/* ============================================================
   知芽成长 · ToB 官网设计系统
   母婴一体化 AI 数字化 SaaS
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  /* 品牌绿（青绿系，取自APP） */
  --green-900:#0c4a38;
  --green-800:#0f6049;
  --green-700:#127a5c;
  --green-600:#15936f;
  --green-500:#1fae82;
  --green-400:#4fc49d;
  --green-300:#86d9bd;
  --green-100:#dff5ec;
  --green-50:#f0faf6;
  --mint:#e9f8f2;
  /* 蓝绿（用于渐变层次） */
  --teal-800:#155e6b;
  --teal-700:#0e7490;
  --teal-600:#0891b2;
  --teal-500:#14b8c9;

  /* 四色卡通字 */
  --c-zhi:#3d8bfd;   /* 知-蓝 */
  --c-ya:#7cc33a;    /* 芽-嫩绿 */
  --c-cheng:#ff9326; /* 成-暖橙 */
  --c-chang:#c061e8; /* 长-粉紫 */

  /* 中性 */
  --ink-900:#0f1c17;
  --ink-800:#1c2b25;
  --ink-700:#33443d;
  --ink-600:#4c5f57;
  --ink-500:#6a7c74;
  --ink-400:#90a099;
  --line:#e4ece8;
  --bg:#ffffff;
  --bg-soft:#f6faf8;

  /* 辅助色 */
  --blue:#2f7ff0;
  --orange:#ff8a26;
  --pink:#ef5da8;
  --amber:#f5b52a;
  --red:#ef5b5b;

  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --radius-xl:32px;

  --shadow-sm:0 2px 10px rgba(16,80,60,.06);
  --shadow:0 10px 30px rgba(16,80,60,.10);
  --shadow-lg:0 24px 60px rgba(16,80,60,.16);
  --shadow-green:0 14px 34px rgba(21,147,111,.28);

  --grad:linear-gradient(135deg,#1fae82 0%,#12805c 100%);
  --grad-soft:linear-gradient(135deg,#eafaf3 0%,#dcf3ec 100%);
  --grad-text:linear-gradient(100deg,#15936f,#1fae82 55%,#3d8bfd);

  --container:1200px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

/* ---------- 重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--ink-700);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--green-700);text-decoration:none;transition:.25s}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
h1,h2,h3,h4,h5{color:var(--ink-900);line-height:1.25;font-weight:700}

/* ---------- 布局容器 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section-sm{padding:64px 0}
.bg-soft{background:var(--bg-soft)}
.bg-mint{background:linear-gradient(180deg,#f2faf6,#e9f7f1)}
.text-center{text-align:center}

/* ---------- 章节标题 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--green-700);background:var(--green-100);
  padding:7px 16px;border-radius:999px;margin-bottom:20px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green-500)}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-head.left{text-align:left;margin-left:0}
.section-title{font-size:clamp(28px,3.6vw,40px);font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.section-title .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{font-size:17px;color:var(--ink-500);line-height:1.85}

