:root {
    --primary: #176b4d;
    --primary-dark: #0d4d36;
    --primary-light: #e8f5ef;
    --text: #17221d;
    --muted: #65736c;
    --background: #f7f9f8;
    --white: #ffffff;
    --border: #dfe7e2;
    --container: 1180px;
    --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: Inter, Arial, sans-serif; color: var(--text); background: var(--background); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
button, input, select { font: inherit; }
.container { width: min(92%, var(--container)); margin: 0 auto; }

.header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--border); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 1.05rem; }
.logo-mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 8px; color: var(--white); background: var(--primary); font-weight: 800; }
.logo-accent { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 24px; color: #4e5b55; font-size: .84rem; font-weight: 600; }
.nav-links a:not(.nav-button):hover { color: var(--primary); }
.nav-button { padding: 9px 15px; color: var(--white); background: var(--primary); border: 1px solid var(--primary); border-radius: 8px; }
.nav-button:hover { background: var(--primary-dark); }
.menu-toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--border); border-radius: 8px; background: var(--white); }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--text); }

.hero { padding: 92px 0 90px; background: var(--white); border-bottom: 1px solid var(--border); }
.hero-grid { display: grid; grid-template-columns: 1fr .9fr; align-items: center; gap: 70px; }
.eyebrow, .section-label { color: var(--primary); font-size: .7rem; font-weight: 800; letter-spacing: .13em; }
.hero h1 { max-width: 690px; margin-top: 15px; font-size: clamp(2.6rem, 5.5vw, 4.6rem); line-height: 1.02; letter-spacing: -2.8px; }
.hero-text { max-width: 610px; margin-top: 22px; color: var(--muted); font-size: 1rem; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 17px; border: 1px solid transparent; border-radius: 8px; font-size: .8rem; font-weight: 700; }
.btn-primary { color: var(--white); background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { color: var(--text); background: var(--white); border-color: #cfdad4; }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-light { color: var(--primary); background: var(--white); border-color: var(--white); }
.hero-note { margin-top: 16px; color: #78847e; font-size: .75rem; }

.hero-preview { width: 100%; }
.preview-window { border: 1px solid #ccd8d1; border-radius: 12px; background: var(--white); box-shadow: 0 18px 50px rgba(17, 43, 32, .09); overflow: hidden; }
.preview-top { min-height: 48px; padding: 0 16px; display: grid; grid-template-columns: 70px 1fr 70px; align-items: center; border-bottom: 1px solid var(--border); background: #fbfcfb; }
.window-dots { display: flex; gap: 5px; }
.window-dots span { width: 6px; height: 6px; border-radius: 50%; background: #b8c4bd; }
.preview-title { text-align: center; font-size: .72rem; font-weight: 700; }
.preview-menu { text-align: right; color: #738078; font-size: .62rem; }
.preview-body { padding: 22px; }
.preview-welcome { display: flex; justify-content: space-between; align-items: center; }
.preview-welcome small, .preview-item small { display: block; color: #78857f; font-size: .62rem; }
.preview-welcome h3 { margin-top: 2px; font-size: 1rem; }
.mini-profile { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--primary-light); color: var(--primary); font-size: .65rem; font-weight: 800; }
.preview-list { display: grid; gap: 8px; margin-top: 20px; }
.preview-item { display: grid; grid-template-columns: 34px 1fr auto; gap: 10px; align-items: center; padding: 11px; border: 1px solid var(--border); border-radius: 8px; }
.preview-key { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 7px; background: var(--primary-light); color: var(--primary); font-size: .6rem; font-weight: 800; }
.preview-item strong { font-size: .72rem; }
.preview-item > span:last-child { color: var(--primary); font-size: .62rem; font-weight: 700; }
.preview-status { margin-top: 12px; padding: 12px; border-left: 3px solid var(--primary); background: #f5f8f6; }
.preview-status span { display: block; color: #78857f; font-size: .62rem; }
.preview-status strong { display: block; margin-top: 3px; font-size: .7rem; }

