/* ============================================================
   北京尧图网络科技 · 全站设计系统
   主题：墨蓝 × 琉璃青 × 鎏金  —— 数字化官网精工定制
   ============================================================ */

:root {
  --ink-950: #071019;
  --ink-900: #0C1A30;
  --ink-850: #0E1E38;
  --ink-800: #122340;
  --ink-700: #1A2F55;
  --ink-600: #23406F;
  --blue: #2D6CDF;
  --blue-deep: #1F55B8;
  --cyan: #22C3CF;
  --gold: #E3B45A;
  --gold-deep: #C9933A;
  --bg: #F5F8FC;
  --bg-soft: #EDF2F9;
  --card: #FFFFFF;
  --text: #14223A;
  --text-2: #3C4C66;
  --muted: #67788F;
  --line: #E2E9F3;
  --line-dark: #223557;
  --grad-main: linear-gradient(135deg, #2D6CDF 0%, #22C3CF 100%);
  --grad-dark: linear-gradient(135deg, #0C1A30 0%, #142B4E 100%);
  --grad-gold: linear-gradient(135deg, #E3B45A 0%, #F4D28A 100%);
  --shadow-sm: 0 2px 10px rgba(12, 26, 48, 0.06);
  --shadow-md: 0 10px 30px rgba(12, 26, 48, 0.10);
  --shadow-lg: 0 24px 60px rgba(12, 26, 48, 0.16);
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --tr: all .32s cubic-bezier(.4,0,.2,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px; line-height: 1.8; color: var(--text);
  background: var(--bg); overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--tr); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
::selection { background: rgba(45,108,223,.18); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-xl { max-width: 1380px; margin: 0 auto; padding: 0 24px; }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; position: relative; }
.section.tint { background: var(--bg-soft); }
.section.dark { background: var(--grad-dark); color: #DCE6F5; }
.section.no-pad-top { padding-top: 0; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 60px; }
.section-head.left { text-align: left; margin-left: 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--grad-main); border-radius: 2px; }
.eyebrow.gold { color: var(--gold); }
.section-head h2 { font-size: 40px; font-weight: 800; line-height: 1.25; letter-spacing: .01em; }
.section-head .sub { margin-top: 18px; color: var(--muted); font-size: 16.5px; }
.section.dark .section-head h2 { color: #fff; }
.section.dark .section-head .sub { color: #9FB2CC; }

/* 章节序号（装饰） */
.section-idx {
  position: absolute; top: 40px; right: 40px;
  font-size: 120px; font-weight: 800; line-height: 1; letter-spacing: -.04em;
  color: rgba(45,108,223,.06); pointer-events: none; user-select: none;
}
.section.dark .section-idx { color: rgba(255,255,255,.05); }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 26px; }
.grid-2 { display: grid; gap: 30px; grid-template-columns: repeat(2, 1fr); }
.grid-3 { display: grid; gap: 28px; grid-template-columns: repeat(3, 1fr); }
.grid-4 { display: grid; gap: 24px; grid-template-columns: repeat(4, 1fr); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 30px; font-size: 15px; font-weight: 700; border-radius: var(--radius-pill);
  transition: var(--tr); white-space: nowrap; line-height: 1.4;
}
.btn-primary { background: var(--grad-main); color: #fff; box-shadow: 0 8px 22px rgba(45,108,223,.32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(45,108,223,.42); color: #fff; }
.btn-ghost { border: 1.6px solid var(--blue); color: var(--blue); background: transparent; }
.btn-ghost:hover { background: var(--blue); color: #fff; transform: translateY(-2px); }
.btn-gold { background: var(--grad-gold); color: #5B3A08; box-shadow: 0 8px 22px rgba(227,180,90,.34); }
.btn-gold:hover { transform: translateY(-2px); color: #5B3A08; box-shadow: 0 14px 30px rgba(227,180,90,.46); }
.btn-light { background: #fff; color: var(--ink-800); }
.btn-light:hover { transform: translateY(-2px); color: var(--blue); }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 标签 / 徽标 ---------- */
.tag {
  display: inline-flex; align-items: center; padding: 4px 13px; border-radius: var(--radius-pill);
  font-size: 12.5px; font-weight: 600; letter-spacing: .04em; background: rgba(45,108,223,.1); color: var(--blue);
}
.tag.gold { background: rgba(227,180,90,.16); color: var(--gold-deep); }
.tag.cyan { background: rgba(34,195,207,.14); color: #1395A0; }
.badge-num {
  font-family: "DIN Alternate", "Arial Narrow", sans-serif; font-weight: 800; font-size: 13px; letter-spacing: .06em;
}

