/* =========================================================
   Sparx Maths — Design tokens (dark / amber accent)
   ========================================================= */
:root{
  --bg:#0B0E14;
  --bg-alt:#10141C;
  --surface:#151A24;
  --surface-2:#1B212D;
  --border:#262D3A;
  --text:#EDF0F5;
  --text-light:#9AA3B5;

  --accent:#FFB020;
  --accent-dark:#E69A0C;
  --accent-2:#4FD1C5;
  --success:#34D399;
  --danger:#F87171;

  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;

  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.3);
  --shadow-md:0 12px 30px rgba(0,0,0,.35);
  --shadow-lg:0 24px 60px rgba(255,176,32,.16);
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:var(--font-body);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.15;margin:0 0 .5em;color:var(--text);}
p{margin:0 0 1em;}
input,textarea{font:inherit;}

.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#0B0E14;padding:10px 16px;border-radius:0 0 8px 0;z-index:999;}
.skip-link:focus{left:0;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:760px;}

/* =========================================================
   Buttons
   ========================================================= */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:999px;padding:14px 28px;transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;white-space:nowrap;}
.btn-sm{padding:9px 18px;font-size:.9rem;}
.btn-lg{padding:16px 32px;font-size:1rem;}
.btn-primary{background:linear-gradient(135deg,#FFC94D,var(--accent));color:#0B0E14;box-shadow:var(--shadow-lg);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 28px 60px rgba(255,176,32,.24);}
.btn-outline{border:2px solid var(--border);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-white{background:#fff;color:#0B0E14;box-shadow:0 10px 30px rgba(0,0,0,.3);}
.btn-white:hover{transform:translateY(-2px);}
.btn-outline-white{border:2px solid rgba(255,255,255,.5);color:#fff;}
.btn-outline-white:hover{background:rgba(255,255,255,.1);transform:translateY(-2px);}
.btn-ghost{background:var(--surface-2);color:var(--text);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--accent-2);color:var(--accent-2);}

/* =========================================================
   Header
   ========================================================= */
.site-header{position:sticky;top:0;z-index:100;border-bottom:1px solid transparent;transition:box-shadow .3s ease, border-color .3s ease;}
.site-header::before{content:"";position:absolute;inset:0;z-index:-1;background:rgba(11,14,20,.72);backdrop-filter:blur(14px) saturate(160%);-webkit-backdrop-filter:blur(14px) saturate(160%);transition:background .3s ease;}
.site-header.scrolled{box-shadow:var(--shadow-sm);border-color:var(--border);}
.site-header.scrolled::before{background:rgba(11,14,20,.92);}
.header-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px;}

.brand{display:flex;align-items:center;gap:10px;}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:1.25rem;letter-spacing:-.01em;}
.brand-name em{font-style:normal;color:var(--accent);}

.main-nav ul{display:flex;gap:4px;}
.main-nav a{padding:10px 14px;border-radius:999px;font-weight:500;font-size:.95rem;color:var(--text-light);transition:background .2s ease, color .2s ease;}
.main-nav a:hover, .main-nav a.active{color:var(--accent);background:rgba(255,176,32,.1);}

.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-light);transition:background .2s ease, color .2s ease;}
.icon-btn:hover{background:rgba(255,176,32,.12);color:var(--accent);}

.hamburger{display:none;width:40px;height:40px;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease, opacity .25s ease;}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.search-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;border-bottom:1px solid transparent;}
.search-panel.open{max-height:280px;border-color:var(--border);}
.search-panel-inner{max-width:1240px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:12px;color:var(--text-light);}
.search-panel-inner input{flex:1;border:none;background:transparent;font-size:1rem;color:var(--text);}
.search-panel-inner input:focus{outline:none;}
.search-results{max-width:1240px;margin:0 auto;padding:0 24px 16px;display:flex;flex-direction:column;gap:6px;}
.search-results a{padding:10px 14px;border-radius:10px;background:var(--surface);font-size:.92rem;color:var(--text);}
.search-results a:hover{background:var(--surface-2);color:var(--accent);}
.search-results .no-results{color:var(--text-light);font-size:.9rem;padding:8px 14px;}

/* =========================================================
   Hero
   ========================================================= */
.hero{position:relative;overflow:hidden;padding:calc(var(--header-h) + 56px) 0 90px;background:
  radial-gradient(1100px 500px at 85% -10%, rgba(255,176,32,.08), transparent 60%),
  var(--bg);}

