/* ==========================================================================
   成都悟软软件有限公司 官网样式
   设计基调：深蓝科技感 · 响应式 · 高性能
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --navy-950: #060f24;
  --navy-900: #08142e;
  --navy-800: #0a1e4a;
  --navy-700: #10306e;
  --navy-600: #1b3f85;
  --blue: #2563eb;
  --blue-2: #3b82f6;
  --cyan: #06b6d4;
  --bg: #f5f7fc;
  --white: #ffffff;
  --t1: #16223c;
  --t2: #4a5a7d;
  --t3: #8494b5;
  --line: #e7ecf6;
  --grad: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --grad-soft: linear-gradient(135deg, #3b82f6 0%, #22d3ee 100%);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 8px 30px rgba(10, 30, 74, .08);
  --shadow-lg: 0 24px 60px rgba(10, 30, 74, .14);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
  --font-num: Inter, "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--t1);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
::selection { background: rgba(37, 99, 235, .18); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 92px 0; }
.section.on-dark { background: var(--navy-900); }
.section.on-light { background: var(--white); }

/* ---------- 栏目标题 ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: 2px; color: var(--blue-2);
  font-weight: 600; text-transform: uppercase;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(37, 99, 235, .08);
  border: 1px solid rgba(37, 99, 235, .14);
  margin-bottom: 16px;
}
.sec-eyebrow::before { content: ""; width: 16px; height: 2px; background: var(--grad); border-radius: 2px; }
.sec-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; letter-spacing: 1px; color: var(--navy-800); line-height: 1.3; }
.on-dark .sec-title { color: #fff; }
.sec-sub { margin-top: 14px; font-size: 16px; color: var(--t2); }
.on-dark .sec-sub { color: rgba(255, 255, 255, .66); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 16px; font-weight: 600; line-height: 1;
  padding: 15px 28px; border-radius: 12px;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 10px 26px rgba(37, 99, 235, .34);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(37, 99, 235, .44); }
.btn-outline {
  background: transparent; color: var(--navy-800);
  border: 1.5px solid rgba(10, 30, 74, .22);
}
.btn-outline:hover { border-color: var(--blue-2); color: var(--blue-2); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255, 255, 255, .08); color: #fff;
  border: 1px solid rgba(255, 255, 255, .22);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .16); transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; }

/* ---------- 页头导航 ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding: 18px 0;
}
.header.scrolled {
  background: rgba(250, 251, 255, .88);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 6px 24px rgba(10, 30, 74, .07);
  padding: 10px 0;
}
.header-inner { display: flex; align-items: center; gap: 28px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo img { width: 42px; height: 42px; border-radius: 10px; object-fit: contain; background: #fff; padding: 2px; }
.logo-txt { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name { font-size: 17px; font-weight: 700; color: var(--navy-800); letter-spacing: 1px; }
.header:not(.scrolled) .logo-name { color: #fff; }
.logo-sub { font-size: 11px; color: var(--t3); letter-spacing: 2px; }
.header:not(.scrolled) .logo-sub { color: rgba(255, 255, 255, .55); }

.nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-link {
  display: flex; align-items: center; gap: 5px;
  padding: 10px 16px; border-radius: 10px;
  font-size: 15px; font-weight: 500; color: var(--navy-800);
  transition: color .2s, background .2s;
}
.header:not(.scrolled) .nav-link { color: rgba(255, 255, 255, .9); }
.nav-link:hover { color: var(--blue-2); background: rgba(37, 99, 235, .06); }
.header:not(.scrolled) .nav-link:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.nav-link.active { color: var(--blue-2); font-weight: 600; }
.header:not(.scrolled) .nav-link.active { color: #fff; }
.nav-link .caret { width: 10px; height: 10px; transition: transform .25s; }
.has-drop:hover .caret { transform: rotate(180deg); }

.dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 210px; padding: 8px;
  background: rgba(255, 255, 255, .98); border-radius: 14px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  opacity: 0; visibility: hidden; transition: opacity .25s, transform .25s, visibility .25s;
}
.has-drop { position: relative; }
.has-drop:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: block; padding: 10px 14px; border-radius: 9px;
  font-size: 14px; color: var(--t1); transition: background .2s, color .2s;
}
.dropdown a:hover { background: rgba(37, 99, 235, .08); color: var(--blue-2); }
.dropdown a small { display: block; font-size: 12px; color: var(--t3); font-weight: 400; }

.header-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-tel { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; }
.header-tel svg { width: 18px; height: 18px; color: var(--blue-2); }
.header:not(.scrolled) .header-tel { color: #fff; }
.header:not(.scrolled) .header-tel svg { color: #6db2ff; }
.header .btn { padding: 11px 20px; font-size: 14px; }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 110; }
.hamburger span { width: 24px; height: 2px; background: var(--navy-800); border-radius: 2px; transition: .3s; }
.header:not(.scrolled) .hamburger span { background: #fff; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端导航抽屉 */
.mobile-nav {
  position: fixed; inset: 0; z-index: 105;
  background: linear-gradient(160deg, var(--navy-900), var(--navy-700));
  padding: 96px 28px 40px;
  display: flex; flex-direction: column; gap: 6px;
  transform: translateX(100%); transition: transform .35s ease;
  overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a.m-link {
  display: block; padding: 15px 4px; border-bottom: 1px solid rgba(255, 255, 255, .08);
  color: #fff; font-size: 17px; font-weight: 500;
}
.mobile-nav a.m-link:hover { color: #6db2ff; }
.mobile-nav .m-group { border-bottom: 1px solid rgba(255, 255, 255, .08); padding: 12px 0; }
.mobile-nav .m-group-title { color: rgba(255, 255, 255, .7); font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.mobile-nav .m-group a { display: block; padding: 9px 4px; color: rgba(255, 255, 255, .82); font-size: 15px; }
.mobile-nav .m-group a:hover { color: #fff; }
.mobile-nav .m-contact { margin-top: auto; padding-top: 24px; color: #fff; }
.mobile-nav .m-contact a { display: block; padding: 8px 0; color: #9cc3ff; font-size: 16px; }
.mobile-nav-overlay {
  position: fixed; inset: 0; background: rgba(6, 15, 36, .5); z-index: 104;
  opacity: 0; visibility: hidden; transition: .3s;
}
.mobile-nav-overlay.show { opacity: 1; visibility: visible; }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff;
  padding: 168px 0 96px;
  background:
    radial-gradient(55% 45% at 12% 8%, rgba(37, 99, 235, .32), transparent 62%),
    radial-gradient(45% 40% at 88% 88%, rgba(6, 182, 212, .22), transparent 60%),
    linear-gradient(135deg, var(--navy-950) 0%, var(--navy-800) 55%, #0e2c5e 100%);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(75% 75% at 50% 35%, #000, transparent);
          mask-image: radial-gradient(75% 75% at 50% 35%, #000, transparent);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 2px; color: #9cc3ff;
  padding: 8px 16px; border-radius: 999px;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(6px); margin-bottom: 24px;
}
.hero-eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 10px #4ade80; }
.hero-h1 {
  font-size: clamp(32px, 4.6vw, 52px); font-weight: 800; line-height: 1.22; letter-spacing: 1px;
}
.grad-text {
  background: linear-gradient(92deg, #8ab6ff 0%, #4ef0e6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 22px 0 32px; font-size: 17px; color: rgba(255, 255, 255, .78); max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; color: rgba(255, 255, 255, .82);
  padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .12);
}
.hero-tag svg { width: 14px; height: 14px; color: #6db2ff; }

