/* BoostNet Mirror — dark tech theme */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --primary:       #165dff;
  --primary-dark:  #0e46cc;
  --primary-glow:  rgba(22,93,255,.18);
  --dark:          #181a21;
  --header-bg:     #181a21;
  --bg:            #181a21;
  --surface:       #1b1f2a;
  --surface-2:     #21232e;
  --surface-3:     #2c2e3c;
  --text:          #ffffff;
  --text-muted:    #a7a7b1;
  --text-tertiary: #848596;
  --green:         #1aae5b;
  --red:           #e03c31;
  --border:        rgba(255,255,255,.10);
  --border-muted:  rgba(255,255,255,.06);
  --radius-sm:     6px;
  --radius-md:     8px;
  --radius-lg:     10px;
  --radius-xl:     16px;
  --radius-pill:   100px;
  --shadow-card:   0px 4px 10px 0px rgba(0,0,0,0.05);
  --shadow-glow:   0 0 7px 1px rgba(255,255,255,.07);
  --shadow-lg:     0 8px 32px rgba(0,0,0,.45);
  --transition:    0.2s ease;
  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  24px;
  --space-lg:  48px;
  --space-xl:  80px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: hidden; max-width: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC',
    'Hiragino Sans GB', 'Noto Sans', 'Microsoft YaHei', Helvetica, Arial, sans-serif;
  font-size: 16px; line-height: 1.6; color: var(--text); background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { margin-top: 0; line-height: 1.2; color: var(--text); }

/* ─── HEADER ─── */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(24,26,33,.75);
  border-bottom: 1px solid rgba(210,210,210,.15);
  backdrop-filter: blur(12px);
}
.nav {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center;
  padding: 0 var(--space-sm);
  height: 64px; gap: var(--space-sm);
}
.brand { display: flex; align-items: center; flex-shrink: 0; }
.logo { height: 36px; width: auto; max-width: 160px; object-fit: contain; }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  flex: 1; justify-content: flex-start; margin-left: 8px;
}
.nav-links > li > a {
  color: rgba(255,255,255,.8); font-size: 16px; font-weight: 600;
  padding: 8px 12px; border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-links > li > a:hover { color: #fff; background: rgba(255,255,255,.08); text-decoration: none; }
.mobile-lang { display: none; }

/* ─── DROPDOWN / LANGUAGE SWITCHER ─── */
.dropdown { position: relative; }
.dropdown-panel {
  position: absolute; top: 100%; right: 0;
  margin-top: 0; padding-top: 8px;
  display: none; min-width: 160px; z-index: 1000;
}
.dropdown-panel-inner {
  background: var(--surface-3); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.dropdown:hover .dropdown-panel,
.dropdown:focus-within .dropdown-panel { display: block; }
.dropdown-panel a {
  display: block; padding: 10px 16px;
  color: var(--text-muted); font-size: 14px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.dropdown-panel a:hover { background: var(--surface-2); color: #fff; text-decoration: none; }

.lang-btn {
  background: none; border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.8); padding: 6px 12px;
  border-radius: var(--radius-sm); cursor: pointer;
  font-size: 13px; display: flex; align-items: center; gap: 6px;
  transition: border-color var(--transition);
  font-family: inherit;
}
.lang-btn:hover { border-color: rgba(255,255,255,.5); }

/* ─── NAV RIGHT BUTTONS ─── */
.nav-right {
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0; margin-left: auto;
}
.btn-dark {
  background: var(--surface-3); color: #fff;
  padding: 8px 18px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; display: inline-block;
  transition: background var(--transition);
  white-space: nowrap;
}
.btn-dark:hover { background: var(--surface-2); text-decoration: none; }
.btn-outline-nav {
  background: var(--primary); color: #fff;
  border: 1.5px solid var(--primary); padding: 8px 18px;
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
  display: inline-block; transition: all var(--transition); white-space: nowrap;
}
.btn-outline-nav:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; text-decoration: none; }

/* ─── HAMBURGER ─── */
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  color: #fff; font-size: 22px; padding: 6px; order: 99;
}

