/* ============================================================
   zz-zd.com · 智达网络 · 全站核心样式 style.css
   设计语言：校园简约 · 藏青 + 浅灰 + 纯白 · 斜切渐变新锐布局
   说明：本文件承载全站公共样式，各页面通过不同模块组合形成独立版式。
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --navy-900: #0e1830;
  --navy-800: #14213c;
  --navy-700: #1b2a4a;
  --navy-600: #24365f;
  --navy-500: #2f446f;
  --blue-500: #3a5db0;
  --blue-400: #4f74c9;
  --blue-300: #6f8fd9;
  --gray-50:  #fbfcfe;
  --gray-100: #f3f5f9;
  --gray-200: #e7ebf2;
  --gray-300: #d6dce8;
  --gray-400: #aeb8c9;
  --gray-500: #7d889b;
  --gray-600: #5a6577;
  --gray-700: #3c4657;
  --ink: #16213a;
  --grad-navy: linear-gradient(135deg, #14213c 0%, #1b2a4a 45%, #2f446f 100%);
  --grad-blue: linear-gradient(135deg, #2f446f 0%, #3a5db0 100%);
  --grad-soft: linear-gradient(135deg, #f3f5f9 0%, #e7ebf2 100%);
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-1: 0 6px 18px rgba(20, 33, 60, .06);
  --shadow-2: 0 14px 40px rgba(20, 33, 60, .12);
  --shadow-3: 0 24px 60px rgba(20, 33, 60, .16);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray-700);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; border: 0; display: block; }
a { color: var(--navy-600); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--blue-500); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .5em;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .01em;
}
p { margin: 0 0 1em; }
b, strong { color: var(--ink); font-weight: 600; }
button { font-family: inherit; cursor: pointer; }
svg { vertical-align: middle; }
::selection { background: var(--navy-700); color: #fff; }

/* ---------- 布局容器 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container.wide { max-width: 1320px; }
.sec { padding: 96px 0; }
.sec-sm { padding: 60px 0; }
.sec-tight { padding: 0; }
.sec-white { background: #fff; }
.sec-gray { background: var(--gray-100); }
.sec-soft { background: var(--grad-soft); }
.sec-navy { background: var(--grad-navy); color: rgba(255,255,255,.82); }
.sec-navy .sec-title, .sec-navy h2, .sec-navy h3 { color: #fff; }
.sec-navy .sec-eyebrow { color: var(--blue-300); border-color: rgba(255,255,255,.25); }
.sec-navy .sec-sub { color: rgba(255,255,255,.68); }
.relative { position: relative; }

/* ---------- 分区分割器（斜切） ---------- */
.sec-divider { height: 0; line-height: 0; overflow: hidden; }
.sec-divider svg { display: block; width: 100%; height: 56px; }
.sec-divider.flip svg { transform: scaleY(-1); }

/* ---------- 顶部信息条 ---------- */
.nav-topbar {
  background: var(--navy-900);
  color: rgba(255,255,255,.72);
  font-size: 13px;
  line-height: 1;
}
.nav-topbar .container {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 38px;
}
.t-info { display: flex; gap: 26px; align-items: center; }
.t-info span { display: inline-flex; align-items: center; gap: 7px; }
.t-info svg { width: 14px; height: 14px; color: var(--blue-300); }
.t-links { display: flex; gap: 4px; }
.t-links a { color: rgba(255,255,255,.72); padding: 0 10px; border-left: 1px solid rgba(255,255,255,.14); }
.t-links a:hover { color: #fff; }

