/* ==========================================================================
   [BRAND_NAME] — styles.css
   Palette: deep navy base, ice-blue text, electric-blue action, brass accent
   ========================================================================== */

   :root {
    --navy-950: #050B1D;
    --navy-900: #07112B;
    --navy-800: #0C1B3F;
    --navy-700: #142755;
    --navy-600: #1F3670;
  
    --ice-100: #EAF1FF;
    --ice-300: #B9C8E8;
    --ice-500: #7E92BD;
  
    --blue-500: #3D7BFF;
    --blue-400: #6A9BFF;
    --brass-400: #E6B85C;
  
    --font-display: "Syne", system-ui, sans-serif;
    --font-body: "Instrument Sans", system-ui, sans-serif;
  
    --step--1: clamp(0.85rem, 0.82rem + 0.15vw, 0.95rem);
    --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
    --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
    --step-2: clamp(1.5rem, 1.3rem + 1vw, 2.1rem);
    --step-3: clamp(2rem, 1.6rem + 2vw, 3.2rem);
    --step-4: clamp(2.6rem, 1.8rem + 4vw, 5.2rem);
  
    --radius-s: 6px;
    --radius-m: 14px;
    --radius-l: 28px;
  
    --container: 1180px;
    --gutter: clamp(1rem, 4vw, 2.5rem);
    --section-y: clamp(4rem, 9vw, 8rem);
  
    --ease-out: cubic-bezier(.22, 1, .36, 1);
  }
  
  /* ---------- Reset ---------- */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--step-0);
    line-height: 1.6;
    color: var(--ice-100);
    background: var(--navy-900);
    overflow-x: hidden;
  }
  img, svg { display: block; max-width: 100%; }
  img { height: auto; }
  figure img { width: 100%; background: var(--navy-700); } /* width:100% prevents grid blow-out on mobile */
  .hero__inner > *, .about__inner > *, .insights__inner > *, .faq__inner > *, .cta__inner > *, .footer__inner > * { min-width: 0; }
  h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.1; margin: 0; letter-spacing: -0.015em; }
  p { margin: 0 0 1.1em; max-width: 68ch; }
  a { color: inherit; text-decoration: none; }
  ul, ol { margin: 0; padding: 0; }
  button { font: inherit; cursor: pointer; }
  :focus-visible { outline: 2px solid var(--brass-400); outline-offset: 3px; border-radius: 3px; }
  
  .container { width: min(var(--container), 100% - 2 * var(--gutter)); margin-inline: auto; }
  .visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .skip-link { position: absolute; left: 1rem; top: -3rem; background: var(--brass-400); color: var(--navy-950); padding: .5rem 1rem; border-radius: var(--radius-s); z-index: 100; }
  .skip-link:focus { top: 1rem; }
  
  /* ---------- Scroll progress ---------- */
  .scroll-progress {
    position: fixed; inset: 0 auto auto 0; height: 2px; width: 100%;
    background: linear-gradient(90deg, var(--blue-500), var(--brass-400));
    transform: scaleX(0); transform-origin: left; z-index: 90;
  }
  
  /* ---------- Buttons ---------- */
  .btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .85rem 1.5rem; border-radius: 999px;
    font-weight: 600; font-size: var(--step-0); line-height: 1;
    border: 1px solid transparent;
    transition: transform .25s var(--ease-out), background .25s, border-color .25s, box-shadow .25s;
  }
  .btn--sm { padding: .6rem 1.1rem; font-size: var(--step--1); }
  .btn--primary { background: var(--blue-500); color: #fff; box-shadow: 0 8px 28px -10px rgba(61,123,255,.7); }
  .btn--primary:hover { background: var(--blue-400); transform: translateY(-2px); box-shadow: 0 14px 34px -12px rgba(61,123,255,.8); }
  .btn--ghost { border-color: var(--navy-600); color: var(--ice-100); }
  .btn--ghost:hover { border-color: var(--ice-500); background: rgba(255,255,255,.04); }
  
  /* ---------- Header ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 80;
    background: rgba(7,17,43,.7); backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(185,200,232,.08);
    transition: padding .3s, background .3s;
  }
  .header__inner { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 0; transition: padding .3s; }
  .site-header.is-compact .header__inner { padding: .6rem 0; }
  .site-header.is-compact { background: rgba(5,11,29,.9); }
  
