/* अध्ययनसार Design System 2031 — UPSC Prelims Family
   Main Prelims hub + Targeted Notes hub + subject/chapter hubs.
   Centralized from the previously page-scoped presentation rules.
   Depends on tokens.css, base.css, typography.css, layout.css, components.css.
*/

/* Source family: upsc-prelims/index.html */
.pre-page{background:var(--ds-surface-soft);color:var(--ds-text);}.pre-page main{overflow:hidden;}.pre-page .primary-nav .pre-active{color:var(--blue);background:var(--ds-surface-soft);}
    .pre-hero{position:relative;padding:40px 0 88px;background:var(--ds-surface-soft);color:var(--ds-heading);}.pre-hero:before{content:"";position:absolute;inset:0;background:var(--ds-surface-soft);}.pre-hero .shell{position:relative;}.crumb{display:flex;align-items:center;gap:8px;color:var(--ds-text-muted);font-size:.72rem;margin-bottom:34px;}.crumb a{color:var(--ds-text-muted);}.hero-grid{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(330px,.82fr);gap:52px;align-items:center;}.kicker{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.08);color:var(--ds-text);font-size:.72rem;font-weight:850;}.kicker i{width:7px;height:7px;border-radius:50%;background:var(--ds-surface-soft);box-shadow:none;}.pre-hero h1{font-family:Georgia,'Noto Serif Devanagari',serif;font-size:clamp(2.65rem,5vw,4.65rem);line-height:1.04;margin:18px 0;color:var(--ds-heading);letter-spacing:-.025em;}.pre-hero h1 span{display:block;color:var(--ds-text);font-size:.55em;line-height:1.34;margin-top:10px;letter-spacing:0;}.hero-lead{max-width:760px;color:var(--ds-text);font-size:1rem;line-height:1.86;margin:0;}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px;}.hero-actions .button{min-height:46px;}.outline-light{border:1px solid rgba(255,255,255,.28);color:var(--ds-heading);background:rgba(255,255,255,.05);}.source-line{display:flex;flex-wrap:wrap;gap:13px;margin-top:19px;color:var(--ds-text-muted);font-size:.68rem;}.source-line span{display:flex;gap:6px;align-items:center;}.source-line span:before{content:"✓";color:var(--ds-text-muted);font-weight:900;}
    .date-card{background:var(--ds-surface);color:var(--ds-text);border-radius:24px;padding:26px;box-shadow:none;border:1px solid rgba(255,255,255,.8);}.date-card small{display:block;color:var(--ds-text-muted);font-size:.65rem;font-weight:850;letter-spacing:.08em;}.date-card .big-date{font-family:Georgia,'Noto Serif Devanagari',serif;color:var(--ds-text);font-size:2.25rem;line-height:1.15;margin:8px 0 5px;}.date-card>p{margin:0;color:var(--ds-text);font-size:.76rem;line-height:1.65;}.date-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:19px;}.date-row div{padding:13px;border-radius:12px;background:var(--ds-surface-soft);border:1px solid var(--ds-border);}.date-row span{display:block;color:var(--ds-text);font-size:.62rem;}.date-row strong{display:block;color:var(--ds-text);font-size:.77rem;margin-top:4px;}.status-note{margin-top:14px;padding:12px 13px;border-radius:11px;background:var(--ds-surface-soft);border:1px solid var(--ds-border);color:var(--ds-text);font-size:.69rem;line-height:1.6;}
    .quick-facts{position:relative;z-index:3;display:grid;grid-template-columns:repeat(4,1fr);margin-top:-36px;background:var(--ds-surface);border:1px solid var(--ds-border);border-radius:18px;box-shadow:none;overflow:hidden;}.quick-facts>div{display:flex;gap:12px;align-items:center;padding:19px 21px;border-right:1px solid var(--ds-border);}.quick-facts>div:last-child{border-right:0;}.qicon{width:40px;height:40px;display:grid;place-items:center;flex:none;border-radius:12px;background:var(--ds-surface-soft);color:var(--ds-text);font-weight:900;font-size:.72rem;}.quick-facts p{display:flex;flex-direction:column;margin:0;}.quick-facts small{color:var(--ds-text-muted);font-size:.65rem;}.quick-facts strong{color:var(--ds-text);font-size:.8rem;margin-top:3px;}
