/* ==========================================================================
   依之熙信息科技有限公司 — 简约商务风格设计系统
   ========================================================================== */

:root {
  /* 主色：沉稳商务蓝 */
  --c-primary: #1a4d8f;
  --c-primary-dark: #123869;
  --c-primary-light: #2f6cb8;
  --c-primary-soft: #eef4fb;
  --c-primary-soft-2: #dde9f7;

  /* 强调色：AI 科技青蓝渐变 */
  --c-accent: #0a99c4;
  --c-accent-dark: #07809f;
  --c-accent-soft: #e8f7fb;
  --grad-ai: linear-gradient(120deg, #1a4d8f 0%, #0a7fb8 55%, #0aa9c4 100%);

  /* 中性色 */
  --c-text: #1f2a37;
  --c-text-2: #4b5563;
  --c-text-3: #7b8794;
  --c-line: #e5e9ef;
  --c-line-2: #eef1f6;
  --c-bg: #ffffff;
  --c-bg-soft: #f7f9fc;
  --c-bg-soft-2: #f1f5fa;

  /* 尺寸 */
  --max-w: 1200px;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(19, 43, 76, .06);
  --shadow: 0 4px 16px rgba(19, 43, 76, .08);
  --shadow-lg: 0 12px 36px rgba(19, 43, 76, .12);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
img { max-width: 100%; display: block; border: 0; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }

/* ---------- 布局工具 ---------- */
.wrap { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--soft { background: var(--c-bg-soft); }
.section--tight { padding: 64px 0; }
.tc { text-align: center; }

/* ---------- 区块标题 ---------- */
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.sec-head .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 2px; font-weight: 600;
  color: var(--c-accent); text-transform: uppercase; margin-bottom: 12px;
}
.sec-head h2 {
  font-size: 32px; line-height: 1.35; font-weight: 700; color: var(--c-text);
  letter-spacing: .5px; margin-bottom: 14px;
}
.sec-head h2 em { font-style: normal; color: var(--c-primary); }
.sec-head p { font-size: 15px; color: var(--c-text-2); }
.sec-head--left { text-align: left; margin-left: 0; }
.sec-head .rule {
  width: 48px; height: 3px; background: var(--grad-ai);
  border-radius: 3px; margin: 18px auto 0;
}
.sec-head--left .rule { margin-left: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 30px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  transition: all .28s var(--ease); white-space: nowrap;
}
.btn--primary { background: var(--c-primary); color: #fff; box-shadow: 0 4px 14px rgba(26, 77, 143, .22); }
.btn--primary:hover { background: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(26, 77, 143, .3); }
.btn--ai { background: var(--grad-ai); color: #fff; box-shadow: 0 4px 16px rgba(10, 127, 184, .28); }
.btn--ai:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(10, 127, 184, .36); }
.btn--ghost { border-color: rgba(255, 255, 255, .55); color: #fff; }
.btn--ghost:hover { background: rgba(255, 255, 255, .14); border-color: #fff; }
.btn--line { border-color: var(--c-line); color: var(--c-text); background: #fff; }
.btn--line:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn--sm { height: 38px; padding: 0 20px; font-size: 14px; }
.btn--block { width: 100%; }

/* ==========================================================================
   顶部导航
   ========================================================================== */
.topbar {
  background: var(--c-primary-dark); color: rgba(255, 255, 255, .8);
  font-size: 13px; height: 36px; display: flex; align-items: center;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; }
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 22px; align-items: center; }
.topbar .tb-right .tel { color: #fff; font-weight: 600; }

.header {
  position: sticky; top: 0; z-index: 900; background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-line); transition: box-shadow .3s var(--ease);
}
.header.is-scrolled { box-shadow: 0 2px 18px rgba(19, 43, 76, .1); }
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo .mark {
  width: 40px; height: 40px; border-radius: 8px; background: var(--grad-ai);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 19px;
  letter-spacing: -.5px; flex: none; box-shadow: 0 3px 10px rgba(26, 77, 143, .25);
}
.logo .mark img { height: 34px; width: auto; display: block; }
.logo .txt strong { display: block; font-size: 18px; font-weight: 700; color: var(--c-text); letter-spacing: .5px; line-height: 1.25; }
.logo .txt span { display: block; font-size: 10.5px; color: var(--c-text-3); letter-spacing: 1.4px; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li > a {
  display: block; padding: 10px 16px; font-size: 15px; font-weight: 500;
  color: var(--c-text-2); border-radius: var(--radius); position: relative;
}
.nav > li > a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 2px;
  background: var(--grad-ai); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav > li > a:hover, .nav > li > a.active { color: var(--c-primary); }
.nav > li > a:hover::after, .nav > li > a.active::after { transform: scaleX(1); }
.nav .has-drop { position: relative; }
.drop {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 220px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 8px; opacity: 0; visibility: hidden; transition: all .28s var(--ease);
}
.nav .has-drop:hover .drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop a { display: block; padding: 9px 14px; font-size: 14px; color: var(--c-text-2); border-radius: var(--radius); }
.drop a:hover { background: var(--c-primary-soft); color: var(--c-primary); }

