/* ============================================================
   QanvorPress · OPC Landing Page Style
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #4F46E5;
  --primary-lt: #EEF2FF;
  --primary-dk: #3730A3;
  --accent:     #06B6D4;
  --accent-lt:  #ECFEFF;
  --dark:       #0F172A;
  --gray-900:   #1E293B;
  --gray-700:   #334155;
  --gray-500:   #64748B;
  --gray-300:   #CBD5E1;
  --gray-100:   #F1F5F9;
  --white:      #FFFFFF;
  --green:      #10B981;
  --green-lt:   #ECFDF5;
  --orange:     #F59E0B;
  --red:        #EF4444;
  --red-lt:     #FEF2F2;
  --radius:     12px;
  --radius-lg:  20px;
  --shadow-sm:  0 1px 3px rgba(15,23,42,.06);
  --shadow-md:  0 4px 24px rgba(15,23,42,.08);
  --shadow-lg:  0 12px 48px rgba(15,23,42,.12);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-w: 1180px;
  --nav-h: 64px;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ============ NAVBAR ============ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(15,23,42,.06);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 20px; color: var(--dark);
}
.nav-logo-icon {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 15px;
}
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--gray-500);
  transition: color .2s;
}
.nav-links a:hover { color: var(--primary); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 20px; border-radius: 10px;
  font-size: 14px; font-weight: 600;
  transition: all .2s;
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 14px rgba(79,70,229,.3);
}
.btn-primary:hover { background: var(--primary-dk); transform: translateY(-1px); }
.btn-ghost {
  color: var(--gray-700); background: var(--gray-100);
}
.btn-ghost:hover { background: var(--gray-300); }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.lang-switch {
  padding: 6px 12px; border-radius: 8px;
  font-size: 13px; font-weight: 500; color: var(--gray-500);
  background: var(--gray-100); border: 1px solid var(--gray-300);
}

/* ============ WECHAT BUTTON + MODAL ============ */
.wechat-btn {
  width: 38px; height: 38px; border-radius: 10px;
  background: #07C160; color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all .2s;
  border: none;
}
.wechat-btn:hover { background: #06AD56; transform: scale(1.05); }
.wechat-btn svg { width: 20px; height: 20px; fill: currentColor; }

.modal-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(15,23,42,.6);
  display: none; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-mask.show { display: flex; }
.modal-box {
  background: #fff; border-radius: 20px; padding: 32px;
  max-width: 360px; width: 90%; text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,.25);
  animation: modalIn .2s ease-out;
}
@keyframes modalIn {
  from { transform: scale(.9); opacity: 0; }
  to   { transform: scale(1);  opacity: 1; }
}
.modal-box h3 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.modal-box p  { font-size: 13px; color: var(--gray-500); margin-bottom: 20px; }
.modal-box img {
  width: 240px; height: 240px; object-fit: cover;
  border-radius: 12px; margin: 0 auto;
  border: 1px solid var(--gray-100);
}
.modal-close {
  margin-top: 20px; padding: 8px 20px;
  background: var(--gray-100); color: var(--gray-700);
  border-radius: 8px; font-size: 13px; font-weight: 500;
  cursor: pointer;
}
.modal-close:hover { background: var(--gray-300); }

/* ============ HERO ============ */
.hero {
  padding: calc(var(--nav-h) + 60px) 0 80px;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(79,70,229,.08), transparent),
    var(--white);
  text-align: center;
}
.hero-badge {
  display: inline-block; padding: 6px 14px;
  background: var(--primary-lt); color: var(--primary);
  border-radius: 999px; font-size: 13px; font-weight: 600;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 48px; line-height: 1.15; color: var(--dark);
  font-weight: 800; letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 18px; color: var(--gray-500);
  max-width: 720px; margin: 0 auto 36px;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-meta {
  margin-top: 32px; font-size: 13px; color: var(--gray-500);
}
.hero-meta span { margin: 0 12px; }

