/* ============================================================
   琪琪智码官网 · 设计系统 main.css  v0.2
   v0.2 视觉修订：依据甲方 QiCode Logo 重定色彩体系——
   品牌蓝 #2653EB → 科技青 #2BC6F9 渐变为主视觉，弃用琥珀色；
   整体更轻、更透气：浅色 Hero、渐变点缀、软阴影、大圆角。
   命名：.c- 组件 / .s- 区块 / .u- 工具 / .rv 滚动显现
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root{
  --ink:#0E1B33;
  --navy:#0B1B36;
  --blue:#2653EB;
  --blue-deep:#1E45C9;
  --cyan:#2BC6F9;
  --grad:linear-gradient(118deg,#2653EB 0%,#12A5F2 58%,#2BC6F9 100%);
  --tint:#EEF5FF;
  --bg:#F6F9FE;
  --card:#FFFFFF;
  --line:#E4EBF6;
  --line-dk:#CBD8EC;
  --text:#42526B;
  --muted:#6B7A93;

  --r-s:8px; --r-m:12px; --r-l:18px;
  --sh-s:0 1px 2px rgba(13,38,76,.05);
  --sh-m:0 10px 30px -12px rgba(13,38,76,.14);
  --sh-l:0 24px 48px -16px rgba(13,38,76,.18);
  --sh-btn:0 8px 18px -8px rgba(18,120,236,.55);

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"Cascadia Code",Consolas,"JetBrains Mono","Courier New",monospace;

  --nav-h:68px;
  --sec-y:108px;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  font-family:var(--font);
  font-size:16px;line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;vertical-align:middle}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
strong{color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}

.u-container{max-width:1152px;margin:0 auto;padding:0 24px}
.u-skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.u-skip:focus{left:0}
.u-grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 滚动显现 ---------- */
html.js .rv{opacity:0;transform:translateY(14px);transition:opacity .55s cubic-bezier(.2,.6,.2,1),transform .55s cubic-bezier(.2,.6,.2,1)}
html.js .rv.is-in{opacity:1;transform:none}
html.js .rv-grid>*{opacity:0;transform:translateY(14px);transition:opacity .55s cubic-bezier(.2,.6,.2,1),transform .55s cubic-bezier(.2,.6,.2,1)}
html.js .rv-grid.is-in>*{opacity:1;transform:none}
html.js .rv-grid.is-in>*:nth-child(2){transition-delay:70ms}
html.js .rv-grid.is-in>*:nth-child(3){transition-delay:140ms}
html.js .rv-grid.is-in>*:nth-child(4){transition-delay:210ms}
html.js .rv-grid.is-in>*:nth-child(5){transition-delay:280ms}
html.js .rv-grid.is-in>*:nth-child(6){transition-delay:350ms}
@media (prefers-reduced-motion:reduce){
  html.js .rv,html.js .rv-grid>*{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- 按钮 ---------- */
.c-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:12px;border:0;
  font-family:var(--font);font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;white-space:nowrap;text-decoration:none!important;
  -webkit-tap-highlight-color:transparent;
  transition:filter .16s ease,background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.c-btn:focus{outline:none}
.c-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.c-btn--lg{height:54px;padding:0 32px;font-size:16px;border-radius:14px}
.c-btn--sm{height:38px;padding:0 18px;font-size:13.5px;border-radius:10px}
.c-btn--pri{background:var(--grad);color:#fff;box-shadow:var(--sh-btn)}
.c-btn--pri:hover{filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(18,120,236,.65)}
.c-btn--sec{background:#fff;color:var(--ink);border:1px solid var(--line-dk);box-shadow:var(--sh-s)}
.c-btn--sec:hover{border-color:var(--blue);color:var(--blue)}
.c-btn--ghost{color:var(--blue);padding:0 6px;height:auto;font-weight:600}
.c-btn--ghost:hover{gap:12px}
.c-btn--inv{background:#fff;color:var(--navy)}
.c-btn--inv:hover{transform:translateY(-1px);box-shadow:0 10px 24px -10px rgba(0,0,0,.45)}
.c-btn--line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.38)}
.c-btn--line:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.c-btn:active{transform:translateY(0)}

