/* =========================================================
   LIGHT SOLUTIONS AI LAB — website
   Palette: paper #FFFFFF, ink #182233, ink-soft #6B7385
   Accents: magenta #962E70, cyan #1090C8, violet #6B4FA0
   Font: Manrope
   ========================================================= */

:root{
  --paper: #FFFFFF;
  --paper-2: #FAFAFB;
  --ink: #182233;
  --ink-soft: #6B7385;
  --line: #E7E8ED;
  --line-strong: #D3D5DC;
  --magenta: #962E70;
  --cyan: #1090C8;
  --violet: #6B4FA0;
  --radius: 12px;
  --container: 1180px;
  --font: 'Manrope', sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } *{ transition-duration:.01ms !important; animation-duration:.01ms !important; } }

body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font); font-size:16px; line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{ font-family:var(--font); font-weight:800; line-height:1.15; letter-spacing:-0.01em; margin:0 0 0.5em; }
h1{ font-size:clamp(2.1rem,4.4vw,3.2rem); }
h2{ font-size:clamp(1.6rem,2.8vw,2.2rem); }
h3{ font-size:1.1rem; }
p{ margin:0 0 1em; color:#ffffff; max-width:62ch; }
a{ color:inherit; }
ul{ margin:0; padding:0; list-style:none; }

.wrap{ max-width:var(--container); margin:0 auto; padding:0 28px; }

.skip-link{ position:absolute; left:-999px; top:0; background:var(--ink); color:#fff; padding:12px 18px; z-index:999; }
.skip-link:focus{ left:12px; top:12px; }
:focus-visible{ outline:2px solid var(--violet); outline-offset:3px; }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 26px; border-radius:999px; font-weight:700; font-size:0.95rem;
  text-decoration:none; border:1.5px solid transparent; cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--ink); color:#fff; }
.btn-primary:hover{ background:#000; }
.btn-ghost{ background:transparent; border-color:var(--line-strong); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-sm{ padding:9px 18px; font-size:0.85rem; }
.btn-lg{ padding:16px 34px; font-size:1rem; }

/* Header */
.site-header{ position:sticky; top:0; z-index:100; background:rgba(255,255,255,0.92); backdrop-filter:blur(8px); border-bottom:1px solid var(--line); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:78px; }
.logo{ display:flex; align-items:center; text-decoration:none; }
.logo-img{ height:44px; width:auto; display:block; }

.main-nav{ display:flex; gap:30px; }
.main-nav a{ text-decoration:none; color:var(--ink-soft); font-weight:600; font-size:0.95rem; position:relative; padding:4px 0; }
.main-nav a:hover{ color:var(--ink); }
.main-nav a::after{ content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px; background:var(--magenta); transform:scaleX(0); transform-origin:left; transition:transform .2s ease; }
.main-nav a:hover::after{ transform:scaleX(1); }

.header-actions{ display:flex; align-items:center; gap:18px; }
.header-phone{ font-weight:600; font-size:0.9rem; text-decoration:none; color:var(--ink); display:none; }
.nav-toggle{ display:none; flex-direction:column; justify-content:center; gap:5px; width:36px; height:36px; background:none; border:none; cursor:pointer; padding:0; }
.nav-toggle span{ display:block; height:2px; background:var(--ink); border-radius:2px; }

/* Hero */
.hero{ padding:60px 0 88px; }
.hero-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }

.brand-dots{ display:flex; gap:8px; margin-bottom:20px; }
.brand-dots span{ width:10px; height:10px; border-radius:3px; }
.brand-dots span:nth-child(1){ background:var(--magenta); }
.brand-dots span:nth-child(2){ background:var(--cyan); }
.brand-dots span:nth-child(3){ background:var(--violet); }

.hero-lede{ font-size:1.08rem; max-width:46ch; }
.hero-cta{ display:flex; gap:14px; margin:28px 0 40px; flex-wrap:wrap; }

.hero-stats{ display:flex; gap:40px; margin:0; }
.hero-stats dt{ font-weight:800; font-size:1.7rem; color:var(--ink); }
.hero-stats dd{ margin:0; font-size:0.85rem; color:var(--ink-soft); }

.hero-panel{ background:var(--paper-2); border:1px solid var(--line); border-radius:16px; padding:28px; }
.hp-row{ display:flex; align-items:flex-start; gap:14px; padding:14px 0; border-bottom:1px solid var(--line); }
.hp-row:first-child{ padding-top:0; }
.hp-dot{ width:12px; height:12px; border-radius:4px; margin-top:5px; flex:none; }
.hp-title{ font-weight:700; font-size:0.98rem; }
.hp-text{ font-size:0.85rem; color:var(--ink-soft); margin-top:2px; }
.hp-cta{ display:block; text-align:center; margin-top:20px; font-weight:700; text-decoration:none; color:var(--magenta); }
.hp-cta:hover{ text-decoration:underline; }

