/* ================================================================
   Fooshun Desk · 官网设计系统
   主色：#0068F8（科技蓝） / 辅色：#0088F8 / 深：#081B4A / 背景：#F5F7FB
   字体：Noto Sans SC（中） + Inter（英）
   ================================================================ */

:root {
  --fs-primary: #0068F8;
  --fs-primary-light: #0088F8;
  --fs-primary-dark: #003FB8;
  --fs-dark: #081B4A;
  --fs-dark-2: #0F2A6B;
  --fs-bg: #F5F7FB;
  --fs-bg-soft: #EAF1FE;
  --fs-text: #0B1B3A;
  --fs-text-muted: #5A6885;
  --fs-border: #E3E8F2;
  --fs-success: #10B981;
  --fs-warning: #F59E0B;
  --fs-accent: #FF7A18;
  --fs-gradient: linear-gradient(135deg, #0068F8 0%, #00A4FF 100%);
  --fs-gradient-dark: linear-gradient(135deg, #081B4A 0%, #0F2A6B 60%, #0068F8 100%);
  --fs-shadow-sm: 0 1px 2px rgba(8, 27, 74, 0.06);
  --fs-shadow: 0 6px 24px rgba(8, 27, 74, 0.08);
  --fs-shadow-lg: 0 18px 48px rgba(8, 27, 74, 0.14);
  --fs-radius: 14px;
  --fs-radius-lg: 22px;
}

* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--fs-text);
  background: #fff;
  line-height: 1.65;
}

/* ============ 通用组件 ============ */

.fs-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.fs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  transition: all .25s ease;
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.fs-btn-primary {
  background: var(--fs-gradient);
  color: #fff;
  box-shadow: 0 8px 20px rgba(0, 104, 248, 0.28);
}
.fs-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(0, 104, 248, 0.38); }

.fs-btn-ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(8px);
}
.fs-btn-ghost:hover { background: rgba(255,255,255,0.18); }

.fs-btn-outline {
  background: #fff;
  color: var(--fs-primary);
  border: 1.5px solid var(--fs-primary);
}
.fs-btn-outline:hover { background: var(--fs-bg-soft); }

.fs-btn-dark {
  background: var(--fs-dark);
  color: #fff;
}
.fs-btn-dark:hover { background: var(--fs-dark-2); transform: translateY(-1px); }

/* 章节标题 */
.fs-section { padding: 88px 0; }
.fs-section-tight { padding: 56px 0; }
.fs-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--fs-bg-soft);
  color: var(--fs-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.fs-h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--fs-text);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.fs-h2 .grad {
  background: var(--fs-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.fs-sub {
  font-size: 17px;
  color: var(--fs-text-muted);
  max-width: 720px;
}
.fs-section-head { text-align: center; margin-bottom: 56px; }
.fs-section-head .fs-sub { margin-left: auto; margin-right: auto; }

/* 卡片 */
.fs-card {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  padding: 28px;
  transition: all .3s ease;
}
.fs-card:hover {
  border-color: rgba(0, 104, 248, 0.35);
  box-shadow: var(--fs-shadow);
  transform: translateY(-4px);
}
.fs-card-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--fs-bg-soft);
  color: var(--fs-primary);
  font-size: 22px;
  margin-bottom: 18px;
}

/* ============ 顶部导航 ============ */
.fs-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--fs-border);
}
.fs-nav-inner {
  height: 68px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.fs-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fs-text); font-weight: 800; }
.fs-logo svg { width: 36px; height: 36px; }
.fs-logo .name { font-size: 18px; letter-spacing: -0.3px; }
.fs-logo .sub { font-size: 11px; color: var(--fs-text-muted); display: block; font-weight: 500; margin-top: -2px;}
.fs-nav-links { display: flex; gap: 4px; }
.fs-nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--fs-text);
  font-size: 14.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all .2s ease;
}
.fs-nav-links a:hover { background: var(--fs-bg-soft); color: var(--fs-primary); }
.fs-nav-links a.active { color: var(--fs-primary); background: var(--fs-bg-soft); }
.fs-nav-actions { display: flex; align-items: center; gap: 10px; }
.fs-lang-switch {
  border: 1px solid var(--fs-border);
  background: #fff;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--fs-text-muted);
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
}
.fs-lang-switch:hover { color: var(--fs-primary); border-color: var(--fs-primary); }
.fs-mobile-toggle { display: none; }