/* ---------- 导航 ---------- */
.c-nav{
  position:sticky;top:0;z-index:100;height:var(--nav-h);
  background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(20,60,140,.07);
  transition:box-shadow .2s ease;
}
.c-nav.is-scrolled{box-shadow:var(--sh-s)}
.c-nav__in{display:flex;align-items:center;justify-content:space-between;height:100%}
.c-logo{display:flex;align-items:center;gap:11px;font-size:18.5px;font-weight:800;color:var(--ink);letter-spacing:.03em;text-decoration:none!important}
.c-logo small{
  display:block;font-size:10.5px;font-weight:700;letter-spacing:.18em;line-height:1;margin-top:3px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.c-nav__menu{display:flex;align-items:center;gap:28px;list-style:none}
.c-nav__menu>li{position:relative}
/* :not(.c-btn) 避免覆盖导航内的按钮文字色与字重 */
.c-nav__menu a:not(.c-btn){color:var(--text);font-size:14.5px;font-weight:500;text-decoration:none!important}
.c-nav__menu a:not(.c-btn):hover{color:var(--blue)}
.c-nav__menu a:not(.c-btn)[aria-current="page"]{color:var(--blue);font-weight:700}
.c-nav__menu .c-btn--pri{color:#fff;font-weight:700;letter-spacing:.02em}
.c-drop{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%);
  width:580px;padding:14px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--sh-l);
  display:grid;grid-template-columns:1fr 1fr;gap:4px;
  opacity:0;visibility:hidden;translate:0 6px;
  transition:opacity .18s ease,translate .18s ease,visibility .18s;
}
.c-nav__menu li:hover>.c-drop,.c-nav__menu li:focus-within>.c-drop{opacity:1;visibility:visible;translate:0 0}
.c-drop::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.c-drop a{display:flex;gap:10px;align-items:baseline;padding:11px 13px;border-radius:10px;font-size:14px}
.c-drop a:hover{background:var(--tint);color:var(--ink)}
.c-drop b{font-family:var(--mono);font-size:11.5px;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.c-drop span span{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:1px}
.c-nav__burger{display:none;width:44px;height:44px;border:none;background:none;cursor:pointer;position:relative}
.c-nav__burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.c-nav__burger span:nth-child(1){top:15px}
.c-nav__burger span:nth-child(2){top:21px}
.c-nav__burger span:nth-child(3){top:27px}
body.drawer-open .c-nav__burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.drawer-open .c-nav__burger span:nth-child(2){opacity:0}
body.drawer-open .c-nav__burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.c-drawer{display:none;position:fixed;inset:var(--nav-h) 0 0 0;z-index:99;background:#fff;overflow-y:auto;padding:12px 24px 32px}
body.drawer-open .c-drawer{display:block}
body.drawer-open{overflow:hidden}
.c-drawer__group{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--muted);margin:22px 0 4px}
.c-drawer a:not(.c-btn){display:flex;align-items:center;min-height:52px;padding:6px 2px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px;font-weight:500;text-decoration:none!important}
.c-drawer a small{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--muted)}
.c-drawer .c-btn{margin-top:24px;width:100%}
.c-drawer .c-btn--pri{color:#fff;font-weight:700}

/* ---------- 区块骨架与章节头 ---------- */
.s-sec{padding:var(--sec-y) 0}
.s-sec--tight{padding:calc(var(--sec-y) - 28px) 0}
.c-head{max-width:680px;margin-bottom:52px}
.c-head--center{margin-left:auto;margin-right:auto;text-align:center}
.c-eyebrow{font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--blue);text-transform:uppercase}
.c-eyebrow b{
  font-family:var(--mono);font-weight:700;margin-right:10px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.c-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.32;color:var(--ink);font-weight:800;letter-spacing:.005em;margin-top:14px}
.c-head p{color:var(--muted);margin-top:14px;font-size:16.5px}