  .brand { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
  .brand__mark {
    width: 28px; height: 28px; border-radius: 8px;
    background: conic-gradient(from 210deg, var(--blue-500), var(--brass-400), var(--blue-500));
    position: relative;
  }
  .brand__mark::after { content: ""; position: absolute; inset: 6px; border-radius: 4px; background: var(--navy-900); }
  
  .nav { display: flex; align-items: center; gap: 1.5rem; }
  .nav__list { display: flex; gap: 1.6rem; list-style: none; }
  .nav__list a { position: relative; color: var(--ice-300); font-weight: 500; font-size: var(--step--1); padding: .3rem 0; }
  .nav__list a::after {
    content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%;
    background: var(--brass-400); transform: scaleX(0); transform-origin: right; transition: transform .3s var(--ease-out);
  }
  .nav__list a:hover::after, .nav__list a.is-active::after { transform: scaleX(1); transform-origin: left; }
  .nav__list a.is-active { color: var(--ice-100); }
  .nav__toggle { display: none; background: none; border: 0; padding: .5rem; width: 44px; height: 44px; flex-direction: column; justify-content: center; gap: 5px; }
  .nav__toggle span { display: block; height: 2px; width: 22px; background: var(--ice-100); transition: transform .3s, opacity .3s; }
  
  /* ---------- Hero ---------- */
  .hero { position: relative; padding: clamp(4rem, 8vw, 7rem) 0 var(--section-y); overflow: hidden; }
  .hero__bg { position: absolute; inset: 0; pointer-events: none; }
  .hero__grid {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(185,200,232,.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(185,200,232,.06) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, #000 30%, transparent 100%);
  }
  .orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; animation: drift 18s ease-in-out infinite alternate; }
  .orb--1 { width: 520px; height: 520px; background: var(--blue-500); top: -180px; left: -120px; }
  .orb--2 { width: 420px; height: 420px; background: var(--navy-600); right: -100px; bottom: -160px; animation-duration: 24s; animation-delay: -6s; }
  @keyframes drift { from { transform: translate(0,0) scale(1); } to { transform: translate(60px, 40px) scale(1.1); } }
  
  .hero__inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
  .hero__title { font-size: var(--step-4); font-weight: 800; letter-spacing: -0.03em; }
  .hero__title-line { display: block; font-weight: 500; color: var(--ice-300); font-size: .55em; margin-top: .35em; letter-spacing: -0.01em; }
  .hero__lead { margin-top: 1.6rem; font-size: var(--step-1); color: var(--ice-300); max-width: 56ch; }
  .hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
  
  .hero__stats { list-style: none; display: flex; gap: 2.5rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(185,200,232,.12); }
  .hero__stats li { display: flex; flex-direction: column; gap: .2rem; }
  .hero__stats strong { font-family: var(--font-display); font-size: var(--step-2); font-weight: 700; color: var(--brass-400); font-variant-numeric: tabular-nums; }
  .hero__stats span { color: var(--ice-500); font-size: var(--step--1); }
  
  .hero__media { margin: 0; position: relative; isolation: isolate; }
  .hero__media img { border-radius: var(--radius-l); aspect-ratio: 4 / 3; object-fit: cover; box-shadow: 0 40px 80px -30px rgba(0,0,0,.7); }
  .hero__media::before {
    content: ""; position: absolute; inset: -14px; border-radius: calc(var(--radius-l) + 14px);
    background: linear-gradient(135deg, rgba(61,123,255,.35), transparent 40%, rgba(230,184,92,.25));
    z-index: -1;
  }
  
  /* ---------- Sections ---------- */
  .section { padding: var(--section-y) 0; position: relative; }
  .section__head { max-width: 62ch; margin: 0 auto 3.5rem; text-align: center; }
  .section__head--left { text-align: left; margin-inline: 0; }
  .section__title { font-size: var(--step-3); font-weight: 700; margin-bottom: 1rem; }
  .section__sub { color: var(--ice-300); font-size: var(--step-1); margin: 0 auto; }
  .section__head--left .section__sub { margin-inline: 0; }
  
  /* ---------- About ---------- */
  .about { background: linear-gradient(180deg, var(--navy-900), var(--navy-800)); }
  .about__inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; }
  .about__text p { color: var(--ice-300); }
  .about__media { margin: 0; }
  .about__media img { border-radius: var(--radius-m); aspect-ratio: 9 / 11; object-fit: cover; }
  figcaption { font-size: var(--step--1); color: var(--ice-500); margin-top: .8rem; }
  