/* Hero 右侧视觉 */
.hero-visual { position: relative; }
.code-card {
  position: relative;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 22px; backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px rgba(2, 8, 30, .5);
  padding: 20px;
}
.code-head { display: flex; align-items: center; gap: 7px; padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.code-head i { width: 11px; height: 11px; border-radius: 50%; }
.code-head i:nth-child(1) { background: #ff5f57; }
.code-head i:nth-child(2) { background: #febc2e; }
.code-head i:nth-child(3) { background: #28c840; }
.code-head span { margin-left: 8px; font-size: 12px; color: rgba(255, 255, 255, .5); font-family: var(--font-num); }
.code-body { padding: 18px 4px 6px; font-family: var(--font-num); font-size: 13px; line-height: 2; }
.code-line { white-space: nowrap; }
.c-k { color: #7dd3fc; } .c-v { color: #e2e8f0; } .c-f { color: #86efac; } .c-s { color: #fbbf24; } .c-o { color: rgba(255,255,255,.45); }
.code-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.code-chip {
  font-size: 12px; color: #d6e4ff; padding: 6px 12px; border-radius: 999px;
  background: rgba(37, 99, 235, .22); border: 1px solid rgba(109, 178, 255, .3);
}
.float-badge {
  position: absolute; display: flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, .94); color: var(--navy-800);
  border-radius: 14px; padding: 12px 18px;
  box-shadow: var(--shadow-lg);
  animation: floatY 5s ease-in-out infinite;
}
.float-badge b { font-size: 20px; font-family: var(--font-num); line-height: 1; }
.float-badge span { font-size: 12px; color: var(--t2); }
.fb-1 { top: -26px; right: 6%; }
.fb-2 { bottom: 34px; left: -30px; animation-delay: 1.4s; }
.fb-2 b { color: var(--blue-2); }

@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* ---------- 数据信任条 ---------- */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 44px 0; }
.stat { text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: -12px; top: 12%; height: 76%; width: 1px; background: var(--line); }
.stat-num {
  font-family: var(--font-num); font-size: clamp(34px, 4vw, 46px); font-weight: 800;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1.1;
}
.stat-num em { font-style: normal; font-size: .62em; margin-left: 2px; }
.stat-label { margin-top: 8px; font-size: 14px; color: var(--t2); }

/* ---------- 服务 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.service-card {
  background: var(--white); border-radius: var(--radius); padding: 30px 24px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative; overflow: hidden;
}
.service-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, .25); }
.service-card:hover::after { transform: scaleX(1); }
.service-icon {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 20px;
  background: rgba(37, 99, 235, .08);
  display: flex; align-items: center; justify-content: center;
}
.service-icon svg { width: 26px; height: 26px; stroke: var(--blue-2); }
.service-card:nth-child(2) .service-icon { background: rgba(6, 182, 212, .1); }
.service-card:nth-child(2) .service-icon svg { stroke: var(--cyan); }
.service-card:nth-child(3) .service-icon { background: rgba(99, 102, 241, .1); }
.service-card:nth-child(3) .service-icon svg { stroke: #6366f1; }
.service-card:nth-child(4) .service-icon { background: rgba(20, 184, 166, .1); }
.service-card:nth-child(4) .service-icon svg { stroke: #14b8a6; }
.service-card:nth-child(5) .service-icon { background: rgba(244, 114, 182, .1); }
.service-card:nth-child(5) .service-icon svg { stroke: #f472b6; }
.service-title { font-size: 18px; font-weight: 700; color: var(--navy-800); margin-bottom: 10px; }
.service-desc { font-size: 14px; color: var(--t2); flex: 1; }
.service-link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  font-size: 14px; font-weight: 600; color: var(--blue-2);
}
.service-link svg { width: 15px; height: 15px; transition: transform .25s; }
.service-card:hover .service-link svg { transform: translateX(4px); }

/* ---------- 解决方案（行业） ---------- */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.solution-card {
  background: var(--white); border-radius: var(--radius); padding: 30px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.sol-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.sol-head svg { width: 30px; height: 30px; stroke: var(--blue-2); }
.sol-title { font-size: 19px; font-weight: 700; color: var(--navy-800); }
.sol-desc { font-size: 14px; color: var(--t2); margin-bottom: 16px; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12px; color: var(--t2); padding: 5px 12px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line);
}

