:root {
  --primary: #1a9e7e;
  --primary-dark: #157a62;
  --primary-darker: #0f5c49;
  --primary-light: #e8f7f3;
  --primary-mid: #2db896;
  --secondary: #1a1a2e;
  --text: #1a1a1a;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --bg: #ffffff;
  --bg-secondary: #f8fafb;
  --bg-card: #ffffff;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(26,158,126,0.13);
  --font: 'Plus Jakarta Sans', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; font-size: 16px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 0 2rem; }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.5px; display: flex; align-items: center; gap: 6px; }
.logo-icon { width: 32px; height: 32px; background: var(--primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 15px; font-weight: 900; }
.logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-cta { background: var(--primary) !important; color: #fff !important; padding: 8px 20px; border-radius: 8px; font-size: 14px; font-weight: 600; transition: background 0.2s, transform 0.15s; }
.nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; display: block; }
.mobile-menu { display: none; background: #fff; border-top: 1px solid var(--border); padding: 1rem 2rem; }
.mobile-menu a { display: block; padding: 10px 0; font-size: 15px; font-weight: 500; color: var(--text-muted); border-bottom: 1px solid var(--border-light); }
.mobile-menu a:last-child { border: none; }
.mobile-menu.open { display: block; }
.hero { background: linear-gradient(135deg, #1a9e7e 0%, #2db896 50%, #25c9a1 100%); padding: 90px 2rem 80px; text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -60px; right: -60px; width: 320px; height: 320px; border-radius: 50%; background: rgba(255,255,255,0.07); pointer-events: none; }
.hero::after { content: ''; position: absolute; bottom: -80px; left: -40px; width: 250px; height: 250px; border-radius: 50%; background: rgba(255,255,255,0.05); pointer-events: none; }
.hero-badge { display: inline-block; background: rgba(255,255,255,0.2); color: #fff; font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 100px; margin-bottom: 24px; border: 1px solid rgba(255,255,255,0.3); }
.hero h1 { font-size: clamp(30px, 5vw, 54px); font-weight: 800; line-height: 1.15; letter-spacing: -1.5px; color: #fff; max-width: 740px; margin: 0 auto 18px; }
.hero h1 span { opacity: 0.88; }
.hero p { font-size: 17px; color: rgba(255,255,255,0.88); max-width: 500px; margin: 0 auto 36px; line-height: 1.7; }
.hero-stats { display: flex; justify-content: center; gap: 3rem; margin-top: 52px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-num { font-size: 28px; font-weight: 800; color: #fff; }
.stat-label { font-size: 12px; color: rgba(255,255,255,0.72); font-weight: 500; margin-top: 2px; }
.search-wrap { max-width: 500px; margin: 0 auto; position: relative; }
.search-wrap input { width: 100%; padding: 15px 50px 15px 20px; border: 2px solid rgba(255,255,255,0.4); border-radius: var(--radius); font-size: 15px; font-family: var(--font); outline: none; transition: all 0.2s; background: rgba(255,255,255,0.15); color: #fff; }
.search-wrap input::placeholder { color: rgba(255,255,255,0.65); }
.search-wrap input:focus { border-color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.22); }
.search-icon { position: absolute; right: 16px; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,0.7); font-size: 18px; }
.section { padding: 80px 2rem; }
.section-alt { background: var(--bg-secondary); }
.container { max-width: 1200px; margin: 0 auto; }
.section-label { font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--primary); margin-bottom: 10px; }
.section-title { font-size: clamp(24px, 3.5vw, 38px); font-weight: 800; letter-spacing: -1px; line-height: 1.2; margin-bottom: 14px; }
.section-sub { font-size: 16px; color: var(--text-muted); max-width: 500px; line-height: 1.7; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; margin-top: 48px; }
.tool-card { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg); padding: 28px 22px; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; cursor: pointer; position: relative; overflow: hidden; display: block; }
.tool-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.tool-icon { width: 52px; height: 52px; background: var(--primary); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px; color: #fff; }
.tool-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.tool-card p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 18px; }
.tool-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; color: #fff; background: var(--primary); padding: 8px 16px; border-radius: 8px; transition: background 0.2s; }
.tool-link:hover { background: var(--primary-dark); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-top: 48px; }
.feature-card { background: #fff; border: 1.5px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: border-color 0.2s, box-shadow 0.2s; }
.feature-card:hover { border-color: var(--primary); box-shadow: 0 4px 20px rgba(26,158,126,0.1); }
.feature-icon { font-size: 28px; margin-bottom: 14px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.tool-hero { background: linear-gradient(135deg, var(--primary-light) 0%, #fff 60%); padding: 52px 2rem 32px; border-bottom: 1px solid var(--border); }
.breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
.breadcrumb a { color: var(--primary); font-weight: 500; }
.breadcrumb span { margin: 0 6px; color: var(--text-light); }
.tool-hero h1 { font-size: clamp(24px, 4vw, 38px); font-weight: 800; letter-spacing: -1px; margin-bottom: 10px; }
.tool-hero p { font-size: 15px; color: var(--text-muted); max-width: 540px; line-height: 1.7; }
.tool-main { max-width: 900px; margin: 0 auto; padding: 36px 2rem 80px; }
.tool-box { background: #fff; border: 1.5px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.tool-box-header { background: var(--bg-secondary); border-bottom: 1.5px solid var(--border); padding: 13px 20px; display: flex; align-items: center; justify-content: space-between; }
.tool-box-header span { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.tool-body { padding: 22px; }
textarea { width: 100%; border: 1.5px solid var(--border); border-radius: var(--radius); padding: 14px 16px; font-family: 'JetBrains Mono','Fira Code',monospace; font-size: 13px; resize: vertical; outline: none; transition: border 0.2s, box-shadow 0.2s; min-height: 180px; background: var(--bg-secondary); color: var(--text); line-height: 1.7; }