@media (max-width: 960px) {
  .fs-nav-links { display: none; }
  .fs-nav-actions .fs-btn-primary { display: none; }
  .fs-mobile-toggle {
    display: inline-flex; width: 40px; height: 40px;
    border-radius: 8px; border: 1px solid var(--fs-border);
    background: #fff; align-items: center; justify-content: center;
    cursor: pointer;
  }
}

.fs-mobile-menu {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--fs-border);
  padding: 14px 0;
}
.fs-mobile-menu.open { display: block; }
.fs-mobile-menu a {
  display: block; padding: 12px 24px;
  color: var(--fs-text); text-decoration: none; font-weight: 500;
}
.fs-mobile-menu a:hover { background: var(--fs-bg-soft); color: var(--fs-primary); }

/* ============ Hero ============ */
.fs-hero {
  position: relative;
  background: var(--fs-gradient-dark);
  color: #fff;
  padding: 96px 0 120px;
  overflow: hidden;
}
.fs-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 18% 28%, rgba(0, 164, 255, 0.35) 0, transparent 40%),
    radial-gradient(circle at 82% 70%, rgba(0, 104, 248, 0.4) 0, transparent 38%);
  pointer-events: none;
}
.fs-hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
  pointer-events: none;
}
.fs-hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 960px) { .fs-hero-inner { grid-template-columns: 1fr; gap: 40px; } }

.fs-hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.fs-hero h1 .grad {
  background: linear-gradient(135deg, #fff 0%, #9FD3FF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.fs-hero p.lead {
  font-size: 18px;
  color: rgba(255,255,255,0.78);
  max-width: 560px;
  margin-bottom: 32px;
}
.fs-hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.fs-hero-tags span {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  font-size: 13px;
  color: rgba(255,255,255,0.9);
}
.fs-hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.fs-hero-meta { display: flex; gap: 28px; margin-top: 32px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.12); }
.fs-hero-meta div .num { font-size: 26px; font-weight: 800; color: #fff; }
.fs-hero-meta div .label { font-size: 13px; color: rgba(255,255,255,0.65); }

/* Hero 右侧仪表板预览 */
.fs-hero-visual {
  position: relative;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: 18px;
  backdrop-filter: blur(20px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}
.fs-hero-visual .dots { display: flex; gap: 6px; margin-bottom: 14px; }
.fs-hero-visual .dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.fs-hero-visual .dots span:first-child { background: #FF5F57; }
.fs-hero-visual .dots span:nth-child(2) { background: #FEBC2E; }
.fs-hero-visual .dots span:nth-child(3) { background: #28C840; }

.fs-stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 14px; }
.fs-stat-card { background: rgba(255,255,255,0.06); border-radius: 10px; padding: 12px; }
.fs-stat-card .v { color: #fff; font-weight: 700; font-size: 18px; }
.fs-stat-card .l { color: rgba(255,255,255,0.55); font-size: 11px; margin-top: 2px;}
.fs-stat-card .v.up { color: #6BE3A2; }

.fs-mini-chart {
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
  height: 110px;
  margin-bottom: 10px;
  padding: 12px;
  position: relative;
  overflow: hidden;
}
.fs-mini-chart .label {
  position:absolute; top:10px; left:12px;
  color: rgba(255,255,255,0.6); font-size: 11px;
}
.fs-mini-chart svg { width: 100%; height: 80px; margin-top: 16px; }

.fs-channel-row { display: flex; gap: 8px; flex-wrap: wrap; }
.fs-channel-row span {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px; border-radius: 8px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9); font-size: 12px;
}
.fs-channel-row i { color: #6CC1FF; }

/* ============ Pain points ============ */
.fs-pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 960px) { .fs-pain-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .fs-pain-grid { grid-template-columns: 1fr; } }
.fs-pain-card {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  padding: 24px;
}
.fs-pain-card .ico { color: #F87171; font-size: 22px; margin-bottom: 12px; }
.fs-pain-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.fs-pain-card p { font-size: 14px; color: var(--fs-text-muted); }

