical-rd .ecard p{font-size:13px;color:var(--mut)}
/* WGSN 卡片增强:分类标签+日期一行、hover 图片放大、摘要两行截断、featured 大卡 */
.bs-historical-rd .ecard .cmeta{display:flex;align-items:center;gap:10px;margin:0}
.bs-historical-rd .ecard .cmeta .chip{padding:2px 9px;font-size:10.5px}
.bs-historical-rd .ecard .cmeta .yr{margin-left:0}
.bs-historical-rd .ecard .pad p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bs-historical-rd .ecard .thumb-img{transition:transform .5s ease}
.bs-historical-rd .ecard:hover .thumb-img{transform:scale(1.04)}
.bs-historical-rd .ecard.feat{display:grid;grid-template-columns:1.6fr 1fr;overflow:hidden;margin-bottom:16px}
.bs-historical-rd .ecard.feat .thumb{aspect-ratio:16/9;height:100%!important}
.bs-historical-rd .ecard.feat .pad{align-self:center;padding:clamp(20px,3vw,44px)}
.bs-historical-rd .ecard.feat h2,.bs-historical-rd .ecard.feat h3,.bs-historical-rd .ecard.feat h4{font-size:clamp(22px,2.2vw,32px);margin:8px 0 8px;line-height:1.2}
.bs-historical-rd .ecard.feat p{font-size:14.5px;-webkit-line-clamp:3}
@media(max-width:720px){.bs-historical-rd .ecard.feat{grid-template-columns:1fr}.bs-historical-rd .ecard.feat .thumb{height:auto!important;aspect-ratio:16/9}}
.bs-historical-rd .latest{display:grid;grid-template-columns:2fr 1fr;gap:clamp(24px,3vw,48px)}
.bs-historical-rd .lrow{display:flex;gap:18px;padding:16px 0;border-top:1px solid var(--line);cursor:pointer;align-items:center}
.bs-historical-rd .lrow:hover h3,.bs-historical-rd .lrow:hover h4{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd .lrow .thumb{width:120px;height:80px;flex:0 0 auto}
.bs-historical-rd .lrow h3,.bs-historical-rd .lrow h4{font-family:var(--serif);font-size:18px;font-weight:700;margin:0 0 5px;line-height:1.4;transition:color .15s}
.bs-historical-rd .lrow .m{font-family:var(--lat);font-size:11px;letter-spacing:.04em;color:var(--faint);text-transform:uppercase}
.bs-historical-rd .lrow .m i{font-style:normal;color:var(--ink);font-weight:700}
.bs-historical-rd .newsbox{background:var(--ink);color:var(--paper);padding:22px 24px;height:100%}
.bs-historical-rd .newsbox .nb-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 6px}
.bs-historical-rd .newsbox .nb-title{font-family:var(--lat);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.72);margin:0;font-weight:700}
.bs-historical-rd .newsbox .nb-all{font-family:var(--lat);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.5);font-weight:700;white-space:nowrap;transition:color .15s}
.bs-historical-rd .newsbox .nb-all:hover{color:#fff}
/* display:block 关键:.nrow 是 <a>(默认 inline),不加会让 padding 失效、border-top 压到上一行日期上 */
.bs-historical-rd .newsbox .nrow{display:block;padding:12px 0;border-top:1px solid rgba(255,255,255,.16);font-size:13.5px;line-height:1.5;color:var(--paper);cursor:pointer;transition:color .15s}
.bs-historical-rd .newsbox .nrow:visited,.bs-historical-rd .newsbox .nrow:hover,.bs-historical-rd .newsbox .nrow:active,.bs-historical-rd .newsbox .nrow:focus-visible{color:var(--paper)}
.bs-historical-rd .newsbox .nrow:hover{text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .newsbox .nd{font-family:var(--lat);font-size:10.5px;color:rgba(255,255,255,.5);display:block;margin-top:3px;letter-spacing:.06em;text-transform:uppercase}
.bs-historical-rd .methods{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.bs-historical-rd .mcard{background:var(--panel);border:1px solid var(--line);padding:18px 17px;cursor:pointer;transition:all .18s}
.bs-historical-rd .mcard:hover{border-color:#CFCFCF;transform:translateY(-4px);box-shadow:0 16px 34px -26px rgba(0,0,0,.26)}
