/* ============================================================
   数科院 OPC 数字化社区平台 · 宣传站样式
   配色：未来界面蓝体系
   --blue #5F86FF 主色 | --light #A9C2FF 浅蓝 | --white #F4F7FF 白底
   --deep #2F3E66 深界面蓝（标题/页脚）
   ============================================================ */
:root{
  --blue:#5F86FF; --light:#A9C2FF; --white:#F4F7FF; --deep:#2F3E66;
  --ink:#1F2329; --gray:#5A6070; --line:#E6ECF7;

  /* 官网变量（对齐正式版 web/SiteHomeView.vue，用于完整复刻官网视觉） */
  --site-primary:#5F86FF;
  --site-primary-deep:#2F3E66;
  --site-purple:#7C5DEF;
  --site-accent:#f26a3e;
  --site-bg:#ffffff;
  --site-bg-soft:#f5f8fc;
  --site-text:rgba(0,0,0,.88);
  --site-text-2:rgba(0,0,0,.65);
  --site-text-3:rgba(0,0,0,.45);
  --site-border:#f0f0f0;
  --site-radius:14px;
  --site-radius-lg:20px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:#fff;line-height:1.7;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);transition:box-shadow .3s;
}
.nav.is-stuck{box-shadow:0 4px 20px rgba(47,62,102,.08)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--deep)}
.nav__logo{
  width:32px;height:32px;border-radius:9px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--blue),var(--light));
}
.nav__logo::after{content:"";position:absolute;inset:9px;border-radius:50%;background:#fff}
.nav__links{display:flex;gap:26px}
.nav__links a{font-size:14px;color:var(--gray);transition:color .2s}
.nav__links a:hover{color:var(--blue)}
.nav__toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--deep)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 30px;border-radius:10px;font-size:15px;font-weight:600;
  transition:all .25s;cursor:pointer;border:none;
}
.btn--primary{
  background:linear-gradient(135deg,var(--blue),var(--light));color:#fff;
  box-shadow:0 8px 20px rgba(95,134,255,.28);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(95,134,255,.38)}
.btn--ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn--ghost:hover{background:rgba(255,255,255,.24)}
.btn--dark{background:var(--deep);color:#fff}
.btn--dark:hover{background:#243352}

/* ---------- Hero ---------- */
.hero{
  padding:150px 0 90px;text-align:center;color:#fff;
  background:linear-gradient(160deg,var(--deep) 0%,var(--blue) 55%,var(--light) 100%);
}
.hero__badge{
  display:inline-block;padding:8px 18px;border-radius:999px;font-size:13px;margin-bottom:26px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
}
.hero__title{font-size:52px;font-weight:800;line-height:1.25;margin-bottom:22px}
.hero__lede{font-size:17px;color:rgba(255,255,255,.9);max-width:720px;margin:0 auto 34px}
.hero__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
.hero__points{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:860px;margin:0 auto}
.hero__point{
  padding:22px 18px;border-radius:14px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
}
.hero__point strong{display:block;font-size:16px;margin-bottom:4px}
.hero__point span{font-size:13px;color:rgba(255,255,255,.8)}

/* ---------- 通用区块 ---------- */
.section{padding:92px 0}
.section--alt{background:var(--white)}
.section__head{text-align:center;max-width:760px;margin:0 auto 56px}
.section__tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--blue);
  background:rgba(95,134,255,.1);padding:6px 16px;border-radius:999px;margin-bottom:18px;
}
.section__title{font-size:34px;font-weight:800;color:var(--deep);margin-bottom:16px;line-height:1.35}
.section__desc{font-size:16px;color:var(--gray)}
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px 26px;transition:all .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(47,62,102,.1);border-color:var(--light)}
.card__ic{
  width:48px;height:48px;border-radius:12px;margin-bottom:18px;font-size:22px;
  background:rgba(95,134,255,.12);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
}
.card h3{font-size:19px;color:var(--deep);margin-bottom:10px}
.card p{font-size:14px;color:var(--gray)}

.strip{margin-top:40px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.strip__item{text-align:center;padding:26px 18px;border-radius:14px;background:var(--white);border:1px solid var(--line)}
.strip__item strong{display:block;font-size:22px;color:var(--blue);margin-bottom:6px}
.strip__item span{font-size:13px;color:var(--gray)}

