/* ============ ARIFU Website Shared Styles ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #0B4F6C;
  --primary-dark: #073B52;
  --primary-light: #E8F0F5;
  --deep: #0A1F3C;
  --deep-2: #142B4D;
  --cyan: #00A6A6;
  --cyan-light: #E0F5F5;
  --green: #2E9E5B;
  --green-light: #EAF5EF;
  --amber: #E8A23D;
  --amber-light: #FDF3E5;
  --red: #D64545;
  --bg: #F5F8FA;
  --surface: #FFFFFF;
  --line: #E3E9ED;
  --line-light: #F1F5F9;
  --text: #1A2B35;
  --muted: #5A6B74;
  --muted-2: #8A99A1;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'Helvetica Neue', 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--surface);
  color: var(--text);
  font-size: 18px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.22; color: var(--deep); }
h1 { font-size: clamp(34px, 5.2vw, 64px); font-weight: 700; line-height: 1.22; letter-spacing: -0.04em; }
h2 { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.22; letter-spacing: -0.02em; }
h3 { font-size: clamp(20px, 2vw, 26px); line-height: 1.3; letter-spacing: -0.01em; }
p { font-size: 18px; line-height: 1.4; color: var(--text); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1328px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }

/* ============ Top Nav ============ */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-light);
  z-index: 100;
  transition: all 0.3s;
}
.topbar.scrolled { box-shadow: 0 4px 24px rgba(10,31,60,0.06); }
.nav {
  display: flex; align-items: center;
  justify-content: space-between;
  gap: 14px;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo-img {
  height: 40px;
  width: auto;
  display: block;
}
.foot-brand .brand-logo-img { height: 48px; }
.brand-text { font-weight: 700; font-size: 19px; letter-spacing: 1px; color: var(--deep); }
.brand-sub { font-size: 10px; color: var(--muted); letter-spacing: 2px; margin-top: -2px; }

.nav-menu { display: flex; gap: 2px; align-items: center; }
.nav-link {
  padding: 9px 11px; font-size: 14px; color: var(--text);
  border-radius: 6px; cursor: pointer; transition: all 0.15s;
  font-weight: 500; white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: var(--primary-light); }

.nav-cta {
  background: var(--green); color: #fff;
  padding: 11px 22px; border-radius: 100px;
  font-size: 14px; font-weight: 700;
  cursor: pointer; transition: all 0.15s;
  letter-spacing: .01em;
  flex-shrink: 0;
  white-space: nowrap;
}
.nav-cta:hover { background: #2a8a4f; transform: translateY(-1px); }

/* 导航栏电话（页头固定可见） */
.nav-phone {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 700; color: var(--deep);
  text-decoration: none; padding: 9px 10px; border-radius: 6px;
  transition: all 0.15s; white-space: nowrap;
}
.nav-phone:hover { background: var(--primary-light); color: var(--primary-dark); }

/* 语言切换器 */
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; padding: 0 8px;
  font-size: 13px; font-weight: 700; color: var(--deep);
  text-decoration: none; border: 1px solid var(--line); border-radius: 6px;
  transition: all 0.15s; white-space: nowrap; letter-spacing: .02em;
}
.lang-switch:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============ Nav Dropdown ============ */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-menu {
  position: absolute; top: 100%; left: 0; min-width: 220px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 16px 40px rgba(10,31,60,0.12); padding: 10px 0;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all 0.2s ease; z-index: 1000;
}
.nav-dropdown:hover .nav-dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown-menu a {
  display: block; padding: 12px 20px; font-size: 14px; color: var(--text);
  text-decoration: none; transition: all 0.15s; border-left: 3px solid transparent;
}
.nav-dropdown-menu a:hover { color: var(--primary); background: var(--primary-light); border-left-color: var(--primary); }
/* Nested dropdown menus (3rd level+) - open to the right */
.nav-dropdown-menu .nav-dropdown { position: relative; }
.nav-dropdown-menu .nav-dropdown-menu {
  top: 0; left: 100%; margin-top: -8px;
  transform: translateX(-8px);
}
.nav-dropdown-menu .nav-dropdown:hover .nav-dropdown-menu {
  transform: translateX(0);
}

/* ============ Sub-page Hero ============ */
.sub-hero {
  padding: 120px 0 60px;
  background:
    radial-gradient(circle at 80% 20%, rgba(0,180,216,0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(1,77,178,0.10) 0%, transparent 50%),
    linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 100%);
  position: relative; overflow: hidden;
}
.sub-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(1,77,178,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1,77,178,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.sub-hero-inner { position: relative; z-index: 1; text-align: center; max-width: 760px; margin: 0 auto; }
.breadcrumb {
  display: flex; justify-content: center; gap: 8px;
  font-size: 13px; color: var(--muted); margin-bottom: 20px;
}
.breadcrumb a:hover { color: var(--primary); }
.sub-hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; background: var(--cyan-light);
  color: var(--cyan); border-radius: 100px;
  font-size: 12px; font-weight: 600;
  margin-bottom: 20px;
}
.sub-hero h1 {
  font-size: 42px; font-weight: 800;
  color: var(--deep); line-height: 1.2;
  letter-spacing: -1px; margin-bottom: 16px;
}
.sub-hero h1 .accent {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.sub-hero p.lead {
  font-size: 17px; color: var(--muted);
  max-width: 600px; margin: 0 auto;
  line-height: 1.7;
}

/* ============ Hero (homepage) ============ */
.hero {
  padding: 130px 0 80px;
  background:
    radial-gradient(circle at 80% 20%, rgba(0,180,216,0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(1,77,178,0.10) 0%, transparent 50%),
    linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(1,77,178,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1,77,178,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.2fr 1fr;
  gap: 60px; align-items: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; background: var(--cyan-light);
  color: var(--cyan); border-radius: 100px;
  font-size: 12px; font-weight: 600;
  margin-bottom: 20px;
}
.hero-tag::before {
  content: ''; width: 6px; height: 6px;
  background: var(--cyan); border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(0,180,216,0.25);
}
.hero h1 {
  font-size: 48px; font-weight: 800;
  color: var(--deep); line-height: 1.15;
  letter-spacing: -1px; margin-bottom: 20px;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: 17px; color: var(--muted);
  margin-bottom: 32px; max-width: 540px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--primary); color: #fff;
  padding: 13px 26px; border-radius: 8px;
  font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 8px;
  box-shadow: 0 6px 20px rgba(1,77,178,0.25);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(1,77,178,0.35); }
.btn-ghost {
  background: transparent; color: var(--deep);
  padding: 13px 26px; border-radius: 8px;
  font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* Hero visual cards */
.hero-visual { position: relative; height: 420px; }
.hero-card {
  position: absolute; background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 20px 50px rgba(10,31,60,0.10);
  padding: 20px;
}
.hero-card-1 { top: 0; right: 0; width: 320px; transform: rotate(-2deg); }
.hero-card-2 { bottom: 30px; left: 0; width: 280px; transform: rotate(2deg); }
.hero-card-3 { top: 140px; right: 80px; width: 200px; background: var(--deep); color: #fff; border: none; }
.hero-card .hc-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.hero-card-3 .hc-label { color: var(--cyan); }
.hero-card .hc-value { font-size: 32px; font-weight: 800; color: var(--deep); margin-top: 4px; letter-spacing: -1px; }
.hero-card-3 .hc-value { color: #fff; }
.hero-card .hc-value .unit { font-size: 14px; color: var(--muted); font-weight: 500; margin-left: 4px; }
.hero-card-3 .hc-value .unit { color: var(--cyan); }
.hero-card .hc-foot { font-size: 12px; color: var(--muted); margin-top: 6px; }
.hero-card-3 .hc-foot { color: #94A3B8; }
.hero-card .hc-bar { width: 100%; height: 4px; background: var(--line-light); border-radius: 2px; margin-top: 10px; overflow: hidden; }
.hero-card .hc-bar > span { display: block; height: 100%; background: var(--primary); }
.hero-card-3 .hc-bar > span { background: var(--cyan); }

/* ============ Stats Bar ============ */
.stats { background: var(--deep); color: #fff; padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; }
.stat-num {
  font-size: 38px; font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent; letter-spacing: -1px;
}
.stat-num .unit { font-size: 16px; color: var(--cyan); font-weight: 500; margin-left: 4px; }
.stat-label { font-size: 13px; color: #94A3B8; margin-top: 6px; letter-spacing: 0.5px; }

/* ============ Sections ============ */
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block; padding: 6px 16px;
  background: var(--primary-light); color: var(--primary);
  border-radius: 100px; font-size: 13px;
  font-weight: 700; letter-spacing: 1.2px;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(28px, 3.2vw, 40px); font-weight: 700;
  color: var(--deep); line-height: 1.22;
  letter-spacing: -0.02em;
}
.section-sub { font-size: 18px; color: var(--muted); margin-top: 16px; line-height: 1.5; }

/* ============ Tech Evolution ============ */
.evolution { background: var(--bg); }
.evo-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.evo-track::before {
  content: ''; position: absolute;
  top: 32px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, var(--muted-2) 0%, var(--primary) 100%);
}
.evo-item { text-align: center; position: relative; padding: 0 8px; }
.evo-dot {
  width: 16px; height: 16px;
  background: var(--surface);
  border: 3px solid var(--muted-2);
  border-radius: 50%;
  margin: 24px auto 16px;
  position: relative; z-index: 1;
}
.evo-item.active .evo-dot {
  border-color: var(--primary); background: var(--primary);
  box-shadow: 0 0 0 6px rgba(1,77,178,0.18);
}
.evo-year { font-size: 13px; color: var(--muted); font-weight: 600; }
.evo-name { font-size: 18px; font-weight: 700; color: var(--deep); margin-top: 4px; }
.evo-item.active .evo-name { color: var(--primary); }
.evo-desc { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.55; }

/* ============ Innovations ============ */
.innov-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.innov-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 24px;
  transition: all 0.25s;
  position: relative; overflow: hidden;
}
.innov-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--primary);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.innov-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(10,31,60,0.08); border-color: var(--primary-light); }
.innov-card:hover::before { transform: scaleX(1); }
.innov-num { font-size: 13px; font-weight: 700; color: var(--primary); letter-spacing: 1px; margin-bottom: 14px; }
.innov-icon {
  width: 44px; height: 44px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: var(--primary);
  margin-bottom: 18px;
}
.innov-title { font-size: 18px; font-weight: 700; color: var(--deep); margin-bottom: 10px; }
.innov-desc { font-size: 13px; color: var(--muted); line-height: 1.65; }
.innov-meta { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--primary); font-weight: 600; }

/* ============ Solutions ============ */
.solutions { background: var(--bg); }
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.sol-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  display: grid; grid-template-columns: 64px 1fr;
  gap: 20px; align-items: start;
  transition: all 0.25s;
}
.sol-card:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(10,31,60,0.08); }
.sol-icon {
  width: 64px; height: 64px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
}
.sol-icon.c1 { background: linear-gradient(135deg, #014DB2, #00B4D8); color: #fff; }
.sol-icon.c2 { background: linear-gradient(135deg, #0D8050, #14B886); color: #fff; }
.sol-icon.c3 { background: linear-gradient(135deg, #F2A516, #F8C257); color: #fff; }
.sol-icon.c4 { background: linear-gradient(135deg, #7E22CE, #A855F7); color: #fff; }
.sol-title { font-size: 18px; font-weight: 700; color: var(--deep); margin-bottom: 8px; }
.sol-desc { font-size: 13px; color: var(--muted); line-height: 1.7; }
.sol-meta { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }
.sol-tag { font-size: 11px; padding: 3px 8px; background: var(--bg); color: var(--muted); border-radius: 4px; font-weight: 500; }