/* ---------- 四色卡通字 ---------- */
.brand-cute{
  font-family:"ZCOOL KuaiLe","Noto Sans SC",sans-serif;
  font-weight:400;white-space:nowrap;line-height:1;
}
.brand-cute span{display:inline-block;position:relative}
.brand-cute .z1{color:var(--c-zhi)}
.brand-cute .z2{color:var(--c-ya)}
.brand-cute .z3{color:var(--c-cheng)}
.brand-cute .z4{color:var(--c-chang)}
.brand-cute.bounce span{animation:pop 3.2s ease-in-out infinite}
.brand-cute.bounce .z1{animation-delay:0s}
.brand-cute.bounce .z2{animation-delay:.18s}
.brand-cute.bounce .z3{animation-delay:.36s}
.brand-cute.bounce .z4{animation-delay:.54s}
@keyframes pop{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-7px) rotate(-4deg)}}
.brand-cute.lg{font-size:clamp(40px,6vw,68px)}
.brand-cute.md{font-size:clamp(28px,3.4vw,40px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:16px;font-weight:700;padding:15px 30px;border-radius:999px;
  transition:.28s;white-space:nowrap;cursor:pointer;border:1.5px solid transparent;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-green)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(21,147,111,.38)}
.btn-ghost{background:#fff;color:var(--green-700);border-color:var(--green-300)}
.btn-ghost:hover{background:var(--green-50);border-color:var(--green-500);transform:translateY(-3px)}
.btn-light{background:#fff;color:var(--green-700)}
.btn-light:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.btn-outline-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.2)}
.btn-lg{padding:18px 38px;font-size:17px}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.arrow-link{display:inline-flex;align-items:center;gap:7px;font-weight:700;color:var(--green-700);font-size:15px}
.arrow-link svg{width:16px;height:16px;transition:.25s}
.arrow-link:hover{color:var(--green-500)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  transition:.3s;padding:18px 0;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:11px}
.logo img{width:42px;height:42px;border-radius:12px;box-shadow:var(--shadow-sm)}
.logo .logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo .logo-name{font-family:"ZCOOL KuaiLe",sans-serif;font-size:22px}
.logo .logo-name .z1{color:var(--c-zhi)}.logo .logo-name .z2{color:var(--c-ya)}
.logo .logo-name .z3{color:var(--c-cheng)}.logo .logo-name .z4{color:var(--c-chang)}
.logo .logo-tag{font-size:11px;color:var(--ink-400);letter-spacing:1px}
.nav{display:flex;align-items:center;gap:4px}
.nav>li{position:relative}
.nav>li>a,.nav>li>.nav-toggle{
  display:flex;align-items:center;gap:5px;
  padding:10px 14px;font-size:15px;font-weight:600;color:var(--ink-700);border-radius:10px;
}
.nav>li>a:hover,.nav>li>.nav-toggle:hover{color:var(--green-700);background:var(--green-50)}
.nav>li>a.active{color:var(--green-700)}
.nav .caret{width:13px;height:13px;transition:.25s}
.nav li:hover .caret{transform:rotate(180deg)}
.dropdown{
  position:absolute;top:calc(100% + 8px);left:0;min-width:230px;
  background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);
  padding:10px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;
  border:1px solid var(--line);
}
.nav li:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:flex;flex-direction:column;padding:10px 13px;border-radius:11px}
.dropdown a b{font-size:14.5px;color:var(--ink-800);font-weight:700}
.dropdown a span{font-size:12.5px;color:var(--ink-400)}
.dropdown a:hover{background:var(--green-50)}
.nav-cta{display:flex;align-items:center;gap:12px}
.hamburger{display:none;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center;border-radius:11px}
.hamburger span{width:23px;height:2.5px;background:var(--ink-800);border-radius:3px;transition:.3s}
.topbar.scrolled{background:rgba(255,255,255,.9);backdrop-filter:blur(14px);box-shadow:var(--shadow-sm);padding:11px 0}
.mobile-menu{
  position:fixed;top:0;right:-100%;width:min(340px,88vw);height:100vh;z-index:1100;
  background:#fff;padding:80px 26px 30px;overflow-y:auto;transition:.35s;box-shadow:var(--shadow-lg)}
.mobile-menu.open{right:0}
.mobile-menu a{display:block;padding:13px 4px;font-size:16px;font-weight:600;color:var(--ink-800);border-bottom:1px solid var(--line)}
.mobile-menu .m-sub{padding-left:14px;font-size:14.5px;color:var(--ink-500)}
.mobile-close{position:absolute;top:22px;right:22px;width:42px;height:42px;border-radius:11px;font-size:22px;color:var(--ink-700)}
.menu-overlay{position:fixed;inset:0;background:rgba(10,30,22,.45);z-index:1050;opacity:0;visibility:hidden;transition:.3s}
.menu-overlay.open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{position:relative;padding:168px 0 90px;overflow:hidden;background:linear-gradient(180deg,#f3faf6 0%,#ffffff 78%)}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.hero-bg .b1{width:420px;height:420px;background:#bfeeda;top:-120px;right:-80px}
.hero-bg .b2{width:360px;height:360px;background:#cfe6ff;bottom:-140px;left:-100px}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);
  padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--green-800);
  box-shadow:var(--shadow-sm);margin-bottom:26px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green-500);box-shadow:0 0 0 4px var(--green-100)}
.hero h1{font-size:clamp(34px,4.8vw,56px);font-weight:800;letter-spacing:-1px;margin-bottom:24px}
.hero h1 .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-def{font-size:17.5px;color:var(--ink-600);line-height:1.9;margin-bottom:34px;max-width:560px}
.hero-actions{display:flex;gap:15px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:38px;flex-wrap:wrap}
.hero-stats .hs b{display:block;font-size:30px;font-weight:800;color:var(--green-700);line-height:1.1}
.hero-stats .hs span{font-size:13.5px;color:var(--ink-400)}
.hero-visual{position:relative}
.hero-visual .phone{
  border-radius:34px;box-shadow:var(--shadow-lg);border:9px solid #10241c;overflow:hidden;background:#fff}
.hero-visual .float-card{
  position:absolute;background:#fff;border-radius:16px;box-shadow:var(--shadow);
  padding:13px 17px;display:flex;align-items:center;gap:11px;font-size:13.5px;font-weight:600;
}
.hero-visual .fc1{top:34px;left:-34px;animation:floaty 4.5s ease-in-out infinite}
.hero-visual .fc2{bottom:48px;right:-30px;animation:floaty 5s ease-in-out infinite reverse}
.float-ic{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-13px)}}
.hero-visual .float-card small{display:block;font-weight:500;color:var(--ink-400);font-size:11.5px}