.hero-grid-bg{position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(70% 60% at 70% 20%, #000 20%, transparent 75%);
  -webkit-mask-image:radial-gradient(70% 60% at 70% 20%, #000 20%, transparent 75%);
}

.hero-floaters{position:absolute;inset:0;pointer-events:none;}
.floater{position:absolute;font-family:var(--font-display);font-weight:700;color:var(--accent);opacity:.14;animation:floatY 7s ease-in-out infinite;}
.f1{top:14%;left:6%;font-size:2.6rem;}
.f2{top:66%;left:10%;font-size:2.2rem;color:var(--accent-2);animation-delay:1.1s;}
.f3{top:24%;left:46%;font-size:1.9rem;color:var(--success);animation-delay:.5s;}
.f4{top:78%;left:40%;font-size:2.4rem;animation-delay:1.6s;}
.f5{top:10%;left:60%;font-size:2rem;color:var(--accent-2);animation-delay:.9s;}
.f6{top:50%;left:4%;font-size:1.6rem;color:var(--success);animation-delay:2s;}
.f7{top:36%;left:88%;font-size:1.8rem;animation-delay:.3s;}
.f8{top:82%;left:82%;font-size:2rem;animation-delay:1.4s;}

@keyframes floatY{0%,100%{transform:translateY(0) rotate(0deg);}50%{transform:translateY(-18px) rotate(6deg);}}

.hero-inner{position:relative;max-width:1240px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}

.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);background:rgba(255,176,32,.1);padding:6px 14px;border-radius:999px;margin-bottom:18px;}

.hero-copy h1{font-size:clamp(2.4rem, 4.2vw, 3.6rem);letter-spacing:-.02em;margin-bottom:20px;}
.text-gradient{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:1.08rem;color:var(--text-light);max-width:56ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 36px;}
.hero-trust{display:flex;gap:36px;flex-wrap:wrap;}
.trust-item{display:flex;flex-direction:column;}
.trust-item strong{font-family:var(--font-mono);font-size:1.4rem;color:var(--accent);}
.trust-item span{font-size:.85rem;color:var(--text-light);}

/* ---------- hero try-it widget ---------- */
.hero-visual{position:relative;}
.try-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:26px;}
.try-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.try-card-label{font-size:.78rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--accent-2);}
.try-card-count{font-family:var(--font-mono);font-size:.8rem;color:var(--text-light);}
.try-card-question{font-family:var(--font-display);font-size:1.25rem;color:var(--text);margin-bottom:18px;}
.try-card-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;}
.try-option{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-family:var(--font-mono);font-weight:600;font-size:.95rem;text-align:center;transition:border-color .2s ease, background .2s ease, transform .15s ease;}
.try-option:hover{border-color:var(--accent);transform:translateY(-2px);}
.try-option.correct{background:rgba(52,211,153,.16);border-color:var(--success);color:var(--success);}
.try-option.incorrect{background:rgba(248,113,113,.16);border-color:var(--danger);color:var(--danger);}
.try-option:disabled{cursor:default;}
.try-card-feedback{min-height:1.4em;font-weight:600;font-size:.92rem;}
.try-card-feedback.correct{color:var(--success);}
.try-card-feedback.incorrect{color:var(--danger);}

.floating-badge{position:absolute;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:10px 14px;box-shadow:var(--shadow-md);font-size:.82rem;font-weight:600;animation:floatY 6s ease-in-out infinite;}
.badge-1{top:-18px;right:-6px;}
.badge-2{bottom:-16px;left:-18px;animation-delay:1s;}

/* =========================================================
   Sections / generic
   ========================================================= */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center;}
.section-head h2{font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.01em;}
.section-sub{color:var(--text-light);font-size:1.02rem;}
.section-head.light .eyebrow{background:rgba(255,255,255,.14);color:#fff;}
.section-head.light h2{color:#fff;}
.section-head.light .section-sub{color:rgba(255,255,255,.75);}

.grid{display:grid;gap:24px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-5{grid-template-columns:repeat(5,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}

/* =========================================================
   Cards
   ========================================================= */
.card{background:var(--surface);border-radius:var(--radius-md);padding:28px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(255,176,32,.35);}

