/* ============================================================
   快脸 — Premium SaaS Design System
   Warm White · Generous Space · Orange-Blue Accent
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand */
  --blue:         #4385f5;
  --blue-dim:     #3b76e0;
  --blue-dark:    #2563eb;
  --blue-glow:    rgba(67, 133, 245, 0.10);
  --blue-glow-strong: rgba(67, 133, 245, 0.20);

  --orange:       #f97316;
  --orange-dim:   #ea6c0a;
  --orange-glow:  rgba(249, 115, 22, 0.12);
  --orange-glow-strong: rgba(249, 115, 22, 0.22);

  --green:        #10b981;
  --green-dim:    #059669;
  --red:          #ea4235;

  /* Surface */
  --bg:           #fafafa;
  --surface:      #ffffff;
  --surface-hover:#f5f5f5;
  --surface-alt:  #f0f2f5;
  --border:       #e8e8e8;
  --border-hover: #d4d4d4;

  /* Typography */
  --text:         #111827;
  --text-muted:   #555555;
  --text-dim:     #999999;

  /* Dark section */
  --dark-bg:      #0f172a;
  --dark-surface: #1e293b;

  /* Layout */
  --radius:       8px;
  --radius-lg:    12px;
  --radius-xl:    16px;
  --nav-h:        64px;
  --section-pad:  120px;

  /* Shadows */
  --shadow-xs:    0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:    0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg:    0 10px 15px -3px rgba(0,0,0,0.06), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-xl:    0 20px 25px -5px rgba(0,0,0,0.06), 0 10px 10px -5px rgba(0,0,0,0.03);
  --shadow-card:  0 1px 3px rgba(0,0,0,0.04), 0 6px 16px rgba(0,0,0,0.04);

  /* Fonts */
  --font-sans:    'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Cascadia Code', 'Consolas', monospace;
}

/* ----- Reset ----- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }
.container { max-width:1120px; margin:0 auto; padding:0 32px; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position:fixed; top:0; width:100%; z-index:100;
  height:var(--nav-h);
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}

.nav-content {
  display:flex; align-items:center; justify-content:space-between;
  height:var(--nav-h);
}

.nav-logo { display:flex; align-items:center; gap:10px; }
.nav-logo img { height:32px; width:32px; border-radius:8px; object-fit:cover; }
.nav-brand { font-size:20px; font-weight:800; color:var(--blue-dark); letter-spacing:-0.5px; white-space:nowrap; }

.nav-links { display:flex; gap:36px; align-items:center; }
.nav-links a {
  font-size:14px; color:var(--text-muted); font-weight:500;
  transition:color 0.2s; letter-spacing:0.2px;
}
.nav-links a:hover { color:var(--text); }

.hamburger {
  display:none; flex-direction:column; gap:5px; cursor:pointer;
  z-index:110; background:none; border:none; padding:8px;
}
.hamburger span {
  display:block; width:20px; height:2px;
  background:var(--text); border-radius:2px; transition:all 0.3s;
}
.hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

.mobile-nav-overlay {
  display:none; position:fixed; inset:0; background:rgba(255,255,255,0.98);
  z-index:105; flex-direction:column; align-items:center; justify-content:center; gap:32px;
}
.mobile-nav-overlay.active { display:flex; }
.mobile-nav-overlay a {
  font-size:18px; font-weight:600; color:var(--text); transition:color 0.2s;
}
.mobile-nav-overlay a:hover { color:var(--blue); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-size:14px; font-weight:600;
  height:44px; padding:0 24px;
  border-radius:var(--radius); border:none;
  cursor:pointer; text-align:center; transition:all 0.2s;
  letter-spacing:0.2px; white-space:nowrap;
}

.btn-orange {
  background:var(--orange); color:#fff;
}
.btn-orange:hover { background:var(--orange-dim); }

.btn-blue {
  background:var(--blue-dark); color:#fff;
}
.btn-blue:hover { background:var(--blue-dim); }

