/* 柒鱼AI 官网样式 —— 原生 CSS，无框架、无外部资源（字体/图标/CDN 全不引）
   主题：浅色（国内企业客户习惯）。字体只用系统字体栈，零版权风险、零请求。
   多端适配：手机 / 平板 / 桌面 / 大屏 / 横屏 / 刘海屏
   如需暗色模式：在此文件末尾追加 @media (prefers-color-scheme: dark){:root{…覆盖变量…}} 即可，无需改 HTML。 */

:root{
  /* 底色与层次 */
  --bg:#FFFFFF;
  --bg-2:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#F8FAFD;
  --line:#E4EBF3;
  --line-2:#CFDCEA;
  /* 文字：全部满足 WCAG AA（正文 17.9:1、次要 7:1、弱化 5.0:1，含浅灰底上的弱化文字） */
  --txt:#0F172A;
  --txt-2:#4A5A70;
  --txt-3:#5E6C80;
  /* 品牌色：深色渐变，白字/白底都可读 */
  --cyan:#0E7490;
  --blue:#1D4ED8;
  --violet:#6D28D9;
  --brand:linear-gradient(115deg,#0E7490 0%,#1D4ED8 52%,#6D28D9 100%);
  --wash-c:rgba(14,116,144,.10);
  --wash-v:rgba(109,40,217,.09);
  --grid:rgba(15,23,42,.055);
  --shadow:0 1px 2px rgba(15,23,42,.04),0 10px 26px -20px rgba(15,23,42,.22);
  --shadow-hi:0 2px 4px rgba(15,23,42,.05),0 18px 38px -22px rgba(29,78,216,.35);
  --radius:14px;
  --max:1160px;
  --pad:clamp(16px,4vw,24px);
  --header-h:64px;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);font-family:var(--font);
  font-size:clamp(15.5px,1.6vw,16.5px);line-height:1.75;letter-spacing:.01em;
  /* 页脚吸底：内容不足一屏时页脚仍贴在视口底部 */
  min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;
  background-image:
    radial-gradient(760px 400px at 8% -6%,var(--wash-c),transparent 62%),
    radial-gradient(680px 380px at 92% 2%,var(--wash-v),transparent 64%);
  background-repeat:no-repeat;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--txt);text-decoration:none}
a:hover{color:var(--blue)}
h1,h2,h3{line-height:1.25;margin:0 0 .6em;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(1.75rem,5.4vw,3.15rem);font-weight:700}
h2{font-size:clamp(1.32rem,3.2vw,2.05rem);font-weight:650}
h3{font-size:clamp(1.02rem,1.4vw,1.1rem);font-weight:600}
p{margin:0 0 1em;color:var(--txt-2);text-wrap:pretty}
ul,ol{margin:0 0 1em;padding-left:1.15em}
li{margin:.3em 0;color:var(--txt-2)}
strong{color:var(--txt);font-weight:600}
code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:.1em .4em;border-radius:5px;border:1px solid var(--line)}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding-left:calc(var(--pad) + env(safe-area-inset-left,0px));padding-right:calc(var(--pad) + env(safe-area-inset-right,0px))}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#fff;border:1px solid var(--line-2);padding:8px 14px;border-radius:8px;z-index:99;box-shadow:var(--shadow)}

/* ── 头部 ───────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;padding:10px 0}
.brand-mark{
  width:22px;height:22px;border-radius:7px;background:var(--brand);
  box-shadow:0 4px 12px -3px rgba(29,78,216,.5);position:relative;flex-shrink:0
}
.brand-text{font-weight:700;letter-spacing:.02em;display:flex;align-items:baseline;gap:7px;font-size:1.02rem}
.brand-text em{font-style:normal;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--txt-3);text-transform:uppercase}
.brand-text.lg{font-size:1.2rem;margin-bottom:.5em}
.nav{display:flex;gap:20px;margin-left:auto;font-size:.92rem}
.nav a{color:var(--txt-2);position:relative;padding:6px 0;display:inline-flex;align-items:center;white-space:nowrap}
.nav a:hover{color:var(--blue)}
.nav a.active{color:var(--txt)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--brand)}
.nav-cta{margin-left:4px}
.nav-toggle,.nav-burger{display:none}

/* ── 按钮 ───────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:11px;font-size:.95rem;font-weight:600;min-height:46px;
  border:1px solid transparent;
  transition:transform .16s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -12px rgba(29,78,216,.6)}
.btn-ghost{border-color:var(--line-2);color:var(--txt);background:#fff;box-shadow:var(--shadow)}
.btn-sm{padding:9px 16px;font-size:.88rem;border-radius:9px;min-height:38px}
@media (hover:hover){
  .btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -14px rgba(29,78,216,.7)}
  .btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.cta-row .btn{flex:0 1 auto}

/* ── Hero ───────────────────────────── */
.hero{position:relative;overflow:hidden;padding:clamp(52px,9vw,90px) 0 clamp(44px,7vw,72px);border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),
                   linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(72% 62% at 42% 26%,#000 18%,transparent 80%);
  -webkit-mask-image:radial-gradient(72% 62% at 42% 26%,#000 18%,transparent 80%);
}
.hero::after{
  content:"";position:absolute;width:min(620px,88vw);aspect-ratio:1;right:-12vw;top:-34%;border-radius:50%;
  background:conic-gradient(from 120deg,rgba(14,116,144,.20),rgba(29,78,216,.14),rgba(109,40,217,.20),rgba(14,116,144,.20));
  filter:blur(90px);opacity:.5;pointer-events:none;
}
.hero-inner{position:relative;max-width:800px}
.pill{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.72rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--txt-2);
  border:1px solid var(--line-2);border-radius:999px;padding:7px 14px;margin-bottom:24px;
  background:#fff;box-shadow:var(--shadow);max-width:100%;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);flex-shrink:0}
.hero h1{
  background:linear-gradient(100deg,#0B1B2B 4%,#123A63 38%,#0E7490 68%,#5B21B6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero h1 .hl{background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(1rem,1.4vw,1.09rem);color:var(--txt-2);max-width:660px}

/* ── 版面块 ─────────────────────────── */
.section{padding:clamp(44px,6vw,66px) 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.page-head{padding:clamp(34px,5vw,52px) 0 6px}
.page-head .lede{margin-top:0}
.breadcrumb{font-size:.82rem;color:var(--txt-3);display:flex;gap:10px;padding-top:18px;font-family:var(--mono);flex-wrap:wrap}
.breadcrumb a{color:var(--txt-3)}
.breadcrumb a:hover{color:var(--blue)}

.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2.4vw,24px);box-shadow:var(--shadow);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.card h3{margin-bottom:.45em}
.card p:last-child,.card ul:last-child,.card ol:last-child{margin-bottom:0}
a.card{display:block}
@media (hover:hover){
  a.card:hover{border-color:rgba(29,78,216,.4);transform:translateY(-3px);box-shadow:var(--shadow-hi)}
}
.card-ico{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;color:var(--cyan);
  display:block;margin-bottom:12px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  font-size:.76rem;color:var(--txt-2);border:1px solid var(--line);border-radius:999px;
  padding:5px 12px;background:var(--surface-2);
}
.list-check{list-style:none;padding-left:0}
.list-check li{position:relative;padding-left:24px}
.list-check li::before{
  content:"";position:absolute;left:2px;top:.62em;width:9px;height:9px;border-radius:3px;
  background:var(--brand);
}

/* 步骤 */
.steps{list-style:none;padding:0;display:grid;gap:14px;grid-template-columns:repeat(4,minmax(0,1fr));counter-reset:s}
.steps li{
  counter-increment:s;position:relative;padding:22px 20px 20px;margin:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
}
.steps li::before{
  content:"0" counter(s);font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;
  color:var(--cyan);display:block;margin-bottom:10px;
}
.steps strong{display:block;color:var(--txt);margin-bottom:.3em}

/* 表格：桌面横滚，窄屏转卡片（由 td 的 data-label 驱动） */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);
}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:560px}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--txt-3);font-family:var(--mono);font-weight:500;white-space:nowrap;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
td strong{color:var(--txt)}

/* 素材位 / 提示块 */
.asset-slot{
  margin:26px 0;border:1px dashed rgba(14,116,144,.45);border-radius:var(--radius);
  background:linear-gradient(135deg,rgba(14,116,144,.05),rgba(109,40,217,.05));
  padding:clamp(24px,4vw,34px) clamp(16px,3vw,24px);text-align:center;
}
.asset-slot figcaption{font-family:var(--mono);font-size:.78rem;color:var(--txt-2);line-height:1.9}
.asset-slot b{color:var(--cyan);font-weight:600}
.asset-slot small{color:var(--txt-3)}
.placeholder-note{
  border:1px dashed rgba(109,40,217,.45);border-radius:var(--radius);padding:18px 22px;
  background:rgba(109,40,217,.05);color:var(--txt-2);margin-bottom:26px;font-size:.94rem;
}
.placeholder-note strong{color:var(--violet)}
.note{border-left:3px solid var(--cyan);padding:4px 0 4px 16px;color:var(--txt-2);margin:22px 0;background:linear-gradient(90deg,rgba(14,116,144,.05),transparent 60%)}
.note strong{color:var(--txt)}

/* FAQ */
.faq{display:grid;gap:12px;max-width:860px}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 clamp(14px,2vw,20px);box-shadow:var(--shadow)}
.faq summary{
  cursor:pointer;list-style:none;padding:16px 0;font-weight:600;color:var(--txt);
  display:flex;justify-content:space-between;gap:16px;align-items:flex-start;min-height:44px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--cyan);flex-shrink:0}
.faq details[open] summary::after{content:"–"}
.faq-a{padding:0 0 6px}
.faq-a p{margin:0 0 .9em}