/* ---------- 信任条 ---------- */
.trusted{padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.trusted p{text-align:center;font-size:13.5px;color:var(--ink-400);letter-spacing:1px;margin-bottom:22px}
.trusted-row{display:flex;justify-content:center;align-items:center;gap:48px;flex-wrap:wrap}
.trusted-row span{font-size:17px;font-weight:700;color:var(--ink-400);opacity:.85;letter-spacing:.5px}

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

/* ---------- 痛点卡 ---------- */
.pain-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;transition:.3s;position:relative;overflow:hidden;
}
.pain-card::after{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--red);opacity:0;transition:.3s}
.pain-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.pain-card:hover::after{opacity:1}
.pain-ic{width:50px;height:50px;border-radius:14px;background:#fdeeee;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.pain-ic svg{width:25px;height:25px;stroke:var(--red)}
.pain-card h3{font-size:18px;margin-bottom:10px}
.pain-card p{font-size:14.5px;color:var(--ink-500);line-height:1.8}
.pain-card .solve{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--green-700);font-weight:600;display:flex;gap:8px;align-items:flex-start}
.pain-card .solve svg{width:17px;height:17px;flex-shrink:0;margin-top:2px}

/* ---------- 特性卡 ---------- */
.feature-card{
  background:#fff;border-radius:var(--radius);padding:30px 28px;
  border:1px solid var(--line);transition:.3s;height:100%;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.f-ic,.feature-icon{width:52px;height:52px;border-radius:15px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.f-ic svg,.feature-icon svg{width:26px;height:26px;stroke:var(--green-600)}
.pain-icon{width:52px;height:52px;border-radius:15px;background:#fdecec;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.pain-icon svg{width:26px;height:26px;stroke:var(--red)}
.feature-card h3{font-size:18px;margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--ink-500);line-height:1.8}
.feature-card.ai .f-ic{background:linear-gradient(135deg,#e7f0ff,#f0e8ff)}
.feature-card.ai .f-ic svg{stroke:var(--blue)}

/* ---------- 标签 ---------- */
.tags{display:flex;flex-wrap:wrap;gap:9px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;background:var(--green-50);color:var(--green-700)}
.tag.ai{background:#eef4ff;color:var(--blue)}
.tag.hot{background:#fff1e2;color:var(--orange)}

