/* === GLOBAL STYLES & VARIABLES === */
:root {
    /* --- Palette --- */
    --primary-dark-blue: #1F2937;
    --primary-medium-blue: #374151;
    --accent-green: #006A4E;
    --accent-green-dark: #00563f;
    --process-box-gradient-start: #66BDAA;
    --process-box-gradient-end: #33A085;
    --process-box-icon-bg: #00563f;
    --neutral-light: #F9FAFB;
    --neutral-medium: #6B7280;
    --neutral-dark: #374151;
    --text-light: #F9FAFB;
    --text-dark: #111827;
    --border-color: #D1D5DB;
    --footer-border-color: #E5E7EB;
    --hero-overlay-color: rgba(31, 41, 55, 0.5);
    --line-color: rgba(255, 255, 255, 0.7);
    --hero-highlight-green: #34D399;
    --pain-point-overlay-color: rgba(249, 250, 251, 0.88);
    /* ADDED: Silver color for border */
    --silver-border: #C0C0C0;


    /* --- Fonts & Structure --- */
    --font-primary: 'Poppins', sans-serif;
    --container-width: 1140px;
    --border-radius: 8px;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.07);
    --box-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* === Base Styles === */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-primary); color: var(--neutral-medium); line-height: 1.7; background-color: var(--neutral-light); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-green); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--accent-green-dark); }
h1, h2, h3 { line-height: 1.3; font-weight: 700; margin-bottom: 0.6em; color: var(--neutral-dark); }
h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); margin-bottom: 0.5em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 1em; }
h3 { font-size: 1.25rem; margin-bottom: 0.5em; color: var(--primary-dark-blue) }
p { margin-bottom: 1.2em; }
.subtitle { font-size: 1.1rem; color: var(--neutral-medium); max-width: 650px; margin-left: auto; margin-right: auto; margin-bottom: 1.5em; }
.text-center { text-align: center; }
.section-padding { padding: 80px 0; }
strong { font-weight: 600; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; }

/* === Buttons === */
.button { display: inline-block; padding: 16px 40px; border-radius: var(--border-radius); font-weight: 600; text-align: center; cursor: pointer; transition: all 0.3s ease; border: none; font-size: 1rem; letter-spacing: 0.5px; }
.button-primary { background-color: var(--accent-green); color: var(--text-light); box-shadow: 0 4px 14px rgba(0, 106, 78, 0.3); }
.button-primary:hover { background-color: var(--accent-green-dark); color: var(--text-light); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 106, 78, 0.4); }
.button-large { padding: 15px 35px; font-size: 1.1rem; }
.button-small { padding: 10px 22px; font-size: 0.9rem; box-shadow: none; }
.button-small:hover { box-shadow: 0 2px 8px rgba(0, 106, 78, 0.3); }

/* === Header === */
.site-header { background-color: var(--text-light); color: var(--primary-dark-blue); padding: 15px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); }
.header-container { display: flex; justify-content: space-between; align-items: center; }
.logo { line-height: 1; display: inline-block; }
.logo img { height: 45px; width: auto; display: block; vertical-align: middle; }
.main-nav .nav-links { list-style: none; display: flex; align-items: center; margin: 0; padding: 0; }
.main-nav li { margin-left: 30px; }
.main-nav a { color: var(--primary-dark-blue); font-weight: 600; padding: 5px 0; position: relative; font-size: 0.95rem;}
.main-nav a.button-primary { color: var(--text-light) !important; }
.main-nav a:not(.button)::after { content: ''; position: absolute; width: 0; height: 2px; bottom: -5px; left: 50%; transform: translateX(-50%); background-color: var(--accent-green); transition: width 0.3s ease; }
.main-nav a:not(.button):hover::after { width: 100%; }
.main-nav a:hover, .main-nav a:focus { color: var(--accent-green); }
.main-nav .button { margin-left: 20px; }
.nav-toggle { display: none; background: none; border: none; color: var(--primary-dark-blue); font-size: 1.5rem; cursor: pointer; }

