/* ============================================================
   闪电云官网设计系统 —— 浅色·蓝色科技风(基于 ui-kit 设计令牌)
   依赖:design-tokens.css(需在本文件之前引入)
   适配:1440px 桌面 / 900px 平板 / 390px 手机
   说明:保留全部既有类名与 JS 钩子(.nav/.scrolled、#navLinks/.open、
        .faq-q/.open、.reveal/.in、.year、.toast/.show)
   ============================================================ */

:root{
  /* 旧变量名向新设计令牌的映射(供子页面内联样式与渐变文字复用) */
  --grad:var(--grad-text);                       /* 品牌渐变文字 */
  --grad-soft:linear-gradient(135deg,rgba(37,99,235,.08),rgba(14,165,233,.08));
  --green:var(--success);
  --red:var(--danger);
  --amber:var(--warning);
  --cyan:var(--accent);
  --indigo:var(--primary);
  --violet:var(--primary);
  --teal:var(--accent);
  --panel:#ffffff;
  --glow:var(--shadow-hover);
  --border-strong:#cbd5e1;
  --radius:16px;
  --radius-sm:10px;
  --mono:var(--font-mono);
  --font:var(--font-sans);
  --shadow-card:var(--shadow-card);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--primary-light)}

/* ---------- 布局容器 ---------- */
.container{max-width:1180px;margin:0 auto;padding:0 28px}
/* 网格项默认允许收缩到 0,防止内部 min-content 在窄屏撑破容器 */
.features-grid>*,.advice-grid>*,.portal-grid>*,.industry-wall>*,.news-layout>*{min-width:0}

/* ---------- 顶部导航(毛玻璃吸顶) ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;transition:all .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:1180px;margin:0 auto;padding:0 28px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:.5px;color:var(--text)}
.logo-mark{width:38px;height:38px;display:flex;align-items:center;justify-content:center;color:#fff}
.logo-mark img{width:100%;height:100%;border-radius:inherit;object-fit:cover;display:block}
.logo em{font-style:normal;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:20px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--text-2);font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover{color:var(--primary)}
/* 顶部下划线动效仅作用于一级分类链接,下拉面板内不显示 */
.nav-links .nav-top::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad-primary);border-radius:2px;transition:width .25s}
.nav-links .nav-top:hover::after,.nav-links .nav-top.active-parent::after{width:100%}
/* 当前所在页面的一级/父级分类高亮 */
.nav-links .nav-top.active,.nav-links .nav-top.active-parent{color:var(--primary)}

/* ---------- 分类下拉导航(hover 自动展开,参考云厂商顶部导航) ---------- */
.nav-item{position:relative;display:flex;align-items:center}
.nav-top-row{display:flex;align-items:center;gap:2px;height:72px}
.nav-top-row>.nav-top{padding:0 2px}
/* 分类右侧小箭头:CSS 三角实现,展开时翻转 */
.nav-caret{width:20px;height:20px;padding:0;border:none;background:transparent;position:relative;cursor:pointer;flex:none}
.nav-caret::after{content:"";position:absolute;left:50%;top:44%;width:6px;height:6px;border-right:1.6px solid var(--text-3);border-bottom:1.6px solid var(--text-3);transform:translate(-50%,-50%) rotate(45deg);transition:transform .2s,border-color .2s}
.nav-item:hover .nav-caret::after,.nav-item.hover .nav-caret::after,.nav-item:focus-within .nav-caret::after,.nav-item.expanded .nav-caret::after{border-color:var(--primary);transform:translate(-50%,-62%) rotate(225deg)}
/* 下拉面板:默认隐藏,桌面端由 :hover/.expanded 唤起;顶部留 10px 桥接区,
   鼠标从分类移向面板时不会因间隙断开悬停 */
.nav-sub{position:absolute;top:100%;left:50%;min-width:158px;transform:translateX(-50%) translateY(8px);background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-3d);padding:8px;display:flex;flex-direction:column;gap:2px;visibility:hidden;opacity:0;transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:120}
.nav-sub::before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.nav-sub a{font-size:14px;font-weight:500;color:var(--text-2);padding:9px 14px;border-radius:9px;white-space:nowrap;transition:background .15s,color .15s}
.nav-sub a:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-sub a.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
/* 桌面端(>960px)悬停/键盘聚焦/点击箭头均可唤起面板;
   .hover 由 JS mouseenter 兜底,兼容合成事件与触屏笔记本 */
@media(min-width:961px){
  .nav-item:hover>.nav-sub,.nav-item.hover>.nav-sub,.nav-item:focus-within>.nav-sub,.nav-item.expanded>.nav-sub{visibility:visible;opacity:1;transform:translateX(-50%) translateY(0)}
}
.nav-actions{display:flex;gap:12px;align-items:center}
.menu-toggle{display:none;padding:6px}
.menu-toggle svg{width:26px;height:26px;color:var(--text)}

/* ---------- 按钮体系 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 24px;border-radius:10px;font-size:14.5px;font-weight:600;transition:all .25s;white-space:nowrap;cursor:pointer}
.btn-primary{background:var(--grad-primary);color:#fff;box-shadow:var(--shadow-3d);position:relative;overflow:hidden}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow-blue-strong);color:#fff}
/* 主按钮悬停时一道斜向高光扫过 */
.btn-primary::after{content:"";position:absolute;top:0;bottom:0;left:0;width:45%;background:linear-gradient(110deg,transparent,rgba(255,255,255,.38),transparent);transform:translateX(-230%) skewX(-18deg);pointer-events:none}
.btn-primary:hover::after{transition:transform .7s ease;transform:translateX(370%) skewX(-18deg)}
.btn-outline{border:1.5px solid var(--primary);color:var(--primary);background:#fff}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-ghost{color:var(--text-2);font-weight:500}
.btn-ghost:hover{color:var(--primary);background:var(--primary-light)}
.btn-lg{padding:15px 34px;font-size:16px;border-radius:12px}