.bs-historical-rd .mcard .mn{font-family:var(--lat);font-size:10px;color:var(--faint);font-weight:800;letter-spacing:.12em}
.bs-historical-rd .mcard h3,.bs-historical-rd .mcard h4{font-family:var(--serif);font-size:18px;font-weight:900;margin:9px 0 6px}
.bs-historical-rd .mcard p{font-size:12.5px;color:var(--mut);line-height:1.55}
/* 图片背景卡(icard/mcard):品牌高清图铺底 + 深色遮罩 + 白字(borrow topys,别让整站全是文字) */
.bs-historical-rd .icard.img, .bs-historical-rd .mcard.img{position:relative;overflow:hidden;color:#fff;background:var(--char);border:none}
.bs-historical-rd .icard.img{min-height:238px;justify-content:flex-end}
.bs-historical-rd .mcard.img{min-height:188px;display:flex;flex-direction:column;justify-content:flex-end}
.bs-historical-rd .icard.img .cardbg, .bs-historical-rd .mcard.img .cardbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transition:transform .35s ease}
.bs-historical-rd .icard.img::after, .bs-historical-rd .mcard.img::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(20,20,20,.12) 0%,rgba(20,20,20,.5) 55%,rgba(20,20,20,.88) 100%)}
.bs-historical-rd .icard.img > *, .bs-historical-rd .mcard.img > *{position:relative;z-index:2}
.bs-historical-rd .icard.img:hover .cardbg, .bs-historical-rd .mcard.img:hover .cardbg{transform:scale(1.05)}
.bs-historical-rd .icard.img h3,.bs-historical-rd .icard.img h4,.bs-historical-rd .mcard.img h3,.bs-historical-rd .mcard.img h4{color:#fff}
.bs-historical-rd .icard.img p, .bs-historical-rd .mcard.img p{color:rgba(255,255,255,.82)}
.bs-historical-rd .icard.img .im, .bs-historical-rd .mcard.img .mn{color:rgba(255,255,255,.66)}
.bs-historical-rd .icard.img .chip{background:#fff;color:var(--char);border-color:#fff}
.bs-historical-rd .icard.img .track i{background:rgba(255,255,255,.28)}
.bs-historical-rd .icard.img .track i.on{background:#fff}
.bs-historical-rd 
  .dhead{padding:34px 0 14px}
.bs-historical-rd .dhead h1, .bs-historical-rd .ihead h1{font-family:var(--serif);font-weight:900;letter-spacing:-.02em;font-size:clamp(27px,3.6vw,52px);line-height:1.08;margin:14px 0 16px;max-width:900px;text-wrap:balance}
.bs-historical-rd .dhead .lede, .bs-historical-rd .ihead .sub{font-size:17px;color:#3A3A38;max-width:720px;margin:0 0 20px;text-wrap:pretty}
.bs-historical-rd .qs{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 10px}
.bs-historical-rd .q{font-size:13px;background:var(--panel);border:1px solid var(--line);padding:8px 16px;color:#3A3A38}
.bs-historical-rd .q b{color:var(--ink);font-family:var(--lat)}
.bs-historical-rd .grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.bs-historical-rd .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.bs-historical-rd .fchip{font-family:var(--lat);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
    background:transparent;color:var(--ink);border:1px solid var(--line);padding:7px 15px;cursor:pointer;transition:all .15s}
.bs-historical-rd .fchip:hover{background:var(--ink);border-color:var(--ink);color:#FFFFFF}
.bs-historical-rd .facets{display:flex;flex-wrap:wrap;gap:16px;align-items:center;border:1px solid var(--line);background:var(--panel);padding:13px 18px;margin-bottom:10px;font-size:13px}
.bs-historical-rd .facets .fl{font-family:var(--lat);color:var(--faint);font-size:10px;letter-spacing:.16em;text-transform:uppercase;font-weight:800;margin-right:2px}
.bs-historical-rd .fbtn{min-height:44px;border:1px solid var(--line);background:transparent;padding:5px 14px;font-size:12.5px;color:#3A3A38;cursor:pointer;transition:all .15s}
.bs-historical-rd .fbtn:hover{border-color:var(--ink);color:var(--ink)}
.bs-historical-rd .fbtn.on{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.bs-historical-rd .fbtn.timeon{background:var(--mut);border-color:var(--mut);color:#FFFFFF}
