/* how-to-use.css - page-specific styles only */

/* HERO */
  .hu-hero {
    padding-top: 160px;
    padding-bottom: 60px;
  }

.hu-hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
  }

.hu-hero h1.heading {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 22px;
    color: var(--ink);
  }

.hu-hero h1 .accent { color: var(--teal); }

.hu-hero p {
    font-size: 17px;
    color: var(--ink-soft);
    margin-bottom: 26px;
    max-width: 540px;
  }

.hu-hero-stats {
    display: flex; gap: 36px;
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
  }

.hu-stat-num {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--teal);
    line-height: 1;
    margin-bottom: 4px;
  }

.hu-stat-label {
    font-size: 12px;
    color: var(--ink-mute);
    letter-spacing: 0.04em;
  }

.hu-hero-img {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
  }

.hu-hero-img img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    background: var(--bg-soft);
  }

.device-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

.device-card {
    position: relative;
    padding: 28px 22px;
    background: var(--bg-soft);
    border-radius: 16px;
    text-align: left;
    cursor: pointer;
    overflow: hidden;
    transition: all .35s var(--ease);
    display: block;
  }

.device-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    background: var(--lime);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .4s var(--ease);
  }

.device-card:hover {
    transform: translateY(-5px);
    background: var(--white);
    box-shadow: var(--shadow-soft);
    color: var(--ink);
  }

.device-card:hover::before { transform: scaleY(1); }

.device-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: var(--lime);
    color: var(--black);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    margin-bottom: 18px;
  }

.device-card h3 {
    font-size: 18px;
    margin-bottom: 6px;
    color: var(--ink);
  }

.device-card p {
    font-size: 13px;
    color: var(--ink-mute);
    margin-bottom: 14px;
    line-height: 1.55;
  }

.device-card .device-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--teal);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

.device-card .device-link i { font-size: 11px; transition: transform .3s var(--ease); }

.device-card:hover .device-link i { transform: translateX(4px); }

/* GUIDE BLOCKS */
  .guides {
    background: var(--bg-soft);
    border-radius: 0;
  }

.guide-block {
    background: var(--white);
    border-radius: 18px;
    margin-bottom: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    scroll-margin-top: 110px;
  }

.guide-head {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 22px 28px;
    cursor: pointer;
    transition: background .25s var(--ease);
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
  }

.guide-head:hover { background: rgba(191, 214, 63, 0.08); }

.guide-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--lime);
    color: var(--black);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
  }

.guide-meta { flex: 1; min-width: 0; }

.guide-meta h3 {
    font-size: 19px;
    color: var(--ink);
    margin-bottom: 2px;
  }

.guide-meta .guide-sub {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }

.guide-toggle {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--bg-soft);
    color: var(--teal);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    transition: all .3s var(--ease);
  }

.guide-block.open .guide-toggle {
    background: var(--teal);
    color: var(--white);
    transform: rotate(45deg);
  }

.guide-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height .5s var(--ease), padding .5s var(--ease);
    padding: 0 28px;
  }

.guide-block.open .guide-body {
    max-height: 2000px;
    padding: 4px 28px 28px;
  }

.guide-body .intro {
    color: var(--ink-soft);
    font-size: 15px;
    margin-bottom: 22px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--border);
  }

.guide-body .intro a {
    color: var(--teal);
    text-decoration: underline;
    text-underline-offset: 2px;
  }

.steps { counter-reset: step; }

.steps li {
    position: relative;
    padding: 12px 0 12px 56px;
    font-size: 15px;
    color: var(--ink-soft);
    counter-increment: step;
    line-height: 1.65;
  }

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 0; top: 12px;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--lime);
    color: var(--black);
    display: flex; align-items: center; justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 700;
  }

.steps li strong {
    color: var(--ink);
    font-weight: 700;
  }

.steps li code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    background: var(--bg-soft);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--teal);
    word-break: break-all;
  }

.steps li a {
    color: var(--teal);
    text-decoration: underline;
    text-underline-offset: 2px;
    word-break: break-all;
  }

/* HELP CTA */
  .help-card {
    max-width: 920px;
    margin: 0 auto;
    padding: 44px 40px;
    background: linear-gradient(160deg, rgba(191, 214, 63, 0.18), rgba(5, 68, 98, 0.08));
    border-radius: 22px;
    text-align: center;
    box-shadow: var(--shadow-soft);
  }

.help-card .eyebrow { margin-bottom: 14px; }

.help-card h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    margin-bottom: 14px;
  }

.help-card p {
    color: var(--ink-soft);
    margin-bottom: 28px;
    font-size: 17px;
  }

.help-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
  }

/* RESPONSIVE */
  @media (max-width: 1024px) {
    .hu-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .device-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  }

@media (max-width: 768px) {
    section { padding: 80px 0; }
    .hu-hero { padding-top: 130px; }
    .nav-menu { display: none; }
    .burger { display: flex; }
    .hu-hero h1.heading { font-size: clamp(2.2rem, 9vw, 3.2rem); }
    .device-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .device-card { padding: 22px 18px; }
    .guide-head { padding: 18px 20px; gap: 14px; }
    .guide-body { padding: 0 20px; }
    .guide-block.open .guide-body { padding: 4px 20px 22px; }
    .steps li { padding-left: 50px; font-size: 14px; }
    .steps li::before { width: 32px; height: 32px; font-size: 12px; }
    .footer-grid { grid-template-columns: 1fr; }
    .help-card { padding: 32px 22px; }
    .wa-float { bottom: 18px; right: 18px; width: 54px; height: 54px; font-size: 26px; }
  }