/* 转化区 */
.cta-band{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(14,116,144,.06),rgba(109,40,217,.06))}
.cta-inner{display:flex;gap:26px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:clamp(36px,5vw,52px) 0}
.cta-inner h2{margin-bottom:.35em}
.cta-inner p{margin:0;max-width:560px}
.cta-inner .cta-row{margin-top:0}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);background:var(--bg-2);
  padding:52px 0 calc(28px + env(safe-area-inset-bottom,0px));font-size:.92rem;
}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.footer-cols h3{font-size:.78rem;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--txt-3);font-weight:500}
.footer-cols ul{list-style:none;padding:0;margin:0}
.footer-cols li{margin:.42em 0}
.footer-cols a{color:var(--txt-2);display:inline-block;padding:3px 0}
.footer-cols a:hover{color:var(--blue)}
.footer-brand p{font-size:.9rem;max-width:380px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:34px;padding-top:20px;
}
.footer-bottom p{margin:0;font-size:.8rem;color:var(--txt-3);max-width:820px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}

/* ── 大屏：加宽内容与留白 ─────────────── */
@media (min-width:1400px){
  :root{--max:1240px}
}

/* ── 中屏（小笔记本 / 竖屏平板）───────── */
@media (max-width:1200px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:1.4fr 1fr 1fr;gap:24px}
  .footer-brand{grid-column:1/-1}
}

/* ── 平板 ───────────────────────────── */
@media (max-width:980px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}


/* ── 导航折叠：1100px 以下收进汉堡菜单（导航 + 两个按钮会挤）── */
@media (max-width:1100px){
  .header-inner{gap:10px}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;
    background:rgba(8,12,20,.985);border-bottom:1px solid rgba(255,255,255,.12);
    padding:6px calc(var(--pad) + env(safe-area-inset-right,0px)) 14px calc(var(--pad) + env(safe-area-inset-left,0px));
    max-height:calc(100dvh - var(--header-h));overflow-y:auto;
  }
  .nav a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:1rem;min-height:46px;color:rgba(255,255,255,.8);white-space:normal}
  .nav a:last-child{border-bottom:0}
  .nav a.active::after{display:none}
  .nav a.active{color:#7FE7FF}
  .nav-toggle{display:block;position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
  .nav-toggle:focus-visible ~ .nav-burger{outline:2px solid #7FE7FF;outline-offset:4px;border-radius:8px}
  .nav-toggle:checked ~ .nav{display:flex}
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;margin-left:auto;padding:12px 4px;cursor:pointer;min-height:44px}
  .nav-burger span{width:22px;height:2px;background:#fff;border-radius:2px;display:block}
  /* 折叠后登录入口在菜单里，桌面端的两个按钮让位 */
  .nav-cta-ghost{display:none}
}

/* ── 手机：折叠菜单 + 单列 ─────────────── */
@media (max-width:820px){
  .header-inner{gap:10px}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;
    background:rgba(255,255,255,.99);border-bottom:1px solid var(--line);
    padding:6px calc(var(--pad) + env(safe-area-inset-right,0px)) 14px calc(var(--pad) + env(safe-area-inset-left,0px));
    max-height:calc(100dvh - var(--header-h));overflow-y:auto;
  }
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:1rem;min-height:46px}
  .nav a:last-child{border-bottom:0}
  .nav a.active::after{display:none}
  .nav a.active{color:var(--blue)}
  .nav-toggle{display:block;position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
  .nav-toggle:focus-visible ~ .nav-burger{outline:2px solid var(--blue);outline-offset:4px;border-radius:8px}
  .nav-toggle:checked ~ .nav{display:flex}
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;margin-left:auto;padding:12px 4px;cursor:pointer;min-height:44px}
  .nav-burger span{width:22px;height:2px;background:var(--txt);border-radius:2px;display:block}
  .nav-cta{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .cta-row .btn{flex:1 1 100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-cols{grid-template-columns:1fr}
}

/* ── 窄屏手机：表格转卡片 ─────────────── */
@media (max-width:620px){
  .table-wrap{border:0;background:none;overflow:visible;box-shadow:none}
  table{min-width:0;display:block}
  thead{display:none}
  tbody,tr,td{display:block}
  tr{
    border:1px solid var(--line);border-radius:12px;background:var(--surface);
    padding:6px 14px;margin-bottom:12px;box-shadow:var(--shadow);
  }
  td{border-bottom:1px solid var(--line);padding:12px 0}
  tr td:last-child{border-bottom:0}
  td[data-label]::before{
    content:attr(data-label);display:block;font-family:var(--mono);font-size:.72rem;
    letter-spacing:.12em;text-transform:uppercase;color:var(--txt-3);margin-bottom:4px;
  }
}

/* ── 横屏手机：压缩纵向留白 ───────────── */
@media (orientation:landscape) and (max-height:560px){
  .hero{padding:36px 0 32px}
  .section{padding:32px 0}
  .page-head{padding:24px 0 4px}
  .cta-inner{padding:28px 0}
}

/* ── 极窄屏 ─────────────────────────── */
@media (max-width:400px){
  .brand-text em{display:none}
  .tag{font-size:.74rem}
}

/* ══════════════════════════════════════════════════════════════
   图形组件：内联 SVG 图标 / 纯 CSS 产品示意图 / SVG 链路图
   全部零请求、零版权风险、任意缩放
   ══════════════════════════════════════════════════════════════ */

.ico{width:20px;height:20px;flex-shrink:0}
.ico-chip{
  width:46px;height:46px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(14,116,144,.12),rgba(109,40,217,.12));
  border:1px solid var(--line-2);color:var(--cyan);flex-shrink:0;
}
.ico-chip .ico{width:23px;height:23px}
.page-head-inner{display:flex;gap:18px;align-items:flex-start}
.card-ico-row{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.card-ico-row .ico{color:var(--cyan)}
.card-ico-row .card-ico{margin:0}
.section.alt{background:var(--bg-2)}

/* Hero 双栏 */
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center}
.hero-grid .hero-inner{max-width:none}

/* 产品示意图：企微群聊窗口 */
.mock{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:0 20px 55px -26px rgba(15,23,42,.4),0 2px 6px rgba(15,23,42,.05);
}
.mock-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.mock-dots{display:flex;gap:5px}
.mock-dots i{width:8px;height:8px;border-radius:50%;background:#DCE4EE;display:block}
.mock-title{font-size:.86rem;font-weight:600}
.mock-live{margin-left:auto;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;color:var(--cyan);display:flex;align-items:center;gap:6px}
.mock-live::before{content:"";width:6px;height:6px;border-radius:50%;background:#16A34A}
.mock-body{padding:18px 16px 24px;display:grid;gap:14px}
.msg{display:flex;gap:9px;align-items:flex-end}
.msg-ai{justify-content:flex-end}
.avatar{
  width:28px;height:28px;border-radius:9px;background:#E8EEF6;color:var(--txt-2);
  font-size:.72rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:600;
}
.avatar-ai{background:var(--brand);color:#fff;font-size:.64rem;letter-spacing:.04em}
.bubble{
  max-width:78%;margin:0;font-size:.88rem;line-height:1.6;color:var(--txt);background:var(--surface-2);
  border:1px solid var(--line);border-radius:14px 14px 14px 5px;padding:10px 13px;
}
.bubble-ai{
  background:linear-gradient(135deg,rgba(14,116,144,.10),rgba(109,40,217,.10));
  border-color:rgba(29,78,216,.22);border-radius:14px 14px 5px 14px;
}
.mention{font-style:normal;color:var(--blue);font-weight:600;margin-right:2px}
.bubble.typing{display:flex;gap:4px;align-items:center;padding:15px 16px}
.bubble.typing i{width:6px;height:6px;border-radius:50%;background:var(--blue);display:block;animation:mk-blink 1.2s infinite}
.bubble.typing i:nth-child(2){animation-delay:.2s}
.bubble.typing i:nth-child(3){animation-delay:.4s}
@keyframes mk-blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:.9;transform:translateY(-3px)}}
.float-badge{
  position:absolute;left:-18px;bottom:22px;display:flex;gap:10px;align-items:center;background:#fff;
  border:1px solid var(--line-2);border-radius:13px;padding:10px 14px;color:var(--txt);
  box-shadow:0 16px 36px -18px rgba(15,23,42,.45);
}
.float-badge .ico{color:#16A34A}
/* 深色 hero 里 b 会继承白色 → 白底卡片上的"工单 #2031 已登记"看不见，这里显式指定 */
.float-badge b{display:block;font-size:.82rem;color:var(--txt)}
.float-badge small{color:var(--txt-3);font-size:.72rem}

/* 数据条 */

/* 流程节点：连接线 + 图标 */
.step-ico{color:var(--cyan);margin-bottom:8px}
@media (min-width:981px){
  .steps li::after{
    content:"";position:absolute;right:-14px;top:50%;width:14px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,rgba(14,116,144,.55),rgba(109,40,217,.55));
  }
  .steps li:last-child::after{display:none}
}

/* 卡片内的「了解更多」 */
a.card .more{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-size:.86rem;font-weight:600;margin-top:14px}
a.card .more::after{content:"→";transition:transform .2s ease}
@media (hover:hover){ a.card:hover .more::after{transform:translateX(3px)} }

/* SVG 链路图 */
.diagram-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:8px 0 0}
.diagram{width:100%;max-width:860px;height:auto;display:block;margin:0 auto}
.diagram text{font-family:var(--font)}
.d-box{fill:#fff;stroke:var(--line);stroke-width:1.5}
.d-ai{fill:#F7FAFF;stroke:rgba(29,78,216,.5);stroke-width:1.6}
.d-t{font-size:15px;font-weight:600;fill:var(--txt);text-anchor:middle}
.d-ti{fill:url(#dgrad)}
.d-t-l{font-size:15px;font-weight:600;fill:var(--txt)}
.d-s{font-size:12.5px;fill:var(--txt-2);text-anchor:middle}
.d-line{fill:none;stroke:var(--blue);stroke-width:1.6;stroke-dasharray:6 5}
.d-chip{fill:#fff;stroke:var(--line-2);stroke-width:1.2}
.d-chip-a{fill:#EEF4FF;stroke:rgba(29,78,216,.45);stroke-width:1.2}
.d-chipt{font-size:12px;fill:var(--txt-2);text-anchor:middle}
.d-chipt-a{font-size:12px;fill:var(--blue);text-anchor:middle;font-weight:600}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .mock{max-width:520px}
  .float-badge{left:auto;right:14px}
}
@media (max-width:820px){
  .page-head-inner{gap:14px}
  .ico-chip{width:42px;height:42px;border-radius:12px}
}
@media (max-width:620px){
  .diagram{min-width:620px}
}