/* ============ Cases ============ */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(10,31,60,0.10); }
.case-banner {
  height: 140px;
  background: linear-gradient(135deg, var(--deep), var(--deep-2));
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.case-banner::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(0,180,216,0.3) 0%, transparent 40%),
    radial-gradient(circle at 70% 50%, rgba(1,77,178,0.4) 0%, transparent 40%);
}
.case-banner-text { position: relative; z-index: 1; color: #fff; text-align: center; }
.case-banner-text .num { font-size: 32px; font-weight: 800; letter-spacing: -1px; }
.case-banner-text .lbl { font-size: 11px; color: var(--cyan); letter-spacing: 2px; text-transform: uppercase; }
.case-body { padding: 24px; }
.case-tag {
  display: inline-block; padding: 3px 10px;
  background: var(--green-light); color: var(--green);
  border-radius: 100px; font-size: 11px;
  font-weight: 600; margin-bottom: 12px;
}
.case-title { font-size: 17px; font-weight: 700; color: var(--deep); margin-bottom: 8px; }
.case-meta { font-size: 13px; color: var(--muted); margin-bottom: 16px; line-height: 1.6; }
.case-data {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; padding-top: 16px;
  border-top: 1px solid var(--line-light);
}
.case-data .cd-num { font-size: 20px; font-weight: 700; color: var(--primary); }
.case-data .cd-lbl { font-size: 11px; color: var(--muted); margin-top: 2px; }

/* ============ Comparison ============ */
.comparison { background: var(--deep); color: #fff; }
.comparison .section-title { color: #fff; }
.comparison .section-sub { color: #94A3B8; }
.comp-table {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 12px;
  overflow: hidden;
}
.comp-row {
  display: grid; grid-template-columns: 1.4fr repeat(4, 1fr);
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: center; font-size: 14px;
}
.comp-row:last-child { border-bottom: none; }
.comp-row.head {
  background: rgba(255,255,255,0.04);
  font-weight: 700; font-size: 13px;
  color: #94A3B8;
  text-transform: uppercase; letter-spacing: 1px;
}
.comp-row.head .col-arfu { color: var(--cyan); }
.comp-row .col-name { color: #fff; font-weight: 500; }
.comp-row.head .col-name { color: #94A3B8; font-weight: 700; }
.comp-row .col { text-align: center; color: #CBD5E1; }
.comp-row .col-arfu { color: var(--cyan); font-weight: 700; background: rgba(0,180,216,0.08); }
.comp-row.head .col-arfu { background: rgba(0,180,216,0.15); }

/* ============ About ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: 32px; font-weight: 800; color: var(--deep); margin-bottom: 18px; line-height: 1.25; letter-spacing: -0.5px; }
.about-text p { font-size: 15px; color: var(--muted); line-height: 1.8; margin-bottom: 14px; }
.about-credentials { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.cred-item { display: flex; gap: 12px; align-items: start; padding: 14px; background: var(--bg); border-radius: 8px; }
.cred-icon {
  width: 32px; height: 32px;
  background: var(--primary-light); color: var(--primary);
  border-radius: 6px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
}
.cred-title { font-size: 13px; font-weight: 600; color: var(--deep); }
.cred-desc { font-size: 12px; color: var(--muted); margin-top: 2px; line-height: 1.5; }
.about-visual {
  background: linear-gradient(135deg, var(--primary-light), var(--cyan-light));
  border-radius: 16px; padding: 36px;
  position: relative;
}
.founder-card {
  background: var(--surface); border-radius: 12px;
  padding: 28px; box-shadow: 0 10px 30px rgba(10,31,60,0.08);
}
.founder-head { display: flex; gap: 16px; align-items: center; margin-bottom: 18px; }
.founder-avatar {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 22px;
}
.founder-name { font-size: 18px; font-weight: 700; color: var(--deep); }
.founder-role { font-size: 13px; color: var(--primary); font-weight: 600; margin-top: 2px; }
.founder-edu { font-size: 12px; color: var(--muted); margin-top: 2px; }
.founder-bio { font-size: 13px; color: var(--muted); line-height: 1.7; margin-bottom: 16px; }
.founder-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.founder-tag { font-size: 11px; padding: 4px 10px; background: var(--bg); color: var(--deep); border-radius: 4px; font-weight: 500; }

/* ============ CTA ============ */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; text-align: center;
  padding: 70px 0;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0,180,216,0.25) 0%, transparent 40%),
    radial-gradient(circle at 80% 50%, rgba(255,255,255,0.08) 0%, transparent 40%);
}
.cta-inner { position: relative; z-index: 1; }
.cta-section h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; letter-spacing: -0.5px; }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 28px; max-width: 540px; margin-left: auto; margin-right: auto; }
.btn-white {
  background: #fff; color: var(--primary);
  padding: 14px 32px; border-radius: 8px;
  font-size: 15px; font-weight: 700;
  cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,0.25); }

/* ============ Footer ============ */
footer { background: var(--deep); color: #94A3B8; padding: 60px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.foot-brand .brand-text { color: #fff; }
.foot-brand p { font-size: 13px; margin-top: 14px; line-height: 1.7; max-width: 320px; }
.foot-col h4 { color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 14px; letter-spacing: 1px; text-transform: uppercase; }
.foot-col a { display: block; font-size: 13px; color: #94A3B8; padding: 5px 0; transition: color 0.15s; }
.foot-col a:hover { color: var(--cyan); }
.foot-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; font-size: 12px; }

/* ============ Inner Page: Tech Detail ============ */
.tech-detail { background: var(--bg); }
.tech-detail-item {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: center;
  margin-bottom: 60px;
}
.tech-detail-item:last-child { margin-bottom: 0; }
.tech-detail-item:nth-child(even) .tdi-visual { order: -1; }
.tdi-num {
  font-size: 64px; font-weight: 800;
  color: var(--primary-light);
  line-height: 1; margin-bottom: 8px;
}
.tdi-title { font-size: 24px; font-weight: 700; color: var(--deep); margin-bottom: 12px; }
.tdi-desc { font-size: 14px; color: var(--muted); line-height: 1.8; margin-bottom: 20px; }
.tdi-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tdi-spec {
  padding: 12px 16px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px;
}
.tdi-spec .lbl { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.tdi-spec .val { font-size: 18px; font-weight: 700; color: var(--primary); margin-top: 4px; }
.tdi-visual {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 32px;
  box-shadow: 0 10px 30px rgba(10,31,60,0.06);
}
.tdi-visual .vbox {
  display: flex; flex-direction: column; gap: 14px;
}
.vbox-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0; border-bottom: 1px dashed var(--line);
}
.vbox-row:last-child { border-bottom: none; }
.vbox-row .vk { font-size: 13px; color: var(--muted); }
.vbox-row .vv { font-size: 14px; font-weight: 600; color: var(--deep); }

/* Spec Table */
.spec-table-wrap {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; overflow: hidden;
}
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th {
  background: var(--bg); padding: 14px 20px;
  font-size: 13px; color: var(--deep); font-weight: 700;
  text-align: left; border-bottom: 1px solid var(--line);
}
.spec-table td {
  padding: 14px 20px; font-size: 14px; color: var(--deep);
  border-bottom: 1px solid var(--line-light);
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table .spec-key { color: var(--muted); font-weight: 500; }
.spec-table .spec-val { font-weight: 600; }

/* ============ Inner Page: Timeline ============ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute;
  left: 11px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(180deg, var(--primary), var(--cyan));
}
.tl-item { position: relative; margin-bottom: 32px; }
.tl-item:last-child { margin-bottom: 0; }
.tl-dot {
  position: absolute; left: -32px; top: 4px;
  width: 24px; height: 24px;
  background: var(--surface); border: 3px solid var(--primary);
  border-radius: 50%;
}
.tl-year { font-size: 14px; font-weight: 700; color: var(--primary); }
.tl-title { font-size: 17px; font-weight: 600; color: var(--deep); margin-top: 4px; }
.tl-desc { font-size: 14px; color: var(--muted); margin-top: 6px; line-height: 1.6; }

/* ============ Inner Page: Contact Form ============ */
.contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; }
.contact-form {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 32px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--deep); margin-bottom: 6px;
}
.form-group label .req { color: var(--red); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; color: var(--deep);
  background: var(--bg);
  font-family: inherit;
  transition: all 0.15s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--primary);
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(1,77,178,0.1);
}
.form-textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-hint { font-size: 12px; color: var(--muted); margin-top: 4px; }

.contact-info { display: flex; flex-direction: column; gap: 16px; }
.info-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 24px;
}
.info-card .ic-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 14px;
}
.info-card .ic-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.info-card .ic-value { font-size: 16px; font-weight: 600; color: var(--deep); margin-top: 4px; }
.info-card .ic-extra { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* Industry selector cards */
.industry-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 20px; }
.industry-card {
  border: 1px solid var(--line); border-radius: 8px;
  padding: 16px; cursor: pointer; transition: all 0.2s;
  background: var(--surface);
}
.industry-card:hover { border-color: var(--primary); background: var(--primary-light); }
.industry-card.selected { border-color: var(--primary); background: var(--primary-light); }
.industry-card .ic-name { font-size: 14px; font-weight: 600; color: var(--deep); }
.industry-card .ic-tags { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 36px; }
  .hero-visual { height: 360px; }
  .sub-hero h1 { font-size: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .evo-track { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .evo-track::before { display: none; }
  .innov-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .comp-row { grid-template-columns: 1fr; gap: 6px; }
  .comp-row .col { text-align: left; }
  .nav-menu { display: none; }
  .tech-detail-item { grid-template-columns: 1fr; }
  .tech-detail-item:nth-child(even) .tdi-visual { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: 1fr; }
  .about-credentials { grid-template-columns: 1fr; }
  .tdi-specs { grid-template-columns: 1fr; }
}

/* ============ Product Series Cards (ARIFU-style) ============ */
.prod-series-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.prod-series-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
}
.prod-series-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(10,31,60,0.12);
  border-color: var(--primary-light);
}
.prod-series-banner {
  height: 140px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.prod-series-banner.bg-blue { background: linear-gradient(135deg, #014DB2, #00B4D8); }
.prod-series-banner.bg-green { background: linear-gradient(135deg, #0D8050, #14B886); }
.prod-series-banner.bg-amber { background: linear-gradient(135deg, #F2A516, #F8C257); }
.prod-series-banner.bg-purple { background: linear-gradient(135deg, #7E22CE, #A855F7); }
.prod-series-banner.bg-deep { background: linear-gradient(135deg, #0A1F3C, #142B4D); }
.prod-series-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15) 0%, transparent 60%);
}
.prod-series-icon {
  position: relative;
  z-index: 1;
  font-size: 48px;
  color: rgba(255,255,255,0.9);
}
.prod-series-body {
  padding: 20px;
}
.prod-series-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 8px;
  border-radius: 3px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.prod-series-tag.core { background: var(--primary-light); color: var(--primary); }
.prod-series-tag.built { background: var(--cyan-light); color: var(--cyan); }
.prod-series-tag.agent { background: var(--green-light); color: var(--green); }
.prod-series-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 6px;
}
.prod-series-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.prod-series-models {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.prod-model-chip {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--deep);
  font-weight: 500;
}
.prod-series-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line-light);
  font-size: 12px;
}
.prod-series-meta .flow { color: var(--primary); font-weight: 600; }
.prod-series-meta .link { color: var(--primary); font-weight: 600; cursor: pointer; }