/* ---------- 服务体系 ---------- */
.svc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 28px;transition:all .3s}
.svc:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(47,62,102,.1)}
.svc__no{font-size:15px;font-weight:800;color:var(--light);margin-bottom:12px}
.svc h3{font-size:20px;color:var(--deep);margin-bottom:10px}
.svc__desc{font-size:14px;color:var(--gray);margin-bottom:18px}
.svc__list{display:flex;flex-wrap:wrap;gap:8px}
.svc__list li{
  font-size:13px;color:var(--deep);background:var(--white);
  border:1px solid var(--line);padding:5px 12px;border-radius:999px;
}

/* ---------- 能力 / 角色 / 生态 / 优势 ---------- */
.feat{padding:26px 22px;border-radius:14px;background:#fff;border:1px solid var(--line);transition:all .3s}
.feat:hover{border-color:var(--blue);transform:translateY(-3px);box-shadow:0 8px 24px rgba(47,62,102,.08)}
.feat strong{display:block;font-size:16px;color:var(--deep);margin-bottom:6px}
.feat span{font-size:13px;color:var(--gray)}

.role{
  padding:30px 24px;border-radius:16px;background:#fff;
  border:1px solid var(--line);border-top:4px solid var(--blue);transition:all .3s;
}
.role:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(47,62,102,.1)}
.role__tag{
  display:inline-block;font-size:12px;color:var(--blue);
  background:rgba(95,134,255,.1);padding:4px 12px;border-radius:999px;margin-bottom:14px;
}
.role h3{font-size:18px;color:var(--deep);margin-bottom:10px}
.role p{font-size:14px;color:var(--gray)}

.eco,.adv{padding:24px 22px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.eco strong,.adv strong{display:block;font-size:16px;color:var(--deep);margin-bottom:6px}
.eco span,.adv span{font-size:13px;color:var(--gray)}

/* ---------- CTA / 页脚 ---------- */
.cta{padding:96px 0;text-align:center;color:#fff;background:linear-gradient(135deg,var(--deep),var(--blue))}
.cta h2{font-size:34px;font-weight:800;margin-bottom:16px}
.cta p{font-size:16px;color:rgba(255,255,255,.88);margin-bottom:34px}
.cta__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.cta__contact{display:flex;gap:36px;justify-content:center;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.85)}
.cta__contact strong{display:block;color:#fff;margin-bottom:4px}

.footer{padding:44px 0;background:var(--deep);color:rgba(255,255,255,.7);font-size:13px}
.footer__inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer__brand{font-weight:700;color:#fff;font-size:15px;margin-bottom:6px}
.footer__links{display:flex;gap:22px}
.footer__links a:hover{color:#fff}

/* ---------- 后台 ---------- */
.admin{padding:100px 0 60px;max-width:900px;margin:0 auto}
.admin h1{font-size:28px;color:var(--deep);margin-bottom:8px}
.admin__tip{font-size:14px;color:var(--gray);margin-bottom:28px}
.admin__group{border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:18px;background:#fff}
.admin__group h3{font-size:16px;color:var(--deep);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.admin__field{margin-bottom:14px}
.admin__field label{display:block;font-size:13px;color:var(--gray);margin-bottom:5px}
.admin__field input,.admin__field textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;
  font-size:14px;font-family:inherit;
}
.admin__field textarea{min-height:70px;resize:vertical}
.admin__actions{
  display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;position:sticky;bottom:20px;
  background:#fff;padding:16px;border-radius:12px;box-shadow:0 -4px 20px rgba(47,62,102,.08);
}

/* ---------- 动画 ---------- */
.fade{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.fade.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:992px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:1fr}
  .hero__points,.strip{grid-template-columns:1fr}
  .nav__links,.nav__cta{display:none}
  .nav__toggle{display:block}
  .nav__links.is-open{
    display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;
    background:#fff;padding:20px 24px;gap:18px;border-bottom:1px solid var(--line);
    box-shadow:0 8px 20px rgba(47,62,102,.08);
  }
  .hero__title{font-size:36px}
  .section__title{font-size:27px}
}
@media(max-width:600px){
  .grid--4{grid-template-columns:1fr}
  .container{padding:0 18px}
}

