/* Little Thinkers AI Lab — toy-block design system */
:root{
  --sky:#EEF5FF;
  --ink:#21295C;
  --ink-soft:#4A5384;
  --sun:#FFC83D;
  --coral:#FF6B6B;
  --mint:#2FC796;
  --violet:#7C6CF0;
  --white:#FFFFFF;
  --border:3px solid var(--ink);
  --shadow:6px 6px 0 var(--ink);
  --shadow-sm:4px 4px 0 var(--ink);
  --radius:18px;
  --font-display:'Baloo 2',system-ui,sans-serif;
  --font-body:'Nunito',system-ui,sans-serif;
  --font-robot:'Space Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--sky);color:var(--ink);line-height:1.65;font-size:17px;}
/* faint dotted-grid like a school workbook */
body{background-image:radial-gradient(rgba(33,41,92,.08) 1.4px,transparent 1.4px);background-size:26px 26px;}
img{max-width:100%}
a{color:var(--violet)}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:var(--white);border-bottom:var(--border)}
.nav{display:flex;align-items:center;gap:18px;padding:12px 0}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-weight:800;font-size:1.25rem}
.logo .mini-pip{width:34px;height:34px}
.nav-links{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.nav-links a{font-family:var(--font-display);font-weight:700;text-decoration:none;color:var(--ink);padding:7px 14px;border-radius:999px;border:3px solid transparent;font-size:.95rem}
.nav-links a:hover,.nav-links a.active{border-color:var(--ink);background:var(--sun)}
.nav-links a:focus-visible{outline:3px dashed var(--violet);outline-offset:2px}

/* ---------- Pip the robot ---------- */
.pip{width:150px;height:auto;display:block}
.pip .eye{animation:blink 4s infinite}
@keyframes blink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.08)}}
.pip .antenna-light{animation:glow 2.2s ease-in-out infinite}
@keyframes glow{0%,100%{opacity:.5}50%{opacity:1}}
@media (prefers-reduced-motion:reduce){.pip .eye,.pip .antenna-light{animation:none}}
.speech{font-family:var(--font-robot);font-size:.86rem;background:var(--white);border:var(--border);border-radius:14px;padding:10px 14px;position:relative;box-shadow:var(--shadow-sm);max-width:260px}
.speech::after{content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);border:8px solid transparent;border-right-color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:64px 0 48px;display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}
.hero h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:800;margin:14px 0 16px}
.hero h1 .hl{background:var(--sun);padding:0 .18em;border-radius:8px;box-shadow:3px 3px 0 var(--ink)}
.eyebrow{font-family:var(--font-robot);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;background:var(--white);border:var(--border);display:inline-block;padding:4px 12px;border-radius:999px}
.hero p.lead{font-size:1.12rem;color:var(--ink-soft);max-width:54ch}
.hero-pip{display:flex;flex-direction:column;align-items:center;gap:14px}
.btn{display:inline-block;font-family:var(--font-display);font-weight:800;font-size:1.02rem;text-decoration:none;color:var(--ink);background:var(--sun);border:var(--border);border-radius:14px;padding:12px 24px;box-shadow:var(--shadow-sm);transition:transform .12s,box-shadow .12s;cursor:pointer}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn:focus-visible{outline:3px dashed var(--violet);outline-offset:3px}
.btn.secondary{background:var(--white)}
.btn-row{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}