/* ---------- 导航栏（重设：紧凑、nowrap、下拉双列） ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  transition: background .35s ease, box-shadow .35s ease;
  background: rgba(255,255,255,.98);
  box-shadow: 0 1px 0 rgba(20,33,60,.06);
}
body.has-topbar .navbar { top: 38px; }
/* 滚动变色后：topbar 已滚走，让 navbar 贴住 viewport 顶部，避免上方 38px 空隙 */
body.has-topbar .navbar.scrolled { top: 0; }
.navbar.transparent {
  background: transparent;
  box-shadow: none;
}
.navbar.transparent .menu > ul > li > a { color: #fff; }
.navbar.transparent .nav-cta .nav-tel { color: #fff; }
.navbar.scrolled { background: rgba(255,255,255,.98); box-shadow: 0 6px 24px rgba(20,33,60,.08); }
.navbar.scrolled .menu > ul > li > a { color: var(--gray-700); }
.navbar.scrolled .nav-cta .nav-tel { color: var(--navy-700); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 18px; }
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { display: block; }
.menu { flex: 1 1 auto; display: flex; justify-content: center; min-width: 0; }
.menu > ul { display: flex; align-items: center; gap: 2px; flex-wrap: nowrap; }
.menu > ul > li { position: relative; white-space: nowrap; }
.menu > ul > li > a {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 10px 11px;
  font-size: 15px; font-weight: 500; line-height: 1.4;
  color: var(--gray-700);
  white-space: nowrap;   /* 防止文字折行 */
  transition: color .25s ease;
}
.menu > ul > li > a:hover,
.menu > ul > li.active > a { color: var(--blue-500); }
.caret {
  width: 6px; height: 6px; margin-top: -3px;
  border-right: 1.4px solid currentColor; border-bottom: 1.4px solid currentColor;
  transform: rotate(45deg); transition: transform .25s ease;
  display: inline-block; flex-shrink: 0;
}
.menu > ul > li:hover .caret { transform: rotate(225deg); margin-top: 2px; }
/* 下拉：双列栅格，更紧凑适配多子项 */
.dropdown {
  position: absolute; top: calc(100% + 14px); left: 50%;
  min-width: 380px; padding: 12px;
  background: #fff; border-radius: 14px;
  box-shadow: var(--shadow-3);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 6px;
  opacity: 0; visibility: hidden; transform: translate(-50%, 10px);
  transition: all .28s ease;
}
.menu > ul > li:hover .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown a {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 11px; border-radius: 8px;
  font-size: 13.5px; color: var(--gray-600);
  white-space: nowrap;  /* 防止下拉项文字折行 */
}
.dropdown a svg { width: 16px; height: 16px; color: var(--blue-400); flex-shrink: 0; }
.dropdown a span { font-size: 12px; color: var(--gray-400); margin-left: auto; }
.dropdown a:hover { background: var(--gray-100); color: var(--navy-700); }
.nav-cta { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-tel {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 15px; font-weight: 700; color: var(--navy-700); white-space: nowrap;
}
.nav-tel svg { width: 16px; height: 16px; color: var(--blue-500); }
/* 汉堡 */
.nav-toggle {
  display: none; width: 42px; height: 42px;
  background: transparent; border: 0; padding: 0;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--navy-700); border-radius: 2px; transition: all .3s ease; }
.navbar.transparent .nav-toggle span { background: #fff; }
.navbar.scrolled .nav-toggle span { background: var(--navy-700); }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 移动抽屉 ---------- */
.drawer-mask {
  position: fixed; inset: 0; z-index: 300; background: rgba(14,24,48,.5);
  opacity: 0; visibility: hidden; transition: all .3s ease;
}
.mobile-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 310;
  width: 300px; max-width: 86vw; background: #fff;
  transform: translateX(102%); transition: transform .35s ease;
  display: flex; flex-direction: column; overflow-y: auto;
}
body.nav-open .drawer-mask { opacity: 1; visibility: visible; }
body.nav-open .mobile-drawer { transform: translateX(0); }
.m-search { display: flex; padding: 16px; border-bottom: 1px solid var(--gray-200); gap: 8px; }
.m-search input {