/* ============================================================
   后台登录页 —— 对齐主体网站（web/LoginView.vue）视觉
   左：品牌渐变叙事 ｜ 右：白底表单卡片
   ============================================================ */
.login-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:24px;background:var(--white);
}
.login-grid{
  width:1040px;max-width:100%;min-height:560px;display:grid;grid-template-columns:1fr 1fr;
  border-radius:22px;overflow:hidden;background:#fff;
  box-shadow:0 30px 80px rgba(47,62,102,.18),0 4px 12px rgba(31,35,41,.06);
}
.login-aside{
  position:relative;padding:56px 48px;display:flex;align-items:center;color:var(--deep);
  background:linear-gradient(160deg,var(--blue) 0%,var(--light) 55%,var(--white) 100%);
}
.login-aside::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 600px at 90% 10%,rgba(95,134,255,.35),transparent 60%);
}
.login-inner{position:relative;width:100%}
.login__brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--deep);margin-bottom:28px}
.login__logo{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.75);display:flex;align-items:center;justify-content:center}
.login__logo::after{content:"";width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:inset 0 0 0 4px var(--blue)}
.login__badge{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.75);margin-bottom:24px;
}
.login__title{font-size:44px;font-weight:800;line-height:1.2;margin-bottom:18px}
.login__title em{font-style:normal;background:linear-gradient(120deg,var(--deep) 0%,var(--blue) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.login__lede{font-size:15px;line-height:1.7;color:rgba(47,62,102,.85);margin-bottom:32px}
.login__feats{display:grid;gap:14px;margin-bottom:40px}
.login__feat{display:flex;gap:12px;align-items:flex-start;padding:12px 16px;border-radius:14px;background:rgba(255,255,255,.28);border:1px solid rgba(255,255,255,.55)}
.login__feat i{font-style:normal;flex:none;width:36px;height:36px;border-radius:10px;background:rgba(95,134,255,.18);color:var(--deep);display:flex;align-items:center;justify-content:center;font-size:16px}
.login__feat b{display:block;font-size:14.5px;font-weight:600;color:var(--deep);margin-bottom:2px}
.login__feat span{font-size:12.5px;color:rgba(47,62,102,.78);line-height:1.55}

.login-main{padding:48px 40px;display:flex;align-items:center;justify-content:center;background:#fff}
.login-card{width:100%;max-width:380px}
.login-card .card-title{font-size:26px;font-weight:800;color:var(--deep);margin-bottom:8px;letter-spacing:-.3px}
.login-card .card-desc{font-size:14px;color:var(--gray);margin-bottom:24px}
.fm{margin-bottom:16px}
.fm label{display:block;font-size:13px;color:var(--gray);font-weight:500;margin-bottom:6px}
.fm input{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-family:inherit;transition:border-color .2s,box-shadow .2s;
}
.fm input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(95,134,255,.15)}
.login-btn{
  width:100%;height:46px;border:none;border-radius:10px;font-size:15px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--blue),var(--light));box-shadow:0 8px 20px rgba(95,134,255,.25);
  cursor:pointer;transition:transform .2s,box-shadow .2s;
}
.login-btn:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(95,134,255,.35)}
.login-err{color:#E5484D;font-size:13px;margin-top:10px;min-height:18px}
.login-hint{font-size:12.5px;color:var(--gray);margin-top:18px;text-align:center}
.login-back{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--gray);margin-top:20px}
.login-back:hover{color:var(--blue)}
@media(max-width:960px){
  .login-grid{grid-template-columns:1fr}
  .login-aside{padding:40px 28px}
  .login__title{font-size:32px}
  .login-main{padding:36px 24px}
}

/* ============================================================
   交互与动效层 —— 对齐主体网站 web/interactions.css 设计原则
   1) 一次只动一个属性 2) 反馈 150ms 3) 键盘可达 4) 减弱动效降级
   ============================================================ */
.press-scale{transition:transform .15s ease-out;-webkit-tap-highlight-color:transparent}
.press-scale:active{transform:scale(.97)}
.press-card{transition:transform .15s ease-out,box-shadow .15s ease-out}
.press-card:active{transform:scale(.985);box-shadow:0 1px 2px rgba(47,62,102,.06)}
.hover-lift{transition:transform .2s ease-out,box-shadow .2s ease-out}
.hover-lift:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(47,62,102,.12)}
/* 触摸设备去除 hover 残留（对齐主体网站） */
@media(hover:none){
  .hover-lift:hover{transform:none;box-shadow:none}
}
/* 键盘焦点环（只在键盘导航时出现） */
:where(a,button,input,textarea,[tabindex]):focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(95,134,255,.35);border-radius:8px;
}
/* 减弱动效降级（保留反馈，只是不动） */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .press-scale:active,.press-card:active{transform:none;opacity:.7}
  .hover-lift:hover{transform:none}
}

/* 后台顶栏（登录后） */
.admin-bar{
  position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);
  padding:14px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.admin-bar__who{font-size:13px;color:var(--gray)}
.admin-bar__who b{color:var(--deep)}