/* ─── CTA BUTTONS ─── */
.btn-cta {
  background: var(--primary); color: #fff;
  padding: 10px 22px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 600; display: inline-block;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-cta:hover { background: var(--primary-dark); text-decoration: none; transform: translateY(-1px); }
.btn-cta-lg {
  background: var(--primary); color: #fff;
  padding: 16px 38px; border-radius: var(--radius-md);
  font-size: 18px; font-weight: 700; display: inline-block;
  transition: background var(--transition), transform var(--transition);
}
.btn-cta-lg:hover { background: var(--primary-dark); text-decoration: none; transform: translateY(-2px); }
.btn-outline {
  border: 2px solid rgba(255,255,255,.35); color: #fff;
  padding: 14px 34px; border-radius: var(--radius-md);
  font-size: 18px; font-weight: 600; display: inline-block;
  transition: all var(--transition);
}
.btn-outline:hover { border-color: #fff; text-decoration: none; }
.btn-support {
  display: inline-block; background: var(--primary-glow);
  border: 1.5px solid var(--primary); color: var(--primary);
  padding: 10px 22px; border-radius: var(--radius-md); font-size: 14px; font-weight: 600;
  transition: all var(--transition); margin-top: 16px;
}
.btn-support:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ─── HERO ─── */
.hero {
  background: var(--bg);
  color: #fff; padding: var(--space-xl) var(--space-sm);
  position: relative; overflow: hidden;
}
/* Layer 1 — sharp base image */
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: url('/assets/images/hero.jpg') 65% center / cover no-repeat;
}
/* Layer 2 — blurred + masked image (injected span) */
.hero-bg-blur {
  position: absolute; inset: -5%; z-index: 1; pointer-events: none;
  background: url('/assets/images/hero.jpg') 65% center / cover no-repeat;
  filter: blur(22px);
  -webkit-mask-image: linear-gradient(to right, black 0%, black 40%, transparent 70%);
  mask-image: linear-gradient(to right, black 0%, black 40%, transparent 70%);
}
/* Layer 3 — dark gradient overlay */
.hero::after {
  content: ''; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(to right,
    rgba(13,15,20,.88)  0%,
    rgba(13,15,20,.55) 42%,
    rgba(13,15,20,.28) 68%,
    rgba(13,15,20,.15) 100%);
}
.hero-inner {
  position: relative; max-width: 600px; z-index: 3;
  padding-top: 16px;
}
.hero-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-lg); align-items: center;
  max-width: 1100px;
  margin: 0 auto 0 max(16px, calc((100% - 1320px) / 2));
  position: relative; z-index: 3;
}
.hero .hero-screenshot-wrap { display: none; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(22,93,255,.15); border: 1px solid rgba(22,93,255,.4);
  color: #6ea8ff; padding: 6px 16px; border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 56px); font-weight: 500;
  margin-bottom: 20px; color: #fff; line-height: 1.2;
}
.hero h1 strong { font-weight: 900; color: #fff; }
.hero > .hero-layout > .hero-inner > p,
.hero-inner > p {
  font-size: 16px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.7;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-note {
  margin-top: 20px; font-size: 13px; color: var(--text-tertiary);
}
.hero-screenshot-wrap {
  position: relative; z-index: 1;
}
.hero-screenshot {
  border-radius: var(--radius-xl); box-shadow: var(--shadow-lg);
  width: 100%; height: auto;
}

/* ─── TRUST BAR ─── */
.trust-bar {
  background: var(--surface); border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border); padding: 28px var(--space-sm);
}
.trust-bar-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-lg); flex-wrap: wrap;
}
.trust-item { text-align: center; }
.trust-num {
  font-size: 28px; font-weight: 800; color: var(--primary);
  display: block; line-height: 1;
}
.trust-label {
  font-size: 12px; color: var(--text-muted); text-transform: uppercase;
  letter-spacing: .5px; margin-top: 6px; display: block;
}
.trust-divider { width: 1px; height: 40px; background: var(--border); }

/* ─── SECTIONS ─── */
.section { padding: var(--space-xl) var(--space-sm); }
.section-alt { background: var(--surface); }
.container { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--primary); margin-bottom: 10px; display: block;
}
.section-title {
  font-size: clamp(24px, 3.5vw, 40px); font-weight: 900; margin-bottom: 16px; color: var(--text);
}
.section-sub { font-size: 17px; color: var(--text-muted); max-width: 600px; margin-bottom: 40px; }
.text-center { text-align: center; }
.text-center .section-sub { margin-left: auto; margin-right: auto; }

/* ─── FEATURE GRID ─── */
.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}
.feature-card {
  background: var(--surface-3); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: var(--space-md);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px); border-color: rgba(22,93,255,.35);
}
.feature-card i { font-size: 28px; color: var(--primary); margin-bottom: 14px; display: block; }
.feature-card h3 { font-size: 24px; font-weight: 600; line-height: 32px; margin-bottom: 8px; color: var(--text); }
.feature-card p { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.65; }