    .page-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:34px;padding-top:58px;padding-bottom:80px;}.toc-card{position:sticky;top:106px;padding:17px;border:1px solid var(--ds-border);border-radius:15px;background:var(--ds-surface);box-shadow:none;}.toc-card>span{display:block;color:var(--ds-text);font-size:.62rem;font-weight:850;letter-spacing:.08em;margin:2px 8px 10px;}.toc-card a{display:block;padding:8px 9px;border-radius:8px;color:var(--ds-text);font-size:.72rem;font-weight:700;line-height:1.35;}.toc-card a:hover{background:var(--ds-surface-soft);color:var(--ds-text);}.official-card{display:block;margin-top:12px;padding:15px;border-radius:13px;background:var(--ds-surface-soft);color:var(--ds-heading);}.official-card span,.official-card small{display:block;color:var(--ds-text-muted);font-size:.64rem;}.official-card strong{display:block;color:var(--ds-text);font-size:.75rem;margin:4px 0;}
    .article{min-width:0;}.section{scroll-margin-top:105px;background:var(--ds-surface);border:1px solid var(--ds-border);border-radius:18px;padding:29px;margin-bottom:18px;box-shadow:none;}.label{display:inline-block;color:var(--ds-text);font-size:.66rem;font-weight:900;letter-spacing:.07em;text-transform:uppercase;margin-bottom:7px;}.section h2{font-family:Georgia,'Noto Serif Devanagari',serif;color:var(--ds-text);font-size:1.7rem;line-height:1.25;margin:0 0 13px;}.section h3{color:var(--ds-text);font-size:.96rem;line-height:1.4;margin:0 0 7px;}.section>p,.intro{color:var(--ds-text);font-size:.83rem;line-height:1.85;}.highlight{font-size:.95rem !important;color:var(--ds-text) !important;border-left:4px solid var(--ds-border);padding-left:16px;}
    .pattern-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:20px;}.paper-card{padding:20px;border:1px solid var(--ds-border);border-radius:15px;background:var(--ds-surface-soft);}.paper-card:first-child{border-top:4px solid var(--ds-border);}.paper-card:last-child{border-top:4px solid var(--ds-border);}.paper-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}.paper-head span{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--ds-surface-soft);color:var(--ds-text);font-weight:900;font-size:.72rem;}.paper-card:last-child .paper-head span{background:var(--ds-surface-soft);color:var(--ds-text);}.paper-head b{padding:5px 8px;border-radius:8px;background:var(--ds-surface-soft);color:var(--ds-text);font-size:.62rem;}.paper-card:last-child .paper-head b{background:var(--ds-surface-soft);color:var(--ds-text);}.paper-card h3{font-size:1.02rem;margin-top:12px;}.paper-card p{color:var(--ds-text);font-size:.75rem;line-height:1.65;}.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:14px;}.mini-stats div{padding:9px;border-radius:9px;background:var(--ds-surface-soft);text-align:center;}.mini-stats small{display:block;color:var(--ds-text-muted);font-size:.58rem;}.mini-stats strong{display:block;color:var(--ds-text);font-size:.72rem;margin-top:3px;}
    .table-wrap{overflow-x:auto;margin-top:19px;border:1px solid var(--ds-border);border-radius:14px;}.data-table{width:100%;border-collapse:collapse;min-width:650px;background:var(--ds-surface);font-size:.76rem;}.data-table th{padding:11px 13px;background:var(--ds-surface-soft);color:var(--ds-heading);text-align:left;font-size:.68rem;}.data-table td{padding:11px 13px;border-bottom:1px solid var(--ds-border);color:var(--ds-text);}.data-table tr:last-child td{border-bottom:0;}.data-table td:first-child{font-weight:850;color:var(--ds-text);}.green{color:var(--ds-text) !important;font-weight:850;}.orange{color:var(--ds-text) !important;font-weight:850;}
    .syllabus-list{display:grid;gap:9px;margin-top:19px;}.syllabus-list article{display:grid;grid-template-columns:44px 1fr;gap:13px;padding:15px;border:1px solid var(--ds-border);border-radius:13px;background:var(--ds-surface-soft);}.syllabus-list span{width:40px;height:40px;display:grid;place-items:center;border-radius:11px;background:var(--ds-surface-soft);color:var(--ds-text);font-size:.68rem;font-weight:900;}.syllabus-list p{margin:3px 0 0;color:var(--ds-text);font-size:.75rem;line-height:1.65;}.syllabus-list h3{margin:0;font-size:.88rem;}