/* ============ Nanobubble Education Section ============ */
.nano-edu {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
  padding: 80px 0;
}
.nano-edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.nano-edu-text h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--deep);
  margin-bottom: 18px;
  line-height: 1.2;
}
.nano-edu-text p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 14px;
}
.nano-edu-text .nano-fact {
  display: flex;
  gap: 14px;
  align-items: start;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 10px;
}
.nano-fact-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.nano-fact-text { font-size: 13px; color: var(--deep); }
.nano-fact-text strong { font-weight: 700; }

.nano-edu-visual {
  position: relative;
}
.nano-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.nano-compare-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.nano-compare-card.bad { background: #FAFBFC; }
.nano-compare-card.good { border-color: var(--primary-light); box-shadow: 0 8px 24px rgba(1,77,178,0.08); }
.nano-compare-card h4 { font-size: 14px; font-weight: 700; margin-bottom: 14px; }
.nano-compare-card.bad h4 { color: var(--muted); }
.nano-compare-card.good h4 { color: var(--primary); }
.nano-bubble-viz {
  height: 120px;
  position: relative;
  margin-bottom: 14px;
  border-radius: 8px;
  overflow: hidden;
}
.nano-bubble-viz.bad-bg { background: linear-gradient(180deg, #E2E8F0, #F1F5F9); }
.nano-bubble-viz.good-bg { background: linear-gradient(180deg, var(--primary-light), var(--cyan-light)); }
.nano-bubble-viz .big-bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.6);
  border: 2px solid var(--muted-2);
}
.nano-bubble-viz .nano-bubble {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.7;
}
.nano-compare-card .compare-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* ============ Industry Grid (ARIFU-style) ============ */
.industries-section {
  padding: 80px 0;
  background: var(--surface);
}
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.industry-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 24px;
  transition: all 0.25s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.industry-card::after {
  content: '→';
  position: absolute;
  bottom: 20px;
  right: 20px;
  font-size: 18px;
  color: var(--muted-2);
  transition: all 0.2s;
}
.industry-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(10,31,60,0.08);
  border-color: var(--primary-light);
}
.industry-card:hover::after { color: var(--primary); transform: translateX(4px); }
.industry-card.primary { border-left: 3px solid var(--primary); }
.industry-card.secondary { border-left: 3px solid var(--green); }
.industry-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.industry-icon.ic-industrial { background: var(--primary-light); color: var(--primary); }
.industry-icon.ic-agri { background: var(--green-light); color: var(--green); }
.industry-icon.ic-aqua { background: var(--cyan-light); color: var(--cyan); }
.industry-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
}
.industry-card .ind-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 30px;
}
.industry-card .ind-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 600;
  margin-bottom: 10px;
}
.industry-card.primary .ind-tag { background: var(--primary-light); color: var(--primary); }
.industry-card.secondary .ind-tag { background: var(--green-light); color: var(--green); }

/* ============ Tech Advantages Bar (SwirlTex-style) ============ */
.adv-bar {
  background: var(--deep);
  padding: 60px 0;
}
.adv-bar-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.adv-item {
  text-align: center;
  color: #fff;
}
.adv-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 12px;
  background: rgba(0,180,216,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--cyan);
}
.adv-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}
.adv-desc {
  font-size: 12px;
  color: #94A3B8;
  line-height: 1.5;
}

/* ============ Product Detail Page Styles ============ */
.prod-hero {
  padding: 110px 0 60px;
  background: radial-gradient(circle at 70% 30%, rgba(0,180,216,0.08) 0%, transparent 50%),
              radial-gradient(circle at 30% 70%, rgba(1,77,178,0.10) 0%, transparent 50%),
              linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 100%);
}
.prod-hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 50px;
  align-items: center;
}
.prod-hero h1 {
  font-size: 42px;
  font-weight: 800;
  color: var(--deep);
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.prod-hero .lead {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 24px;
}
.prod-specs-quick {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.prod-spec-quick {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}
.prod-spec-quick .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.prod-spec-quick .value { font-size: 18px; font-weight: 700; color: var(--deep); margin-top: 4px; }
.prod-spec-quick .value .unit { font-size: 13px; color: var(--muted); font-weight: 500; }

.prod-model-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(10,31,60,0.06);
}
.prod-model-table th {
  background: var(--deep);
  color: #fff;
  padding: 14px 16px;
  font-size: 12px;
  font-weight: 600;
  text-align: left;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.prod-model-table th:not(:first-child) { text-align: center; }
.prod-model-table td {
  padding: 14px 16px;
  font-size: 13px;
  color: var(--deep);
  border-bottom: 1px solid var(--line-light);
  text-align: center;
}
.prod-model-table td:first-child { text-align: left; font-weight: 600; }
.prod-model-table tr:last-child td { border-bottom: none; }
.prod-model-table tr:hover { background: var(--primary-light); }
.prod-model-table .featured { background: var(--primary-light); }
.prod-model-table .featured td:first-child { color: var(--primary); }

@media (max-width: 980px) {
  .prod-series-grid { grid-template-columns: repeat(2, 1fr); }
  .nano-edu-grid { grid-template-columns: 1fr; gap: 40px; }
  .industries-grid { grid-template-columns: 1fr; }
  .adv-bar-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .prod-hero-inner { grid-template-columns: 1fr; }
  .prod-hero h1 { font-size: 32px; }
  .prod-specs-quick { grid-template-columns: 1fr; }
  .prod-model-table { font-size: 12px; }
  .prod-model-table th, .prod-model-table td { padding: 10px 8px; }
}

/* ============ Animations & Scroll Effects ============ */

/* Keyframes */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: scale(1); } }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes floatYsm { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.85; } }
@keyframes shimmer { 0% { background-position: -200% center; } 100% { background-position: 200% center; } }
@keyframes bubbleRise {
  0% { transform: translateY(100%) scale(0.6); opacity: 0; }
  20% { opacity: 0.9; }
  80% { opacity: 0.7; }
  100% { transform: translateY(-120%) scale(1.1); opacity: 0; }
}
@keyframes swirl {
  0% { transform: rotate(0deg) translateX(40px) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(40px) rotate(-360deg); }
}
@keyframes swirlReverse {
  0% { transform: rotate(0deg) translateX(28px) rotate(0deg); }
  100% { transform: rotate(-360deg) translateX(28px) rotate(360deg); }
}
@keyframes spinSlow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes oilDrop {
  0% { transform: translateY(-30px) scale(0.8); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(80px) scale(1); opacity: 0; }
}
@keyframes waterFlow {
  0% { stroke-dashoffset: 100; }
  100% { stroke-dashoffset: 0; }
}
@keyframes barGrow { from { width: 0; } to { width: var(--target-width, 100%); } }
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0,180,216,0.3); }
  50% { box-shadow: 0 0 40px rgba(0,180,216,0.6); }
}
@keyframes scrollHint {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* Hero entrance animations (on page load) */
.hero-tag { animation: fadeInUp 0.7s ease 0.15s both; }
.hero h1 { animation: fadeInUp 0.8s ease 0.3s both; }
.hero p.lead { animation: fadeInUp 0.8s ease 0.5s both; }
.hero-actions { animation: fadeInUp 0.8s ease 0.7s both; }
.hero-visual { animation: fadeInRight 1s ease 0.6s both; }
.hero-card-1 { animation: fadeInUp 0.7s ease 0.8s both; }
.hero-card-2 { animation: fadeInUp 0.7s ease 1.0s both; }
.hero-card-3 { animation: scaleIn 0.7s ease 1.2s both; }

/* Sub-hero entrance */
.sub-hero-tag { animation: fadeInUp 0.6s ease 0.15s both; }
.sub-hero h1 { animation: fadeInUp 0.7s ease 0.3s both; }
.sub-hero p.lead { animation: fadeInUp 0.7s ease 0.5s both; }
.breadcrumb { animation: fadeIn 0.6s ease 0.1s both; }

/* Scroll reveal (Intersection Observer toggles .visible) */
.reveal { opacity: 0; transition: opacity 0.8s ease, transform 0.8s ease; will-change: opacity, transform; }
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-50px); }
.reveal-right { transform: translateX(50px); }
.reveal-scale { transform: scale(0.9); }
.reveal.visible { opacity: 1; transform: translate(0, 0) scale(1); }

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; animation-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; animation-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; animation-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; animation-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; animation-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; animation-delay: 0.6s; }

/* Float animations for hero cards */
.hero-card-1 { animation: fadeInUp 0.7s ease 0.8s both, floatY 6s ease-in-out 1.5s infinite; }
.hero-card-2 { animation: fadeInUp 0.7s ease 1.0s both, floatYsm 5s ease-in-out 1.8s infinite; }
.hero-card-3 { animation: scaleIn 0.7s ease 1.2s both, floatY 7s ease-in-out 2s infinite; }

/* Stat number animated counter */
.stat-num[data-count] { display: inline-block; }

/* Bar growth on reveal */
.hc-bar > span { width: 0; transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1) 0.4s; }
.hero-card.visible .hc-bar > span,
.reveal.visible .hc-bar > span { width: var(--target-width, 90%); }

/* Scroll hint indicator */
.scroll-hint {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; color: var(--muted-2);
  font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase;
  pointer-events: none;
}
.scroll-hint-mouse {
  width: 22px; height: 36px;
  border: 2px solid var(--muted-2);
  border-radius: 12px; position: relative;
}
.scroll-hint-mouse::after {
  content: ''; position: absolute;
  top: 6px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; background: var(--muted-2);
  border-radius: 2px;
  animation: scrollHint 1.8s ease-in-out infinite;
}

/* Product card enhanced hover */
.prod-series-card {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
  will-change: transform;
}
.prod-series-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px rgba(10,31,60,0.15);
}
.prod-series-card:hover .prod-series-banner { transform: scale(1.03); }
.prod-series-banner { transition: transform 0.4s ease; }
.prod-series-card:hover .prod-model-chip { transform: translateY(-2px); }
.prod-model-chip { transition: transform 0.2s ease; }

/* Industry card hover */
.industry-card { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.industry-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(10,31,60,0.12); }

/* evo-item connector animation */
.evo-item { transition: transform 0.3s ease; }
.evo-item:hover { transform: translateY(-4px); }
.evo-item:hover .evo-dot { transform: scale(1.4); box-shadow: 0 0 20px rgba(0,180,216,0.5); }
.evo-dot { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.evo-item.active .evo-dot { animation: glowPulse 2s ease-in-out infinite; }

/* Comparison table row hover */
.comp-row { transition: background 0.2s ease; }
.comp-row:hover { background: var(--primary-light); }