/* ---------- cards & sections ---------- */
section{padding:44px 0}
.section-title{font-size:clamp(1.6rem,3.4vw,2.2rem);margin-bottom:8px}
.section-sub{color:var(--ink-soft);max-width:62ch;margin-bottom:30px}
.card{background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.course-card{display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);transition:transform .15s}
.course-card:hover{transform:translate(-3px,-3px)}
.course-card .age{font-family:var(--font-robot);font-size:.78rem;letter-spacing:.1em;display:inline-block;border:2px solid var(--ink);border-radius:999px;padding:2px 10px;align-self:flex-start}
.course-card h3{font-size:1.5rem}
.course-card .bar{height:14px;border:2px solid var(--ink);border-radius:999px;background:var(--sky);overflow:hidden}
.course-card .bar i{display:block;height:100%;background:var(--ink);border-radius:999px;transition:width .4s}
.course-card .pct{font-family:var(--font-robot);font-size:.78rem}
.tint-mint{background:linear-gradient(180deg,#E4FBF2,var(--white) 65%)}
.tint-sunshine{background:linear-gradient(180deg,#FFF4D6,var(--white) 65%)}
.tint-violet{background:linear-gradient(180deg,#EDEAFF,var(--white) 65%)}
.tint-mint .bar i{background:var(--mint)}
.tint-sunshine .bar i{background:var(--sun)}
.tint-violet .bar i{background:var(--violet)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding:22px;background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.step::before{counter-increment:step;content:counter(step);font-family:var(--font-display);font-weight:800;display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;background:var(--coral);color:var(--white);border:var(--border);border-radius:12px;margin-bottom:10px;font-size:1.1rem}
.step h4{margin-bottom:6px}
.step p{font-size:.94rem;color:var(--ink-soft)}

.faq details{background:var(--white);border:var(--border);border-radius:14px;box-shadow:var(--shadow-sm);margin-bottom:14px;padding:0 20px}
.faq summary{font-family:var(--font-display);font-weight:700;font-size:1.05rem;padding:16px 0;cursor:pointer;list-style:none}
.faq summary::before{content:"+ ";color:var(--coral);font-weight:800}
.faq details[open] summary::before{content:"− "}
.faq details p{padding:0 0 18px;color:var(--ink-soft)}

/* ---------- course page ---------- */
.course-hero{padding:48px 0 28px;display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.course-hero .info{flex:1;min-width:280px}
.course-hero h1{font-size:clamp(2rem,4.5vw,2.9rem);margin:10px 0}
.parent-note{border-left:10px solid var(--sun);background:var(--white);border-top:var(--border);border-right:var(--border);border-bottom:var(--border);border-radius:0 var(--radius) var(--radius) 0;padding:20px 24px;margin:10px 0 30px;box-shadow:var(--shadow-sm)}
.parent-note strong{font-family:var(--font-display)}
.course-progress{margin:18px 0 6px}
.course-progress .bar{height:20px;border:var(--border);border-radius:999px;background:var(--white);overflow:hidden}
.course-progress .bar i{display:block;height:100%;border-radius:999px;transition:width .4s}
.course-progress .lbl{font-family:var(--font-robot);font-size:.8rem;margin-top:6px}

.phase{margin-bottom:34px}
.phase-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.phase-num{font-family:var(--font-display);font-weight:800;font-size:1.2rem;width:52px;height:52px;display:flex;align-items:center;justify-content:center;border:var(--border);border-radius:16px;background:var(--white);box-shadow:var(--shadow-sm);flex-shrink:0}
.phase-head h2{font-size:1.5rem}
.phase-goal{color:var(--ink-soft);margin:-4px 0 16px 66px;max-width:70ch}
.lesson{background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:16px;overflow:hidden}
.lesson summary{display:flex;align-items:center;gap:14px;padding:16px 20px;cursor:pointer;list-style:none;font-family:var(--font-display);font-weight:700;font-size:1.06rem}
.lesson summary::-webkit-details-marker{display:none}
.lesson .time{margin-left:auto;font-family:var(--font-robot);font-size:.72rem;color:var(--ink-soft);white-space:nowrap}
.lesson-body{padding:0 22px 20px 58px;color:var(--ink-soft)}
.lesson-body p{margin-bottom:12px}
.lesson-body .block{border:2px dashed var(--ink);border-radius:12px;padding:14px 16px;margin:12px 0;background:var(--sky)}
.lesson-body .block .tag{font-family:var(--font-robot);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;display:block;margin-bottom:6px;color:var(--ink)}
.lesson-body .pip-says{display:flex;gap:12px;align-items:flex-start;margin-top:14px}
.lesson-body .pip-says svg{width:42px;flex-shrink:0}
.lesson.project-card{border-width:3px;background:linear-gradient(180deg,#FFF4D6,var(--white) 70%)}
.lesson.project-card summary::after{content:"PROJECT";font-family:var(--font-robot);font-size:.66rem;letter-spacing:.12em;background:var(--coral);color:#fff;padding:3px 9px;border-radius:999px;border:2px solid var(--ink)}
.check{appearance:none;width:28px;height:28px;border:var(--border);border-radius:9px;background:var(--white);cursor:pointer;flex-shrink:0;position:relative}
.check:checked{background:var(--mint)}
.check:checked::after{content:"✓";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--ink);font-weight:900;font-size:1rem}
.check:focus-visible{outline:3px dashed var(--violet);outline-offset:2px}
.locked-hint{font-family:var(--font-robot);font-size:.74rem;color:var(--coral);margin:4px 0 18px 66px}
.cert{margin:40px 0;text-align:center;padding:40px 28px}
.cert h2{font-size:1.9rem;margin-bottom:8px}
.confetti{font-size:2rem}