.section { padding: 88px 0; }
.features-section { background: var(--background); }
.section-heading { max-width: 680px; margin: 0 auto 42px; text-align: center; }
.left-heading { margin-left: 0; text-align: left; }
.section-heading h2 { margin-top: 10px; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.15; letter-spacing: -1.2px; }
.section-heading p { margin-top: 13px; color: var(--muted); font-size: .9rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature-card { padding: 25px; border: 1px solid var(--border); border-radius: 10px; background: var(--white); }
.feature-icon { width: 40px; height: 32px; display: grid; place-items: center; border-radius: 6px; color: var(--primary); background: var(--primary-light); font-size: .62rem; font-weight: 800; letter-spacing: .05em; }
.feature-card h3 { margin-top: 18px; font-size: .98rem; }
.feature-card p { margin-top: 8px; color: var(--muted); font-size: .8rem; }

.how-section { background: #eef4f0; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; }
.step-number { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid #cddbd3; border-radius: 8px; color: var(--primary); background: var(--white); font-size: .7rem; font-weight: 800; }
.step h3 { margin-top: 18px; font-size: .98rem; }
.step p { max-width: 300px; margin-top: 8px; color: var(--muted); font-size: .8rem; }

.about-section { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 55px; align-items: start; }
.about-card { display: flex; gap: 20px; }
.about-icon { flex: 0 0 48px; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 8px; color: var(--white); background: var(--primary); font-weight: 800; }
.about-card h2 { margin-top: 8px; font-size: 2rem; line-height: 1.18; letter-spacing: -1px; }
.about-card p { max-width: 620px; margin-top: 13px; color: var(--muted); font-size: .88rem; }
.about-points { display: grid; gap: 9px; }
.about-points div { padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; background: #fbfcfb; font-size: .76rem; font-weight: 600; }
.about-points span { margin-right: 9px; color: var(--primary); font-size: .66rem; }

.cta-section { padding: 70px 0; background: var(--white); }
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 48px; border-radius: 12px; color: var(--white); background: var(--primary); }
.section-label.light { color: #c8e5d6; }
.cta-box h2 { max-width: 650px; margin-top: 9px; font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.15; }
.cta-box p { max-width: 620px; margin-top: 10px; color: #d8ebe1; font-size: .84rem; }

.footer { padding: 44px 0 20px; background: #12261e; color: var(--white); }
.footer-content { display: flex; justify-content: space-between; gap: 35px; }
.footer .logo { color: var(--white); }
.footer .logo-mark { color: var(--primary); background: var(--white); }
.footer .logo-accent { color: #8fc9ad; }
.footer-content p { margin-top: 10px; color: #a7b7af; font-size: .74rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; color: #c4d0ca; font-size: .72rem; }
.footer-links a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 34px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.1); color: #8d9e95; font-size: .66rem; }
.footer-bottom strong { color: #d8e3dd; font-weight: 600; }

@media (max-width: 950px) {
    .hero-grid { grid-template-columns: 1fr; gap: 50px; }
    .hero-content { max-width: 760px; }
    .hero-preview { max-width: 650px; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .menu-toggle { display: block; }
    .nav-links { position: absolute; top: 72px; left: 4%; right: 4%; display: none; flex-direction: column; align-items: stretch; gap: 2px; padding: 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--white); box-shadow: 0 14px 28px rgba(0,0,0,.08); }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 10px; }
    .nav-button { text-align: center; }
    .hero { padding: 65px 0 70px; }
    .hero h1 { font-size: clamp(2.4rem, 12vw, 3.4rem); }
    .feature-grid, .steps { grid-template-columns: 1fr; }
    .preview-top { grid-template-columns: 55px 1fr 55px; }
    .cta-box { align-items: flex-start; flex-direction: column; padding: 34px 28px; }
    .footer-content, .footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}