/* ============================================================
   积效官网 · 设计系统
   视觉语言：Apple 式极简（大留白 / 精致字阶 / 毛玻璃 / 克制配色）
   交互结构：腾讯投放式（能力入口 / 分段切换 / 闭环 / 轮播）
   ============================================================ */

/* ---------- 设计令牌（v3 苹果冷白：纯白主底 / 系统灰交替 / 中性墨 / 三层轻影 / 单一强调红） ---------- */
:root{
  /* 颜色 —— 苹果式冷白亮场：纯白为底、#f5f5f7 为交替灰，品牌红只做信号色 */
  --ink:        #1d1d1f;   /* 苹果近黑，非纯黑 */
  --ink-2:      #424245;
  --ink-3:      #6e6e73;   /* 次要文字 */
  --ink-4:      #86868b;   /* 说明文字 */
  --line:       #d2d2d7;   /* 苹果分隔灰 */
  --hairline:   rgba(0,0,0,.085);
  --bg:         #ffffff;   /* 纯白主底 */
  --bg-soft:    #f5f5f7;   /* 交替通栏：苹果系统灰 */
  --bg-soft-2:  #fbfbfd;   /* 极浅冷白 */
  --shell:      #ffffff;   /* 卡片白 */
  --blue:       #E90000;   /* 品牌主红（对齐Logo），只用在 CTA/关键强调 */
  --blue-hover: #d10000;
  --blue-deep:  #b00000;
  --blue-soft:  #fdeaea;   /* 极浅冷红底，面积克制 */
  --dy:         #161823;   /* 抖音深色 */
  --wx:         #07c160;   /* 微信绿 */
  --xhs:        #ff2442;   /* 小红书红 */
  --gradient:   radial-gradient(1200px 520px at 78% -8%, rgba(233,0,0,.05), transparent 60%),
                radial-gradient(900px 480px at 0% 110%, rgba(233,0,0,.032), transparent 55%),
                linear-gradient(180deg,#ffffff 0%,#fafafc 100%);
  --gradient-blue: linear-gradient(135deg,#f51414 0%,#e60000 48%,#cc0000 100%);

  /* 字阶 — v4 加大断崖：display 更有力量，正文更舒适 */
  --fs-hero:  clamp(46px,7vw,84px);
  --fs-h1:    clamp(36px,5vw,58px);
  --fs-h2:    clamp(28px,3.5vw,44px);
  --fs-h3:    22px;
  --fs-body:  17px;
  --fs-sm:    14px;
  --fs-xs:    12px;

  /* 圆角：4 个角色，只有可点物才是全圆；shell 与 card 差 ≥12px */
  --r-shell:    28px;   /* 大壳 / 面板 / CTA 通栏 */
  --r-card:     18px;   /* 常规卡片（v4 加大） */
  --r-card-sm:  12px;   /* 图片 / 小卡 */
  --r-control:  10px;   /* 输入框 / 下拉项 / 标签 */
  --r-pill:     999px;  /* 按钮、chip */
  /* 兼容旧变量名 */
  --r-card-old: 16px;

  /* 三层中性轻影（接触 / 形体 / 环境），v5 更柔更细腻，带极轻暖调 */
  --ease:       cubic-bezier(.22,1,.36,1);
  --ease-out:   cubic-bezier(.16,1,.3,1);
  --shadow-sm:  0 1px 2px rgba(17,24,39,.035), 0 4px 12px -6px rgba(17,24,39,.07);
  --shadow:     0 1px 2px rgba(17,24,39,.035), 0 14px 32px -14px rgba(17,24,39,.10), 0 30px 56px -30px rgba(17,24,39,.12);
  --shadow-lg:  0 2px 6px rgba(17,24,39,.04), 0 24px 48px -18px rgba(17,24,39,.15), 0 56px 96px -48px rgba(17,24,39,.20);
  --shadow-card-hover: 0 2px 4px rgba(17,24,39,.04), 0 18px 40px -16px rgba(17,24,39,.14), 0 40px 72px -40px rgba(17,24,39,.16);
  --shadow-red: 0 10px 28px -8px rgba(233,0,0,.32), 0 3px 8px rgba(233,0,0,.14);
  --maxw: 1180px;
  --nav-h: 62px;
  --section-pad: 120px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","SF Pro Text","PingFang SC","Helvetica Neue","Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);font-size:var(--fs-body);
  line-height:1.6;letter-spacing:0;-webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;overflow-x:hidden;
  font-feature-settings:"tnum" 1,"kern" 1;
  /* v4 全局微妙背景装饰：极淡红色径向光晕，让页面有呼吸感不平板 */
  background-image:
    radial-gradient(1000px 600px at 85% -5%, rgba(233,0,0,.025), transparent 55%),
    radial-gradient(800px 500px at -5% 30%, rgba(233,0,0,.018), transparent 50%);
  background-attachment:fixed;
}
a{color:var(--ink-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--blue)}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
h1,h2,h3,h4{font-weight:720;line-height:1.12;letter-spacing:-.01em;color:var(--ink);font-feature-settings:"tnum" 1}
::selection{background:rgba(233,0,0,.16)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  html.js .reveal{opacity:1!important;transform:none!important}
}

/* ---------- 通用容器 / 标题 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:var(--section-pad) 0}
.section.soft{background:var(--bg-soft)}
.section.tight{padding:88px 0}
.sec-head{text-align:center;max-width:780px;margin:0 auto 68px}
.sec-eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:700;color:var(--blue-deep);
  letter-spacing:.2em;margin-bottom:18px;text-transform:uppercase;position:relative}
.sec-eyebrow::before{content:"";width:24px;height:2px;background:linear-gradient(90deg,var(--blue),rgba(233,0,0,.3));border-radius:2px}
.sec-head.text-center .sec-eyebrow::after{content:"";width:24px;height:2px;background:linear-gradient(90deg,rgba(233,0,0,.3),var(--blue));border-radius:2px}
.sec-title{font-size:var(--fs-h1);font-weight:760;letter-spacing:-.02em;line-height:1.1}
.sec-sub{margin-top:18px;font-size:19px;color:var(--ink-3);line-height:1.7}
.text-center{text-align:center}

/* ---------- 按钮（苹果胶囊） ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:46px;padding:0 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
  white-space:nowrap;cursor:pointer;letter-spacing:.01em}
.btn-primary{background:var(--gradient-blue);color:#fff;
  box-shadow:0 1px 2px rgba(176,0,0,.25),0 8px 20px -8px rgba(233,0,0,.45),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{color:#fff;text-decoration:none;transform:translateY(-2px);
  box-shadow:0 2px 4px rgba(176,0,0,.28),0 14px 30px -10px rgba(233,0,0,.5),inset 0 1px 0 rgba(255,255,255,.2)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(233,0,0,.22)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--shell);border-color:var(--ink-3);color:var(--ink);text-decoration:none}
.btn-light{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-light:hover{background:rgba(255,255,255,.28);text-decoration:none}
.btn-sm{height:36px;padding:0 18px;font-size:13px}
.btn-block{width:100%}
.arrow-link{display:inline-flex;align-items:center;gap:4px;color:var(--ink);font-size:15px;font-weight:600}
.arrow-link::after{content:"›";font-size:18px;line-height:1;transition:transform .2s}
.arrow-link:hover::after{transform:translateX(3px)}
.arrow-link:hover{text-decoration:none}