/* ---------- 产品卡 ---------- */
.product-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;transition:.32s;height:100%;
}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.pc-top{padding:28px 28px 0;display:flex;align-items:center;gap:15px;margin-bottom:16px}
.pc-ic{width:54px;height:54px;border-radius:16px;background:var(--grad);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-green)}
.pc-ic svg{width:27px;height:27px;stroke:#fff}
.pc-top h3{font-size:19px}
.pc-top .pc-num{font-size:12px;color:var(--ink-400);font-weight:600;letter-spacing:1px}
.pc-body{padding:0 28px 24px;flex:1}
.pc-body p{font-size:14.5px;color:var(--ink-500);margin-bottom:16px;line-height:1.8}
.pc-list{margin-bottom:8px}
.pc-list li{font-size:13.5px;color:var(--ink-600);padding:4px 0 4px 22px;position:relative}
.pc-list li::before{content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:50%;background:var(--green-400)}
.pc-foot{padding:18px 28px;border-top:1px solid var(--line);background:var(--bg-soft)}

/* ---------- 一体化架构图 ---------- */
.arch{background:linear-gradient(180deg,#0f3a2c,#0c2c22);border-radius:var(--radius-xl);padding:48px 40px;color:#fff;position:relative;overflow:hidden}
.arch::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 0%,rgba(31,174,130,.35),transparent 55%)}
.arch-layer{position:relative;margin-bottom:18px}
.arch-layer .al-label{font-size:12.5px;color:var(--green-300);letter-spacing:2px;margin-bottom:11px;font-weight:700}
.arch-nodes{display:grid;gap:13px}
.arch-node{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:13px;transition:.25s}
.arch-node:hover{background:rgba(31,174,130,.22);border-color:var(--green-400)}
.arch-node .an-ic{width:38px;height:38px;border-radius:11px;background:rgba(31,174,130,.25);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.arch-node .an-ic svg{width:20px;height:20px;stroke:var(--green-300)}
.arch-node b{font-size:14.5px;display:block;color:#fff}
.arch-node span{font-size:12px;color:rgba(255,255,255,.6)}
.arch-bar{position:relative;background:var(--grad);border-radius:14px;padding:18px 22px;text-align:center;font-weight:700;font-size:16px;box-shadow:var(--shadow-green)}
.arch-bar small{display:block;font-weight:500;font-size:12.5px;opacity:.85;margin-top:3px}

/* ---------- 联动流程 ---------- */
.flow-chain{display:flex;align-items:stretch;gap:0;flex-wrap:wrap;justify-content:center}
.flow-step{flex:1;min-width:150px;max-width:210px;text-align:center;position:relative;padding:0 10px}
.flow-step .fs-dot{width:56px;height:56px;border-radius:17px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;background:var(--grad-soft);border:2px solid var(--green-300);font-weight:800;color:var(--green-700);font-size:20px}
.flow-step b{font-size:14.5px;display:block;margin-bottom:5px}
.flow-step span{font-size:12.5px;color:var(--ink-400)}
.flow-step .fs-arrow{position:absolute;top:20px;right:-14px;color:var(--green-300);font-size:22px;z-index:2}

/* ---------- 数据带 ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;background:var(--grad);border-radius:var(--radius-xl);padding:48px 40px;color:#fff;position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.18),transparent 50%)}
.stats-band .st{position:relative;text-align:center}
.stats-band .st b{font-size:clamp(30px,3.4vw,42px);font-weight:800;display:block;line-height:1.1}
.stats-band .st span{font-size:14px;opacity:.9}

/* ---------- 步骤 ---------- */
.steps{counter-reset:step;display:grid;gap:22px}
.step-item{display:flex;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;transition:.3s}
.step-item:hover{box-shadow:var(--shadow);transform:translateX(5px)}
.step-item::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:"ZCOOL KuaiLe",sans-serif;font-size:34px;color:var(--green-300);line-height:1;flex-shrink:0;min-width:54px}
.step-item h3{font-size:17.5px;margin-bottom:7px}
.step-item p{font-size:14.5px;color:var(--ink-500)}