/* ---------- 开发流程 ---------- */
.process-steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; position: relative; }
.step { text-align: center; position: relative; padding: 0 6px; }
.step-num {
  width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 50%;
  background: var(--grad); color: #fff; font-family: var(--font-num); font-size: 20px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 26px rgba(37, 99, 235, .35);
  position: relative; z-index: 2;
}
.step-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 1.6; }
.step::after {
  content: ""; position: absolute; top: 26px; left: calc(50% + 34px); width: calc(100% - 68px);
  height: 2px; background: linear-gradient(90deg, rgba(59,130,246,.5), rgba(34,211,238,.12));
  z-index: 1;
}
.step:last-child::after { display: none; }

/* ---------- 技术栈 ---------- */
.tech-wrap { max-width: 900px; margin: 0 auto; text-align: center; }
.tech-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.tag-tech {
  font-size: 14px; color: var(--t1); padding: 10px 20px; border-radius: 999px;
  background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: transform .25s, border-color .25s, box-shadow .25s;
  font-family: var(--font-num);
}
.tag-tech:hover { transform: translateY(-3px); border-color: rgba(37, 99, 235, .4); box-shadow: var(--shadow-lg); }

/* ---------- 代表案例 ---------- */
.cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.case-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform .3s, box-shadow .3s;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.case-top { position: relative; height: 150px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.case-top::before { content: ""; position: absolute; inset: 0; background: var(--case-grad, var(--grad)); opacity: .9; }
.case-top::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 22px 22px;
}
.case-top svg { position: relative; z-index: 2; width: 52px; height: 52px; stroke: #fff; filter: drop-shadow(0 4px 12px rgba(0,0,0,.25)); }
.case-cat {
  position: absolute; z-index: 2; top: 14px; left: 14px;
  font-size: 11px; color: #fff; padding: 4px 10px; border-radius: 999px;
  background: rgba(0, 0, 0, .22); backdrop-filter: blur(4px); letter-spacing: 1px;
}
.case-body { padding: 20px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.case-title { font-size: 16px; font-weight: 700; color: var(--navy-800); margin-bottom: 8px; }
.case-desc { font-size: 13px; color: var(--t2); flex: 1; }
.case-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.case-tags .tag { font-size: 11px; padding: 3px 9px; }

/* ---------- 为什么选择我们 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.why-card {
  background: var(--white); border-radius: var(--radius); padding: 30px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.why-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(37, 99, 235, .09); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.why-icon svg { width: 24px; height: 24px; stroke: var(--blue-2); }
.why-title { font-size: 17px; font-weight: 700; color: var(--navy-800); margin-bottom: 8px; }
.why-desc { font-size: 14px; color: var(--t2); }

/* ---------- 客户/合作伙伴 ---------- */
.clients { background: var(--white); }
.client-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.client-logo {
  flex: 0 1 170px; height: 72px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 600; color: var(--t3); letter-spacing: 1px;
  transition: all .3s;
}
.client-logo img { max-height: 44px; width: auto; filter: grayscale(1); opacity: .7; transition: filter .3s, opacity .3s; }
.client-logo:hover { color: var(--blue-2); border-color: rgba(37, 99, 235, .3); background: #fff; box-shadow: var(--shadow); }
.client-logo:hover img { filter: grayscale(0); opacity: 1; }

/* ---------- 知识 ---------- */
.knowledge-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.article-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
  display: flex; flex-direction: column;
}
.article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.art-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.art-cat { display: inline-block; font-size: 12px; font-weight: 600; color: var(--blue-2); margin-bottom: 10px; }
.art-title { font-size: 16px; font-weight: 700; color: var(--navy-800); line-height: 1.5; margin-bottom: 10px; }
.art-excerpt { font-size: 13px; color: var(--t2); flex: 1; }
.art-meta { margin-top: 16px; font-size: 12px; color: var(--t3); display: flex; gap: 14px; }