/* ============================================================
   导航栏（毛玻璃）
   ============================================================ */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(22px);
  -webkit-backdrop-filter:saturate(180%) blur(22px);
  border-bottom:1px solid var(--hairline);transition:all .3s var(--ease)}
.nav.scrolled{background:rgba(255,255,255,.9);box-shadow:0 1px 0 var(--hairline),0 10px 28px -18px rgba(17,17,19,.18)}
.nav-inner{max-width:1440px;margin:0 auto;padding:0 22px;height:100%;
  display:flex;align-items:center;gap:8px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink);margin-right:16px}
.brand:hover{text-decoration:none}
.brand small{font-weight:500;font-size:11px;color:var(--ink-4);display:block;line-height:1.1}
.brand-logo{height:36px;width:auto;display:block;object-fit:contain}
.footer .brand-logo{height:38px}
@media(max-width:734px){.brand-logo{height:32px}.footer .brand-logo{height:34px}}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-item{position:relative;height:var(--nav-h);display:flex;align-items:center}
.nav-link{display:inline-flex;align-items:center;gap:4px;height:auto;padding:8px 12px;border-radius:10px;
  font-size:14.5px;color:var(--ink);font-weight:600;transition:background .2s,color .2s;line-height:1.3;white-space:nowrap}
.nav-link:hover{background:rgba(0,0,0,.055);color:var(--ink);text-decoration:none}
.nav-link.active{background:rgba(233,0,0,.09);color:var(--blue);font-weight:700}
.nav-link.featured{color:var(--blue);font-weight:700}
.nav-link.featured:hover{background:rgba(233,0,0,.06)}
.nav-caret{font-size:12px;color:var(--ink-3);transition:transform .2s;margin-left:1px}
.nav-item:hover .nav-caret{transform:rotate(180deg)}
/* 下拉 */
.nav-drop{position:absolute;top:var(--nav-h);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:196px;background:rgba(255,255,255,.97);backdrop-filter:blur(22px);
  border-radius:var(--r-card-sm);box-shadow:var(--shadow-lg);border:1px solid var(--hairline);
  padding:7px;opacity:0;visibility:hidden;transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s}
.nav-item:hover .nav-drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-drop a{display:block;padding:10px 14px;border-radius:var(--r-control);font-size:14px;color:var(--ink-2);font-weight:500}
.nav-drop a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
/* 行业解决方案分组下拉 */
.nav-drop-industry{min-width:284px;padding:9px}
.nav-drop-industry .drop-label{display:block;padding:8px 12px 3px;font-size:11px;font-weight:600;letter-spacing:.06em;color:var(--ink-4)}
.nav-drop-industry>a{font-size:13.5px;padding:8px 12px}
.nav-drop-industry .drop-sep{height:1px;background:var(--hairline);margin:7px 10px}
.nav-drop-industry .drop-soon-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px 6px;padding:0 5px 4px}
.nav-drop-industry .drop-soon{display:flex;align-items:center;gap:6px;padding:7px 8px;font-size:12.5px;
  color:var(--ink-2);font-weight:500;border-radius:var(--r-control);white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease)}
.nav-drop-industry a.drop-soon:hover{background:var(--bg-soft);color:var(--blue)}
.nav-drop-industry a.drop-soon.active{color:var(--blue);font-weight:660}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-login{font-size:14px;color:var(--ink-2)}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== 方案A：大面板下拉 ===== */
.nav-mega{position:absolute;top:var(--nav-h);left:0;transform:translateY(8px);
  width:680px;background:rgba(255,255,255,.97);backdrop-filter:blur(22px);
  border-radius:var(--r-card);box-shadow:var(--shadow-lg);border:1px solid var(--hairline);
  padding:20px 22px;opacity:0;visibility:hidden;transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  display:grid;grid-template-columns:1.15fr 1fr;gap:0}
.nav-item:hover .nav-mega{opacity:1;visibility:visible;transform:translateY(0)}
.nav-item.open .nav-mega{opacity:1;visibility:visible;transform:translateY(0)}
.nav-item.open .nav-caret{transform:rotate(180deg)}
.nav-drop-toggle{cursor:pointer}
.nav-mega::before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.mega-col{padding:0 20px;border-right:1px solid var(--hairline)}
.mega-col:first-child{padding-left:0}
.mega-col:last-child{border-right:none;padding-right:0}
.mega-label{display:block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-3);
  text-transform:uppercase;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--hairline)}
.mega-group{margin-bottom:14px}
.mega-group:last-child{margin-bottom:0}
.mega-link{display:block;padding:8px 10px;border-radius:var(--r-control);font-size:14.5px;color:var(--ink);
  font-weight:650;transition:background .2s}
.mega-link:hover{background:var(--bg-soft);text-decoration:none;color:var(--blue)}
.mega-link .desc{display:block;font-size:12px;font-weight:400;color:var(--ink-3);margin-top:2px;line-height:1.5}
.mega-sublinks{display:flex;flex-wrap:wrap;gap:2px 12px;padding:3px 10px 6px}
.mega-sublinks a{font-size:13.5px;color:var(--ink-2);font-weight:500;padding:2px 0}
.mega-sublinks a:hover{color:var(--blue);text-decoration:none}
.mega-simple a{display:flex;align-items:center;gap:9px;padding:8px 11px;border-radius:var(--r-control);font-size:14.5px;
  color:var(--ink);font-weight:550}
.mega-simple a:hover{background:var(--bg-soft);color:var(--blue);text-decoration:none}
.mega-soon-grid{display:flex;flex-direction:column;gap:1px}
.mega-soon-grid a{display:flex;align-items:flex-start;gap:10px;padding:7px 8px;border-radius:var(--r-control);color:var(--ink);font-weight:550;font-size:13.5px;transition:background .18s,color .18s}
.mega-soon-grid a:hover{background:var(--bg-soft);color:var(--blue);text-decoration:none}
.ms-ico{width:26px;height:26px;border-radius:8px;background:rgba(233,0,0,.07);display:flex;align-items:center;justify-content:center;flex:none;color:var(--blue);margin-top:1px}
.ms-ico svg{width:14px;height:14px}
.ms-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.ms-text small{display:block;font-size:11px;font-weight:400;color:var(--ink-4);margin-top:2px;line-height:1.4}
.mega-soon-grid a:hover .ms-ico{background:rgba(233,0,0,.12)}
.mega-simple .ms-ico{width:24px;height:24px;background:transparent;color:var(--ink-3)}
.mega-simple a:hover .ms-ico{color:var(--blue);background:transparent}

/* 投放平台大面板 */
.nav-mega-platform{width:720px;grid-template-columns:1fr;gap:18px;padding:24px 26px}
.mega-pf-section{margin-bottom:10px}
.mega-pf-label{font-size:13.5px;font-weight:700;letter-spacing:.06em;color:var(--ink-3);
  text-transform:uppercase;margin-bottom:11px}
.mega-cards-core{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mega-card{display:flex;flex-direction:column;gap:10px;padding:17px;border-radius:var(--r-card-sm);
  border:1px solid var(--hairline);transition:all .2s;background:var(--shell)}
.mega-card:hover{border-color:var(--blue);box-shadow:var(--shadow-sm);transform:translateY(-2px);text-decoration:none}
.mega-card .mc-top{display:flex;align-items:center;gap:10px}
.mega-card .mc-icon{width:32px;height:32px;border-radius:8px;object-fit:cover;flex:none}
.mega-card .mc-name{font-size:14px;font-weight:400;color:var(--ink)}
.mega-card .mc-desc{font-size:13px;color:var(--ink-3);line-height:1.75}
.mega-cards-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.mega-card-mini{display:flex;flex-direction:column;gap:8px;padding:13px 15px;border-radius:var(--r-card-sm);
  border:1px solid var(--hairline);transition:all .2s;background:var(--shell)}
.mega-card-mini:hover{border-color:var(--blue);box-shadow:var(--shadow-sm);transform:translateY(-2px);text-decoration:none}
.mega-card-mini .mc-row{display:flex;align-items:center;gap:10px}
.mega-card-mini .mc-icon{width:26px;height:26px;border-radius:6px;object-fit:cover;flex:none}
.mega-card-mini .mc-name{font-size:13px;font-weight:400;color:var(--ink)}
.mega-card-mini .mc-desc{font-size:12px;color:var(--ink-3);line-height:1.5}
.mega-card-mini .mc-tag{display:none}