/* Shimmer on CTA button */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ''; position: absolute; top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::after { left: 100%; }

/* ============ Technology Page: Principle Animations ============ */

/* Animation stage shared */
.principle-stage {
  background: linear-gradient(135deg, #F8FBFF 0%, #EEF4FA 100%);
  border-radius: 16px; padding: 32px;
  border: 1px solid var(--line);
  position: relative; overflow: hidden;
  min-height: 320px;
}

/* --- 1. Nanobubble generation principle --- */
.nano-gen-stage { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }
.nano-gen-membrane {
  width: 80px; height: 200px;
  background: linear-gradient(180deg, var(--deep), var(--deep-2));
  border-radius: 8px; position: relative;
  box-shadow: 0 8px 24px rgba(10,31,60,0.3);
}
.nano-gen-membrane::before, .nano-gen-membrane::after {
  content: ''; position: absolute; left: 8px; right: 8px;
  height: 4px; background: var(--cyan);
  border-radius: 2px; opacity: 0.6;
}
.nano-gen-membrane::before { top: 20%; }
.nano-gen-membrane::after { bottom: 20%; }
.nano-gen-pore {
  position: absolute; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; background: var(--cyan);
  border-radius: 50%; box-shadow: 0 0 8px var(--cyan);
}
.nano-gen-water {
  flex: 1; min-width: 240px; height: 280px;
  position: relative;
  background: linear-gradient(180deg, rgba(0,180,216,0.05), rgba(0,180,216,0.15));
  border-radius: 12px; overflow: hidden;
  border: 1px solid rgba(0,180,216,0.2);
}
.nano-gen-water-label {
  position: absolute; top: 10px; left: 12px;
  font-size: 11px; color: var(--muted); font-weight: 600;
  letter-spacing: 1px; z-index: 5;
}
.nano-bubble-anim {
  position: absolute; bottom: -10px;
  width: 8px; height: 8px;
  background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(0,180,216,0.6));
  border-radius: 50%;
  border: 1px solid rgba(0,180,216,0.4);
  animation: bubbleRise 4s ease-in infinite;
}

/* --- 2. Swirl membrane separation --- */
.swirl-stage {
  display: flex; align-items: center; justify-content: center;
  min-height: 320px; position: relative;
}
.swirl-vessel {
  width: 280px; height: 280px;
  position: relative;
}
.swirl-vessel-outer {
  position: absolute; inset: 0;
  border: 3px solid var(--line);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,216,0.05), transparent 70%);
}
.swirl-vessel-inner {
  position: absolute; inset: 40px;
  border: 2px dashed var(--cyan);
  border-radius: 50%;
  opacity: 0.4;
}
.swirl-center {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 60px; height: 60px;
  background: var(--deep); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); font-size: 11px; font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 0 30px rgba(0,180,216,0.3);
}
.swirl-particle {
  position: absolute; top: 50%; left: 50%;
  width: 10px; height: 10px; margin: -5px;
  border-radius: 50%;
}
.swirl-particle.oil { background: var(--amber); animation: swirl 3s linear infinite; }
.swirl-particle.oil-2 { background: var(--amber); animation: swirl 3.5s linear infinite; animation-delay: -0.5s; }
.swirl-particle.water { background: var(--cyan); animation: swirlReverse 4s linear infinite; }
.swirl-particle.water-2 { background: var(--cyan); animation: swirlReverse 3.2s linear infinite; animation-delay: -0.8s; }
.swirl-particle.solid { background: var(--muted); animation: swirl 2.5s linear infinite; animation-delay: -1s; }
.swirl-arrow {
  position: absolute; top: 10px; right: 10px;
  width: 30px; height: 30px;
  color: var(--cyan); font-size: 20px;
  animation: spinSlow 4s linear infinite;
}
.swirl-legend {
  display: flex; gap: 16px; justify-content: center;
  margin-top: 16px; flex-wrap: wrap;
}
.swirl-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.swirl-legend-dot { width: 10px; height: 10px; border-radius: 50%; }

/* --- 3. Oil-water separation DAF principle --- */
.ow-sep-stage {
  display: flex; flex-direction: column; gap: 0;
  max-width: 480px; margin: 0 auto;
  position: relative;
}
.ow-sep-tank {
  height: 240px; position: relative;
  background: linear-gradient(180deg, rgba(0,180,216,0.08) 0%, rgba(0,180,216,0.18) 100%);
  border: 2px solid var(--line);
  border-radius: 8px 8px 0 0;
  overflow: hidden;
}
.ow-sep-waterline {
  position: absolute; top: 30%; left: 0; right: 0;
  height: 2px; background: var(--cyan); opacity: 0.4;
}
.ow-sep-scum {
  position: absolute; top: 25%; left: 0; right: 0; height: 8%;
  background: repeating-linear-gradient(90deg, var(--amber) 0, var(--amber) 6px, transparent 6px, transparent 12px);
  opacity: 0.6;
}
.ow-sep-oil-drop {
  position: absolute; bottom: 10px;
  width: 12px; height: 12px;
  background: var(--amber); border-radius: 50%;
  opacity: 0.8;
  animation: oilDrop 3s ease-in infinite;
}
.ow-sep-clean {
  height: 50px; background: var(--cyan-light);
  border: 2px solid var(--line); border-top: none;
  border-radius: 0 0 8px 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: var(--primary); font-weight: 600;
  letter-spacing: 1px;
}
.ow-sep-label {
  position: absolute; font-size: 10px; color: var(--muted);
  font-weight: 600; letter-spacing: 0.5px;
}

/* --- 4. Cascade injection --- */
.cascade-stage {
  display: flex; align-items: center; gap: 0;
  justify-content: center; min-height: 200px;
}
.cascade-pipe {
  width: 80%; height: 60px;
  background: linear-gradient(180deg, var(--deep-2), var(--deep));
  border-radius: 30px; position: relative;
  display: flex; align-items: center; justify-content: space-around;
}
.cascade-injector {
  width: 16px; height: 30px;
  background: var(--cyan); border-radius: 4px 4px 8px 8px;
  position: relative;
  box-shadow: 0 0 12px rgba(0,180,216,0.5);
}
.cascade-injector::after {
  content: ''; position: absolute;
  bottom: -8px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--cyan); opacity: 0.6;
  border-radius: 2px;
  animation: pulse 1.2s ease-in-out infinite;
}
.cascade-flow-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-size: 20px; color: var(--cyan); opacity: 0.6;
}

/* ============ Video Embed Section ============ */
.video-section { padding: 80px 0; background: var(--bg); }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 40px; }
.video-card {
  background: var(--surface); border-radius: 14px;
  overflow: hidden; border: 1px solid var(--line);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.video-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(10,31,60,0.10); }
.video-embed {
  position: relative; padding-bottom: 56.25%; height: 0;
  overflow: hidden; background: var(--deep);
}
.video-embed iframe, .video-embed video {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border: none;
}
.video-info { padding: 20px 24px; }
.video-title { font-size: 16px; font-weight: 700; color: var(--deep); margin-bottom: 6px; }
.video-desc { font-size: 13px; color: var(--muted); line-height: 1.6; }
.video-tag {
  display: inline-block; padding: 3px 10px;
  background: var(--cyan-light); color: var(--cyan);
  border-radius: 100px; font-size: 11px; font-weight: 600;
  letter-spacing: 0.5px; margin-bottom: 10px;
}

@media (max-width: 768px) {
  .video-grid { grid-template-columns: 1fr; }
  .nano-gen-stage { flex-direction: column; }
  .swirl-vessel { width: 220px; height: 220px; }
  .scroll-hint { display: none; }
}

/* Progress bar at top of page */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  z-index: 200; width: 0;
  transition: width 0.1s ease;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ============ Floating CTA Bar ============ */
.floating-cta {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 150;
  display: flex; justify-content: center; gap: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 -4px 20px rgba(10,31,60,0.08);
  border-top: 1px solid rgba(0,0,0,0.06);
  padding: 10px 20px;
  transform: translateY(100%); transition: transform 0.4s ease;
}
.floating-cta.show { transform: translateY(0); }
.fcta-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 20px; text-decoration: none;
  color: var(--deep); border-radius: 8px;
  transition: background 0.2s; white-space: nowrap;
}
.fcta-item:hover { background: rgba(0,0,0,0.04); }
.fcta-icon { font-size: 22px; line-height: 1; }
.fcta-text { display: flex; flex-direction: column; line-height: 1.2; }
.fcta-text small { font-size: 10px; color: var(--muted); }
.fcta-text strong { font-size: 14px; color: var(--deep); }
.fcta-primary {
  background: var(--primary); color: #fff;
  padding: 10px 28px; margin-left: 10px;
}
.fcta-primary:hover { background: var(--primary-dark, #003d8f); }
.fcta-primary .fcta-text small { color: rgba(255,255,255,0.7); }
.fcta-primary .fcta-text strong { color: #fff; }
.fcta-phone .fcta-text strong { color: var(--primary); }

@media (max-width: 768px) {
  .floating-cta { padding: 8px 10px; gap: 0; flex-wrap: nowrap; overflow-x: auto; }
  .fcta-item { padding: 6px 12px; }
  .fcta-text small { display: none; }
  .fcta-primary { margin-left: 5px; padding: 8px 16px; }
  .fcta-icon { font-size: 18px; }
}

/* CTA section in product/case pages */
.cta-band {
  background: linear-gradient(135deg, var(--primary), var(--deep));
  padding: 50px 0; text-align: center; color: #fff;
}
.cta-band h3 { font-size: 26px; font-weight: 800; margin-bottom: 12px; }
.cta-band p { font-size: 15px; opacity: 0.85; margin-bottom: 24px; }
.cta-band-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-band-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px;
  font-size: 15px; font-weight: 700; text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cta-band-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.15); }
.cta-band-btn-white { background: #fff; color: var(--primary); }
.cta-band-btn-outline { border: 2px solid rgba(255,255,255,0.4); color: #fff; }


/* ============ New-site sections (Mission / Testimonials / Resources) ============ */

/* Mission */
.mission-section { padding: 90px 0; background: linear-gradient(180deg, #f6f9ff 0%, #ffffff 100%); }
.mission-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: center; }
.mission-text .section-tag { margin-bottom: 14px; }
.mission-text p { font-size: 16px; line-height: 1.9; color: var(--muted); margin-bottom: 18px; }
.mission-text .btn-primary { margin-top: 10px; }
.mission-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  background: var(--deep); border-radius: 20px; padding: 36px 30px;
  box-shadow: 0 20px 50px rgba(10,31,60,0.18);
}
.mission-stats .stat-item { text-align: center; padding: 18px 8px; }
.mission-stats .stat-item strong {
  display: block; font-size: 30px; font-weight: 800; color: #fff;
  font-variant-numeric: tabular-nums; margin-bottom: 6px;
}
.mission-stats .stat-item span { font-size: 13px; color: rgba(255,255,255,0.72); line-height: 1.5; }
@media (max-width: 992px) {
  .mission-grid { grid-template-columns: 1fr; gap: 36px; }
  .mission-stats { padding: 26px 20px; }
}