/* ══════════════════════════════════════════════════════════════
   表达型组件：让图形和关键词承担信息，文字只做注解
   ══════════════════════════════════════════════════════════════ */

/* 一句话结论条 */
.claim{
  position:relative;padding-left:18px;margin:0 0 22px;max-width:820px;
  font-size:clamp(1.06rem,2.1vw,1.34rem);font-weight:650;line-height:1.55;color:var(--txt);
}
.claim::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand)}
.claim em{font-style:normal;background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 关键词芯片 */
.kw-row{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0 0}
.kw{
  font-size:.84rem;font-weight:600;color:var(--cyan);padding:6px 14px;border-radius:999px;
  background:linear-gradient(135deg,rgba(14,116,144,.10),rgba(109,40,217,.10));
  border:1px solid rgba(29,78,216,.22);
}
.kw.plain{color:var(--txt-2);background:var(--surface-2);border-color:var(--line)}

/* 大字数字 / 指标卡 */
.kpi{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.kpi > div{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.kpi b{display:block;font-size:clamp(1.35rem,2.8vw,1.85rem);font-weight:700;line-height:1.2;
  background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi span{display:block;font-size:.88rem;color:var(--txt-2);margin-top:4px}
.kpi small{display:block;font-size:.75rem;color:var(--txt-3);margin-top:8px}

/* 图标清单：一行一条，长句拆短 */
.spec{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.spec li{display:flex;gap:11px;align-items:flex-start;margin:0;font-size:.94rem;color:var(--txt-2)}
.spec li .ico{color:var(--cyan);margin-top:.22em;width:18px;height:18px}
.spec li b{color:var(--txt)}

/* 两栏对比：✕ 常见做法 / ✓ 我们的做法 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.compare > div{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff;box-shadow:var(--shadow)}
.compare .bad{background:var(--surface-2);border-color:var(--line-2)}
.compare .good{background:linear-gradient(135deg,rgba(14,116,144,.06),rgba(109,40,217,.06));border-color:rgba(29,78,216,.3)}
.compare h3{display:flex;align-items:center;gap:9px;font-size:.94rem;margin:0 0 14px;letter-spacing:.02em}
.compare .bad h3{color:var(--txt-3)}
.compare .good h3{color:var(--blue)}
.compare ul{list-style:none;padding:0;margin:0}
.compare li{position:relative;padding-left:24px;margin:.5em 0;font-size:.92rem;color:var(--txt-2)}
.compare .bad li::before{content:"✕";position:absolute;left:2px;top:0;color:#94A3B8;font-size:.78rem}
.compare .good li::before{content:"✓";position:absolute;left:2px;top:0;color:#16A34A;font-weight:700}
.compare li b{color:var(--txt)}

/* 纵向时间轴（服务流程 / 交付节奏） */
.timeline{list-style:none;padding:0;margin:0;max-width:760px}
.timeline li{position:relative;padding:0 0 24px 48px;margin:0}
.timeline li::before{content:"";position:absolute;left:16px;top:22px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,rgba(14,116,144,.45),rgba(109,40,217,.45))}
.timeline li:last-child{padding-bottom:0}
.timeline li:last-child::before{display:none}
.timeline .dot{
  position:absolute;left:6px;top:0;width:22px;height:22px;border-radius:50%;background:#fff;
  border:2px solid rgba(29,78,216,.5);display:flex;align-items:center;justify-content:center;color:var(--blue);
}
.timeline .dot .ico{width:12px;height:12px}
.timeline b{display:block;color:var(--txt);font-size:1rem}
.timeline span{font-size:.92rem;color:var(--txt-2)}
.timeline .kw-row{margin-top:8px}

/* 图片素材位：醒目、带编号徽章 */
.asset-slot{
  position:relative;margin:34px 0 26px;border:2px dashed rgba(14,116,144,.55);border-radius:var(--radius);
  background:repeating-linear-gradient(135deg,rgba(14,116,144,.055) 0 14px,rgba(109,40,217,.055) 14px 28px);
  padding:30px 20px 24px;text-align:center;
}
.asset-slot .badge{
  position:absolute;top:-13px;left:16px;background:var(--brand);color:#fff;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;padding:5px 12px;border-radius:999px;
  box-shadow:0 8px 18px -8px rgba(29,78,216,.7);
}
.asset-slot .slot-ico{color:var(--cyan);display:flex;justify-content:center;margin-bottom:10px}
.asset-slot .slot-ico .ico{width:30px;height:30px}
.asset-slot figcaption{font-size:.86rem;color:var(--txt-2);line-height:1.85;max-width:640px;margin:0 auto}
.asset-slot b{color:var(--txt)}
.asset-slot .req{color:#B45309;font-weight:600}
.asset-slot .opt{color:var(--txt-3);font-weight:600}
.asset-slot small{display:block;margin-top:6px;font-family:var(--mono);font-size:.72rem;color:var(--txt-3)}

/* 小结条：视觉断点 */
.strip{
  border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-2);
  padding:18px 22px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:22px 0 0;
}
.strip .ico{color:var(--cyan)}
.strip p{margin:0;font-size:.95rem}

@media (max-width:980px){
  .compare{grid-template-columns:1fr}
  .kpi{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  .kpi{grid-template-columns:1fr}
  .timeline li{padding-left:40px}
  .claim{padding-left:14px}
}

/* 两栏并列（非好坏对比，例如「我们负责 / 你提供」） */
.compare .side{background:linear-gradient(135deg,rgba(14,116,144,.06),rgba(109,40,217,.06));border-color:rgba(29,78,216,.3)}
.compare .side h3{color:var(--blue)}
.compare .side li::before{content:"•";position:absolute;left:4px;top:-1px;color:var(--cyan);font-weight:700}

/* ══════════════════════════════════════════════════════════════
   版式系统 v3：编辑式排版，替代等宽卡片堆叠
   ══════════════════════════════════════════════════════════════ */

/* 章节头：细线 + 大编号 + 标题块 */
.sec-head{
  display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:start;
  padding-top:22px;border-top:1px solid var(--line);margin-bottom:clamp(28px,3.4vw,44px);
}
.sec-no{
  font-family:var(--mono);font-size:.8rem;letter-spacing:.18em;color:var(--txt-3);
  padding-top:.5em;white-space:nowrap;
}
.sec-head h2{margin:0 0 .35em;max-width:24em}
.sec-head p{margin:0;max-width:46em;font-size:1rem}
.sec-head .kw-row{margin-top:16px}

/* 左右分栏（可反向），用于「文字 + 图形」并置 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4.5vw,64px);align-items:center}
.split.rev > .split-text{order:2}
.split-text{max-width:34em}
.split-text h3{font-size:clamp(1.1rem,1.9vw,1.4rem);margin-bottom:.5em}
.split-visual{min-width:0}

/* 特性行：细线分隔的编号行，取代卡片网格 */
.rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.rows > li{
  display:grid;grid-template-columns:56px minmax(0,1fr) minmax(0,15em);
  gap:20px;align-items:start;padding:22px 4px;margin:0;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.rows .rows-no{font-family:var(--mono);font-size:.76rem;letter-spacing:.16em;color:var(--txt-3);padding-top:.35em}
.rows h3{margin:0 0 .3em;font-size:1.02rem}
.rows p{margin:0;font-size:.94rem}
.rows .rows-kw{font-size:.84rem;color:var(--txt-3);text-align:right;line-height:1.9}
.rows .rows-kw span{
  display:inline-block;border:1px solid var(--line);border-radius:999px;padding:2px 10px;margin:0 0 6px 6px;
  background:#fff;color:var(--txt-2);
}
@media (hover:hover){ .rows > li:hover{background:linear-gradient(90deg,rgba(14,116,144,.045),rgba(109,40,217,.045))} }

/* 面板：有层级的容器（带渐变顶边 + 内衬网格） */
.panel{
  position:relative;border:1px solid var(--line);border-radius:18px;background:#fff;
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 24px 60px -40px rgba(15,23,42,.5);
  padding:clamp(22px,3vw,34px);overflow:hidden;
}
.panel::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--brand);opacity:.85}
.panel.grid-bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(80% 70% at 50% 0%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(80% 70% at 50% 0%,#000,transparent 78%);
}
.panel > *{position:relative}
.panel-title{
  display:flex;align-items:center;gap:12px;margin-bottom:18px;
  font-family:var(--mono);font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--txt-3);
}
.panel-title .ico{color:var(--cyan)}

/* 数据带：细线分隔的数字，不用卡片 */
.band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.band-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;padding:clamp(22px,3vw,30px) 0}
.band-inner > div{padding:0 clamp(14px,2.4vw,26px);border-left:1px solid var(--line)}
.band-inner > div:first-child{border-left:0;padding-left:0}
.band-inner b{
  display:block;font-size:clamp(1.3rem,2.6vw,1.75rem);font-weight:700;line-height:1.2;
  background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.band-inner span{display:block;font-size:.86rem;color:var(--txt-2);margin-top:2px}
.band-inner small{display:block;font-size:.75rem;color:var(--txt-3);margin-top:8px}