/* 平台下拉：logo 裸显（不加底色圆角块），整张平台卡铺对应品牌浅色底 */
.mega-card .mc-icon,.mega-card-mini .mc-icon{padding:0;background:transparent;border-radius:0;object-fit:contain}
.mega-card:has([src*="douyin"]),.mega-card-mini:has([src*="douyin"]){background:rgba(22,24,35,.05)}
.mega-card:has([src*="xhs"]),.mega-card-mini:has([src*="xhs"]){background:rgba(255,36,66,.06)}
.mega-card:has([src*="wechat"]),.mega-card-mini:has([src*="wechat"]){background:rgba(7,193,96,.07)}
.mega-card:has([src*="xy-"]),.mega-card-mini:has([src*="xy-"]){background:rgba(245,168,0,.10)}
.mega-card:has([src*="bd-"]),.mega-card-mini:has([src*="bd-"]){background:rgba(46,111,255,.06)}
.mega-card:has([src*="ks-"]),.mega-card-mini:has([src*="ks-"]){background:rgba(255,90,15,.07)}
.mega-card:has([src*="alipay"]),.mega-card-mini:has([src*="alipay"]){background:rgba(22,119,255,.06)}
.mega-card:has([src*="bilibili"]),.mega-card-mini:has([src*="bilibili"]){background:rgba(251,114,153,.07)}
/* hover：整张卡底色加深、边框落到该平台品牌色 */
.mega-card:has([src*="douyin"]):hover,.mega-card-mini:has([src*="douyin"]):hover{border-color:#161823;background:rgba(22,24,35,.10)}
.mega-card:has([src*="xhs"]):hover,.mega-card-mini:has([src*="xhs"]):hover{border-color:#ff2442;background:rgba(255,36,66,.12)}
.mega-card:has([src*="wechat"]):hover,.mega-card-mini:has([src*="wechat"]):hover{border-color:#07c160;background:rgba(7,193,96,.13)}
.mega-card:has([src*="xy-"]):hover,.mega-card-mini:has([src*="xy-"]):hover{border-color:#f5a800;background:rgba(245,168,0,.18)}
.mega-card:has([src*="bd-"]):hover,.mega-card-mini:has([src*="bd-"]):hover{border-color:#2e6fff;background:rgba(46,111,255,.12)}
.mega-card:has([src*="ks-"]):hover,.mega-card-mini:has([src*="ks-"]):hover{border-color:#ff5a0f;background:rgba(255,90,15,.13)}
.mega-card:has([src*="alipay"]):hover,.mega-card-mini:has([src*="alipay"]):hover{border-color:#1677ff;background:rgba(22,119,255,.12)}
.mega-card:has([src*="bilibili"]):hover,.mega-card-mini:has([src*="bilibili"]):hover{border-color:#fb7299;background:rgba(251,114,153,.13)}

/* 右侧双CTA */
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-cta-wx{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 18px;
  background:var(--blue);color:#fff;border-radius:999px;font-size:14.5px;font-weight:600;
  border:none;cursor:pointer;transition:opacity .2s;white-space:nowrap}
.nav-cta-wx:hover{opacity:.88}
.nav-cta-wx img{width:17px;height:17px}
.nav-cta-tel{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 16px;
  background:transparent;color:var(--ink);border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid var(--line);transition:all .2s;white-space:nowrap}
.nav-cta-tel:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.nav-cta-tel svg{width:15px;height:15px}

@media(max-width:1100px){
  .nav-mega{width:680px}
  .nav-mega-platform{width:640px}
}
@media(max-width:1068px){
  .nav-mega,.nav-mega-platform{display:none}
  .nav-cta-tel{display:none}
  .nav-cta-wx span{display:none}
  .nav-cta-wx{padding:0 10px}
  /* 移动端：下拉项展开时显示子菜单（内联在导航项下方） */
  .nav-menu.open .nav-item.open .nav-mega,
  .nav-menu.open .nav-item.open .nav-mega-platform{
    display:block;position:static;transform:none;width:auto;opacity:1;visibility:visible;
    box-shadow:none;border:none;border-radius:0;padding:8px 4px 12px;background:transparent;backdrop-filter:none}
  .nav-menu.open .nav-item.open .nav-mega::before{display:none}
  .nav-menu.open .mega-col{width:100%}
  .nav-menu.open .mega-cards-core,.nav-menu.open .mega-cards-mini{grid-template-columns:1fr;gap:8px}
  .nav-menu.open .nav-item{display:block;height:auto;align-items:stretch}
  .nav-menu.open .nav-item.open .nav-mega{margin-top:4px}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;padding:calc(var(--nav-h) + 96px) 0 96px;
  background:var(--gradient);overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.28;z-index:0;pointer-events:none}
.hero::before{width:460px;height:460px;background:#ffe3e6;top:-160px;right:-100px}
.hero::after{width:380px;height:380px;background:#ffedee;bottom:-180px;left:-120px}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--blue-deep);
  background:var(--shell);border:1px solid rgba(233,0,0,.14);padding:7px 15px;border-radius:var(--r-pill);
  box-shadow:var(--shadow-sm);margin-bottom:26px;letter-spacing:.04em}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 3px rgba(233,0,0,.12)}
.hero h1{font-size:var(--fs-hero);font-weight:700;letter-spacing:-.015em;line-height:1.06}
.hero h1 em{font-style:normal;background:var(--gradient-blue);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:24px;font-size:20px;color:var(--ink-3);line-height:1.65;max-width:560px}
.hero-cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-platforms{margin-top:30px;display:flex;align-items:center;gap:16px;color:var(--ink-4);font-size:13px}
.platform-tags{display:flex;flex-wrap:wrap;gap:8px 10px}
.ptag{padding:0;background:transparent;border:none;display:inline-flex;align-items:center}
.ptag img{width:30px;height:30px;display:block;object-fit:contain}
.ptag.dy{border-color:#dbe0ea}.ptag.wx{border-color:#bfe9d2;color:#06994d}.ptag.xhs{border-color:#ffd0d8;color:#e01e3a}

/* 数据条 */
.stat-card{background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.7);
  border-radius:var(--r-shell);box-shadow:var(--shadow-lg);padding:36px 32px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 18px}
.stat .num{font-size:40px;font-weight:720;letter-spacing:-.02em;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums}
.stat .num small{font-size:20px;font-weight:720}
.stat .lab{margin-top:9px;font-size:13px;color:var(--ink-3)}
.stat-card .form-note{font-size:11px;color:var(--ink-4);margin-top:14px;text-align:center;line-height:1.5}
.hero-form{margin-top:22px;display:grid;gap:11px}
.hero-form input,.hero-form select{height:46px;border:1px solid var(--line);border-radius:12px;
  padding:0 15px;font-size:14px;font-family:inherit;color:var(--ink);background:var(--bg-soft);transition:.2s var(--ease);width:100%}
.hero-form input:focus,.hero-form select:focus{outline:none;border-color:var(--blue);background:#fff;
  box-shadow:0 0 0 3px rgba(233,0,0,.12)}

/* ===== 直接联系卡（替代留资表单） ===== */
.contact-box{margin-top:22px;border-top:1px solid var(--line);padding-top:20px;display:flex;flex-direction:column;gap:14px}
.cc-tel{display:flex;align-items:center;gap:13px;background:var(--blue-soft);border-radius:16px;padding:13px 16px;transition:.22s}
.cc-tel:hover{background:#fbdbdb;text-decoration:none;transform:translateY(-1px)}
.cc-ico{width:42px;height:42px;border-radius:50%;background:var(--gradient-blue);color:#fff;display:grid;place-items:center;flex:none}
.cc-meta{display:flex;flex-direction:column;line-height:1.3;text-align:left}
.cc-lab{font-size:12px;color:var(--ink-3)}
.cc-num{font-size:21px;font-weight:700;color:var(--blue-deep);letter-spacing:.5px}
.cc-qr{display:flex;align-items:center;gap:14px}
.cc-qr img{width:98px;height:98px;border-radius:12px;border:1px solid var(--line);background:#fff;padding:5px;flex:none;object-fit:contain}
.cc-wx{margin:0;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.cc-wx b{display:block;color:var(--blue-deep);font-size:16px;letter-spacing:.5px}
.contact-card-big{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:28px 26px}
.contact-card-big img{width:190px;height:190px;border-radius:16px;border:1px solid var(--line);background:#fff;padding:10px;object-fit:contain}
.ccb-wx{font-size:15px;color:var(--ink-2)}
.ccb-wx b{color:var(--blue-deep);font-size:18px;letter-spacing:.5px}
.contact-card-big .btn{width:100%;justify-content:center}
@media(max-width:734px){.cc-num{font-size:19px}.cc-qr img{width:88px;height:88px}.contact-card-big img{width:160px;height:160px}}