/* ============================================================
   官网区块（完整复刻 web/SiteHomeView.vue）
   ============================================================ */
/* ---------- 顶部导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.7);
  backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid transparent;
  transition:background .25s,border-color .25s,box-shadow .25s;
}
.site-nav.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--site-border);
  box-shadow:0 2px 12px rgba(15,87,189,.04);
}
.site-nav__inner{
  max-width:1200px;margin:0 auto;height:64px;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.site-nav__brand{display:flex;align-items:center;gap:10px;color:var(--site-text);font-weight:700;font-size:15px}
.site-nav__logo{
  width:26px;height:26px;border-radius:8px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--site-primary) 0%,var(--site-accent) 100%);
  box-shadow:0 4px 12px rgba(95,134,255,.25);
}
.site-nav__logo::after{
  content:"";position:absolute;inset:8px;border-radius:50%;background:#fff;
  box-shadow:inset 0 0 0 4px var(--site-primary),0 0 0 2px rgba(255,255,255,.7);
}
.site-nav__menu{display:flex;gap:26px}
.site-nav__menu a{font-size:14px;color:var(--site-text-2);transition:color .2s}
.site-nav__menu a:hover{color:var(--site-text)}
.site-nav__menu a.is-active{color:var(--site-primary);font-weight:600}
.site-nav__cta{display:flex;align-items:center;gap:12px}
.site-nav__btn{
  display:inline-flex;align-items:center;padding:8px 18px;border-radius:999px;
  background:var(--site-primary);color:#fff;font-size:13px;font-weight:600;transition:all .2s;
}
.site-nav__btn:hover{background:var(--site-primary-deep)}
@media(max-width:992px){
  .site-nav__menu{
    display:none;position:absolute;top:64px;left:0;right:0;background:#fff;
    flex-direction:column;padding:16px 24px;gap:16px;border-bottom:1px solid var(--site-border);
  }
  .site-nav__menu.is-open{display:flex}
}

/* ---------- Hero ---------- */
.site-hero{
  position:relative;padding:140px 24px 80px;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 20% -10%,rgba(95,134,255,.10),transparent 60%),
    radial-gradient(900px 500px at 95% 10%,rgba(124,93,239,.10),transparent 60%),
    linear-gradient(180deg,#f8faff 0%,#ffffff 100%);
}
.site-hero__bg{position:absolute;inset:0;pointer-events:none}
.orbit{position:absolute;border-radius:50%;border:1px dashed rgba(95,134,255,.18)}
.orbit--lg{width:720px;height:720px;left:-180px;top:-160px}
.orbit--md{width:480px;height:480px;right:-120px;top:-40px;border-color:rgba(124,93,239,.18)}
.orbit--sm{width:320px;height:320px;right:8%;top:60%;border-color:rgba(242,106,62,.18)}
.site-hero__inner{
  max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.05fr 1fr;
  gap:56px;align-items:center;position:relative;z-index:2;
}
.site-hero__badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:linear-gradient(135deg,rgba(95,134,255,.08),rgba(124,93,239,.08));
  border:1px solid rgba(95,134,255,.15);
  font-size:12px;color:var(--site-primary);font-weight:600;
}
.site-hero__title{
  font-size:56px;font-weight:800;line-height:1.15;color:var(--site-text);
  margin:20px 0 0;letter-spacing:-.5px;
}
.site-hero__rotator{color:var(--site-primary)}
.caret{
  display:inline-block;width:2px;height:.95em;background:var(--site-primary);
  vertical-align:-.12em;margin-left:2px;animation:blink 1s steps(2,start) infinite;
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.site-hero__lede{
  font-size:16px;color:var(--site-text-2);line-height:1.8;margin:20px 0 0;max-width:560px;
}
.site-hero__ctas{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.site-hero__ctas .btn--primary,
.join .btn--primary{
  background:linear-gradient(135deg,var(--site-primary),var(--site-primary-deep));
  border-color:var(--site-primary);box-shadow:0 8px 20px rgba(95,134,255,.25);
}
/* 浅底区块的次要按钮：改为白底描边（官网同款，避免白字不可见） */
.site-hero__ctas .btn--ghost,
.pain__summary .btn--ghost{
  background:#fff;border:1px solid var(--site-border);color:var(--site-text-2);
}
.site-hero__chips{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap}
.chip{
  padding:6px 12px;border-radius:999px;background:#fff;border:1px solid var(--site-border);
  font-size:12px;color:var(--site-text-2);
}
.site-hero__art{position:relative;height:420px}
.ring{position:absolute;border-radius:50%;border:1px dashed rgba(95,134,255,.18);left:50%;top:50%;transform:translate(-50%,-50%)}
.ring--lg{width:320px;height:320px}
.ring--md{width:220px;height:220px;border-color:rgba(124,93,239,.18)}
.ring--sm{
  width:140px;height:140px;border:none;
  background:linear-gradient(135deg,var(--site-primary),var(--site-purple));
  box-shadow:0 18px 50px rgba(95,134,255,.35);
}
.float-card{
  position:absolute;display:flex;gap:10px;align-items:center;padding:12px 16px;background:#fff;
  border-radius:14px;border:1px solid rgba(15,23,42,.04);
  box-shadow:0 12px 32px rgba(15,23,42,.08),0 1px 0 rgba(255,255,255,.9) inset;
  animation:floaty 6s ease-in-out infinite;
}
.float-card__ic{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  font-size:16px;color:#fff;background:var(--site-primary);flex:none;
}
.float-card--b .float-card__ic{background:var(--site-accent)}
.float-card--c .float-card__ic{background:#12a884}
.float-card--d .float-card__ic{background:var(--site-purple)}
.float-card__txt{display:flex;flex-direction:column;line-height:1.2}
.float-card__txt b{font-size:14px;color:var(--site-text)}
.float-card__txt span{font-size:11px;color:var(--site-text-3);margin-top:2px}
.float-card--a{left:6%;top:12%;animation-delay:0s}
.float-card--b{right:8%;top:24%;animation-delay:1.2s}
.float-card--c{left:10%;bottom:16%;animation-delay:2.4s}
.float-card--d{right:4%;bottom:8%;animation-delay:3.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.site-hero__scroll{
  position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:22px;height:36px;border:1.5px solid var(--site-text-3);border-radius:12px;
  display:grid;place-items:start center;padding-top:6px;z-index:3;
}
.site-hero__scroll span{display:block;width:3px;height:6px;background:var(--site-text-3);border-radius:2px}