  flex: 1; border: 1px solid var(--gray-300); border-radius: 8px;
  padding: 9px 12px; font-size: 14px; outline: none;
}
.m-search button { border: 0; background: var(--navy-700); color: #fff; border-radius: 8px; width: 40px; }
.m-nav { padding: 10px 16px 20px; }
.m-nav > li { border-bottom: 1px solid var(--gray-100); }
.m-nav > li > a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 2px; font-size: 15px; font-weight: 600; color: var(--ink);
}
.plus { position: relative; width: 10px; height: 10px; }
.plus::before, .plus::after {
  content: ""; position: absolute; background: var(--gray-500);
}
.plus::before { left: 0; top: 4.5px; width: 10px; height: 1.6px; }
.plus::after { left: 4.5px; top: 0; width: 1.6px; height: 10px; }
.m-sub { display: none; padding: 2px 0 12px 14px; }
.m-sub a { display: block; padding: 8px 2px; font-size: 14px; color: var(--gray-600); }
.m-nav > li.open .plus::after { display: none; }
.m-cta { margin: 4px 16px 24px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 10px;
  font-size: 15px; font-weight: 600; line-height: 1.4;
  border: 1.5px solid transparent; cursor: pointer;
  transition: all .28s ease; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--grad-blue); color: #fff; box-shadow: 0 8px 20px rgba(58,93,176,.28); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(58,93,176,.36); color: #fff; }
.btn-outline { background: transparent; color: var(--navy-700); border-color: var(--navy-500); }
.btn-outline:hover { background: var(--navy-700); color: #fff; }
.btn-light { background: #fff; color: var(--navy-700); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); color: var(--navy-700); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: #fff; color: var(--navy-700); }
.btn-navy { background: var(--navy-700); color: #fff; }
.btn-navy:hover { background: var(--navy-800); color: #fff; transform: translateY(-2px); }
.btn-soft { background: var(--gray-200); color: var(--navy-700); }
.btn-soft:hover { background: var(--gray-300); color: var(--navy-800); }
.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 8px; }
.btn-lg { padding: 15px 34px; font-size: 16px; border-radius: 12px; }
.btn-block { display: flex; width: 100%; }
.btn .arr { transition: transform .25s ease; }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- 区块标题（多形态，避免同质化） ---------- */
.sec-head { margin-bottom: 52px; }
.sec-head.center { text-align: center; }
.sec-head.light .sec-title { color: #fff; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: .22em;
  color: var(--blue-500); text-transform: uppercase; margin-bottom: 14px;
}
.sec-eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--blue-400); }
.sec-head.center .sec-eyebrow::after { content: ""; width: 26px; height: 2px; background: var(--blue-400); }
.sec-title { font-size: 34px; font-weight: 800; letter-spacing: .005em; }
.sec-title em {
  font-style: normal; color: var(--blue-500);
  background: linear-gradient(transparent 62%, rgba(111,143,217,.28) 62%);
}
.sec-sub { margin-top: 14px; max-width: 640px; color: var(--gray-500); }
.sec-head.center .sec-sub { margin-left: auto; margin-right: auto; }
.sec-head .sh-foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 8px; }
.sec-head.center .sh-foot { justify-content: center; }
/* 变体2：左侧竖线 */
.sec-head.rail { padding-left: 22px; border-left: 4px solid var(--blue-500); }
.sec-head.rail .sec-eyebrow { margin-bottom: 8px; }
/* 变体3：编号式 */
.sec-head.num .sh-num {
  font-size: 13px; font-weight: 800; letter-spacing: .3em; color: var(--blue-300);
  display: block; margin-bottom: 10px;
}
/* 变体4：顶部短斜线 */
.sec-head.slant-line .sec-eyebrow { position: relative; }
.sec-head.slant-line .sec-eyebrow::before {
  content: ""; width: 30px; height: 3px; background: var(--grad-blue);
  transform: skewX(-30deg);
}
/* 变体5：dark 背景 */
.sec-head.dark .sec-title { color: #fff; }
.sec-head.dark .sec-sub { color: rgba(255,255,255,.66); }
.sec-head.dark .sec-eyebrow { color: var(--blue-300); }