/* 数据横条（无表单场景） */
.statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:64px;background-clip:padding-box}
.statbar .stat{background:var(--shell);padding:36px 20px;text-align:center}
.statbar .num{font-size:44px;font-weight:720;color:var(--ink);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.statbar .num small{font-size:20px}
.statbar .lab{margin-top:9px;font-size:14px;color:var(--ink-3)}

/* ============================================================
   能力入口（学腾讯：投放目标图标卡）
   ============================================================ */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cap-card{background:var(--shell);border:1px solid var(--hairline);border-radius:var(--r-card);padding:32px 26px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);cursor:default}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.cap-ico{width:50px;height:50px;border-radius:var(--r-card-sm);display:grid;place-items:center;margin-bottom:18px;
  background:var(--bg-soft);color:var(--ink);transition:background .3s var(--ease),color .3s var(--ease)}
.cap-card:hover .cap-ico{background:var(--blue-soft);color:var(--blue)}
.cap-ico svg{width:25px;height:25px}
.cap-card h3{font-size:18px;margin-bottom:8px;font-weight:650}
.cap-card p{font-size:14px;color:var(--ink-3);line-height:1.6}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pain-card{background:var(--shell);border-radius:var(--r-card);padding:28px 24px;border:1px solid var(--hairline)}
.pain-num{width:30px;height:30px;border-radius:50%;background:var(--bg-soft);color:var(--ink-3);
  font-weight:700;display:grid;place-items:center;font-size:14px;margin-bottom:16px;font-variant-numeric:tabular-nums}
.pain-card h3{font-size:17px;margin-bottom:9px}
.pain-card p{font-size:14px;color:var(--ink-3);line-height:1.6}

/* ============================================================
   苹果风分段控件（替代腾讯 Tab）
   ============================================================ */
.segment{display:inline-flex;background:rgba(0,0,0,.05);border-radius:var(--r-pill);padding:3px;margin:0 auto;gap:2px}
.segment-wrap{display:flex;justify-content:center;margin-bottom:48px}
.seg-btn{height:38px;padding:0 24px;border-radius:var(--r-pill);font-size:14px;font-weight:500;
  color:var(--ink-3);transition:all .25s var(--ease);display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.seg-btn .sdot{width:8px;height:8px;border-radius:50%}
.seg-btn.active{background:var(--shell);color:var(--ink);box-shadow:var(--shadow-sm);font-weight:650}
.seg-panel{display:none;animation:fadeUp .5s var(--ease)}
.seg-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* 平台切换内容 左文右图 */
.platform-pane{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
  background:var(--shell);border:1px solid var(--hairline);border-radius:var(--r-shell);padding:56px;box-shadow:var(--shadow-sm)}
.platform-pane h3{font-size:28px;margin-bottom:6px}
.platform-pane .ptagline{color:var(--ink-3);font-size:15px;margin-bottom:24px}
.platform-pane ul li{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--hairline);font-size:15px;color:var(--ink-2)}
.platform-pane ul li:last-child{border-bottom:none}
.tick{flex:none;width:22px;height:22px;border-radius:50%;background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:1px}
.mock{border-radius:var(--r-card);background:var(--bg-soft);border:1px solid var(--line);aspect-ratio:4/3;
  display:grid;place-items:center;color:var(--ink-4);font-size:13px;text-align:center;padding:30px;position:relative;overflow:hidden}
.mock-phone{width:150px;height:300px;border-radius:26px;background:#fff;border:8px solid #1d1d1f;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.mock-phone::before{content:"";position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:54px;height:6px;border-radius:6px;background:#d2d2d7}
.mock-screen{position:absolute;inset:24px 0 0;background:linear-gradient(160deg,#ffe9eb,#fbdce0)}

/* ===== 腾讯投放 · 流量版位铺列（参考腾讯投放新版位矩阵） ===== */
.platform-pane.tx{display:block;padding:48px 50px}
.tx-lead{max-width:900px}
.tx-lead h3{font-size:28px;margin-bottom:8px}
.tx-lead .ptagline{color:var(--ink-3);font-size:15px;margin-bottom:22px;line-height:1.7}
.tx-points{display:grid;grid-template-columns:repeat(3,1fr);gap:0 30px;margin-bottom:38px}
.tx-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);
  padding:12px 0;border-bottom:1px solid var(--hairline);line-height:1.55}
.tx-points .tick{width:20px;height:20px;font-size:11px;margin-top:2px}
.tx-slots-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;margin:4px 0 18px;color:var(--ink)}
.tx-slots-title small{font-weight:400;color:var(--ink-4);font-size:12.5px}
.tx-slots-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--blue);flex:none}
.tx-slots{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.tx-slots.n4{grid-template-columns:repeat(4,1fr);gap:22px}
.tx-slots.n2{grid-template-columns:repeat(2,minmax(0,300px));justify-content:center;gap:26px}
.tx-slot{background:var(--shell);border:1px solid var(--line);border-radius:var(--r-card-sm);padding:12px 12px 14px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);display:block}
.tx-slot:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(233,0,0,.3)}
.tx-shot{border-radius:var(--r-control);overflow:hidden;background:var(--bg-soft);aspect-ratio:420/780;position:relative;border:1px solid var(--line)}
.tx-shot img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.tx-meta{display:flex;align-items:center;gap:8px;margin-top:11px}
.tx-ico{width:24px;height:24px;flex:none}
.tx-name{font-size:14px;font-weight:700;color:var(--ink)}
.tx-desc{font-size:12px;line-height:1.55;color:var(--ink-3);margin-top:7px}
@media(max-width:1024px){
  .platform-pane.tx{padding:34px 28px}
  .tx-points{grid-template-columns:1fr;margin-bottom:26px}
  .tx-slots{grid-template-columns:repeat(3,1fr)}
  .tx-slots.n4{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .platform-pane.tx{padding:26px 20px}
  .tx-slots{grid-template-columns:repeat(2,1fr);gap:12px}
  .tx-slots.n2{grid-template-columns:1fr;max-width:340px}
  .tx-lead h3{font-size:23px}
}

/* ============================================================
   4 步闭环流程
   ============================================================ */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;position:relative}
.flow-step{position:relative;padding:0 22px;text-align:center;min-width:0}
.flow-step:not(:last-child)::after{content:"";position:absolute;top:34px;right:-14px;width:28px;height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px)}
.flow-ico{width:68px;height:68px;border-radius:50%;margin:0 auto 20px;display:grid;place-items:center;
  background:var(--shell);border:1.5px solid var(--line);box-shadow:var(--shadow-sm);color:var(--blue);position:relative;z-index:2}
.flow-ico .n{position:absolute;top:-6px;right:-6px;width:24px;height:24px;border-radius:50%;
  background:var(--gradient-blue);color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center}
.flow-ico svg{width:30px;height:30px}
.flow-step h3{font-size:18px;margin-bottom:9px}
.flow-step p{font-size:14px;color:var(--ink-3);line-height:1.6}