/* ---------- 信任指标 ---------- */
.metrics{
  background:var(--site-bg);border-top:1px solid var(--site-border);
  border-bottom:1px solid var(--site-border);padding:36px 24px;
}
.metrics__inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.metrics__cell{text-align:center;display:flex;flex-direction:column;gap:6px}
.metrics__cell strong{
  font-size:34px;font-weight:800;letter-spacing:-.5px;
  background:linear-gradient(135deg,var(--site-primary),var(--site-purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metrics__cell span{color:var(--site-text-2);font-size:14px}

/* ---------- 三角色入口 ---------- */
.roles{padding:96px 24px;background:var(--site-bg)}
.roles__head,.system__head,.capability__head,.pain__head,.opc__head{
  text-align:center;max-width:760px;margin:0 auto 44px;
}
.roles__head h2,.system__head h2,.capability__head h2,.pain__head h2,.opc__head h2{
  font-size:34px;font-weight:800;color:var(--site-text);margin-bottom:14px;line-height:1.35;
}
.roles__head p,.system__head p,.capability__head p,.pain__head p,.opc__head p{
  color:var(--site-text-2);font-size:16px;line-height:1.8;
}
.roles__tabs{display:flex;gap:12px;justify-content:center;margin-bottom:36px;flex-wrap:wrap}
.role-tab{
  padding:10px 22px;border-radius:999px;border:1px solid var(--site-border);background:#fff;
  font-size:14px;color:var(--site-text-2);cursor:pointer;transition:all .2s;font-family:inherit;
}
.role-tab:hover{border-color:var(--site-primary);color:var(--site-text)}
.role-tab.is-active{background:var(--site-primary);border-color:var(--site-primary);color:#fff;font-weight:600}
.roles__panel{
  max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;
  padding:36px;border:1px solid var(--site-border);border-radius:var(--site-radius-lg);background:#fff;
}
.roles__panel-copy h3{font-size:24px;font-weight:700;color:var(--site-text);margin-bottom:12px;line-height:1.4}
.roles__panel-copy>p{color:var(--site-text-2);font-size:15px;line-height:1.8;margin-bottom:24px}
.roles__points{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:18px}
.roles__points li{display:flex;gap:12px;align-items:flex-start}
.roles__points li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--site-primary);margin-top:8px;
}
.roles__points b{display:block;font-size:15px;color:var(--site-text);margin-bottom:4px}
.roles__points span{color:var(--site-text-2);font-size:13.5px;line-height:1.6}
.roles__panel-art{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:10px;align-content:center;height:300px;
}
.art-bullet{
  padding:9px 14px;border-radius:10px;background:var(--site-bg-soft);border:1px solid var(--site-border);
  font-size:12.5px;color:var(--site-text-2);text-align:center;
}
.art-orb{
  position:absolute;left:50%;top:50%;width:120px;height:120px;transform:translate(-50%,-50%);
  border-radius:50%;background:linear-gradient(135deg,var(--site-primary),var(--site-purple));opacity:.14;
}