.header-cta { display: flex; align-items: center; gap: 14px; }

/* 汉堡菜单 */
.burger { display: none; width: 40px; height: 40px; border: 0; background: none; cursor: pointer; flex-direction: column; justify-content: center; gap: 5px; align-items: center; }
.burger span { display: block; width: 22px; height: 2px; background: var(--c-text); border-radius: 2px; transition: .3s var(--ease); }
.burger.on span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.on span:nth-child(2) { opacity: 0; }
.burger.on span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mnav {
  position: fixed; inset: 0 0 0 auto; width: min(88vw, 340px); background: #fff; z-index: 1000;
  transform: translateX(100%); transition: transform .34s var(--ease); overflow-y: auto;
  box-shadow: -8px 0 32px rgba(19, 43, 76, .16); padding: 22px;
}
.mnav.open { transform: none; }
.mnav .mnav-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.mnav .close { border: 0; background: none; font-size: 26px; line-height: 1; color: var(--c-text-3); cursor: pointer; }
.mnav a.m-item { display: block; padding: 13px 4px; border-bottom: 1px solid var(--c-line-2); font-size: 16px; font-weight: 500; color: var(--c-text); }
.mnav a.m-item:hover { color: var(--c-primary); }
.mnav .m-sub { padding: 4px 0 8px 14px; }
.mnav .m-sub a { display: block; padding: 8px 0; font-size: 14px; color: var(--c-text-3); }
.mnav .btn { margin-top: 20px; }
.mask { position: fixed; inset: 0; background: rgba(15, 30, 52, .5); z-index: 999; opacity: 0; visibility: hidden; transition: .3s var(--ease); }
.mask.on { opacity: 1; visibility: visible; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background: #0d2c52; min-height: 600px;
  display: flex; align-items: center;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; background: linear-gradient(115deg, #0c2544 0%, #103a68 48%, #0d4f78 100%); }
.hero__bg-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1.1s var(--ease);
}
.hero__bg-slide.on { opacity: 1; }
.hero__bg-slide::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 460px at 78% 18%, rgba(10, 169, 196, .38), transparent 62%),
    radial-gradient(700px 420px at 12% 82%, rgba(26, 77, 143, .55), transparent 60%);
}
.hero__bg-slide.b2::before {
  background:
    radial-gradient(860px 480px at 22% 22%, rgba(10, 169, 196, .34), transparent 62%),
    radial-gradient(760px 440px at 84% 78%, rgba(26, 77, 143, .6), transparent 60%);
}
.hero__bg-slide.b3::before {
  background:
    radial-gradient(820px 440px at 62% 74%, rgba(10, 169, 196, .32), transparent 64%),
    radial-gradient(700px 460px at 8% 26%, rgba(20, 62, 116, .62), transparent 62%);
}
.hero__dots { position: absolute; z-index: 4; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 9px; }
.hero__dots .hs-dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .35); cursor: pointer; transition: .3s var(--ease); }
.hero__dots .hs-dot.on { background: #fff; width: 26px; border-radius: 100px; }
.hero__grid {
  position: absolute; inset: 0; opacity: .16;
  background-image:
    linear-gradient(rgba(255, 255, 255, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .55) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 65% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 65% 40%, #000 0%, transparent 78%);
}
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; padding-top: 66px; padding-bottom: 66px; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px; height: 32px; padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, .32); background: rgba(255, 255, 255, .1);
  border-radius: 100px; font-size: 13px; color: #cfe9f5; margin-bottom: 22px; backdrop-filter: blur(4px);
}
.hero__badge i { width: 7px; height: 7px; border-radius: 50%; background: #4fd0e8; box-shadow: 0 0 0 4px rgba(79, 208, 232, .22); display: block; }
.hero h1 { font-size: 46px; line-height: 1.24; font-weight: 800; letter-spacing: .5px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg, #6fd6ec, #a8e6f7 55%, #ffffff); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.hero__lead { font-size: 17px; line-height: 1.85; color: rgba(255, 255, 255, .82); max-width: 560px; margin-bottom: 14px; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 32px; }
.hero__tags span {
  font-size: 13.5px; color: #dceffa; padding: 7px 15px; border-radius: 100px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Hero 右侧 AI 卡片 */
.hero__panel {
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 14px; padding: 22px; backdrop-filter: blur(10px); box-shadow: 0 22px 60px rgba(4, 18, 36, .38);
}
.hero__panel .hp-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .14); margin-bottom: 16px; }
.hero__panel .hp-head b { font-size: 15px; color: #fff; font-weight: 600; }
.hero__panel .hp-head i { font-style: normal; font-size: 11.5px; color: #7fe0f2; border: 1px solid rgba(127, 224, 242, .45); padding: 2px 9px; border-radius: 100px; }
.hp-flow { display: flex; flex-direction: column; gap: 10px; }
.hp-step {
  display: flex; gap: 12px; align-items: flex-start; padding: 13px 15px; border-radius: 10px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); transition: .3s var(--ease);
}
.hp-step:hover { background: rgba(255, 255, 255, .13); transform: translateX(4px); }
.hp-step .n {
  width: 26px; height: 26px; flex: none; border-radius: 7px; display: grid; place-items: center;
  font-size: 12.5px; font-weight: 700; color: #fff; background: var(--grad-ai);
}
.hp-step .d b { display: block; font-size: 14px; color: #fff; font-weight: 600; margin-bottom: 2px; }
.hp-step .d p { font-size: 12.5px; color: rgba(255, 255, 255, .66); line-height: 1.6; }
.hp-note { margin-top: 14px; font-size: 12.5px; color: rgba(255, 255, 255, .58); display: flex; align-items: center; gap: 7px; }
.hp-note::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #4fd0e8; flex: none; }