/* ---------- 联系 CTA ---------- */
.cta-section { position: relative; overflow: hidden; }
.cta-card {
  position: relative; border-radius: 26px; padding: 56px 60px;
  background:
    radial-gradient(50% 60% at 10% 20%, rgba(37, 99, 235, .4), transparent 60%),
    radial-gradient(40% 50% at 90% 90%, rgba(6, 182, 212, .3), transparent 60%),
    linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff; overflow: hidden;
}
.cta-card::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 820px; margin: 0 auto; }
.cta-title { font-size: clamp(24px, 3vw, 34px); font-weight: 800; letter-spacing: 1px; }
.cta-sub { margin: 14px 0 36px; color: rgba(255, 255, 255, .72); font-size: 16px; }
.cta-channels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; text-align: left; }
.cta-channel {
  display: flex; align-items: center; gap: 14px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 16px; padding: 18px 20px;
  transition: background .25s, transform .25s;
}
.cta-channel:hover { background: rgba(255, 255, 255, .14); transform: translateY(-3px); }
.cta-channel svg { width: 30px; height: 30px; stroke: #7dc4ff; flex-shrink: 0; }
.cta-channel .c-label { font-size: 12px; color: rgba(255, 255, 255, .6); }
.cta-channel .c-value { font-size: 16px; font-weight: 700; margin-top: 2px; word-break: break-all; }
.cta-channel a:hover .c-value { color: #9cc3ff; }
.cta-qr { display: flex; align-items: center; gap: 14px; }
.cta-qr img { width: 64px; height: 64px; border-radius: 10px; background: #fff; padding: 4px; object-fit: contain; }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy-950); color: rgba(255, 255, 255, .66); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 60px 0 48px; }
.footer-brand .logo-name { color: #fff; }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.9; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: #9cc3ff; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14px; }
.footer-contact svg { width: 17px; height: 17px; stroke: #6db2ff; flex-shrink: 0; margin-top: 3px; }
.footer-contact a:hover { color: #9cc3ff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; }
.footer-bottom a { color: rgba(255, 255, 255, .7); }
.footer-bottom a:hover { color: #9cc3ff; }
.footer-links { display: flex; gap: 18px; }

/* ---------- 浮动联系条 ---------- */
.float-contact { position: fixed; right: 20px; bottom: 24px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.float-contact .fc-btn {
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; box-shadow: var(--shadow-lg);
  transition: transform .25s;
}
.float-contact .fc-btn:hover { transform: scale(1.08); }
.fc-tel { background: var(--grad); }
.fc-tel svg { width: 22px; height: 22px; }
.fc-wechat { background: #07c160; }
.fc-wechat svg { width: 22px; height: 22px; }
.fc-qr-wrap { position: relative; }
.fc-qr-pop {
  position: absolute; right: 64px; bottom: 0;
  background: #fff; border-radius: 14px; padding: 14px; box-shadow: var(--shadow-lg);
  border: 1px solid var(--line); width: 160px; text-align: center;
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: .25s;
}
.fc-qr-wrap:hover .fc-qr-pop { opacity: 1; visibility: visible; transform: translateY(0); }
.fc-qr-pop img { width: 100%; border-radius: 8px; margin-bottom: 6px; }
.fc-qr-pop p { font-size: 12px; color: var(--t1); }

/* ---------- 滚动淡入 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .step::after { display: none; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  .header-inner { justify-content: space-between; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: 132px 0 72px; }
  .hero-visual { max-width: 480px; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .stat:nth-child(3)::before { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-channels { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .fb-2 { left: -6px; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .cases-grid, .knowledge-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; }
  .cta-card { padding: 40px 24px; }
  .footer-top { grid-template-columns: 1fr; }
  .float-contact { right: 14px; bottom: 18px; }
  .hero-actions .btn { flex: 1; min-width: 150px; }
}

/* ==========================================================================
   内页样式（page-hero / 面包屑 / 排版 / 组件）
   ========================================================================== */
.page-hero {
  position: relative; color: #fff; padding: 150px 0 72px; overflow: hidden;
  background:
    radial-gradient(55% 60% at 12% 0%, rgba(37, 99, 235, .35), transparent 60%),
    radial-gradient(40% 55% at 95% 100%, rgba(6, 182, 212, .22), transparent 55%),
    linear-gradient(135deg, var(--navy-950) 0%, var(--navy-800) 60%, #0e2c5e 100%);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(75% 75% at 50% 20%, #000, transparent);
          mask-image: radial-gradient(75% 75% at 50% 20%, #000, transparent);
  pointer-events: none;
}
.page-hero-inner { position: relative; z-index: 2; }
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  font-size: 13px; color: rgba(255, 255, 255, .5); margin-bottom: 18px;
}
.breadcrumb a { color: rgba(255, 255, 255, .75); transition: color .2s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .55; }
.page-title { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: 1px; line-height: 1.25; }
.page-sub { margin-top: 16px; font-size: 16px; line-height: 1.9; color: rgba(255, 255, 255, .75); max-width: 780px; }

