:root {
    --orange: #fb9609;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --text: #242424;
    --muted: #6c6c6c;
    --line: #e8e8e8;
    --shadow: 0 18px 40px rgba(17, 17, 17, 0.08);
    --radius: 18px;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--light);
    line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(17, 17, 17, 0.96);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(0,0,0,0.16);
}
.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.header-inner {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: 0.5px;
    font-size: 1.2rem;
}
.logo img {
    width: 42px;
    height: 42px;
    object-fit: contain;
    border-radius: 12px;
    background: var(--white);
}
nav.desktop-nav {
    display: none;
    gap: 8px;
    align-items: center;
}
nav.desktop-nav a,
.mobile-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    color: rgba(255,255,255,0.86);
    transition: 0.2s ease;
}
nav.desktop-nav a:hover,
nav.desktop-nav a.active,
.mobile-nav a:hover {
    background: var(--orange);
    color: var(--black);
}
.mobile-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 8px 16px 14px;
    font-size: 0.9rem;
    text-align: center;
}
.hero,
.banner {
    background: linear-gradient(135deg, var(--black), var(--dark));
    color: var(--white);
    padding: 54px 0 42px;
}
.hero-grid,
.banner-grid {
    display: grid;
    gap: 28px;
    align-items: center;
}
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(251, 150, 9, 0.13);
    color: var(--orange);
    border: 1px solid rgba(251, 150, 9, 0.35);
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.9rem;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 14px; color: inherit; }
h1 { font-size: clamp(2rem, 7vw, 4rem); letter-spacing: -1px; }
h2 { font-size: clamp(1.55rem, 4vw, 2.25rem); }
h3 { font-size: 1.18rem; }
p { margin: 0 0 14px; }
.hero p, .banner p { color: rgba(255,255,255,0.78); font-size: 1.05rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.tag {
    display: inline-flex;
    padding: 9px 12px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 999px;
    color: rgba(255,255,255,0.9);
    font-size: 0.92rem;
}
.app-frame {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 28px;
    padding: 18px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.28);
}
section { padding: 48px 0; }
.section-head { margin-bottom: 24px; }
.section-head p { color: var(--muted); max-width: 760px; }
.card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}
.card h2, .card h3 { color: var(--black); }
.card p, li { color: #4f4f4f; }
.grid { display: grid; gap: 18px; }
.grid.two, .grid.three, .grid.four { grid-template-columns: 1fr; }
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 48px;
    padding: 12px 20px;
    border-radius: 999px;
    background: var(--orange);
    color: var(--black);
    font-weight: 800;
    box-shadow: 0 12px 24px rgba(251,150,9,0.25);
    border: 0;
    cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.notice {
    background: #fff7ec;
    border: 1px solid rgba(251, 150, 9, 0.32);
    border-left: 6px solid var(--orange);
    border-radius: var(--radius);
    padding: 18px;
    color: #4b3a20;
}
.notice strong { color: var(--black); }
.faq { display: grid; gap: 14px; }
.faq-item {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}
.faq-item h3 { color: var(--black); }
ul.clean { padding-left: 20px; margin: 0; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step {
    position: relative;
    padding-left: 58px;
}
.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 3px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--orange);
    color: var(--black);
    display: grid;
    place-items: center;
    font-weight: 900;
}
.link-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.link-row a { color: var(--black); font-weight: 700; border-bottom: 2px solid var(--orange); }
.footer {
    background: var(--black);
    color: var(--white);
    padding: 44px 0 0;
}
.footer-grid { display: grid; gap: 24px; }
.footer h2, .footer h3 { color: var(--white); }
.footer p, .footer a { color: rgba(255,255,255,0.72); }
.footer a { display: block; margin-bottom: 8px; }
.footer-bottom {
    margin-top: 30px;
    padding: 18px;
    text-align: center;
    background: #070707;
    color: rgba(255,255,255,0.62);
    font-size: 0.9rem;
}
@media (min-width: 768px) {
    .mobile-nav { display: none; }
    nav.desktop-nav { display: flex; }
    .hero, .banner { padding: 76px 0 66px; }
    .hero-grid, .banner-grid { grid-template-columns: 1.05fr 0.95fr; }
    .grid.two { grid-template-columns: repeat(2, 1fr); }
    .grid.three { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr 0.8fr 1fr; }
}
@media (min-width: 1024px) {
    section { padding: 64px 0; }
    .grid.four { grid-template-columns: repeat(4, 1fr); }
    .card { padding: 26px; }
}