/* 数字条 */
.hero__stats {
  position: relative; z-index: 2; border-top: 1px solid rgba(255, 255, 255, .14);
  background: rgba(4, 18, 36, .3);
}
.hero__stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); padding-top: 26px; padding-bottom: 26px; }
.hero__stats .st { text-align: center; border-right: 1px solid rgba(255, 255, 255, .12); }
.hero__stats .st:last-child { border-right: 0; }
.hero__stats b { display: block; font-size: 30px; font-weight: 800; color: #fff; line-height: 1.2; letter-spacing: .5px; }
.hero__stats b small { font-size: 15px; font-weight: 600; margin-left: 2px; }
.hero__stats span { font-size: 13px; color: rgba(255, 255, 255, .66); }

/* ==========================================================================
   页面内页头
   ========================================================================== */
.pagehead {
  position: relative; overflow: hidden; color: #fff; padding: 66px 0 60px;
  background: linear-gradient(115deg, #0c2544 0%, #123869 55%, #0d4a72 100%);
}
.pagehead::after {
  content: ""; position: absolute; inset: 0; opacity: .14;
  background-image: linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at 75% 30%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 75% 30%, #000, transparent 76%);
}
.pagehead .wrap { position: relative; z-index: 2; }
.pagehead h1 { font-size: 34px; font-weight: 800; letter-spacing: .5px; margin-bottom: 10px; }
.pagehead p { font-size: 15px; color: rgba(255, 255, 255, .78); max-width: 680px; }
.crumb { font-size: 13px; color: rgba(255, 255, 255, .6); margin-top: 20px; }
.crumb a:hover { color: #fff; }
.crumb span { margin: 0 7px; opacity: .55; }

/* ==========================================================================
   AI 核心能力（重点板块）
   ========================================================================== */
.ai-band { background: linear-gradient(180deg, #f4f8fd 0%, #eaf2fb 100%); position: relative; overflow: hidden; }
.ai-band::before {
  content: ""; position: absolute; top: -180px; right: -160px; width: 520px; height: 520px;
  border-radius: 50%; background: radial-gradient(circle, rgba(10, 169, 196, .14), transparent 68%);
}
.ai-band .wrap { position: relative; z-index: 2; }

.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 34px 30px 30px; position: relative; overflow: hidden;
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
  display: flex; flex-direction: column;
}
.ai-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-ai); transform: scaleX(0); transform-origin: left; transition: transform .38s var(--ease);
}
.ai-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--c-primary-soft-2); }
.ai-card:hover::before { transform: scaleX(1); }
.ai-card .ic {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: var(--c-primary-soft); color: var(--c-primary); margin-bottom: 22px; transition: .32s var(--ease);
}
.ai-card:hover .ic { background: var(--grad-ai); color: #fff; box-shadow: 0 8px 20px rgba(10, 127, 184, .3); }
.ai-card .ic svg { width: 27px; height: 27px; }
.ai-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--c-text); }
.ai-card > p { font-size: 14.5px; color: var(--c-text-2); line-height: 1.8; margin-bottom: 18px; }
.ai-card .pts { display: flex; flex-direction: column; gap: 9px; margin-top: auto; padding-top: 6px; }
.ai-card .pts li { font-size: 13.5px; color: var(--c-text-2); padding-left: 20px; position: relative; line-height: 1.6; }
.ai-card .pts li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 2px;
  background: var(--c-accent); opacity: .85;
}
.ai-card .badge-ai {
  position: absolute; top: 22px; right: 22px; font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: var(--c-accent-dark); background: var(--c-accent-soft); padding: 4px 10px; border-radius: 100px;
}

/* 流程横向条 */
.flowbar { margin-top: 34px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg); overflow: hidden; }
.flowbar .fb {
  padding: 22px 20px; position: relative; border-right: 1px solid var(--c-line-2); transition: background .3s var(--ease);
}
.flowbar .fb:last-child { border-right: 0; }
.flowbar .fb:hover { background: var(--c-primary-soft); }
.flowbar .fb .k { font-size: 12px; font-weight: 700; color: var(--c-accent); letter-spacing: 1.5px; margin-bottom: 7px; }
.flowbar .fb b { display: block; font-size: 15px; font-weight: 600; color: var(--c-text); margin-bottom: 5px; }
.flowbar .fb p { font-size: 12.5px; color: var(--c-text-3); line-height: 1.6; }
.flowbar .fb::after {
  content: ""; position: absolute; right: -6px; top: 50%; transform: translateY(-50%) rotate(45deg);
  width: 11px; height: 11px; background: #fff; border-top: 1px solid var(--c-line); border-right: 1px solid var(--c-line); z-index: 2;
}
.flowbar .fb:last-child::after { display: none; }