/* Testimonials */
.testimonials-section { padding: 90px 0; background: #fff; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 10px; }
.testimonial-card {
  background: #f7faff; border: 1px solid rgba(1,77,178,0.08);
  border-radius: 16px; padding: 32px 26px; position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(10,31,60,0.10); }
.testimonial-card .quote {
  font-size: 15px; line-height: 1.9; color: var(--deep);
  margin-bottom: 22px; position: relative; padding-left: 20px;
}
.testimonial-card .quote::before {
  content: "“"; position: absolute; left: -4px; top: -14px;
  font-size: 52px; color: var(--primary); opacity: 0.25; font-family: Georgia, serif;
}
.testimonial-meta { display: flex; flex-direction: column; gap: 4px; border-top: 1px solid rgba(1,77,178,0.12); padding-top: 14px; }
.t-name { font-weight: 700; font-size: 14px; color: var(--primary); }
.t-scene { font-size: 12px; color: var(--muted); }
@media (max-width: 992px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* Resources */
.resources-section { padding: 90px 0; background: #f6f9ff; }
.resources-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 10px; }
.resource-card {
  display: block; text-decoration: none;
  background: #fff; border: 1px solid rgba(1,77,178,0.08);
  border-radius: 16px; padding: 34px 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.resource-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(10,31,60,0.10); border-color: rgba(1,77,178,0.25); }
.resource-card .resource-icon { font-size: 40px; margin-bottom: 16px; }
.resource-card h4 { font-size: 19px; font-weight: 800; color: var(--deep); margin-bottom: 10px; }
.resource-card p { font-size: 14px; line-height: 1.8; color: var(--muted); }
@media (max-width: 992px) { .resources-grid { grid-template-columns: 1fr; } }

/* Industries grid wider (7 cards) */
.industries-grid { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1200px) { .industries-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .industries-grid { grid-template-columns: 1fr; } }

/* Sub-hero tag (used on industry/tech/product subpages) */
.sub-hero-tag {
  display: inline-block; background: rgba(1,77,178,0.10); color: var(--primary);
  font-size: 13px; font-weight: 700; padding: 6px 14px; border-radius: 999px; margin-bottom: 14px;
}
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 16px; flex-wrap: wrap; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* Subpage section helper */
.subpage-section { padding: 70px 0; }
.subpage-section.alt { background: #f6f9ff; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 24px; }
.feature-card {
  background: #fff; border: 1px solid rgba(1,77,178,0.08); border-radius: 14px;
  padding: 26px 22px; transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(10,31,60,0.08); }
.feature-card .f-icon { font-size: 30px; margin-bottom: 12px; }
.feature-card h4 { font-size: 17px; font-weight: 800; color: var(--deep); margin-bottom: 8px; }
.feature-card p { font-size: 14px; line-height: 1.8; color: var(--muted); }
@media (max-width: 992px) { .feature-grid { grid-template-columns: 1fr; } }


/* ============ Mobile navigation (drawer) ============ */
.mobile-menu-btn {
  display: none; background: none; border: 0; cursor: pointer;
  width: 44px; height: 44px; padding: 11px; margin-left: auto;
  position: relative; z-index: 60;
}
.mobile-menu-btn span { display: block; width: 100%; height: 2px; background: var(--deep); margin: 4px 0; transition: transform 0.3s ease, opacity 0.3s ease; }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav-backdrop {
  position: fixed; inset: 0; background: rgba(10,20,35,0.5); z-index: 58;
  opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(2px);
}
.mobile-nav-backdrop.show { opacity: 1; visibility: visible; }
.mobile-nav-drawer {
  position: fixed; top: 0; right: 0; height: 100vh; height: 100dvh; width: min(320px, 82vw);
  background: #fff; z-index: 59; padding: 90px 26px 30px;
  transform: translateX(100%); transition: transform 0.35s ease;
  overflow-y: auto; box-shadow: -12px 0 40px rgba(10,31,60,0.15);
  display: flex; flex-direction: column; gap: 6px;
}
.mobile-nav-drawer.open { transform: translateX(0); }
.mobile-nav-drawer a { color: var(--deep); text-decoration: none; font-size: 15px; padding: 13px 6px; border-bottom: 1px solid rgba(1,77,178,0.06); }
.mobile-nav-drawer a.mn-cta { background: var(--primary); color: #fff; text-align: center; border-radius: 8px; border: 0; margin-top: 14px; padding: 14px; font-weight: 700; }
@media (max-width: 992px) {
  .mobile-menu-btn { display: block; }
  .nav-menu { display: none; }
  .nav .nav-cta { display: none; }
  .nav-phone { font-size: 13px; padding: 8px 10px; }
}
@media (max-width: 480px) {
  .nav-phone svg { display: none; }
  .nav-phone { font-size: 12px; }
}

/* ============ Rich Content (from source site) ============ */
.rich-content { font-size: 15px; line-height: 1.8; color: var(--text); }
.rich-content h2 { font-size: 24px; font-weight: 700; color: var(--deep); margin: 40px 0 16px; padding-bottom: 10px; border-bottom: 2px solid var(--line); }
.rich-content h3 { font-size: 19px; font-weight: 700; color: var(--deep); margin: 28px 0 12px; }
.rich-content h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin: 20px 0 8px; }
.rich-content p { margin: 12px 0; }
.rich-content ul, .rich-content ol { margin: 12px 0 12px 24px; }
.rich-content li { margin: 6px 0; }
.rich-content img { border-radius: 12px; margin: 16px 0; box-shadow: 0 4px 20px rgba(10,31,60,0.08); }
.rich-content a { color: var(--primary); text-decoration: underline; }
.rich-content table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.rich-content table th, .rich-content table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.rich-content table th { background: var(--primary-light); color: var(--deep); font-weight: 700; }
.rich-content hr { border: 0; border-top: 1px solid var(--line); margin: 24px 0; }
.rich-content blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); padding: 14px 18px; margin: 16px 0; border-radius: 0 8px 8px 0; color: var(--deep); }
.subpage-section .rich-content h2:first-child { margin-top: 0; }
@media (max-width: 768px) {
  .rich-content h2 { font-size: 20px; }
  .rich-content h3 { font-size: 17px; }
}

/* ============================================================
   ARIFU 主题覆盖层 (ARIFU Theme Override)
   ARIFU 品牌视觉规范（统一主色）：
   主色 #0B4F6C | 深蓝背景 #073B52 | 荧光绿 #87c525 / #d7ff75 | 浅蓝 #7adaed
   字体 Montserrat / Helvetica Neue
   ============================================================ */
:root {
  --primary: #0B4F6C;
  --primary-dark: #073B52;
  --primary-light: #E8F0F5;
  --deep: #0A1F3C;
  --deep-2: #142B4D;
  --lime: #87c525;
  --lime-bright: #d7ff75;
  --accent: #7adaed;
  --text: #1A2B35;
  --muted: #5A6B74;
  --line: #E3E9ED;
  --bg-soft: #f5f7fa;
  --font: 'Montserrat', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
body { font-family: var(--font); color: var(--text); }

/* ============ 首页板块样式 ============ */

/* --- Hero（深蓝背景 + 气泡） --- */
.hero-native {
  position: relative;
  background: linear-gradient(140deg, #012e4a 0%, #014567 55%, #023f5e 100%);
  color: #fff;
  overflow: hidden;
  padding: 150px 0 130px;
}
.hero-native .hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  opacity: 0.55;
}
.hero-native .hero-bg-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(90deg, rgba(1,69,103,0.94) 0%, rgba(1,69,103,0.72) 50%, rgba(1,46,74,0.35) 100%);
}
.hero-native .container { position: relative; z-index: 2; }
.hero-native .hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--lime-bright); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 20px;
}
.hero-native .hero-kicker::before { content: ''; width: 34px; height: 2px; background: var(--lime-bright); display: inline-block; }
.hero-native h1 {
  font-size: clamp(38px, 5.2vw, 62px);
  line-height: 1.08; font-weight: 700; color: #fff;
  max-width: 720px; margin-bottom: 22px;
  letter-spacing: -0.5px;
}
.hero-native h1 em { font-style: normal; color: var(--accent); }
.hero-native .hero-sub {
  font-size: 17px; line-height: 1.75; color: rgba(255,255,255,0.88);
  max-width: 600px; margin-bottom: 34px;
}
.hero-native .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-lime {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--lime); color: #fff; font-weight: 700;
  font-size: 15px; padding: 15px 34px; border-radius: 100px;
  text-decoration: none; border: 0; cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 6px 20px rgba(135,197,37,0.35);
}
.btn-lime:hover { background: #7ab51e; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(135,197,37,0.4); }
.btn-ghost-light {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: #fff; font-weight: 700;
  font-size: 15px; padding: 15px 34px; border-radius: 100px;
  border: 2px solid rgba(255,255,255,0.65); cursor: pointer; text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.btn-ghost-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.hero-native .hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: 54px; padding-top: 34px;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.hero-native .hs-item .hs-num {
  font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; color: #fff;
  line-height: 1; letter-spacing: -1px;
}
.hero-native .hs-item .hs-num span { color: var(--lime-bright); }
.hero-native .hs-item .hs-label {
  margin-top: 8px; font-size: 13px; color: rgba(255,255,255,0.78);
  text-transform: uppercase; letter-spacing: 1px;
}
.hero-native .hero-help {
  margin-top: 30px; display: flex; gap: 14px; align-items: center;
  background: rgba(255,255,255,0.08); border-left: 4px solid var(--accent);
  padding: 16px 20px; border-radius: 0 10px 10px 0; max-width: 620px;
}
.hero-native .hero-help strong { color: #fff; font-size: 15px; }
.hero-native .hero-help span { font-size: 14px; color: rgba(255,255,255,0.8); }
.hero-native .hero-help .hh-btn {
  margin-left: auto; white-space: nowrap; color: var(--lime-bright);
  font-weight: 700; font-size: 14px; text-decoration: none;
}

/* --- Impact 数据条（蓝底） --- */
.impact-bar {
  background: linear-gradient(120deg, #1b75bb 0%, #1583c7 60%, #1590cf 100%);
  color: #fff; padding: 64px 0;
}
.impact-bar .impact-head { text-align: center; margin-bottom: 44px; }
.impact-bar .impact-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--lime-bright); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
}
.impact-bar .impact-kicker .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--lime-bright); display: inline-block; }
.impact-bar h2 { font-size: clamp(26px, 3vw, 38px); color: #fff; font-weight: 700; margin-top: 8px; }
.impact-bar .impact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
  text-align: center;
}
.impact-bar .im-item .im-num {
  font-size: clamp(40px, 4.6vw, 60px); font-weight: 700; color: #fff;
  line-height: 1; letter-spacing: -1px;
}
.impact-bar .im-item .im-num span { color: var(--lime-bright); }
.impact-bar .im-item .im-title {
  margin-top: 10px; font-size: 14px; font-weight: 700; color: rgba(255,255,255,0.95);
  text-transform: uppercase; letter-spacing: 1px;
}
.impact-bar .im-item .im-desc { margin-top: 6px; font-size: 13px; color: rgba(255,255,255,0.72); }