.bs-historical-rd .alist .arow{display:grid;grid-template-columns:1fr auto auto auto;gap:20px;align-items:center;
    padding:15px 4px;border-top:1px solid var(--line);cursor:pointer;font-size:15.5px}
.bs-historical-rd .alist .arow:hover .t{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd .alist .t{font-family:var(--serif);font-weight:700;transition:color .15s}
.bs-historical-rd .alist .tag{font-family:var(--lat);font-size:10.5px;color:var(--mut);letter-spacing:.08em;text-transform:uppercase}
.bs-historical-rd .alist .yr{font-family:var(--lat);font-size:12px;color:var(--faint);font-variant-numeric:tabular-nums}
.bs-historical-rd .alist .arow.hid{display:none}
.bs-historical-rd .ihead{padding:40px 0 30px;border-bottom:1px solid var(--line)}
.bs-historical-rd .ihead .upd{font-family:var(--lat);font-size:11.5px;letter-spacing:.08em;color:var(--mut);margin-top:14px;text-transform:uppercase;font-weight:700}
.bs-historical-rd .markers{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);margin:26px 0 0}
.bs-historical-rd .marker{background:var(--panel);border-left:1px solid var(--line);padding:16px 18px 15px}
.bs-historical-rd .marker:first-child{border-left:none}
.bs-historical-rd .marker .ml{font-family:var(--lat);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);font-weight:800}
.bs-historical-rd .marker .mv{font-family:var(--serif);font-size:19px;font-weight:900;margin-top:5px}
.bs-historical-rd .marker .mv.sig{color:var(--ink);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.bs-historical-rd .marker .track{margin-top:9px}
.bs-historical-rd .ibody{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(26px,3vw,44px);padding:36px 0}
.bs-historical-rd .ibody h2, .bs-historical-rd .ibody h3, .bs-historical-rd .ibody h5, .bs-historical-rd .rel h2, .bs-historical-rd .rel h3, .bs-historical-rd .rel h5, .bs-historical-rd .sidebl h2, .bs-historical-rd .sidebl h3, .bs-historical-rd .sidebl h5{font-family:var(--lat);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin:0 0 14px;font-weight:800}
.bs-historical-rd .ev{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:baseline;padding:13px 2px;border-top:1px solid var(--line);cursor:pointer;font-size:15.5px}
.bs-historical-rd .ev:hover .et{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd .ev .ey{font-family:var(--lat);font-size:12px;color:var(--faint);font-variant-numeric:tabular-nums}
.bs-historical-rd .ev .et{font-family:var(--serif);font-weight:700;transition:color .15s}
.bs-historical-rd .ev .ek{font-family:var(--lat);font-size:9.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);border:1px solid var(--ink);padding:3px 8px;white-space:nowrap}
.bs-historical-rd .ev .ek.sig{color:var(--mut);border-color:var(--line)}
.bs-historical-rd .mix{margin:26px 0 0}
.bs-historical-rd .mix .mrow{display:grid;grid-template-columns:96px 1fr 30px;gap:12px;align-items:center;font-size:12.5px;color:var(--mut);padding:5px 0;font-variant-numeric:tabular-nums}
.bs-historical-rd .mix .bar{height:8px;background:var(--line2);overflow:hidden}
.bs-historical-rd .mix .bar i{display:block;height:100%;background:var(--ink)}
.bs-historical-rd .verdict{background:var(--ink);color:#FFFFFF;padding:22px 24px;font-size:15px;line-height:1.65}
.bs-historical-rd .verdict .vl{font-family:var(--lat);font-size:10px;letter-spacing:.16em;text-transform:uppercase;opacity:.8;font-weight:800;margin-bottom:8px}
.bs-historical-rd .acts{margin:20px 0 0;list-style:none;font-size:14px}
.bs-historical-rd .acts li{padding:10px 0 10px 24px;border-top:1px solid var(--line);position:relative;color:#3A3A38}