/* 矩阵对比表：单一容器，三列，表头固定在色块里 */
.matrix{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.matrix table{min-width:0;width:100%;border-collapse:collapse;font-size:.94rem}
.matrix thead th{
  background:var(--surface-2);font-family:var(--font);text-transform:none;letter-spacing:0;font-size:.86rem;
  color:var(--txt-2);padding:14px 18px;border-bottom:1px solid var(--line);
}
.matrix thead th:nth-child(2){color:var(--txt-3)}
.matrix thead th:nth-child(3){color:var(--blue);font-weight:650}
.matrix td{padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--txt-2)}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix td:first-child{color:var(--txt);font-weight:600;width:22%}
.matrix td.miss{color:var(--txt-3)}
.matrix td.hit{background:linear-gradient(90deg,rgba(14,116,144,.045),rgba(109,40,217,.045));color:var(--txt)}
.matrix td.miss::before{content:"✕ ";color:#94A3B8;font-size:.8rem}
.matrix td.hit::before{content:"✓ ";color:#16A34A;font-weight:700}

/* 步骤轨道：横向连接线 + 编号节点 */
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:0;border-top:1px solid var(--line);padding-top:26px;position:relative}
.rail::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,rgba(14,116,144,.55),rgba(109,40,217,.55))}
.rail > div{position:relative;padding:0 18px 0 0}
.rail > div + div{padding-left:22px;border-left:1px solid var(--line)}
.rail .rail-no{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;
  border:1px solid rgba(29,78,216,.35);color:var(--blue);font-family:var(--mono);font-size:.72rem;margin-bottom:12px;
  background:linear-gradient(135deg,rgba(14,116,144,.08),rgba(109,40,217,.08));
}
.rail h3{font-size:.98rem;margin-bottom:.3em}
.rail p{margin:0;font-size:.9rem}

/* 强调带：深色区块，用于关键结论 */
.statement{
  border-radius:18px;padding:clamp(28px,4vw,44px);color:#fff;
  background:linear-gradient(120deg,#0B2A3A 0%,#0F2A5C 52%,#2A1758 100%);
  position:relative;overflow:hidden;
}
.statement::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:conic-gradient(from 120deg,rgba(34,211,238,.35),rgba(99,102,241,.28),rgba(168,85,247,.35),rgba(34,211,238,.35));
  filter:blur(70px);opacity:.5;
}
.statement > *{position:relative}
.statement h2,.statement h3{color:#fff}
.statement p{color:rgba(255,255,255,.82);max-width:52em;margin-bottom:0}
.statement .kw{border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.1);color:#EAF4FF}
.statement .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3);color:#fff}
.statement .btn-ghost:hover{border-color:#fff;color:#fff}

/* 引文式大句 */
.pull{
  font-size:clamp(1.15rem,2.3vw,1.6rem);font-weight:650;line-height:1.5;color:var(--txt);
  max-width:30em;margin:0;
}
.pull em{font-style:normal;background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 小节标题（无编号） */
.mini-head{display:flex;align-items:center;gap:10px;margin:0 0 18px;font-size:.8rem;
  font-family:var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--txt-3)}
.mini-head .ico{color:var(--cyan)}

@media (max-width:1080px){
  .rows > li{grid-template-columns:44px minmax(0,1fr);gap:16px}
  .rows .rows-kw{grid-column:2;text-align:left;margin-top:8px}
  .rows .rows-kw span{margin:0 6px 0 0}
}
@media (max-width:980px){
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev > .split-text{order:0}
  .band-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 0}
  .band-inner > div:nth-child(odd){border-left:0;padding-left:0}
  .band-inner > div:nth-child(3){border-left:0;padding-left:0}
  .rail{grid-auto-flow:row;grid-auto-columns:auto;gap:0;border-top:0;padding-top:0}
  .rail::before{display:none}
  .rail > div{padding:0 0 20px}
  .rail > div + div{padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:20px}
}
@media (max-width:620px){
  .sec-head{grid-template-columns:1fr;gap:8px}
  .matrix td:first-child{width:auto}
  .matrix td.hit{background:none}
}

/* ══════════════════════════════════════════════════════════════
   视觉 v4：参考 redbearai / 腾讯云 —— 高饱和色彩体量 + 深色区块 + 密集能力矩阵
   ══════════════════════════════════════════════════════════════ */

:root{
  /* 深色区块（近黑深蓝） */
  --ink:#080C14;
  --ink-2:#0B1730;
  --ink-3:#1A1140;
  /* 高饱和主色 */
  --blue:#155EEF;
  --cyan:#00B2ED;
  --sky:#2468F5;
  --violet:#5740FF;
  --purple:#7C50F5;
  /* 浅蓝底 */
  --tint-1:#F5F9FF;
  --tint-2:#EAF3FF;
  --tint-3:#F0F9FE;
  --line:#E3EBF7;
  --line-2:#C9D8EE;
  --brand:linear-gradient(120deg,#00B2ED 0%,#155EEF 46%,#5740FF 100%);
  --brand-2:linear-gradient(120deg,#2468F5 0%,#5740FF 60%,#7C50F5 100%);
  --brand-3:linear-gradient(120deg,#00B2ED 0%,#2468F5 70%,#155EEF 100%);
  --shadow:0 1px 2px rgba(21,94,239,.05),0 14px 34px -24px rgba(21,94,239,.42);
  --shadow-hi:0 2px 6px rgba(21,94,239,.08),0 26px 54px -28px rgba(87,64,255,.55);
}
.section.alt{background:var(--tint-1)}
.band{background:var(--tint-3);border-color:var(--line)}
.statement{background:radial-gradient(700px 380px at 92% 0%,rgba(87,64,255,.5),transparent 62%),linear-gradient(140deg,#080C14,#0B1730 58%,#1A1140)}

/* 图标色块：把线性图标装进高饱和渐变方块（全站已有图标自动升级，无需改内容） */
.card-ico-row .ico,.panel-title .ico,.spec li .ico,.step-ico{
  color:#fff;background:var(--brand);border-radius:9px;flex-shrink:0;
  box-shadow:0 8px 18px -10px rgba(21,94,239,.85);
}
.card-ico-row .ico{width:30px;height:30px;padding:6px}
.panel-title .ico{width:26px;height:26px;padding:5px;border-radius:8px}
.spec li .ico{width:24px;height:24px;padding:4px;border-radius:7px}
.step-ico{display:inline-flex;width:34px;height:34px;padding:7px;border-radius:10px;margin-bottom:10px}
.strip .ico{width:26px;height:26px;padding:5px;border-radius:8px;color:#fff;background:var(--brand);flex-shrink:0}
/* 同组内轮换色相，避免一片同色 */
.grid > .card:nth-child(2) .card-ico-row .ico,.spec li:nth-child(2) .ico{background:var(--brand-3)}
.grid > .card:nth-child(3) .card-ico-row .ico,.spec li:nth-child(3) .ico{background:var(--brand-2)}
.grid > .card:nth-child(4) .card-ico-row .ico,.spec li:nth-child(4) .ico{background:linear-gradient(120deg,#5740FF,#7C50F5 70%,#00B2ED)}
.grid > .card:nth-child(5) .card-ico-row .ico,.spec li:nth-child(5) .ico{background:linear-gradient(120deg,#00B2ED,#5740FF)}
.steps li:nth-child(2) .step-ico{background:var(--brand-3)}
.steps li:nth-child(3) .step-ico{background:var(--brand-2)}
.steps li:nth-child(4) .step-ico{background:linear-gradient(120deg,#5740FF,#7C50F5 70%,#00B2ED)}

/* 深色 Hero */
.hero-dark{
  --grid:rgba(255,255,255,.06);
  position:relative;overflow:hidden;border-bottom:0;color:#fff;
  background:
    radial-gradient(900px 520px at 12% -10%,rgba(0,178,237,.34),transparent 62%),
    radial-gradient(820px 520px at 88% 4%,rgba(87,64,255,.42),transparent 64%),
    linear-gradient(158deg,#080C14 0%,#0B1730 56%,#1A1140 100%);
  padding:clamp(56px,8vw,96px) 0 clamp(52px,7vw,86px);
}
.hero-dark::after{
  content:"";position:absolute;width:min(680px,92vw);aspect-ratio:1;right:-14vw;top:-30%;border-radius:50%;
  background:conic-gradient(from 120deg,rgba(0,178,237,.4),rgba(36,104,245,.32),rgba(124,80,245,.4),rgba(0,178,237,.4));
  filter:blur(90px);opacity:.5;pointer-events:none;
}
.hero-dark h1{color:#fff}
.hero-dark h1 .hl{background:linear-gradient(110deg,#8FE9FF 0%,#9DB9FF 48%,#C9AEFF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-dark .lede{color:rgba(255,255,255,.8)}
.hero-dark .pill{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24);color:rgba(255,255,255,.88);box-shadow:none}
.hero-dark .kw{border-color:rgba(255,255,255,.24);background:rgba(255,255,255,.08);color:#EAF3FF}
.hero-dark .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.32);color:#fff;box-shadow:none}
@media (hover:hover){.hero-dark .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.16)}}
.hero-dark .btn-primary{box-shadow:0 18px 40px -16px rgba(0,178,237,.85)}
.hero-visual{position:relative}
.float-chip{
  position:absolute;top:10px;right:-14px;display:flex;align-items:center;gap:9px;padding:9px 14px;border-radius:12px;
  background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.6);color:var(--txt);
  box-shadow:0 18px 40px -18px rgba(8,12,20,.7);font-size:.82rem;font-weight:600;
}
.float-chip .ico{width:22px;height:22px;padding:4px;border-radius:7px;color:#fff;background:var(--brand)}
.hero-dark .mock{box-shadow:0 40px 90px -40px rgba(0,0,0,.85),0 0 0 1px rgba(255,255,255,.08)}

/* 深色区块 */
.darkband{
  position:relative;overflow:hidden;color:#fff;padding:clamp(46px,6vw,84px) 0;
  background:
    radial-gradient(760px 420px at 86% 0%,rgba(87,64,255,.45),transparent 62%),
    radial-gradient(620px 380px at 6% 100%,rgba(0,178,237,.28),transparent 60%),
    linear-gradient(140deg,#080C14,#0B1730 60%,#1A1140);
}
.darkband h2{color:#fff}
.darkband p{color:rgba(255,255,255,.78)}
.darkband .kw{border-color:rgba(255,255,255,.24);background:rgba(255,255,255,.08);color:#EAF3FF}
.darkband .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.32);color:#fff}
.darkband .sec-head{border-top-color:rgba(255,255,255,.18)}
.darkband .sec-no{color:rgba(255,255,255,.55)}
.darkband .spec li,.darkband .spec li b{color:rgba(255,255,255,.9)}
.darkband .tile{background:rgba(255,255,255,.055);border-color:rgba(255,255,255,.1)}
.darkband .tile p{color:rgba(255,255,255,.66)}