/* ---------- 顶部导航（大菜单） ---------- */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1200;
  background: rgba(255,255,255,.9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line); transition: var(--tr);
}
.header.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,.97); }
.header-inner { display: flex; align-items: center; gap: 26px; height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { width: 44px; height: 44px; object-fit: contain; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name strong { font-size: 19px; font-weight: 800; color: var(--ink-900); letter-spacing: .02em; }
.brand-name em { font-style: normal; font-size: 10px; letter-spacing: .32em; color: var(--muted); font-weight: 600; margin-top: 3px; }

.main-nav { flex: 1; }
.nav-list { display: flex; justify-content: flex-end; gap: 4px; }
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: flex; align-items: center; gap: 5px; padding: 10px 14px; font-size: 15px; font-weight: 600;
  color: var(--text-2); border-radius: 10px; position: relative;
}
.nav-list > li > a .arr { width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: var(--tr); }
.nav-list > li > a:hover, .nav-list > li > a.active { color: var(--blue); background: rgba(45,108,223,.08); }
.nav-list > li:hover > a .arr { transform: rotate(225deg) translateY(-1px); }

/* 下拉面板 */
.drop { position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 240px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 12px; opacity: 0; visibility: hidden; transition: var(--tr);
}
.drop::before { content: ""; position: absolute; top: -14px; left: 0; width: 100%; height: 14px; }
.nav-list > li:hover > .drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop a { display: flex; align-items: center; gap: 8px; padding: 9px 13px; border-radius: 9px; font-size: 14.5px; color: var(--text-2); }
.drop a::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); opacity: .0; transition: var(--tr); }
.drop a:hover { background: rgba(45,108,223,.07); color: var(--blue); padding-left: 17px; }
.drop a:hover::before { opacity: 1; }

/* 大菜单（mega） */
.mega { position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(8px);
  width: 860px; max-width: 92vw; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 26px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 30px;
  opacity: 0; visibility: hidden; transition: var(--tr); z-index: 1300;
}
.mega::before { content: ""; position: absolute; top: -14px; left: 0; width: 100%; height: 14px; }
.nav-list > li:hover > .mega { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega-col h5 { font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px 14px; font-weight: 700; }
.mega-col a { display: flex; align-items: center; gap: 9px; padding: 8px 14px; border-radius: 10px; font-size: 14.5px; color: var(--text-2); }
.mega-col a .dot { width: 6px; height: 6px; border-radius: 2px; background: var(--grad-main); flex-shrink: 0; }
.mega-col a:hover { background: rgba(45,108,223,.07); color: var(--blue); padding-left: 18px; }
.mega-cta { grid-column: 1 / -1; margin-top: 14px; padding: 16px 20px; background: linear-gradient(120deg, rgba(45,108,223,.08), rgba(34,195,207,.08)); border: 1px dashed rgba(45,108,223,.35); border-radius: 14px; display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.mega-cta .txt { font-size: 14px; color: var(--text-2); }
.mega-cta .txt b { color: var(--blue); }

.nav-cta { margin-left: 6px; }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { width: 24px; height: 2.5px; background: var(--ink-900); border-radius: 3px; transition: var(--tr); }

/* 抽屉遮罩 */
.drawer-overlay { position: fixed; inset: 0; background: rgba(8,17,32,.5); z-index: 1350; opacity: 0; visibility: hidden; transition: var(--tr); }
.drawer-overlay.show { opacity: 1; visibility: visible; }