/* ---------- Hero 区(浅色渐变舞台+光斑+网格) ---------- */
.hero{position:relative;padding:128px 0 56px;overflow:hidden;background:var(--grad-hero)}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(700px 340px at 18% 8%,rgba(59,130,246,.16),transparent 65%),
  radial-gradient(800px 420px at 85% 28%,rgba(14,165,233,.14),transparent 65%),
  radial-gradient(500px 300px at 55% 95%,rgba(37,99,235,.08),transparent 60%);pointer-events:none;animation:heroOrbs 24s ease-in-out infinite alternate}
.hero::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 75% 62% at 50% 38%,#000 30%,transparent 72%);
  mask-image:radial-gradient(ellipse 75% 62% at 50% 38%,#000 30%,transparent 72%);pointer-events:none;animation:heroGrid 32s linear infinite}
/* 光斑缓慢漂移(位移+轻微缩放),网格按整格平移保证无缝循环 */
@keyframes heroOrbs{0%{transform:translate3d(-1.6%,-1%,0) scale(1)}100%{transform:translate3d(1.6%,1.4%,0) scale(1.08)}}
@keyframes heroGrid{0%{background-position:0 0,0 0}100%{background-position:56px 56px,56px 56px}}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border:1px solid var(--border);background:rgba(255,255,255,.7);backdrop-filter:blur(8px);border-radius:999px;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:26px;box-shadow:var(--shadow-sm)}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(22,163,74,.5);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.45}}
.hero h1{font-size:50px;line-height:1.14;font-weight:800;letter-spacing:-1.2px;margin-bottom:18px;color:var(--text)}
.hero h1 .grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:17px;color:var(--text-2);max-width:660px;margin-bottom:30px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:52px;flex-wrap:wrap}
.hstat .num{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat .lbl{font-size:13px;color:var(--text-3);margin-top:2px}

/* ---------- 通用区块 ---------- */
section{padding:56px 0;position:relative}
.section-head{text-align:center;max-width:700px;margin:0 auto 34px}
.section-head .tag{display:inline-block;padding:4px 14px;border-radius:999px;border:1px solid rgba(37,99,235,.25);background:var(--primary-light);color:var(--primary-dark);font-weight:600;font-size:13px;margin-bottom:12px;letter-spacing:.5px}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.6px;margin-bottom:10px;color:var(--text)}
.section-head p{color:var(--text-2);font-size:15px}
/* 合并区块内的次级标题组:与上方网格保持紧凑间距 */
.section-head.sub{margin-top:40px}

/* ---------- 卡片(白色浮层) ---------- */
.glass{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}

/* ---------- 特性网格 ---------- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{padding:22px 20px;transition:all .3s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;inset:0;background:radial-gradient(360px 180px at 20% 0%,rgba(37,99,235,.07),transparent 70%);opacity:0;transition:opacity .3s}
.feature-card:hover{transform:translateY(-6px);border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover)}
.feature-card:hover::before{opacity:1}
/* 悬停斜向扫光(参考组件库福利卡片,浅色化为淡蓝光条) */
.feature-card::after{content:"";position:absolute;top:-15%;left:-60%;width:42%;height:130%;background:linear-gradient(100deg,transparent,rgba(37,99,235,.08),transparent);transform:skewX(-18deg);transition:left .65s ease;pointer-events:none;z-index:0}
.feature-card:hover::after{left:130%}
.feature-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);border:1px solid rgba(37,99,235,.2);display:flex;align-items:center;justify-content:center;margin-bottom:13px;color:var(--primary);position:relative}
.feature-icon svg{width:22px;height:22px}
.feature-card h3{font-size:16px;font-weight:700;margin-bottom:6px;position:relative;color:var(--text)}
.feature-card p{font-size:13.5px;color:var(--text-2);position:relative}

/* ---------- 建议卡(四卡一行高密度) ---------- */
.advice-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.advice-card{padding:18px 18px 16px;transition:all .3s;display:flex;flex-direction:column;position:relative;overflow:hidden}
.advice-card:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
/* 悬停斜向扫光,与特性卡同一节奏 */
.advice-card::after{content:"";position:absolute;top:-15%;left:-60%;width:42%;height:130%;background:linear-gradient(100deg,transparent,rgba(37,99,235,.08),transparent);transform:skewX(-18deg);transition:left .65s ease;pointer-events:none;z-index:0}
.advice-card:hover::after{left:130%}
.advice-card .num{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--primary);margin-bottom:8px;letter-spacing:1px}
.advice-card h3{font-size:14.5px;font-weight:700;margin-bottom:6px;color:var(--text);line-height:1.45}
.advice-card p{font-size:12.5px;color:var(--text-2);line-height:1.7}

/* ---------- 分销计划 ---------- */
.agent-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}
.step{padding:20px 18px;position:relative;transition:all .3s}
.step:hover{transform:translateY(-4px);border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover)}
.step .step-num{width:34px;height:34px;border-radius:10px;background:var(--grad-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;margin-bottom:12px;box-shadow:var(--shadow-3d)}
.step h4{font-size:15px;font-weight:700;margin-bottom:5px;color:var(--text)}
.step p{font-size:13px;color:var(--text-2)}
.agent-perks{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.perk{display:flex;align-items:center;gap:11px;padding:11px 16px;font-size:13.5px;font-weight:500;transition:all .25s;color:var(--text-2)}
.perk:hover{border-color:rgba(22,163,74,.4);color:var(--text)}
.perk svg{width:18px;height:18px;color:var(--success);flex-shrink:0}
.center-cta{text-align:center;margin-top:30px}