/* ---------- Hero（浅色 · 渐变光晕 · 玻璃标签） ---------- */
.s-hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(640px 420px at 88% 8%,rgba(43,198,249,.20),transparent 62%),
    radial-gradient(760px 520px at -8% 96%,rgba(38,83,235,.13),transparent 62%),
    linear-gradient(180deg,#F8FBFF 0%,#EFF5FD 100%);
  padding:104px 0 168px;
}
.s-hero__grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.s-hero__in{position:relative;max-width:640px;z-index:1}
.s-hero__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.s-hero__tags span{font-size:12.5px;font-weight:500;color:var(--blue-deep);background:rgba(255,255,255,.78);border:1px solid #D6E4FA;border-radius:999px;padding:4px 13px;white-space:nowrap}
/* Hero 产品驾驶舱视觉 */
.s-hero__vis{position:relative;min-height:440px;z-index:1}
.s-hero__vis::before{content:"";position:absolute;inset:6% 2% 8% 4%;background:radial-gradient(62% 62% at 58% 42%,rgba(43,198,249,.26),transparent 72%);filter:blur(8px)}
.h-card{position:absolute;background:#fff;border:1px solid rgba(214,228,250,.95);border-radius:18px;box-shadow:var(--sh-l)}
.h-card--main{right:5%;top:52px;width:min(400px,94%);padding:20px 22px 22px}
.h-card__head{display:flex;align-items:center;gap:6px;padding-bottom:13px;border-bottom:1px solid var(--line);margin-bottom:16px}
.h-card__head b{margin-left:8px;font-size:13px;color:var(--ink);font-weight:700}
.h-card__head em{margin-left:auto;font-style:normal;font-size:11px;color:#fff;background:var(--grad);border-radius:999px;padding:2px 10px}
.h-dot{width:9px;height:9px;border-radius:50%;background:#E2EAF6}
.h-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.h-stats small{display:block;font-size:11px;color:var(--muted)}
.h-stats b{display:block;font-size:19px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;margin-top:2px}
.h-stats i{display:block;font-style:normal;font-size:11px;color:#0E9F6E;font-weight:600;margin-top:1px}
.h-bars{display:flex;align-items:flex-end;gap:6px;height:76px;margin-bottom:16px}
.h-bars i{flex:1;height:var(--h,40%);border-radius:5px 5px 3px 3px;background:linear-gradient(180deg,#CBDEFB,#A3C6F8)}
.h-bars i.hi{background:var(--grad)}
.h-chips{display:flex;flex-wrap:wrap;gap:6px}
.h-chips span{font-size:11px;color:var(--blue-deep);background:var(--tint);border-radius:999px;padding:2px 10px}
.h-card--edi{right:0;top:-8px;padding:14px 17px;transform:rotate(2deg)}
.h-card--edi b{display:block;font-size:12.5px;color:var(--ink)}
.h-card--edi .ok{display:inline-block;font-size:12px;color:#0E9F6E;font-weight:700;margin-top:4px}
.h-card--edi code{display:block;font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:6px}
.h-card--ai{left:0;bottom:10px;width:232px;padding:16px 18px;transform:rotate(-2.5deg)}
.h-card--ai b{font-size:12.5px;color:var(--ink)}
.h-card--ai p{font-size:12px;color:var(--muted);margin:6px 0 9px}
.h-card--ai p em{font-style:normal;font-weight:800;font-size:19px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.h-card--ai .tagup{font-size:11px;color:#fff;background:var(--grad);border-radius:999px;padding:2px 11px}
.s-hero .c-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;box-shadow:var(--sh-s);
  font-size:12.5px;letter-spacing:.14em;color:var(--ink);
}
.s-hero .c-eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad);flex:none}
.s-hero h1{font-size:clamp(32px,4.8vw,54px);line-height:1.24;color:var(--ink);font-weight:800;letter-spacing:.005em;margin:24px 0 0}
.s-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.s-hero__lede{color:var(--muted);margin-top:18px;max-width:42em;font-size:17px}
.s-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.s-hero__trust{font-size:13.5px;color:var(--muted);margin-top:26px}