/* 移动端抽屉 */
.mobile-drawer { position: fixed; top: 0; right: -100%; width: 86%; max-width: 400px; height: 100vh; background: #fff; z-index: 1400; box-shadow: -20px 0 60px rgba(12,26,48,.18); transition: var(--tr); overflow-y: auto; padding: 20px 22px 40px; }
.mobile-drawer.open { right: 0; }
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.drawer-close { font-size: 24px; color: var(--text-2); line-height: 1; }
.m-drawer-link > a { display: flex; justify-content: space-between; align-items: center; padding: 13px 4px; font-size: 16px; font-weight: 700; color: var(--text); border-bottom: 1px solid var(--line); }
.m-drawer-link > a .plus { font-size: 18px; color: var(--muted); transition: var(--tr); }
.m-drawer-sub { max-height: 0; overflow: hidden; transition: var(--tr); }
.m-drawer-sub a { display: block; padding: 9px 14px; font-size: 14.5px; color: var(--text-2); border-radius: 8px; }
.m-drawer-sub a:hover { background: rgba(45,108,223,.07); color: var(--blue); }
.m-drawer-link.open .plus { transform: rotate(45deg); }
.m-drawer-link.open .m-drawer-sub { max-height: 600px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 190px 0 110px; overflow: hidden; color: #fff; background: var(--grad-dark); }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(120,170,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.07) 1px, transparent 1px);
  background-size: 46px 46px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(900px 400px at 82% 12%, rgba(34,195,207,.18), transparent 60%),
              radial-gradient(700px 380px at 8% 88%, rgba(45,108,223,.22), transparent 60%);
}
.hero-inner { position: relative; z-index: 2; }
.hero-center { text-align: center; max-width: 860px; margin: 0 auto; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px; padding: 8px 18px; border-radius: var(--radius-pill);
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); font-size: 13.5px; font-weight: 600;
  letter-spacing: .1em; color: #DCE7FF; margin-bottom: 26px;
}
.hero-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 12px var(--gold); }
.hero h1 { font-size: 58px; font-weight: 800; line-height: 1.18; letter-spacing: .01em; margin-bottom: 24px; }
.hero h1 .grad { background: linear-gradient(120deg, #6FB0FF, #4AD5DF 55%, #F0C77A); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 18px; color: #AFC0DC; max-width: 640px; line-height: 1.9; }
.hero-center .hero-sub { margin: 0 auto; }
.hero-actions { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }
.hero-center .hero-actions { justify-content: center; }
.hero-meta { display: flex; gap: 34px; margin-top: 52px; flex-wrap: wrap; }
.hero-center .hero-meta { justify-content: center; }
.hero-meta .m b { display: block; font-size: 30px; font-weight: 800; color: #fff; line-height: 1.2; }
.hero-meta .m b em { font-style: normal; color: var(--gold); }
.hero-meta .m span { font-size: 13.5px; color: #8FA3C2; letter-spacing: .04em; }

/* Hero 分栏（左文右图） */
.hero-split { padding: 190px 0 110px; background: var(--grad-dark); position: relative; overflow: hidden; }
.hero-split::before { content:""; position:absolute; inset:0; pointer-events:none;
  background-image: linear-gradient(rgba(120,170,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(120,170,255,.07) 1px, transparent 1px); background-size: 46px 46px; }
.hero-split::after { content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(800px 400px at 90% 10%, rgba(34,195,207,.16), transparent 60%), radial-gradient(700px 400px at 4% 92%, rgba(45,108,223,.2), transparent 60%); }
.hero-split .hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.hero-split h1 { font-size: 50px; font-weight: 800; line-height: 1.18; color: #fff; margin-bottom: 22px; }
.hero-split h1 .grad { background: linear-gradient(120deg,#6FB0FF,#4AD5DF 55%,#F0C77A); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero-split .hero-sub { color: #AFC0DC; font-size: 17px; }
.hero-media { position: relative; }
.hero-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.hero-media .float-card {
  position: absolute; background: rgba(255,255,255,.96); border-radius: 14px; box-shadow: var(--shadow-lg);
  padding: 14px 18px; display: flex; align-items: center; gap: 12px; backdrop-filter: blur(8px);
}
.hero-media .float-card .ic { width: 42px; height: 42px; border-radius: 12px; background: var(--grad-main); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; }
.hero-media .float-card b { font-size: 15px; color: var(--text); display: block; line-height: 1.3; }
.hero-media .float-card span { font-size: 12.5px; color: var(--muted); }
.float-tl { top: 26px; left: -34px; }
.float-br { bottom: 30px; right: -26px; }