/* === Hero Section === */
.hero-section { background-color: var(--accent-green); color: var(--text-light); padding: 100px 0; overflow: hidden; display: flex; align-items: center; min-height: 60vh; }
.hero-content { display: flex; align-items: center; gap: 50px; text-align: left; }
.hero-text-column { flex: 1 1 45%; max-width: 45%; padding-right: 30px; }
.hero-image-column { flex: 1 1 50%; max-width: 50%; align-self: stretch; }
.hero-image-column img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--border-radius); box-shadow: var(--box-shadow-lg); }
.hero-text-column h1 { color: var(--text-light); font-size: clamp(2.2rem, 4vw, 3.0rem); }
.hero-text-column .highlight-green { color: var(--hero-highlight-green); }
.hero-text-column .subtitle { color: var(--neutral-light); opacity: 0.95; margin: 0 0 2.5em 0; max-width: 100%; text-align: left; }
.button-hero { background-color: var(--text-light); color: var(--accent-green-dark); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1); }
.button-hero:hover { background-color: #f0f0f0; color: var(--accent-green-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15); }

/* === Pain Points Section === */
.pain-points-section { position: relative; background-image: linear-gradient(var(--pain-point-overlay-color), var(--pain-point-overlay-color)), url('images/map with schools.jpg'); background-size: cover; background-position: center center; background-repeat: no-repeat; background-color: var(--neutral-light); }
.pain-points-section h2 { color: var(--primary-dark-blue); position: relative; z-index: 2; }
.pain-points-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 30px; margin-top: 40px; position: relative; z-index: 2; }
.pain-point { text-align: center; padding: 25px; background-color: #fff; border-radius: var(--border-radius); border: 1px solid var(--border-color); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.pain-point:hover { transform: translateY(-5px); box-shadow: var(--box-shadow); }
.pain-point .icon-color { color: var(--accent-green); margin-bottom: 15px; }
.pain-point h3 { margin-top: 0.5em; font-size: 1.15rem; color: var(--primary-dark-blue);}
.pain-point p { font-size: 0.95rem; color: var(--neutral-medium); margin-bottom: 0; }

/* === Solution / Process Section === */
.solution-process-section { background-color: var(--neutral-light); }
.solution-process-section h2 { color: var(--primary-dark-blue); }
.process-steps-grid { display: grid; grid-template-columns: 1fr; gap: 30px; margin-top: 50px; }
.process-step { display: flex; align-items: flex-start; gap: 20px; background: linear-gradient(145deg, var(--process-box-gradient-start) 0%, var(--process-box-gradient-end) 100%); padding: 30px; border-radius: var(--border-radius); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.7), 0 5px 15px rgba(72, 184, 159, 0.2); color: var(--text-light); position: relative; overflow: hidden; }
.step-icon-container { flex-shrink: 0; width: 50px; height: 50px; background-color: var(--process-box-icon-bg); color: var(--text-light); border-radius: 50%; display: flex; justify-content: center; align-items: center; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); position: relative; z-index: 2; }
.step-content { position: relative; z-index: 2; }
.process-step h3 { font-size: 1.3rem; margin-top: 0; color: var(--text-light); font-weight: 700; }
.process-step h3 span { margin-right: 8px; font-weight: 700; }
.process-step p { font-size: 1rem; margin-bottom: 0; color: var(--text-light); opacity: 0.95; }
.process-step p strong { color: var(--text-light); font-weight: 700; }
.process-step::before, .process-step::after { content: ''; position: absolute; width: 35px; height: 35px; border-style: solid; border-color: var(--line-color); border-width: 0; z-index: 1; pointer-events: none; }
.process-step::before { top: 10px; left: 10px; border-top-width: 2px; border-left-width: 2px; border-top-left-radius: 6px; }
.process-step::after { bottom: 10px; right: 10px; border-bottom-width: 2px; border-right-width: 2px; border-bottom-right-radius: 6px; }