.feature-card .icon-wrap{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(255,176,32,.1);color:var(--accent);margin-bottom:18px;}
.feature-card h3{font-size:1.08rem;margin-bottom:8px;}
.feature-card p{color:var(--text-light);font-size:.92rem;margin:0;}

.category-card{display:flex;flex-direction:column;gap:14px;text-align:left;cursor:pointer;}
.category-visual{height:96px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:2.2rem;font-family:var(--font-mono);font-weight:700;color:#0B0E14;}
.category-card h3{font-size:1.02rem;margin:0;}
.category-card p{color:var(--text-light);font-size:.86rem;margin:0 0 6px;flex-grow:1;}
.explore-link{font-weight:600;font-size:.88rem;color:var(--accent);display:inline-flex;align-items:center;gap:6px;}
.explore-link svg{transition:transform .2s ease;}
.category-card:hover .explore-link svg{transform:translateX(4px);}

.why-card{text-align:left;}
.why-card .check{width:38px;height:38px;border-radius:10px;background:rgba(52,211,153,.14);color:var(--success);display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.why-card h3{font-size:1.05rem;}
.why-card p{color:var(--text-light);font-size:.9rem;margin:0;}

.tool-card{text-align:left;cursor:pointer;}
.tool-visual{height:120px;border-radius:12px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--accent-2);}
.tool-card h3{font-size:1.05rem;}
.tool-card p{color:var(--text-light);font-size:.9rem;}
.tool-card .learn-more{margin-top:8px;display:inline-block;font-weight:600;font-size:.88rem;color:var(--accent);}

.resource-card, .worksheet-card{text-align:left;cursor:pointer;}
.resource-card .icon-wrap, .worksheet-card .icon-wrap{width:52px;height:52px;border-radius:14px;background:rgba(255,176,32,.1);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.worksheet-card .icon-wrap{background:rgba(79,209,197,.12);color:var(--accent-2);}
.resource-card h3, .worksheet-card h3{font-size:1.05rem;}
.resource-card p, .worksheet-card p{color:var(--text-light);font-size:.9rem;}
.level-tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--success);background:rgba(52,211,153,.14);padding:4px 10px;border-radius:999px;margin-bottom:12px;}

/* =========================================================
   Tag grid
   ========================================================= */
.tag-grid{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.tag-pill{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:12px 22px;font-weight:600;font-size:.94rem;color:var(--text);transition:transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;box-shadow:var(--shadow-sm);cursor:pointer;}
.tag-pill:hover{background:var(--accent);color:#0B0E14;border-color:var(--accent);transform:translateY(-3px);}

/* =========================================================
   Timeline
   ========================================================= */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;position:relative;}
.timeline::before{content:"";position:absolute;top:34px;left:10%;right:10%;height:2px;background:repeating-linear-gradient(90deg,var(--border) 0 8px, transparent 8px 16px);z-index:0;}
.timeline-step{position:relative;text-align:center;}
.timeline-icon{width:68px;height:68px;border-radius:50%;background:var(--surface);border:2px solid var(--border);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;position:relative;z-index:1;box-shadow:var(--shadow-sm);transition:border-color .25s ease, transform .25s ease;}
.timeline-step:hover .timeline-icon{border-color:var(--accent);transform:scale(1.06);}
.timeline-step h3{font-size:1rem;margin-bottom:6px;}
.timeline-step p{font-size:.85rem;color:var(--text-light);margin:0;}

/* =========================================================
   Stats
   ========================================================= */
.stats-section{background:linear-gradient(135deg,#12161F,#1B212D);position:relative;overflow:hidden;}
.stats-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,176,32,.06) 1px, transparent 1px),linear-gradient(90deg, rgba(255,176,32,.06) 1px, transparent 1px);background-size:46px 46px;}
.stat-card{position:relative;text-align:center;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius-md);padding:32px 20px;}
.stat-number{display:block;font-family:var(--font-mono);font-size:2.4rem;font-weight:700;color:var(--accent);}
.stat-label{color:var(--text-light);font-size:.92rem;}