textarea:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(26,158,126,0.1); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; font-family: var(--font); cursor: pointer; border: none; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(26,158,126,0.35); }
.btn-secondary { background: var(--bg-secondary); color: var(--text); border: 1.5px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0; }
.result-box { background: #0f2027; color: #a8d8c8; border-radius: var(--radius); padding: 16px 18px; font-family: 'JetBrains Mono',monospace; font-size: 13px; min-height: 180px; white-space: pre-wrap; word-break: break-all; line-height: 1.8; margin-top: 14px; position: relative; border: 1.5px solid #1e3a30; }
.copy-btn { position: absolute; top: 10px; right: 10px; background: rgba(26,158,126,0.25); border: 1px solid rgba(26,158,126,0.4); color: #a8d8c8; font-size: 12px; padding: 5px 12px; border-radius: 6px; cursor: pointer; font-family: var(--font); font-weight: 600; transition: background 0.2s; }
.copy-btn:hover { background: rgba(26,158,126,0.45); }
.seo-content { margin-top: 48px; }
.seo-content h2 { font-size: 22px; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.5px; }
.seo-content h3 { font-size: 16px; font-weight: 700; margin: 22px 0 8px; color: var(--primary-darker); }
.seo-content p { font-size: 15px; color: var(--text-muted); line-height: 1.8; margin-bottom: 12px; }
.seo-content ul, .seo-content ol { margin: 10px 0 14px 20px; }
.seo-content li { font-size: 15px; color: var(--text-muted); line-height: 1.8; margin-bottom: 4px; }
.faq-item { border: 1.5px solid var(--border); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.faq-q { padding: 15px 20px; font-size: 14px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: var(--bg-secondary); transition: background 0.15s; }
.faq-q:hover { background: var(--primary-light); color: var(--primary-dark); }
.faq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s; font-size: 14px; color: var(--text-muted); line-height: 1.75; }
.faq-a.open { max-height: 250px; padding: 14px 20px; }
.faq-arrow { transition: transform 0.3s; font-size: 11px; color: var(--primary); }
.faq-open .faq-arrow { transform: rotate(180deg); }
.page-hero { padding: 60px 2rem 40px; background: linear-gradient(135deg, var(--primary-light) 0%, #fff 60%); border-bottom: 1px solid var(--border); text-align: center; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: -1px; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--text-muted); max-width: 520px; margin: 0 auto; line-height: 1.7; }
.page-content { max-width: 800px; margin: 0 auto; padding: 56px 2rem 100px; }
.page-content h2 { font-size: 21px; font-weight: 700; margin: 36px 0 12px; letter-spacing: -0.4px; border-left: 3px solid var(--primary); padding-left: 14px; }
.page-content h3 { font-size: 16px; font-weight: 700; margin: 20px 0 8px; color: var(--primary-darker); }
.page-content p { font-size: 15px; color: var(--text-muted); line-height: 1.85; margin-bottom: 14px; }
.page-content ul, .page-content ol { margin: 10px 0 16px 22px; }
.page-content li { font-size: 15px; color: var(--text-muted); line-height: 1.8; margin-bottom: 6px; }
.page-content a { color: var(--primary); font-weight: 500; }
.page-content code { font-family: 'JetBrains Mono',monospace; background: var(--primary-light); color: var(--primary-darker); padding: 2px 7px; border-radius: 5px; font-size: 13px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text); }
.form-group input, .form-group textarea, .form-group select { padding: 12px 16px; border: 1.5px solid var(--border); border-radius: var(--radius); font-family: var(--font); font-size: 14px; outline: none; transition: border 0.2s, box-shadow 0.2s; background: var(--bg); color: var(--text); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,158,126,0.1); }
.form-group textarea { min-height: 120px; resize: vertical; }
.contact-item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-item-icon { width: 44px; height: 44px; background: var(--primary-light); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.contact-item-text strong { display: block; font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.contact-item-text span { font-size: 13px; color: var(--text-muted); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img-box { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%); border-radius: var(--radius-lg); aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-size: 80px; max-width: 380px; }
footer { background: #0d1f1a; color: #e2e8f0; padding: 60px 2rem 28px; border-top: 3px solid var(--primary); }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; }
.footer-brand p { font-size: 14px; color: #7fa99a; margin-top: 12px; line-height: 1.75; max-width: 240px; }
.footer-col h4 { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: #7fa99a; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 14px; color: #b2d4cc; margin-bottom: 9px; transition: color 0.2s; }
.footer-col a:hover { color: #2db896; }
.footer-bottom { border-top: 1px solid #1e3a30; padding-top: 22px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; color: #4d7a6a; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 13px; color: #4d7a6a; transition: color 0.2s; }
.footer-bottom-links a:hover { color: #2db896; }
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--primary); color: #fff; padding: 12px 20px; border-radius: var(--radius); font-size: 14px; font-weight: 600; z-index: 9999; transform: translateY(80px); opacity: 0; transition: all 0.3s; box-shadow: 0 4px 20px rgba(26,158,126,0.4); }
.toast.show { transform: translateY(0); opacity: 1; }
@media (max-width: 768px) { .nav-links { display: none; } .hamburger { display: flex; } .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } .contact-grid { grid-template-columns: 1fr; } .about-grid { grid-template-columns: 1fr; } .hero { padding: 60px 1.5rem 56px; } .section { padding: 56px 1.5rem; } .hero-stats { gap: 2rem; } .tool-main { padding: 28px 1rem 60px; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } .tools-grid { grid-template-columns: 1fr; } }