/* ---------- 勾选列表 ---------- */
.check-list li{position:relative;padding:9px 0 9px 34px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line)}
.check-list li:last-child{border-bottom:none}
.check-list li::before{content:"";position:absolute;left:2px;top:11px;width:20px;height:20px;border-radius:50%;background:var(--green-100)}
.check-list li::after{content:"";position:absolute;left:7.5px;top:15px;width:9px;height:5px;border-left:2.5px solid var(--green-600);border-bottom:2.5px solid var(--green-600);transform:rotate(-45deg)}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{position:relative}
.split-media .shot{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.split-media .chip-badge{position:absolute;background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:11px 16px;font-size:13px;font-weight:700;display:flex;gap:9px;align-items:center}
.split-media .chip-badge .cb-ic{width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px}
.split-media .cb1{top:-20px;right:-16px}
.split-media .cb2{bottom:-20px;left:-16px}
.split h2{font-size:clamp(26px,3vw,34px);margin-bottom:18px}
.split .lead{color:var(--ink-500);margin-bottom:24px;font-size:16px}

/* ---------- 对比表 ---------- */
.table-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#fff}
.compare-table{width:100%;border-collapse:collapse;table-layout:fixed}
.compare-table th,.compare-table td{padding:18px 20px;text-align:center;font-size:14.5px;border-bottom:1px solid var(--line)}
.compare-table thead th{background:var(--green-800);color:#fff;font-weight:700}
.compare-table thead th:first-child{background:var(--ink-800)}
.compare-table td:first-child,.compare-table th:first-child{text-align:left;font-weight:700;color:var(--ink-800);background:var(--bg-soft)}
.compare-table .yes{color:var(--green-600);font-weight:800;font-size:18px}
.compare-table .no{color:var(--ink-400);font-size:18px}
.compare-table tbody tr:hover{background:var(--green-50)}
.compare-table tbody tr:last-child td{border-bottom:none}

/* ---------- CTA ---------- */
.cta-band{position:relative;border-radius:var(--radius-xl);background:linear-gradient(125deg,#0f6049,#15936f 60%,#1fae82);padding:64px 48px;color:#fff;text-align:center;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 15% 20%,rgba(255,255,255,.16),transparent 45%),radial-gradient(circle at 90% 90%,rgba(61,139,253,.25),transparent 45%)}
.cta-band>*{position:relative}
.cta-band h2{color:#fff;font-size:clamp(28px,3.4vw,38px);margin-bottom:16px}
.cta-band p{font-size:17px;opacity:.92;margin-bottom:32px;max-width:620px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-400);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--green-600)}
.breadcrumb .sep{color:var(--ink-400)}
.breadcrumb .current{color:var(--green-700);font-weight:600}

/* ---------- 内页头部 ---------- */
.page-hero{padding:150px 0 64px;background:linear-gradient(180deg,#f3faf6,#fff);position:relative;overflow:hidden}
.page-hero .ph-blob{position:absolute;width:380px;height:380px;background:#cdeede;border-radius:50%;filter:blur(70px);top:-160px;right:-80px;opacity:.6}
.page-hero h1{font-size:clamp(32px,4.4vw,50px);font-weight:800;letter-spacing:-.8px;margin-bottom:20px;position:relative}
.page-hero p{font-size:18px;color:var(--ink-500);max-width:720px;line-height:1.9;position:relative}