/* =========================================================
   Accordion
   ========================================================= */
.accordion-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;}
.accordion-trigger{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-weight:600;text-align:left;font-size:1rem;}
.accordion-trigger .plus{width:24px;height:24px;flex-shrink:0;position:relative;}
.accordion-trigger .plus::before,.accordion-trigger .plus::after{content:"";position:absolute;background:var(--accent);top:50%;left:50%;transform:translate(-50%,-50%);transition:transform .25s ease;}
.accordion-trigger .plus::before{width:14px;height:2px;}
.accordion-trigger .plus::after{width:2px;height:14px;}
.accordion-item.open .plus::after{transform:translate(-50%,-50%) rotate(90deg) scaleY(0);}
.accordion-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.accordion-panel p{padding:0 24px 20px;color:var(--text-light);margin:0;font-size:.95rem;}

/* =========================================================
   About
   ========================================================= */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.about-list{margin:0;padding:0;}
.about-list li{position:relative;padding-left:28px;margin-bottom:12px;color:var(--text-light);}
.about-list li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;background:rgba(52,211,153,.16);box-shadow:inset 0 0 0 2px var(--success);}
.about-visual svg{display:block;filter:drop-shadow(var(--shadow-md));}

/* =========================================================
   CTA
   ========================================================= */
.cta-section{position:relative;overflow:hidden;background:linear-gradient(135deg,#B8860B,var(--accent) 45%,var(--accent-2) 150%);padding:90px 0;text-align:center;}
.cta-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(0,0,0,.08) 1px, transparent 1px),linear-gradient(90deg, rgba(0,0,0,.08) 1px, transparent 1px);background-size:46px 46px;opacity:.5;}
.cta-inner{position:relative;max-width:640px;}
.cta-inner h2{color:#0B0E14;font-size:clamp(1.8rem,3.4vw,2.6rem);}
.cta-inner p{color:rgba(11,14,20,.82);font-size:1.05rem;margin-bottom:8px;}

/* =========================================================
   Contact form
   ========================================================= */
.contact-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-sm);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-field{margin-bottom:20px;display:flex;flex-direction:column;gap:6px;}
.form-field label{font-weight:600;font-size:.9rem;}
.form-field input,.form-field textarea{border:1px solid var(--border);border-radius:10px;padding:12px 14px;background:var(--bg-alt);color:var(--text);transition:border-color .2s ease, background .2s ease;}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--accent);}
.form-note{margin:14px 0 0;font-size:.9rem;color:var(--success);font-weight:600;min-height:1.2em;}

/* =========================================================
   Footer
   ========================================================= */
.site-footer{background:#07090D;color:#8B93A7;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px;}
.brand-footer{margin-bottom:16px;}
.brand-footer .brand-name{color:#fff;}
.brand-footer .brand-name em{color:var(--accent);}
.footer-about{font-size:.92rem;color:#6B7386;max-width:38ch;}
.footer-col h3{color:#fff;font-size:.95rem;margin-bottom:18px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:#8B93A7;font-size:.92rem;transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;padding:22px 24px;flex-wrap:wrap;gap:12px;}
.footer-bottom p{margin:0;font-size:.85rem;color:#575E70;}
.social-icons{display:flex;gap:10px;}
.social-icons a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.05);display:flex;align-items:center;justify-content:center;color:#8B93A7;transition:background .2s ease, color .2s ease;}
.social-icons a:hover{background:var(--accent);color:#0B0E14;}

/* =========================================================
   Back to top
   ========================================================= */
.back-to-top{position:fixed;bottom:28px;right:28px;width:48px;height:48px;border-radius:50%;background:var(--accent);color:#0B0E14;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s ease, transform .25s ease, visibility .25s ease;z-index:90;}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{transform:translateY(-3px);}

/* =========================================================
   Modal
   ========================================================= */
.modal-overlay{position:fixed;inset:0;background:rgba(4,5,8,.72);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:200;opacity:0;transition:opacity .2s ease;}
.modal-overlay.open{opacity:1;}
.modal-overlay[hidden]{display:none;}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);max-width:520px;width:100%;max-height:86vh;overflow-y:auto;padding:32px;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.5);transform:translateY(16px) scale(.98);transition:transform .25s ease;}
.modal-overlay.open .modal{transform:translateY(0) scale(1);}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--text-light);}
.modal-close:hover{color:var(--accent);}