/* ============ SECTION COMMON ============ */
section { padding: 80px 0; }
.section-tag {
  display: inline-block; padding: 4px 12px;
  background: var(--gray-100); color: var(--gray-700);
  border-radius: 999px; font-size: 12px; font-weight: 600;
  letter-spacing: .05em; text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px; line-height: 1.2; color: var(--dark);
  font-weight: 800; letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px; color: var(--gray-500);
  max-width: 680px; margin-bottom: 48px;
}
.text-center { text-align: center; }
.text-center .section-sub { margin-left: auto; margin-right: auto; }

/* ============ 痛点 ============ */
.pain { background: var(--gray-100); }
.pain-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.pain-card {
  background: var(--white); padding: 28px;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}
.pain-card .icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--red-lt); color: var(--red);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700; margin-bottom: 16px;
}
.pain-card h3 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.pain-card p { font-size: 14px; color: var(--gray-500); }

/* ============ 买断 vs 订阅对比 ============ */
.compare { background: var(--dark); color: #fff; }
.compare .section-title { color: #fff; }
.compare .section-sub { color: rgba(255,255,255,.6); }
.compare-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  background: rgba(255,255,255,.04);
  border-radius: var(--radius-lg); overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: 18px 24px; text-align: left;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.compare-table th {
  font-size: 14px; font-weight: 600; color: rgba(255,255,255,.5);
  text-transform: uppercase; letter-spacing: .05em;
}
.compare-table th.ours { color: var(--accent); }
.compare-table td:first-child { color: rgba(255,255,255,.9); font-weight: 500; }
.compare-table td.ours { color: #fff; font-weight: 600; }
.compare-table td.theirs { color: rgba(255,255,255,.55); }
.compare-table tr:last-child td { border-bottom: none; }
.check { color: var(--green); font-weight: 700; margin-right: 6px; }
.cross { color: var(--red); font-weight: 700; margin-right: 6px; }
.compare-note {
  margin-top: 24px; padding: 16px 20px;
  background: rgba(6,182,212,.1); border-left: 3px solid var(--accent);
  border-radius: 8px; font-size: 14px; color: rgba(255,255,255,.8);
}

/* ============ 定价 ============ */
.pricing-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  align-items: stretch;
}
.price-card {
  background: var(--white); padding: 32px 24px;
  border-radius: var(--radius-lg); border: 1px solid var(--gray-100);
  display: flex; flex-direction: column;
  transition: all .2s;
}
.price-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.price-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 12px 40px rgba(79,70,229,.15);
  position: relative;
}
.price-card.featured::before {
  content: "最受欢迎";
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff;
  padding: 4px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.price-name { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.price-desc { font-size: 13px; color: var(--gray-500); margin-bottom: 20px; }
.price-amount { font-size: 36px; font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.price-amount .currency { font-size: 18px; font-weight: 600; vertical-align: super; }
.price-note { font-size: 12px; color: var(--gray-500); margin-bottom: 24px; }
.price-features { list-style: none; flex: 1; margin-bottom: 24px; }
.price-features li {
  font-size: 13px; color: var(--gray-700);
  padding: 6px 0; padding-left: 22px; position: relative;
}
.price-features li::before {
  content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700;
}
.price-card .btn { margin-top: auto; }

/* ============ 功能矩阵 ============ */
.features { background: var(--gray-100); }
.feature-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
.feature-item {
  background: var(--white); padding: 28px;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}
.feature-item .num {
  font-size: 13px; font-weight: 700; color: var(--primary);
  letter-spacing: .1em; margin-bottom: 8px;
}
.feature-item h3 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.feature-item p { font-size: 14px; color: var(--gray-500); }

/* ============ CTA ============ */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dk) 100%);
  color: #fff; text-align: center;
}
.cta h2 { font-size: 36px; margin-bottom: 16px; }
.cta p { font-size: 17px; color: rgba(255,255,255,.8); margin-bottom: 32px; }
.cta .btn-primary {
  background: #fff; color: var(--primary);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}

/* ============ FOOTER ============ */
footer {
  padding: 40px 0; background: var(--dark); color: rgba(255,255,255,.6);
  font-size: 13px;
}
footer .container {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
footer a { color: rgba(255,255,255,.8); }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .section-title { font-size: 26px; }
  .pain-grid, .pricing-grid, .feature-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .compare-table th, .compare-table td { padding: 12px; font-size: 13px; }
}