/* ---------- 覆盖统计(四卡一行,三层信息) ---------- */
.coverage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cov-card{text-align:center;padding:20px 16px 18px;transition:all .3s}
.cov-card:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.cov-card .big{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1;margin-bottom:6px}
.cov-card .label{font-size:13px;color:var(--text);font-weight:600;margin-bottom:6px}
.cov-card .meta{font-size:11.5px;color:var(--text-3);line-height:1.6;padding-top:8px;border-top:1px dashed var(--border)}

/* ---------- 企业信息(三卡一行) ---------- */
.company-box{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.company-item{padding:18px 20px;transition:all .3s}
.company-item:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover)}
.company-item h4{font-size:14.5px;font-weight:700;margin-bottom:8px;color:var(--text)}
.company-item h4::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--primary);margin-right:8px;vertical-align:2px}
.company-item p{font-size:13px;font-weight:500;color:var(--text-2);line-height:1.75;margin-bottom:8px}
.company-item .ci-note{display:block;font-size:11.5px;color:var(--text-3);padding-top:8px;border-top:1px dashed var(--border);line-height:1.6}

/* ---------- 教程入口(五卡一行) ---------- */
.guides-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.guide-card{padding:16px 14px;cursor:pointer;transition:all .3s;display:flex;flex-direction:column}
.guide-card:hover{transform:translateY(-4px);border-color:rgba(37,99,235,.4);box-shadow:var(--shadow-hover)}
.guide-card .g-num{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--primary);margin-bottom:9px;letter-spacing:1px}
.guide-card h4{font-size:13.5px;font-weight:700;margin-bottom:6px;line-height:1.5;color:var(--text)}
.guide-card p{font-size:12px;color:var(--text-2);line-height:1.6;margin-top:auto}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{margin-bottom:10px;overflow:hidden;transition:all .3s}
.faq-item.open{border-color:rgba(37,99,235,.45);box-shadow:var(--shadow-hover)}
.faq-q{padding:15px 22px;display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;font-weight:600;font-size:14.5px;color:var(--text)}
.faq-q .arrow{color:var(--text-3);transition:transform .25s;flex-shrink:0;font-size:12px}
.faq-item.open .arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;padding:0 22px;color:var(--text-2);font-size:13.5px}
.faq-item.open .faq-a{max-height:320px;padding-bottom:16px}

/* ---------- 联系我们(三卡一行,信息分层) ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.contact-card{padding:20px 22px;transition:all .3s;display:flex;flex-direction:column}
.contact-card:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.contact-card .c-icon{width:42px;height:42px;border-radius:12px;background:var(--primary-light);border:1px solid rgba(37,99,235,.2);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.contact-card h4{font-size:15px;font-weight:700;margin-bottom:6px;color:var(--text)}
.contact-card .c-main{font-size:14px;font-weight:700;color:var(--primary-dark);font-variant-numeric:tabular-nums;margin-bottom:4px}
.contact-card .c-sub{font-size:12px;color:var(--text-3);line-height:1.7;margin-top:auto;padding-top:10px}

/* ---------- 页脚(深蓝·网格背景) ---------- */
footer{border-top:1px solid var(--border);background:var(--sidebar-bg);padding:42px 0 24px;margin-top:20px;position:relative;overflow:hidden}
footer::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.06) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:26px}
.footer-brand .logo{color:#fff}
.footer-brand p{font-size:13px;color:#94a3b8;max-width:300px;margin-top:10px}
.footer-col h5{font-size:13.5px;font-weight:700;margin-bottom:12px;letter-spacing:.5px;color:#fff}
.footer-col a{display:block;font-size:13px;color:#94a3b8;margin-bottom:8px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(148,163,184,.15);padding-top:18px;font-size:12.5px;color:#94a3b8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-bottom a:hover{color:#fff}

/* ---------- 子页面通用页头 ---------- */
.page-hero h1{color:var(--text)}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:34px;left:50%;transform:translateX(-50%) translateY(120px);background:#0f172a;border:1px solid rgba(148,163,184,.2);backdrop-filter:blur(12px);color:#fff;padding:13px 26px;border-radius:12px;font-size:14px;z-index:999;opacity:0;transition:all .3s;pointer-events:none;box-shadow:var(--shadow)}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:all .7s cubic-bezier(.22,.68,.36,1)}
.reveal:not(.in){transition-delay:var(--d,0ms)}
.reveal.in{opacity:1;transform:translateY(0)}

/* ============================================================
   全站动效增强(纯 CSS + www.js,零依赖,自动作用于各营销页面)
   ============================================================ */

/* 首屏入场:首页 Hero 元素自上而下错峰淡入上移 */
@keyframes heroIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
.hero .container>*{opacity:0;animation:heroIn .8s cubic-bezier(.22,.68,.36,1) both}
.hero .container>*:nth-child(1){animation-delay:.05s}
.hero .container>*:nth-child(2){animation-delay:.15s}
.hero .container>*:nth-child(3){animation-delay:.25s}
.hero .container>*:nth-child(4){animation-delay:.35s}
.hero .container>*:nth-child(5){animation-delay:.45s}
.hero .container>*:nth-child(6){animation-delay:.55s}
/* 内页页头(产品优势/API 等页)整体轻量入场 */
.page-hero,.check-hero{animation:heroIn .6s cubic-bezier(.22,.68,.36,1) both}

/* 滚动瀑布入场:JS 为营销网格的子元素自动添加 .rv,
   进入视口后加 .rv-in;--d 为同组内的错峰延迟,仅在入场阶段生效,
   不影响卡片后续 hover 抬起的响应速度 */
.rv{opacity:0;transform:translateY(24px);transition:opacity .65s cubic-bezier(.22,.68,.36,1),transform .65s cubic-bezier(.22,.68,.36,1)}
.rv:not(.rv-in){transition-delay:var(--d,0ms)}
.rv-in{opacity:1;transform:none}

