/* ===== iwarm Shared Styles — Light & Warm (参考设计稿风格) ===== */

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* Anchor offset for sticky nav (72px nav + 8px buffer) */
[id] { scroll-margin-top: 80px; }

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(156,200,41,0.25), 0 2px 8px rgba(156,200,41,0.15);
}

body {
  font-family: 'Noto Sans SC', 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #2d2d2d;
  background: #ffffff;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.3s; }
ul { list-style: none; }

/* ===== CSS Variables ===== */
:root {
  --primary: #9CC829;
  --primary-light: #B3E044;
  --primary-dark: #7EA820;
  --primary-bg: #F5FAE8;
  --accent: #F4A623;
  --accent-warm: #F4A623;
  --accent-cool: #4A90D9;
  --gradient-warm: linear-gradient(135deg, var(--primary), var(--accent-warm));
  --bg-white: #ffffff;
  --bg-cream: #FAF7F4;
  --bg-warm: #FFF8F3;
  --bg-light: #f5f5f5;
  --text-dark: #1a1a1a;
  --text-mid: #666666;
  --text-light: #999999;
  --border: #e8e8e8;
  --border-light: #f0f0f0;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
  --max-width: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Container ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== Navigation ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  height: 72px;
}

/* Logo */
.nav-logo {
  display: flex; align-items: center;
}
.nav-logo img { height: 32px; width: auto; }

/* Nav links */
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-mid);
  transition: color var(--transition); position: relative; white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--primary); border-radius: 1px;
}

/* Nav CTA */
.nav-cta {
  background: var(--primary) !important; color: #fff !important;
  padding: 8px 22px !important; border-radius: 30px !important;
  font-weight: 600 !important; transition: all var(--transition) !important;
}
.nav-cta:hover {
  background: var(--primary-dark) !important; transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(156,200,41,0.3) !important;
}
.nav-cta::after { display: none !important; }

/* Mobile */
.mobile-toggle { display: none; background: none; padding: 8px; cursor: pointer; }
.mobile-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-dark);
  margin: 5px 0; transition: var(--transition);
}
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
  background: #fff; z-index: 999; padding: 24px; overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-close {
  position: absolute; top: 16px; right: 24px;
  background: none; border: none; font-size: 28px;
  color: var(--text-dark); cursor: pointer;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: background var(--transition);
}
.mobile-close:hover { background: var(--bg-light); }
.mobile-nav a {
  display: block; padding: 16px 0; font-size: 18px; font-weight: 500;
  border-bottom: 1px solid var(--border-light);
}

/* ===== Hero Section (Homepage) ===== */
.hero {
  min-height: 60vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 72px;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: var(--max-width); margin: 0 auto; padding: 60px 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-text h1 {
  font-size: clamp(36px, 5vw, 52px); font-weight: 900;
  line-height: 1.2; margin-bottom: 16px; color: var(--text-dark);
}
.hero-text h1 .highlight { color: var(--primary); }
.hero-desc {
  font-size: 16px; color: var(--text-mid); max-width: 480px;
  margin-bottom: 32px; line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero visual */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-product-img {
  width: 100%; max-width: 500px;
  border-radius: var(--radius-lg);
  object-fit: contain;
}

/* ===== Feature Strip ===== */
.feature-strip {
  background: #fff; border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 36px 40px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  box-shadow: var(--shadow-sm);
  position: relative; z-index: 2;
  max-width: var(--max-width); margin: -40px auto 0;
}
.feature-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 8px 0;
}
.feature-item + .feature-item { border-left: 1px solid var(--border-light); padding-left: 24px; }
.feature-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: var(--primary-bg); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.feature-icon svg { width: 22px; height: 22px; fill: var(--primary); }
.feature-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 2px; color: var(--text-dark); }
.feature-item p { font-size: 12px; color: var(--text-light); line-height: 1.5; }