/* ============ Capabilities ============ */
.fs-cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 960px) { .fs-cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .fs-cap-grid { grid-template-columns: 1fr; } }

.fs-cap-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.fs-cap-card p { font-size: 14.5px; color: var(--fs-text-muted); line-height: 1.65; }
.fs-cap-card ul { margin-top: 12px; padding-left: 0; list-style: none; }
.fs-cap-card ul li {
  position: relative; padding-left: 20px;
  font-size: 13.5px; color: var(--fs-text); margin-bottom: 6px;
}
.fs-cap-card ul li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--fs-primary); font-weight: 800;
}

/* ============ 架构（三级后台） ============ */
.fs-arch-section { background: var(--fs-bg); }
.fs-arch-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .fs-arch-grid { grid-template-columns: 1fr; } }
.fs-arch-card {
  background: #fff;
  border-radius: var(--fs-radius-lg);
  padding: 28px;
  border: 1px solid var(--fs-border);
  position: relative;
  overflow: hidden;
}
.fs-arch-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--fs-gradient);
}
.fs-arch-card .tier {
  display: inline-block; padding: 4px 10px;
  background: var(--fs-bg-soft); color: var(--fs-primary);
  font-size: 12px; font-weight: 700; border-radius: 6px; margin-bottom: 12px;
}
.fs-arch-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.fs-arch-card .users { font-size: 13px; color: var(--fs-text-muted); margin-bottom: 16px; }
.fs-arch-card ul { list-style: none; padding: 0; }
.fs-arch-card ul li {
  padding: 9px 0; border-bottom: 1px dashed var(--fs-border);
  font-size: 14px; color: var(--fs-text);
  display: flex; align-items: center; gap: 8px;
}
.fs-arch-card ul li:last-child { border-bottom: none; }
.fs-arch-card ul li i { color: var(--fs-primary); width: 14px; }

/* ============ 渠道矩阵 ============ */
.fs-channel-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
@media (max-width: 960px) { .fs-channel-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .fs-channel-grid { grid-template-columns: repeat(2, 1fr); } }
.fs-channel-card {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  padding: 22px 16px;
  text-align: center;
  transition: all .25s ease;
}
.fs-channel-card:hover { transform: translateY(-3px); box-shadow: var(--fs-shadow); border-color: var(--fs-primary); }
.fs-channel-card .ic {
  width: 48px; height: 48px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; margin-bottom: 10px;
}
.fs-channel-card .name { font-weight: 700; font-size: 14px; }
.fs-channel-card .desc { font-size: 12px; color: var(--fs-text-muted); margin-top: 2px;}

.ch-whatsapp { background: #25D366; }
.ch-telegram { background: #26A5E4; }
.ch-line { background: #00C300; }
.ch-facebook { background: #1877F2; }
.ch-instagram { background: linear-gradient(135deg, #FEDA77, #F58529, #DD2A7B, #8134AF); }
.ch-zalo { background: #0068FF; }

/* ============ Pricing ============ */
.fs-pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
@media (max-width: 900px) { .fs-pricing-grid { grid-template-columns: 1fr; } }
.fs-price-card {
  background: #fff; border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius-lg);
  padding: 32px; display: flex; flex-direction: column;
}
.fs-price-card.featured {
  background: var(--fs-gradient-dark);
  color: #fff;
  border: none;
  transform: scale(1.03);
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 104, 248, 0.3);
}
.fs-price-card.featured .price-name,
.fs-price-card.featured .price-num,
.fs-price-card.featured .price-desc { color: #fff; }
.fs-price-card.featured ul li { color: rgba(255,255,255,0.92); }
.fs-price-card.featured ul li i { color: #6BE3A2; }
.fs-price-card .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: #FF7A18; color: #fff; padding: 4px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
}
.price-name { font-size: 14px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--fs-primary); margin-bottom: 8px; }
.price-num { font-size: 34px; font-weight: 800; color: var(--fs-text); margin-bottom: 4px; }
.price-num small { font-size: 14px; font-weight: 500; color: var(--fs-text-muted); }
.price-desc { font-size: 14px; color: var(--fs-text-muted); margin-bottom: 22px; }
.fs-price-card ul { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.fs-price-card ul li {
  padding: 8px 0; font-size: 14px; display: flex; align-items: flex-start; gap: 10px;
}
.fs-price-card ul li i { color: var(--fs-primary); margin-top: 4px; }