    .formula{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin-top:20px;}.formula article{padding:18px;border-radius:14px;border:1px solid var(--ds-border);background:var(--ds-surface-soft);}.formula article strong{display:block;color:var(--ds-text);font-size:1rem;}.formula article small{display:block;color:var(--ds-text-muted);font-size:.68rem;margin-top:5px;line-height:1.5;}.formula>span{font-size:1.25rem;color:var(--ds-text);font-weight:900;}.example-box{margin-top:15px;padding:16px;border-radius:13px;background:var(--ds-surface-soft);border:1px solid var(--ds-border);color:var(--ds-text);font-size:.75rem;line-height:1.7;}.example-box strong{color:var(--ds-text);}.safe-note{display:grid;grid-template-columns:auto 1fr;gap:12px;margin-top:16px;padding:15px;border-radius:12px;background:var(--ds-surface-soft);border:1px solid var(--ds-border);}.safe-note span{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:var(--ds-surface-soft);color:var(--ds-heading);font-weight:900;}.safe-note p{margin:0;color:var(--ds-text);font-size:.75rem;line-height:1.7;}
    .cutoff-flow{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;margin-top:20px;}.cutoff-flow article{padding:18px;border-radius:14px;border:1px solid var(--ds-border);background:var(--ds-surface-soft);}.cutoff-flow span{color:var(--ds-text);font-weight:900;}.cutoff-flow p{margin:5px 0 0;color:var(--ds-text);font-size:.74rem;line-height:1.65;}.cutoff-flow strong{color:var(--ds-text);}.myth{margin-top:15px;padding:15px 17px;border-left:4px solid var(--ds-border);background:var(--ds-surface-soft);border-radius:0 12px 12px 0;color:var(--ds-text);font-size:.75rem;line-height:1.7;}
    .resource-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;margin-top:19px;}.resource-card{padding:17px;border:1px solid var(--ds-border);border-radius:13px;background:var(--ds-surface-soft);}.resource-card strong{display:block;color:var(--ds-text-muted);font-size:.85rem;}.resource-card p{margin:5px 0 0;color:var(--ds-text-muted);font-size:.72rem;line-height:1.65;}.resource-card em{display:inline-block;margin-top:8px;color:var(--ds-text-muted);font-size:.65rem;font-style:normal;font-weight:800;}.editorial-note{margin-top:15px;color:var(--ds-text);font-size:.7rem;line-height:1.65;}
    .timeline{display:grid;gap:10px;margin-top:20px;}.phase{display:grid;grid-template-columns:118px 1fr;gap:15px;padding:17px;border:1px solid var(--ds-border);border-radius:14px;background:var(--ds-surface-soft);}.phase time{display:block;color:var(--ds-text);font-size:.7rem;font-weight:900;}.phase h3{margin:0 0 5px;}.phase p{margin:0;color:var(--ds-text);font-size:.74rem;line-height:1.65;}.phase ul{margin:8px 0 0;padding-left:18px;color:var(--ds-text);font-size:.72rem;line-height:1.7;}.phase.final{border-color:var(--ds-border);background:var(--ds-surface-soft);}.phase.final time{color:var(--ds-text);}
    .rules-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:18px;}.rule{padding:16px;border-radius:13px;border:1px solid var(--ds-border);background:var(--ds-surface-soft);}.rule b{display:block;color:var(--ds-text);font-size:.82rem;}.rule p{margin:5px 0 0;color:var(--ds-text);font-size:.72rem;line-height:1.65;}.rule.danger{background:var(--ds-surface-soft);border-color:var(--ds-border);}.rule.danger b{color:var(--ds-danger);}
    .faq details{border-top:1px solid var(--ds-border);}.faq details:last-child{border-bottom:1px solid var(--ds-border);}.faq summary{cursor:pointer;list-style:none;padding:15px 2px;color:var(--ds-text);font-size:.79rem;font-weight:800;}.faq summary::-webkit-details-marker{display:none;}.faq summary:after{content:"+";float:right;color:var(--ds-text);font-size:1rem;}.faq details[open] summary:after{content:"−";}.faq details p{margin:0;padding:0 2px 15px;color:var(--ds-text);font-size:.75rem;line-height:1.7;}
    .next-step{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--ds-surface-soft);border:0;}.next-step h2{color:var(--ds-heading);}.next-step p{color:var(--ds-text);margin:0;font-size:.78rem;line-height:1.7;}.next-step .button{white-space:nowrap;background:var(--ds-surface);color:var(--ds-text);}.source-box{padding:22px 25px;border:1px dashed var(--ds-border);border-radius:15px;background:var(--ds-surface-soft);}.source-box h3{margin:0 0 7px;color:var(--ds-text-muted);font-size:.88rem;}.source-box p{margin:0;color:var(--ds-text-muted);font-size:.7rem;line-height:1.7;}.source-box a{display:inline-block;margin-top:10px;color:var(--ds-text-muted);font-size:.69rem;font-weight:800;}.updated-chip{display:inline-block;margin-bottom:10px;padding:6px 9px;border-radius:8px;background:var(--ds-surface-soft);color:var(--ds-text);font-size:.64rem;font-weight:850;}