/* ---------- 协作系统 4 层 ---------- */
.system{padding:96px 24px;background:var(--site-bg-soft)}
.system__layers{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.layer{
  background:#fff;border:1px solid var(--site-border);border-radius:var(--site-radius-lg);
  padding:28px 24px;transition:transform .25s,box-shadow .25s;
}
.layer:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,23,42,.07)}
.layer__no{font-size:13px;font-weight:800;color:var(--site-primary);letter-spacing:1px}
.layer__title{margin-top:10px}
.layer__title b{display:block;font-size:17px;color:var(--site-text)}
.layer__title span{font-size:11px;color:var(--site-text-3);letter-spacing:1px}
.layer__desc{color:var(--site-text-2);font-size:14px;line-height:1.7;margin:14px 0 18px}
.layer__chips{display:flex;flex-wrap:wrap;gap:6px}
.layer__chips span{
  padding:4px 10px;border-radius:999px;background:var(--site-bg-soft);
  color:var(--site-text-2);font-size:11.5px;
}

/* ---------- 三层能力 ---------- */
.capability{padding:96px 24px;background:var(--site-bg)}
.capability__grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{
  border:1px solid var(--site-border);background:#fff;border-radius:var(--site-radius-lg);
  padding:32px 26px;transition:transform .25s,box-shadow .25s;
}
.cap:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,23,42,.07)}
.cap__ic{
  width:46px;height:46px;border-radius:12px;background:rgba(95,134,255,.1);
  color:var(--site-primary);display:grid;place-items:center;font-size:20px;margin-bottom:16px;
}
.cap__sub{font-size:11px;color:var(--site-text-3);text-transform:uppercase;letter-spacing:1px}
.cap__t{font-size:18px;font-weight:700;color:var(--site-text);margin:8px 0 12px}
.cap__d{color:var(--site-text-2);font-size:14px;line-height:1.7;margin:0 0 16px}
.cap ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.cap ul li{font-size:13px;color:var(--site-text);padding-left:16px;position:relative}
.cap ul li::before{
  content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--site-primary);
}

/* ---------- 企业痛点 ---------- */
.pain{padding:96px 24px;background:var(--site-bg-soft)}
.pain__grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pain__cell{
  background:#fff;border:1px solid var(--site-border);border-radius:var(--site-radius);padding:24px 22px;
}
.pain__cell h4{font-size:16px;color:var(--site-text);margin-bottom:10px}
.pain__cell p{font-size:13.5px;color:var(--site-text-2);line-height:1.7}
.pain__summary{max-width:1100px;margin:32px auto 0;text-align:center}
.pain__summary p{color:var(--site-text-2);font-size:15px;line-height:1.8;margin-bottom:20px}

/* ---------- OPC 价值 + 5 步 ---------- */
.opc{padding:96px 24px;background:var(--site-bg)}
.opc__values{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.opc__value{
  text-align:center;padding:26px 20px;background:#fff;border:1px solid var(--site-border);
  border-radius:var(--site-radius);
}
.opc__value-ic{
  width:44px;height:44px;margin:0 auto 14px;border-radius:12px;background:rgba(95,134,255,.1);
  color:var(--site-primary);display:grid;place-items:center;font-size:18px;
}
.opc__value h4{font-size:16px;color:var(--site-text);margin-bottom:8px}
.opc__value p{font-size:13px;color:var(--site-text-2);line-height:1.7}
.opc__steps{
  max-width:900px;margin:56px auto 0;background:#fff;border:1px solid var(--site-border);
  border-radius:var(--site-radius-lg);padding:36px 32px;
}
.opc__steps h3{font-size:20px;color:var(--site-text);text-align:center;margin-bottom:28px}
.opc__steps ol{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.opc__steps li{display:flex;gap:14px;align-items:flex-start}
.opc__step-no{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--site-primary);color:#fff;
  font-size:12px;font-weight:700;display:grid;place-items:center;
}
.opc__steps li b{display:block;font-size:15px;color:var(--site-text);margin-bottom:4px}
.opc__steps li span{font-size:13px;color:var(--site-text-2);line-height:1.6}
.opc__cta{text-align:center;margin-top:28px}