/* 人工客服王牌模块（深色，暖炭 Pro 感，非纯黑） */
.dark{background:#14161c;color:#f5f5f7;border-radius:0;position:relative;overflow:hidden}
.dark::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 85% 0%,rgba(233,0,0,.14),transparent 60%);pointer-events:none}
.dark .wrap{position:relative;z-index:1}
.dark .sec-title{color:#f5f5f7}
.dark .sec-sub{color:#a1a1a6}
.dark-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.dark h3{color:#f5f5f7;font-size:30px;margin-bottom:18px}
.dark .lead2{color:#aeaeb2;font-size:17px;line-height:1.7;margin-bottom:28px}
.cs-list{display:grid;gap:14px}
.cs-item{display:flex;gap:16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-card);padding:20px 22px;transition:background .3s var(--ease)}
.cs-item:hover{background:rgba(255,255,255,.08)}
.cs-item .ci{flex:none;width:42px;height:42px;border-radius:var(--r-card-sm);background:rgba(233,0,0,.18);
  color:#ff8585;display:grid;place-items:center}
.cs-item h4{color:#f5f5f7;font-size:16px;margin-bottom:5px}
.cs-item p{color:#a1a1a6;font-size:14px;line-height:1.6}
.cs-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.cs-metric{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:var(--r-card);padding:24px 16px;text-align:center}
.cs-metric .v{font-size:30px;font-weight:720;color:#f5f5f7;font-variant-numeric:tabular-nums}.cs-metric .v small{font-size:16px}
.cs-metric .l{font-size:12.5px;color:#98989d;margin-top:7px;line-height:1.4}

/* ============================================================
   案例轮播
   ============================================================ */
.case-scroller{position:relative}
.case-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 4px 24px;scrollbar-width:none}
.case-track::-webkit-scrollbar{display:none}
.case-card{flex:0 0 calc((100% - 44px)/3);scroll-snap-align:start;background:var(--shell);
  border:1px solid var(--hairline);border-radius:var(--r-card);overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-top{height:170px;background:var(--gradient);display:flex;align-items:flex-end;padding:20px;gap:8px;flex-wrap:wrap;align-content:flex-end}
.tag{font-size:11.5px;font-weight:600;padding:4px 11px;border-radius:var(--r-pill);background:rgba(255,255,255,.85);color:var(--blue-deep)}
.tag.platform{background:transparent;padding:0;display:inline-flex;align-items:center;vertical-align:middle}
.tag.platform img{width:22px;height:22px;border-radius:6px;display:block}
.case-body{padding:24px 26px 28px}
.case-body h3{font-size:19px;line-height:1.35;margin-bottom:10px;font-weight:650}
.case-body p{font-size:13.5px;color:var(--ink-3);line-height:1.6;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.case-nums{display:flex;gap:20px;padding-top:16px;border-top:1px solid var(--hairline)}
.case-nums .cn .v{font-size:22px;font-weight:720;color:var(--ink);font-variant-numeric:tabular-nums}
.case-nums .cn .v small{font-size:13px}
.case-nums .cn .l{font-size:11.5px;color:var(--ink-4);margin-top:2px}
.scroll-ctrl{display:flex;gap:10px;justify-content:center;margin-top:10px}
.sbtn{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);transition:.2s;font-size:18px}
.sbtn:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ============================================================
   为什么选我们 / 优势
   ============================================================ */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.why-card{padding:34px 28px;background:var(--shell);border-radius:var(--r-card);border:1px solid var(--hairline);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.why-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.why-card .big-ico{width:48px;height:48px;border-radius:var(--r-card-sm);background:var(--bg-soft);
  display:grid;place-items:center;color:var(--ink);margin-bottom:20px;transition:background .3s var(--ease),color .3s var(--ease)}
.why-card:hover .big-ico{background:var(--blue-soft);color:var(--blue)}
.why-card h3{font-size:18px;margin-bottom:10px;font-weight:650}
.why-card p{font-size:14.5px;color:var(--ink-3);line-height:1.65}

/* 团队三端 */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.team-col{background:var(--shell);border-radius:var(--r-card);border:1px solid var(--hairline);overflow:hidden}
.team-head{padding:22px;text-align:center;color:#fff;font-weight:650;font-size:17px;letter-spacing:.01em}
.team-col:nth-child(1) .team-head{background:linear-gradient(135deg,#f20b0b,#d60000)}
.team-col:nth-child(2) .team-head{background:linear-gradient(135deg,#dd0000,#ad0000)}
.team-col:nth-child(3) .team-head{background:linear-gradient(135deg,#a80000,#7a0000)}
.team-col ul{padding:14px 24px 26px}
.team-col li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-2);display:flex;gap:9px;align-items:center}
.team-col li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);flex:none}
.team-col li:last-child{border-bottom:none}

/* ============================================================
   套餐
   ============================================================ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.price-card{background:var(--shell);border:1px solid var(--line);border-radius:var(--r-card);padding:36px 30px;display:flex;flex-direction:column;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.price-card.feature{border:1.5px solid var(--blue);box-shadow:var(--shadow);position:relative;transform:scale(1.03)}
.price-card.feature:hover{transform:scale(1.03) translateY(-4px)}
.price-card.feature::before{content:"推荐";position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--gradient-blue);color:#fff;font-size:12px;font-weight:600;padding:5px 16px;border-radius:var(--r-pill)}
.price-tier{font-size:15px;color:var(--ink-3);font-weight:500}
.price-spend{font-size:30px;font-weight:700;margin:10px 0 4px}
.price-spend small{font-size:14px;color:var(--ink-4);font-weight:400}
.price-role{display:block;text-align:center;font-size:12.5px;color:var(--blue-deep);background:var(--blue-soft);
  padding:6px 12px;border-radius:var(--r-pill);margin:0 auto 22px}
.price-list{display:grid;gap:12px;margin-bottom:28px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.4}
.price-list .ok{color:var(--blue);font-weight:700;flex:none}
.price-list .no{color:var(--ink-4);flex:none}
.price-list li.off{color:var(--ink-4)}

/* 漏斗（线索分级） */
.funnel{display:grid;gap:10px;max-width:760px;margin:0 auto}
.fstep{margin:0 auto;color:#fff;font-weight:600;border-radius:12px;padding:16px;text-align:center;
  background:var(--gradient-blue);box-shadow:var(--shadow-sm)}
.fstep small{display:block;font-weight:400;font-size:12px;opacity:.85;margin-top:3px}
.fstep.f1{width:100%}.fstep.f2{width:88%}.fstep.f3{width:76%}.fstep.f4{width:64%;opacity:.92}
.fstep.f5{width:52%;opacity:.84}.fstep.f6{width:40%;background:linear-gradient(135deg,#a80000,#7a0000);opacity:1}

/* ============================================================
   FAQ 手风琴
   ============================================================ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--shell);border:1px solid var(--hairline);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.faq-item.open{border-color:rgba(233,0,0,.25);box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 26px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink)}
.faq-q .pm{flex:none;width:26px;height:26px;border-radius:50%;background:var(--bg-soft);
  display:grid;place-items:center;font-size:18px;color:var(--blue);transition:.3s}
.faq-item.open .pm{transform:rotate(45deg);background:var(--blue);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 26px 22px;color:var(--ink-3);font-size:15px;line-height:1.75}