    @media(max-width:980px){.hero-grid{grid-template-columns:1fr;}.date-card{max-width:620px;}.quick-facts{grid-template-columns:repeat(2,1fr);}.quick-facts>div:nth-child(2){border-right:0;}.quick-facts>div:nth-child(-n+2){border-bottom:1px solid var(--ds-border);}.page-layout{grid-template-columns:1fr;}.page-layout>aside{display:none;}}
    @media(max-width:700px){.pre-hero{padding:28px 0 70px;}.pre-hero h1{font-size:2.5rem;}.quick-facts{margin-top:-28px;}.quick-facts>div{padding:15px 13px;}.pattern-grid,.resource-grid,.rules-grid{grid-template-columns:1fr;}.section{padding:21px 18px;border-radius:14px;}.formula,.cutoff-flow{grid-template-columns:1fr;}.formula>span,.cutoff-flow>span{transform:rotate(90deg);justify-self:center;}.phase{grid-template-columns:1fr;}.next-step{flex-direction:column;align-items:flex-start;}.date-row{grid-template-columns:1fr;}.mini-stats{grid-template-columns:1fr 1fr 1fr;}}
    @media(max-width:480px){.quick-facts{grid-template-columns:1fr;}.quick-facts>div{border-right:0 !important;border-bottom:1px solid var(--ds-border);}.quick-facts>div:last-child{border-bottom:0;}.pre-hero h1{font-size:2.15rem;}.pre-hero h1 span{font-size:.58em;}.hero-actions .button{width:100%;justify-content:center;}.syllabus-list article{grid-template-columns:38px 1fr;}.syllabus-list span{width:36px;height:36px;}}

/* Source family: upsc-prelims/targeted-notes/index.html */
.ptn-page{background:var(--ds-surface-soft);color:var(--ds-text);min-height:100vh;}
  .ptn-hero{background:var(--ds-surface-soft);color:var(--ds-heading);padding:42px 0 52px;position:relative;overflow:hidden;}
  .ptn-hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-120px;top:-180px;background:rgba(255,199,93,.12);}
  .ptn-shell{width:min(1180px,calc(100% - 32px));margin:auto;position:relative;}
  .ptn-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--ds-text-muted);font-size:.72rem;margin-bottom:24px;}
  .ptn-breadcrumb a{color:var(--ds-text-muted);text-decoration:none;}
  .ptn-kicker{display:inline-flex;padding:7px 11px;border:1px solid rgba(255,255,255,.18);border-radius:999px;background:rgba(255,255,255,.07);font-size:.69rem;font-weight:850;color:var(--ds-text);}
  .ptn-hero h1{font-family:Georgia,"Noto Serif Devanagari",serif;font-size:clamp(2.25rem,5vw,4.15rem);line-height:1.05;margin:16px 0 14px;max-width:900px;}
  .ptn-hero p{max-width:790px;color:var(--ds-text);line-height:1.85;margin:0;font-size:.92rem;}
  .ptn-strip{background:var(--ds-surface);border-bottom:1px solid var(--ds-border);}
  .ptn-strip-grid{display:grid;grid-template-columns:repeat(4,1fr);}
  .ptn-strip-grid div{padding:17px 18px;border-right:1px solid var(--ds-border);}
  .ptn-strip-grid div:last-child{border-right:0;}
  .ptn-strip small{display:block;color:var(--ds-text-muted);font-size:.62rem;}
  .ptn-strip strong{display:block;color:var(--ds-text);font-size:.78rem;margin-top:4px;}
  .ptn-main{padding:42px 0 76px;}
  .ptn-layout{display:block;}
  .ptn-side{position:sticky;top:100px;align-self:start;background:var(--ds-surface);border:1px solid var(--ds-border);border-radius:16px;padding:15px;box-shadow:none;}
  .ptn-side span{display:block;color:var(--ds-text);font-size:.62rem;font-weight:900;letter-spacing:.07em;margin:3px 8px 10px;}
  .ptn-side a{display:block;padding:9px 10px;border-radius:9px;color:var(--ds-text);text-decoration:none;font-size:.73rem;font-weight:750;}
  .ptn-side a:hover{background:var(--ds-surface-soft);color:var(--ds-text);}
  .ptn-content{min-width:0;}
  .ptn-card{background:var(--ds-surface);border:1px solid var(--ds-border);border-radius:18px;padding:26px;margin-bottom:16px;box-shadow:none;}
  .ptn-card h2{margin:0;color:var(--ds-text);font-family:Georgia,"Noto Serif Devanagari",serif;font-size:1.45rem;}
  .ptn-card p{color:var(--ds-text);line-height:1.8;font-size:.8rem;}
  .ptn-subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px;}
  .ptn-subject{padding:17px;border:1px solid var(--ds-border);border-radius:14px;background:var(--ds-surface-soft);}