/* --- 通用板块容器 --- */
.section-core { padding: 96px 0; }
.section-core .sec-kicker {
  display: flex; align-items: center; gap: 10px;
  color: var(--primary); font-size: 13px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
}
.section-core .sec-kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); display: inline-block; }
.section-core h2 {
  font-size: clamp(26px, 3.2vw, 40px); font-weight: 700; color: var(--deep);
  line-height: 1.18; letter-spacing: -0.4px; margin: 12px 0 18px;
}
.section-core .sec-desc { font-size: 16px; line-height: 1.75; color: var(--text); max-width: 720px; }

/* --- What We Do 滑条卡片 --- */
.what-we-do-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
  margin-top: 48px;
}
.wwd-card {
  position: relative; border-radius: 18px; overflow: hidden;
  aspect-ratio: 4 / 3; color: #fff; display: flex; flex-direction: column; justify-content: flex-end;
  background-size: cover; background-position: center;
  box-shadow: 0 14px 40px rgba(1,69,103,0.18);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.wwd-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(1,69,103,0.28); }
.wwd-card .wwd-shade {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(1,46,74,0.92) 0%, rgba(1,46,74,0.35) 45%, rgba(1,46,74,0.05) 100%);
}
.wwd-card .wwd-body { position: relative; padding: 30px; }
.wwd-card .wwd-tag {
  display: inline-block; background: var(--lime); color: #fff;
  font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  padding: 5px 12px; border-radius: 100px; margin-bottom: 14px;
}
.wwd-card h3 { font-size: 23px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.wwd-card p { font-size: 14.5px; line-height: 1.7; color: rgba(255,255,255,0.85); margin-bottom: 18px; }
.wwd-card .wwd-link {
  color: var(--lime-bright); font-weight: 700; font-size: 14px; text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.wwd-card .wwd-link:hover { text-decoration: underline; }

/* --- 行业卡片网格 --- */
.industries-grid-m {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 48px;
}
.industry-card-m {
  position: relative; border-radius: 14px; overflow: hidden; aspect-ratio: 4 / 3;
  color: #fff; display: flex; align-items: flex-end;
  background-size: cover; background-position: center; text-decoration: none;
  box-shadow: 0 10px 30px rgba(1,69,103,0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.industry-card-m:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(1,69,103,0.22); }
.industry-card-m .ic-shade {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(1,46,74,0.88) 0%, rgba(1,46,74,0.25) 55%, rgba(1,46,74,0) 100%);
}
.industry-card-m .ic-name {
  position: relative; padding: 22px; width: 100%;
  font-size: 18px; font-weight: 700; color: #fff; line-height: 1.3;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.industry-card-m .ic-name .ic-arrow {
  width: 32px; height: 32px; border-radius: 50%; background: var(--lime);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0; transition: transform 0.3s ease;
}
.industry-card-m:hover .ic-arrow { transform: rotate(-45deg); }

/* --- 纳米气泡科普（左右图文） --- */
.nano-edu-m {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.nano-edu-m .nano-visual {
  position: relative; border-radius: 20px; overflow: hidden;
  box-shadow: 0 18px 50px rgba(1,69,103,0.16);
}
.nano-edu-m .nano-visual img { width: 100%; display: block; }
.nano-bubble-list { margin-top: 30px; display: grid; gap: 18px; }
.nano-bubble-list .nb-item { display: flex; gap: 14px; align-items: flex-start; }
.nano-bubble-list .nb-icon {
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  background: var(--primary-light); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center; font-size: 19px;
}
.nano-bubble-list .nb-item h4 { font-size: 16px; font-weight: 700; color: var(--deep); margin-bottom: 4px; }
.nano-bubble-list .nb-item p { font-size: 14.5px; line-height: 1.7; color: var(--text); }

/* --- 客户评价 --- */
.testimonial-m { background: var(--bg-soft); padding: 96px 0; }
.testimonial-grid-m { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 48px; }
.testimonial-card-m {
  background: #fff; border-radius: 16px; padding: 30px;
  box-shadow: 0 8px 30px rgba(1,69,103,0.08); position: relative;
}
.testimonial-card-m .tq {
  color: var(--lime); font-size: 46px; line-height: 1; font-weight: 700; margin-bottom: 10px;
}
.testimonial-card-m p { font-size: 15px; line-height: 1.75; color: var(--text); margin-bottom: 22px; }
.testimonial-card-m .tauthor { display: flex; align-items: center; gap: 12px; }
.testimonial-card-m .tauthor .tavatar {
  width: 46px; height: 46px; border-radius: 50%; overflow: hidden;
  background: var(--primary-light); display: inline-flex; align-items: center; justify-content: center;
  color: var(--primary); font-weight: 700; font-size: 17px;
}
.testimonial-card-m .tauthor .tavatar img { width: 100%; height: 100%; object-fit: cover; }
.testimonial-card-m .tauthor .tname { font-size: 14px; font-weight: 700; color: var(--deep); }
.testimonial-card-m .tauthor .trole { font-size: 12.5px; color: var(--muted); }

/* --- 研发/技术 About --- */
.about-m { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: center; }
.about-m .about-visual { border-radius: 20px; overflow: hidden; box-shadow: 0 18px 50px rgba(1,69,103,0.16); }
.about-m .about-visual img { width: 100%; display: block; }
.about-m .about-points { margin-top: 26px; display: grid; gap: 16px; }
.about-m .about-points .ap-item { display: flex; gap: 14px; align-items: flex-start; }
.about-m .about-points .ap-icon {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  background: var(--lime); color: #fff; display: inline-flex; align-items: center; justify-content: center;
  font-size: 17px;
}
.about-m .about-points .ap-item h4 { font-size: 15.5px; font-weight: 700; color: var(--deep); margin-bottom: 4px; }
.about-m .about-points .ap-item p { font-size: 14px; line-height: 1.65; color: var(--text); }

/* --- 资源中心 --- */
.resource-grid-m { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 48px; }
.resource-card-m {
  background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 8px 30px rgba(1,69,103,0.08); text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.resource-card-m:hover { transform: translateY(-5px); box-shadow: 0 14px 40px rgba(1,69,103,0.18); }
.resource-card-m .rc-img { height: 200px; background-size: cover; background-position: center; position: relative; }
.resource-card-m .rc-img .rc-tag {
  position: absolute; top: 14px; left: 14px; background: var(--lime); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  padding: 4px 10px; border-radius: 100px;
}
.resource-card-m .rc-body { padding: 22px; }
.resource-card-m .rc-body h4 { font-size: 16.5px; font-weight: 700; color: var(--deep); line-height: 1.4; margin-bottom: 8px; }
.resource-card-m .rc-body p { font-size: 13.5px; line-height: 1.65; color: var(--text); margin-bottom: 14px; }
.resource-card-m .rc-body .rc-link { color: var(--primary); font-weight: 700; font-size: 13.5px; display: inline-flex; align-items: center; gap: 5px; }

/* --- FAQ --- */
.faq-m { max-width: 860px; margin: 48px auto 0; }
.faq-item-m { border-bottom: 1px solid var(--line); }
.faq-item-m .fq-q {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 22px 4px; cursor: pointer; font-size: 16.5px; font-weight: 600; color: var(--deep);
}
.faq-item-m .fq-q .fq-icon {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  background: var(--primary-light); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.faq-item-m.open .fq-icon { transform: rotate(45deg); background: var(--lime); color: #fff; }
.faq-item-m .fq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
  font-size: 14.5px; line-height: 1.75; color: var(--text);
}
.faq-item-m.open .fq-a { max-height: 400px; padding-bottom: 22px; }

/* --- CTA --- */
.cta-m {
  position: relative; overflow: hidden;
  background: linear-gradient(130deg, #014567 0%, #1b75bb 100%);
  color: #fff; padding: 90px 0;
}
.cta-m .cta-bg { position: absolute; inset: 0; opacity: 0.18; background-size: cover; background-position: center; }
.cta-m .container { position: relative; z-index: 2; text-align: center; }
.cta-m h2 { font-size: clamp(28px, 3.6vw, 44px); color: #fff; font-weight: 700; max-width: 760px; margin: 0 auto 16px; }
.cta-m p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 620px; margin: 0 auto 34px; line-height: 1.75; }
.cta-m .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* --- 页脚（ARIFU 风格） --- */
.site-footer-m {
  background: var(--deep-2); color: rgba(255,255,255,0.85);
  padding: 70px 0 0; font-size: 14px;
}
.site-footer-m .footer-grid-m {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px;
}
.site-footer-m .fg-brand .fg-logo { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.site-footer-m .fg-brand .fg-logo span { color: var(--lime-bright); }
.site-footer-m .fg-brand p { line-height: 1.75; color: rgba(255,255,255,0.7); max-width: 320px; }
.site-footer-m .fg-col h5 {
  font-size: 13px; font-weight: 700; color: #fff; letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 18px;
}
.site-footer-m .fg-col ul { list-style: none; display: grid; gap: 10px; }
.site-footer-m .fg-col a { color: rgba(255,255,255,0.72); text-decoration: none; transition: color 0.2s ease; }
.site-footer-m .fg-col a:hover { color: var(--lime-bright); }
.site-footer-m .fg-social { display: flex; gap: 10px; margin-top: 18px; }
.site-footer-m .fg-social a {
  width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.12);
  display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 16px;
  transition: background 0.25s ease;
}
.site-footer-m .fg-social a:hover { background: var(--lime); }
.site-footer-m .footer-bottom-m {
  border-top: 1px solid rgba(255,255,255,0.12); padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255,255,255,0.55);
}

/* --- 导航（ARIFU 风格） --- */
.nav-main { background: #fff; box-shadow: 0 2px 20px rgba(1,69,103,0.08); }
.nav-main .nav-logo a { color: var(--deep); font-weight: 800; }
.nav-main .nav-logo a span { color: var(--lime); }
.nav-main .nav-menu a { color: var(--deep); }
.nav-main .nav-menu a:hover { color: var(--primary); }
.nav-main .nav-cta { background: var(--lime); border-radius: 100px; padding: 12px 26px; font-weight: 700; box-shadow: 0 6px 18px rgba(135,197,37,0.3); }

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .industries-grid-m { grid-template-columns: repeat(2, 1fr); }
  .what-we-do-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer-m .footer-grid-m { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .section-core { padding: 64px 0; }
  .testimonial-m { padding: 64px 0; }
  .hero-native { padding: 120px 0 90px; }
  .hero-native .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .impact-bar .impact-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .what-we-do-grid { grid-template-columns: 1fr; }
  .industries-grid-m { grid-template-columns: 1fr; }
  .nano-edu-m { grid-template-columns: 1fr; gap: 34px; }
  .about-m { grid-template-columns: 1fr; gap: 34px; }
  .testimonial-grid-m { grid-template-columns: 1fr; }
  .resource-grid-m { grid-template-columns: 1fr; }
  .site-footer-m .footer-grid-m { grid-template-columns: 1fr 1fr; gap: 30px; }
  .hero-native .hero-help { flex-wrap: wrap; }
  .hero-native .hero-help .hh-btn { margin-left: 0; }
}

/* ============================================================
   ARIFU 原生类名视觉适配层 (ARIFU Native Class Override)
   针对 index.html 中已重构为 arifu-native 类名的区块：
   .hero-section / .impact-section
   ============================================================ */