.btn-ghost {
  background:transparent; color:var(--blue-dark);
  font-weight:600;
  border:1px solid var(--border);
}
.btn-ghost:hover { background:var(--surface-hover); border-color:var(--border-hover); }

.btn-outline { background:transparent; color:var(--blue-dark); border:1.5px solid var(--blue-dark); }
.btn-outline:hover { background:var(--blue-dark); color:#fff; }

.btn-wechat { background:var(--green); color:#fff; font-weight:600; }
.btn-wechat:hover { background:var(--green-dim); }

/* compat */
.btn-accent { background:var(--blue-dark); color:#fff; font-weight:600; }
.btn-accent:hover { background:var(--blue-dim); }

.btn-lg { height:48px; padding:0 32px; font-size:15px; }
.btn-xl { height:52px; padding:0 36px; font-size:16px; border-radius:10px; }
.btn-block { display:flex; width:100%; }
.btn:disabled { opacity:0.4; cursor:not-allowed; pointer-events:none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height:90vh;
  display:flex; align-items:center;
  background:var(--bg);
}

.hero .container {
  padding-top:calc(var(--nav-h) + 60px);
  padding-bottom:60px;
}

.hero-layout {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:80px;
  align-items:center;
}

.hero-left { max-width:520px; }

.hero h1 {
  font-size:40px; font-weight:800; margin-bottom:20px;
  line-height:1.25; letter-spacing:-0.5px; color:var(--text);
}
.hero h1 .accent-orange { color:var(--orange); }
.hero h1 .accent-blue { color:var(--blue-dark); }

.hero-desc {
  font-size:16px; color:var(--text-muted);
  margin-bottom:36px; line-height:1.7;
}

.hero-actions {
  display:flex; gap:12px; flex-wrap:wrap; align-items:center;
}

.hero-visual {
  display:flex; justify-content:center; align-items:center;
}

.hero-screenshot {
  border-radius:var(--radius-lg);
  box-shadow: var(--shadow-card);
  border:1px solid var(--border);
  max-width:100%;
}

/* Center hero variant */
.hero-center { text-align:center; }
.hero-center .container { max-width:680px; }
.hero-center .hero-desc { margin-left:auto; margin-right:auto; }
.hero-center .hero-actions { justify-content:center; }

/* ============================================================
   SECTION TITLES
   ============================================================ */
.section-title {
  font-size:30px; font-weight:800; text-align:center;
  margin-bottom:12px; color:var(--text); letter-spacing:-0.3px;
}
.section-title .accent-orange { color:var(--orange); }
.section-title .accent-blue { color:var(--blue-dark); }

.section-desc {
  text-align:center; color:var(--text-muted); font-size:15px;
  margin-bottom:56px; max-width:520px;
  margin-left:auto; margin-right:auto; line-height:1.7;
}

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.products-section { padding:var(--section-pad) 0; }

.product-grid-asymmetric {
  display:grid;
  grid-template-columns:1.4fr 1fr;
  grid-template-rows:auto auto;
  gap:20px;
}

/* Main product card */
.product-card-hero {
  grid-row:1 / 3;
  background:var(--surface);
  border-radius:var(--radius-xl);
  padding:48px 44px;
  border:1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition:box-shadow 0.3s;
  display:flex; flex-direction:column; justify-content:space-between;
}
.product-card-hero:hover { box-shadow: var(--shadow-lg); }

.product-card-hero .hero-badge-label {
  display:inline-block;
  background:var(--orange); color:#fff;
  padding:4px 12px; border-radius:6px;
  font-size:11px; font-weight:700; letter-spacing:0.5px;
  margin-bottom:20px; width:fit-content;
}

.product-card-hero h3 {
  font-size:24px; font-weight:800; color:var(--text);
  margin-bottom:10px;
}