.bs-historical-rd .acts li::before{content:"→";position:absolute;left:0;color:var(--ink);font-weight:700;font-family:var(--lat)}
.bs-historical-rd .sidebl{background:var(--panel);border:1px solid var(--line);padding:20px 22px;margin-top:22px}
.bs-historical-rd .rrow{padding:12px 0;border-top:1px solid var(--line2);cursor:pointer}
.bs-historical-rd .rrow:hover .rt{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd .rrow .rt{font-family:var(--serif);font-size:15px;font-weight:700;line-height:1.45;transition:color .15s}
.bs-historical-rd .rrow .rm{font-family:var(--lat);font-size:10.5px;color:var(--faint);margin-top:3px;letter-spacing:.06em;text-transform:uppercase}
.bs-historical-rd .followbtn{width:100%;margin-top:22px;text-align:center}
.bs-historical-rd .ahead{padding:36px 0 28px;border-bottom:1px solid var(--line)}
.bs-historical-rd .ahead h1{font-family:var(--serif);font-size:clamp(28px,6.4vw,56px);font-weight:900;letter-spacing:.005em;line-height:1.18;margin:14px 0 16px;max-width:960px;text-wrap:balance}
.bs-historical-rd .ahead .dek{font-size:17.5px;color:#3A3A38;max-width:740px;margin:0 0 18px;text-wrap:pretty}
.bs-historical-rd .ahead .meta{font-family:var(--lat);font-size:11.5px;letter-spacing:.08em;color:var(--faint);display:flex;gap:18px;flex-wrap:wrap;text-transform:uppercase}
.bs-historical-rd .atags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.bs-historical-rd .atag{font-size:12px;border:1px solid var(--line);background:var(--panel);padding:5px 14px;cursor:pointer;color:#3A3A38;transition:all .15s}
.bs-historical-rd .atag b{font-weight:700}
.bs-historical-rd .atag.i{border:1px solid var(--line);color:var(--ink);font-weight:700}
.bs-historical-rd .atag:hover{border-color:var(--ink);color:var(--ink)}
.bs-historical-rd .atag.i:hover{background:var(--ink);color:#FFFFFF}
.bs-historical-rd .abody{display:grid;grid-template-columns:1.5fr .9fr;gap:clamp(28px,3.4vw,52px);padding:38px 0}
.bs-historical-rd .prose{font-size:16.5px;line-height:1.95;color:#26241E}
.bs-historical-rd .prose p{margin:0 0 24px;text-wrap:pretty}
.bs-historical-rd .prose .cap{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:var(--faint);margin:-16px 0 26px;letter-spacing:.04em}
.bs-historical-rd .prose .thumb{aspect-ratio:16/9;height:auto;margin:8px 0 12px}
.bs-historical-rd .note{font-size:12px;color:var(--faint);border-left:2px solid var(--line);padding-left:12px;margin:28px 0 0}
.bs-historical-rd .issuecard{background:var(--ink);color:var(--paper);padding:22px 24px;cursor:pointer;transition:background .18s}
.bs-historical-rd .issuecard:hover{background:var(--acc-deep)}
.bs-historical-rd .issuecard .il{font-family:var(--lat);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:#B9B9B4;font-weight:800}
.bs-historical-rd .issuecard h4{font-family:var(--serif);font-size:24px;margin:10px 0 8px;font-weight:900}
.bs-historical-rd .issuecard p{font-size:13px;color:rgba(255,255,255,.75);line-height:1.6}
.bs-historical-rd .issuecard .im2{font-family:var(--lat);font-size:11px;letter-spacing:.08em;color:#FFFFFF;margin-top:12px;font-weight:700;text-transform:uppercase;text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd .rel{margin-top:26px}
.bs-historical-rd .rel .why{font-family:var(--lat);font-size:10.5px;letter-spacing:.06em;color:var(--acc);margin:-8px 0 10px;text-transform:uppercase;font-weight:700}
.bs-historical-rd .bmeta{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--lat);font-size:11.5px;letter-spacing:.06em;color:var(--mut);margin:2px 0 18px;text-transform:uppercase}
.bs-historical-rd .bmeta span{border-left:1px solid var(--line);padding-left:10px}