.content { padding: 78px 0; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }
.lead { font-size: 17px; line-height: 1.95; color: var(--t2); }
.text-block p + p { margin-top: 16px; }
.sec-tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px; font-weight: 600;
  color: var(--blue-2); text-transform: uppercase; margin-bottom: 12px;
}
.sec-title-sm { font-size: clamp(22px, 2.6vw, 30px); font-weight: 700; color: var(--navy-800); line-height: 1.35; }
.content .sec-title-sm { margin-bottom: 16px; }

/* 两栏分栏 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.rev .split-body { order: 2; }

/* 复选特性列表 */
.list-check li { display: flex; gap: 12px; align-items: flex-start; padding: 8px 0; font-size: 15px; color: var(--t1); line-height: 1.7; }
.list-check svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 3px; color: var(--blue-2); }
.list-check li strong { color: var(--navy-800); font-weight: 600; }

/* 编号流程（浅色版） */
.num-list { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.num-item {
  counter-increment: step; background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); position: relative;
}
.num-item::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-num); font-size: 40px; font-weight: 800; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: .9; display: block; margin-bottom: 14px;
}
.num-item h3 { font-size: 17px; font-weight: 700; color: var(--navy-800); margin-bottom: 8px; }
.num-item p { font-size: 14px; color: var(--t2); }

/* 标签云（方案页用） */
.big-tags { display: flex; flex-wrap: wrap; gap: 14px; }
.big-tag {
  display: flex; align-items: center; gap: 10px; padding: 16px 22px;
  background: var(--white); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); font-size: 15px; font-weight: 600; color: var(--navy-800);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.big-tag:hover { transform: translateY(-3px); border-color: rgba(37, 99, 235, .35); box-shadow: var(--shadow-lg); }
.big-tag svg { width: 22px; height: 22px; stroke: var(--blue-2); }

/* 联系方式卡 */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.info-card {
  display: flex; gap: 18px; align-items: flex-start; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s;
}
.info-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.ic-icon {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  background: rgba(37, 99, 235, .08); display: flex; align-items: center; justify-content: center;
}
.ic-icon svg { width: 24px; height: 24px; stroke: var(--blue-2); }
.ic-label { font-size: 12px; color: var(--t3); letter-spacing: 1px; margin-bottom: 4px; }
.ic-value { font-size: 19px; font-weight: 700; color: var(--navy-800); word-break: break-all; }
.ic-value a:hover { color: var(--blue-2); }
.ic-extra { font-size: 13px; color: var(--t2); margin-top: 6px; }
.qr-card {
  display: flex; gap: 24px; align-items: center; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow);
}
.qr-card img { width: 148px; height: 148px; border-radius: 12px; background: #fff; object-fit: contain; flex-shrink: 0; }
.qr-card p { font-size: 15px; color: var(--t2); line-height: 1.9; }
.qr-card p strong { color: var(--navy-800); font-size: 17px; }

/* 提示框 */
.note-box {
  display: flex; gap: 12px; align-items: flex-start; padding: 18px 22px;
  background: rgba(37, 99, 235, .06); border: 1px solid rgba(37, 99, 235, .16);
  border-radius: 14px; font-size: 14px; color: var(--t2); line-height: 1.8;
}
.note-box svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; }
.note-box b { color: var(--blue-2); font-weight: 600; }