/* Hero-mini（内页顶部） */
.hero-mini { position: relative; padding: 148px 0 72px; overflow: hidden; color: #fff; background: var(--grad-dark); }
.hero-mini::before { content:""; position:absolute; inset:0; pointer-events:none;
  background-image: linear-gradient(rgba(120,170,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(120,170,255,.07) 1px, transparent 1px); background-size: 46px 46px; }
.hero-mini::after { content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(700px 320px at 86% 6%, rgba(34,195,207,.16), transparent 60%), radial-gradient(560px 300px at 4% 96%, rgba(45,108,223,.2), transparent 60%); }
.hero-mini .container { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap; }
.hero-mini .crumbs { font-size: 13.5px; color: #8FA3C2; margin-bottom: 14px; letter-spacing: .03em; }
.hero-mini .crumbs a:hover { color: #fff; }
.hero-mini h1 { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.2; }
.hero-mini .hero-sub { color: #AFC0DC; font-size: 16px; margin-top: 14px; max-width: 640px; }
.hero-mini .crumb-badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: var(--radius-pill); background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); font-size: 13px; color: #DCE7FF; }

/* ---------- 面包屑（次级） ---------- */
.crumbline { padding: 18px 0; border-bottom: 1px solid var(--line); background: #fff; }
.crumbline a, .crumbline span { font-size: 13.5px; color: var(--muted); }
.crumbline a:hover { color: var(--blue); }
.crumbline .sep { margin: 0 8px; color: #B9C6D8; }

/* ---------- 卡片 ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: var(--tr); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(45,108,223,.3); }

.icon-card { padding: 30px 26px; position: relative; overflow: hidden; }
.icon-card::after { content:""; position: absolute; right: -26px; top: -26px; width: 90px; height: 90px; border-radius: 50%; background: radial-gradient(circle, rgba(45,108,223,.09), transparent 70%); }
.icon-card .ic { width: 58px; height: 58px; border-radius: 16px; background: var(--grad-main); display: flex; align-items: center; justify-content: center; font-size: 26px; color: #fff; box-shadow: 0 8px 20px rgba(45,108,223,.28); margin-bottom: 20px; }
.icon-card.gold .ic { background: var(--grad-gold); box-shadow: 0 8px 20px rgba(227,180,90,.34); }
.icon-card.cyan .ic { background: linear-gradient(135deg,#22C3CF,#2D6CDF); }
.icon-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.icon-card p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

.feature-card { overflow: hidden; }
.feature-card .fc-img { height: 210px; overflow: hidden; position: relative; }
.feature-card .fc-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--tr); }
.feature-card:hover .fc-img img { transform: scale(1.06); }
.feature-card .fc-img .fc-tag { position: absolute; top: 14px; left: 14px; z-index: 2; }
.feature-card .fc-body { padding: 24px 24px 26px; }
.feature-card .fc-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card .fc-body p { font-size: 14px; color: var(--muted); line-height: 1.75; }
.feature-card .fc-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 700; color: var(--blue); }
.feature-card .fc-link .arr2 { width: 8px; height: 8px; border-right: 2px solid var(--blue); border-bottom: 2px solid var(--blue); transform: rotate(-45deg); transition: var(--tr); }
.feature-card .fc-link:hover .arr2 { transform: rotate(-45deg) translate(3px, 3px); }