/* ---------- 指标条 ---------- */
.s-metrics{margin-top:-64px;position:relative;z-index:2}
.c-metrics{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--sh-m);overflow:hidden;
}
.c-metrics__m{position:relative;display:flex;align-items:center;gap:16px;padding:30px 28px}
.c-metrics__m + .c-metrics__m::before{content:"";position:absolute;left:0;top:28%;bottom:28%;width:1px;background:var(--line)}
.c-metrics__ico{
  flex:none;width:44px;height:44px;border-radius:13px;
  background:var(--tint);border:1px solid #DCE9FB;
  display:flex;align-items:center;justify-content:center;
}
.c-metrics__ico svg{stroke:var(--blue)}
.c-metrics__v{min-width:0}
.c-metrics__m b{display:flex;align-items:baseline;gap:2px;font-size:38px;font-weight:800;line-height:1;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.c-metrics__m b span{font-size:inherit}
.c-metrics__m b i{font-style:normal;font-weight:700;font-size:20px;color:var(--cyan);align-self:flex-start;margin-top:2px}
.c-metrics__t{display:block;font-size:13.5px;color:var(--muted);margin-top:7px;white-space:nowrap}

/* ---------- 卡片 ---------- */
.u-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.u-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.c-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:30px 28px;box-shadow:var(--sh-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.c-card:hover{transform:translateY(-4px);box-shadow:var(--sh-l);border-color:#BFD4F2}
.c-card__no{position:absolute;top:24px;right:26px;font-family:var(--mono);font-size:12px;font-weight:700;color:#C9D7EE}
.c-ico{
  width:48px;height:48px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  box-shadow:0 8px 16px -8px rgba(18,120,236,.55);
}
.c-ico svg{stroke:#fff}
.c-card h3{font-size:17.5px;color:var(--ink);font-weight:700;margin-bottom:8px}
.c-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:14px}
.c-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.c-tag{font-size:12px;color:var(--blue);background:var(--tint);border:1px solid #D9E8FD;border-radius:999px;padding:2px 11px;white-space:nowrap}

/* ---------- AI 智能运营 · 特色横卡 ---------- */
.c-feature{
  margin-top:22px;position:relative;overflow:hidden;border-radius:22px;color:#A9BDDC;
  background:
    radial-gradient(520px 300px at 92% -20%,rgba(43,198,249,.30),transparent 60%),
    radial-gradient(420px 280px at 0% 120%,rgba(38,83,235,.35),transparent 60%),
    linear-gradient(135deg,#0B1B36,#13294F);
  display:grid;grid-template-columns:1fr 1.35fr;gap:30px;padding:38px 40px;
}
.c-feature .c-card__no{color:rgba(255,255,255,.30)}
.c-feature h3{font-size:21px;color:#fff;font-weight:800;margin-bottom:10px}
.c-feature__intro p{font-size:14px;line-height:1.85;margin-bottom:18px}
.c-feature .c-btn--ghost{color:#7FC4F8}
.c-feature__list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px;align-content:center}
.c-feature__list li{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:14px 17px}
.c-feature__list b{display:flex;align-items:center;gap:9px;font-size:14px;color:#fff;margin-bottom:4px}
.c-feature__list b::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--grad);flex:none}
.c-feature__list span{font-size:12.5px;color:#8FA3C4;line-height:1.7}