  .ptn-subject strong{display:block;color:var(--ds-text);font-size:.84rem;}
  .ptn-subject small{display:block;color:var(--ds-text-muted);font-size:.67rem;margin-top:4px;line-height:1.5;}
  .ptn-empty{padding:26px;border:1px dashed var(--ds-border);border-radius:15px;background:var(--ds-surface-soft);text-align:center;color:var(--ds-text);font-size:.78rem;line-height:1.7;}
  .ptn-ready{display:inline-flex;margin-top:12px;padding:6px 9px;border-radius:8px;background:var(--ds-surface-soft);color:var(--ds-success);font-size:.64rem;font-weight:850;}
  @media(max-width:900px){.ptn-layout{display:block;}}
  @media(max-width:600px){.ptn-hero{padding:30px 0 40px;}.ptn-subject-grid{grid-template-columns:1fr;}.ptn-strip-grid{grid-template-columns:1fr;}.ptn-strip-grid div{border-right:0;border-bottom:1px solid var(--ds-border);}.ptn-strip-grid div:last-child{border-bottom:0;}.ptn-card{padding:20px;}}
  html[data-theme="dark"] .ptn-page{background:var(--ds-surface-soft);color:var(--ds-text);}
  html[data-theme="dark"] .ptn-strip,html[data-theme="dark"] .ptn-card,html[data-theme="dark"] .ptn-side{background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;}
  html[data-theme="dark"] .ptn-subject,html[data-theme="dark"] .ptn-empty{background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;}
  html[data-theme="dark"] .ptn-card h2,html[data-theme="dark"] .ptn-subject strong,html[data-theme="dark"] .ptn-strip strong{color:var(--ds-text) !important;}
  html[data-theme="dark"] .ptn-card p,html[data-theme="dark"] .ptn-subject small,html[data-theme="dark"] .ptn-empty{color:var(--ds-text-muted) !important;}

/* PTN_PUBLISHED_FIRST_V2 */
.ptn-published{border-color:var(--ds-border) !important;background:var(--ds-surface-soft) !important;}
.ptn-subject{min-height:72px;display:flex;align-items:center;}
.ptn-subject strong{font-size:1rem !important;}
@media(max-width:600px){.ptn-subject{min-height:64px;padding:16px 18px;}}
html[data-theme="dark"] .ptn-published{background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;}

/* Source family: upsc-prelims/targeted-notes/science-tech/index.html */
.stn-page{background:var(--ds-surface-soft);color:var(--ds-text);min-height:100vh;}
.stn-hero{background:var(--ds-surface-soft);color:var(--ds-heading);padding:28px 0 32px;}
.stn-shell{width:min(1040px,calc(100% - 28px));margin:auto;}
.stn-crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--ds-text-muted);font-size:.78rem;margin-bottom:18px;}
.stn-crumb a{color:var(--ds-text-muted);text-decoration:none;}
.stn-hero h1{font-family:Georgia,"Noto Serif Devanagari",serif;font-size:clamp(2rem,5vw,3.4rem);line-height:1.12;margin:0;}
.stn-main{padding:30px 0 76px;}
.stn-card{background:var(--ds-surface-soft);border:1px solid var(--ds-border);border-radius:18px;padding:24px;box-shadow:none;}
.stn-card h2{margin:0 0 18px;color:var(--ds-text);font-family:Georgia,"Noto Serif Devanagari",serif;font-size:1.55rem;}
.chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.chapter-card{display:flex;align-items:center;min-height:96px;padding:20px;border:1px solid var(--ds-border);border-radius:14px;background:var(--ds-surface-soft);color:var(--ds-text);text-decoration:none;font-size:1.05rem;font-weight:800;line-height:1.5;}
.chapter-card:hover{background:var(--ds-surface-soft);}
@media(max-width:650px){.stn-hero{padding:22px 0 26px;}.stn-main{padding:24px 0 64px;}.stn-card{padding:16px 14px;}.chapter-grid{grid-template-columns:1fr;}.chapter-card{min-height:78px;padding:17px;font-size:1.02rem;}}
html[data-theme="dark"] .stn-page{background:var(--ds-surface-soft);color:var(--ds-text);}
html[data-theme="dark"] .stn-card{background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;}
html[data-theme="dark"] .stn-card h2{color:var(--ds-text) !important;}
html[data-theme="dark"] .chapter-card{background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;color:var(--ds-text) !important;}

/* 2031 shared overrides: stable surface, typography and responsive hierarchy */
body[data-ds="2031"].pre-page,
body[data-ds="2031"].ptn-page,
body[data-ds="2031"].stn-page{background:var(--ds-bg) !important;color:var(--ds-text) !important;}