.bs-historical-rd .quote{font-family:var(--serif);border-left:3px solid var(--ink);padding:8px 0 8px 20px;font-size:20px;font-weight:700;line-height:1.7;margin:0 0 18px}
.bs-historical-rd .quote .src{font-family:var(--sans);font-weight:400;font-size:12px;color:var(--faint);margin-top:8px}
/* 页脚:黑底(借鉴 WGSN /en 底部)。左=关于/合作,右=关注 + LOGO(LOGO 居最右) */
.bs-historical-rd footer.site{background:#111111;border-top:none;padding:clamp(44px,4.5vw,72px) 0 clamp(30px,3vw,44px);margin-top:0;color:rgba(255,255,255,.6)}
/* 四块(关于/合作/关注/LOGO)沿整行均匀分布,LOGO 落在最右 */
.bs-historical-rd footer.site .fcols{display:flex;justify-content:space-between;align-items:flex-start;gap:clamp(24px,3vw,48px);flex-wrap:wrap}
.bs-historical-rd footer.site .fcol .fhead{font-family:var(--sans);font-size:12.5px;font-weight:700;letter-spacing:.06em;color:#fff;margin:0 0 14px}
.bs-historical-rd footer.site .fcol a,.bs-historical-rd footer.site .fcol .fstatic{display:flex;align-items:center;min-height:34px;font-size:13px;line-height:1.35;color:rgba(255,255,255,.7);padding:5px 0;transition:color .15s}
.bs-historical-rd footer.site .fcol a{cursor:pointer}
.bs-historical-rd footer.site .fcol a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.bs-historical-rd footer.site .foot-brand{display:flex;align-items:flex-start}
.bs-historical-rd footer.site .foot-logo{height:clamp(34px,3.2vw,48px);width:auto;display:block;filter:brightness(0) invert(1)}
.bs-historical-rd footer.site .copyright{margin-top:clamp(34px,4vw,56px);padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.62)}
.bs-historical-rd footer.site .copyright{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.bs-historical-rd footer.site .copyright a{color:rgba(255,255,255,.62)}
.bs-historical-rd footer.site .copyright a:hover{color:#fff}
/* 移动端页脚:紧凑排布——关于/合作 两列并排,关注整宽+社媒横排,别拉太长 */
@media(max-width:640px){
  .bs-historical-rd footer.site{padding:clamp(32px,7vw,44px) 0 28px}
  .bs-historical-rd footer.site .fcols{flex-direction:row;flex-wrap:wrap;gap:26px 14px}
  .bs-historical-rd footer.site .fcol{flex:1 1 28%;min-width:92px}
  .bs-historical-rd footer.site .fcol a,.bs-historical-rd footer.site .fcol .fstatic{min-height:44px}
  .bs-historical-rd footer.site .fsocial{flex-direction:column;gap:12px;margin-top:6px}
  .bs-historical-rd footer.site .foot-brand{flex:0 0 100%;justify-content:center;margin-top:10px}
}
.bs-historical-rd 
  .hero-cover{background:var(--char);color:#fff;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.bs-historical-rd .hero-cover .wrap{padding-top:clamp(40px,5vw,76px);padding-bottom:clamp(40px,5vw,76px);position:relative;z-index:1}
.bs-historical-rd .hero-cover .hc-top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:clamp(30px,4.5vw,60px)}
.bs-historical-rd .hero-cover .hc-kick{font-family:var(--lat);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.6);font-weight:700}
.bs-historical-rd .hero-cover h1{font-family:var(--sans);font-weight:900;font-size:clamp(28px,4.6vw,60px);line-height:1.04;letter-spacing:-.028em;margin:0 0 20px;max-width:18ch;text-wrap:balance}
.bs-historical-rd .hero-cover .hc-sub{font-size:clamp(15px,1.25vw,18px);line-height:1.6;color:rgba(255,255,255,.75);max-width:640px;margin:0 0 18px;text-wrap:pretty}
.bs-historical-rd .hero-cover .hc-upd{font-family:var(--lat);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.55);font-weight:700}
.bs-historical-rd .hero-cover .hc-mark{position:absolute;right:0;bottom:clamp(-14px,-1.4vw,-8px);font-family:var(--sans);font-weight:900;font-size:clamp(96px,17vw,240px);line-height:.72;color:rgba(255,255,255,.055);letter-spacing:-.04em;pointer-events:none;z-index:0}