/* ---------- 对比表 ---------- */
.c-compare-wrap{border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:#fff;box-shadow:var(--sh-s)}
.c-compare{width:100%;border-collapse:collapse;font-size:14px}
.c-compare th{background:#F3F8FF;color:var(--ink);font-weight:700;text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
.c-compare th.is-us{background:linear-gradient(90deg,#E9F2FF,#E6F7FE);color:var(--blue-deep)}
.c-compare td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.c-compare tr:last-child td{border-bottom:none}
.c-compare td.is-us{background:linear-gradient(90deg,#F2F8FF,#F0FBFF);color:var(--blue-deep);font-weight:500}
.c-compare td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}

/* ---------- 交付时间轴 ---------- */
.c-steps{display:grid;grid-template-columns:repeat(5,1fr);margin-top:8px}
.c-step{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;padding:0 18px}
.c-step:not(:last-child)::after{
  content:"";position:absolute;top:21px;left:calc(50% + 30px);width:calc(100% - 60px);height:2px;
  border-radius:2px;background:linear-gradient(90deg,#A9C9F7,#2BC6F9);
}
.c-step__dot{
  width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  font-family:var(--mono);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  border:3px solid #fff;box-shadow:0 0 0 1px var(--line),0 8px 16px -8px rgba(18,120,236,.6);
}
.c-step h3{font-size:15.5px;color:var(--ink);font-weight:700;margin:14px 0 4px}
.c-step p{font-size:13px;color:var(--muted);line-height:1.75;max-width:24em}
.c-steps__note{margin-top:32px;font-size:13.5px;color:var(--muted);border-left:3px solid var(--cyan);padding-left:14px}

/* ---------- 案例卡 ---------- */
.c-case{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:28px 26px;box-shadow:var(--sh-s);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.c-case:hover{transform:translateY(-4px);box-shadow:var(--sh-l);border-color:#BFD4F2}
.c-case__ind{display:inline-block;font-size:12px;color:var(--blue);background:var(--tint);border-radius:999px;padding:2px 11px;margin-bottom:12px}
.c-case h3{font-size:16.5px;color:var(--ink);font-weight:700;margin-bottom:6px}
.c-case p{font-size:13.5px;color:var(--muted);line-height:1.75}
.c-case__num{
  font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;margin-top:14px;line-height:1.2;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.c-case__num small{display:block;font-size:12.5px;color:var(--muted);font-weight:500;margin-top:3px;-webkit-text-fill-color:var(--muted)}
.s-cases__note{margin-top:20px;font-size:12.5px;color:var(--muted)}

/* ---------- 生态能力墙 ---------- */
.c-chips{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:11px}
.c-chips span{font-size:13px;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 15px;white-space:nowrap;box-shadow:var(--sh-s)}
.c-chips .hd{background:var(--grad);color:#fff;border-color:transparent;font-weight:600}
.s-eco__note{font-size:12.5px;color:var(--muted);margin-top:16px}

/* ---------- FAQ ---------- */
.c-faq{max-width:780px;margin:0 auto}
.c-faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 24px;margin:12px 0;box-shadow:var(--sh-s)}
.c-faq details[open]{border-color:#BFD4F2}
.c-faq summary{font-size:15.5px;font-weight:600;color:var(--ink);padding:15px 30px 15px 0;cursor:pointer;list-style:none;position:relative}
.c-faq summary::-webkit-details-marker{display:none}
.c-faq summary::after{content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);color:var(--blue);font-size:21px;font-weight:400}
.c-faq details[open] summary::after{content:"\2212"}
.c-faq .a{padding:0 0 18px;color:var(--muted);font-size:14.5px}