.arrow-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--blue-500);
}
.arrow-link svg { width: 15px; height: 15px; transition: transform .25s ease; }
.arrow-link:hover svg { transform: translateX(4px); }

/* ---------- 栅格 ---------- */
.grid { display: grid; gap: 28px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.gap-lg { gap: 36px; }
.grid.gap-sm { gap: 20px; }
.grid.vertical { align-items: center; }
.grid.aside { grid-template-columns: 380px 1fr; align-items: start; }

/* ---------- 特性卡片（多形态） ---------- */
/* 形态A：白底描边 + 顶部渐变线 */
.feat-card {
  position: relative; background: #fff; border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 34px 28px 30px;
  transition: all .32s ease;
}
.feat-card::before {
  content: ""; position: absolute; top: 0; left: 24px; right: 24px; height: 3px;
  background: var(--grad-blue); border-radius: 0 0 4px 4px;
  transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.feat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); border-color: transparent; }
.feat-card:hover::before { transform: scaleX(1); }
.fc-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--grad-soft); color: var(--navy-700);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.fc-icon svg { width: 26px; height: 26px; }
.feat-card h3 { font-size: 18px; margin-bottom: 10px; }
.feat-card p { font-size: 14.5px; color: var(--gray-500); margin: 0; }

/* 形态B：深藏青渐变卡 */
.feat-card.solid { background: var(--grad-navy); border: 0; color: rgba(255,255,255,.75); }
.feat-card.solid::before { background: linear-gradient(90deg, var(--blue-300), #fff); }
.feat-card.solid h3 { color: #fff; }
.feat-card.solid p { color: rgba(255,255,255,.66); }
.feat-card.solid .fc-icon { background: rgba(255,255,255,.12); color: #fff; }
.feat-card.solid:hover { box-shadow: var(--shadow-3); }

/* 形态C：幽灵编号卡 */
.feat-card.ghost { overflow: hidden; }
.feat-card.ghost .ghost-num {
  position: absolute; right: 14px; top: -8px;
  font-size: 74px; font-weight: 800; line-height: 1;
  color: var(--gray-100); z-index: 0; transition: color .3s ease;
}
.feat-card.ghost:hover .ghost-num { color: rgba(58,93,176,.14); }
.feat-card.ghost > * { position: relative; z-index: 1; }
.feat-card.ghost .fc-icon { background: transparent; border: 1.6px dashed var(--gray-300); }

/* 形态D：斜切角卡 */
.feat-card.slant { border-radius: 6px; border: 0; box-shadow: var(--shadow-1); }
.feat-card.slant .fc-icon { background: var(--grad-blue); color: #fff; border-radius: 10px; transform: skewX(-6deg); }
.feat-card.slant .fc-icon svg { transform: skewX(6deg); }
.feat-card.slant h3 { position: relative; padding-left: 14px; }
.feat-card.slant h3::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; background: var(--grad-blue); transform: skewX(-14deg); }

/* 形态E：深底斜切 */
.feat-card.dark-slant {
  background: var(--grad-navy); color: rgba(255,255,255,.72);
  border-radius: 4px; border: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.feat-card.dark-slant h3 { color: #fff; }
.feat-card.dark-slant p { color: rgba(255,255,255,.6); }
.feat-card.dark-slant .fc-icon { background: rgba(255,255,255,.12); color: #fff; border-radius: 50%; }
.feat-card.dark-slant:hover { transform: translateY(-6px); box-shadow: var(--shadow-3); }

/* ---------- 图文并排 ---------- */
.img-block { position: relative; }
.img-block img { border-radius: var(--radius-lg); box-shadow: var(--shadow-2); width: 100%; object-fit: cover; }
.img-block .ib-badge {
  position: absolute; right: -18px; bottom: -20px;
  background: var(--grad-blue); color: #fff;
  border-radius: 14px; padding: 18px 22px;
  box-shadow: var(--shadow-2); text-align: center;
}
.ib-badge b { display: block; font-size: 30px; line-height: 1.1; color: #fff; }
.ib-badge span { font-size: 12px; letter-spacing: .14em; color: rgba(255,255,255,.8); }
.img-block .ib-frame {
  position: absolute; inset: -14px auto auto -14px; width: 62%; height: 62%;
  border: 2px solid var(--blue-300); border-radius: var(--radius-lg);
  z-index: -1;
}
.img-block .ib-dots {
  position: absolute; left: -26px; bottom: -26px; width: 120px; height: 120px; z-index: -1;
  background-image: radial-gradient(var(--gray-300) 2px, transparent 2px);
  background-size: 16px 16px;
}
.feature-list { display: grid; gap: 16px; }
.feature-list li {
  display: flex; gap: 14px; align-items: flex-start;
  background: #fff; border: 1px solid var(--gray-200); border-radius: 12px;
  padding: 16px 18px; transition: all .3s ease;
}
.feature-list li:hover { box-shadow: var(--shadow-1); border-color: var(--blue-300); transform: translateX(4px); }
.feature-list .fl-ic {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  background: var(--grad-soft); color: var(--navy-700);
  display: flex; align-items: center; justify-content: center;
}
.feature-list .fl-ic svg { width: 19px; height: 19px; }
.feature-list b { display: block; font-size: 15px; margin-bottom: 2px; }
.feature-list p { font-size: 13.5px; color: var(--gray-500); margin: 0; }