.bs-historical-rd 
  .startgrid{display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(20px,2.6vw,44px);align-items:stretch}
.bs-historical-rd .cover.lead{min-height:100%}
.bs-historical-rd .picklist{display:flex;flex-direction:column;justify-content:center}
.bs-historical-rd .pick{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:baseline;padding:clamp(14px,1.6vw,20px) 0;border-top:1px solid var(--line);cursor:pointer}
.bs-historical-rd .pick:first-child{border-top:none;padding-top:0}
.bs-historical-rd .pick:last-child{padding-bottom:0}
.bs-historical-rd .pick .pn{font-family:var(--lat);font-weight:800;font-size:clamp(24px,2.2vw,32px);color:var(--faint);line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;transition:color .15s}
.bs-historical-rd .pick:hover .pn{color:var(--ink)}
.bs-historical-rd .pick .pk{font-family:var(--lat);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:700;margin-bottom:6px}
.bs-historical-rd .pick h3,.bs-historical-rd .pick h4{font-family:var(--serif);font-weight:700;font-size:clamp(17px,1.5vw,20px);line-height:1.35;transition:color .15s}
.bs-historical-rd .pick:hover h3,.bs-historical-rd .pick:hover h4{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd 
  .monthblk{margin-bottom:clamp(30px,3.6vw,52px)}
.bs-historical-rd .monthblk:last-child{margin-bottom:0}
.bs-historical-rd .monthhead{display:flex;align-items:baseline;gap:14px;border-top:1px solid var(--line);padding-top:12px;margin:0 0 2px}
.bs-historical-rd .monthhead .mo{font-family:var(--lat);font-weight:800;font-size:clamp(30px,3.2vw,48px);letter-spacing:-.02em;line-height:1;font-variant-numeric:tabular-nums}
.bs-historical-rd .monthhead .mo small{font-family:var(--lat);font-size:13px;color:var(--faint);font-weight:700;margin-left:10px;letter-spacing:.08em;text-transform:uppercase}
.bs-historical-rd .nrow2{display:grid;grid-template-columns:74px 1fr auto;gap:22px;align-items:baseline;padding:16px 2px;border-top:1px solid var(--line);cursor:pointer}
.bs-historical-rd .nrow2:hover .nt{text-decoration:underline;text-underline-offset:4px}
.bs-historical-rd .nrow2 .nday{font-family:var(--lat);font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums;letter-spacing:.02em;padding-top:3px}
.bs-historical-rd .nrow2 .nt{font-family:var(--serif);font-weight:700;font-size:clamp(16.5px,1.4vw,19px);line-height:1.4}
.bs-historical-rd .nrow2 .ni{display:inline-block;font-family:var(--lat);font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);border-bottom:1px solid var(--faint);margin-top:8px}
.bs-historical-rd .nrow2 .ntag{font-family:var(--lat);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--mut);white-space:nowrap;padding-top:4px}
.bs-historical-rd 
  .collcard{background:var(--panel);border:1px solid var(--line);padding:22px 22px 20px;cursor:pointer;display:flex;flex-direction:column;gap:10px;min-height:172px;transition:all .18s}
.bs-historical-rd .collcard:hover{border-color:#CFCFCF;transform:translateY(-4px);box-shadow:0 16px 36px -28px rgba(0,0,0,.28)}
.bs-historical-rd .collcard .ck{font-family:var(--lat);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-weight:800}
.bs-historical-rd .collcard h3,.bs-historical-rd .collcard h4{font-family:var(--serif);font-size:22px;font-weight:900;line-height:1.3}
.bs-historical-rd .collcard p{font-size:13px;color:var(--mut);line-height:1.6;flex:1}
.bs-historical-rd .collcard .cm{font-family:var(--lat);font-size:11px;letter-spacing:.04em;color:var(--faint);display:flex;justify-content:space-between;text-transform:uppercase;font-variant-numeric:tabular-nums}
@media(max-width:880px){