/* ---------- CTA 横幅 ---------- */
.s-cta{padding-bottom:var(--sec-y)}
.c-cta{
  position:relative;overflow:hidden;border-radius:24px;
  background:
    radial-gradient(500px 300px at 88% -10%,rgba(43,198,249,.28),transparent 60%),
    radial-gradient(420px 300px at 8% 110%,rgba(38,83,235,.30),transparent 60%),
    linear-gradient(135deg,#0B1B36,#132C5A);
  padding:52px 54px;color:#A9BDDC;
}
.c-cta__art{position:absolute;right:-30px;top:0;opacity:.55;pointer-events:none}
.c-cta h2{font-size:clamp(22px,2.6vw,28px);color:#fff;font-weight:800;margin-bottom:10px}
.c-cta p{max-width:37em;margin-bottom:26px}
.c-cta__btns{display:flex;gap:14px;flex-wrap:wrap;position:relative}
.c-cta .c-btn--pri{box-shadow:0 10px 26px -8px rgba(43,198,249,.5)}

/* ---------- 页脚 ---------- */
.c-footer{background:var(--navy);color:#8FA3C4;font-size:13.5px}
.c-footer__cols{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:30px;padding:56px 0 42px}
.c-footer h2{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
.c-footer a{display:block;color:#8FA3C4;margin:8px 0;text-decoration:none!important}
.c-footer a:hover{color:#fff}
.c-footer .c-logo span{color:#fff}
.c-footer__slogan{margin-top:14px;font-size:13px;line-height:1.85}
.c-footer__qr{width:100px;height:100px;border-radius:12px;background:#fff;padding:5px;margin-top:10px;display:block}
.c-footer__qrtip{display:block;font-size:11.5px;color:#6B80A4;margin-top:8px}
.c-footer__base{
  border-top:1px solid rgba(255,255,255,.10);padding:18px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#6B80A4;
}
.c-footer__base a{display:inline;margin:0;color:#6B80A4}
.c-footer__base a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .u-grid3{grid-template-columns:1fr 1fr}
  .u-grid4{grid-template-columns:1fr 1fr}
  .c-metrics{grid-template-columns:1fr 1fr}
  .c-metrics__m:nth-child(3)::before{display:none}
  .c-metrics__m:nth-child(n+3){border-top:1px solid var(--line)}
  .c-footer__cols{grid-template-columns:1fr 1fr}
  .s-hero__grid{grid-template-columns:1fr}
  .s-hero__vis{display:none}
  .c-feature{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--sec-y:72px}
  .u-container{padding:0 20px}
  .c-nav__menu{display:none}
  .c-nav__burger{display:block}
  .s-hero{padding:64px 0 128px}
  .s-hero__cta .c-btn{flex:1 1 100%}
  .c-feature{padding:28px 24px;border-radius:18px}
  .c-feature__list{grid-template-columns:1fr}
  .s-metrics{margin-top:-56px}
  .u-grid3,.u-grid4{grid-template-columns:1fr}
  .c-metrics__m{padding:20px 16px;gap:12px}
  .c-metrics__m b{font-size:27px}
  .c-metrics__m b i{font-size:15px}
  .c-metrics__ico{width:36px;height:36px;border-radius:11px}
  .c-metrics__ico svg{width:18px;height:18px}
  .c-metrics__t{font-size:12.5px;margin-top:5px;white-space:normal}
  .c-compare-wrap{border:none;background:none;box-shadow:none;overflow:visible}
  .c-compare,.c-compare tbody,.c-compare tr,.c-compare td{display:block;width:100%}
  .c-compare thead{display:none}
  .c-compare tr{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:14px;background:#fff;box-shadow:var(--sh-s)}
  .c-compare td{border:none;border-bottom:1px solid var(--line);padding:11px 16px}
  .c-compare td:last-child{border-bottom:none}
  .c-compare td::before{content:attr(data-th);display:block;font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:2px}
  .c-compare td:first-child{background:#F3F8FF;font-size:14.5px}
  .c-compare td:first-child::before{display:none}
  .c-steps{grid-template-columns:1fr;gap:26px}
  .c-step{display:grid;grid-template-columns:44px 1fr;column-gap:14px;align-items:start;text-align:left;padding:0}
  .c-step__dot{grid-row:1 / span 2}
  .c-step h3{grid-column:2;margin:9px 0 4px}
  .c-step p{grid-column:2;max-width:none}
  .c-step:not(:last-child)::after{top:52px;left:21px;bottom:-22px;width:2px;height:auto;background:linear-gradient(180deg,#A9C9F7,#2BC6F9)}
  .c-cta{padding:34px 26px;border-radius:18px}
  .c-cta__btns .c-btn{flex:1 1 100%}
  .c-footer__cols{grid-template-columns:1fr;gap:24px;padding:42px 0 30px}
  .c-footer__base{flex-direction:column;align-items:flex-start;gap:6px}
}