/* 顶部阅读进度条(JS 注入):吸顶导航之上 3px 渐变细条 */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:200;pointer-events:none}
.scroll-progress i{display:block;height:100%;width:100%;background:var(--grad-primary);transform-origin:0 50%;transform:scaleX(0);box-shadow:0 0 8px rgba(37,99,235,.45)}

/* 用户系统设置"减弱动态效果"时:关闭装饰动画、所有内容直接可见 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero::before,.hero::after,.hero-badge .dot{animation:none!important}
  .hero-visual::before,.hero-visual::after,.hv-spark,.cta-box::after{animation:none!important}
  .hero-visual::after{display:none}
  .hv-browser{animation:none}
  .hero .container>*,.page-hero,.check-hero{opacity:1!important;animation:none!important}
  .reveal,.rv{opacity:1!important;transform:none!important;transition:none!important}
  .feature-card::after,.advice-card::after{transition:none}
  .btn-primary::after{display:none}
}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;max-height:calc(100vh - 72px);overflow-y:auto;background:rgba(255,255,255,.96);backdrop-filter:blur(20px);flex-direction:column;align-items:stretch;padding:18px 28px 26px;border-bottom:1px solid var(--border);gap:6px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  /* 移动端:分类项纵向铺开,箭头按钮承担展开/收起,标题文字仍可直达主页 */
  .nav-item{flex-direction:column;align-items:stretch}
  .nav-top-row{height:auto;justify-content:space-between;padding:8px 0}
  .nav-top-row>.nav-top{font-size:16px}
  .nav-sub{position:static;transform:none;min-width:0;visibility:visible;opacity:1;display:none;box-shadow:none;border:none;background:transparent;border-radius:0;padding:2px 0 6px 14px;margin-left:4px;border-left:2px solid var(--border)}
  .nav-sub::before{display:none}
  .nav-item.expanded>.nav-sub{display:flex}
  .nav-sub a{font-size:14.5px;padding:8px 12px;white-space:normal}
  /* 无下拉的普通一级项保持与分组标题同节奏 */
  .nav-item>.nav-top{padding:8px 0;font-size:16px}
  .menu-toggle{display:block}
  .hero{padding-top:104px}
  .hero h1{font-size:36px}
  .features-grid{grid-template-columns:1fr 1fr}
  .advice-grid{grid-template-columns:1fr 1fr}
  .agent-steps{grid-template-columns:1fr 1fr}
  .agent-perks{grid-template-columns:1fr 1fr}
  .coverage-grid{grid-template-columns:1fr 1fr}
  .company-box{grid-template-columns:1fr;gap:18px}
  .guides-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .section-head h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .container{padding:0 20px}
  .hero h1{font-size:30px}
  .hero-stats{gap:28px}
  section{padding:42px 0}
  .features-grid,.advice-grid,.agent-steps,.agent-perks,.coverage-grid,.guides-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* ============================================================
   新增视觉增强块(Hero mockup / 深色流程 / 协议对比 / CTA)
   ============================================================ */

/* ---------- Hero 产品 mockup ---------- */
.hero-visual{margin-top:48px;position:relative;z-index:2}
/* Hero 预览窗环绕光轨(参考组件库 conic 光环,浅色化):
   外层实色光弧顺时针旋转,虚线轨道反向旋转,均压在浏览器窗口下层只露边缘 */
.hero-visual::before,.hero-visual::after{content:"";position:absolute;left:5%;right:5%;top:-2%;bottom:-12%;border-radius:50%;pointer-events:none;z-index:0}
.hero-visual::before{background:conic-gradient(from 0deg,transparent 0 60deg,rgba(37,99,235,.5) 115deg,transparent 175deg 245deg,rgba(14,165,233,.45) 300deg,transparent 350deg);-webkit-mask:radial-gradient(closest-side,transparent 64%,#000 67% 74%,transparent 77%);mask:radial-gradient(closest-side,transparent 64%,#000 67% 74%,transparent 77%);animation:hvOrbit 14s linear infinite}
.hero-visual::after{border:1.5px dashed rgba(37,99,235,.28);-webkit-mask:none;mask:none;animation:hvOrbit 24s linear infinite reverse}
@keyframes hvOrbit{to{transform:rotate(360deg)}}
/* 浏览器窗口:保留原有透视倾斜,叠加轻微上下悬浮 */
.hv-browser{max-width:720px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 24px 60px -12px rgba(37,99,235,.25);overflow:hidden;transform:perspective(1200px) rotateX(2deg);position:relative;z-index:1;animation:hvFloat 5.5s ease-in-out infinite}
@keyframes hvFloat{0%,100%{transform:perspective(1200px) rotateX(2deg) translateY(0)}50%{transform:perspective(1200px) rotateX(2deg) translateY(-9px)}}
/* 光轨四周的漂浮光点(www.js 注入,位置/延迟错峰) */
.hv-spark{position:absolute;border-radius:50%;z-index:2;pointer-events:none;background:var(--primary);box-shadow:0 0 12px rgba(37,99,235,.65);animation:hvSpark 3.8s ease-in-out infinite}
.hv-spark.s1{width:9px;height:9px;top:6%;left:10%;animation-delay:.2s}
.hv-spark.s2{width:6px;height:6px;top:14%;right:12%;background:#0ea5e9;box-shadow:0 0 10px rgba(14,165,233,.7);animation-delay:1s}
.hv-spark.s3{width:11px;height:11px;bottom:2%;left:18%;animation-delay:1.7s}
.hv-spark.s4{width:6px;height:6px;bottom:10%;right:20%;background:#0ea5e9;box-shadow:0 0 10px rgba(14,165,233,.7);animation-delay:2.5s}
@keyframes hvSpark{0%,100%{transform:translateY(0);opacity:.9}50%{transform:translateY(-15px);opacity:.4}}
/* ============ 右侧悬浮工具栏(www.js 统一注入,全站生效) ============ */
.float-tools{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:90;display:flex;flex-direction:column;background:#fff;border-radius:14px;box-shadow:var(--shadow-3d);border:1px solid var(--border);padding:5px;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.float-tools.show{opacity:1;visibility:visible}
.ft-item{width:54px;height:52px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-2);transition:all .2s;background:none;position:relative}
.ft-item svg{width:19px;height:19px}
.ft-item span{font-size:10.5px;font-weight:600;line-height:1}
.ft-item:hover{background:var(--primary-light);color:var(--primary-dark)}
.ft-sep{height:1px;margin:3px 8px;background:var(--border)}
.ft-pop{position:absolute;right:66px;bottom:-2px;width:176px;background:#fff;border-radius:14px;box-shadow:var(--shadow-3d);border:1px solid var(--border);padding:15px 14px 13px;text-align:center;display:none}
.ft-pop.show{display:block;animation:ftPop .2s ease}
@keyframes ftPop{from{opacity:0;transform:translateX(8px)}to{opacity:1;transform:translateX(0)}}
.ft-qr-box{width:148px;height:148px;margin:0 auto 8px;border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.ft-qr-box svg{width:100%;height:100%}
.ft-pop p{font-size:12px;color:var(--text-2);line-height:1.6}
.ft-pop-close{position:absolute;top:5px;right:10px;color:var(--text-3);font-size:17px;line-height:1;cursor:pointer}
@media(max-width:640px){.float-tools{display:none}}