/* ============================================================
   CTA 通栏
   ============================================================ */
.cta-band{position:relative;background:var(--gradient-blue);border-radius:var(--r-shell);padding:76px 60px;
  text-align:center;color:#fff;overflow:hidden;
  box-shadow:0 2px 6px rgba(176,0,0,.2),0 28px 60px -28px rgba(233,0,0,.5),inset 0 1px 0 rgba(255,255,255,.16)}
.cta-band::before{content:"";position:absolute;width:380px;height:380px;border-radius:50%;
  background:rgba(255,255,255,.12);top:-160px;left:-80px}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;
  background:rgba(255,255,255,.1);bottom:-140px;right:-60px}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(28px,3.6vw,42px)}
.cta-band p{margin:16px 0 30px;font-size:18px;color:rgba(255,255,255,.9)}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   页脚
   ============================================================ */
.footer{background:var(--bg-soft);padding:70px 0 30px;color:var(--ink-3);font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.2fr 1.4fr 0.9fr 0.8fr 0.8fr;gap:28px;padding-bottom:44px;
  border-bottom:1px solid var(--line)}
.footer h5{font-size:14px;color:var(--ink);margin-bottom:16px;font-weight:650;letter-spacing:.02em}
.footer li{margin-bottom:9px}
.footer a{color:var(--ink-3);transition:color .2s}
.footer a:hover{color:var(--blue)}
.foot-brand p{margin-top:14px;line-height:1.75;max-width:280px;font-size:13px}
.foot-brand .foot-contact{margin-top:18px;list-style:none;padding:0}
.foot-brand .foot-contact li{display:flex;gap:8px;align-items:center;margin-bottom:10px;font-size:12.5px;color:var(--ink-2)}
.foot-brand .foot-contact svg{flex:none;color:var(--blue);opacity:.85}
.foot-contact li{display:flex;gap:9px;align-items:flex-start;margin-bottom:12px}
.foot-contact svg{flex:none;margin-top:2px;color:var(--blue)}
.foot-group{margin-bottom:18px}
.foot-group:last-child{margin-bottom:0}
.foot-group-title{display:inline-block;font-size:11.5px;font-weight:700;color:var(--blue);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px;padding-bottom:4px;border-bottom:1.5px solid var(--blue);opacity:.85}
.foot-group ul{list-style:none;padding:0;margin:0}
.foot-group li{margin-bottom:7px}
.foot-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-4)}

/* ============================================================
   悬浮联系 + 弹窗
   ============================================================ */
.floating{position:fixed;right:22px;bottom:34px;z-index:90;display:flex;flex-direction:column;gap:10px}
.fl-btn{width:54px;height:54px;border-radius:50%;background:var(--shell);box-shadow:var(--shadow-lg);
  display:grid;place-items:center;color:var(--blue);position:relative;transition:transform .28s var(--ease),box-shadow .28s var(--ease);border:1px solid var(--hairline)}
.fl-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.fl-btn svg{width:25px;height:25px}
.fl-btn .tip{position:absolute;right:64px;background:var(--ink);color:#fff;font-size:12.5px;white-space:nowrap;
  padding:7px 12px;border-radius:8px;opacity:0;pointer-events:none;transition:.2s}
.fl-btn:hover .tip{opacity:1}
.fl-btn.wx{color:#07c160}.fl-btn.tel{color:var(--blue)}
.fl-btn img{width:27px;height:27px;object-fit:contain;display:block}
/* 手机端底部固定悬浮栏 */
.bottom-cta-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:89;background:var(--shell);
  border-top:1px solid var(--hairline);box-shadow:0 -4px 20px rgba(0,0,0,.08);padding:10px 16px;
  grid-template-columns:1fr 1fr;gap:10px;padding-bottom:calc(10px + env(safe-area-inset-bottom))}
.bottom-cta-bar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:13px 16px;
  border-radius:12px;font-size:15px;font-weight:650;text-decoration:none;transition:all .2s ease}
.bottom-cta-bar .bct-tel{background:var(--gradient-blue);color:#fff;box-shadow:0 4px 12px rgba(233,0,0,.25)}
.bottom-cta-bar .bct-tel:active{transform:scale(.97)}
.bottom-cta-bar .bct-wx{background:var(--bg-soft);color:var(--ink);border:1px solid var(--hairline)}
.bottom-cta-bar .bct-wx:active{transform:scale(.97)}
.bottom-cta-bar svg{width:18px;height:18px}
@media(max-width:734px){.bottom-cta-bar{display:grid}.floating{display:none}body{padding-bottom:76px}}
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);backdrop-filter:blur(4px);z-index:200;
  display:none;align-items:center;justify-content:center;padding:22px}
.modal-mask.show{display:flex;animation:fadeUp .25s}
.modal{background:var(--shell);border-radius:var(--r-shell);padding:38px 34px;max-width:520px;width:100%;text-align:center;position:relative;animation:pop .35s var(--ease);box-shadow:var(--shadow-lg)}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:scale(1);opacity:1}}
.modal-close{position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:50%;
  background:var(--bg-soft);display:grid;place-items:center;color:var(--ink-3);font-size:18px}
.qr-box{width:190px;height:190px;margin:18px auto;border-radius:16px;background:
  repeating-linear-gradient(45deg,var(--bg-soft) 0 10px,var(--bg-soft-2) 10px 20px);
  border:1px dashed var(--line);display:grid;place-items:center;color:var(--ink-4);font-size:12.5px;text-align:center;padding:16px}
/* 双二维码弹窗 */
.qr-grid{display:flex;gap:20px;justify-content:center;margin:20px 0 8px}
.qr-item{flex:1;max-width:200px;display:flex;flex-direction:column;align-items:center}
.qr-role{font-size:13px;font-weight:600;color:var(--blue-deep);margin-bottom:10px;padding:5px 14px;background:var(--blue-soft);border-radius:20px}
.qr-item .qr-img{width:160px;height:160px;border-radius:14px;border:1px solid var(--line);background:#fff;padding:6px;object-fit:contain}
.qr-item .wx-id{margin-top:10px;font-size:14px;font-weight:600;color:var(--ink);background:var(--bg-soft);border-radius:8px;padding:8px 10px;width:100%;text-align:center}
.modal h3{font-size:21px;margin-bottom:6px}
.modal p{font-size:14px;color:var(--ink-3);line-height:1.6}
.modal .wx-id{margin-top:14px;font-size:16px;font-weight:600;color:var(--ink);
  background:var(--bg-soft);border-radius:10px;padding:11px;display:flex;justify-content:center;align-items:center;gap:8px}
.modal .tel-big{font-size:26px;font-weight:700;color:var(--blue-deep);letter-spacing:.01em;margin:10px 0 4px}
@media(max-width:734px){.modal{max-width:380px;padding:30px 22px}.qr-grid{flex-direction:column;gap:18px;align-items:center}.qr-item{max-width:180px}.qr-item .qr-img{width:150px;height:150px}}

/* ===== 文章阅读弹窗（大尺寸、正文内部滚动） ===== */
.article-modal{background:var(--shell);border-radius:var(--r-shell);max-width:820px;width:100%;max-height:86vh;
  display:flex;flex-direction:column;position:relative;overflow:hidden;animation:pop .35s var(--ease);box-shadow:var(--shadow-lg)}
.article-modal .modal-close{top:16px;right:18px;z-index:3;background:#fff;box-shadow:var(--shadow-sm)}
.article-head{padding:34px 46px 22px;border-bottom:1px solid var(--line);padding-right:72px}
.article-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.article-meta .post-cat{margin:0}
.article-meta time{font-size:12.5px;color:var(--ink-4)}
.article-title{font-size:25px;font-weight:700;line-height:1.4;letter-spacing:-.01em;color:var(--ink);margin:0}
.article-body{padding:26px 46px 12px;overflow-y:auto;-webkit-overflow-scrolling:touch;flex:1}
.article-body h4{font-size:18.5px;font-weight:700;color:var(--ink);margin:26px 0 12px;letter-spacing:-.01em}
.article-body h4:first-child{margin-top:4px}
.article-body p{font-size:15px;color:var(--ink-2);line-height:1.9;margin:0 0 13px}
.article-body ul,.article-body ol{margin:0 0 14px;padding-left:22px}
.article-body li{font-size:15px;color:var(--ink-2);line-height:1.85;margin-bottom:7px}
.article-body strong{color:var(--ink);font-weight:700}
.article-body table{width:100%;border-collapse:collapse;margin:6px 0 16px;font-size:14px}
.article-body th,.article-body td{border:1px solid var(--line);padding:9px 12px;text-align:left;line-height:1.5}
.article-body th{background:var(--bg-soft);font-weight:600;color:var(--ink)}
.art-tip{margin:22px 0 4px;background:var(--blue-soft);border-radius:14px;padding:16px 18px;font-size:14px;color:var(--blue-deep);line-height:1.75}
.article-foot{padding:16px 46px;border-top:1px solid var(--line);background:var(--bg-soft);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.article-foot .af-txt{font-size:13.5px;color:var(--ink-3)}
@media(max-width:734px){.article-modal{max-height:90vh;border-radius:18px}.article-head{padding:26px 22px 18px;padding-right:60px}
  .article-title{font-size:20px}.article-body{padding:20px 22px 8px}.article-foot{padding:15px 22px}}