/* ---------- 内页组件 ---------- */
.s-page{
  background:
    radial-gradient(520px 300px at 90% 0%,rgba(43,198,249,.14),transparent 62%),
    linear-gradient(180deg,#F8FBFF,#EFF5FD);
  padding:64px 0 58px;border-bottom:1px solid var(--line);
}
.c-crumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.c-crumb a{color:var(--muted)}
.c-crumb a:hover{color:var(--blue);text-decoration:none}
.c-crumb b{color:var(--ink);font-weight:600}
.s-page h1{font-size:clamp(28px,3.8vw,42px);color:var(--ink);font-weight:800;line-height:1.3;letter-spacing:.005em}
.s-page .lede{color:var(--muted);margin-top:14px;max-width:46em;font-size:16.5px}
.s-page__cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.c-pain{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;list-style:none}
.c-pain li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-size:13.5px;color:var(--muted);line-height:1.75;box-shadow:var(--sh-s)}
.c-pain b{display:block;color:var(--ink);font-size:15px;margin-bottom:4px}
.c-caps{display:grid;grid-template-columns:1fr 1fr;gap:14px;list-style:none}
.c-caps li{display:flex;gap:13px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 19px;box-shadow:var(--sh-s)}
.c-caps li::before{content:"";width:8px;height:8px;border-radius:3px;background:var(--grad);flex:none;margin-top:9px}
.c-caps b{display:block;font-size:15px;color:var(--ink)}
.c-caps span{font-size:13px;color:var(--muted);line-height:1.7}
.c-steps--4{grid-template-columns:repeat(4,1fr)}
.s-contact{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.c-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:var(--sh-s)}
.c-form label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin:16px 0 6px}
.c-form label:first-child{margin-top:0}
.c-form input,.c-form select,.c-form textarea{width:100%;height:48px;border:1px solid var(--line-dk);border-radius:10px;padding:0 14px;font-family:var(--font);font-size:14.5px;color:var(--ink);background:#fff;outline:none;transition:border-color .15s,box-shadow .15s}
.c-form textarea{height:130px;padding:12px 14px;resize:vertical}
.c-form input:focus,.c-form select:focus,.c-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(38,83,235,.14)}
.c-form .c-btn{margin-top:22px}
.c-touch p{font-size:14px;color:var(--muted);margin:8px 0}
.c-touch b{color:var(--ink)}
.c-touch .qr{width:118px;height:118px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:6px;margin:12px 0;display:block}
.s-404{text-align:center;padding:110px 0 130px}
.s-404 b{display:block;font-family:var(--mono);font-size:clamp(72px,12vw,120px);font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.s-404 p{color:var(--muted);margin:16px 0 28px}
.u-grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:1023px){
  .c-pain{grid-template-columns:1fr}
  .c-caps{grid-template-columns:1fr}
  .s-contact{grid-template-columns:1fr}
  .u-grid2{grid-template-columns:1fr}
}
@media (max-width:767px){
  .c-steps--4{grid-template-columns:1fr}
}

/* ---------- 打印 ---------- */
@media print{
  .c-nav,.c-drawer,.s-cta,.c-footer__qr{display:none}
  body{background:#fff}
}