/* 案例/文章分类 chips */
.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.cat-chip {
  font-size: 14px; color: var(--t2); padding: 9px 20px; border-radius: 999px;
  background: var(--white); border: 1px solid var(--line); transition: all .25s;
}
.cat-chip.on { color: #fff; background: var(--grad); border-color: transparent; box-shadow: 0 8px 20px rgba(37, 99, 235, .3); }
.cat-chip:not(.on):hover { color: var(--blue-2); border-color: rgba(37, 99, 235, .35); }

/* 页面底部留白区 */
.section-foot { text-align: center; padding: 46px 0 0; }
.section-foot p { color: var(--t2); margin-bottom: 18px; }

/* 文章详情排版 */
.post-meta {
  display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center;
  color: var(--t3); font-size: 13px; padding-bottom: 18px;
  border-bottom: 1px solid var(--line); margin-bottom: 26px;
}
.post-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--t3); }
.post-body h2 { font-size: 21px; color: var(--navy-800); font-weight: 700; margin: 32px 0 12px; line-height: 1.45; }
.post-body h3 { font-size: 17px; color: var(--navy-800); font-weight: 700; margin: 22px 0 8px; }
.post-body p { margin-bottom: 16px; }
.post-body ul, .post-body ol { margin: 0 0 16px; }
.post-body ul li { position: relative; padding: 5px 0 5px 24px; color: var(--t2); }
.post-body ul li::before { content: ""; position: absolute; left: 2px; top: 14px; width: 8px; height: 8px; border-radius: 2px; background: var(--grad); }
.post-body ol { counter-reset: li; padding-left: 0; }
.post-body ol li { position: relative; padding: 5px 0 5px 34px; color: var(--t2); counter-increment: li; }
.post-body ol li::before {
  content: counter(li); position: absolute; left: 0; top: 7px;
  width: 22px; height: 22px; border-radius: 7px; font-size: 12px; font-weight: 700;
  background: rgba(37, 99, 235, .1); color: var(--blue-2);
  display: flex; align-items: center; justify-content: center;
}
.post-body .post-callout {
  padding: 16px 20px; border-radius: 14px; margin: 20px 0;
  background: linear-gradient(135deg, rgba(37,99,235,.07), rgba(6,182,212,.07));
  border: 1px solid rgba(37,99,235,.16); color: var(--t1);
}
.post-body .post-callout b { color: var(--blue-2); }
.post-body .post-table { width: 100%; border-collapse: collapse; margin: 8px 0 22px; font-size: 14px; }
.post-body .post-table th, .post-body .post-table td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.post-body .post-table th { background: var(--bg); color: var(--navy-800); font-weight: 600; white-space: nowrap; }
.post-body .post-table td { color: var(--t2); }
@media (max-width: 600px) { .post-body .post-table { display: block; overflow-x: auto; white-space: nowrap; } }

/* 服务速览深色卡 */
.side-card {
  background: linear-gradient(150deg, var(--navy-800), var(--navy-700));
  color: #fff; border-radius: 22px; padding: 34px; box-shadow: var(--shadow-lg);
}
.side-card h3 { color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.side-card .sc-cap { font-size: 13px; color: rgba(255, 255, 255, .55); margin-bottom: 16px; letter-spacing: 1px; }
.side-card ul li {
  display: flex; gap: 10px; align-items: center; padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  font-size: 14px; color: rgba(255, 255, 255, .88); line-height: 1.6;
}
.side-card ul li:last-child { border-bottom: none; }
.side-card ul svg { width: 17px; height: 17px; color: #6db2ff; flex-shrink: 0; }
.side-card .side-big {
  font-size: 40px; font-weight: 800; font-family: var(--font-num); line-height: 1;
  background: linear-gradient(92deg, #8ab6ff, #4ef0e6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.side-card .side-big small { font-size: 15px; color: rgba(255,255,255,.6); font-family: var(--font); font-weight: 500; }

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.rev .split-body { order: 0; }
  .num-list { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 128px 0 56px; }
}
@media (max-width: 600px) {
  .num-list { grid-template-columns: 1fr; }
  .content { padding: 56px 0; }
  .qr-card { flex-direction: column; align-items: flex-start; }
}