/* === Quick FAQ Section === */
.quick-faq-section { background-color: var(--neutral-light); }
.quick-faq-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-top: 2rem; }
.quick-faq-item { text-align: center; padding: 2rem; background: white; border-radius: var(--border-radius); box-shadow: var(--box-shadow); transition: transform 0.3s ease; }
.quick-faq-item:hover { transform: translateY(-3px); }
.quick-faq-item .icon-color { font-size: 2.5rem; color: var(--accent-green); margin-bottom: 1rem; }
.quick-faq-item h3 { color: var(--primary-dark-blue); margin-bottom: 1rem; font-size: 1.2rem; }
.quick-faq-item p { color: var(--neutral-medium); margin-bottom: 0; font-size: 0.95rem; }

/* === Trust Building Section === */
.trust-building-section { background-color: var(--neutral-light); }
.expertise-statement { max-width: 800px; margin: -20px auto 50px auto; font-size: 1.1rem; line-height: 1.6; padding: 20px; background-color: #fff; border-radius: var(--border-radius); border: 1px solid var(--border-color); }
.expertise-statement strong { color: var(--primary-dark-blue); }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }

/* UPDATED: Testimonial Card Borders */
.testimonial-card {
    background-color: #fff;
    padding: 30px;
    border-radius: var(--border-radius);
    position: relative;
    box-shadow: var(--box-shadow);
    /* Removed border: 1px solid var(--border-color); */
    /* Added double border */
    border-width: 4px; /* Adjust width as needed */
    border-style: double;
    border-color: var(--silver-border);
}

.testimonial-card .quote-icon { position: absolute; top: 15px; left: 20px; font-size: 3rem; color: var(--accent-green); opacity: 0.2; line-height: 1; }
.testimonial-card blockquote { font-size: 1.05rem; font-style: italic; color: var(--neutral-dark); margin-bottom: 1em; padding-top: 10px; }
.testimonial-card blockquote[lang="zh-CN"] { font-style: normal; }
.testimonial-card cite { font-style: normal; font-weight: 600; color: var(--neutral-medium); font-size: 0.9rem; }

/* === Final CTA Section === */
.final-cta-section { background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%); color: var(--text-light); }
.cta-header { text-align: center; margin-bottom: 40px; }
.final-cta-section h2 { color: var(--text-light); }
.final-cta-section .subtitle { color: var(--neutral-light); opacity: 0.9; max-width: 650px; margin-left: auto; margin-right: auto; }
.cta-container-flex { display: flex; align-items: flex-start; gap: 40px; margin-top: 40px; }
.cta-image-column { flex: 1 1 45%; max-width: 45%; }
.cta-image-column img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--border-radius); box-shadow: var(--box-shadow-lg); }
.cta-form-column { flex: 1 1 50%; max-width: 50%; }
.cta-form { max-width: 100%; margin: 0; text-align: left; }
.form-group { margin-bottom: 15px; }
.cta-form input[type="text"], .cta-form input[type="email"], .cta-form input[type="tel"], .cta-form textarea { width: 100%; padding: 12px 15px; border-radius: var(--border-radius); border: 1px solid rgba(255, 255, 255, 0.3); background-color: rgba(255, 255, 255, 0.1); color: var(--text-light); font-family: var(--font-primary); font-size: 1rem; transition: border-color 0.3s ease, background-color 0.3s ease; }
.cta-form input::placeholder, .cta-form textarea::placeholder { color: rgba(249, 250, 251, 0.7); opacity: 1; }
.cta-form input:focus, .cta-form textarea:focus { outline: none; border-color: var(--text-light); background-color: rgba(255, 255, 255, 0.15); }
.cta-form textarea { resize: vertical; min-height: 100px; }
.cta-form button[type="submit"] { display: block; width: 100%; background-color: var(--text-light); color: var(--accent-green-dark); padding: 15px 30px; font-size: 1.1rem; font-weight: 700; margin-top: 10px; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1); border: none; border-radius: var(--border-radius); cursor: pointer; transition: all 0.3s ease; }
.cta-form button[type="submit"]:hover { background-color: #f0f0f0; color: var(--accent-green-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15); }