.product-card-hero .hero-price {
  font-size:15px; color:var(--text-muted); margin-bottom:24px; line-height:1.7;
}
.product-card-hero .hero-price strong {
  color:var(--orange); font-size:18px; font-weight:800;
}

.product-card-hero .hero-features { list-style:none; margin-bottom:28px; }
.product-card-hero .hero-features li {
  padding:8px 0; font-size:14px; color:var(--text-muted);
  display:flex; align-items:center; gap:10px;
}
.product-card-hero .hero-features li .check {
  width:18px; height:18px; border-radius:50%;
  background:rgba(16,185,129,0.08);
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.product-card-hero .hero-features li .check svg {
  width:10px; height:10px; stroke:var(--green); fill:none;
  stroke-width:2.5; stroke-linecap:round; stroke-linejoin:round;
}

.product-card-hero .hero-screenshot-mini {
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-top:20px;
}

/* Side cards */
.product-card-side {
  background:var(--surface);
  border-radius:var(--radius-xl);
  padding:32px 28px;
  border:1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition:all 0.25s;
  display:flex; flex-direction:column; justify-content:center;
}
.product-card-side:hover {
  border-color:var(--border-hover);
  box-shadow: var(--shadow-md);
}

.product-card-side .side-icon {
  width:40px; height:40px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:16px;
  background:rgba(67,133,245,0.06);
  border:1px solid rgba(67,133,245,0.08);
}
.product-card-side .side-icon svg {
  width:20px; height:20px; stroke:var(--blue-dark); fill:none;
  stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round;
}

.product-card-side h3 { font-size:17px; font-weight:700; color:var(--text); margin-bottom:6px; }
.product-card-side p { font-size:13px; color:var(--text-muted); margin-bottom:14px; line-height:1.6; }
.product-card-side .side-price {
  font-size:17px; font-weight:800; color:var(--text); display:block; margin-bottom:8px;
}
.product-card-side .side-tag {
  display:inline-block; padding:3px 10px; border-radius:4px;
  font-size:11px; font-weight:600;
}
.tag-free { background:rgba(16,185,129,0.08); color:var(--green); border:1px solid rgba(16,185,129,0.15); }
.tag-active { background:rgba(67,133,245,0.08); color:var(--blue); border:1px solid rgba(67,133,245,0.12); }

/* ============================================================
   FEATURES
   ============================================================ */
.features { padding:var(--section-pad) 0; }

.feature-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:20px; }

.feature-card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-lg); padding:32px 24px;
  transition:all 0.25s; box-shadow: var(--shadow-card);
}
.feature-card:hover {
  border-color:var(--border-hover);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width:40px; height:40px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:16px;
  background:rgba(67,133,245,0.06);
  border:1px solid rgba(67,133,245,0.08);
}
.feature-icon svg {
  width:20px; height:20px; stroke:var(--blue-dark); fill:none;
  stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round;
}

.feature-card h3 { font-size:15px; font-weight:700; margin-bottom:6px; color:var(--text); }
.feature-card p { font-size:13px; color:var(--text-muted); line-height:1.6; }

/* ============================================================
   DARK SECTION — Pain Points
   ============================================================ */
.pain-section {
  padding:var(--section-pad) 0;
  background:var(--dark-bg);
  color:#fff;
}
.pain-section .section-title { color:#fff; }
.pain-section .section-desc { color:rgba(255,255,255,0.5); }
.pain-section .accent-orange { color:var(--orange); }

.pain-grid {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:20px;
}

.pain-card {
  background:var(--dark-surface);
  border:1px solid rgba(255,255,255,0.06);
  border-radius:var(--radius-lg); padding:36px 28px;
  text-align:left;
  transition:all 0.25s;
}
.pain-card:hover {
  border-color:rgba(255,255,255,0.12);
}

.pain-icon {
  width:40px; height:40px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:16px;
  background:rgba(249,115,22,0.1);
  border:1px solid rgba(249,115,22,0.15);
}
.pain-icon svg {
  width:20px; height:20px; stroke:var(--orange); fill:none;
  stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round;
}