/* ============ 登录态导航(用户胶囊 + 下拉菜单) ============ */
.nav-user{position:relative;flex:none}
.nav-user-btn{display:inline-flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border:1px solid var(--border);border-radius:999px;background:#fff;font-size:13.5px;font-weight:600;color:var(--text);transition:all .2s}
.nav-user-btn:hover{border-color:rgba(37,99,235,.45);box-shadow:0 6px 16px -8px rgba(37,99,235,.4)}
.nav-avatar{width:30px;height:30px;border-radius:50%;background:var(--grad-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:none}
.nav-user-name{max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-user-menu{position:absolute;top:calc(100% + 10px);right:0;width:218px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-3d);padding:8px;display:none;z-index:200}
.nav-user-menu.open{display:block;animation:nuIn .18s ease}
@keyframes nuIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.nu-head{padding:8px 12px 10px;border-bottom:1px solid var(--border);margin-bottom:6px;display:flex;flex-direction:column;gap:2px}
.nu-head b{font-size:14px;font-weight:700;color:var(--text)}
.nu-head span{font-size:12px;color:var(--text-3)}
.nav-user-menu>a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;font-size:13.5px;color:var(--text-2);font-weight:500;transition:all .15s}
.nav-user-menu>a span{width:16px;text-align:center;color:var(--text-3);font-size:12px;flex:none}
.nav-user-menu>a:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-user-menu>a.nu-logout{color:var(--danger);border-top:1px solid var(--border);border-radius:0 0 8px 8px;margin-top:4px;padding-top:11px}
.nav-user-menu>a.nu-logout span{color:var(--danger)}
.nav-primary-auth{padding:9px 18px;font-size:13.5px;flex:none}
@media(max-width:600px){
  .nav-user-name{display:none}
  .nav-user-btn{padding-right:8px}
  .nav-primary-auth{padding:9px 13px;font-size:13px}
}

.hv-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#f8fafc;border-bottom:1px solid var(--border)}
.hv-dot{width:11px;height:11px;border-radius:50%}
.hv-dot.r{background:#ef4444}.hv-dot.y{background:#f59e0b}.hv-dot.g{background:#22c55e}
.hv-url{margin-left:12px;font-size:12px;color:var(--text-3);font-family:var(--font-mono);background:#fff;padding:4px 12px;border-radius:6px;flex:1;max-width:280px}
.hv-body{padding:14px}
.hv-row{display:flex;align-items:center;gap:14px;padding:11px 12px;border-radius:10px;transition:background .2s}
.hv-row:hover{background:var(--bg-soft)}
.hv-tag{font-size:11px;font-weight:700;padding:3px 9px;border-radius:6px;flex-shrink:0}
.tag-s{background:var(--primary-light);color:var(--primary-dark)}
.tag-h{background:#ffedd5;color:#ea580c}
.tag-l{background:var(--accent-soft);color:#0e7490}
.hv-addr{font-family:var(--font-mono);font-size:13px;color:var(--text);flex:1}
.hv-loc{font-size:12.5px;color:var(--text-3)}
.hv-badge{font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:999px;background:#dcfce7;color:#16a34a}
.hv-badge.warn{background:#ffedd5;color:#ea580c}

/* ---------- 深色使用流程区块 ---------- */
.how-it-works{background:linear-gradient(160deg,#0f172a,#1e293b);color:#fff;position:relative;overflow:hidden}
.how-it-works::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.07) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.how-it-works .container{position:relative;z-index:1}
.how-it-works .section-head h2{color:#fff}
.how-it-works .section-head p{color:#94a3b8}
.how-it-works .tag.light{background:rgba(59,130,246,.18);color:#93c5fd;border-color:rgba(147,197,253,.3)}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.how-card{background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.15);border-radius:16px;padding:28px 24px;position:relative;transition:all .3s;backdrop-filter:blur(8px)}
.how-card:hover{background:rgba(59,130,246,.1);border-color:rgba(96,165,250,.4);transform:translateY(-4px)}
.how-num{position:absolute;top:18px;right:22px;font-size:38px;font-weight:800;color:rgba(148,163,184,.18);font-family:var(--font-mono)}
.how-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#3b82f6,#2563eb);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px;box-shadow:0 8px 20px rgba(59,130,246,.35)}
.how-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:#fff}
.how-card p{font-size:13.5px;color:#94a3b8;line-height:1.7}