/* ==========================================================================
   服务列表
   ========================================================================== */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.svc-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 28px 24px; transition: all .3s var(--ease); position: relative; overflow: hidden;
  display: flex; flex-direction: column; min-height: 208px;
}
.svc-card:hover { border-color: var(--c-primary-light); box-shadow: var(--shadow); transform: translateY(-5px); }
.svc-card .si {
  width: 44px; height: 44px; border-radius: 10px; background: var(--c-primary-soft);
  display: grid; place-items: center; color: var(--c-primary); margin-bottom: 16px; transition: .3s var(--ease);
}
.svc-card:hover .si { background: var(--c-primary); color: #fff; }
.svc-card .si svg { width: 22px; height: 22px; }
.svc-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 9px; color: var(--c-text); }
.svc-card p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.75; flex: 1; }
.svc-card .more { font-size: 13px; font-weight: 600; color: var(--c-primary); margin-top: 14px; display: inline-flex; align-items: center; gap: 5px; }
.svc-card .more::after { content: "→"; transition: transform .3s var(--ease); }
.svc-card:hover .more::after { transform: translateX(4px); }
.svc-card.is-ai { border-color: #b8e4f2; background: linear-gradient(165deg, #f4fcff 0%, #ffffff 62%); }
.svc-card.is-ai .si { background: var(--c-accent-soft); color: var(--c-accent-dark); }
.svc-card.is-ai:hover .si { background: var(--grad-ai); color: #fff; }

/* ==========================================================================
   服务流程（时间轴）
   ========================================================================== */
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px; position: relative; }
.process::before {
  content: ""; position: absolute; top: 27px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, var(--c-primary-soft-2), var(--c-primary-light), var(--c-accent), var(--c-primary-light), var(--c-primary-soft-2));
  opacity: .55;
}
.proc { text-align: center; position: relative; z-index: 2; }
.proc .dot {
  width: 54px; height: 54px; margin: 0 auto 18px; border-radius: 50%; background: #fff;
  border: 2px solid var(--c-primary-soft-2); display: grid; place-items: center;
  font-size: 17px; font-weight: 800; color: var(--c-primary); transition: .32s var(--ease);
}
.proc:hover .dot { background: var(--grad-ai); color: #fff; border-color: transparent; transform: scale(1.1); box-shadow: 0 8px 22px rgba(10, 127, 184, .3); }
.proc h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 10px; }
.proc ul { font-size: 13px; color: var(--c-text-2); line-height: 1.9; }
.proc ul li { padding-left: 12px; position: relative; }
.proc ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 4px; height: 4px; border-radius: 50%; background: var(--c-text-3); }

/* ==========================================================================
   解决方案
   ========================================================================== */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.sol-grid--3 { grid-template-columns: repeat(3, 1fr); }
.sol-card {
  border: 1px solid var(--c-line); border-radius: var(--radius-lg); overflow: hidden; background: #fff;
  transition: all .32s var(--ease); display: flex; flex-direction: column;
}
.sol-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: var(--c-primary-soft-2); }
.sol-card .visual {
  height: 168px; background: var(--grad-ai); position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.sol-card .visual::after {
  content: ""; position: absolute; inset: 0; opacity: .22;
  background-image: linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 30px 30px;
}
.sol-card .visual .vt { position: relative; z-index: 2; text-align: center; color: #fff; }
.sol-card .visual .vt .ico { font-size: 30px; margin-bottom: 8px; line-height: 1; }
.sol-card .visual .vt b { display: block; font-size: 17px; font-weight: 700; letter-spacing: .5px; }
.sol-card .visual .vt small { font-size: 12px; opacity: .8; letter-spacing: 1px; }
.sol-card .body { padding: 24px 26px 26px; flex: 1; display: flex; flex-direction: column; }
.sol-card .body h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; }
.sol-card .body h3 a:hover { color: var(--c-primary); }
.sol-card .body p { font-size: 14px; color: var(--c-text-2); line-height: 1.8; flex: 1; }
.sol-card .body .tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 18px; }
.sol-card .body .tags span { font-size: 12px; color: var(--c-primary); background: var(--c-primary-soft); padding: 4px 11px; border-radius: 100px; }
.sol-card .body .more { font-size: 13.5px; font-weight: 600; color: var(--c-primary); display: inline-flex; align-items: center; gap: 6px; }
.sol-card .body .more::after { content: "→"; transition: transform .3s var(--ease); }
.sol-card:hover .body .more::after { transform: translateX(4px); }

/* ==========================================================================
   优势 / 关于
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split__visual { border-radius: 14px; overflow: hidden; position: relative; box-shadow: var(--shadow-lg); }
.split__visual .vbars { background: var(--grad-ai); padding: 40px 36px; color: #fff; position: relative; overflow: hidden; }
.split__visual .vbars::after {
  content: ""; position: absolute; inset: 0; opacity: .18;
  background-image: linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 34px 34px;
}
.split__visual .vbars h4 { position: relative; z-index: 2; font-size: 21px; font-weight: 700; margin-bottom: 8px; }
.split__visual .vbars > p { position: relative; z-index: 2; font-size: 14px; color: rgba(255, 255, 255, .82); margin-bottom: 26px; }
.split__visual .vstats { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.split__visual .vstats .vs { background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .2); border-radius: 10px; padding: 16px 12px; text-align: center; }
.split__visual .vstats .vs b { display: block; font-size: 24px; font-weight: 800; }
.split__visual .vstats .vs span { font-size: 12px; color: rgba(255, 255, 255, .8); }
.split__text .eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px; color: var(--c-accent); text-transform: uppercase; margin-bottom: 12px; }
.split__text h2 { font-size: 30px; font-weight: 700; line-height: 1.4; margin-bottom: 18px; letter-spacing: .5px; }
.split__text p { font-size: 15px; color: var(--c-text-2); line-height: 1.9; margin-bottom: 16px; }
.split__text .culture { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 26px; }
.split__text .culture span { font-size: 13.5px; font-weight: 600; color: var(--c-primary); border: 1px solid var(--c-primary-soft-2); background: var(--c-primary-soft); padding: 7px 16px; border-radius: 100px; }