/* ============ Footer ============ */
.fs-footer {
  background: var(--fs-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 28px;
}
.fs-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 900px) { .fs-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 560px) { .fs-footer-grid { grid-template-columns: 1fr; } }
.fs-footer h5 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.5px; }
.fs-footer ul { list-style: none; padding: 0; }
.fs-footer ul li { margin-bottom: 10px; }
.fs-footer a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 14px; }
.fs-footer a:hover { color: #fff; }
.fs-footer-brand p { font-size: 14px; max-width: 320px; margin: 14px 0 18px; }
.fs-footer-social { display: flex; gap: 10px; }
.fs-footer-social a {
  width: 36px; height: 36px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06);
}
.fs-footer-social a:hover { background: var(--fs-primary); }
.fs-footer-bottom {
  padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 13px; color: rgba(255,255,255,0.5);
}

/* ============ 通用：内页 banner / CTA ============ */
.fs-page-hero {
  background: var(--fs-gradient-dark);
  color: #fff;
  padding: 72px 0 80px;
  position: relative; overflow: hidden;
}
.fs-page-hero::before {
  content:''; position: absolute; inset:0;
  background-image:
    radial-gradient(circle at 80% 30%, rgba(0,164,255,0.3) 0, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(0,104,248,0.35) 0, transparent 40%);
}
.fs-page-hero .fs-container { position: relative; z-index: 2; }
.fs-page-hero h1 {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800; letter-spacing: -0.8px; margin-bottom: 14px;
}
.fs-page-hero p { font-size: 17px; color: rgba(255,255,255,0.78); max-width: 720px; }
.fs-breadcrumb {
  font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 16px;
}
.fs-breadcrumb a { color: rgba(255,255,255,0.85); text-decoration: none; }
.fs-breadcrumb i { font-size: 10px; margin: 0 8px; opacity: 0.5; }

.fs-cta-block {
  background: var(--fs-gradient-dark);
  border-radius: var(--fs-radius-lg);
  color: #fff;
  padding: 56px 48px;
  position: relative; overflow: hidden;
  text-align: center;
}
.fs-cta-block::before {
  content:''; position: absolute; inset:0;
  background-image: radial-gradient(circle at 50% 0%, rgba(0,164,255,0.35) 0, transparent 50%);
}
.fs-cta-block > * { position: relative; z-index: 2; }
.fs-cta-block h3 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.fs-cta-block p { font-size: 16px; color: rgba(255,255,255,0.78); margin-bottom: 28px; max-width: 600px; margin-left:auto; margin-right:auto;}

/* ============ 表单 ============ */
.fs-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fs-form .full { grid-column: 1 / -1; }
@media (max-width: 600px) { .fs-form { grid-template-columns: 1fr; } }
.fs-field { display: flex; flex-direction: column; gap: 6px; }
.fs-field label { font-size: 13px; font-weight: 600; color: var(--fs-text); }
.fs-field label .req { color: #EF4444; }
.fs-field input, .fs-field select, .fs-field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--fs-border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--fs-text);
  transition: all .2s;
}
.fs-field input:focus, .fs-field select:focus, .fs-field textarea:focus {
  outline: none; border-color: var(--fs-primary);
  box-shadow: 0 0 0 4px rgba(0, 104, 248, 0.12);
}
.fs-field textarea { resize: vertical; min-height: 100px; }
.fs-checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.fs-checkbox-group label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border: 1px solid var(--fs-border);
  border-radius: 8px; font-size: 13px; cursor: pointer;
  background: #fff;
}
.fs-checkbox-group label input { accent-color: var(--fs-primary); }
.fs-checkbox-group label.on {
  border-color: var(--fs-primary); background: var(--fs-bg-soft); color: var(--fs-primary); font-weight: 600;
}

.fs-form-status {
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 14px;
  display: none;
}
.fs-form-status.show { display: block; }
.fs-form-status.success { background: #ECFDF5; color: #047857; border: 1px solid #6EE7B7; }
.fs-form-status.error { background: #FEF2F2; color: #B91C1C; border: 1px solid #FCA5A5; }