.pain-card h3 { font-size:16px; font-weight:700; color:#fff; margin-bottom:8px; }
.pain-card p { font-size:14px; color:rgba(255,255,255,0.5); line-height:1.7; }

/* 4-col variant for yingxiao */
.pain-grid-4 {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:20px;
}

/* ============================================================
   COMPARISON TABLE
   ============================================================ */
.comparison { padding:var(--section-pad) 0; }

.compare-table {
  max-width:680px; margin:0 auto; border-radius:var(--radius-lg);
  overflow:hidden; border:1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.compare-row {
  display:grid; grid-template-columns:1.2fr 1fr 1fr 1.3fr;
  border-bottom:1px solid var(--border);
}
.compare-row:last-child { border-bottom:none; }
.compare-row > div {
  padding:14px 20px; font-size:13px;
  display:flex; align-items:center; justify-content:center;
}
.compare-header > div { font-weight:700; background:var(--surface-alt); color:var(--text); }
.compare-label { font-weight:600; color:var(--text-muted); justify-content:flex-start !important; }
.compare-val { color:var(--text-muted); }
.compare-val.hl { color:var(--blue-dark); font-weight:700; }

/* ============================================================
   PRICING
   ============================================================ */
.pricing { padding:var(--section-pad) 0; }

.pricing-card {
  max-width:420px; margin:0 auto;
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-xl); padding:48px 40px; text-align:center;
  box-shadow: var(--shadow-card);
}

.pricing-badge {
  display:inline-block;
  background:var(--surface-alt); color:var(--text-muted);
  padding:4px 16px; border-radius:20px; font-size:12px;
  font-weight:600; margin-bottom:24px;
}

.price-old { font-size:15px; color:var(--text-dim); text-decoration:line-through; }
.price-now { font-size:48px; font-weight:800; color:var(--text); }
.price-unit { font-size:18px; font-weight:400; color:var(--text-muted); }
.price-daily { font-size:13px; color:var(--text-muted); margin-bottom:28px; }

.pricing-features { list-style:none; text-align:left; margin-bottom:32px; }
.pricing-features li {
  padding:10px 0; font-size:14px; border-bottom:1px solid var(--border);
  color:var(--text-muted);
  display:flex; align-items:center; gap:10px;
}
.pricing-features li .check {
  width:18px; height:18px; border-radius:50%;
  background:rgba(16,185,129,0.08);
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.pricing-features li .check svg {
  width:10px; height:10px; stroke:var(--green); fill:none;
  stroke-width:2.5; stroke-linecap:round; stroke-linejoin:round;
}

.pricing-note { font-size:13px; color:var(--text-dim); margin-top:16px; }

/* ============================================================
   DOWNLOAD
   ============================================================ */
.download { padding:var(--section-pad) 0; }

.download-card {
  max-width:480px; margin:0 auto 48px;
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-lg); padding:28px 32px;
  display:flex; align-items:center; justify-content:space-between;
  box-shadow: var(--shadow-card);
}

.download-platform { display:flex; align-items:center; gap:16px; }

.download-platform-icon {
  width:44px; height:44px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  background:rgba(67,133,245,0.06);
  border:1px solid rgba(67,133,245,0.08);
}
.download-platform-icon svg {
  width:22px; height:22px; stroke:var(--blue-dark); fill:none;
  stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round;
}

.download-platform h3 { font-size:15px; margin-bottom:2px; color:var(--text); }
.download-platform p { font-size:13px; color:var(--text-dim); }

.download-steps { display:flex; justify-content:center; gap:80px; }

.step { text-align:center; }
.step-num {
  width:36px; height:36px; line-height:36px; border-radius:50%;
  background:var(--surface); border:1px solid var(--border);
  color:var(--text); font-weight:700; font-size:14px;
  margin:0 auto 8px;
}
.step p { font-size:13px; color:var(--text-muted); }