/* ---------- 数据统计 ---------- */
.stats-band {
  background: var(--grad-navy); border-radius: var(--radius-lg);
  padding: 52px 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  position: relative; overflow: hidden;
}
.stats-band::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px;
  border: 30px solid rgba(255,255,255,.05); border-radius: 50%;
}
.stat-box { text-align: center; position: relative; z-index: 1; }
.stat-box b { display: block; font-size: 40px; font-weight: 800; color: #fff; line-height: 1.15; }
.stat-box b i { font-style: normal; font-size: 22px; color: var(--blue-300); margin-left: 2px; }
.stat-box span { display: block; margin-top: 6px; font-size: 13.5px; color: rgba(255,255,255,.62); letter-spacing: .06em; }
.stats-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stats-strip .stat-box {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 26px 14px; box-shadow: var(--shadow-1);
}
.stats-strip .stat-box b { color: var(--navy-700); }
.stats-strip .stat-box span { color: var(--gray-500); }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; }
.step-item { position: relative; text-align: center; padding: 0 6px; }
.step-item::after {
  content: ""; position: absolute; top: 30px; left: calc(50% + 46px); right: calc(-50% + 46px);
  height: 2px; background: repeating-linear-gradient(90deg, var(--gray-300) 0 8px, transparent 8px 14px);
}
.step-item:last-child::after { display: none; }
.step-num {
  width: 60px; height: 60px; margin: 0 auto 16px;
  background: #fff; border: 2px solid var(--blue-400); color: var(--blue-500);
  border-radius: 16px; transform: rotate(45deg);
  display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 1; box-shadow: var(--shadow-1);
}
.step-num b { font-size: 20px; font-weight: 800; transform: rotate(-45deg); color: var(--navy-700); }
.step-item h4 { font-size: 16px; margin-bottom: 6px; }
.step-item p { font-size: 13px; color: var(--gray-500); margin: 0; }
/* 竖排步骤 */
.steps-vert { display: grid; gap: 18px; }
.steps-vert .step-item { display: flex; gap: 18px; text-align: left; align-items: flex-start; padding: 0; }
.steps-vert .step-item::after { display: none; }
.steps-vert .step-num { width: 44px; height: 44px; margin: 0; flex-shrink: 0; border-radius: 12px; }
.steps-vert .step-num b { font-size: 16px; }
.steps-vert h4 { margin-bottom: 4px; }
.steps-vert p { font-size: 13.5px; }
/* 斜线步骤 */
.steps.slant .step-num { background: var(--grad-blue); border: 0; transform: rotate(0) skewX(-8deg); border-radius: 8px; }
.steps.slant .step-num b { color: #fff; transform: none; }

/* ---------- 案例卡片 ---------- */
.case-card {
  position: relative; background: #fff; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-1); transition: all .32s ease;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.case-card .cc-img { overflow: hidden; aspect-ratio: 4 / 3; }
.case-card .cc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .cc-img img { transform: scale(1.06); }
.case-card .cc-body { padding: 22px 22px 24px; }
.case-card .cc-cat {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .1em;
  color: var(--blue-500); background: rgba(58,93,176,.09); border-radius: 20px; padding: 3px 12px; margin-bottom: 10px;
}
.case-card h3 { font-size: 17px; margin-bottom: 6px; }
.case-card p { font-size: 13.5px; color: var(--gray-500); margin: 0 0 12px; }
.case-card .cc-meta { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--gray-400); }
/* 覆盖式案例卡 */
.case-card.overlay .cc-img { aspect-ratio: 4 / 5; }
.case-card.overlay .cc-body {
  position: absolute; inset: auto 0 0 0; padding: 60px 22px 20px;
  background: linear-gradient(transparent, rgba(14,24,48,.88));
  color: #fff;
}
.case-card.overlay .cc-cat { background: rgba(255,255,255,.16); color: #fff; }
.case-card.overlay h3 { color: #fff; }
.case-card.overlay p { color: rgba(255,255,255,.72); }
/* 横向案例卡 */
.case-card.horiz { display: grid; grid-template-columns: 220px 1fr; align-items: stretch; }
.case-card.horiz .cc-img { aspect-ratio: auto; height: 100%; }
.case-card.horiz .cc-body { display: flex; flex-direction: column; justify-content: center; }