.num-card { padding: 30px 26px; position: relative; }
.num-card .n { font-family: "DIN Alternate","Arial Narrow",sans-serif; font-size: 44px; font-weight: 800; line-height: 1; color: transparent; -webkit-text-stroke: 1.4px rgba(45,108,223,.45); margin-bottom: 18px; }
.num-card.gold .n { -webkit-text-stroke: 1.4px rgba(227,180,90,.6); }
.num-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.num-card p { font-size: 14px; color: var(--muted); line-height: 1.75; }

/* 案例卡 */
.case-card { overflow: hidden; }
.case-card .cc-img { height: 240px; overflow: hidden; position: relative; }
.case-card .cc-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--tr); }
.case-card:hover .cc-img img { transform: scale(1.06); }
.case-card .cc-img::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, transparent 45%, rgba(8,17,32,.55)); }
.case-card .cc-img .cc-meta { position: absolute; left: 18px; bottom: 14px; z-index: 2; display: flex; gap: 8px; }
.case-card .cc-body { padding: 22px 24px 26px; }
.case-card .cc-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.case-card .cc-body p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }
.case-card .cc-stat { display: flex; gap: 22px; margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); }
.case-card .cc-stat b { font-size: 17px; color: var(--blue); font-weight: 800; }
.case-card .cc-stat span { font-size: 12.5px; color: var(--muted); }

/* ---------- 数据 / 统计带 ---------- */
.stats-band { background: var(--grad-dark); position: relative; overflow: hidden; }
.stats-band::before { content:""; position:absolute; inset:0; pointer-events:none;
  background-image: linear-gradient(rgba(120,170,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(120,170,255,.06) 1px, transparent 1px); background-size: 46px 46px; }
.stats-band .container { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding: 60px 24px; }
.stat-box { text-align: center; position: relative; }
.stat-box::after { content:""; position:absolute; right:-15px; top:14%; height:72%; width:1px; background: rgba(255,255,255,.1); }
.stat-box:last-child::after { display: none; }
.stat-box .val { font-size: 52px; font-weight: 800; color: #fff; line-height: 1.1; font-family: "DIN Alternate","Arial Narrow",sans-serif; }
.stat-box .val em { font-style: normal; color: var(--gold); font-size: 30px; margin-left: 2px; }
.stat-box .lbl { margin-top: 10px; font-size: 14.5px; color: #9FB2CC; letter-spacing: .05em; }

/* ---------- 流程 / 时间线 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; }
.steps::before { content:""; position: absolute; top: 34px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg, var(--blue), var(--cyan)); opacity: .35; }
.step { text-align: center; position: relative; }
.step .s-ic { width: 68px; height: 68px; margin: 0 auto 18px; border-radius: 50%; background: #fff; border: 1.6px solid rgba(45,108,223,.3); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--blue); box-shadow: var(--shadow-sm); position: relative; z-index: 1; }
.step .s-no { position: absolute; top: -8px; right: calc(50% - 44px); width: 26px; height: 26px; border-radius: 50%; background: var(--grad-gold); color: #5B3A08; font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--muted); line-height: 1.7; max-width: 230px; margin: 0 auto; }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content:""; position: absolute; left: 10px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--blue), var(--cyan)); opacity: .35; }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item::before { content:""; position: absolute; left: -30px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--blue); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.tl-item p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split .split-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.split .split-media { position: relative; }
.split .split-media::after { content:""; position: absolute; inset: 0; transform: translate(16px,16px); border: 1.6px solid var(--cyan); border-radius: var(--radius-lg); z-index: -1; opacity: .5; }
.split h3 { font-size: 30px; font-weight: 800; line-height: 1.3; margin-bottom: 18px; }
.split p { color: var(--muted); line-height: 1.9; margin-bottom: 16px; }
.split .tick-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; color: var(--text-2); font-size: 15px; }
.split .tick-list .tk { width: 22px; height: 22px; border-radius: 50%; background: rgba(45,108,223,.12); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; flex-shrink: 0; margin-top: 3px; }