/* ---------- 加入 CTA ---------- */
.join{
  position:relative;padding:96px 24px;text-align:center;color:#fff;overflow:hidden;
  background:linear-gradient(135deg,var(--site-primary-deep),var(--site-primary));
}
.join__bg{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(800px 400px at 50% 0%,rgba(255,255,255,.14),transparent 60%);
}
.join h2{font-size:34px;font-weight:800;margin-bottom:14px;position:relative}
.join p{color:rgba(255,255,255,.85);font-size:16px;margin-bottom:28px;position:relative}
.join__ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;position:relative}
.join .btn--ghost{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.4);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#0d1220;color:rgba(255,255,255,.65);padding:64px 24px 28px}
.site-footer__top{
  max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.2fr 2fr;gap:48px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08);
}
.site-footer__logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer__logo-dot{
  width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--site-primary),var(--site-accent));flex:none;
}
.site-footer__logo b{color:#fff;font-size:15px}
.site-footer__brand p{font-size:13px;line-height:1.8;margin-bottom:6px}
.site-footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.site-footer__col h5{color:#fff;font-size:14px;margin-bottom:14px}
.site-footer__col ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.site-footer__col a{font-size:13px;color:rgba(255,255,255,.6);transition:color .2s}
.site-footer__col a:hover{color:#fff}
.site-footer__contact li{font-size:13px;line-height:1.8}
.site-footer__qr{margin-top:16px}
.site-footer__qr-box{
  width:88px;height:88px;border-radius:10px;background:rgba(255,255,255,.08);
  display:grid;place-items:center;font-size:11px;color:rgba(255,255,255,.5);
}
.site-footer__bottom{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding-top:20px;font-size:12.5px;flex-wrap:wrap;
}
.site-footer__legal{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- 官网响应式（对齐正式版断点） ---------- */
@media(max-width:992px){
  .site-hero{padding:110px 20px 60px}
  .site-hero__inner{grid-template-columns:1fr;gap:32px}
  .site-hero__title{font-size:40px}
  .site-hero__art{height:320px}
  .site-nav__menu{display:none}
  .metrics__inner{grid-template-columns:repeat(2,1fr);gap:20px}
  .roles__panel{grid-template-columns:1fr;padding:28px;gap:32px}
  .system__layers{grid-template-columns:repeat(2,1fr)}
  .capability__grid{grid-template-columns:1fr}
  .pain__grid{grid-template-columns:repeat(2,1fr)}
  .opc__values{grid-template-columns:repeat(2,1fr)}
  .opc__steps{padding:28px 20px}
  .site-footer__top{grid-template-columns:1fr;gap:36px}
  .site-footer__cols{grid-template-columns:1fr 1fr;gap:24px}
  .site-footer__bottom{flex-direction:column;gap:12px}
  .roles__head h2,.system__head h2,.capability__head h2,
  .pain__head h2,.opc__head h2{font-size:28px}
  .join h2{font-size:28px}
}
@media(max-width:600px){
  .system__layers,.pain__grid,.opc__values{grid-template-columns:1fr}
  .site-footer__cols{grid-template-columns:1fr}
  .site-hero__title{font-size:32px}
}

/* ============================================================
   后台：左侧栏目菜单（与前端官网栏目对齐，便于日常管理）
   ============================================================ */
.admin-layout{
  display:grid;grid-template-columns:220px 1fr;gap:24px;
  max-width:1280px;margin:0 auto;padding:24px;align-items:start;
}
.admin-side{
  position:sticky;top:84px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:16px;
}
.admin-side__title{font-size:13px;font-weight:700;color:var(--deep);margin-bottom:12px;padding-left:10px}
.side-menu{display:flex;flex-direction:column;gap:4px}
.side-menu__item{
  text-align:left;padding:9px 12px;border:none;background:transparent;border-radius:9px;
  font-size:13.5px;color:var(--gray);cursor:pointer;transition:background .2s,color .2s;font-family:inherit;
}
.side-menu__item:hover{background:var(--white);color:var(--deep)}
.side-menu__item.is-active{background:rgba(95,134,255,.12);color:var(--blue);font-weight:600}
.admin-side__tip{font-size:11.5px;color:var(--gray);margin-top:14px;padding-left:10px;line-height:1.7}
.admin-main{min-width:0}
/* 后台内容区置于 layout 内，取消原居中宽度与过大顶部留白 */
.admin{padding:0 0 60px;max-width:none;margin:0}
.admin__group--sub{background:var(--white);border-style:dashed}
@media(max-width:992px){
  .admin-layout{grid-template-columns:1fr;gap:16px}
  .admin-side{position:static;overflow-x:auto}
  .side-menu{flex-direction:row;gap:8px}
  .side-menu__item{white-space:nowrap}
  .admin-side__tip{display:none}
}