/* ---------- 协议对比 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare-card{padding:28px;transition:all .3s}
.compare-card:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.cmp-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;padding-bottom:16px;border-bottom:1px dashed var(--border)}
.cmp-badge{font-size:13px;font-weight:800;padding:6px 14px;border-radius:8px;background:var(--primary);color:#fff;letter-spacing:.5px}
.cmp-badge.s5{background:#ea580c}
.cmp-head h3{font-size:16px;font-weight:700}
.compare-card ul{list-style:none}
.compare-card li{font-size:13.5px;color:var(--text-2);padding:8px 0;line-height:1.7}
.compare-card li b{color:var(--text)}

/* ---------- CTA 横幅 ---------- */
.cta-band{padding:0}
.cta-box{background:var(--grad-primary);border-radius:20px;padding:48px 44px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;position:relative;overflow:hidden;box-shadow:0 20px 50px -10px rgba(37,99,235,.4)}
.cta-box::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;background:radial-gradient(circle,rgba(255,255,255,.25),transparent 70%);border-radius:50%}
/* 横幅微光循环扫过(参考组件库 CTA shimmer) */
.cta-box::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(100deg,rgba(255,255,255,0) 25%,rgba(255,255,255,.16) 50%,rgba(255,255,255,0) 75%);background-size:220% 100%;animation:ctaShimmer 3.4s linear infinite}
@keyframes ctaShimmer{0%{background-position:120% 0}100%{background-position:-20% 0}}
.cta-box h2{color:#fff;font-size:26px;font-weight:800;margin-bottom:8px;position:relative}
.cta-box p{color:rgba(255,255,255,.85);font-size:15px;position:relative}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.btn-white{background:#fff;color:var(--primary-dark)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.btn-ghost-light{color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:rgba(255,255,255,.15)}

/* ---------- 响应式补充 ---------- */
@media(max-width:960px){
  .how-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .cta-box{padding:32px 24px}
  .cta-box h2{font-size:22px}
  .hv-url{max-width:none}
}

/* ============================================================
   企业级精致化增强(20260923)
   资质信息排版、等宽文本工具类与内页页脚三行布局兼容
   ============================================================ */
/* 等宽数字/代码文本:信用代码、SHA 校验值等 */
.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.3px}
/* 内页页脚在三条备案信息时居中排列(覆盖首页 space-between 的两端布局) */
footer .footer-bottom[style*="padding-top:0"]{justify-content:center}
footer .footer-bottom a{transition:color var(--transition-fast)}
/* 主体核验表中的备案链接在悬停时加下划线,强化可点击提示 */
.verify-table td a:hover{text-decoration:underline}

/* ============================================================
   芒果云官网 1:1 对齐覆盖块(20261001)
   依据《芒果云设计系统提取.md》§5(官网 www 设计系统)与 §6(交互动效)
   ——容器/导航/Hero/区块节奏/卡片/按钮/FAQ/页脚/抽屉全部对齐;
   ——本块位于文件末尾,同优先级时覆盖上文旧规则;
   ——全部沿用既有类名与 JS 钩子(.nav/.scrolled、#navLinks/.open、
     .faq-q/.open、.reveal/.in、.year、.toast),不破坏任何业务逻辑。
   ============================================================ */

:root{
  /* §6.1 动效分档:链接/菜单 .15s、卡片抬升 .18s、抽屉 .3s */
  --t-fast:.15s;
  --t-card:.18s;
  --t-drawer:.3s;
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(0,0,.2,1);
  --ease-drawer:cubic-bezier(.645,.045,.355,1);
}

/* ---------- 布局容器:max-w-7xl = 80rem = 1280px,px-4/6/8 ---------- */
.container{max-width:80rem;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航:sticky h-16 + bg-background/95 + blur + border-b ---------- */
.nav{position:fixed;inset:0 0 auto 0;top:0;z-index:100;
  background:hsl(var(--background)/.95);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);box-shadow:none;
  transition:top var(--t-drawer) var(--ease),box-shadow var(--t-fast) var(--ease)}
.nav.scrolled{background:hsl(var(--background)/.95);
  border-bottom-color:var(--border);
  box-shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -16px rgba(16,24,40,.16)}
.nav-inner{height:64px;max-width:80rem;padding:0 16px}
@media(min-width:640px){.nav-inner{padding:0 24px}}
@media(min-width:1024px){.nav-inner{padding:0 32px}}
.logo{gap:10px;font-size:18px;font-weight:700;letter-spacing:0}
.logo-mark{width:34px;height:34px}
.logo-mark img{width:100%;height:100%;border-radius:inherit;object-fit:cover;display:block}
.logo em{background:none;-webkit-background-clip:border-box;background-clip:border-box;color:var(--primary)}
.nav-links{gap:28px}
.nav-links .nav-top{font-size:14px;font-weight:500;color:var(--text-2);transition:color var(--t-fast) var(--ease)}
.nav-links .nav-top:hover,.nav-links .nav-top.active,.nav-links .nav-top.active-parent{color:var(--text)}
/* 芒果云一级导航无下划线动效 */
.nav-links .nav-top::after{display:none}
.nav-top-row{height:64px}
/* 下拉面板:§6 链接/菜单 .15s,顶部 10px 桥接区保留 */
.nav-sub{min-width:160px;border-radius:12px;padding:6px;
  box-shadow:0 10px 24px -8px rgba(16,24,40,.16);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility var(--t-fast)}
.nav-sub a{font-size:14px;padding:8px 14px;border-radius:8px;transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.nav-sub a:hover{background:hsl(var(--muted));color:var(--text)}
.nav-sub a.active{background:hsl(var(--primary-h)/.1);color:var(--primary);font-weight:600}
.nav-actions{gap:8px}
/* 汉堡按钮:芒果云为带边框的 44×44 方盒 */
.menu-toggle{width:44px;height:44px;padding:0;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:8px;background:var(--card);transition:background var(--t-fast) var(--ease)}
.menu-toggle:hover{background:hsl(var(--muted))}
@media(max-width:960px){.menu-toggle{display:flex}}