/* ---------- 报价 ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 30px; position: relative; transition: var(--tr); display: flex; flex-direction: column; }
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.price-card.hot { border-color: rgba(45,108,223,.5); box-shadow: var(--shadow-md); }
.price-card .hot-flag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--grad-main); color: #fff; font-size: 12.5px; font-weight: 700; padding: 5px 18px; border-radius: var(--radius-pill); letter-spacing: .06em; }
.price-card .pc-name { font-size: 17px; font-weight: 700; color: var(--text-2); }
.price-card .pc-price { margin: 18px 0 6px; display: flex; align-items: baseline; gap: 6px; }
.price-card .pc-price .cur { font-size: 20px; font-weight: 700; color: var(--blue); }
.price-card .pc-price .num { font-size: 48px; font-weight: 800; color: var(--ink-900); line-height: 1; font-family: "DIN Alternate","Arial Narrow",sans-serif; }
.price-card .pc-price .unit { font-size: 13px; color: var(--muted); }
.price-card .pc-desc { font-size: 13.5px; color: var(--muted); border-bottom: 1px dashed var(--line); padding-bottom: 18px; margin-bottom: 18px; }
.price-card ul li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--text-2); padding: 7px 0; }
.price-card ul li::before { content: "✓"; color: var(--cyan); font-weight: 800; }
.price-card .btn { margin-top: auto; }

/* ---------- 口碑 ---------- */
.tst-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.tst-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; position: relative; box-shadow: var(--shadow-sm); }
.tst-card .quote { font-size: 44px; font-family: Georgia, serif; color: var(--gold); line-height: 1; height: 30px; }
.tst-card p { font-size: 15px; color: var(--text-2); line-height: 1.9; margin: 14px 0 22px; }
.tst-card .tst-by { display: flex; align-items: center; gap: 12px; }
.tst-card .tst-by .av { width: 44px; height: 44px; border-radius: 50%; background: var(--grad-main); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; }
.tst-card .tst-by b { font-size: 15px; display: block; }
.tst-card .tst-by span { font-size: 12.5px; color: var(--muted); }
.stars { color: var(--gold); letter-spacing: 3px; font-size: 14px; }

/* ---------- 客户 / 平台 ---------- */
.client-cloud { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.client-item { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px 18px; text-align: center; font-weight: 700; color: var(--muted); font-size: 15px; letter-spacing: .02em; transition: var(--tr); }
.client-item:hover { color: var(--blue); border-color: rgba(45,108,223,.35); transform: translateY(-3px); box-shadow: var(--shadow-sm); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 14px; margin-bottom: 14px; overflow: hidden; transition: var(--tr); }
.faq-item.open { border-color: rgba(45,108,223,.4); box-shadow: var(--shadow-sm); }
.faq-q { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px; font-size: 16px; font-weight: 700; color: var(--text); cursor: pointer; }
.faq-q .fx { width: 26px; height: 26px; border-radius: 50%; background: rgba(45,108,223,.1); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 400; flex-shrink: 0; transition: var(--tr); }
.faq-item.open .fx { transform: rotate(45deg); background: var(--grad-main); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a p { padding: 0 24px 22px; color: var(--muted); font-size: 14.5px; line-height: 1.85; }

/* ---------- CTA 条幅 ---------- */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-lg); background: var(--grad-dark); padding: 64px 56px; color: #fff; }
.cta-band::before { content:""; position:absolute; inset:0; pointer-events:none;
  background-image: linear-gradient(rgba(120,170,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(120,170,255,.07) 1px, transparent 1px); background-size: 46px 46px; }
.cta-band::after { content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(600px 300px at 88% 10%, rgba(34,195,207,.2), transparent 60%), radial-gradient(500px 300px at 6% 96%, rgba(45,108,223,.24), transparent 60%); }
.cta-band .cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap; }
.cta-band h3 { font-size: 30px; font-weight: 800; line-height: 1.35; margin-bottom: 10px; }
.cta-band p { color: #AFC0DC; font-size: 16px; }
.cta-band .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 痛点卡 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pain-card { background: #fff; border: 1px solid var(--line); border-left: 4px solid #E05B5B; border-radius: 14px; padding: 28px 26px; box-shadow: var(--shadow-sm); transition: var(--tr); }
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.pain-card .pn { font-family: "DIN Alternate","Arial Narrow",sans-serif; font-size: 13px; font-weight: 800; letter-spacing: .1em; color: #E05B5B; margin-bottom: 12px; }
.pain-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.pain-card p { font-size: 14px; color: var(--muted); line-height: 1.8; }
.pain-card.solve { border-left-color: var(--cyan); }
.pain-card.solve .pn { color: var(--cyan); }