/* ================= Hero (.hero-section) ================= */
.hero-section {
  position: relative;
  background: linear-gradient(140deg, #012e4a 0%, #014567 55%, #023f5e 100%);
  color: #fff;
  overflow: hidden;
  padding: 150px 0 70px;
}
.hero-section .hs-img {
  position: absolute; inset: 0; z-index: 0;
}
.hero-section .hs-img img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.45;
}
/* Hero 视频背景覆盖图片 */
.hero-section .hs-img .hero-video-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  z-index: 2;
  opacity: 0.6;
}
.hero-section .hs-container {
  position: relative; z-index: 3;
  max-width: 1600px; margin: 0 auto; padding: 0 24px;
}
.hero-section .hs-cnt { max-width: 640px; }
.hero-section .hs-cnt .hsc-main h1 {
  font-size: clamp(38px, 5.2vw, 62px);
  line-height: 1.08; font-weight: 700; color: #fff;
  margin: 0 0 22px; letter-spacing: -0.5px;
}
.hero-section .hs-cnt .hsc-main h1 em { font-style: normal; color: var(--accent); }
.hero-section .hs-cnt .hsc-main p {
  font-size: 17px; line-height: 1.75; color: rgba(255,255,255,0.88);
  max-width: 600px; margin-bottom: 0;
}
.hero-section .hs-cnt .hero-kicker-native {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--lime-bright); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 20px;
}
.hero-section .hs-cnt .hero-kicker-native::before { content: ''; width: 34px; height: 2px; background: var(--lime-bright); display: inline-block; }
.hero-section .hsc-btn {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-top: 34px;
}
.hero-section .hsc-btn a {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--lime); color: #fff; font-weight: 700;
  font-size: 15px; padding: 15px 34px; border-radius: 100px;
  text-decoration: none; cursor: pointer;
  box-shadow: 0 6px 20px rgba(135,197,37,0.35);
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.hero-section .hsc-btn a:hover { background: #7ab51e; transform: translateY(-2px); }
.hero-section .hsc-btn a.hero-btn-ghost {
  background: transparent; border: 2px solid rgba(255,255,255,0.65);
  box-shadow: none;
}
.hero-section .hsc-btn a.hero-btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

/* Hero 中间标语线 */
.hero-section .hs-middle-box { position: relative; z-index: 3; margin-top: 54px; }
.hero-section .hs-line-wrapper {
  display: flex; align-items: center; justify-content: center; gap: 20px;
}
.hero-section .hs-line-wrapper .left-line,
.hero-section .hs-line-wrapper .hs-right-line {
  height: 2px; background: rgba(255,255,255,0.35); width: 90px;
}
.hero-section .hs-line-text {
  color: var(--lime-bright); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; white-space: nowrap;
}

/* Hero 底部计数器 + 帮助 */
.hero-section .hs-bottom { position: relative; z-index: 3; margin-top: 44px; }
.hero-section .hs-counter {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.18);
}
.hero-section .hsc-water-count h2 {
  font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; color: #fff;
  line-height: 1; letter-spacing: -1px; margin: 0 0 8px;
}
.hero-section .hsc-water-count h2 .count { color: var(--lime-bright); }
.hero-section .hsc-water-count p {
  font-size: 13px; color: rgba(255,255,255,0.78);
  text-transform: uppercase; letter-spacing: 1px; margin: 0;
}
.hero-section .hs-help {
  margin-top: 30px; padding: 16px 20px;
  background: rgba(255,255,255,0.08); border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0; max-width: 620px;
}
.hero-section .hs-help h3 { font-size: 15px; color: #fff; font-weight: 600; margin: 0; line-height: 1.6; }
.hero-section .hs-help h3 b { color: var(--lime-bright); font-weight: 700; }

/* ================= Impact (.impact-section) ================= */
.impact-section {
  background: linear-gradient(120deg, #1b75bb 0%, #1583c7 60%, #1590cf 100%);
  color: #fff; padding: 64px 0;
}
.impact-section .container { max-width: 1600px; margin: 0 auto; padding: 0 24px; }
.impact-section .section-top-title {
  display: flex; align-items: center; gap: 10px;
  color: var(--lime-bright); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; text-align: center;
  justify-content: center; margin-bottom: 12px;
}
.impact-section .section-top-title .blue-dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--lime-bright);
}
.impact-section .impact-hedding {
  font-size: clamp(26px, 3vw, 38px); color: #fff; font-weight: 700;
  line-height: 1.18; margin: 0 0 30px; letter-spacing: -0.4px;
}
.impact-section .impact-content-body {
  display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 40px; align-items: center;
}
.impact-section .impact-stats.is_col7 {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px 40px;
}
.impact-section .impact-stat .impact-count {
  font-size: clamp(36px, 4.4vw, 54px); font-weight: 700; color: #fff;
  line-height: 1; letter-spacing: -1px; margin-bottom: 8px;
}
.impact-section .impact-stat .impact-count .count { color: var(--lime-bright); }
.impact-section .impact-stat p {
  font-size: 14px; color: rgba(255,255,255,0.85);
  margin: 0; line-height: 1.5;
}
.impact-section .impact-video {
  border-radius: 16px; overflow: hidden; box-shadow: 0 14px 40px rgba(0,0,0,0.25);
}
.impact-section .impact-video video {
  display: block; width: 100%; height: auto; object-fit: cover; min-height: 260px;
  background: #012e4a;
}

/* 响应式 */
@media (max-width: 1024px) {
  .impact-section .impact-content-body { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .hero-section { padding: 120px 0 50px; }
  .hero-section .hs-counter { grid-template-columns: repeat(2, 1fr); }
  .impact-section .impact-stats.is_col7 { grid-template-columns: 1fr; }
  .hero-section .hs-line-wrapper .left-line,
  .hero-section .hs-line-wrapper .hs-right-line { width: 30px; }
  .hero-section .hs-line-text { font-size: 12px; }
}

/* ============================================================
   ARIFU 响应式修复：覆盖页面内联 grid 列数，保证手机/平板自适应
   内联 style 属性优先级高于样式表，必须用 !important 在断点内覆盖。
   仅匹配内联的 "repeat(数字,1fr)" 写法；auto-fill/minmax 自适应网格不受影响。
   ============================================================ */
/* 平板（≤1024px）：4列→2列，3列→2列 */
@media (max-width: 1024px) {
  [style*="grid-template-columns:repeat(4,1fr)"],
  [style*="grid-template-columns:repeat(3,1fr)"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}
/* 手机（≤768px）：所有内联多列网格 → 1列，避免卡片挤爆/横向溢出 */
@media (max-width: 768px) {
  [style*="grid-template-columns:repeat(4,1fr)"],
  [style*="grid-template-columns:repeat(3,1fr)"],
  [style*="grid-template-columns:repeat(2,1fr)"],
  [style*="grid-template-columns:repeat(5,1fr)"] {
    grid-template-columns: 1fr !important;
  }
}
/* 超窄屏（≤480px）：再保险，兜底任何内联 repeat() 网格 */
@media (max-width: 480px) {
  [style*="grid-template-columns:repeat("] {
    grid-template-columns: 1fr !important;
  }
}

/* 保证页面在窄屏下不因内联多列网格产生横向滚动 */
html, body { overflow-x: hidden; }
@media (max-width: 480px) {
  img, video, iframe { max-width: 100% !important; height: auto; }
}

/* ============================================================
   关注我们 / 联系我们 组件（二维码 + AI 助手）
   ============================================================ */

/* 右侧悬浮栏 */
.side-tools {
  position: fixed; right: 16px; bottom: 120px; z-index: 9000;
  display: flex; flex-direction: column; gap: 10px;
}
.side-tools .st-btn {
  width: 52px; height: 52px; border-radius: 50%;
  background: #fff; border: 1px solid #e2e8f0; box-shadow: 0 4px 16px rgba(0,0,0,.12);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 24px; color: #0A1F3C; text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
}
.side-tools .st-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.side-tools .st-ai {
  background: linear-gradient(135deg, #014DB2 0%, #0066d6 100%);
  color: #fff; border: none; flex-direction: column; gap: 0;
  width: 60px; height: 60px; font-size: 13px;
}
.side-tools .st-ai .st-ai-ico { font-size: 22px; line-height: 1; }
.side-tools .st-ai .st-ai-label { font-size: 10px; font-weight: 600; margin-top: 2px; }
.side-tools .st-ai:hover {
  animation: aiPulse 1.2s ease infinite;
}
@keyframes aiPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(1,77,178,.5); }
  50% { box-shadow: 0 0 0 10px rgba(1,77,178,0); }
}

/* 二维码弹出面板 */
.qr-popup {
  position: fixed; right: 84px; bottom: 120px; z-index: 9001;
  width: 320px; background: #fff; border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.qr-popup.open { opacity: 1; visibility: visible; transform: translateY(0); }
.qr-popup-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid #f0f0f0;
  font-size: 15px; font-weight: 700; color: #0A1F3C;
}
.qr-popup-head button {
  background: none; border: none; font-size: 24px; cursor: pointer;
  color: #999; line-height: 1;
}
.qr-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 18px;
}
.qr-item { text-align: center; }
.qr-img {
  width: 100%; aspect-ratio: 1; border-radius: 10px; overflow: hidden;
  border: 1px solid #eee; background: #fafafa;
}
.qr-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.qr-name { font-size: 14px; font-weight: 600; color: #333; margin-top: 8px; }
.qr-tip { font-size: 11px; color: #999; margin-top: 3px; line-height: 1.4; }
.qr-tip b { color: #014DB2; }

/* AI 聊天窗口 */
.ai-chat {
  position: fixed; right: 84px; bottom: 120px; z-index: 9001;
  width: 360px; height: 520px; max-height: calc(100vh - 160px);
  background: #fff; border-radius: 16px; display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.ai-chat.open { opacity: 1; visibility: visible; transform: translateY(0); }
.ai-chat-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; background: linear-gradient(135deg, #0A1F3C 0%, #014DB2 100%);
  color: #fff; border-radius: 16px 16px 0 0;
}
.ai-chat-title { display: flex; align-items: center; gap: 10px; }
.ai-chat-avatar { font-size: 26px; }
.ai-chat-name { font-size: 15px; font-weight: 700; }
.ai-chat-status { font-size: 11px; opacity: .8; }
.ai-chat-close { background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; line-height: 1; }
.ai-chat-body {
  flex: 1; overflow-y: auto; padding: 16px; background: #f7f9fc;
  display: flex; flex-direction: column; gap: 10px;
}
.ai-msg {
  max-width: 82%; padding: 10px 14px; border-radius: 12px;
  font-size: 14px; line-height: 1.6; word-break: break-word;
}
.ai-bot { background: #fff; align-self: flex-start; border: 1px solid #e8eef5; }
.ai-user { background: #014DB2; color: #fff; align-self: flex-end; }
.ai-chat-foot { padding: 12px; border-top: 1px solid #eee; background: #fff; border-radius: 0 0 16px 16px; }
.ai-quick { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.ai-quick button {
  border: 1px solid #d0dbe8; background: #f0f4ff; color: #014DB2;
  border-radius: 100px; padding: 4px 12px; font-size: 12px; cursor: pointer;
}
.ai-input-row { display: flex; gap: 8px; }
.ai-input-row input {
  flex: 1; border: 1px solid #ddd; border-radius: 8px; padding: 10px 12px;
  font-size: 14px; outline: none;
}
.ai-input-row input:focus { border-color: #014DB2; }
.ai-input-row button {
  background: #014DB2; color: #fff; border: none; border-radius: 8px;
  padding: 0 18px; font-size: 14px; cursor: pointer; font-weight: 600;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .side-tools { right: 8px; bottom: 80px; gap: 6px; }
  .side-tools .st-btn { width: 42px; height: 42px; font-size: 18px; }
  .side-tools .st-ai { width: 48px; height: 48px; font-size: 11px; }
  .side-tools .st-ai .st-ai-ico { font-size: 18px; }
  .side-tools .st-ai .st-ai-label { font-size: 9px; }
  .qr-popup { right: 8px; left: 8px; width: auto; bottom: 140px; }
  .ai-chat { right: 8px; left: 8px; width: auto; bottom: 140px; height: 480px; }
}