/* ============================================================
   SPLIT ROW
   ============================================================ */
.section-split { padding:var(--section-pad) 0; }
.split-row {
  display:grid; grid-template-columns:1fr 1fr;
  gap:80px; align-items:center; margin-bottom:80px;
}
.split-row:last-child { margin-bottom:0; }
.split-row.reverse .split-img { order:2; }
.split-row.reverse .split-text { order:1; }

.split-img {
  border-radius:var(--radius-lg); overflow:hidden;
  border:1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.split-img img { width:100%; height:320px; object-fit:cover; }

.split-tag {
  display:inline-block; padding:4px 12px; border-radius:4px;
  font-size:12px; font-weight:600; margin-bottom:12px;
}
.tag-accent { background:rgba(67,133,245,0.06); color:var(--blue); border:1px solid rgba(67,133,245,0.1); }
.tag-orange { background:rgba(249,115,22,0.06); color:var(--orange); border:1px solid rgba(249,115,22,0.1); }

.split-text h3 { font-size:22px; font-weight:700; color:var(--text); margin-bottom:12px; }
.split-text p { font-size:14px; color:var(--text-muted); line-height:1.8; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { padding:var(--section-pad) 0; }
.contact-info { display:flex; justify-content:center; gap:32px; flex-wrap:wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background:var(--surface); border-top:1px solid var(--border);
  padding:48px 0 24px;
}
.footer-content {
  display:flex; justify-content:space-between; align-items:center;
  margin-bottom:24px; flex-wrap:wrap; gap:16px;
}
.footer-links { display:flex; gap:24px; flex-wrap:wrap; }
.footer-links a { font-size:13px; color:var(--text-dim); transition:color 0.2s; }
.footer-links a:hover { color:var(--text); }
.footer-bottom {
  text-align:center; padding-top:24px;
  border-top:1px solid var(--border);
  font-size:12px; color:var(--text-dim);
}
.footer-bottom a { color:var(--text-dim); transition:color 0.2s; }
.footer-bottom a:hover { color:var(--text); }

/* ============================================================
   CONVERSION BANNER
   ============================================================ */
.conversion-banner {
  margin-top:40px; padding:24px 28px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  display:flex; align-items:center; justify-content:space-between;
  gap:20px; flex-wrap:wrap;
  box-shadow: var(--shadow-card);
}
.conversion-banner-text {
  font-size:14px; color:var(--text-muted); line-height:1.7;
}
.conversion-banner-text strong { color:var(--text); }
.conversion-banner .btn-orange { flex-shrink:0; }

/* ============================================================
   BLOG — 高级感极简设计
   ============================================================ */
.blog-section {
  padding: calc(var(--nav-h) + 80px) 0 120px;
  background: #F8F9FA;
}

.blog-page-title {
  font-size: 36px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 64px;
  letter-spacing: -0.5px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.blog-card {
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: none;
  border: none;
  box-shadow: none;
}

.blog-card-image {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              box-shadow 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-card:hover .blog-card-image {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.03),
              0 10px 10px -5px rgba(0, 0, 0, 0.01);
}

.blog-card-body {
  padding: 16px 4px 0;
}

.blog-card-date {
  font-size: 13px;
  color: #9CA3AF;
  font-weight: 500;
  margin-bottom: 8px;
}

.blog-card-title {
  font-size: 17px;
  font-weight: 700;
  color: #111827;
  line-height: 1.4;
  margin-bottom: 0;
  transition: color 0.3s ease;
}

.blog-card:hover .blog-card-title {
  color: #2563EB;
}

/* ---- Blog Detail Page ---- */
.blog-detail {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 0 80px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 40px;
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.3);
  text-underline-offset: 3px;
  transition: gap 0.3s, text-decoration-color 0.3s;
}
.back-link:hover {
  gap: 10px;
  text-decoration-color: var(--blue-dark);
}