body[data-ds="2031"] :where(.pre-page,.ptn-page,.stn-page) :where(h1,h2,h3,h4){font-family:var(--ds-font-body);letter-spacing:-.015em;}
body[data-ds="2031"] :where(.pre-page,.ptn-page,.stn-page) :where(p,li){font-family:var(--ds-font-body);}
body[data-ds="2031"] :where(.section,.paper-card,.toc-card,.date-card,.ptn-card,.ptn-side,.stn-card,.chapter-card){
  border-color:var(--ds-border) !important;
  box-shadow:none !important;
}
body[data-ds="2031"] :where(.ptn-card,.stn-card,.section,.paper-card,.toc-card,.date-card){background:var(--ds-surface) !important;}
body[data-ds="2031"] :where(.ptn-subject,.chapter-card,.mini-stats div,.date-row div){background:var(--ds-surface-soft) !important;}
body[data-ds="2031"] :where(.ptn-card h2,.stn-card h2,.chapter-card,.economics-placeholder){color:var(--ds-heading) !important;}
body[data-ds="2031"] .ptn-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
body[data-ds="2031"] .ptn-subject{
  min-height:76px;display:flex;align-items:center;padding:16px 18px;
  border:1px solid var(--ds-border);border-radius:var(--ds-radius-md);
  background:var(--ds-surface-soft);color:var(--ds-heading);}
body[data-ds="2031"] .ptn-subject.ptn-published{border-color:var(--ds-primary) !important;background:color-mix(in srgb,var(--ds-primary) 8%,var(--ds-surface)) !important;}
body[data-ds="2031"] .ptn-subject strong{color:var(--ds-heading) !important;font-size:1rem !important;}
body[data-ds="2031"] .chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
body[data-ds="2031"] .chapter-card{
  min-height:88px;padding:18px;border-radius:var(--ds-radius-md);
  color:var(--ds-heading) !important;text-decoration:none;}
body[data-ds="2031"] .chapter-card:hover{border-color:var(--ds-primary) !important;background:var(--ds-surface) !important;}
html[data-theme="dark"] body[data-ds="2031"] :where(.ptn-strip,.ptn-card,.ptn-side,.stn-card,.section,.paper-card,.toc-card,.date-card){
  background:var(--ds-surface) !important;border-color:var(--ds-border) !important;}
html[data-theme="dark"] body[data-ds="2031"] :where(.ptn-subject,.chapter-card,.mini-stats div,.date-row div){
  background:var(--ds-surface-soft) !important;border-color:var(--ds-border) !important;}
@media(max-width:47.999rem){
  body[data-ds="2031"] .ptn-subject-grid,
  body[data-ds="2031"] .chapter-grid{grid-template-columns:1fr;}
  body[data-ds="2031"] .ptn-subject,
  body[data-ds="2031"] .chapter-card{min-height:68px;}
}

body[data-ds="2031"] .pre-targeted-link{
  display:inline-flex;align-items:center;min-height:40px;margin-top:8px;
  color:var(--ds-primary);font-size:var(--ds-text-sm);font-weight:800;text-decoration:none;}
body[data-ds="2031"] .pre-targeted-link:hover{text-decoration:underline;text-underline-offset:3px;}


/* PRELIMS_STUDY_FIRST_SIMPLE_V1 */
body[data-ds="2031"].pre-page{
  background:var(--ds-surface-soft) !important;
  color:var(--ds-text) !important;
}
body[data-ds="2031"].pre-page main{overflow:visible;}

/* Calm, study-first hero */
body[data-ds="2031"].pre-page .pre-hero{
  padding:24px 0 28px !important;
  background:var(--ds-surface) !important;
  color:var(--ds-text) !important;
  border-bottom:1px solid var(--ds-border);
}
body[data-ds="2031"].pre-page .pre-hero:before{display:none !important;}
body[data-ds="2031"].pre-page .pre-hero .shell{position:relative;}
body[data-ds="2031"].pre-page .crumb{
  margin-bottom:18px !important;
  color:var(--ds-text-muted) !important;
  font-size:.78rem !important;
}
body[data-ds="2031"].pre-page .crumb a{color:var(--ds-text-muted) !important;}
body[data-ds="2031"].pre-page .hero-grid{
  grid-template-columns:minmax(0,1fr) minmax(260px,340px) !important;
  gap:28px !important;
  align-items:start !important;
}
body[data-ds="2031"].pre-page .kicker{
  padding:0 !important;
  border:0 !important;
  border-radius:0 !important;
  background:transparent !important;
  color:var(--ds-text) !important;
  font-size:.78rem !important;
  font-weight:700 !important;
}
body[data-ds="2031"].pre-page .kicker i{display:none !important;}
body[data-ds="2031"].pre-page .pre-hero h1{
  max-width:780px;
  margin:10px 0 12px !important;
  color:var(--ds-text) !important;
  font-family:var(--ds-font-body) !important;