/* ===== 独立文章页（SEO 长文页） ===== */
.article-hero{padding:calc(var(--nav-h) + 62px) 0 30px;background:var(--gradient);text-align:left}
.article-hero .wrap{max-width:860px}
.article-hero .crumb{margin-bottom:16px}
.article-hero h1{font-size:33px;line-height:1.42;letter-spacing:-.01em;margin:0 0 16px;font-weight:700}
.article-hero .article-meta{margin-bottom:0}
.article-page{max-width:860px;margin:0 auto;padding:0 22px}
.article-card{background:var(--shell);border:1px solid var(--hairline);border-radius:var(--r-shell);box-shadow:var(--shadow-sm);
  margin:-26px 0 42px;overflow:hidden;position:relative;z-index:2}
.article-doc{padding:42px 50px 30px}
.article-doc h2{font-size:19.5px;font-weight:700;color:var(--ink);margin:30px 0 13px;letter-spacing:-.01em}
.article-doc h2:first-child{margin-top:6px}
.article-doc p{font-size:15.5px;color:var(--ink-2);line-height:1.95;margin:0 0 14px}
.article-doc ul,.article-doc ol{margin:0 0 15px;padding-left:23px}
.article-doc li{font-size:15.5px;color:var(--ink-2);line-height:1.9;margin-bottom:8px}
.article-doc strong{color:var(--ink);font-weight:700}
.article-doc table{width:100%;border-collapse:collapse;margin:8px 0 18px;font-size:14px}
.article-doc th,.article-doc td{border:1px solid var(--line);padding:10px 13px;text-align:left;line-height:1.55;vertical-align:top}
.article-doc th{background:var(--bg-soft);font-weight:600;color:var(--ink)}
.article-doc .art-tip{margin:26px 0 6px}
.related{margin:6px 0 72px}
.related h3{font-size:20px;font-weight:700;margin-bottom:18px;letter-spacing:-.01em}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.related-item{display:block;background:var(--shell);border:1px solid var(--hairline);border-radius:var(--r-card);padding:20px 22px;
  text-decoration:none;color:inherit;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.related-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:transparent}
.related-item .r-cat{font-size:12px;font-weight:600;color:var(--blue-deep)}
.related-item .r-title{font-size:15px;font-weight:600;color:var(--ink);line-height:1.55;margin:9px 0 6px}
.related-item .r-more{font-size:13px;color:var(--blue);font-weight:600}
@media(max-width:734px){
  .article-hero h1{font-size:24px}
  .article-card{border-radius:18px;margin-bottom:30px}
  .article-doc{padding:28px 22px 20px}
  .related-grid{grid-template-columns:1fr}
}

/* 页面通用 Hero（内页） */
.page-hero{padding:calc(var(--nav-h) + 76px) 0 70px;text-align:center;background:var(--gradient)}
.page-hero h1{font-size:var(--fs-h1)}
.page-hero p{max-width:720px;margin:18px auto 0;font-size:19px;color:var(--ink-3);line-height:1.6}
.crumb{font-size:13px;color:var(--ink-4);margin-bottom:18px}
.crumb a{color:var(--ink-3)}

/* 滚动缓推（signature slow-push；仅 JS 可用时初始隐藏，无 JS / 减动效直接可见） */
.reveal{transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);will-change:opacity,transform}
html.js .reveal{opacity:0;transform:translateY(28px)}
html.js .reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
.reveal.d4{transition-delay:.32s}.reveal.d5{transition-delay:.4s}.reveal.d6{transition-delay:.48s}
/* v4 stagger 组：子元素依次淡入上移 */
.reveal-group > *{transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
html.js .reveal-group > *{opacity:0;transform:translateY(20px)}
html.js .reveal-group.in > *{opacity:1;transform:none}
html.js .reveal-group.in > *:nth-child(1){transition-delay:.05s}
html.js .reveal-group.in > *:nth-child(2){transition-delay:.12s}
html.js .reveal-group.in > *:nth-child(3){transition-delay:.19s}
html.js .reveal-group.in > *:nth-child(4){transition-delay:.26s}
html.js .reveal-group.in > *:nth-child(5){transition-delay:.33s}
html.js .reveal-group.in > *:nth-child(6){transition-delay:.4s}

/* ============================================================
   响应式（断点学苹果 734 / 1068）
   ============================================================ */
@media (max-width:1068px){
  .hero .wrap{grid-template-columns:1fr;gap:44px}
  .cap-grid,.pain-grid,.flow{grid-template-columns:repeat(2,1fr);gap:18px}
  .flow-step{margin-bottom:30px}
  .flow-step:not(:last-child)::after{display:none}
  .platform-pane,.dark-grid{grid-template-columns:1fr;gap:34px;padding:38px}
  .case-card{flex:0 0 calc((100% - 22px)/2)}
  .why-grid,.team-grid,.price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .price-card.feature{transform:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .statbar{grid-template-columns:1fr 1fr}
}
@media (max-width:734px){
  .section{padding:72px 0}
  .nav-menu,.nav-login{display:none}
  .nav-toggle{display:flex}
  .nav-menu.open{display:flex;position:fixed;top:var(--nav-h);left:0;right:0;height:calc(100vh - var(--nav-h));max-height:calc(100vh - var(--nav-h));flex-direction:column;
    align-items:stretch;background:rgba(255,255,255,.97);backdrop-filter:blur(20px);padding:10px 16px 20px;gap:2px;
    border-bottom:1px solid var(--line);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
  .nav-menu.open .nav-link{height:48px;width:100%}
  .nav-menu.open .nav-drop{display:none}
  /* 汉堡按钮展开后变叉号 */
  .nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}
  .cap-grid,.pain-grid,.why-grid,.team-grid,.cs-metrics{grid-template-columns:1fr}
  .case-card{flex:0 0 86%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:52px 26px;border-radius:22px}
  .platform-pane{padding:26px}
  .seg-btn{padding:0 15px;font-size:13px;height:36px}
  .hero p.lead{font-size:17px}
  .floating{right:14px;bottom:20px}.fl-btn{width:48px;height:48px}
}

/* 导航栏跳动标签 */
.mega-pf-badge{
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 10px;border-radius:20px;
  font-size:11px;font-weight:600;letter-spacing:.02em;
  margin-left:10px;vertical-align:middle;
  animation:badgeBounce 1.8s ease-in-out infinite;
}
.mega-pf-badge.badge-primary{
  background:linear-gradient(135deg,#ff6b35,#ff8c42);
  color:#fff;box-shadow:0 2px 8px rgba(255,107,53,.35);
}
.mega-pf-badge.badge-success{
  background:linear-gradient(135deg,#00b578,#00d68f);
  color:#fff;box-shadow:0 2px 8px rgba(0,181,120,.35);
}
@keyframes badgeBounce{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-3px)}
}

/* ============================================================
   v5 全站美化增强层（Apple 质感精修 · 不改变结构与布局，只提升质感）
   ============================================================ */

/* ---------- 1. 排印精修：标题更有力量、正文更透气 ---------- */
body{letter-spacing:.006em}
h1,h2,h3,h4{letter-spacing:-.018em}
.sec-title{letter-spacing:-.028em;line-height:1.12;font-weight:780}
.sec-sub{font-size:18px;line-height:1.75;color:var(--ink-3);font-weight:400}
.sec-eyebrow{font-weight:700;letter-spacing:.24em}
.sec-head{margin-bottom:60px}
.section{padding:108px 0}
.section.tight{padding:84px 0}