/* 能力矩阵（密集色块墙，参考腾讯云产品矩阵） */
.tilewall{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow);
}
.tile{background:#fff;padding:20px 16px;transition:background .2s ease,transform .2s ease}
.tile .tile-ico{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:12px;background:var(--brand);box-shadow:0 10px 22px -12px rgba(21,94,239,.9);
}
.tile .tile-ico .ico{width:20px;height:20px}
.tile h3{font-size:.94rem;margin:0 0 .25em}
.tile p{margin:0;font-size:.8rem;color:var(--txt-2);line-height:1.6}
.tile:nth-child(6n+2) .tile-ico{background:var(--brand-3)}
.tile:nth-child(6n+3) .tile-ico{background:var(--brand-2)}
.tile:nth-child(6n+4) .tile-ico{background:linear-gradient(135deg,#5740FF,#7C50F5)}
.tile:nth-child(6n+5) .tile-ico{background:linear-gradient(135deg,#00B2ED,#2468F5)}
.tile:nth-child(6n+6) .tile-ico{background:linear-gradient(135deg,#2468F5,#155EEF)}
@media (hover:hover){.tile:hover{background:var(--tint-1)}}

/* 图片素材位：换成浅蓝渐变底，未放图也有色彩体量 */
.asset-slot{
  border:1.5px dashed rgba(21,94,239,.45);
  background:
    repeating-linear-gradient(135deg,rgba(0,178,237,.07) 0 14px,rgba(87,64,255,.07) 14px 28px),
    linear-gradient(160deg,#F0F7FF,#EFEBFF);
}
.asset-slot .badge{background:linear-gradient(120deg,#155EEF,#5740FF);box-shadow:0 10px 22px -10px rgba(21,94,239,.85)}
.asset-slot .slot-ico{color:var(--blue)}
.imgpanel{border-radius:18px;padding:12px;background:linear-gradient(150deg,rgba(0,178,237,.16),rgba(87,64,255,.16));border:1px solid var(--line-2)}

/* 卡片与面板：更明显的色彩层次 */
.card{box-shadow:var(--shadow)}
.panel::before{height:3px;background:var(--brand)}
.rows > li:hover{background:linear-gradient(90deg,rgba(0,178,237,.06),rgba(87,64,255,.06))}
.band-inner b,.kpi b,.stat-grid b,.band-inner span{}

@media (max-width:1200px){.tilewall{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:980px){.tilewall{grid-template-columns:repeat(3,minmax(0,1fr))}.float-chip{right:auto;left:0}}
@media (max-width:620px){
  .tilewall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tile{padding:16px 13px}
  /* 手机端：悬浮元素不再隐藏/悬空，改成示意图内的流式布局
     —— "24h 在线接待"放在示意图上方，工单卡片放进窗口底部（原来被 .mock 的 overflow:hidden 裁掉） */
  .hero-visual{display:flex;flex-direction:column}
  .float-chip{
    position:static;order:-1;align-self:flex-start;margin:0 0 14px;animation:none;
    background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#EAF3FF;
  }
  .float-badge{
    position:static;left:auto;right:auto;bottom:auto;margin:0;border-radius:0;border:0;
    border-top:1px solid var(--line);box-shadow:none;background:var(--surface-2);
  }
}

/* 页头：深色 banner（与参考站一致的深色区块节奏） */
.page-head{
  --grid:rgba(255,255,255,.055);
  position:relative;overflow:hidden;color:#fff;padding:clamp(20px,2.6vw,28px) 0 clamp(38px,5vw,56px);
  background:
    radial-gradient(720px 400px at 88% -20%,rgba(87,64,255,.42),transparent 62%),
    radial-gradient(560px 340px at 8% 110%,rgba(0,178,237,.28),transparent 60%),
    linear-gradient(150deg,#080C14,#0B1730 58%,#1A1140);
  border-bottom:0;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(75% 80% at 50% 0%,#000 10%,transparent 80%);
  -webkit-mask-image:radial-gradient(75% 80% at 50% 0%,#000 10%,transparent 80%);
}
.page-head .wrap{position:relative;z-index:1}
.page-head h1{color:#fff;margin-bottom:.4em}
.page-head .lede{color:rgba(255,255,255,.8);max-width:60em}
.page-head .breadcrumb{color:rgba(255,255,255,.55);padding:0 0 18px}
.page-head .breadcrumb a{color:rgba(255,255,255,.7)}
.page-head .breadcrumb a:hover{color:#fff}
.page-head .ico-chip{
  background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24);color:#8FE9FF;
}
.page-head + .section{border-top:0}
a.tile{display:block;color:inherit}
a.tile:hover{color:inherit}

/* 全站深色收尾：CTA 带 + 页脚（与参考站的深色节奏一致） */
.cta-dark{padding:clamp(44px,5.4vw,72px) 0}
.cta-dark .cta-inner{padding:0}
main{flex:1 0 auto;width:100%}
.site-footer{
  margin-top:auto;position:relative;color:#fff;border-top:0;background:
    radial-gradient(700px 380px at 88% 0%,rgba(87,64,255,.34),transparent 62%),
    linear-gradient(160deg,#080C14,#0A1428 60%,#120C2E);
  padding:clamp(40px,5vw,64px) 0 calc(26px + env(safe-area-inset-bottom,0px));
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--brand);opacity:.9}
.site-footer .footer-cols h3{color:rgba(255,255,255,.5)}
.site-footer .footer-cols a{color:rgba(255,255,255,.78)}
.site-footer .footer-cols a:hover{color:#fff}
.site-footer .footer-brand p{color:rgba(255,255,255,.68)}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text em{color:rgba(255,255,255,.5)}
.site-footer .footer-bottom{border-top-color:rgba(255,255,255,.16)}
.site-footer .footer-bottom p{color:rgba(255,255,255,.55)}
.site-footer .footer-bottom a{color:rgba(255,255,255,.78)}


/* ── 对比度修正：白字/白图标所用的渐变必须足够深（WCAG AA / UI 组件 3:1）── */
:root{
  --brand-ui:linear-gradient(120deg,#0E6FE0 0%,#155EEF 46%,#4F35F0 100%);
  --hue-1:linear-gradient(135deg,#0E6FE0,#155EEF);
  --hue-2:linear-gradient(135deg,#155EEF,#4F35F0);
  --hue-3:linear-gradient(135deg,#4F35F0,#7C50F5);
  --hue-4:linear-gradient(135deg,#0A8FD8,#0E6FE0);
  --hue-5:linear-gradient(135deg,#2468F5,#155EEF);
}
.btn-primary{background:var(--brand-ui);color:#fff}
.btn-primary:hover{color:#fff}
.card-ico-row .ico,.panel-title .ico,.spec li .ico,.step-ico,.strip .ico,.tile .tile-ico,.float-chip .ico{background:var(--hue-1)}
.grid > .card:nth-child(2) .card-ico-row .ico,.spec li:nth-child(2) .ico,.tile:nth-child(6n+2) .tile-ico{background:var(--hue-4)}
.grid > .card:nth-child(3) .card-ico-row .ico,.spec li:nth-child(3) .ico,.tile:nth-child(6n+3) .tile-ico{background:var(--hue-5)}
.grid > .card:nth-child(4) .card-ico-row .ico,.spec li:nth-child(4) .ico,.tile:nth-child(6n+4) .tile-ico{background:var(--hue-2)}
.grid > .card:nth-child(5) .card-ico-row .ico,.spec li:nth-child(5) .ico,.tile:nth-child(6n+5) .tile-ico{background:var(--hue-3)}
.tile:nth-child(6n+6) .tile-ico{background:var(--hue-2)}
.steps li:nth-child(2) .step-ico{background:var(--hue-4)}
.steps li:nth-child(3) .step-ico{background:var(--hue-5)}
.steps li:nth-child(4) .step-ico{background:var(--hue-3)}
.asset-slot .badge{background:var(--brand-ui)}
.hero h1 .hl,.hero-dark h1 .hl,.claim em,.pull em,.stat-grid b,.kpi b,.band-inner b{background:var(--brand-ui)}

/* ══════════════════════════════════════════════════════════════
   视觉 v5：大图占比 + 动效（滚动淡入 / 渐变流动 / 连线流动）
   ══════════════════════════════════════════════════════════════ */

/* 滚动淡入（由 JS 添加 .reveal，未启用 JS 时内容照常可见） */
.reveal{opacity:0;transform:translateY(20px)}
.reveal.in{opacity:1;transform:none;transition:opacity .7s cubic-bezier(.22,.7,.3,1),transform .7s cubic-bezier(.22,.7,.3,1)}
@media (prefers-reduced-motion:reduce){.reveal,.reveal.in{opacity:1;transform:none;transition:none}}

/* 首页 Hero 光晕缓慢流动 */
@keyframes glow-drift{0%{transform:translate3d(0,0,0) rotate(0deg)}50%{transform:translate3d(-3%,3%,0) rotate(12deg)}100%{transform:translate3d(0,0,0) rotate(0deg)}}
.hero-dark::after{animation:glow-drift 22s ease-in-out infinite}
.hero-dark .float-chip{animation:chip-float 6s ease-in-out infinite}
@keyframes chip-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
/* 连线流动（示意图） */
@keyframes dash-flow{to{stroke-dashoffset:-60}}
.d-line{animation:dash-flow 3.2s linear infinite}
/* 步骤节点呼吸 */
@keyframes node-pulse{0%,100%{box-shadow:0 0 0 0 rgba(21,94,239,.35)}50%{box-shadow:0 0 0 7px rgba(21,94,239,0)}}
.timeline .dot{animation:node-pulse 3s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){
  .hero-dark::after,.hero-dark .float-chip,.d-line,.timeline .dot{animation:none}
}