/* ---------- 移动端:汉堡抽屉(右侧滑入,§3.7 抽屉 0.3s 曲线) ---------- */
@media(max-width:960px){
  .nav-links{position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(320px,86vw);max-height:none;overflow-y:auto;
    display:flex;flex-direction:column;align-items:stretch;
    padding:84px 20px 28px;gap:4px;
    background:#fff;border-left:1px solid var(--border);border-bottom:none;border-radius:0;
    box-shadow:-12px 0 36px rgba(16,24,40,.14);
    transform:translateX(100%);visibility:hidden;opacity:1;
    transition:transform var(--t-drawer) var(--ease-drawer),visibility var(--t-drawer)}
  .nav-links.open{display:flex;transform:translateX(0);visibility:visible;box-shadow:-12px 0 36px rgba(16,24,40,.14)}
  .nav-links .nav-top,.nav-item>.nav-top{font-size:15px}
}
.nav-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:95;
  opacity:0;visibility:hidden;transition:opacity var(--t-drawer) var(--ease),visibility var(--t-drawer)}
body.nav-open .nav-mask{opacity:1;visibility:visible}
body.nav-open{overflow:hidden}
@media(min-width:961px){.nav-mask{display:none}}

/* ---------- 按钮:纯色主按钮 + rounded-lg + min-h-11 + active scale(.98) ---------- */
.btn{min-height:44px;padding:11px 20px;border-radius:8px;font-size:14px;font-weight:600;
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),
             transform .1s var(--ease)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:none;overflow:visible}
.btn-primary::after{display:none}                    /* 去除斜向扫光 */
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:none;box-shadow:none}
.btn-outline{border-width:1px;border-color:var(--primary);color:var(--primary);background:var(--background)}
.btn-outline:hover{background:hsl(var(--muted));color:var(--primary);border-color:var(--primary)}
.btn-ghost{color:var(--text-2);font-weight:500;background:transparent;padding:11px 16px}
.btn-ghost:hover{color:var(--text);background:hsl(var(--muted))}
.btn-lg{min-height:48px;padding:12px 28px;font-size:15px;border-radius:8px}
.btn-white{background:#fff;color:var(--primary);border:none}
.btn-white:hover{background:hsl(var(--muted));transform:none}
.btn-ghost-light{border-width:1px}

/* ---------- Hero:radial+linear 渐变、双列 1.05fr/0.95fr、去光斑网格 ---------- */
.hero{padding:112px 0 48px;overflow:hidden;border-bottom:1px solid var(--border);
  background:radial-gradient(circle at 15% 12%,hsl(var(--primary-h)/.14),transparent 30%),
             linear-gradient(145deg,hsl(var(--muted)),hsl(var(--background)));
  animation:none}
.hero::before,.hero::after{display:none}
.hero .container{position:relative;z-index:2}
@media(min-width:768px){
  .hero{min-height:calc(100dvh - 4rem);display:flex;align-items:center}
  .hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;width:100%}
}
.hero-copy{min-width:0}
.hero-badge{display:inline-block;padding:0;border:none;background:none;box-shadow:none;
  backdrop-filter:none;border-radius:0;color:var(--primary);
  font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:16px;animation:none}
.hero-badge .dot{display:none}
.hero h1{font-size:clamp(34px,4.6vw,52px);line-height:1.15;letter-spacing:-.02em;margin-bottom:18px;color:var(--foreground)}
.hero h1 .grad{background:none;-webkit-background-clip:border-box;background-clip:border-box;
  color:var(--primary);-webkit-text-fill-color:var(--primary)}
.hero .lead{font-size:16px;line-height:1.75;color:var(--text-2);max-width:600px;margin-bottom:28px}
.hero-cta{gap:12px;margin-bottom:0}
.hero .hero-cta{margin-bottom:0}
.hero-visual{margin-top:0}
.hero-visual::before,.hero-visual::after{display:none}   /* 去除旋转光轨 */
.hv-spark{display:none}
.hv-browser{max-width:none;transform:none;border-radius:16px;
  box-shadow:0 24px 70px rgba(50,50,81,.16);animation:none}

/* ---------- 数据条:section.border-b.bg-card.py-10,4 组 stat ---------- */
.stat-band{border-bottom:1px solid var(--border);background:var(--card);padding:36px 0}
.stat-band .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;margin:0}
@media(min-width:768px){.stat-band .hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.hstat .num{font-size:26px;font-weight:700;line-height:1.2;
  background:none;-webkit-background-clip:border-box;background-clip:border-box;
  color:var(--text);-webkit-text-fill-color:var(--text)}
.hstat .lbl{font-size:13px;color:var(--text-2);margin-top:4px}

/* ---------- 区块节奏:py-16 sm:py-20 + 交替 muted 底 ---------- */
section{padding:64px 0}
@media(min-width:640px){section{padding:80px 0}}
.sec-muted{background:hsl(var(--muted)/.55);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stat-band{padding:36px 0}
.signup-strip{padding:64px 0}
@media(min-width:640px){.signup-strip{padding:80px 0}}
.cta-band{padding:0 0 72px}
/* 区块标题:左对齐 + 小号主色 eyebrow(芒果云无胶囊 tag) */
.section-head{text-align:left;max-width:none;margin:0 0 40px}
.section-head .tag{display:block;padding:0;border:none;border-radius:0;background:none;
  color:var(--primary);font-size:14px;font-weight:600;letter-spacing:.08em;margin-bottom:12px}
.section-head h2{font-size:30px;font-weight:700;letter-spacing:-.02em;margin-bottom:12px}
@media(min-width:640px){.section-head h2{font-size:36px}}
.section-head p{color:var(--text-2);font-size:16px;max-width:640px}
.section-head.sub{margin-top:48px}