/* 特色网格 */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feat { text-align: center; padding: 30px 20px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--c-line); transition: all .3s var(--ease); }
.feat:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--c-primary-soft-2); }
.feat .fi { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; background: var(--c-primary-soft); display: grid; place-items: center; color: var(--c-primary); transition: .3s var(--ease); }
.feat:hover .fi { background: var(--grad-ai); color: #fff; }
.feat .fi svg { width: 25px; height: 25px; }
.feat h3 { font-size: 16px; font-weight: 700; margin-bottom: 9px; }
.feat p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.75; }

/* ==========================================================================
   在线联系
   ========================================================================== */
.contact-band { background: linear-gradient(120deg, #0d2c52 0%, #134272 58%, #0d4f78 100%); color: #fff; position: relative; overflow: hidden; }
.contact-band::before {
  content: ""; position: absolute; inset: 0; opacity: .13;
  background-image: linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 30% 30%, #000, transparent 74%);
  -webkit-mask-image: radial-gradient(circle at 30% 30%, #000, transparent 74%);
}
.contact-band .wrap { position: relative; z-index: 2; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.06fr; gap: 56px; align-items: start; }
.contact-grid h2 { font-size: 32px; font-weight: 800; line-height: 1.35; margin-bottom: 16px; letter-spacing: .5px; }
.contact-grid .cl { font-size: 15.5px; color: rgba(255, 255, 255, .82); line-height: 1.9; margin-bottom: 30px; }
.contact-list { display: flex; flex-direction: column; gap: 18px; }
.contact-list .ci { display: flex; gap: 15px; align-items: flex-start; }
.contact-list .ci .cic {
  width: 42px; height: 42px; flex: none; border-radius: 10px; display: grid; place-items: center;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .18); color: #8fdcf0;
}
.contact-list .ci .cic svg { width: 20px; height: 20px; }
.contact-list .ci .ct b { display: block; font-size: 12.5px; color: rgba(255, 255, 255, .6); font-weight: 500; margin-bottom: 3px; }
.contact-list .ci .ct p { font-size: 15.5px; color: #fff; font-weight: 600; }
.contact-list .ci .ct p a:hover { color: #8fdcf0; }

.form-card { background: #fff; border-radius: 14px; padding: 34px; box-shadow: 0 22px 60px rgba(4, 18, 36, .34); }
.form-card h3 { font-size: 20px; font-weight: 700; color: var(--c-text); margin-bottom: 6px; }
.form-card .fc-sub { font-size: 13.5px; color: var(--c-text-3); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--c-text-2); margin-bottom: 7px; }
.field label i { color: #d64545; font-style: normal; margin-left: 3px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 11px 14px; font-size: 14.5px; color: var(--c-text); background: var(--c-bg-soft);
  transition: all .25s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--c-primary-light); background: #fff; box-shadow: 0 0 0 3px rgba(47, 108, 184, .12);
}
.field textarea { resize: vertical; min-height: 92px; line-height: 1.7; }
.field .err { font-size: 12.5px; color: #d64545; margin-top: 5px; display: none; }
.field.has-err input, .field.has-err textarea, .field.has-err select { border-color: #d64545; }
.field.has-err .err { display: block; }
.form-note { font-size: 12.5px; color: var(--c-text-3); margin-top: 14px; line-height: 1.7; text-align: center; }
.form-ok {
  display: none; text-align: center; padding: 34px 16px;
}
.form-ok.show { display: block; }
.form-ok .okic { width: 62px; height: 62px; margin: 0 auto 18px; border-radius: 50%; background: #eaf6ee; display: grid; place-items: center; color: #2e9e57; }
.form-ok .okic svg { width: 30px; height: 30px; }
.form-ok h4 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.form-ok p { font-size: 14px; color: var(--c-text-2); line-height: 1.8; }

/* ==========================================================================
   合作伙伴
   ========================================================================== */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.partner-grid .pt {
  height: 84px; border: 1px solid var(--c-line); border-radius: var(--radius);
  display: grid; place-items: center; background: #fff; color: var(--c-text-3);
  font-size: 14px; font-weight: 600; letter-spacing: .5px; transition: all .3s var(--ease);
}
.partner-grid .pt:hover { border-color: var(--c-primary-light); color: var(--c-primary); box-shadow: var(--shadow-sm); transform: translateY(-3px); }