/* ---------- footer ---------- */
footer{border-top:var(--border);background:var(--white);padding:30px 0;margin-top:50px}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:center;justify-content:space-between;font-size:.9rem;color:var(--ink-soft)}
footer a{color:var(--ink)}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero{grid-template-columns:1fr;text-align:center}
  .hero p.lead{margin:0 auto}
  .btn-row{justify-content:center}
  .hero-pip{order:-1}
  .speech::after{display:none}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .steps{grid-template-columns:1fr}
  .lesson-body{padding-left:22px}
  .phase-goal,.locked-hint{margin-left:0}
}

/* ---------- richer lesson blocks ---------- */
.lesson-body .block.deeper{background:#EDEAFF;border-color:var(--violet)}
.lesson-body .block.tips{background:#FFF4D6;border-color:var(--sun);border-style:solid;border-width:2px}
.steps-list{margin:4px 0 0 20px}
.steps-list li{margin-bottom:6px}
.done-line{font-family:var(--font-robot);font-size:.85rem;color:var(--mint);border:2px solid var(--mint);border-radius:10px;padding:10px 14px;margin-top:12px;background:#E4FBF2}
.phase.planned .phase-num{background:var(--sky);color:var(--ink-soft);box-shadow:none;border-style:dashed}
.phase.planned .phase-head h2{color:var(--ink-soft)}
.soon-badge{font-family:var(--font-robot);font-size:.66rem;letter-spacing:.12em;background:var(--white);border:2px dashed var(--ink-soft);color:var(--ink-soft);padding:3px 9px;border-radius:999px;margin-left:auto}

/* ============================================================
   GAMES
   ============================================================ */
.games-hero{padding:48px 0 6px;display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.games-hero .info{flex:1;min-width:280px}
.games-group{padding:28px 0}
.games-group .age{font-family:var(--font-robot);font-size:.78rem;letter-spacing:.1em;display:inline-block;border:2px solid var(--ink);border-radius:999px;padding:2px 12px;margin-bottom:8px}
.games-group h2{font-size:1.55rem;margin-bottom:2px}
.games-group .sub{color:var(--ink-soft);margin-bottom:20px;max-width:62ch}
.game-card{cursor:pointer;display:flex;flex-direction:column;gap:8px;text-align:left;border:var(--border);background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;transition:transform .14s,box-shadow .14s;font:inherit;color:var(--ink)}
.game-card:hover{transform:translate(-3px,-3px);box-shadow:8px 8px 0 var(--ink)}
.game-card:focus-visible{outline:3px dashed var(--violet);outline-offset:3px}
.game-card .ico{font-size:2.4rem;line-height:1}
.game-card h3{font-size:1.2rem}
.game-card p{font-size:.92rem;color:var(--ink-soft)}
.game-card .concept{font-family:var(--font-robot);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;align-self:flex-start;border:2px solid var(--ink);border-radius:999px;padding:2px 10px;background:var(--sun)}