/* ---------- 卡片:rounded-2xl(16px)+ §6 hover 抬升 .18s/-2px ---------- */
.glass{border-radius:16px;border-color:var(--border);
  transition:transform var(--t-card) ease,box-shadow var(--t-card) ease,border-color var(--t-fast) var(--ease)}
.feature-card::after,.advice-card::after{display:none}   /* 去除斜向扫光 */
.feature-card,.advice-card,.step,.cov-card,.guide-card,
.contact-card,.compare-card,.company-item,.p-card,.iw-chip,.news-row{
  transition:transform var(--t-card) ease,box-shadow var(--t-card) ease,border-color var(--t-fast) var(--ease)}
.feature-card:hover,.advice-card:hover,.step:hover,.cov-card:hover,.guide-card:hover,
.contact-card:hover,.compare-card:hover,.company-item:hover,.p-card:hover,.iw-chip:hover{
  transform:translateY(-2px);border-color:hsl(var(--primary-h)/.45);
  box-shadow:0 6px 18px rgba(37,99,235,.09)}

/* ---------- FAQ:芒果云为单卡静态问答(分隔线),保留 .faq-q/.faq-a 类与 JS ---------- */
.faq-list{max-width:1024px;background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:0 24px;margin:0 auto}
@media(min-width:640px){.faq-list{padding:0 32px}}
.faq-item{margin:0;border:none;border-top:1px solid var(--border);border-radius:0;
  background:transparent;box-shadow:none;overflow:visible}
.faq-item:first-child{border-top:none}
.faq-item.open{border-color:var(--border);box-shadow:none}
.faq-q{padding:24px 0;font-size:17px;font-weight:600;color:var(--text);cursor:default}
.faq-q .arrow{display:none}
.faq-a{max-height:none!important;overflow:visible;padding:0 0 24px;
  font-size:14px;line-height:1.75;color:var(--text-2)}
.faq-item.open .faq-a{max-height:none!important;padding-bottom:24px}

/* ---------- 页脚:bg #323251 + border-slate-700 + 单行两组(§5.1) ---------- */
footer{border-top:1px solid #1e293b;background:#323251;padding:0;margin-top:0;position:relative}
footer::before{display:none}
.footer-bar{min-height:80px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;padding:16px 0;font-size:12px;color:#cbd5e1}
@media(min-width:640px){
  .footer-bar{min-height:64px;flex-direction:row;justify-content:space-between;padding:12px 0;font-size:14px}
}
.fb-copy{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 16px;color:#cbd5e1}
.fb-nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 20px}
.fb-nav a,.fb-copy a{color:#cbd5e1;transition:color var(--t-fast) var(--ease)}
.fb-nav a:hover,.fb-copy a:hover,.footer-bottom a:hover{color:#fff}

/* ---------- 子页面页头:渐变横幅 + 面包屑(左对齐) ---------- */
.page-hero,.check-hero{background:linear-gradient(to bottom right,hsl(var(--primary-h)/.10),hsl(var(--background)) 55%,rgba(14,165,233,.10));
  border-bottom:1px solid var(--border);text-align:left}
.page-hero h1,.check-hero h1{color:var(--foreground)}
/* 子页 H1 内的渐变字改为继承正文色(芒果云子页 H1 全为深色) */
.page-hero h1 span[style],.check-hero h1 span[style]{
  background:none!important;color:inherit!important;-webkit-text-fill-color:currentColor!important}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:20px}
.crumb a{color:var(--text-2);transition:color var(--t-fast) var(--ease)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb b{font-weight:500;color:var(--text)}

/* ---------- 使用流程:深色区块收敛为芒果云浅色 muted 带 ---------- */
.how-it-works{background:hsl(var(--muted)/.55);color:var(--text);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.how-it-works::before{display:none}
.how-it-works .section-head h2{color:var(--text)}
.how-it-works .section-head p{color:var(--text-2)}
.how-it-works .tag.light{background:hsl(var(--primary-h)/.1);color:var(--primary);border:none}
.how-card{background:var(--card);border:1px solid var(--border);border-radius:16px;
  box-shadow:none;backdrop-filter:none;
  transition:transform var(--t-card) ease,box-shadow var(--t-card) ease,border-color var(--t-fast) var(--ease)}
.how-card:hover{background:var(--card);border-color:hsl(var(--primary-h)/.45);
  transform:translateY(-2px);box-shadow:0 6px 18px rgba(37,99,235,.09)}
.how-num{color:rgba(139,149,166,.35)}
.how-icon{background:var(--primary);box-shadow:none}
.how-card h3{color:var(--text)}
.how-card p{color:var(--text-2)}

/* ---------- CTA 横幅:纯色主色、去微光循环 ---------- */
.cta-box{background:var(--primary);border-radius:16px;box-shadow:none}
.cta-box::after{display:none}
.cta-box h2{font-size:26px}

/* ---------- 右侧悬浮工具栏/登录态胶囊跟随新导航视觉 ---------- */
.float-tools{border-radius:16px;box-shadow:0 10px 24px -8px rgba(16,24,40,.16)}
.nav-avatar{background:var(--primary)}
.nav-user-btn:hover{border-color:hsl(var(--primary-h)/.45);box-shadow:0 6px 16px -8px rgba(37,99,235,.25)}
.nav-user-menu{border-radius:12px;box-shadow:0 10px 24px -8px rgba(16,24,40,.16)}

/* ---------- 阅读进度条:纯色主色 ---------- */
.scroll-progress i{background:var(--primary);box-shadow:none}