/* ---------- 2. 按钮精修：更细腻的高光与按压 ---------- */
.btn{font-weight:650;letter-spacing:.02em}
.btn-primary{
  background:linear-gradient(135deg,#f51414 0%,#e60000 50%,#cf0000 100%);
  box-shadow:0 1px 2px rgba(176,0,0,.22),0 8px 20px -8px rgba(233,0,0,.5),inset 0 1px 0 rgba(255,255,255,.22),inset 0 -1px 0 rgba(0,0,0,.06);
}
.btn-primary:hover{box-shadow:0 2px 4px rgba(176,0,0,.24),0 14px 30px -10px rgba(233,0,0,.55),inset 0 1px 0 rgba(255,255,255,.24)}
.btn-ghost{background:rgba(255,255,255,.7);backdrop-filter:blur(8px);border-color:rgba(0,0,0,.12);box-shadow:0 1px 2px rgba(17,24,39,.04)}
.btn-ghost:hover{border-color:rgba(0,0,0,.22);box-shadow:0 6px 18px -10px rgba(17,24,39,.18);transform:translateY(-2px)}

/* ---------- 3. 全站卡片统一质感：细腻描边 + 柔和浮起 ---------- */
.cap-card,.why-card,.pain-card,.case-card,.price-card,.team-col,
.related-item,.faq-item{border-color:rgba(17,24,39,.075)}
.cap-card,.why-card,.pain-card{
  box-shadow:0 1px 2px rgba(17,24,39,.03);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.cap-card:hover,.why-card:hover,.pain-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(233,0,0,.14);
}
/* 卡片图标容器统一：hover 时柔和变红 */
.cap-ico,.why-card .big-ico{transition:all .35s var(--ease)}
.cap-card:hover .cap-ico,.why-card:hover .big-ico{
  background:var(--blue-soft);color:var(--blue);
  transform:scale(1.06);
}

/* ---------- 4. Hero 精修：光晕更柔、联系卡更立体 ---------- */
.hero::before,.hero::after{opacity:.22;filter:blur(90px)}
.hero h1{letter-spacing:-.03em}
.hero-badge{
  background:rgba(255,255,255,.82);backdrop-filter:blur(12px);
  border-color:rgba(233,0,0,.16);
  box-shadow:0 2px 8px -2px rgba(233,0,0,.1),0 1px 2px rgba(17,24,39,.04);
}
.stat-card{
  background:rgba(255,255,255,.92);
  border:1px solid rgba(255,255,255,.8);
  box-shadow:0 2px 6px rgba(17,24,39,.04),0 30px 60px -28px rgba(17,24,39,.22),0 60px 100px -60px rgba(233,0,0,.18);
  backdrop-filter:blur(20px) saturate(160%);
}
.hs-ico{border-radius:12px}
.cc-tel{border-radius:18px;transition:all .3s var(--ease)}
.cc-tel:hover{transform:translateY(-2px);box-shadow:0 10px 24px -12px rgba(233,0,0,.3)}

/* ---------- 5. 区块 eyebrow 短横线更精致 ---------- */
.sec-eyebrow::before{width:22px;height:2px;border-radius:2px}

/* ---------- 6. 数据横条精修 ---------- */
.statbar{border-color:rgba(17,24,39,.08);border-radius:var(--r-card);box-shadow:var(--shadow-sm)}
.statbar .stat{transition:background .3s}
.statbar .stat:hover{background:var(--bg-soft-2)}
.statbar .num{letter-spacing:-.03em}

/* ---------- 7. 4步流程精修 ---------- */
.flow-ico{transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.flow-step:hover .flow-ico{transform:translateY(-4px);border-color:var(--blue);box-shadow:0 12px 28px -12px rgba(233,0,0,.3)}

/* ---------- 8. 案例卡精修 ---------- */
.case-card{box-shadow:0 1px 2px rgba(17,24,39,.03)}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover)}
.case-top{position:relative}
.case-nums{border-top-color:rgba(17,24,39,.07)}
.sbtn{transition:all .25s var(--ease)}
.sbtn:hover{transform:scale(1.08)}

/* ---------- 9. FAQ 精修 ---------- */
.faq-item{transition:border-color .3s,box-shadow .3s,transform .3s}
.faq-q{transition:color .25s}
.faq-item:hover{border-color:rgba(233,0,0,.2)}

/* ---------- 10. CTA 通栏：红色层次更高级、装饰圆更柔 ---------- */
.cta-band{
  background:linear-gradient(135deg,#ef0a0a 0%,#dc0000 55%,#c20000 100%);
  box-shadow:0 2px 6px rgba(176,0,0,.18),0 32px 64px -32px rgba(233,0,0,.55),inset 0 1px 0 rgba(255,255,255,.18);
}
.cta-band::before{background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%)}
.cta-band::after{background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%)}
.cta-band h2{letter-spacing:-.02em}
.btn-light{backdrop-filter:blur(8px);transition:all .25s}
.btn-light:hover{transform:translateY(-2px);background:rgba(255,255,255,.3)}

/* ---------- 11. 页脚精修：层次更清晰 ---------- */
.footer{background:linear-gradient(180deg,#f7f7f9 0%,#f3f3f6 100%)}
.footer h5{font-weight:700;letter-spacing:.01em}
.footer a{transition:color .2s,padding-left .2s}
.footer .foot-group ul a:hover{padding-left:3px}
.foot-bottom{color:var(--ink-4)}

/* ---------- 12. 内页 Hero 精修 ---------- */
.page-hero{padding-bottom:64px}
.page-hero h1{letter-spacing:-.03em;font-weight:780}
.page-hero p{line-height:1.7}

/* ---------- 13. 悬浮联系按钮精修 ---------- */
.fl-btn{transition:transform .3s var(--ease),box-shadow .3s}
.fl-btn:hover{transform:translateY(-4px) scale(1.05)}

/* ---------- 14. 分段控件精修 ---------- */
.segment{background:rgba(17,24,39,.055);padding:4px}
.seg-btn.active{box-shadow:0 2px 8px -2px rgba(17,24,39,.18),0 1px 2px rgba(17,24,39,.06)}

/* ---------- 15. 大面板平台切换卡精修 ---------- */
.platform-pane{box-shadow:var(--shadow)}
.tick{box-shadow:0 2px 6px -2px rgba(233,0,0,.25)}

/* ---------- 16. 深色人工客服模块精修 ---------- */
.dark{background:linear-gradient(160deg,#16181f 0%,#101218 100%)}
.cs-item{transition:background .3s,transform .3s,border-color .3s}
.cs-item:hover{background:rgba(255,255,255,.08);transform:translateX(4px);border-color:rgba(233,0,0,.25)}

/* ---------- 17. 标签 pill 精修 ---------- */
.tag{font-weight:650;letter-spacing:.02em}

/* ---------- 18. 输入框聚焦精修 ---------- */
.hero-form input:focus,.hero-form select:focus{box-shadow:0 0 0 4px rgba(233,0,0,.1)}

/* ---------- 19. 滚动揭示更柔 ---------- */
html.js .reveal{transform:translateY(24px)}

/* ---------- 20. 选中文本与滚动条 ---------- */
::selection{background:rgba(233,0,0,.14)}

/* ---------- 21. 全站按钮配色统一（A+B：通用页品牌红 / 平台页平台色） ---------- */
/* 实心按钮 hover 保持自身白字，禁止全局 a:hover{color:红} 泄漏造成红蓝/红绿撞色 */
a.btn-primary:hover,
a.btn-dark:hover,
a.btn-light:hover,
a.ap-btn-white:hover,
a.bl-btn-primary:hover { color: #fff; }
/* methodology 白底深字主按钮 hover 保持深字 */
a.m-cta-btn-primary:hover { color: var(--mt-deep); }
/* B站 CTA 区反转的白底粉字按钮 hover 保持粉字 */
.bl-cta a.bl-btn-primary:hover { color: var(--bl); }