/* ============ Tables / Compare ============ */
.fs-compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: #fff;
  border-radius: var(--fs-radius);
  overflow: hidden;
  border: 1px solid var(--fs-border);
}
.fs-compare-table th, .fs-compare-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--fs-border);
  font-size: 14.5px;
}
.fs-compare-table th { background: var(--fs-bg); font-weight: 700; }
.fs-compare-table tr:last-child td { border-bottom: none; }
.fs-compare-table .yes { color: var(--fs-success); font-weight: 700; }
.fs-compare-table .no { color: #94A3B8; }

/* ============ Steps / Flow ============ */
.fs-flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; position: relative; }
@media (max-width: 900px) { .fs-flow { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 540px) { .fs-flow { grid-template-columns: repeat(2, 1fr); } }
.fs-flow-step {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  padding: 18px 14px;
  text-align: center;
  position: relative;
}
.fs-flow-step .n {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--fs-gradient); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px; margin-bottom: 10px;
}
.fs-flow-step h5 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.fs-flow-step p { font-size: 12px; color: var(--fs-text-muted); }

/* ============ FAQ ============ */
.fs-faq { max-width: 820px; margin: 0 auto; }
.fs-faq details {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: all .2s;
}
.fs-faq details[open] { border-color: var(--fs-primary); box-shadow: var(--fs-shadow-sm); }
.fs-faq summary {
  font-size: 16px; font-weight: 600; cursor: pointer;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.fs-faq summary::-webkit-details-marker { display: none; }
.fs-faq summary::after {
  content: '+'; font-size: 22px; color: var(--fs-primary); font-weight: 300;
  transition: transform .2s;
}
.fs-faq details[open] summary::after { content: '−'; }
.fs-faq p { margin-top: 12px; color: var(--fs-text-muted); font-size: 14.5px; line-height: 1.7; }

/* ============ 案例卡片 ============ */
.fs-case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .fs-case-grid { grid-template-columns: 1fr; } }
.fs-case-card {
  background: #fff;
  border: 1px solid var(--fs-border);
  border-radius: var(--fs-radius);
  overflow: hidden;
  transition: all .3s;
}
.fs-case-card:hover { transform: translateY(-4px); box-shadow: var(--fs-shadow-lg); }
.fs-case-card .cover {
  height: 160px;
  background: var(--fs-gradient);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.9); font-size: 36px;
}
.fs-case-card .cover::after {
  content:''; position:absolute; inset:0;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
.fs-case-card .body { padding: 22px; }
.fs-case-card .ind { font-size: 12px; color: var(--fs-primary); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.fs-case-card h3 { font-size: 18px; font-weight: 700; margin: 6px 0 10px; }
.fs-case-card p { font-size: 14px; color: var(--fs-text-muted); }
.fs-case-card .metrics { display: flex; gap: 18px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--fs-border); }
.fs-case-card .metrics div .v { font-weight: 800; font-size: 18px; color: var(--fs-primary); }
.fs-case-card .metrics div .l { font-size: 12px; color: var(--fs-text-muted); }

/* ============ Reveal on scroll ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: all .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ============ Solutions ============ */
.fs-sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 800px) { .fs-sol-grid { grid-template-columns: 1fr; } }
.fs-sol-card {
  border-radius: var(--fs-radius-lg);
  padding: 32px;
  color: #fff;
  position: relative; overflow: hidden;
  min-height: 280px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.fs-sol-card .ic { font-size: 36px; opacity: 0.9; margin-bottom: 16px; }
.fs-sol-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.fs-sol-card p { font-size: 15px; opacity: 0.85; margin-bottom: 18px; }
.fs-sol-card .tags span {
  display: inline-block; padding: 4px 10px; border-radius: 6px;
  background: rgba(255,255,255,0.15); font-size: 12px; margin-right: 6px; margin-bottom: 6px;
}
.fs-sol-1 { background: linear-gradient(135deg, #0068F8 0%, #00A4FF 100%); }
.fs-sol-2 { background: linear-gradient(135deg, #6E2BF0 0%, #B14CF7 100%); }
.fs-sol-3 { background: linear-gradient(135deg, #FF7A18 0%, #FFB52E 100%); }
.fs-sol-4 { background: linear-gradient(135deg, #10B981 0%, #34D399 100%); }