  .checklist { list-style: none; margin-top: 1.5rem; display: grid; gap: .7rem; }
  .checklist li { position: relative; padding-left: 1.8rem; color: var(--ice-100); }
  .checklist li::before {
    content: ""; position: absolute; left: 0; top: .5em; width: 12px; height: 12px;
    border-radius: 3px; background: var(--brass-400); transform: rotate(45deg);
  }
  
  /* ---------- Benefits ---------- */
  .benefits { background: var(--navy-800); }
  .benefits__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
  .benefit {
    padding: 1.8rem; border-radius: var(--radius-m);
    background: var(--navy-700); border: 1px solid rgba(185,200,232,.08);
    transition: transform .35s var(--ease-out), border-color .35s;
  }
  .benefit:hover { transform: translateY(-6px); border-color: rgba(61,123,255,.5); }
  .benefit__icon { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; background: rgba(61,123,255,.14); color: var(--blue-400); margin-bottom: 1.2rem; }
  .benefit__icon svg { width: 24px; height: 24px; }
  .benefit h3 { font-size: var(--step-1); margin-bottom: .6rem; }
  .benefit p { color: var(--ice-300); font-size: var(--step--1); margin: 0; }
  
  /* ---------- Process ---------- */
  .process { background: var(--navy-900); }
  .steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; counter-reset: step; position: relative; }
  .steps::before { content: ""; position: absolute; top: 28px; left: 8%; right: 8%; height: 1px; background: linear-gradient(90deg, transparent, var(--navy-600), transparent); }
  .step { display: grid; gap: 1.2rem; justify-items: start; position: relative; }
  .step__num {
    width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
    font-family: var(--font-display); font-weight: 700; font-size: 1.3rem;
    background: var(--navy-900); border: 1px solid var(--navy-600); color: var(--brass-400);
    position: relative; z-index: 1;
  }
  .step h3 { font-size: var(--step-1); margin-bottom: .5rem; }
  .step p { color: var(--ice-300); font-size: var(--step--1); }
  
  /* ---------- Insights ---------- */
  .insights { background: linear-gradient(180deg, var(--navy-900), var(--navy-800) 60%, var(--navy-900)); }
  .insights__inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
  .insights__media { margin: 0; position: sticky; top: 6rem; }
  .insights__media img { border-radius: var(--radius-m); aspect-ratio: 3 / 2; object-fit: cover; }
  .insights__text h3 { font-size: var(--step-1); margin: 2rem 0 .7rem; color: var(--ice-100); }
  .insights__text p { color: var(--ice-300); }
  .pull {
    margin: 2.5rem 0 0; padding: 1.6rem 1.8rem;
    border-left: 3px solid var(--brass-400); background: rgba(230,184,92,.06); border-radius: 0 var(--radius-m) var(--radius-m) 0;
    font-family: var(--font-display); font-size: var(--step-1); font-weight: 500; line-height: 1.35;
  }
  .pull cite { display: block; margin-top: 1rem; font-family: var(--font-body); font-style: normal; font-size: var(--step--1); color: var(--ice-500); }
  
  /* ---------- FAQ ---------- */
  .faq { background: var(--navy-800); }
  .faq__inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 5vw, 5rem); }
  .accordion { display: grid; gap: .6rem; }
  .accordion__item { border: 1px solid rgba(185,200,232,.1); border-radius: var(--radius-m); background: var(--navy-900); overflow: hidden; }
  .accordion__item summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.2rem 1.4rem; cursor: pointer; }
  .accordion__item summary::-webkit-details-marker { display: none; }
  .accordion__item h3 { font-size: var(--step-0); font-weight: 600; font-family: var(--font-body); }
  .accordion__icon { position: relative; flex: 0 0 22px; height: 22px; }
  .accordion__icon::before, .accordion__icon::after { content: ""; position: absolute; inset: 50% auto auto 50%; background: var(--brass-400); transition: transform .3s var(--ease-out); }
  .accordion__icon::before { width: 14px; height: 2px; transform: translate(-50%, -50%); }
  .accordion__icon::after { width: 2px; height: 14px; transform: translate(-50%, -50%); }
  .accordion__item[open] .accordion__icon::after { transform: translate(-50%, -50%) rotate(90deg); }
  .accordion__panel { padding: 0 1.4rem 1.3rem; color: var(--ice-300); }
  .accordion__panel p { margin: 0; }
  