/* 全宽展示台（深色）：承载控制台大图 */
.showcase{
  position:relative;border-radius:20px;overflow:hidden;padding:14px;
  background:linear-gradient(140deg,#0A1020,#101A38 55%,#1A1140);
  box-shadow:0 40px 90px -50px rgba(8,12,20,.9),0 0 0 1px rgba(255,255,255,.06) inset;
}
.showcase .sc-top{
  display:flex;align-items:center;gap:10px;padding:6px 8px 12px;
  color:rgba(255,255,255,.72);font-size:.82rem;
}
.showcase .sc-dots{display:flex;gap:5px}
.showcase .sc-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);display:block}
.showcase .sc-live{margin-left:auto;display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;color:#7FE7FF}
.showcase .sc-live::before{content:"";width:6px;height:6px;border-radius:50%;background:#34D399;box-shadow:0 0 10px #34D399}
.sc-body{display:grid;grid-template-columns:190px minmax(0,1fr);gap:12px}
.sc-side{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px;
  display:grid;gap:8px;align-content:start;font-size:.84rem;color:rgba(255,255,255,.62);
}
.sc-side b{
  display:block;font-size:.78rem;color:#fff;background:linear-gradient(120deg,rgba(0,178,237,.28),rgba(87,64,255,.28));
  border:1px solid rgba(255,255,255,.12);border-radius:9px;padding:8px 10px;font-weight:600;
}
.sc-main{background:#fff;border-radius:14px;padding:16px;display:grid;gap:14px;min-width:0}
.sc-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.sc-kpis div{border:1px solid var(--line);border-radius:11px;padding:11px 12px;background:var(--tint-1)}
.sc-kpis b{display:block;font-size:1.12rem;font-weight:700;background:var(--brand-ui);-webkit-background-clip:text;background-clip:text;color:transparent}
.sc-kpis span{font-size:.74rem;color:var(--txt-2)}
.sc-table{margin:0;border:1px solid var(--line);border-radius:11px;overflow:hidden;min-width:0;font-size:.82rem}
.sc-table th{background:var(--surface-2);padding:9px 12px;font-size:.7rem}
.sc-table td{padding:10px 12px}
.sc-table td.on{color:#0F766E;font-weight:600}
.sc-table td.on::before{content:"● ";font-size:.7rem}
@media (max-width:820px){
  .sc-body{grid-template-columns:1fr}
  .sc-side{grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;align-content:center}
  .sc-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* 场景双语料视觉（会话侧 + 记录侧） */
.duo{display:grid;grid-template-columns:1.05fr .95fr;gap:18px;align-items:stretch}
.duo > div{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow);padding:16px;min-width:0}
.duo .duo-head{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--txt-3);margin-bottom:12px}
.duo .duo-head .ico{width:22px;height:22px;padding:4px;border-radius:7px;color:#fff;background:var(--hue-1)}
.rec{display:grid;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.rec div{display:grid;grid-template-columns:88px minmax(0,1fr);gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);font-size:.84rem}
.rec div:last-child{border-bottom:0}
.rec span{color:var(--txt-3);font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;padding-top:.15em}
.rec b{color:var(--txt);font-weight:600}
@media (max-width:980px){.duo{grid-template-columns:1fr}}

/* 素材位放大：全宽 + 有高度，未放图也占足版面 */
.asset-slot{min-height:180px;display:flex;flex-direction:column;justify-content:center;align-items:center}
.asset-slot.banner{min-height:260px}

/* 数据带数字流动渐变 */
@keyframes grad-shift{0%{background-position:0% 50%}100%{background-position:100% 50%}}
.band-inner b,.sc-kpis b,.kpi b{background-size:200% 100%;animation:grad-shift 8s linear infinite alternate}
@media (prefers-reduced-motion:reduce){.band-inner b,.sc-kpis b,.kpi b{animation:none}}

/* ── 修复：渐变文字必须用 background-image（用 background 简写会重置 background-clip，导致渲染成实心方块）── */
.hero h1 .hl,.hero-dark h1 .hl,.claim em,.pull em{
  background-image:var(--brand-ui);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-grid b,.kpi b,.band-inner b,.sc-kpis b{
  background-image:var(--brand-ui);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ── Hero 工单卡片：放在窗口内左下角
     （原来用负偏移"挂"在窗口外，被 .mock 的 overflow:hidden 裁掉左右和底部）── */
.float-badge{left:16px;bottom:16px}
/* 桌面端给窗口底部留出卡片高度，工单卡片不再压住最后一条气泡（手机上卡片是流式的，无需留白） */
@media (min-width:621px){.hero-dark .mock-body{padding-bottom:78px}}

/* 分栏内的示意图放大填满 ── */
.split-visual .diagram{max-width:100%}
.split-visual{display:flex;align-items:center}

/* ── 页头改为深色，与深色 Hero / 页头横幅 / 页脚形成统一基调 ── */
.site-header{background:rgba(8,12,20,.9);border-bottom:1px solid rgba(255,255,255,.1)}
.site-header .brand-text{color:#fff}
.site-header .brand-text em{color:rgba(255,255,255,.5)}
.site-header .brand-mark::after{background:var(--ink)}
.nav a{color:rgba(255,255,255,.72)}
@media (hover:hover){.nav a:hover{color:#fff}}
.nav a.active{color:#fff}
.nav-burger span{background:#fff}
@media (max-width:820px){
  .nav{background:rgba(8,12,20,.985);border-bottom-color:rgba(255,255,255,.12)}
  .nav a{border-bottom-color:rgba(255,255,255,.1);color:rgba(255,255,255,.8)}
  .nav a.active{color:#7FE7FF}
}

/* 深色区块内的步骤编号提亮 */
.darkband .rail-no,.hero-dark .rail-no{
  color:#9FD8FF;border-color:rgba(159,216,255,.5);
  background:linear-gradient(135deg,rgba(0,178,237,.22),rgba(124,80,245,.22));
}
.darkband .rail > div + div{border-left-color:rgba(255,255,255,.14)}
.darkband .rail::before{background:linear-gradient(90deg,rgba(0,178,237,.75),rgba(124,80,245,.75))}

/* 补充两个色彩锚点，避免整墙偏蓝（参考腾讯云的少量异色点缀） */
.tile:nth-child(7n+1) .tile-ico{background:linear-gradient(135deg,#0E9F8E,#0E6FE0)}
.tile:nth-child(11n) .tile-ico{background:linear-gradient(135deg,#E4572E,#7C50F5)}
.tile:nth-child(7n+1) .tile-ico,.tile:nth-child(11n) .tile-ico{box-shadow:0 10px 22px -12px rgba(14,159,142,.8)}

nav .nav-only-mobile{display:none}
@media (max-width:1100px){
  nav .nav-only-mobile{display:inline-flex}
}

/* ══════════════════════════════════════════════════════════════
   数据带 v2：深色 + 图标 + 渐变数字（替换原来"浅灰 + 细线"的寡淡样式）
   ══════════════════════════════════════════════════════════════ */
.band{
  position:relative;overflow:hidden;color:#fff;border:0;
  background:
    radial-gradient(680px 320px at 10% 0%,rgba(0,178,237,.26),transparent 62%),
    radial-gradient(660px 340px at 90% 120%,rgba(87,64,255,.3),transparent 62%),
    linear-gradient(152deg,#080C14 0%,#0B1730 58%,#161036 100%);
}
.band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(0,178,237,.6),rgba(87,64,255,.6));
}
.band-inner{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;padding:clamp(30px,3.6vw,44px) 0}
.band-inner > div{position:relative;padding:0 clamp(16px,2.4vw,30px);border-left:1px solid rgba(255,255,255,.14)}
.band-inner > div:first-child{border-left:0;padding-left:0}
.band-ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:var(--hue-1);box-shadow:0 12px 26px -14px rgba(21,94,239,.95);margin-bottom:16px;
}
.band-ico .ico{width:20px;height:20px}
.band-inner > div:nth-child(2) .band-ico{background:var(--hue-4)}
.band-inner > div:nth-child(3) .band-ico{background:var(--hue-2)}
.band-inner > div:nth-child(4) .band-ico{background:var(--hue-3)}
.band-inner b{
  display:block;line-height:1.05;font-weight:700;font-size:clamp(1.6rem,3.1vw,2.15rem);
  background-image:linear-gradient(120deg,#7FE7FF 0%,#9DB9FF 52%,#C9AEFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% 100%;animation:grad-shift 9s linear infinite alternate;
}
.band-inner span{display:block;color:rgba(255,255,255,.9);font-size:.94rem;font-weight:600;margin-top:8px}
.band-inner small{display:block;color:rgba(255,255,255,.52);font-size:.78rem;margin-top:6px;line-height:1.6}
@media (prefers-reduced-motion:reduce){.band-inner b{animation:none}}
@media (max-width:980px){
  .band-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 0}
  .band-inner > div:nth-child(odd){border-left:0;padding-left:0}
}
@media (max-width:560px){
  /* 手机端保持两列两行（原来塌成 4 行，占掉整屏） */
  .band-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 10px}
  .band-inner > div{border-left:0;padding-left:0;padding-right:0}
}

/* ── 数据带修正：不能覆盖 .wrap 的左右内边距（简写会把 padding-left/right 清零，手机上文字贴边）── */
.band-inner{
  padding-top:clamp(30px,3.6vw,44px);padding-bottom:clamp(30px,3.6vw,44px);
  padding-left:calc(var(--pad) + env(safe-area-inset-left,0px));
  padding-right:calc(var(--pad) + env(safe-area-inset-right,0px));
}
@media (max-width:980px){
  .band-inner{gap:24px 0}
}
@media (max-width:560px){
  .band-inner{gap:18px 10px}
  .band-ico{width:34px;height:34px;border-radius:10px;margin-bottom:12px}
  .band-ico .ico{width:17px;height:17px}
  .band-inner b{font-size:1.55rem}
  .band-inner span{font-size:.92rem;margin-top:6px}
}