/* ---------- 新闻卡片 ---------- */
.news-card {
  display: block; background: #fff; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-1); transition: all .32s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.news-card .nc-img { aspect-ratio: 16 / 9; overflow: hidden; position: relative; }
.news-card .nc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .nc-img img { transform: scale(1.06); }
.nc-cat {
  position: absolute; left: 14px; top: 14px;
  background: rgba(20,33,60,.82); color: #fff;
  font-size: 12px; letter-spacing: .08em; padding: 4px 12px; border-radius: 20px;
  backdrop-filter: blur(4px);
}
.news-card .nc-body { padding: 20px 22px 22px; }
.news-card h3 { font-size: 16.5px; line-height: 1.5; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: 13.5px; color: var(--gray-500); margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nc-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; color: var(--gray-400); }
.nc-meta svg { width: 13px; height: 13px; margin-right: 4px; }
.nc-date { display: inline-flex; align-items: center; }
/* 列表式新闻 */
.news-list .nl-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 4px; border-bottom: 1px solid var(--gray-200); transition: all .3s ease;
}
.news-list .nl-item:last-child { border-bottom: 0; }
.news-list .nl-item:hover { padding-left: 14px; }
.news-list .nl-date { font-size: 12.5px; color: var(--gray-400); white-space: nowrap; }
.news-list .nl-item h4 { font-size: 15.5px; margin: 0; flex: 1; }
.news-list .nl-item h4 a { color: var(--ink); }
.news-list .nl-item h4 a:hover { color: var(--blue-500); }
.news-list .nl-tag { font-size: 12px; color: var(--blue-500); background: rgba(58,93,176,.08); border-radius: 16px; padding: 3px 12px; white-space: nowrap; }

/* ---------- 团队卡片 ---------- */
.team-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-1); transition: all .32s ease; text-align: center;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.team-card .tc-photo { aspect-ratio: 4 / 5; overflow: hidden; }
.team-card .tc-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.team-card:hover .tc-photo img { transform: scale(1.05); }
.team-card .tc-info { padding: 18px 14px 20px; }
.team-card h3 { font-size: 17px; margin-bottom: 2px; }
.team-card span { font-size: 13px; color: var(--blue-500); }
.team-card p { font-size: 13px; color: var(--gray-500); margin: 10px 0 0; }

/* ---------- 价格卡片 ---------- */
.price-card {
  position: relative; background: #fff; border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 36px 30px; transition: all .32s ease;
}
.price-card:hover { box-shadow: var(--shadow-2); transform: translateY(-4px); }
.price-card.hot { border: 0; background: var(--grad-navy); color: rgba(255,255,255,.75); }
.price-card.hot h3 { color: #fff; }
.price-card.hot .pc-price { color: #fff; }
.price-card.hot .pc-price i { color: var(--blue-300); }
.price-card .pc-flag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--grad-blue); color: #fff; font-size: 12.5px;
  padding: 5px 18px; border-radius: 20px; white-space: nowrap; letter-spacing: .06em;
}
.price-card h3 { font-size: 18px; }
.price-card .pc-price { font-size: 42px; font-weight: 800; color: var(--navy-700); margin: 8px 0 2px; }
.price-card .pc-price i { font-style: normal; font-size: 15px; font-weight: 600; color: var(--gray-500); margin-right: 2px; }
.price-card .pc-desc { font-size: 13.5px; color: var(--gray-500); margin-bottom: 18px; }
.price-card ul { display: grid; gap: 10px; margin-bottom: 24px; }
.price-card ul li { display: flex; gap: 9px; font-size: 14px; color: var(--gray-600); align-items: flex-start; }
.price-card ul li svg { width: 15px; height: 15px; color: var(--blue-400); flex-shrink: 0; margin-top: 3px; }
.price-card.hot ul li { color: rgba(255,255,255,.72); }
.price-card.hot ul li svg { color: var(--blue-300); }