/* ---------- 对比表 ---------- */
.cmp-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.cmp-table th, .cmp-table td { padding: 17px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line); line-height: 1.7; }
.cmp-table thead th { background: var(--grad-dark); color: #fff; font-size: 15px; font-weight: 700; }
.cmp-table thead th:first-child { border-radius: 0; }
.cmp-table tbody th { font-weight: 700; color: var(--text); background: var(--bg-soft); width: 30%; font-size: 14px; }
.cmp-table tbody tr:last-child td, .cmp-table tbody tr:last-child th { border-bottom: none; }
.cmp-table .yes { color: #1395A0; font-weight: 800; }
.cmp-table .no { color: #C4CDDB; }
.cmp-table .best { background: rgba(34,195,207,.05); }

/* ---------- 双栏富文本块 ---------- */
.block-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; box-shadow: var(--shadow-sm); }
.block .b-no { font-family: "DIN Alternate","Arial Narrow",sans-serif; font-size: 13px; font-weight: 800; color: var(--gold-deep); letter-spacing: .1em; margin-bottom: 10px; }
.block h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.block p { font-size: 14.5px; color: var(--muted); line-height: 1.85; margin-bottom: 12px; }
.block ul li { font-size: 14px; color: var(--text-2); padding: 5px 0 5px 22px; position: relative; }
.block ul li::before { content:""; position:absolute; left:4px; top:15px; width:7px; height:7px; border-radius:2px; background: var(--grad-main); }

/* ---------- 服务条目行 ---------- */
.serve-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.serve-item { display: flex; gap: 14px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow-sm); transition: var(--tr); }
.serve-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(45,108,223,.3); }
.serve-item .si-ic { width: 46px; height: 46px; border-radius: 13px; background: var(--grad-main); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 21px; flex-shrink: 0; }
.serve-item .si-ic.gold { background: var(--grad-gold); color: #5B3A08; }
.serve-item .si-ic.cyan { background: linear-gradient(135deg,#22C3CF,#2D6CDF); }
.serve-item h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 5px; }
.serve-item p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ---------- 内联表单 ---------- */
.mini-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px 34px; box-shadow: var(--shadow-md); }
.mini-form h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.mini-form .mf-sub { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.mini-form .form-line { margin-bottom: 4px; }
.mini-form .btn { width: 100%; margin-top: 18px; }
.mini-form .mf-tip { text-align: center; color: var(--muted); font-size: 12.5px; margin-top: 12px; }

/* ---------- 引文条 ---------- */
.quote-strip { text-align: center; max-width: 900px; margin: 0 auto; }
.quote-strip .qs-mark { font-size: 64px; font-family: Georgia, serif; color: var(--gold); line-height: 1; }
.quote-strip p { font-size: 22px; font-weight: 700; color: var(--text); line-height: 1.7; margin: 18px 0 14px; }
.quote-strip span { font-size: 14px; color: var(--muted); letter-spacing: .04em; }