/* ---------- 产品详情布局 ---------- */
.detail-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start}
.detail-main h2{font-size:26px;margin:44px 0 16px;display:flex;align-items:center;gap:11px}
.detail-main h2 .d-ic{width:38px;height:38px;border-radius:11px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center}
.detail-main h2 .d-ic svg{width:21px;height:21px;stroke:var(--green-600)}
.detail-main p{margin-bottom:16px;color:var(--ink-600)}
.detail-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.side-card h4{font-size:16px;margin-bottom:16px}
.side-card .side-list li{font-size:13.5px;padding:7px 0;border-bottom:1px solid var(--line);color:var(--ink-600);display:flex;gap:8px;align-items:center}
.side-card .side-list li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green-400);flex-shrink:0}
.side-qr{text-align:center}
.side-qr img{width:170px;height:170px;margin:0 auto 12px;border-radius:12px}
.side-qr span{font-size:13px;color:var(--ink-400)}
.detail-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0}
.detail-gallery img{border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.ai-highlight{background:linear-gradient(135deg,#f0f7ff,#f5f0ff);border:1px solid #e0e9fb;border-radius:var(--radius);padding:26px 28px;margin:22px 0}
.ai-highlight h3{font-size:17px;color:var(--blue);margin-bottom:14px;display:flex;gap:9px;align-items:center}
.ai-highlight ul li{font-size:14px;padding:6px 0 6px 26px;position:relative;color:var(--ink-700)}
.ai-highlight ul li::before{content:"";position:absolute;left:2px;top:12px;width:9px;height:9px;border-radius:50%;background:var(--blue);opacity:.6}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:.3s}
.faq-item.open{box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font-size:16px;font-weight:700;color:var(--ink-800);text-align:left}
.faq-q .faq-ic{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--green-100);color:var(--green-700);font-size:18px;display:flex;align-items:center;justify-content:center;transition:.3s}
.faq-item.open .faq-ic{transform:rotate(45deg);background:var(--green-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:.35s}
.faq-a-inner{padding:0 26px 22px;font-size:15px;color:var(--ink-500);line-height:1.85}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow);border:1px solid var(--line)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink-700)}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:12px;
  font-size:15px;font-family:inherit;color:var(--ink-800);background:var(--bg-soft);transition:.25s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--green-500);background:#fff;box-shadow:0 0 0 4px var(--green-100)}
.form-group textarea{resize:vertical;min-height:110px}
.contact-info-card{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.contact-info-card .ci-ic{width:48px;height:48px;border-radius:14px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-info-card .ci-ic svg{width:24px;height:24px;stroke:var(--green-600)}
.contact-info-card b{font-size:16px;display:block;margin-bottom:4px}
.contact-info-card span,.contact-info-card a{font-size:14.5px;color:var(--ink-500)}

/* ---------- 页脚 ---------- */
.footer{background:#0c2119;color:rgba(255,255,255,.7);padding:72px 0 0;position:relative}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer .f-logo{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer .f-logo img{width:46px;height:46px;border-radius:12px}
.footer .f-logo .logo-name{font-family:"ZCOOL KuaiLe",sans-serif;font-size:24px}
.footer .f-logo .z1{color:var(--c-zhi)}.footer .f-logo .z2{color:var(--c-ya)}
.footer .f-logo .z3{color:var(--c-cheng)}.footer .f-logo .z4{color:var(--c-chang)}
.footer-about{font-size:14px;line-height:1.9;margin-bottom:20px}
.footer h5{color:#fff;font-size:15.5px;margin-bottom:20px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62)}
.footer-links a:hover{color:var(--green-400);padding-left:4px}
.footer-contact li{font-size:14px;margin-bottom:13px;display:flex;gap:10px;align-items:flex-start}
.footer-contact svg{width:17px;height:17px;stroke:var(--green-400);flex-shrink:0;margin-top:3px}
.footer-qr{display:flex;gap:16px;margin-top:6px}
.footer-qr .fq{text-align:center}
.footer-qr img{width:96px;height:96px;border-radius:10px;background:#fff;padding:5px}
.footer-qr span{font-size:11.5px;display:block;margin-top:7px;color:rgba(255,255,255,.6)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--green-400)}

/* ---------- 滚动揭示 ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.brand-cute.bounce span{animation:none}}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:60px}
  .hero-visual{max-width:430px;margin:0 auto}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:44px}
  .split.reverse .split-media{order:0}
  .detail-layout{grid-template-columns:1fr}
  .detail-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .nav,.nav-cta .btn{display:none}
  .hamburger{display:flex}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:36px 24px;gap:28px}
  .hero-stats{gap:26px}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:28px 22px}
  .arch{padding:34px 22px}
  .cta-band{padding:48px 26px}
  .detail-side{grid-template-columns:1fr}
  .detail-gallery{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column}
  .flow-step{max-width:none;min-width:50%}
  .flow-step .fs-arrow{display:none}
  .compare-table{font-size:13px}
  .compare-table th,.compare-table td{padding:13px 10px}
}

/* ============================================================
   折叠屏 / 双面屏 / 超小屏 / 超大屏 增强适配
   ============================================================ */
/* 安全区域：刘海、挖孔、曲面边缘、底部手势条 */
body{
  padding-left:env(safe-area-inset-left);
  padding-right:env(safe-area-inset-right);
}
.topbar{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}
.footer{padding-bottom:env(safe-area-inset-bottom)}