/* ===== Inner Page Hero (dark immersive, matching homepage) ===== */
.inner-hero {
  min-height: 70vh; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  padding-top: 72px;
}
.inner-hero .hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: center center/cover no-repeat;
}
.inner-hero .hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,15,25,0.75) 0%, rgba(15,15,25,0.9) 100%);
}
.inner-hero .hero-content::before {
  content: ''; position: absolute; inset: -40px;
  background: radial-gradient(ellipse at center, rgba(15,15,25,0.2), transparent 70%);
  z-index: -1;
}
.inner-hero .hero-content {
  position: relative; z-index: 2; text-align: center;
  padding: 80px 24px; max-width: 700px;
}
.inner-hero .hero-label {
  font-family: 'Outfit', sans-serif;
  font-size: 12px; font-weight: 600; color: var(--primary);
  text-transform: uppercase; letter-spacing: 3px; margin-bottom: 8px;
}
.inner-hero h1 {
  font-size: clamp(28px, 4vw, 44px); font-weight: 900;
  color: #ffffff; margin-bottom: 12px; line-height: 1.3;
}
.inner-hero h1 .highlight {
  color: var(--primary);
}
.inner-hero p {
  font-size: 16px; color: rgba(255,255,255,0.7); max-width: 550px; margin: 0 auto;
}
/* Inner hero stagger */
@keyframes hero-fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.inner-hero .hero-label { opacity: 0; animation: hero-fade-up 0.6s 0.3s ease forwards; }
.inner-hero h1 { opacity: 0; animation: hero-fade-up 0.6s 0.4s ease forwards; }
.inner-hero p { opacity: 0; animation: hero-fade-up 0.6s 0.6s ease forwards; }

/* Inner hero parallax bg */
.inner-hero .hero-bg { animation: hero-bg-zoom 20s ease-in-out infinite alternate; }
@keyframes hero-bg-zoom {
  from { transform: scale(1); }
  to { transform: scale(1.05); }
}

/* Section label underline */
.section-label { position: relative; display: inline-block; }
.section-label::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 30px; height: 2px; background: var(--primary);
  border-radius: 1px;
}

/* ===== Section Common ===== */
.section { padding: 80px 0; }
.section-label {
  font-family: 'Outfit', sans-serif;
  font-size: 12px; font-weight: 600; color: var(--primary);
  text-transform: uppercase; letter-spacing: 3px; margin-bottom: 8px;
}
.section-title {
  font-size: clamp(24px, 3vw, 36px); font-weight: 800;
  color: var(--text-dark); margin-bottom: 12px; line-height: 1.3;
}
.section-desc { color: var(--text-mid); font-size: 15px; max-width: 560px; margin-bottom: 48px; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 30px; font-size: 14px;
  font-weight: 600; transition: all var(--transition); cursor: pointer; border: none;
}
.btn-primary { background: var(--primary); color: #fff; position: relative; overflow: hidden; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(156,200,41,0.3); }
.btn-primary:active::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 200px; height: 200px; background: rgba(255,255,255,0.3);
  border-radius: 50%; transform: translate(-50%, -50%) scale(0);
  animation: btn-ripple 0.6s ease-out forwards;
}
@keyframes btn-ripple {
  to { transform: translate(-50%, -50%) scale(1); opacity: 0; }
}
.btn-lg { padding: 14px 32px; font-size: 1rem; font-weight: 600; border-radius: 30px; }
.btn-outline-warm { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); transition: all 0.25s; }
.btn-outline-warm:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); position: relative; overflow: hidden; }
.btn-outline::before {
  content: ''; position: absolute; inset: 0;
  background: var(--primary); transform: scaleX(0);
  transform-origin: left; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1; border-radius: 30px;
}
.btn-outline:hover { color: #fff; border-color: var(--primary); }
.btn-outline:hover::before { transform: scaleX(1); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }

/* ===== Trust Badges ===== */
.trust-badges {
  padding: 40px 0; border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.trust-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 40px; flex-wrap: wrap;
}
.trust-badge {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--text-light);
}
.trust-badge .badge-icon {
  width: 40px; height: 40px; background: var(--bg-light);
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; font-size: 16px; font-weight: 700; color: var(--text-mid);
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, #9CC829, #B3E044);
  padding: 60px 24px; text-align: center; color: #fff;
}
.cta-banner h2 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,0.9); margin-bottom: 24px; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-btn-primary { display:inline-flex!important;align-items:center!important;gap:8px;background:#fff!important;color:#9CC829!important;padding:14px 32px!important;border-radius:var(--radius-sm)!important;font-size:16px!important;font-weight:700!important;text-decoration:none!important;transition:transform 0.2s,box-shadow 0.2s; }
.cta-btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,0.15); }
.cta-btn-secondary { display:inline-flex!important;align-items:center!important;gap:8px;background:rgba(255,255,255,0.2)!important;color:#fff!important;padding:14px 32px!important;border-radius:var(--radius-sm)!important;font-size:16px!important;font-weight:700!important;text-decoration:none!important;border:2px solid rgba(255,255,255,0.5)!important;transition:transform 0.2s,box-shadow 0.2s; }
.cta-btn-secondary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,0.15); }
@media (max-width: 768px) { .cta-btns { flex-direction: column; align-items: center; } }

/* ===== Footer ===== */
.site-footer {
  background: #2d2d2d; color: rgba(255,255,255,0.7); padding: 60px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px;
}
.footer-brand .logo {
  font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 24px;
  color: var(--primary); margin-bottom: 12px;
}
.footer-brand .logo span { color: #fff; font-weight: 400; }
.footer-brand p { font-size: 13px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 13px; padding: 4px 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-contact {
  background: rgba(156,200,41,0.12); border-radius: var(--radius); padding: 20px;
}
.footer-contact h4 { color: var(--primary) !important; }
.footer-contact .phone { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.footer-contact .hours { font-size: 12px; color: rgba(255,255,255,0.5); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: rgba(255,255,255,0.4);
}
.footer-bottom-left { display: flex; align-items: center; gap: 16px; }
.footer-icp { color: rgba(255,255,255,0.4); }
.footer-icp a { color: rgba(255,255,255,0.4); }
.footer-icp a:hover { color: var(--primary); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { white-space: nowrap; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--primary); }
.social-icon-wrap { position: relative; cursor: pointer; display: inline-block; }
.social-icon-wrap:hover { opacity: 0.85; }
.social-text-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; font-size: 15px; font-weight: 900;
  color: rgba(255,255,255,0.7); font-family: 'PingFang SC','Microsoft YaHei',sans-serif;
  border: 1.5px solid rgba(255,255,255,0.5); border-radius: 4px; line-height: 1;
}
.social-icon-wrap .social-qr-popup {
  display: none;
  position: absolute;
  bottom: 36px;
  left: 50%;
  margin-left: -80px;
  padding: 6px;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  z-index: 9999;
}
.social-icon-wrap .social-qr-popup img {
  display: block;
  max-width: 180px;
  max-height: 220px;
  height: auto;
  border-radius: 2px;
}
.social-icon-wrap:hover .social-qr-popup { display: block; }
.social-icon-wrap:hover svg { fill: var(--primary); }
.social-icon-wrap:hover .social-text-icon { color: var(--primary) !important; border-color: var(--primary) !important; }

/* ===== FAQ Accordion (shared) ===== */
.faq-item {
  background: #fff; border-radius: var(--radius); margin-bottom: 12px;
  border: 1px solid var(--border); overflow: hidden;
}
.faq-question {
  padding: 20px 24px; font-size: 15px; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-warm); }
.faq-question::after { content: '+'; font-size: 20px; color: var(--primary); font-weight: 300; }
.faq-item.open .faq-question::after { content: '\2212'; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.open .faq-answer { max-height: 600px; }
.faq-answer-inner { padding: 0 24px 20px; color: var(--text-mid); font-size: 14px; line-height: 1.7; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .feature-strip { grid-template-columns: repeat(2, 1fr); margin: -30px 24px 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .section { padding: 48px 0; }
  .feature-strip { grid-template-columns: 1fr; margin: -20px 16px 0; padding: 24px; }
  .feature-item + .feature-item { border-left: none; border-top: 1px solid var(--border-light); padding-left: 0; padding-top: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .trust-inner { gap: 20px; }
}