/* ==========================================================================
   新闻 / 动态
   ========================================================================== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { border: 1px solid var(--c-line); border-radius: var(--radius-lg); background: #fff; overflow: hidden; transition: all .32s var(--ease); }
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.news-card .nv { height: 130px; background: var(--grad-ai); position: relative; overflow: hidden; }
.news-card .nv::after {
  content: ""; position: absolute; inset: 0; opacity: .2;
  background-image: linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 28px 28px;
}
.news-card .nv .tag { position: absolute; z-index: 2; top: 14px; left: 14px; font-size: 12px; font-weight: 600; color: #fff; background: rgba(255, 255, 255, .22); border: 1px solid rgba(255, 255, 255, .35); padding: 4px 11px; border-radius: 100px; backdrop-filter: blur(4px); }
.news-card .nb { padding: 22px 24px 26px; }
.news-card .nb h3 { font-size: 16.5px; font-weight: 700; line-height: 1.55; margin-bottom: 10px; }
.news-card:hover .nb h3 { color: var(--c-primary); }
.news-card .nb p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.8; }
.news-card .nb .mt { font-size: 12.5px; color: var(--c-text-3); margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--c-line-2); display: flex; justify-content: space-between; }

/* ==========================================================================
   文章正文（方案详情）
   ========================================================================== */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 44px; align-items: start; }
.article { background: #fff; }
.article h1.at { font-size: 27px; font-weight: 800; line-height: 1.45; margin-bottom: 16px; letter-spacing: .3px; }
.article .ameta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--c-text-3); padding-bottom: 20px; border-bottom: 1px solid var(--c-line); margin-bottom: 30px; }
.article .ameta b { color: var(--c-primary); font-weight: 600; background: var(--c-primary-soft); padding: 3px 11px; border-radius: 100px; }
.article h2 {
  font-size: 21px; font-weight: 700; color: var(--c-text); margin: 40px 0 16px;
  padding-left: 14px; border-left: 4px solid var(--c-primary); line-height: 1.4;
}
.article h3 { font-size: 17px; font-weight: 700; color: var(--c-primary-dark); margin: 28px 0 12px; }
.article h4 { font-size: 15.5px; font-weight: 700; color: var(--c-text); margin: 20px 0 10px; }
.article p { font-size: 15px; color: var(--c-text-2); line-height: 1.95; margin-bottom: 14px; text-align: justify; }
.article ul { margin: 12px 0 18px; }
.article ul li { font-size: 14.5px; color: var(--c-text-2); line-height: 1.9; padding-left: 22px; position: relative; margin-bottom: 8px; }
.article ul li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 7px; height: 7px; border-radius: 2px; background: var(--c-accent); opacity: .85; }
.article ul li b { color: var(--c-text); font-weight: 600; }
.article .hl {
  background: var(--c-primary-soft); border-left: 4px solid var(--c-primary-light);
  padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0; margin: 20px 0;
}
.article .hl p { margin: 0; font-size: 14.5px; color: var(--c-primary-dark); }
.article table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: 14px; }
.article table th, .article table td { border: 1px solid var(--c-line); padding: 11px 14px; text-align: left; }
.article table th { background: var(--c-bg-soft-2); font-weight: 700; color: var(--c-text); font-size: 13.5px; }
.article table td { color: var(--c-text-2); }

.aside { position: sticky; top: 96px; }
.aside .abox { border: 1px solid var(--c-line); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 22px; background: #fff; }
.aside .abox .ah { padding: 15px 20px; background: var(--c-bg-soft-2); font-size: 15px; font-weight: 700; color: var(--c-text); border-bottom: 1px solid var(--c-line); }
.aside .abox .ab { padding: 10px; }
.aside .abox .ab a { display: block; padding: 11px 14px; font-size: 14px; color: var(--c-text-2); border-radius: var(--radius); }
.aside .abox .ab a:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.aside .abox .ab a.on { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 600; }
.aside .cta-box { background: var(--grad-ai); color: #fff; border-radius: var(--radius-lg); padding: 26px 24px; text-align: center; }
.aside .cta-box h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.aside .cta-box p { font-size: 13.5px; color: rgba(255, 255, 255, .84); line-height: 1.75; margin-bottom: 18px; }
.aside .cta-box .btn { background: #fff; color: var(--c-primary); box-shadow: none; }
.aside .cta-box .btn:hover { background: #eaf4ff; }