  font-size:clamp(2rem,4.2vw,3.15rem) !important;
  line-height:1.16 !important;
  letter-spacing:-.02em !important;
}
body[data-ds="2031"].pre-page .pre-hero h1 span{
  margin-top:8px !important;
  color:var(--ds-text) !important;
  font-size:.5em !important;
  line-height:1.45 !important;
  font-weight:650 !important;
}
body[data-ds="2031"].pre-page .hero-lead{
  max-width:760px !important;
  margin:0 !important;
  color:var(--ds-text) !important;
  font-size:1rem !important;
  line-height:1.75 !important;
}
body[data-ds="2031"].pre-page .hero-actions{
  gap:10px !important;
  margin-top:18px !important;
}
body[data-ds="2031"].pre-page .hero-actions .button{
  min-height:42px !important;
  padding:9px 14px !important;
  border-radius:8px !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .hero-actions .primary{
  background:var(--ds-primary) !important;
  border-color:var(--ds-border) !important;
  color:var(--ds-on-primary) !important;
}
body[data-ds="2031"].pre-page .outline-light{
  background:var(--ds-surface) !important;
  border:1px solid var(--ds-border) !important;
  color:var(--ds-text) !important;
}
body[data-ds="2031"].pre-page .source-line{
  margin-top:16px !important;
  gap:12px !important;
  color:var(--ds-text-muted) !important;
  font-size:.75rem !important;
}
body[data-ds="2031"].pre-page .source-line span:before{
  color:var(--ds-text-muted) !important;
}

/* Date info: plain information card, no poster-like styling */
body[data-ds="2031"].pre-page .date-card{
  padding:18px !important;
  border:1px solid var(--ds-border) !important;
  border-radius:10px !important;
  background:var(--ds-surface-soft) !important;
  color:var(--ds-text) !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .date-card small{
  color:var(--ds-text-muted) !important;
  font-size:.72rem !important;
  letter-spacing:.03em !important;
}
body[data-ds="2031"].pre-page .date-card .big-date{
  margin:6px 0 6px !important;
  color:var(--ds-text) !important;
  font-family:var(--ds-font-body) !important;
  font-size:1.8rem !important;
  font-weight:800 !important;
}
body[data-ds="2031"].pre-page .date-card>p{
  color:var(--ds-text) !important;
  font-size:.82rem !important;
  line-height:1.6 !important;
}
body[data-ds="2031"].pre-page .date-row{
  gap:8px !important;
  margin-top:14px !important;
}
body[data-ds="2031"].pre-page .date-row div{
  padding:10px !important;
  border-radius:8px !important;
  background:var(--ds-surface-soft) !important;
}
body[data-ds="2031"].pre-page .date-row span{font-size:.68rem !important;color:var(--ds-text) !important;}
body[data-ds="2031"].pre-page .date-row strong{font-size:.8rem !important;color:var(--ds-text) !important;}
body[data-ds="2031"].pre-page .status-note{
  margin-top:12px !important;
  padding:10px 11px !important;
  border-radius:8px !important;
  background:var(--ds-surface-soft) !important;
  border-color:var(--ds-border) !important;
  color:var(--ds-text) !important;
  font-size:.75rem !important;
  line-height:1.55 !important;
}

/* Facts sit naturally in the page instead of floating over the hero */
body[data-ds="2031"].pre-page .quick-facts{
  margin-top:18px !important;
  border-radius:10px !important;
  border-color:var(--ds-border) !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .quick-facts>div{
  padding:14px 16px !important;
}
body[data-ds="2031"].pre-page .qicon{
  width:36px !important;
  height:36px !important;
  border-radius:8px !important;
  background:var(--ds-surface-soft) !important;
  color:var(--ds-text) !important;
}
body[data-ds="2031"].pre-page .quick-facts small{font-size:.7rem !important;color:var(--ds-text-muted) !important;}
body[data-ds="2031"].pre-page .quick-facts strong{font-size:.86rem !important;color:var(--ds-text) !important;}

/* Reading area: flatter cards, larger readable text */
body[data-ds="2031"].pre-page .page-layout{
  gap:24px !important;
  padding-top:30px !important;
  padding-bottom:68px !important;
}
body[data-ds="2031"].pre-page .toc-card{
  border-radius:10px !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .official-card{
  border-radius:10px !important;
  background:var(--ds-surface-soft) !important;