/* ══════════════════════════════════════════════════════════════
   ① 数据带：图标与文字居中（原来左侧对齐，图标看着"跑偏"）
   ══════════════════════════════════════════════════════════════ */
.band-inner > div{text-align:center}
.band-ico{margin-left:auto;margin-right:auto}

/* ══════════════════════════════════════════════════════════════
   ② Hero 背景图接入（assets/img/hero-bg.webp）
   三层叠加：光晕在最上、暗色压底保证文字对比度、图片在最下
   ══════════════════════════════════════════════════════════════ */
.hero-dark{
  background-image:
    radial-gradient(900px 520px at 12% -10%,rgba(0,178,237,.34),transparent 62%),
    radial-gradient(820px 520px at 88% 4%,rgba(87,64,255,.42),transparent 64%),
    linear-gradient(158deg,rgba(8,12,20,.88) 0%,rgba(11,23,48,.84) 56%,rgba(26,17,64,.88) 100%),
    url("/assets/img/hero-bg.webp");
  background-size:auto,auto,auto,cover;
  background-position:center,center,center,center;
  background-repeat:no-repeat;
}

/* ══════════════════════════════════════════════════════════════
   ③ 控制台界面示意图（替代 A2–A4 真实截图，零素材依赖）
   ══════════════════════════════════════════════════════════════ */
.mini{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;
  box-shadow:0 2px 6px rgba(21,94,239,.06),0 22px 48px -30px rgba(87,64,255,.5);
  height:100%;display:flex;flex-direction:column;
}
.mini-top{
  display:flex;align-items:center;gap:8px;padding:10px 13px;font-size:.78rem;font-weight:600;color:var(--txt-2);
  background:linear-gradient(180deg,#F7FAFF,#F1F6FF);border-bottom:1px solid var(--line);
}
.mini-dots{display:flex;gap:4px}
.mini-dots i{width:7px;height:7px;border-radius:50%;background:#D6E2F5;display:block}
.mini-body{padding:12px 13px;display:grid;gap:8px;font-size:.78rem;color:var(--txt-2);flex:1}
.mini-row{display:grid;grid-template-columns:1.5fr 1fr .9fr;gap:8px;align-items:center}
.mini-row.mini-head{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--txt-3);
  padding-bottom:7px;border-bottom:1px solid var(--line);
}
.mini-row b{display:block;color:var(--txt);font-weight:600;font-size:.8rem}
.mini-row em{font-style:normal;font-family:var(--mono);font-size:.68rem;color:var(--txt-3)}
.mini-row > span:last-child{text-align:right}
.mini-pill{
  justify-self:end;font-size:.68rem;font-weight:600;padding:2px 8px;border-radius:999px;
  border:1px solid transparent;white-space:nowrap;
}
.mini-pill.ok{background:var(--ok-bg);color:var(--ok);border-color:#BBF7D0}
.mini-pill.off{background:var(--off-bg);color:var(--off);border-color:var(--line)}
.mini-on,.mini-off{
  justify-self:center;width:32px;height:18px;border-radius:999px;position:relative;display:block;
}
.mini-on{background:var(--brand-ui)}
.mini-off{background:#D6E2F5}
.mini-on::after,.mini-off::after{
  content:"";position:absolute;top:2px;width:14px;height:14px;border-radius:50%;background:#fff;
}
.mini-on::after{right:2px}
.mini-off::after{left:2px}
.mini-fields{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.mini-fields label{
  border:1px solid var(--line);border-radius:9px;padding:7px 9px;background:var(--tint);
  font-size:.7rem;color:var(--txt-3);display:block;
}
.mini-fields label em{display:block;font-style:normal;color:var(--blue);font-weight:600;font-size:.78rem;margin-top:2px}
.mini-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.mini-tags span{
  font-size:.68rem;color:var(--blue);background:var(--primary-bg);border:1px solid #CFE0FF;
  border-radius:999px;padding:2px 9px;
}
.mini-cap{font-size:.76rem;color:var(--txt-3);text-align:center;margin:10px 0 0}
/* 示意图格子：.mini 的 height:100% 会把图注顶出格子（手机上被下一张图盖住），改成 flex 自适应 */
.mini-cell{display:flex;flex-direction:column}
.mini-cell .mini{height:auto;flex:1 1 auto}

/* 防回归：图标容器一律不被同级的 span 文本规则影响（band-ico 已改用 div，这里再兜一层） */
.band-inner .band-ico{display:flex;align-items:center;justify-content:center}

/* ── 示意图全宽展示（原来塞在分栏里，缩得太小看不清）── */
.diagram-wide{max-width:980px;margin:0 auto}
.diagram-wide .diagram{max-width:100%}
.diagram text{font-size:16px}
.diagram .d-t{font-size:16px}
.diagram .d-t-l{font-size:16.5px}
.diagram .d-s{font-size:13.5px}
.diagram .d-chipt,.diagram .d-chipt-a{font-size:13px}

/* ── Hero 手机框（用于放真实界面截图；替换 HERO_PHONE_IMG 为空即回退示意窗口）── */
.phone-frame{
  position:relative;margin:0 auto;height:min(640px,66vh);aspect-ratio:1170/2532;width:auto;
  border:9px solid #0B1730;border-radius:40px;overflow:hidden;background:#0B1730;
  box-shadow:0 50px 100px -45px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.14) inset;
}
.phone-frame::after{ /* 听筒装饰 */
  content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);
  width:74px;height:6px;border-radius:999px;background:rgba(255,255,255,.22);
}
.phone-frame img{width:100%;height:100%;object-fit:cover;display:block}
@media (max-width:980px){.phone-frame{height:min(520px,58vh)}}

/* 窄屏下示意图保持可读尺寸并横向滚动（否则缩到 375px 宽会看不清） */
@media (max-width:820px){
  .diagram-wide{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .diagram-wide .diagram{min-width:640px}
}

/* ══════════════════════════════════════════════════════════════
   ① 数据带改浅色（原来深色与上下内容接不上）
   ══════════════════════════════════════════════════════════════ */
.band{
  background:linear-gradient(180deg,var(--tint-1),#fff);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.band::before{background:linear-gradient(90deg,rgba(14,116,144,.5),rgba(87,64,255,.5));opacity:.55}
.band-inner{border-color:var(--line)}
.band-inner > div{border-left-color:var(--line)}
.band-ico{box-shadow:0 10px 22px -14px rgba(21,94,239,.8)}
.band-inner b{
  background-image:linear-gradient(120deg,#155EEF 0%,#4F35F0 55%,#7C50F5 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.band-inner span{color:var(--txt)}
.band-inner small{color:var(--txt-3)}

/* ══════════════════════════════════════════════════════════════
   ② 双列紧凑行：把"7 个场景""扩展维度"这类列表高度砍一半
   ══════════════════════════════════════════════════════════════ */
.rows.compact{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 clamp(24px,3vw,44px);border-top:1px solid var(--line);
}
.rows.compact > li{
  grid-template-columns:38px minmax(0,1fr);gap:14px;
  padding:15px 4px;align-items:start;
}
.rows.compact .rows-no{font-size:.72rem;padding-top:.25em}
.rows.compact h3{font-size:.97rem;margin-bottom:.22em}
.rows.compact p{font-size:.87rem;line-height:1.6}
.rows.compact .rows-kw{grid-column:2;text-align:left;margin-top:7px;font-size:.78rem;line-height:1.6}
.rows.compact .rows-kw span{margin:0 6px 0 0;padding:2px 9px}
@media (max-width:760px){
  .rows.compact{grid-template-columns:1fr;gap:0}
}

/* ══════════════════════════════════════════════════════════════
   ③ 示意图收窄（配合更紧凑的 viewBox，整体高度下降约 45%）
   ══════════════════════════════════════════════════════════════ */
.diagram-wide{max-width:900px;margin:0 auto}
/* 紧凑行再收一档：文案单行 + 更小内边距 */
.rows.compact > li{padding:12px 4px}
.rows.compact .rows-kw{margin-top:5px}
/* 紧凑行终极版：关键词芯片移到标题行右侧（三栏），行高从 115px 降到 ~76px */
.rows.compact > li{grid-template-columns:38px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 4px}
.rows.compact .rows-kw{grid-column:3;grid-row:1;text-align:right;margin:0;white-space:nowrap}
@media (max-width:1080px){
  .rows.compact > li{grid-template-columns:34px minmax(0,1fr)}
  .rows.compact .rows-kw{grid-column:2;grid-row:auto;text-align:left;margin-top:5px;white-space:normal}
}
/* 扩展维度：三列（文案短，三列更紧凑） */
@media (min-width:1081px){
  .rows.compact.three{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 clamp(20px,2.4vw,34px)}
  .rows.compact.three > li{grid-template-columns:34px minmax(0,1fr);gap:11px}
  .rows.compact.three .rows-kw{grid-column:2;grid-row:auto;text-align:left;margin-top:4px}
  .rows.compact.three p{font-size:.84rem}
}
.diagram-wide{max-width:840px}

/* ══════════════════════════════════════════════════════════════
   胶囊/标签垂直居中修复
   原因：flex 行默认 align-items:stretch，同行有换行胶囊时会把其它胶囊拉高，
        文字因此贴在顶部（实测 32.9px 胶囊里文字只占 16px，上 4px / 下 12.9px）
   做法：容器 align-items:center + 胶囊内禁止换行（整颗胶囊参与换行）
   ══════════════════════════════════════════════════════════════ */
.mini-tags{align-items:center}
.mini-tags span{white-space:nowrap;line-height:1.5;padding:4px 10px;display:inline-flex;align-items:center}
.tag-row,.kw-row,.rows-kw{align-items:center}
.tag,.kw,.rows-kw span,.mini-pill{white-space:nowrap}
.tag,.kw{display:inline-flex;align-items:center;line-height:1.5}
.rows-kw span{display:inline-flex;align-items:center;line-height:1.5}