/* === Footer === */
.site-footer-main { background-color: var(--neutral-light); color: var(--neutral-dark); padding-top: 60px; font-size: 0.9rem; border-top: 1px solid var(--footer-border-color); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-logo-area { text-align: center; }
.footer-logo { display: inline-block; margin-bottom: 10px; }
.footer-logo img { height: 50px; width: auto; display: block; margin-left: auto; margin-right: auto; }
.footer-logo-area p { color: var(--neutral-medium); margin-bottom: 0; line-height: 1.5;}
.footer-links h4, .footer-contact h4 { color: var(--primary-dark-blue); font-size: 1.1rem; margin-bottom: 18px; font-weight: 600; }
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--neutral-dark); }
.footer-links a:hover { color: var(--accent-green); text-decoration: underline; }
.footer-contact p { margin-bottom: 12px; display: flex; align-items: center; gap: 10px; color: var(--neutral-dark); }
.footer-contact .icon-footer { color: var(--accent-green); width: 1em; text-align: center; }
.social-icons-footer { margin-top: 15px; }
.social-icons-footer a { color: var(--neutral-medium); font-size: 1.2rem; margin-right: 15px; }
.social-icons-footer a:hover { color: var(--accent-green); }
.footer-bottom { padding: 25px 0; text-align: center; font-size: 0.85rem; border-top: 1px solid var(--footer-border-color); color: var(--neutral-medium); }

/* === Floating WhatsApp Button === */
.whatsapp-float { position: fixed; width: 60px; height: 60px; bottom: 30px; right: 30px; background-color: #25D366; color: #FFF; border-radius: 50%; text-align: center; font-size: 1.8rem; box-shadow: 2px 2px 10px rgba(0,0,0,0.3); z-index: 100; display: flex; justify-content: center; align-items: center; transition: transform 0.3s ease; }
.whatsapp-float:hover { transform: scale(1.1); color: #fff; }

/* === RESPONSIVENESS === */
@media (min-width: 768px) { .process-steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; } }
@media (max-width: 992px) {
    :root { --container-width: 960px; }
    h1 { font-size: clamp(2.0rem, 4.5vw, 2.8rem); }
    h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
    .hero-content { flex-direction: column; text-align: center; gap: 30px; padding: 60px 20px; }
    .hero-text-column, .hero-image-column { max-width: 100%; flex-basis: auto; padding-right: 0; }
    .hero-image-column { order: -1; max-width: 70%; margin: 0 auto; }
    .hero-text-column { text-align: center; }
    .hero-text-column .subtitle { margin-left: auto; margin-right: auto; }
    .process-steps-grid { gap: 30px; }
    .cta-container-flex { flex-direction: column; gap: 30px; }
    .cta-image-column, .cta-form-column { flex-basis: auto; max-width: 100%; }
    .cta-form-column { text-align: center; }
    .cta-form { max-width: 600px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 768px) {
    .section-padding { padding: 60px 0; }
    .header-container { position: relative; }
    .nav-toggle { display: block; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); z-index: 1001; }
    .main-nav .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background-color: var(--text-light); padding: 20px 0; border-top: 1px solid var(--border-color); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05); z-index: 1000; }
    .main-nav .nav-links.active { display: flex; }
    .main-nav li { margin: 10px 0; text-align: center; margin-left: 0; }
    .main-nav .button { margin-left: 0; margin-top: 15px; }
    .hero-section { min-height: auto; padding: 60px 0; }
    .hero-image-column { max-width: 80%; }
    .process-steps-grid { grid-template-columns: 1fr; gap: 30px;}
    .pain-points-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-logo-area { text-align: center; }
    .footer-logo img { margin-left: auto; margin-right: auto; }
    .footer-contact p { justify-content: center; }
    .whatsapp-float { width: 50px; height: 50px; font-size: 1.5rem; bottom: 20px; right: 20px; }
    .cta-container-flex { flex-direction: column; gap: 30px; }
    .cta-image-column, .cta-form-column { max-width: 100%; flex-basis: auto; }
    .cta-form-column { text-align: center; }
    .cta-form { max-width: 100%; margin: 20px 0 0 0; }
}