/* ==========================================================================
   CTA 通用条
   ========================================================================== */
.cta-strip {
  background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: 14px;
  padding: 40px 44px; display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap;
}
.cta-strip h3 { font-size: 23px; font-weight: 700; margin-bottom: 7px; }
.cta-strip p { font-size: 14.5px; color: var(--c-text-2); }
.cta-strip .acts { display: flex; gap: 14px; flex-wrap: wrap; }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer { background: #0d1d33; color: rgba(255, 255, 255, .68); padding: 60px 0 0; font-size: 14px; }
.footer .fgrid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.25fr; gap: 40px; padding-bottom: 44px; }
.footer h4 { font-size: 15.5px; color: #fff; font-weight: 700; margin-bottom: 20px; }
.footer .fabout .fl { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer .fabout .fl .mark { width: 46px; height: 46px; border-radius: 9px; background: #fff; display: grid; place-items: center; padding: 7px; }
.footer .fabout .fl .mark img { max-width: 100%; max-height: 100%; display: block; }
.footer .fabout .fl strong { font-size: 17px; color: #fff; font-weight: 700; }
.footer .fabout p { font-size: 13.5px; line-height: 1.9; color: rgba(255, 255, 255, .6); }
.footer .fabout .fsoc { display: flex; gap: 10px; margin-top: 18px; }
.footer .fabout .fsoc span { width: 34px; height: 34px; border-radius: 8px; background: rgba(255, 255, 255, .08); display: grid; place-items: center; font-size: 12px; color: rgba(255, 255, 255, .75); transition: .25s var(--ease); }
.footer .fabout .fsoc span:hover { background: var(--c-primary-light); color: #fff; }
.footer ul.flinks li { margin-bottom: 11px; }
.footer ul.flinks a { font-size: 13.5px; color: rgba(255, 255, 255, .6); }
.footer ul.flinks a:hover { color: #fff; }
.footer .fcontact p { font-size: 13.5px; line-height: 1.8; margin-bottom: 12px; color: rgba(255, 255, 255, .62); display: flex; gap: 9px; }
.footer .fcontact p span { color: rgba(255, 255, 255, .4); flex: none; min-width: 42px; }
.footer .fcontact p b { color: #fff; font-weight: 600; }
.footer .fcontact a:hover b { color: #8fdcf0; }
.footer .fbot { border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .48); }
.footer .fbot a { color: rgba(255, 255, 255, .48); }
.footer .fbot a:hover { color: #fff; }

/* ==========================================================================
   浮动侧栏 / 返回顶部
   ========================================================================== */
.floatbar { position: fixed; right: 18px; bottom: 30px; z-index: 800; display: flex; flex-direction: column; gap: 10px; }
.floatbar a, .floatbar button {
  width: 48px; height: 48px; border-radius: 10px; background: #fff; border: 1px solid var(--c-line);
  display: grid; place-items: center; cursor: pointer; color: var(--c-primary); box-shadow: var(--shadow);
  transition: all .28s var(--ease); position: relative;
}
.floatbar a:hover, .floatbar button:hover { background: var(--c-primary); color: #fff; border-color: var(--c-primary); transform: translateY(-3px); }
.floatbar svg { width: 21px; height: 21px; }
.floatbar .fb-tip {
  position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%);
  background: var(--c-text); color: #fff; font-size: 12.5px; padding: 7px 12px; border-radius: var(--radius);
  white-space: nowrap; opacity: 0; visibility: hidden; transition: .25s var(--ease); pointer-events: none;
}
.floatbar a:hover .fb-tip, .floatbar button:hover .fb-tip { opacity: 1; visibility: visible; }
#backTop { opacity: 0; visibility: hidden; }
#backTop.show { opacity: 1; visibility: visible; }

/* 二维码弹层 */
.qr-modal { position: fixed; inset: 0; z-index: 1200; display: none; place-items: center; background: rgba(11, 24, 43, .62); }
.qr-modal.on { display: grid; }
.qr-modal .qbox { background: #fff; border-radius: 14px; padding: 30px; text-align: center; box-shadow: var(--shadow-lg); width: min(90vw, 320px); }
.qr-modal .qbox h4 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.qr-modal .qbox p { font-size: 13px; color: var(--c-text-3); margin-bottom: 18px; }
.qr-modal .qbox .qrimg { width: 190px; height: 190px; margin: 0 auto 18px; border: 1px solid var(--c-line); border-radius: 10px; display: grid; place-items: center; background: var(--c-bg-soft); }
.qr-modal .qbox .qrimg svg { width: 160px; height: 160px; }

/* ==========================================================================
   合作伙伴（真实 logo 墙）
   ========================================================================== */
.partner-wall {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 26px; box-shadow: var(--shadow-sm);
}
.partner-wall img { width: 100%; height: auto; display: block; }

/* ==========================================================================
   AI 应用各行业开发（独立板块）
   ========================================================================== */
.ai-split {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 0;
  background: #fff; border: 1px solid var(--c-primary-soft-2);
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow);
}
.ai-split__text { padding: 42px 44px; display: flex; flex-direction: column; align-items: flex-start; }
.ai-split__text .eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--c-accent); text-transform: uppercase; margin-bottom: 12px; }
.ai-split__text h3 { font-size: 26px; font-weight: 800; line-height: 1.35; margin-bottom: 14px; letter-spacing: .3px; }
.ai-split__text h3 em { font-style: normal; color: var(--c-primary); }
.ai-split__text > p { font-size: 14.5px; color: var(--c-text-2); line-height: 1.85; margin-bottom: 18px; }
.ai-split__text .pts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; margin-bottom: 22px; }
.ai-split__text .pts li { font-size: 13.5px; color: var(--c-text-2); padding-left: 20px; position: relative; line-height: 1.65; }
.ai-split__text .pts li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 2px; background: var(--c-accent); opacity: .85; }
.ai-split__acts { display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.ai-split__side {
  background: var(--grad-ai); color: #fff; padding: 42px 40px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; justify-content: center; gap: 16px;
}
.ai-split__side::after {
  content: ""; position: absolute; inset: 0; opacity: .18;
  background-image: linear-gradient(rgba(255,255,255,.7) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.7) 1px, transparent 1px);
  background-size: 32px 32px;
}
.ai-split__side .slabel { position: relative; z-index: 2; font-size: 12.5px; font-weight: 700; letter-spacing: 2px; color: rgba(255,255,255,.75); }
.ai-split__side .sysflow { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 10px; }
.ai-split__side .srow { display: flex; align-items: center; gap: 12px; }
.ai-split__side .schip {
  flex: 1; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.24);
  border-radius: 9px; padding: 11px 16px; font-size: 14px; font-weight: 600; backdrop-filter: blur(4px);
  display: flex; align-items: center; gap: 9px;
}
.ai-split__side .schip small { font-weight: 400; font-size: 11.5px; opacity: .72; margin-left: auto; }
.ai-split__side .slink {
  flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(255,255,255,.18); font-size: 15px;
}
.ai-split__side .snote { position: relative; z-index: 2; font-size: 12.5px; color: rgba(255,255,255,.72); line-height: 1.7; }
.ai-grid--2 { grid-template-columns: repeat(2, 1fr); }