  /* ---------- CTA ---------- */
  .cta { background: var(--navy-900); }
  .cta__inner {
    display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center;
    padding: clamp(2rem, 5vw, 4rem); border-radius: var(--radius-l);
    background: radial-gradient(120% 140% at 0% 0%, var(--navy-600), var(--navy-800) 60%);
    border: 1px solid rgba(61,123,255,.25);
  }
  .cta__copy p { color: var(--ice-300); margin: 0; }
  .cta__form { display: grid; gap: .8rem; }
  .cta__form input {
    padding: .95rem 1.2rem; border-radius: 999px; border: 1px solid var(--navy-600);
    background: var(--navy-950); color: var(--ice-100); font: inherit;
  }
  .cta__form input::placeholder { color: var(--ice-500); }
  .cta__form input:focus { border-color: var(--blue-500); outline: none; }
  .cta__note { font-size: var(--step--1); color: var(--ice-500); margin: 0; }
  
  /* ---------- Footer ---------- */
  .site-footer { background: var(--navy-950); border-top: 1px solid rgba(185,200,232,.08); padding-top: 4rem; }
  .footer__inner { display: grid; grid-template-columns: 1.2fr 2fr; gap: 3rem; padding-bottom: 3rem; }
  .footer__brand p { color: var(--ice-500); margin-top: 1rem; font-size: var(--step--1); }
  .footer__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
  .footer__nav h4 { font-family: var(--font-body); font-weight: 600; font-size: var(--step--1); color: var(--ice-100); margin-bottom: 1rem; }
  .footer__nav ul { list-style: none; display: grid; gap: .6rem; }
  .footer__nav a { color: var(--ice-500); font-size: var(--step--1); transition: color .2s; }
  .footer__nav a:hover { color: var(--ice-100); }
  .footer__bottom { display: flex; justify-content: space-between; align-items: center; padding: 1.4rem 0; border-top: 1px solid rgba(185,200,232,.08); font-size: var(--step--1); color: var(--ice-500); }
  .footer__bottom p { margin: 0; }
  .to-top { color: var(--ice-300); }
  
  /* ---------- Reveal animation (page-load / scroll) ---------- */
  .js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
  [data-reveal][data-delay="1"] { transition-delay: .12s; }
  [data-reveal][data-delay="2"] { transition-delay: .24s; }
  [data-reveal][data-delay="3"] { transition-delay: .36s; }
  [data-reveal].is-visible { opacity: 1; transform: none; }
  .section.is-visible .benefit, .section.is-visible .step { animation: rise .7s var(--ease-out) both; }
  .benefit:nth-child(2), .step:nth-child(2) { animation-delay: .1s; }
  .benefit:nth-child(3), .step:nth-child(3) { animation-delay: .2s; }
  .benefit:nth-child(4) { animation-delay: .3s; }
  .js .section:not(.is-visible) .benefit, .js .section:not(.is-visible) .step { opacity: 0; }
  @keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
  
  /* ---------- Responsive ---------- */
  @media (max-width: 1024px) {
    .benefits__grid { grid-template-columns: repeat(2, 1fr); }
    .hero__inner, .about__inner, .insights__inner, .faq__inner, .cta__inner { grid-template-columns: 1fr; }
    .hero__media { order: -1; }
    .insights__media { position: static; }
    .about__media img { aspect-ratio: 16 / 10; }
  }
  @media (max-width: 768px) {
    .nav__list {
      position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; gap: 0; padding: .5rem var(--gutter) 1.2rem;
      background: var(--navy-950); border-bottom: 1px solid rgba(185,200,232,.08);
      display: none;
    }
    .nav__list.is-open { display: flex; }
    .nav__list a { display: block; padding: .9rem 0; font-size: var(--step-0); }
    .nav__toggle { display: flex; }
    .nav .btn { display: none; }
    .nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .steps { grid-template-columns: 1fr; }
    .steps::before { display: none; }
    .hero__stats { gap: 1.5rem; flex-wrap: wrap; }
    .footer__inner { grid-template-columns: 1fr; }
    .footer__nav { grid-template-columns: 1fr 1fr; }
    .footer__bottom { flex-direction: column; gap: .6rem; }
  }
  @media (max-width: 480px) {
    .benefits__grid { grid-template-columns: 1fr; }
    .footer__nav { grid-template-columns: 1fr; }
  }
  
  /* ---------- Reduced motion ---------- */
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .js [data-reveal], .js .section:not(.is-visible) .benefit, .js .section:not(.is-visible) .step { opacity: 1; transform: none; }
  }