/* ─── SPLIT ROW ─── */
.split-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-lg); align-items: center;
}
.split-row.reverse { direction: rtl; }
.split-row.reverse > * { direction: ltr; }
.split-image { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-lg); }
.split-image img { width: 100%; height: 320px; object-fit: cover; }
.split-content .section-title { font-size: clamp(22px, 3vw, 34px); }
.check-list { margin: var(--space-sm) 0 var(--space-md); }
.check-list li {
  padding: 8px 0; display: flex; gap: 10px; align-items: flex-start;
  font-size: 15px; color: var(--text-muted); border-bottom: 1px solid var(--border-muted);
}
.check-list li:last-child { border-bottom: none; }
.check-list li::before { content: '\2713'; color: var(--primary); font-weight: 700; font-size: 16px; flex-shrink: 0; margin-top: 1px; }

/* ─── IMAGE STRIP ─── */
.image-strip {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm);
}
.image-strip-item { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3; }
.image-strip-item img { width: 100%; height: 100%; object-fit: cover; }

/* ─── PRICING ─── */
.pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-md);
}
.pricing-card {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: var(--space-md);
  position: relative; transition: box-shadow var(--transition), border-color var(--transition);
}
.pricing-card.popular {
  border-color: var(--primary); border-width: 2px;
  box-shadow: 0 0 0 4px var(--primary-glow);
}
.pricing-card:hover { box-shadow: var(--shadow-card); }
.popular-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; padding: 4px 16px;
  border-radius: var(--radius-pill); font-size: 12px; font-weight: 700; white-space: nowrap;
}
.pricing-name { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: var(--space-xs); }
.pricing-price { font-size: 42px; font-weight: 900; color: var(--text); line-height: 1; }
.pricing-price sup { font-size: 22px; vertical-align: top; margin-top: 8px; display: inline-block; }
.pricing-period { font-size: 13px; color: var(--text-muted); margin-bottom: var(--space-sm); margin-top: 6px; }
.pricing-divider { height: 1px; background: var(--border); margin: var(--space-sm) 0; }
.pricing-features li { padding: 6px 0; display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--text-muted); }
.pricing-features li::before { content: '\2713'; color: var(--primary); font-weight: 700; flex-shrink: 0; }
.pricing-features li.no::before { content: '\2715'; color: var(--border); }
.pricing-cta {
  width: 100%; padding: 13px; border-radius: var(--radius-md); font-size: 15px; font-weight: 700;
  cursor: pointer; margin-top: var(--space-sm); display: block; text-align: center;
  transition: all var(--transition); background: var(--primary); color: #fff; border: none;
  font-family: inherit;
}
.pricing-cta:hover { background: var(--primary-dark); text-decoration: none; }

/* ─── FAQ SPLIT ─── */
.faq-split {
  display: grid; grid-template-columns: 1fr 2fr; gap: var(--space-xl); align-items: start;
}
.faq-split-heading { font-size: clamp(28px, 4vw, 44px); font-weight: 900; color: var(--text); margin-bottom: 12px; }
.faq-split-desc { color: var(--text-muted); font-size: 15px; line-height: 1.7; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%; background: none; border: none; text-align: left;
  padding: var(--space-sm) 0; font-size: 16px; font-weight: 600;
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  color: var(--text); font-family: inherit;
}
.faq-q i { color: var(--primary); flex-shrink: 0; transition: transform var(--transition); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 0 var(--space-sm); font-size: 15px; color: var(--text-muted); line-height: 1.7; }
.faq-item.open .faq-a { display: block; }
.faq-list { max-width: 760px; margin: 0 auto; }

/* ─── PLATFORM GRID ─── */
.platform-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--space-md);
}
.platform-card {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-sm); text-align: center;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.platform-card:hover { box-shadow: var(--shadow-card); transform: translateY(-2px); border-color: rgba(22,93,255,.4); }
.platform-card i { font-size: 36px; color: var(--primary); margin-bottom: var(--space-sm); }
.platform-card span { font-size: 14px; font-weight: 600; display: block; color: var(--text); }

/* ─── GUARANTEE BANNER ─── */
.guarantee-banner {
  background: linear-gradient(135deg, #0e46cc 0%, #165dff 50%, #3a7eff 100%);
  color: #fff; text-align: center;
  padding: var(--space-lg) var(--space-sm); border-radius: var(--radius-xl);
  margin: var(--space-lg) 0;
}
.guarantee-banner h2 { font-size: clamp(22px, 4vw, 36px); margin-bottom: var(--space-sm); color: #fff; }
.guarantee-banner p { font-size: 16px; color: rgba(255,255,255,.85); margin-bottom: var(--space-md); max-width: 560px; margin-left: auto; margin-right: auto; }