.blog-detail-date {
  font-size: 13px;
  color: #9CA3AF;
  font-weight: 500;
  margin-bottom: 16px;
}

.blog-detail-title {
  font-size: 34px;
  font-weight: 700;
  color: #111827;
  line-height: 1.3;
  margin-bottom: 32px;
  letter-spacing: -0.3px;
}

.blog-detail-hero {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 40px;
}

.blog-detail-hero img {
  width: 100%;
  display: block;
  border-radius: 12px;
}

.blog-detail-content {
  font-size: 16px;
  color: #374151;
  line-height: 1.7;
}

.blog-detail-content p {
  margin-bottom: 24px;
}

.blog-detail-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: #111827;
  margin-top: 48px;
  margin-bottom: 16px;
}

.blog-detail-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: #111827;
  margin-top: 36px;
  margin-bottom: 12px;
}

.blog-detail-content strong {
  color: #111827;
  font-weight: 600;
}

.blog-detail-content code {
  background: #F3F4F6;
  color: #2563EB;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Inter', 'PingFang SC', sans-serif;
  font-size: 14px;
}

.blog-detail-content ul {
  margin-bottom: 24px;
  padding-left: 20px;
}

.blog-detail-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}

/* ---- CTA Banner ---- */
.blog-detail-cta {
  margin-top: 64px;
}

.blog-cta-banner {
  background: #EEF2F6;
  border-radius: 8px;
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.blog-cta-text {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
  flex: 1;
  min-width: 200px;
}

.blog-cta-text strong {
  color: #111827;
}

/* ---- Blog Sidebar (fixed left panel) ---- */
.blog-sidebar {
  display: none; /* 默认隐藏，桌面端 media query 显示 */
}

.blog-sidebar-back {
  display: block;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 0;
  transition: color 0.2s;
  text-decoration: none;
  white-space: nowrap;
}
.blog-sidebar-back:hover {
  color: var(--orange);
}

.blog-sidebar-divider {
  width: 40px;
  height: 1px;
  background: #E5E7EB;
  margin: 4px 0;
}

.blog-sidebar-text {
  display: block;
  font-size: 11px;
  color: #6B7280;
  line-height: 1.5;
  text-align: center;
}

.blog-sidebar-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--orange), #FB923C);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}
.blog-sidebar-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--orange-glow-strong);
}

/* ============================================================
   JOIN PAGE
   ============================================================ */
.join-section {
  min-height:70vh; display:flex; align-items:center; justify-content:center;
  padding:var(--section-pad) 0;
}
.join-card {
  max-width:520px; margin:0 auto; text-align:center;
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-xl); padding:64px 48px;
  box-shadow: var(--shadow-card);
}
.join-card h1 { font-size:26px; font-weight:800; margin-bottom:16px; color:var(--text); }
.join-card p { font-size:15px; color:var(--text-muted); line-height:1.8; margin-bottom:28px; }

/* ============================================================
   LOADING / SCAN
   ============================================================ */
.loading-scan { position:relative; overflow:hidden; }
.loading-scan::after {
  content:''; position:absolute; top:0; left:0; right:0;
  height:2px; background:var(--blue);
  animation:scanline 2s ease-in-out infinite;
}
@keyframes scanline {
  0%   { transform:translateY(-100%); opacity:0; }
  20%  { opacity:0.5; }
  80%  { opacity:0.5; }
  100% { transform:translateY(400%); opacity:0; }
}

.scan-text {
  color:var(--blue); font-family:var(--font-mono); font-size:14px;
  display:flex; align-items:center; gap:8px;
}
.scan-text .cursor {
  width:6px; height:14px; background:var(--blue);
  animation:blink 1s step-end infinite;
}
@keyframes blink {
  50% { opacity:0; }
}