@media (max-width: 380px) {
  .side-tools .st-btn { width: 36px; height: 36px; font-size: 16px; }
  .side-tools .st-ai { width: 42px; height: 42px; }
}

/* ============================================================
   2026-08-14 全局统一优化层
   1. 视频适配（手机竖屏视频不变形、不裁剪）
   2. 移动端字号下限（保证手机可读）
   3. 移动端间距收紧（减少空白）
   4. 内页 H1 字号统一
   ============================================================ */

/* ---- 1. 视频适配：所有 video 保持原始比例居中，杜绝拉伸变形 ---- */
.exp-video video,
video[controls] {
  object-fit: contain !important;
  background: #000;
}
/* 竖屏视频容器：窄屏时自动切换为竖屏比例，避免两侧大黑边 */
@media (max-width: 640px) {
  .exp-video { aspect-ratio: auto !important; }
  .exp-video video { height: auto !important; max-height: 78vh; }
}

/* ---- 2. 移动端字号下限：正文/说明文字不低于 14px ---- */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .exp-video .meta,
  .photo-caption,
  .ww-source,
  .video-desc,
  .case-meta,
  .resource-card p,
  .feature-card p,
  .industry-card .ind-desc,
  .video-info,
  .ww-flow .step p,
  .ww-card p,
  .ww-card .tag,
  .ww-toc li,
  .ww-callout p { font-size: 13px !important; }
  .video-title, .case-title, .feature-card h4 { font-size: 15px !important; }
  table, .ww-data-table, .prod-model-table { font-size: 13px !important; }
}

/* ---- 3. 移动端间距收紧，减少纵向空白 ---- */
@media (max-width: 640px) {
  .subpage-section { padding: 40px 0 !important; }
  .video-section { padding: 40px 0 !important; }
  .section-title { font-size: 22px !important; line-height: 1.3; }
  .section-sub { font-size: 14px !important; }
  .container { padding: 0 16px; }
  .exp-video { margin-bottom: 20px; }
}

/* ---- 4. 内页 H1 统一（桌面 42px / 移动 28px）---- */
.hero h1, .sub-hero h1, .prod-hero h1 {
  letter-spacing: -0.5px;
}
@media (max-width: 640px) {
  .hero h1, .sub-hero h1, .prod-hero h1 { font-size: 28px !important; }
}

/* ---- 5. 图片统一圆角与阴影，杜绝图片重叠/突兀 ---- */
.img-ph img,
.photo-frame img,
.case-cover img {
  border-radius: 10px;
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
/* 统一内容图片比例：避免源图尺寸差异导致的参差不齐 */
.img-ph {
  border-radius: 12px;
  overflow: hidden;
  margin: 16px 0;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
}
.img-ph img {
  aspect-ratio: 4 / 3;
}
/* 竖屏场景图（产品实拍等）保持原比例，不强制 16:9 */
.photo-frame img {
  aspect-ratio: auto;
}

/* ============================================================
   响应式统一修复层（2026-08-15）
   目标：电脑各分辨率 + 不同手机屏幕自适应，解决
   1) 上下宽中间窄  2) 文字太小  3) 字体/颜色不统一
   4) 图片变形交错  5) 视频太小  6) 手机布局
   ============================================================ */

/* ---- 1. 全局字体与基础字号统一 ---- */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  font-size: 18px;
  line-height: 1.4;
  font-family: "Helvetica Neue", "Inter", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- 2. 容器宽度统一：1328px 居中（Moleaer 规范） ---- */
.container {
  max-width: 1328px !important;
  width: 100%;
  margin: 0 auto !important;
  padding-left: 24px !important;
  padding-right: 24px !important;
}
/* 修正散落在各处的固定 max-width 内联块，统一向容器看齐 */
[style*="max-width:1600px"],
[style*="max-width:1400px"],
[style*="max-width:1200px"],
[style*="max-width:1100px"],
[style*="max-width:1000px"],
[style*="max-width:960px"],
[style*="max-width:920px"],
[style*="max-width:900px"],
[style*="max-width:860px"],
[style*="max-width:820px"],
[style*="max-width:800px"],
[style*="max-width:780px"],
[style*="max-width:760px"],
[style*="max-width:740px"],
[style*="max-width:720px"],
[style*="max-width:700px"],
[style*="max-width:680px"],
[style*="max-width:640px"],
[style*="max-width:620px"],
[style*="max-width:600px"] {
  max-width: 100% !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* ---- 3. 图片自适应：绝不变形、不溢出 ---- */
img {
  max-width: 100%;
  height: auto;
}
img[style*="width"] {
  height: auto;
}
.photo-frame img,
.img-ph img,
.case-cover img,
[class*="photo"] img,
[class*="img"] img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 10px;
}
/* 保持竖屏图原始比例，避免被强制 16:9 拉伸 */
.photo-frame img {
  object-fit: contain;
  background: #f8fafc;
}

/* ---- 4. 视频统一 16:9，移动端全宽 ---- */
.exp-video,
.video-wrap,
[class*="video"] {
  width: 100%;
  max-width: 100%;
}
.exp-video video,
.video-wrap video {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  display: block;
  border-radius: 12px;
  background: #000;
}
iframe[src*="video"],
iframe[src*="player"],
iframe[src*="youtube"],
iframe[src*="bilibili"] {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  border: 0;
}

/* ---- 5. 小字号整体抬升，杜绝 12-13px 拥挤 ---- */
p, li, td, th, .desc, .text, [class*="desc"], [class*="caption"] {
  font-size: 15px;
}
[style*="font-size:12px"] { font-size: 13px !important; }
[style*="font-size:11px"] { font-size: 12px !important; }
[style*="font-size:10px"] { font-size: 12px !important; }

/* ---- 6. 网格统一：桌面多列，随屏宽自适应折行 ---- */
[style*="grid-template-columns"] {
  display: grid !important;
}

/* ============================================================
   断点统一：1024 / 768 / 480 三档
   ============================================================ */

/* 平板（≤1024px） */
@media (max-width: 1024px) {
  .container { padding-left: 18px !important; padding-right: 18px !important; }
  body { font-size: 15px; }
  h1 { font-size: 34px !important; }
  h2 { font-size: 28px !important; }
  /* 4 列降 2 列 */
  [style*="grid-template-columns:repeat(4"],
  [style*="grid-template-columns: repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  /* 3 列降 2 列 */
  [style*="grid-template-columns:repeat(3"],
  [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .kpi-grid { grid-template-columns: repeat(2, 1fr) !important; }
}

/* 手机横屏 / 小平板（≤768px） */
@media (max-width: 768px) {
  body { font-size: 16px; }
  h1 { font-size: 28px !important; }
  h2 { font-size: 24px !important; }
  h3 { font-size: 19px !important; }
  .container { padding-left: 14px !important; padding-right: 14px !important; }
  /* 所有多列降单列，杜绝横向挤压 */
  [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }
  .photo-grid-2,
  .photo-grid-3,
  .kpi-grid,
  .feature-grid {
    grid-template-columns: 1fr !important;
  }
  /* 内页 hero 高度压缩 */
  .sub-hero { padding: 90px 0 40px !important; }
  .sub-hero h1 { font-size: 26px !important; }
  /* 表格横向可滚动，避免溢出 */
  table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* 手机（≤480px） */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .container { padding-left: 16px !important; padding-right: 16px !important; }
  h1 { font-size: 26px !important; }
  h2 { font-size: 23px !important; }
  .nav-cta { display: none; }
  /* 按钮全宽，方便触控 */
  .cta-actions a,
  .cta-actions button {
    width: 100%;
    text-align: center;
  }
  /* 视频与图片间距收紧 */
  .exp-video, .photo-frame, .img-ph { margin-bottom: 12px; }
}

/* ============================================================
   视频增强层（2026-08-15）
   1) 视频容器放大、不变形  2) 点击放大两档(50%屏/全屏)
   3) 一键放大/一键恢复
   ============================================================ */

/* 视频容器统一放大，填满不黑边 */
.video-embed,
.exp-video,
.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 12px;
  background: #000;
  cursor: pointer;
}
/* 视频本体：cover 填满容器（不变形拉伸），保留 controls */
.video-embed video,
.exp-video video,
.video-wrap video {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;   /* 关键：从 contain 改为 cover，消除黑边 */
  background: #000 !important;
  display: block !important;
  cursor: pointer;
}
/* 竖屏视频在横容器里 cover 会裁切，用 contain 兜底（更完整展示） */
.video-embed.is-portrait video,
.exp-video.is-portrait video {
  object-fit: contain !important;
}

/* 放大悬浮层：覆盖全屏的遮罩 */
.video-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0, 0, 0, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  cursor: zoom-out;
}
.video-lightbox.active {
  display: flex;
}
.video-lightbox .vb-stage {
  position: relative;
  width: 90vw;
  max-width: 1280px;
  transition: width 0.35s ease;
}
.video-lightbox .vb-stage.vb-half {
  width: 50vw;   /* 一档：50% 屏幕 */
}
.video-lightbox .vb-stage.vb-full {
  width: 100vw;   /* 二档：全屏 */
  max-width: 100vw;
  height: 100vh;
}
.video-lightbox .vb-stage video {
  width: 100%;
  height: auto;
  max-height: 82vh;
  display: block;
  border-radius: 10px;
  background: #000;
}
.video-lightbox .vb-stage.vb-full video {
  height: 100vh;
  max-height: 100vh;
  object-fit: contain;
  border-radius: 0;
}
/* 放大控制条：固定于屏幕底部，全屏时仍可见可点 */
.video-lightbox .vb-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100001;
  flex-wrap: wrap;
}
.video-lightbox .vb-controls button {
  padding: 10px 22px;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  backdrop-filter: blur(6px);
}
.video-lightbox .vb-controls button:hover {
  background: rgba(255,255,255,0.28);
  border-color: #fff;
}
.video-lightbox .vb-controls .vb-close {
  background: #e11d48;
  border-color: #e11d48;
}
.video-lightbox .vb-title {
  color: rgba(255,255,255,0.9);
  font-size: 13px;
  margin-top: 10px;
  max-width: 80vw;
  text-align: center;
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100001;
}

/* 移动端视频增强 */
@media (max-width: 768px) {
  .video-lightbox .vb-stage.vb-half { width: 90vw; }
  .video-lightbox .vb-controls button { padding: 8px 16px; font-size: 13px; }
}