/* ─── PAGE HERO (inner pages) ─── */
.page-hero {
  background: linear-gradient(160deg, var(--surface) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  text-align: center; padding: 72px var(--space-sm) var(--space-xl);
}
.page-hero h1 { font-size: clamp(26px, 4vw, 44px); font-weight: 900; margin-bottom: 16px; color: var(--text); }
.page-hero p { font-size: 18px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ─── CONTACT ─── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 14px; font-weight: 600; color: var(--text); }
.form-group input, .form-group textarea, .form-group select {
  padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-md);
  font-size: 15px; font-family: inherit; background: var(--surface-2); color: var(--text);
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--primary);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit {
  background: var(--primary); color: #fff; border: none; cursor: pointer;
  padding: 14px 32px; border-radius: var(--radius-md); font-size: 16px; font-weight: 700;
  transition: background var(--transition); font-family: inherit;
}
.form-submit:hover { background: var(--primary-dark); }

/* ─── PROSE (privacy/terms) ─── */
.prose { max-width: 800px; margin: 0 auto; font-size: 15px; line-height: 1.8; }
.prose h2 { font-size: 22px; margin-top: 40px; margin-bottom: 12px; color: var(--text); }
.prose h3 { font-size: 17px; margin-top: 28px; color: var(--text); }
.prose p { margin-bottom: 16px; color: var(--text-muted); }
.prose ul { margin: 12px 0 16px 24px; list-style: disc; }
.prose ul li { color: var(--text-muted); margin-bottom: 6px; }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--border);
  color: var(--text-muted); padding: var(--space-xl) var(--space-sm) var(--space-md);
}
.footer-grid {
  max-width: 1100px;
  margin: 0 auto var(--space-xl) max(16px, calc((100% - 1320px) / 2));
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}
.footer-brand .logo-footer { height: 36px; width: auto; margin-bottom: var(--space-sm); }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; color: var(--text-muted); }
.footer-col h4 { color: var(--text); font-size: 13px; font-weight: 700; margin-bottom: var(--space-sm); text-transform: uppercase; letter-spacing: .5px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: var(--text-muted); font-size: 14px; transition: color var(--transition); }
.footer-col ul li a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  max-width: 1100px;
  margin: 0 auto 0 max(16px, calc((100% - 1320px) / 2));
  border-top: 1px solid var(--border); padding-top: var(--space-sm);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 13px; margin: 0; }

/* ─── MOBILE ─── */
@media (max-width: 768px) {
  .nav { padding: 0 8px; }
  .nav-links {
    display: none; position: absolute; top: 100%;
    left: 0; right: 0; flex-direction: column; align-items: center;
    height: auto; max-height: none; overflow: visible;
    background: var(--header-bg);
    box-shadow: 0 8px 16px rgba(0,0,0,.4);
    padding: 12px 0; z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links > li { width: 100%; text-align: center; }
  .nav-links > li > a { display: block; width: 100%; padding: 14px 0; font-size: 17px; }
  .nav-right .lang-switcher { display: none; }
  .nav-right .btn-dark { display: none; }
  .nav-right .btn-outline-nav { display: none; }
  .nav-toggle { display: block; }
  .mobile-lang {
    display: flex; justify-content: center; gap: 16px;
    padding: 14px 0; border-top: 1px solid var(--border); width: 100%;
  }
  .nav-links li.mobile-lang a {
    display: inline-block; width: auto; padding: 4px 10px;
    font-size: 15px; color: var(--text-muted);
  }
  .nav-links li.mobile-lang a.active { color: var(--primary); font-weight: 700; }
  .hero-layout { grid-template-columns: 1fr; }
  .hero-screenshot-wrap { display: none; }
  .split-row { grid-template-columns: 1fr; }
  .split-row.reverse { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .trust-divider { display: none; }
  .pricing-grid { grid-template-columns: 1fr; }
  .image-strip { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .faq-split { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .btn-cta-lg, .btn-cta, .hero-cta .btn-cta-lg, .hero-cta .btn-outline, .btn-support {
    display: block; margin-left: auto; margin-right: auto;
    text-align: center; width: max-content; max-width: 90%;
  }
  .hero-cta { flex-direction: column; align-items: center; }
  .split-content { text-align: center; }
  .split-content .check-list { text-align: left; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── UTILITY ─── */
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.tag {
  display: inline-block; background: var(--surface-2); color: var(--primary);
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-pill);
  text-transform: uppercase; letter-spacing: .5px;
}