/* 卡片内行被拉伸（grid auto 行默认 stretch）→ 行高按内容，整块垂直居中 */
.mini-body{align-content:center}
.sc-main{align-content:start}

/* ── 内容照片（替代原虚线素材位）── */
.photo{
  margin:28px 0 0;border-radius:18px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-hi);background:var(--tint-1);
}
.photo img{display:block;width:100%;height:auto;object-fit:cover}
.photo + .strip{margin-top:22px}

/* ══════════════════════════════════════════════════════════════
   照片作为已有区块的背景（高度零增长，避免独立图片块突兀又占高）
   ══════════════════════════════════════════════════════════════ */
.has-photo{background-size:cover;background-position:center;background-repeat:no-repeat}
/* 数据带变为照片背景时，文字与数字改用深色底上的配色 */
.band.has-photo{border-color:rgba(255,255,255,.14)}
.band.has-photo .band-inner > div{border-left-color:rgba(255,255,255,.16)}
.band.has-photo .band-inner b{
  background-image:linear-gradient(120deg,#7FE7FF 0%,#9DB9FF 52%,#C9AEFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.band.has-photo .band-inner span{color:#fff}
.band.has-photo .band-inner small{color:rgba(255,255,255,.62)}
.band.has-photo .band-ico{border:1px solid rgba(255,255,255,.18)}
.statement.has-photo{padding:clamp(34px,4.6vw,54px)}
.statement.has-photo::after{opacity:.28}   /* 照片背景上减弱装饰光晕 */

/* ── 轨道（rail）与紧随其后的区块之间必须有留白：照片背景块紧贴文字会非常局促 ── */
.rail + *{margin-top:clamp(28px,3.6vw,44px)}
.statement{margin-top:clamp(30px,4vw,46px)}
.statement:first-child{margin-top:0}
/* 其它常见"贴死"组合也一并兜底 */
.rows + .statement,.matrix + .statement,.strip + .statement{margin-top:clamp(30px,4vw,46px)}

/* ── 微信二维码卡：二维码必须在浅底 + 留白里才扫得出来（深色页脚上尤其重要）── */
.qr-card{
  width:138px;aspect-ratio:1;margin:14px 0 0;border-radius:14px;background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  box-shadow:0 10px 26px -14px rgba(0,0,0,.6);
}
.qr-card img{width:100%;height:100%;object-fit:contain;border-radius:14px}
.qr-card.pending{border:1.5px dashed rgba(21,94,239,.45);background:linear-gradient(160deg,#F0F7FF,#EFEBFF);color:var(--blue)}
.qr-card.pending span{font-size:.78rem;font-weight:600}
.qr-card.pending small{font-family:var(--mono);font-size:.64rem;color:var(--txt-3);text-align:center;line-height:1.5;padding:0 8px}
.qr-cap{margin:8px 0 0;font-size:.78rem;color:var(--txt-3)}
.site-footer .qr-cap{color:rgba(255,255,255,.6)}

/* ── 联系页三张卡：等高等宽、内容与按钮对齐 ── */
.contact-cards{align-items:stretch}
.contact-cards .panel{display:flex;flex-direction:column;height:100%}
.contact-val{
  margin:0 0 8px;font-size:1.15rem;font-weight:600;color:var(--txt);
  word-break:break-all;                 /* 邮箱/手机号较长时避免撑破卡片 */
}
.contact-note{margin:0 0 4px;font-size:.92rem}
.contact-cards .cta-row{margin-top:auto;padding-top:16px}   /* 按钮沉到卡片底部并横向对齐 */
.contact-qr{margin-top:auto;padding-top:16px}               /* 二维码也沉到底部 */
.contact-qr .qr-card{margin-left:0}
@media (max-width:820px){
  .contact-cards .cta-row{padding-top:14px}
}

/* 页脚品牌锁定（图标 + 文字） */
.brand-lockup{display:flex;align-items:center;gap:10px;margin-bottom:.5em}
.brand-lockup .brand-text.lg{margin-bottom:0}

/* ── 图文并置（如「四步闭环」左侧步骤 + 右侧实拍图）── */
.split-2col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:center}
.steps-vert{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.steps-vert li{display:grid;grid-template-columns:40px minmax(0,1fr);gap:14px;padding:16px 0;margin:0;border-bottom:1px solid var(--line)}
.steps-vert span{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;color:var(--cyan);padding-top:.35em}
.steps-vert b{display:block;color:var(--txt);font-size:1.02rem;margin-bottom:.15em}
.steps-vert p{margin:0;font-size:.9rem}
.steps-media{min-width:0}
.photo.photo-side{margin:0;border-radius:16px}
.photo.photo-side img{aspect-ratio:auto}
.steps-media .asset-slot{min-height:220px}
@media (max-width:900px){
  .split-2col{grid-template-columns:1fr;gap:26px}
}

/* ══════════════════════════════════════════════════════════════
   ① 四步闭环右侧：代码绘制的"每一步界面证据"（零图片素材）
   ══════════════════════════════════════════════════════════════ */
.flowvis{position:relative;list-style:none;margin:0;padding:0 0 0 38px;display:grid;gap:12px}
.flowvis::before{
  content:"";position:absolute;left:13px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(0,178,237,.6),rgba(87,64,255,.6));
}
.flowvis > li{position:relative;margin:0}
.fv-dot{
  position:absolute;left:-38px;top:6px;width:28px;height:28px;border-radius:50%;background:#fff;
  border:2px solid rgba(29,78,216,.45);display:grid;place-items:center;
  font-family:var(--mono);font-size:.62rem;color:var(--blue);
}
.fv-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:12px 14px}
.fv-label{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--txt-3);margin-bottom:9px}
.fv-card .msg{margin:0}
.fv-card .bubble{max-width:100%;font-size:.84rem}
.fv-chips{display:flex;flex-wrap:wrap;gap:6px}
.fv-chips span{
  font-size:.72rem;color:var(--txt-2);border:1px solid var(--line);border-radius:999px;padding:3px 10px;
  background:var(--surface-2);white-space:nowrap;
}
.fv-chips span.on{color:#fff;background:var(--brand-ui);border-color:transparent;font-weight:600}
.fv-hit{border:1px solid #CFE0FF;background:var(--primary-bg);border-radius:10px;padding:9px 11px}
.fv-hit b{display:block;font-size:.8rem;color:var(--blue)}
.fv-hit small{font-size:.72rem;color:var(--txt-2)}
.fv-rec{
  margin-top:9px;font-size:.74rem;color:#0F766E;background:var(--ok-bg);
  border:1px solid #BBF7D0;border-radius:999px;padding:3px 11px;display:inline-block;
}

/* ══════════════════════════════════════════════════════════════
   ② 常见问题两列（回收约 250px 高度）
   ══════════════════════════════════════════════════════════════ */
.faq-2col{grid-template-columns:repeat(2,minmax(0,1fr));max-width:none;gap:12px 18px}
@media (max-width:900px){.faq-2col{grid-template-columns:1fr}}
/* 四步视觉略收紧（卡片间距与内边距） */
.flowvis{gap:10px}
.fv-card{padding:11px 13px}
.fv-label{margin-bottom:7px}

/* ══════════════════════════════════════════════════════════════
   能力矩阵 16 项：首项「长期记忆」做重点项
   PC（>1200px）：记忆单独占第一列，纵向跨满整个能力墙
                  6 列网格 = 记忆 1 列（跨 3 行）+ 其余 15 项排 5 列 × 3 行
   3 列（621–980px）：记忆独占第一行整行（跨 3），其余 15 项 5 行 × 3 列
   4 列（981–1200px）/ 2 列（≤620px）：16 项本身整除，记忆只做高亮的首格
   ⚠️ 增删能力项后要重算两处：跨行数 = 15 ÷ (列数 − 1) 必须整除；
      不能整除时改成"独占整行"（跨满列数）而不是硬跨列，否则露出网格底色
   ══════════════════════════════════════════════════════════════ */
.tilewall .tile.lead{
  position:relative;
  background:linear-gradient(150deg,rgba(0,178,237,.14),rgba(87,64,255,.14));
}
.tilewall .tile.lead::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-ui);
}
.tilewall .tile.lead h3{font-size:1.1rem}
.tilewall .tile.lead h3::after{content:" →";color:var(--blue);font-weight:600}
.tilewall .tile.lead p{font-size:.88rem;max-width:none}
.tilewall .tile.lead .tile-ico{width:48px;height:48px;border-radius:14px;margin-bottom:14px}
.tilewall .tile.lead .tile-ico .ico{width:25px;height:25px}
.tilewall .tile-badge{
  display:inline-block;margin:4px 0 9px;
  font-size:.66rem;font-weight:600;letter-spacing:.08em;color:#fff;
  background:var(--brand-ui);border-radius:999px;padding:2px 10px;
}
@media (hover:hover){
  .tilewall .tile.lead:hover{background:linear-gradient(150deg,rgba(0,178,237,.2),rgba(87,64,255,.2))}
}
/* PC：单独占一列，跨满整个能力墙的高度（行数由其余 15 项决定 = 3 行） */
@media (min-width:1201px){
  /* 6 列：记忆列比其余列宽 15%，视觉上明确压过普通能力格 */
  .tilewall{grid-template-columns:1.15fr repeat(5,minmax(0,1fr))}
  .tilewall .tile.lead{
    grid-column:1;grid-row:span 3;
    display:flex;flex-direction:column;justify-content:center;align-items:flex-start;
    padding:28px 22px;
  }
  .tilewall .tile.lead .tile-ico{width:54px;height:54px;border-radius:16px;margin-bottom:16px}
  .tilewall .tile.lead .tile-ico .ico{width:28px;height:28px}
  .tilewall .tile.lead h3{font-size:1.16rem}
}
/* 3 列：首项独占第一行（此时其余 15 项正好排满 5 行 × 3 列） */
@media (min-width:621px) and (max-width:980px){
  .tilewall .tile.lead{grid-column:span 3}
}