.bs-historical-rd .boards, .bs-historical-rd .icards, .bs-historical-rd .egrid, .bs-historical-rd .methods, .bs-historical-rd .grid3, .bs-historical-rd .stats{grid-template-columns:1fr 1fr}
.bs-historical-rd .latest, .bs-historical-rd .ibody, .bs-historical-rd .abody, .bs-historical-rd .grid2, .bs-historical-rd .startgrid, .bs-historical-rd .mustread-grid{grid-template-columns:1fr}
.bs-historical-rd .mustread-lead{grid-template-columns:1.25fr 1fr}
.bs-historical-rd .hero-cover h1{max-width:100%}
.bs-historical-rd .markers{grid-template-columns:1fr 1fr}
.bs-historical-rd .marker:nth-child(3){border-left:none;border-top:1px solid var(--line)}
.bs-historical-rd .marker:nth-child(4){border-top:1px solid var(--line)}
.bs-historical-rd .board{border-left:none;border-top:1px solid var(--line)}
.bs-historical-rd .board:first-child{border-top:none}
.bs-historical-rd nav.main{overflow-x:auto}
.bs-historical-rd .alist .arow{grid-template-columns:1fr auto}
.bs-historical-rd .alist .tag{display:none}
.bs-historical-rd .nrow2{grid-template-columns:58px 1fr;gap:14px}
.bs-historical-rd .nrow2 .ntag{display:none}
}
@media(max-width:560px){
.bs-historical-rd .boards, .bs-historical-rd .icards, .bs-historical-rd .egrid, .bs-historical-rd .methods, .bs-historical-rd .grid3, .bs-historical-rd .stats{grid-template-columns:1fr}
.bs-historical-rd .stat{border-left:none;padding-left:0}
.bs-historical-rd .intelligence-strip .stats{grid-template-columns:1fr 1fr}
.bs-historical-rd .intelligence-strip .stat{padding:18px 12px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.bs-historical-rd .intelligence-strip .stat:nth-child(odd){border-left:0}
.bs-historical-rd .intelligence-strip .stat:nth-child(-n+2){border-top:0}
.bs-historical-rd .mustread-lead{grid-template-columns:1fr}
.bs-historical-rd .mustread-lead>.thumb{height:auto;min-height:0;aspect-ratio:16/10}
.bs-historical-rd .mustread-lead-copy{padding:24px}
}

/* prefers-reduced-motion:全局降级动效(旋转小方块等) */
@media (prefers-reduced-motion: reduce) {
  .bs-historical-rd .kicker::before { animation: none !important; }
  .bs-historical-rd .view.active { animation: none !important; }
}

/* 有真实封面时隐藏占位水印 */
.bs-historical-rd .thumb.filled::before, .bs-historical-rd .thumb.filled::after { content: none; }

/* 客户品牌墙(借鉴 WGSN:暖色底 + 灰度 logo,hover 上色) */
.bs-historical-rd .logowall{background:#F4EFE8;margin-top:clamp(20px,3vw,44px)}
.bs-historical-rd .logowall .wrap{padding-top:clamp(48px,6vw,88px);padding-bottom:clamp(48px,6vw,88px)}
.bs-historical-rd .lw-title{font-family:var(--serif);font-weight:900;font-size:clamp(21px,2.5vw,32px);text-align:center;letter-spacing:-.01em;color:var(--ink)}
.bs-historical-rd .lw-sub{text-align:center;color:var(--mut);font-size:14px;margin:12px 0 clamp(32px,4vw,56px)}
.bs-historical-rd .lw-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(26px,3vw,50px) 20px;align-items:center;justify-items:center}
.bs-historical-rd .lw-item{display:flex;align-items:center;justify-content:center;height:60px;width:100%;filter:grayscale(1);opacity:.72;transition:opacity .2s ease,filter .2s ease,transform .2s ease}
.bs-historical-rd .lw-item:hover{filter:grayscale(0);opacity:1;transform:translateY(-2px)}
.bs-historical-rd .lw-item img{max-width:76%;max-height:50px;object-fit:contain}
@media(max-width:880px){.bs-historical-rd .lw-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:560px){.bs-historical-rd .lw-grid{grid-template-columns:repeat(3,1fr)}}

/* ============ 移动端优化(检查后同步) ============ */
/* 顶栏:移动端汉堡菜单(点击展开竖排下拉),稳、不挤、不藏项 */
@media(max-width:640px){
  .bs-historical-rd .util{display:none}
  .bs-historical-rd .util-links{display:none}