/* ---------- 内联 CTA ---------- */
.inline-cta {
  background: var(--grad-blue); border-radius: var(--radius-lg);
  padding: 46px 50px; display: flex; align-items: center; justify-content: space-between;
  gap: 30px; position: relative; overflow: hidden; box-shadow: var(--shadow-2);
}
.inline-cta::after {
  content: ""; position: absolute; right: -70px; top: -70px; width: 240px; height: 240px;
  border: 32px solid rgba(255,255,255,.08); border-radius: 50%;
}
.inline-cta h3 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.inline-cta p { color: rgba(255,255,255,.78); margin: 0; font-size: 14.5px; }
.inline-cta .ica { display: flex; gap: 14px; position: relative; z-index: 1; flex-shrink: 0; }
/* CTA 变体2：浅灰底 */
.inline-cta.soft { background: var(--gray-100); border: 1px solid var(--gray-200); box-shadow: none; }
.inline-cta.soft h3 { color: var(--ink); }
.inline-cta.soft p { color: var(--gray-500); }
.inline-cta.soft::after { border-color: rgba(58,93,176,.07); }
/* CTA 变体3：深藏青 + 斜切 */
.inline-cta.slant-cut { background: var(--grad-navy); border-radius: 8px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%); }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy-900); color: rgba(255,255,255,.6); padding: 72px 0 0; }
.f-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 48px; }
.f-brand img { margin-bottom: 18px; }
.f-brand p { font-size: 13.5px; line-height: 1.9; color: rgba(255,255,255,.55); margin: 0; }
.f-col h5 {
  color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}
.f-col h5::before { content: ""; width: 16px; height: 2px; background: var(--blue-400); }
.f-links { display: grid; gap: 10px; }
.f-links a { font-size: 13.5px; color: rgba(255,255,255,.58); transition: all .25s ease; display: inline-flex; align-items: center; gap: 6px; }
.f-links a::before { content: ""; width: 5px; height: 5px; background: var(--blue-400); transform: rotate(45deg); transition: transform .25s ease; }
.f-links a:hover { color: #fff; transform: translateX(3px); }
.f-links a:hover::before { transform: rotate(225deg); }
.f-contact { display: grid; gap: 16px; }
.f-contact li { display: flex; gap: 12px; align-items: flex-start; font-size: 13.5px; line-height: 1.6; }
.f-contact svg { width: 17px; height: 17px; color: var(--blue-400); flex-shrink: 0; margin-top: 3px; }
.f-contact b { display: block; color: rgba(255,255,255,.85); font-weight: 600; font-size: 13.5px; }
.f-bottom {
  border-top: 1px solid rgba(255,255,255,.09);
  padding: 22px 0; display: flex; flex-wrap: wrap; gap: 10px 26px;
  align-items: center; justify-content: space-between;
  font-size: 13px; color: rgba(255,255,255,.42);
}
.beian a { color: rgba(255,255,255,.5); }
.beian a:hover { color: #fff; }

/* ---------- 悬浮工具 ---------- */
.float-bar { position: fixed; right: 18px; bottom: 96px; z-index: 150; display: grid; gap: 10px; }
.float-bar a {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--grad-blue); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-2); position: relative; transition: all .3s ease;
}
.float-bar a:hover { transform: translateY(-3px); }
.float-bar a span {
  position: absolute; right: 54px; top: 50%; transform: translateY(-50%);
  background: var(--navy-700); color: #fff; font-size: 13px;
  padding: 5px 12px; border-radius: 6px; white-space: nowrap;
  opacity: 0; visibility: hidden; transition: all .25s ease;
}
.float-bar a:hover span { opacity: 1; visibility: visible; right: 58px; }
.float-bar svg { width: 20px; height: 20px; }
.to-top {
  position: fixed; right: 18px; bottom: 28px; z-index: 150;
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--navy-700); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-2); opacity: 0; visibility: hidden;
  transition: all .3s ease;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--blue-500); color: #fff; transform: translateY(-3px); }
.to-top svg { width: 19px; height: 19px; }

/* ---------- 标签/角标 ---------- */
.tag { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--blue-500); background: rgba(58,93,176,.08); border-radius: 20px; padding: 4px 13px; }
.tag.solid { background: var(--grad-blue); color: #fff; }
.badge-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--blue-400); }

/* ---------- 引语/客户评价 ---------- */
.quote-card {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 30px 28px; position: relative; transition: all .3s ease;
}
.quote-card:hover { box-shadow: var(--shadow-2); transform: translateY(-4px); }
.quote-card::before {
  content: "\201C"; position: absolute; top: 6px; right: 22px;
  font-size: 72px; line-height: 1; color: var(--gray-100); font-weight: 800;
}
.quote-card p { font-size: 14.5px; color: var(--gray-600); margin-bottom: 18px; position: relative; }
.quote-card .qc-foot { display: flex; align-items: center; gap: 12px; }
.quote-card .qc-av { width: 42px; height: 42px; border-radius: 50%; background: var(--grad-soft); color: var(--navy-700); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; }
.quote-card b { display: block; font-size: 14.5px; }
.quote-card span { font-size: 12.5px; color: var(--gray-400); }
.stars { color: #e8a33d; letter-spacing: 2px; font-size: 13px; }