  color:var(--ds-text) !important;
}
body[data-ds="2031"].pre-page .official-card span,
body[data-ds="2031"].pre-page .official-card small{color:var(--ds-text-muted) !important;}
body[data-ds="2031"].pre-page .official-card strong{color:var(--ds-text) !important;}

body[data-ds="2031"].pre-page .section{
  margin-bottom:14px !important;
  padding:26px !important;
  border-radius:10px !important;
  border-color:var(--ds-border) !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .section h2{
  color:var(--ds-text) !important;
  font-family:var(--ds-font-body) !important;
  font-size:1.48rem !important;
  line-height:1.35 !important;
}
body[data-ds="2031"].pre-page .section h3{
  color:var(--ds-text) !important;
  font-size:1rem !important;
}
body[data-ds="2031"].pre-page .section>p,
body[data-ds="2031"].pre-page .intro{
  color:var(--ds-text) !important;
  font-size:1rem !important;
  line-height:1.8 !important;
}
body[data-ds="2031"].pre-page .highlight{
  padding:12px 14px !important;
  border-left:3px solid var(--ds-border) !important;
  border-radius:0 8px 8px 0 !important;
  background:var(--ds-surface-soft) !important;
  color:var(--ds-text) !important;
  font-size:1rem !important;
}
body[data-ds="2031"].pre-page .paper-card,
body[data-ds="2031"].pre-page .syllabus-list article,
body[data-ds="2031"].pre-page .resource-card,
body[data-ds="2031"].pre-page .rule,
body[data-ds="2031"].pre-page .phase{
  border-radius:9px !important;
  background:var(--ds-surface-soft) !important;
  box-shadow:none !important;
}
body[data-ds="2031"].pre-page .syllabus-list p,
body[data-ds="2031"].pre-page .paper-card p,
body[data-ds="2031"].pre-page .resource-card p,
body[data-ds="2031"].pre-page .rule p,
body[data-ds="2031"].pre-page .phase p,
body[data-ds="2031"].pre-page .phase ul{
  color:var(--ds-text-muted) !important;
  font-size:.9rem !important;
  line-height:1.7 !important;
}

@media(max-width:980px){
  body[data-ds="2031"].pre-page .hero-grid{grid-template-columns:1fr !important;}
  body[data-ds="2031"].pre-page .date-card{max-width:none !important;}
}
@media(max-width:700px){
  body[data-ds="2031"].pre-page .pre-hero{padding:18px 0 20px !important;}
  body[data-ds="2031"].pre-page .crumb{margin-bottom:13px !important;}
  body[data-ds="2031"].pre-page .pre-hero h1{
    font-size:2rem !important;
    line-height:1.2 !important;
  }
  body[data-ds="2031"].pre-page .pre-hero h1 span{
    font-size:.58em !important;
    line-height:1.42 !important;
  }
  body[data-ds="2031"].pre-page .hero-lead{
    font-size:.96rem !important;
    line-height:1.7 !important;
  }
  body[data-ds="2031"].pre-page .hero-actions{
    display:grid !important;
    grid-template-columns:1fr !important;
  }
  body[data-ds="2031"].pre-page .hero-actions .button{
    width:100% !important;
    justify-content:center !important;
  }
  body[data-ds="2031"].pre-page .source-line{
    display:grid !important;
    gap:6px !important;
  }
  body[data-ds="2031"].pre-page .quick-facts{
    grid-template-columns:repeat(2,minmax(0,1fr)) !important;
    margin-top:14px !important;
  }
  body[data-ds="2031"].pre-page .quick-facts>div{
    border-bottom:1px solid var(--ds-border);
  }
  body[data-ds="2031"].pre-page .quick-facts>div:nth-child(2n){border-right:0 !important;}
  body[data-ds="2031"].pre-page .quick-facts>div:nth-last-child(-n+2){border-bottom:0 !important;}
  body[data-ds="2031"].pre-page .page-layout{padding-top:22px !important;}
  body[data-ds="2031"].pre-page .section{
    padding:19px 16px !important;
    border-radius:8px !important;
  }
  body[data-ds="2031"].pre-page .section h2{font-size:1.32rem !important;}
  body[data-ds="2031"].pre-page .section>p,
  body[data-ds="2031"].pre-page .intro,
  body[data-ds="2031"].pre-page .highlight{
    font-size:.96rem !important;
  }
}
@media(max-width:420px){
  body[data-ds="2031"].pre-page .quick-facts{grid-template-columns:1fr !important;}
  body[data-ds="2031"].pre-page .quick-facts>div{
    border-right:0 !important;
    border-bottom:1px solid var(--ds-border) !important;
  }
  body[data-ds="2031"].pre-page .quick-facts>div:last-child{border-bottom:0 !important;}
}