/* modal shell */
.game-modal{position:fixed;inset:0;z-index:100;background:rgba(33,41,92,.55);display:flex;align-items:center;justify-content:center;padding:16px}
.game-modal[hidden]{display:none}
.game-modal .panel{background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);width:min(640px,100%);max-height:92vh;overflow:auto}
.game-modal .panel-head{position:sticky;top:0;background:var(--white);border-bottom:var(--border);display:flex;align-items:center;gap:12px;padding:13px 18px;z-index:2}
.game-modal .panel-head h3{font-size:1.12rem;flex:1}
.game-modal .x{width:38px;height:38px;border:var(--border);border-radius:12px;background:var(--coral);color:#fff;font-weight:900;font-size:1rem;cursor:pointer;box-shadow:var(--shadow-sm)}
.game-stage{padding:20px 18px 24px}

/* shared game widgets */
.g-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.g-center{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.g-btn{font-family:var(--font-display);font-weight:800;border:var(--border);border-radius:12px;background:var(--white);padding:10px 16px;cursor:pointer;box-shadow:var(--shadow-sm);font-size:1rem;color:var(--ink);transition:transform .1s}
.g-btn:hover{transform:translate(-1px,-1px)}
.g-btn.primary{background:var(--sun)}
.g-btn:disabled{opacity:.45;cursor:default;transform:none}
.g-pip{display:flex;gap:10px;align-items:flex-start;margin-top:18px;background:var(--sky);border:2px dashed var(--ink);border-radius:14px;padding:12px}
.g-pip .pip{width:42px;flex-shrink:0}
.g-pip .speech{box-shadow:none;max-width:none}
.g-pip .speech::after{display:none}
.g-score{font-family:var(--font-robot);font-size:.85rem}

.tile{font-size:2.6rem;width:74px;height:74px;display:flex;align-items:center;justify-content:center;border:var(--border);border-radius:16px;background:var(--white);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .1s}
.tile:hover{transform:translate(-1px,-1px)}
.tile.lg{font-size:3.4rem;width:96px;height:96px}
.bin{flex:1;min-width:120px;min-height:92px;border:var(--border);border-radius:16px;background:var(--sky);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;padding:10px;font-family:var(--font-display);font-weight:800;color:var(--ink)}
.bin:hover{background:#fff}
.bin .label{font-size:1rem}
.bin .items{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;font-size:1.3rem}
.wrong{animation:shake .4s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.pop{animation:pop .3s}
@keyframes pop{0%{transform:scale(.6)}60%{transform:scale(1.15)}100%{transform:scale(1)}}

.seq{display:flex;gap:8px;justify-content:center;align-items:center;font-size:2.4rem;flex-wrap:wrap}
.seq .q{width:60px;height:60px;border:3px dashed var(--ink);border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--white)}
.choices{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.numline{position:relative;height:60px;border-bottom:3px solid var(--ink);margin:34px 6px 10px}
.numline .pt{position:absolute;bottom:-2px;transform:translateX(-50%);font-size:1.5rem;white-space:nowrap}
.numline .bound{position:absolute;top:-10px;bottom:-6px;width:3px;background:var(--coral)}
.g-range{width:100%}
input[type=range]{accent-color:var(--violet)}

.neuron-wrap{display:flex;flex-direction:column;gap:10px}
.io-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.toggle{border:var(--border);border-radius:12px;padding:6px 12px;background:var(--white);font-family:var(--font-display);font-weight:800;cursor:pointer;color:var(--ink)}
.toggle.on{background:var(--mint);color:#fff}
.lamp{width:58px;height:58px;border:var(--border);border-radius:50%;background:#dfe3ee;display:flex;align-items:center;justify-content:center;font-size:1.5rem;transition:background .2s}
.lamp.on{background:var(--sun)}

.bar-row{display:flex;align-items:center;gap:8px;margin:5px 0;cursor:pointer}
.bar-row .name{width:64px;font-weight:700}
.bar-row .track{flex:1;height:18px;border:2px solid var(--ink);border-radius:999px;background:var(--white);overflow:hidden}
.bar-row .track i{display:block;height:100%;background:var(--violet)}
.spark{display:flex;align-items:flex-end;gap:2px;height:60px;border-bottom:2px solid var(--ink);width:100%;max-width:300px}
.spark i{flex:1;background:var(--coral);border:1px solid var(--ink);border-bottom:none;min-width:6px}
.curve-box{border:var(--border);border-radius:14px;background:var(--white);box-shadow:var(--shadow-sm)}
.sentence{font-size:1.15rem;font-weight:700;background:var(--sky);border:2px dashed var(--ink);border-radius:12px;padding:12px;min-height:52px;line-height:1.5}
@media(max-width:560px){.tile{width:62px;height:62px;font-size:2.1rem}.tile.lg{width:84px;height:84px;font-size:3rem}}