/* 集成芯片行 */
.int-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 20px; }
.int-chips span {
  font-size: 13px; font-weight: 600; color: var(--c-primary-dark);
  background: var(--c-primary-soft); border: 1px solid var(--c-primary-soft-2);
  padding: 6px 14px; border-radius: 8px;
}
.int-chips span i { font-style: normal; color: var(--c-text-3); font-weight: 400; }

@media (max-width: 900px) {
  .ai-split { grid-template-columns: 1fr; }
  .ai-split__text { padding: 30px 26px; }
  .ai-split__side { padding: 30px 26px; }
  .ai-grid--2 { grid-template-columns: 1fr; }
  .ai-split__text .pts { grid-template-columns: 1fr; }
}

/* ---------- 六大核心方案大方块 ---------- */
.sol-card.is-feature .visual { height: 190px; }
.sol-card.is-feature .visual .vt .ico {
  font-size: 15px; font-weight: 800; letter-spacing: 1.5px;
  border: 1px solid rgba(255, 255, 255, .5); border-radius: 100px;
  padding: 4px 15px; display: inline-block; margin-bottom: 12px;
}
.sol-card.is-feature .visual .vt b { font-size: 21px; }
.sol-card.is-feature .body h3 { font-size: 20px; }
.sol-card.is-feature .body p { font-size: 14.5px; line-height: 1.85; }
.sol-card.is-feature:hover { border-color: var(--c-primary-light); }

/* ---------- 其他方案小方块 ---------- */
.mini-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.mini-card {
  display: block; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 20px 20px; transition: all .28s var(--ease); position: relative;
}
.mini-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad-ai); border-radius: var(--radius) 0 0 var(--radius);
  transform: scaleY(0); transform-origin: top; transition: transform .3s var(--ease);
}
.mini-card:hover { border-color: var(--c-primary-soft-2); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.mini-card:hover::before { transform: scaleY(1); }
.mini-card b { display: block; font-size: 15px; font-weight: 700; color: var(--c-text); margin-bottom: 7px; }
.mini-card:hover b { color: var(--c-primary); }
.mini-card span { display: block; font-size: 13px; color: var(--c-text-2); line-height: 1.7; }

@media (max-width: 1100px) {
  .mini-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .mini-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-card.is-feature .visual .vt b { font-size: 19px; }
}
@media (max-width: 560px) {
  .mini-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   滚动出现动画
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .nav > li > a { padding: 10px 11px; font-size: 14.5px; }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .svc-grid { grid-template-columns: repeat(3, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .sol-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 40px; }
  .footer .fgrid { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 900px) {
  .nav, .header-cta .btn { display: none; }
  .burger { display: flex; }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; padding-top: 52px; padding-bottom: 52px; }
  .hero { min-height: 0; }
  .hero h1 { font-size: 34px; }
  .hero__lead { font-size: 15.5px; }
  .hero__stats .wrap { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .hero__stats .st:nth-child(2) { border-right: 0; }
  .flowbar { grid-template-columns: repeat(2, 1fr); }
  .flowbar .fb::after { display: none; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .process::before { display: none; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .article-layout { grid-template-columns: 1fr; }
  .aside { position: static; }
  .section { padding: 62px 0; }
}

@media (max-width: 680px) {
  .wrap { padding: 0 18px; }
  .topbar .tb-right span.hide-sm { display: none; }
  .sec-head h2 { font-size: 25px; }
  .sec-head { margin-bottom: 38px; }
  .ai-grid, .svc-grid, .sol-grid, .sol-grid--3, .news-grid, .feat-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 27px; }
  .hero__badge { font-size: 12px; padding: 0 12px; }
  .hero__actions .btn { flex: 1; min-width: 140px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .cta-strip { padding: 28px 24px; }
  .footer .fgrid { grid-template-columns: 1fr; }
  .pagehead h1 { font-size: 26px; }
  .article h2 { font-size: 18.5px; }
  .article table { font-size: 13px; }
  .article table th, .article table td { padding: 9px 10px; }
  .floatbar { right: 12px; bottom: 18px; gap: 8px; }
  .floatbar a, .floatbar button { width: 43px; height: 43px; }
  .floatbar .fb-tip { display: none; }
  .contact-grid h2 { font-size: 25px; }
  .form-card { padding: 24px; }
  .flowbar { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
}