/* Sections */
.section{ padding:88px 0; }
.section-head{ max-width:640px; margin-bottom:44px; }
.benefits-section{ background:var(--paper-2); }

/* Course list */
.course-list{ display:flex; flex-direction:column; gap:20px; }
.course-card{
  border:1px solid var(--line); border-radius:16px; padding:32px;
  display:grid; grid-template-columns:1.3fr 1fr; gap:32px;
  border-left:4px solid var(--cat-color, var(--magenta));
}
.course-top{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.course-card h3{ margin:0; }
.course-meta{ font-size:0.82rem; color:var(--ink-soft); white-space:nowrap; }
.course-desc{ margin-top:10px; font-size:0.96rem; }
.course-cta{ margin-top:16px; display:inline-flex; align-items:center; gap:6px; font-weight:700; text-decoration:none; color:var(--ink); }
.course-cta:hover{ color:var(--magenta); }

.price-table{ width:100%; border-collapse:collapse; font-size:0.84rem; align-self:start; }
.price-table caption{ text-align:left; font-size:0.78rem; color:var(--ink-soft); margin-bottom:8px; font-weight:600; }
.price-table th{ text-align:left; font-weight:700; color:var(--ink-soft); padding:8px 10px; border-bottom:1.5px solid var(--line-strong); font-size:0.76rem; text-transform:none; }
.price-table td{ padding:10px 10px; border-bottom:1px solid var(--line); font-weight:600; }
.price-table tr:last-child td{ border-bottom:none; }
.price-table .price-note{ font-size:0.72rem; color:var(--ink-soft); font-weight:500; }

/* Benefits grid */
.benefits-grid{ display:grid; grid-template-columns:repeat(3,1fr); column-gap:32px; row-gap:26px; }
.benefit{ display:flex; align-items:flex-start; gap:12px; }
.b-dot{ width:12px; height:12px; border-radius:3px; margin-top:6px; flex:none; }
.b-title{ font-weight:700; font-size:1rem; }
.b-text{ margin-top:2px; font-size:0.88rem; color:var(--ink-soft); }

/* Steps */
.steps-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }
.step-title{ font-weight:700; font-size:1rem; padding-top:14px; border-top:3px solid var(--magenta); }
.step:nth-child(2) .step-title{ border-top-color:var(--cyan); }
.step:nth-child(3) .step-title{ border-top-color:var(--violet); }
.step:nth-child(4) .step-title{ border-top-color:var(--ink-soft); }
.step-text{ margin-top:6px; font-size:0.88rem; color:var(--ink-soft); }
.steps-cta{ margin-top:44px; text-align:center; }

/* Footer */
.site-footer{ background:var(--ink); color:rgba(255,255,255,0.78); padding:64px 0 0; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,0.14); }
.footer-logo{ height:40px; width:auto; margin-bottom:14px; filter:brightness(0) invert(1); }
.footer-grid h3{ color:#fff; font-size:0.85rem; font-weight:700; margin-bottom:16px; }
.footer-grid ul{ display:flex; flex-direction:column; gap:10px; }
.footer-grid a{ text-decoration:none; color:#ffffff; font-size:0.92rem; }
.footer-grid a:hover{ color:#fff; }
.footer-grid li{ font-size:0.92rem; color:rgba(255,255,255,0.72); }
.footer-bottom{ padding:22px 0; font-size:0.8rem; color:rgba(255,255,255,0.5); }

/* Responsive */
@media (min-width:860px){ .header-phone{ display:inline; } }

@media (max-width:980px){
  .hero-grid{ grid-template-columns:1fr; }
  .course-card{ grid-template-columns:1fr; }
  .benefits-grid{ grid-template-columns:repeat(2,1fr); }
  .steps-grid{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width:720px){
  .main-nav{ position:absolute; top:78px; left:0; right:0; background:var(--paper); border-bottom:1px solid var(--line); flex-direction:column; padding:18px 28px; gap:16px; display:none; }
  .main-nav.is-open{ display:flex; }
  .nav-toggle{ display:flex; }
  .header-phone{ display:none; }
  .benefits-grid{ grid-template-columns:1fr; }
  .steps-grid{ grid-template-columns:1fr; }
  .section{ padding:64px 0; }
  .footer-grid{ grid-template-columns:1fr; }
  .course-card{ padding:22px; }
  .price-table{ font-size:0.76rem; }
  .price-table th, .price-table td{ padding:8px 6px; }
}