/* ============================================================
   适老化优化（面向年长用户 · 手机访问）
   原则：字号更大、点击区更大（≥48px）、对比更强、步骤更少
   ============================================================ */
@media(max-width:960px){
  /* 登录页：手机端隐藏品牌叙事区，直接进入表单，少滚动 */
  .login-aside{display:none}
  .login-grid{min-height:auto;border-radius:0;box-shadow:none}
  .login-page{padding:0;align-items:stretch}
  .login-main{padding:28px 20px 40px}
  .login-card{max-width:none}
  .login-card .card-title{font-size:24px}
  .login-card .card-desc{font-size:16px}

  /* 表单：大输入框、大标签（17px 避免 iOS 聚焦缩放） */
  .fm{margin-bottom:22px}
  .fm label{font-size:17px;font-weight:600;color:var(--deep);margin-bottom:10px}
  .fm input{min-height:58px;font-size:17px;padding:0 16px;border-radius:12px}
  .login-btn{min-height:58px;font-size:19px;font-weight:700;border-radius:12px}
  .login-err{font-size:16px;min-height:24px}
  .login-hint{font-size:16px;margin-top:22px;line-height:1.8}
  .login-back{font-size:16px;min-height:48px;display:inline-flex;align-items:center}

  /* 一键填入演示账号：大按钮，避免手动输入 */
  .fill-btn{
    width:100%;min-height:54px;margin-top:14px;font-size:17px;font-weight:600;
    border-radius:12px;border:1px dashed var(--blue);background:rgba(95,134,255,.06);
    color:var(--blue);cursor:pointer;font-family:inherit;
  }
  .fill-btn:active{background:rgba(95,134,255,.14)}
  /* 显示密码切换 */
  .pwd-wrap{position:relative}
  .pwd-toggle{
    position:absolute;right:12px;top:50%;transform:translateY(-50%);
    min-width:64px;min-height:44px;border:none;background:transparent;
    font-size:15px;color:var(--blue);cursor:pointer;font-family:inherit;font-weight:600;
  }
}

/* 管理端：整体加大字号与点击区（全尺寸生效，便于阅读） */
.admin__field label{font-size:16px;font-weight:600;color:var(--deep);margin-bottom:8px}
.admin__field input,.admin__field textarea{
  font-size:17px;min-height:52px;padding:14px 16px;border-radius:10px;line-height:1.6;
}
.admin__field textarea{min-height:96px}
.admin__group h3{font-size:18px;padding-bottom:12px;margin-bottom:16px}
.admin h1{font-size:26px}
.admin__tip{font-size:16px;line-height:1.9}
.side-menu__item{font-size:16px;padding:13px 16px;min-height:48px}
.admin-side__title{font-size:15px}
.admin-bar__who{font-size:14px}
.btn{min-height:52px;font-size:17px;padding:12px 26px}

/* 移动端操作区：纵向全宽大按钮，防误触 */
@media(max-width:600px){
  .admin{padding:0 0 80px}
  .admin h1{font-size:23px}
  .admin__actions{flex-direction:column;gap:14px;padding:16px 14px}
  .admin__actions .btn,
  .admin__actions a.btn{width:100%;min-height:58px;font-size:18px;font-weight:600}
  .admin__field label{font-size:17px}
  .admin__field input,.admin__field textarea{font-size:17px;min-height:56px}
  .side-menu__item{font-size:16px;min-height:50px;padding:14px 18px}
  .admin-bar__who{display:none} /* 顶栏省空间 */
}

/* 操作反馈 Toast（替代系统 alert，字号更大、更醒目） */
.kapai-toast{
  position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);
  z-index:9999;max-width:86%;padding:26px 30px;border-radius:16px;
  background:rgba(20,28,45,.96);color:#fff;font-size:19px;line-height:1.7;
  text-align:center;box-shadow:0 18px 44px rgba(0,0,0,.28);
  opacity:0;transition:opacity .25s;pointer-events:none;
}
.kapai-toast.is-show{opacity:1}
.kapai-toast b{display:block;font-size:22px;margin-bottom:10px}

/* 后台底部说明：不起眼（小字、浅色、置底），不干扰主要操作 */
.admin__note{
  margin-top:20px;font-size:14px;color:var(--site-text-3);line-height:1.8;
}
@media(max-width:600px){ .admin__note{font-size:15px;margin-top:16px} }