  .bs-historical-rd .topbar .wrap{flex-wrap:wrap;height:auto;min-height:60px;gap:0;padding-top:8px;padding-bottom:8px}
  .bs-historical-rd .topbar .logo{order:1}
  .bs-historical-rd .topbar .logo{min-height:44px;flex-shrink:0}
  .bs-historical-rd .topbar .logo img{height:24px}
  .bs-historical-rd .topbar .search-entry{order:2;margin-left:auto;width:44px;height:44px;flex-basis:44px}
  .bs-historical-rd .topbar .account-entry{order:3;margin-left:8px}
  .bs-historical-rd .topbar .login-entry{height:44px;padding:0 13px}
  .bs-historical-rd .topbar .profile-entry span{display:none}
  .bs-historical-rd .topbar .profile-entry{min-width:44px;min-height:44px;justify-content:center}
  .bs-historical-rd .navtoggle{display:flex;order:4;flex:0 0 44px;margin-left:8px;width:44px;height:44px}
  /* Keep controls on the first row; reset the legacy layout's 85px nav height. */
  .bs-historical-rd nav.main{order:5;flex:0 0 100%;width:100%;height:auto;max-height:calc(100vh - 120px);max-height:calc(100svh - 120px);flex-direction:column;align-items:stretch;gap:0;display:none;margin-top:8px;padding:2px 0 10px;border-top:1px solid var(--line);overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;pointer-events:auto}
  .bs-historical-rd .topbar.navopen nav.main{display:flex}
  .bs-historical-rd nav.main a{flex-shrink:0;padding:14px 2px;font-size:16px;min-height:50px;align-items:center;border-bottom:1px solid var(--line2)}
  .bs-historical-rd nav.main a:last-child{border-bottom:none}
  .bs-historical-rd nav.main a.on::before{display:none}
  .bs-historical-rd .topbar .badge{order:4;flex:0 0 auto;display:none;margin:12px 0 4px;align-self:flex-start}
  .bs-historical-rd .topbar.navopen .badge{display:inline-flex}
  .bs-historical-rd .topbar .langsw{order:6;display:none;margin:0;min-height:44px}
  .bs-historical-rd .topbar .langsw a{display:inline-flex;align-items:center;min-height:44px;padding:0 2px}
  .bs-historical-rd .topbar.navopen .langsw{display:inline-flex}
  /* 触控最小点击区:筛选/标签胶囊 */
  .bs-historical-rd .fbtn,.bs-historical-rd .fchip{min-height:44px;display:inline-flex;align-items:center}
  .bs-historical-rd .facets{gap:9px 8px;padding:11px 14px}
}
/* 小屏:最新深度列表行缩图 + 标题两行截断;markers 单列;栏目头收紧 */
@media(max-width:560px){
  .bs-historical-rd .lrow{gap:12px}
  .bs-historical-rd .lrow .thumb{width:100px;height:66px}
  .bs-historical-rd .lrow h3,.bs-historical-rd .lrow h4{font-size:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .bs-historical-rd .markers{grid-template-columns:1fr}
  .bs-historical-rd .markers .marker{border-left:none;border-top:1px solid var(--line)}
  .bs-historical-rd .markers .marker:first-child{border-top:none}
  .bs-historical-rd .dhead{padding:24px 0 12px}
  .bs-historical-rd .dhead .lede,.bs-historical-rd .ihead .sub{font-size:15.5px}
}
/* 最小手机:logo 墙两列,避免过小 */
@media(max-width:400px){.bs-historical-rd .lw-grid{grid-template-columns:repeat(2,1fr)}}

/* Long English feature headlines need more room than short Chinese titles. */
.bs-historical-rd .mustread-lead.mustread-lead-long{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}
.bs-historical-rd .mustread-lead-long .mustread-lead-copy{padding:clamp(22px,2.3vw,32px);min-width:0;justify-content:center}
.bs-historical-rd .mustread-lead-long h3{font-size:clamp(22px,1.8vw,28px);line-height:1.22;text-wrap:pretty;overflow-wrap:break-word}
.bs-historical-rd .mustread-lead-long>.thumb{min-height:350px}
@media(max-width:720px){.bs-historical-rd .mustread-lead.mustread-lead-long{grid-template-columns:1fr}.bs-historical-rd .mustread-lead-long>.thumb{min-height:0;aspect-ratio:16/9}.bs-historical-rd .mustread-lead-long h3{font-size:26px}}