/* 超小屏（折叠屏折叠态，如 Galaxy Fold ≈280-340px） */
@media (max-width:360px){
  body{font-size:15px}
  .container{padding:0 16px}
  .hero{padding:132px 0 60px}
  .page-hero{padding:128px 0 52px}
  .section{padding:52px 0}
  .btn{padding:13px 22px;font-size:15px}
  .hero h1{font-size:30px}
  .hero-stats{gap:20px}
  .hero-stats .hs b{font-size:24px}
  .logo .logo-tag{display:none}
  .logo img{width:38px;height:38px}
  .form-card{padding:26px 18px}
}

/* 折叠屏展开 / 双屏跨折痕（Surface Duo、Galaxy Fold 展开态，渐进增强） */
@media (spanning:single-fold-vertical){
  .hero-grid,.split{grid-template-columns:1fr 1fr;column-gap:calc(env(fold-right) - env(fold-left) + 48px)}
}
@media (spanning:single-fold-horizontal){
  .hero{padding-top:120px}
}

/* 平板竖屏细化（769-1024px，保持双列） */
@media (min-width:769px) and (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr)}
}

/* 触摸 / 无精确指针设备：去掉 hover 位移，避免移动端残留 */
@media (hover:none),(pointer:coarse){
  .feature-card:hover,.pain-card:hover,.product-card:hover,
  .btn-primary:hover,.btn-ghost:hover,.step-item:hover{transform:none}
}

/* 超大屏显示器：适度放宽，避免内容过宽 */
@media (min-width:1600px){:root{--container:1280px}}
@media (min-width:2000px){:root{--container:1360px}}

/* 手机横屏（短高度） */
@media (max-height:500px) and (orientation:landscape){
  .hero{padding:118px 0 48px}
  .page-hero{padding:120px 0 44px}
}

/* ============================================================
   系统工作台界面示意（ToB 产品功能可视化）
   ============================================================ */
.mock{border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);background:#fff;margin:20px 0 8px}
.mock-bar{background:#f1f5f3;padding:12px 16px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.mock-bar .dots{display:flex;gap:7px}
.mock-bar .dots i{width:11px;height:11px;border-radius:50%;display:block}
.mock-bar .dots i:nth-child(1){background:#ff5f57}
.mock-bar .dots i:nth-child(2){background:#febc2e}
.mock-bar .dots i:nth-child(3){background:#28c840}
.mock-bar b{margin-left:12px;font-size:13px;color:var(--ink-500);font-weight:600}
.mock-body{display:grid;grid-template-columns:158px 1fr;min-height:308px}
.mock-side{background:#0f3a2c;padding:18px 13px}
.mock-side .ms-item{height:30px;border-radius:8px;margin-bottom:8px;background:rgba(255,255,255,.1)}
.mock-side .ms-item.active{background:var(--green-500)}
.mock-main{padding:20px}
.mock-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.mock-kpi{background:var(--bg-soft);border-radius:11px;padding:13px 14px}
.mock-kpi b{font-size:21px;color:var(--green-700);display:block;line-height:1.2}
.mock-kpi span{font-size:11px;color:var(--ink-400)}
.mock-chart{display:flex;align-items:flex-end;gap:9px;height:104px;background:var(--bg-soft);border-radius:11px;padding:14px 14px 0;margin-bottom:14px}
.mock-chart i{flex:1;background:linear-gradient(180deg,var(--green-400),var(--green-600));border-radius:5px 5px 0 0}
.mock-row{height:34px;background:var(--bg-soft);border-radius:9px;margin-bottom:8px;display:flex;align-items:center;padding:0 14px;font-size:12px;color:var(--ink-500);justify-content:space-between}
.mock-row .pill{background:var(--green-100);color:var(--green-700);padding:2px 11px;border-radius:999px;font-size:11px;font-weight:600}
.mock-side-label{font-size:10px;color:rgba(255,255,255,.4);letter-spacing:1px;margin:6px 0 9px}
@media (max-width:600px){.mock-body{grid-template-columns:1fr}.mock-side{display:none}}