/* ---------- 合作伙伴 ---------- */
.partner-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.partner-item {
  background: #fff; border: 1px solid var(--gray-200); border-radius: 10px;
  height: 74px; display: flex; align-items: center; justify-content: center;
  font-size: 14.5px; font-weight: 700; letter-spacing: .06em; color: var(--gray-400);
  transition: all .3s ease; filter: grayscale(1);
}
.partner-item:hover { color: var(--navy-700); border-color: var(--blue-300); filter: none; transform: translateY(-3px); box-shadow: var(--shadow-1); }

/* ---------- 表格 ---------- */
.tbl { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-1); }
.tbl th { background: var(--navy-700); color: #fff; font-size: 14px; font-weight: 600; padding: 15px 18px; text-align: left; }
.tbl td { padding: 14px 18px; font-size: 14px; color: var(--gray-600); border-bottom: 1px solid var(--gray-100); }
.tbl tr:nth-child(even) td { background: var(--gray-50); }
.tbl td:first-child { font-weight: 600; color: var(--ink); }
.tbl .ok { color: var(--blue-500); font-weight: 700; }
.tbl .no { color: var(--gray-400); }

/* ---------- 徽章条 ---------- */
.badge-strip { display: flex; flex-wrap: wrap; gap: 12px; }
.badge-strip .bs-item {
  display: inline-flex; align-items: center; gap: 9px;
  background: #fff; border: 1px solid var(--gray-200); border-radius: 30px;
  padding: 9px 20px; font-size: 13.5px; color: var(--gray-600); transition: all .3s ease;
}
.badge-strip .bs-item svg { width: 15px; height: 15px; color: var(--blue-500); }
.badge-strip .bs-item:hover { border-color: var(--blue-300); box-shadow: var(--shadow-1); color: var(--navy-700); }

/* ---------- 滚动渐入动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.left { transform: translateX(-32px); }
.reveal.right { transform: translateX(32px); }
.reveal.zoom { transform: scale(.92); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .f-top { grid-template-columns: 1.4fr 1fr 1fr; }
}
/* 中等屏（笔记本常见 1280~1366 等）：让导航更紧凑 */
@media (max-width: 1280px) {
  .menu > ul > li > a { padding: 9px 9px; font-size: 14px; }
  .menu > ul { gap: 0; }
  .navbar .container { gap: 14px; }
  .nav-cta { gap: 10px; }
  .nav-tel { font-size: 14px; }
  .nav-tel svg { width: 14px; height: 14px; }
  .dropdown { min-width: 360px; padding: 10px; gap: 4px; }
  .dropdown a { padding: 8px 10px; font-size: 13px; }
  .dropdown a svg { width: 15px; height: 15px; }
}
/* 较窄屏（≤1080）：直接转入移动抽屉 */
@media (max-width: 1080px) {
  .nav-cta .nav-tel { display: none; }
  .menu { display: none; }
  .nav-toggle { display: flex; }
  .navbar .container { height: 64px; }
  body.has-topbar .navbar { top: 0; }
  body.has-topbar .navbar.scrolled { top: 0; }
  .nav-topbar { display: none; }
}
@media (max-width: 992px) {
  .sec { padding: 72px 0; }
  .sec-title { font-size: 28px; }
  .nav-cta .nav-tel { display: none; }
  .menu { display: none; }
  .nav-toggle { display: flex; }
  .navbar .container { height: 64px; }
  body.has-topbar .navbar { top: 0; }
  body.has-topbar .navbar.scrolled { top: 0; }
  .nav-topbar { display: none; }
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.aside { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .steps .step-item:nth-child(2)::after { display: none; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .f-top { grid-template-columns: 1fr 1fr; gap: 34px; }
  .partner-row { grid-template-columns: repeat(3, 1fr); }
  .inline-cta { flex-direction: column; text-align: center; padding: 38px 28px; }
  .case-card.horiz { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .sec { padding: 56px 0; }
  .sec-title { font-size: 24px; }
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: 1fr 1fr; padding: 40px 22px; }
  .stat-box b { font-size: 30px; }
  .f-top { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
  .img-block .ib-badge { right: 10px; bottom: -16px; padding: 14px 16px; }
  .ib-badge b { font-size: 24px; }
  .inline-cta .ica { flex-direction: column; width: 100%; }
  .inline-cta .ica .btn { width: 100%; }
  .price-card { padding: 30px 22px; }
  .float-bar a span { display: none; }
}