/* ---------- 页脚 ---------- */
.footer { background: var(--ink-900); color: #9FB2CC; position: relative; }
.footer::before { content:""; position:absolute; top:0; left:0; width:100%; height:3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan) 45%, var(--gold) 90%); }
.footer-main { padding: 72px 0 40px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand .f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-brand .f-logo img { width: 42px; height: 42px; }
.footer-brand .f-logo b { font-size: 19px; color: #fff; font-weight: 800; }
.footer-brand p { font-size: 14px; line-height: 1.9; }
.footer-brand .f-contact { margin-top: 18px; display: grid; gap: 8px; font-size: 14px; }
.footer-brand .f-contact b { color: var(--gold); font-weight: 700; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; letter-spacing: .04em; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content:""; position:absolute; left:0; bottom:0; width: 26px; height: 2px; background: var(--grad-main); border-radius: 2px; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul li a { font-size: 14px; color: #9FB2CC; transition: var(--tr); }
.footer-col ul li a:hover { color: var(--gold); padding-left: 4px; }
.footer-sub { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: #6F84A5; }
.footer-sub a { color: #6F84A5; }
.footer-sub a:hover { color: var(--gold); }

/* ---------- 通用小工具 ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 20px; } .mt-2 { margin-top: 40px; } .mt-3 { margin-top: 60px; }
.mb-1 { margin-bottom: 20px; } .mb-2 { margin-bottom: 40px; } .mb-3 { margin-bottom: 60px; }
.pill-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-line { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.field input, .field textarea, .field select { width: 100%; padding: 13px 16px; border: 1.4px solid var(--line); border-radius: 12px; font-size: 15px; color: var(--text); background: #fff; outline: none; transition: var(--tr); }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(45,108,223,.1); }
.field.full { grid-column: 1 / -1; }

/* ---------- 动画 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(34px); } to { opacity: 1; transform: translateY(0); } }
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes pulse { 0%,100% { opacity: .5; } 50% { opacity: 1; } }
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.float-anim { animation: floatY 5s ease-in-out infinite; }
.blink { animation: pulse 2.4s ease-in-out infinite; }

/* ---------- 文章/通用正文 ---------- */
.prose { color: var(--text-2); line-height: 2; font-size: 15.5px; }
.prose h3 { color: var(--text); font-size: 20px; margin: 26px 0 12px; }
.prose p { margin-bottom: 16px; }
.prose ul { margin: 0 0 16px; }
.prose ul li { padding-left: 22px; position: relative; margin-bottom: 8px; }
.prose ul li::before { content:""; position: absolute; left: 4px; top: 12px; width: 8px; height: 8px; border-radius: 2px; background: var(--grad-main); }
.prose blockquote { border-left: 3px solid var(--gold); background: rgba(227,180,90,.08); padding: 14px 20px; border-radius: 0 12px 12px 0; margin: 18px 0; color: var(--text-2); }

/* ---------- 响应式 ---------- */
@media (max-width: 1240px) {
  .nav-list > li > a { padding: 10px 9px; font-size: 14px; }
  .brand-name strong { font-size: 17px; }
  .header-inner { gap: 14px; }
  .nav-cta { padding: 10px 20px; font-size: 14px; }
  .mega { width: 760px; }
}
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr 1fr; }
  .client-cloud { grid-template-columns: repeat(3, 1fr); }
  .mega { width: 640px; grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .main-nav, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 150px 0 80px; }
  .hero h1 { font-size: 40px; }
  .hero-split { padding: 150px 0 80px; }
  .hero-split .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-split h1 { font-size: 38px; }
  .hero-mini { padding: 130px 0 56px; }
  .hero-mini h1 { font-size: 32px; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .pricing-grid, .tst-grid, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-band .container { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .stat-box:nth-child(2)::after { display: none; }
  .float-tl { left: -6px; }
  .float-br { right: -6px; }
  .cta-band { padding: 44px 28px; }
  .cta-band h3 { font-size: 24px; }
  .pain-grid, .block-grid { grid-template-columns: 1fr; }
  .serve-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .hero h1 { font-size: 31px; }
  .hero-sub { font-size: 15.5px; }
  .hero-meta { gap: 20px; }
  .hero-meta .m b { font-size: 24px; }
  .grid-4, .grid-3, .grid-2, .client-cloud { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-sub { flex-direction: column; text-align: center; }
  .form-line { grid-template-columns: 1fr; }
  .stat-box .val { font-size: 38px; }
  .hero-split h1 { font-size: 29px; }
}