/* ============================================================
   QUIZ & CERTIFICATE
   ============================================================ */
.quiz-hero{padding:44px 0 6px;text-align:center}
.quiz-hero h1{font-size:clamp(1.9rem,4.4vw,2.8rem);margin:10px 0}
.quiz-wrap{max-width:680px;margin:0 auto 50px}
.quiz-card{background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}
.q-progress{display:flex;gap:7px;justify-content:center;margin-bottom:18px;flex-wrap:wrap}
.q-dot{width:14px;height:14px;border:2px solid var(--ink);border-radius:50%;background:#fff}
.q-dot.current{background:var(--sun)}
.q-dot.right{background:var(--mint)}
.q-dot.wrong{background:var(--coral)}
.q-count{font-family:var(--font-robot);font-size:.78rem;text-align:center;color:var(--ink-soft);margin-bottom:6px}
.q-question{font-family:var(--font-display);font-weight:800;font-size:1.3rem;margin:4px 0 18px;line-height:1.3}
.q-opt{display:block;width:100%;text-align:left;border:var(--border);border-radius:14px;background:#fff;padding:14px 16px;margin-bottom:11px;font-family:var(--font-body);font-weight:700;font-size:1.02rem;color:var(--ink);cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .1s}
.q-opt:hover:not(:disabled){transform:translate(-2px,-2px)}
.q-opt:disabled{cursor:default}
.q-opt.correct{background:#E4FBF2;border-color:var(--mint)}
.q-opt.chosen-wrong{background:#FFE3E3;border-color:var(--coral)}
.q-opt:focus-visible{outline:3px dashed var(--violet);outline-offset:2px}
.q-feedback{margin-top:6px;font-family:var(--font-display);font-weight:800;font-size:1.05rem}
.q-feedback.ok{color:var(--mint)}
.q-feedback.no{color:var(--coral)}
.q-explain{color:var(--ink-soft);font-size:.96rem;margin-top:4px}
.quiz-controls{display:flex;gap:12px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}
.quiz-intro,.quiz-result{text-align:center}
.quiz-result .big{font-size:2.6rem;margin-bottom:6px}
.score-ring{font-family:var(--font-display);font-weight:800;font-size:1.4rem;border:var(--border);border-radius:999px;display:inline-block;padding:8px 22px;box-shadow:var(--shadow-sm);background:var(--sky);margin:8px 0}

/* course picker on quiz landing */
.quiz-pick{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:10px}
@media(max-width:680px){.quiz-pick{grid-template-columns:1fr}.q-progress .q-dot{width:12px;height:12px}}

/* certificate */
.cert-stage{display:flex;flex-direction:column;align-items:center;gap:16px}
.cert-print{width:100%;display:flex;justify-content:center}
.cert-svg{width:100%;max-width:780px;height:auto;border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
.cert-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.name-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;align-items:center}
.name-input{font-family:var(--font-display);font-weight:800;font-size:1.15rem;border:var(--border);border-radius:12px;padding:11px 16px;box-shadow:var(--shadow-sm);text-align:center;color:var(--ink);background:#fff;max-width:280px}
.name-input:focus-visible{outline:3px dashed var(--violet);outline-offset:2px}

@media print{
  header,footer,.quiz-controls,.cert-actions,.no-print,.locked-hint{display:none!important}
  body{background:#fff!important;background-image:none!important}
  body *{visibility:hidden}
  .cert-print,.cert-print *{visibility:visible}
  .cert-print{position:absolute;left:0;top:0;width:100%;padding:0;margin:0}
  .cert-svg{border:none!important;box-shadow:none!important;max-width:100%;border-radius:0}
}