.quiz-eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--accent);}
.quiz-progress{font-family:var(--font-mono);font-size:.82rem;color:var(--text-light);margin-bottom:18px;}
.quiz-question{font-family:var(--font-display);font-size:1.3rem;margin:8px 0 20px;padding-right:24px;}
.quiz-options{display:grid;gap:10px;margin-bottom:16px;}
.quiz-option{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:14px 16px;text-align:left;font-weight:600;transition:border-color .2s ease, background .2s ease, transform .15s ease;}
.quiz-option:hover:not(:disabled){border-color:var(--accent);transform:translateX(2px);}
.quiz-option.correct{background:rgba(52,211,153,.16);border-color:var(--success);color:var(--success);}
.quiz-option.incorrect{background:rgba(248,113,113,.16);border-color:var(--danger);color:var(--danger);}
.quiz-option:disabled{cursor:default;}
.quiz-feedback{min-height:1.6em;font-weight:600;margin-bottom:18px;}
.quiz-feedback.correct{color:var(--success);}
.quiz-feedback.incorrect{color:var(--danger);}
.quiz-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.quiz-score{font-family:var(--font-mono);font-size:.85rem;color:var(--text-light);}
.quiz-summary{text-align:center;}
.quiz-summary .big-score{font-family:var(--font-mono);font-size:2.6rem;color:var(--accent);display:block;margin:12px 0;}

.info-title{font-size:1.3rem;margin-bottom:14px;padding-right:24px;}
.info-body{color:var(--text-light);font-size:.96rem;}
.info-body ul{margin:12px 0;padding-left:0;}
.info-body li{position:relative;padding-left:22px;margin-bottom:8px;}
.info-body li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--accent);}
.info-body .formula{font-family:var(--font-mono);color:var(--accent-2);background:var(--surface-2);padding:2px 8px;border-radius:6px;}

/* =========================================================
   Toast
   ========================================================= */
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);background:var(--surface);border:1px solid var(--border);color:var(--text);padding:14px 22px;border-radius:12px;box-shadow:var(--shadow-md);font-size:.92rem;font-weight:600;z-index:300;opacity:0;transition:opacity .25s ease, transform .25s ease;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}
.toast[hidden]{display:none;}

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* =========================================================
   Responsive
   ========================================================= */
@media(max-width:1080px){
  .grid-5{grid-template-columns:repeat(3,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(3,1fr);row-gap:40px;}
  .timeline::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media(max-width:900px){
  .main-nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--bg);transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;padding:20px 0;}
  .main-nav.open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;padding:0 24px;gap:6px;}
  .main-nav a{display:block;padding:14px 16px;font-size:1.05rem;}
  .hamburger{display:flex;}
  .header-actions .btn-sm{display:none;}
  .hero-inner{grid-template-columns:1fr;text-align:center;}
  .hero-actions{justify-content:center;}
  .hero-trust{justify-content:center;}
  .hero-visual{max-width:420px;margin:0 auto;}
  .try-card-options{grid-template-columns:1fr 1fr;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-5{grid-template-columns:repeat(2,1fr);}
  .about-grid{grid-template-columns:1fr;}
  .about-visual{order:-1;max-width:360px;margin:0 auto;}
}

@media(max-width:640px){
  .section{padding:64px 0;}
  .grid-3,.grid-4,.grid-5{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero{padding-top:calc(var(--header-h) + 32px);}
  .floater{display:none;}
  .f1,.f3,.f5,.f7{display:block;}
  .modal{padding:24px;}
}

/* =========================================================
   Standalone legal pages (Privacy / Terms / Disclaimer / Cookies)
   ========================================================= */
.legal-hero{padding:calc(var(--header-h) + 56px) 0 48px;border-bottom:1px solid var(--border);}
.legal-hero .eyebrow{margin-bottom:14px;}
.legal-hero h1{font-size:clamp(1.9rem,3.4vw,2.6rem);letter-spacing:-.01em;}
.legal-updated{color:var(--text-light);font-size:.92rem;margin-top:10px;}
.legal-content{padding:56px 0 96px;}
.legal-content h2{font-size:1.3rem;margin-top:2.4em;}
.legal-content h2:first-child{margin-top:0;}
.legal-content p{color:var(--text-light);}
.legal-content ul{margin:0 0 1em;}
.legal-content ul li{position:relative;padding-left:26px;margin-bottom:10px;color:var(--text-light);}
.legal-content ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent);}
.legal-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.legal-nav a{padding:8px 16px;border-radius:999px;border:1px solid var(--border);font-size:.88rem;font-weight:500;color:var(--text-light);transition:color .2s ease, border-color .2s ease;}
.legal-nav a:hover,.legal-nav a.active{color:var(--accent);border-color:var(--accent);}