/* ============================================================
   RESULT BADGE
   ============================================================ */
.result-badge {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(16,185,129,0.06); border:1px solid rgba(16,185,129,0.15);
  padding:8px 16px; border-radius:20px; font-size:13px; color:var(--green);
  font-weight:600; margin-bottom:16px;
}
.result-badge .dot { width:6px; height:6px; border-radius:50%; background:var(--green); animation:blink 2s infinite; }

/* ============================================================
   HIGHLIGHT
   ============================================================ */
.highlight-technical {
  color:var(--blue); font-weight:600;
  border-bottom:1px dashed rgba(67,133,245,0.3);
  padding-bottom:1px;
}

/* ============================================================
   TURNSTILE
   ============================================================ */
.cf-turnstile-wrapper { display:flex; justify-content:center; margin:16px 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-layout { grid-template-columns:1fr; gap:48px; }
  .hero-visual { order:-1; }
  .hero-screenshot { max-width:400px; }
  .feature-grid { grid-template-columns:repeat(2, 1fr); }
  .product-grid-asymmetric { grid-template-columns:1fr; }
  .product-card-hero { grid-row:auto; }
  .split-row { grid-template-columns:1fr; gap:40px; }
  .pain-grid { grid-template-columns:repeat(2, 1fr); }
  .pain-grid-4 { grid-template-columns:repeat(2, 1fr); }
  .download-steps { gap:40px; }
  .blog-grid { grid-template-columns:repeat(2, 1fr); gap:32px; }
}

@media (max-width: 768px) {
  :root { --section-pad:80px; }
  .container { padding:0 20px; }
  .hero h1 { font-size:28px; }
  .hero-desc { font-size:15px; }
  .hero-left { max-width:100%; }
  .hero-screenshot { max-width:100%; }
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-actions .btn { width:100%; }
  .section-title { font-size:24px; }
  .feature-grid { grid-template-columns:1fr; }
  .product-grid-asymmetric { grid-template-columns:1fr; }
  .pain-grid { grid-template-columns:1fr; }
  .pain-grid-4 { grid-template-columns:1fr; }
  .split-row { grid-template-columns:1fr; }
  .split-img img { height:auto; max-height:220px; }
  .compare-row { grid-template-columns:1fr; }
  .compare-header { display:none; }
  .nav-links { display:none; }
  .hamburger { display:flex; }
  .download-card { flex-direction:column; gap:16px; text-align:center; }
  .download-steps { gap:24px; }
  .footer-content { flex-direction:column; gap:16px; text-align:center; }
  .contact-info { flex-direction:column; align-items:center; }
  .conversion-banner { flex-direction:column; text-align:center; }
  .join-card { padding:40px 24px; }
  .product-card-hero { padding:32px 24px; }
  .pricing-card { padding:36px 24px; }
  .blog-grid { grid-template-columns:1fr; gap:32px; }
  .blog-page-title { font-size:28px; margin-bottom:48px; }
  .blog-detail-title { font-size:26px; }
  .blog-cta-banner { flex-direction:column; text-align:center; }
}

/* ============================================================
   PAGINATION — 极简静态分页导航
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}
.pagination a:hover {
  background: var(--blue-glow);
  border-color: var(--blue);
  color: var(--blue-dark);
}
.pagination .current {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  cursor: default;
}
.pagination .disabled {
  color: var(--text-dim);
  border-color: var(--border);
  cursor: default;
  pointer-events: none;
}
@media (max-width: 640px) {
  .pagination a,
  .pagination span {
    min-width: 36px;
    height: 36px;
    font-size: 13px;
    padding: 0 10px;
  }
}

/* ---- Desktop-only: fixed left sidebar ---- */
@media (min-width: 1025px) {
  .blog-sidebar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    position: fixed;
    left: max(16px, calc((100vw - 740px) / 2 - 170px));
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
    width: 130px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid #E5E7EB;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    padding: 16px 12px;
  }

  /* 隐藏文章内联的返回链接 */
  .back-link {
    display: none;
  }
}