/* ---------- certificate confetti ---------- */
.confetti-burst{position:fixed;inset:0;pointer-events:none;z-index:200;overflow:hidden}
.confetti-burst i{position:absolute;top:-12px;width:10px;height:14px;opacity:.95;will-change:transform;animation:confetti-fall linear forwards}
@keyframes confetti-fall{
  0%{transform:translateY(-10vh) rotate(0deg);opacity:1}
  100%{transform:translateY(110vh) rotate(720deg);opacity:.9}
}
@media (prefers-reduced-motion:reduce){.confetti-burst{display:none}}
.cert-id{font-family:var(--font-robot);font-size:.74rem;letter-spacing:.06em;color:var(--ink-soft);text-align:center}

/* ============================================================
   ARTICLES / BLOG
   ============================================================ */
.crumbs{font-size:.86rem;color:var(--ink-soft);padding:18px 0 0}
.crumbs a{color:var(--ink-soft)}
.article{max-width:720px;margin:0 auto;padding:8px 0 40px}
.article h1{font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.15;margin:14px 0 8px}
.article .byline{font-family:var(--font-robot);font-size:.8rem;color:var(--ink-soft);margin-bottom:22px}
.article h2{font-size:1.45rem;margin:30px 0 10px}
.article h3{font-size:1.15rem;margin:22px 0 8px}
.article p{margin-bottom:15px;line-height:1.7}
.article ul,.article ol{margin:0 0 16px 22px}
.article li{margin-bottom:8px;line-height:1.6}
.article a{color:var(--violet);font-weight:700}
.article .lead{font-size:1.12rem;color:var(--ink-soft)}
.callout{background:var(--sky);border:2px dashed var(--ink);border-radius:16px;padding:16px 18px;margin:20px 0}
.callout .tag{display:inline-block;font-family:var(--font-robot);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;background:var(--sun);border:2px solid var(--ink);border-radius:999px;padding:1px 10px;margin-bottom:8px}
.cta-box{background:var(--white);border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin:30px 0;text-align:center}
.cta-box h3{margin-bottom:8px}
.cta-box p{color:var(--ink-soft);margin-bottom:14px}
.related{border-top:var(--border);margin-top:36px;padding-top:22px}
.related h2{font-size:1.2rem;margin-bottom:12px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.related-card{display:block;border:var(--border);border-radius:16px;box-shadow:var(--shadow-sm);padding:16px;background:var(--white);color:var(--ink);font-weight:700;line-height:1.35;transition:transform .12s,box-shadow .12s}
.related-card:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.blog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:24px 0 50px}
.blog-card{display:flex;flex-direction:column;gap:8px;border:var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;background:var(--white);color:var(--ink);transition:transform .14s,box-shadow .14s}
.blog-card:hover{transform:translate(-3px,-3px);box-shadow:8px 8px 0 var(--ink)}
.blog-card h2{font-size:1.18rem;line-height:1.3}
.blog-card p{font-size:.94rem;color:var(--ink-soft)}
.blog-card .tag{font-family:var(--font-robot);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--violet)}
@media(max-width:680px){.related-grid{grid-template-columns:1fr}.blog-grid{grid-template-columns:1fr}}

/* ---- topic filter + chips ---- */
.topic-filter{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 6px}
.topic-btn{font-family:var(--font-display);font-weight:700;font-size:.85rem;border:2px solid var(--ink);border-radius:999px;background:#fff;padding:5px 14px;cursor:pointer;color:var(--ink);box-shadow:var(--shadow-sm);transition:transform .1s}
.topic-btn:hover{transform:translate(-1px,-1px)}
.topic-btn.active{background:var(--violet);color:#fff}
.card-topics{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}
.topic-pill{font-family:var(--font-robot);font-size:.62rem;letter-spacing:.04em;text-transform:uppercase;border:2px solid var(--ink);border-radius:999px;padding:1px 8px;background:var(--sky);color:var(--ink);display:inline-block}
a.topic-pill{text-decoration:none}
a.topic-pill:hover{background:var(--sun)}
.topic-tags{display:flex;flex-wrap:wrap;gap:6px;margin:2px 0 20px}
.article .topic-tags a.topic-pill{font-weight:700;color:var(--ink)}