@charset "UTF-8";
/* ==========================================================================
   众智商学院 · 官网全站基础样式
   设计语言与首页一致：藏青 #1e2a78 + 克莱因蓝 #3b5bfd + 珊瑚红 #ff5a5f
   全站内容宽度统一 max-width: 1200px
   移动端优先：导航为按钮式（纯 CSS checkbox，无 JS 依赖）
   ========================================================================== */

:root{
  --navy:#1e2a78;
  --navy-dark:#16205c;
  --blue:#3b5bfd;
  --blue-soft:#eef2ff;
  --coral:#ff5a5f;
  --coral-dark:#e94b50;
  --coral-soft:#fff1f1;
  --ink:#111827;
  --ink-soft:#4b5563;
  --ink-mute:#9ca3af;
  --bg:#f7f8fc;
  --card:#ffffff;
  --line:#e9ebf3;
  --wrap:1200px;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:15px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

a{text-decoration:none;color:inherit;}
img{max-width:100%;height:auto;display:block;}
input,select,textarea,button{font-family:inherit;}
ul,ol{list-style:none;}

/* ===== 动画 ===== */
@keyframes float-y{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}
@keyframes pulse-ring{0%{transform:scale(.9);opacity:.7;}100%{transform:scale(1.8);opacity:0;}}
@keyframes riseIn{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}

.rv{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.8,.3,1),transform .7s cubic-bezier(.2,.8,.3,1);}
.rv.in{opacity:1;transform:translateY(0);}
/* 无 JS 时兜底：1.5 秒后自动显示，避免内容永久不可见 */
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;}}

/* ===== 顶部条 ===== */
.top-strip{background:var(--navy-dark);color:rgba(255,255,255,.85);font-size:.8rem;padding:9px 0;}
.top-strip .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.top-strip .flash{display:inline-flex;align-items:center;gap:8px;}
.top-strip .dot-live{width:8px;height:8px;border-radius:50%;background:#4ade80;position:relative;flex-shrink:0;}
.top-strip .dot-live::after{content:"";position:absolute;inset:0;border-radius:50%;background:#4ade80;animation:pulse-ring 1.8s infinite;}
.top-strip a{color:#ffd166;font-weight:600;}
.top-strip a:hover{text-decoration:underline;}
.top-strip .ts-r{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.top-strip .ts-r .sep{color:rgba(255,255,255,.25);}

/* ===== 统一容器 ===== */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}

/* ===== 导航（移动端为按钮式，纯 CSS） ===== */
.mainnav{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.mainnav.stuck{box-shadow:0 6px 24px rgba(17,24,39,.06);}
.mainnav .wrap{height:72px;display:flex;align-items:center;flex-wrap:nowrap;position:relative;}

.nav-toggle-cb{display:none;}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand .logo{
  width:40px;height:40px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--navy));
  color:#fff;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:1.15rem;
  box-shadow:0 8px 20px rgba(59,91,253,.28);
}
.brand .name{display:block;font-size:1.15rem;font-weight:800;color:var(--navy);letter-spacing:.3px;white-space:nowrap;}
.brand .sub{display:block;font-size:.68rem;color:var(--ink-mute);letter-spacing:1.5px;margin-top:-2px;white-space:nowrap;}

.navlist{
  margin-left:auto;display:flex;align-items:center;gap:26px;
  font-size:.93rem;font-weight:500;color:var(--ink-soft);
}
.navlist a{position:relative;padding:4px 0;transition:color .25s;white-space:nowrap;flex-shrink:0;}
.navlist a::after{content:"";position:absolute;left:50%;bottom:-6px;width:0;height:2px;background:var(--blue);transition:width .3s,left .3s;}
.navlist a:hover{color:var(--navy);}
.navlist a:hover::after{width:100%;left:0;}
.navlist a.on{color:var(--navy);font-weight:700;}
.navlist a.on::after{width:100%;left:0;}
.navlist .btn-nav{
  background:var(--coral);color:#fff !important;
  padding:11px 24px;border-radius:999px;
  font-weight:700;font-size:.88rem;
  box-shadow:0 8px 20px rgba(255,90,95,.28);
  transition:transform .2s,box-shadow .2s,background .2s;
}
.navlist .btn-nav::after{display:none;}
.navlist .btn-nav:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,95,.38);}
.navlist .nav-tel{color:var(--coral);font-weight:800;font-size:.95rem;}

/* 汉堡按钮 */
.menu-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;flex-shrink:0;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--navy);border-radius:2px;transition:transform .28s,opacity .2s;}
.nav-toggle-cb:checked ~ .menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle-cb:checked ~ .menu-toggle span:nth-child(2){opacity:0;}
.nav-toggle-cb:checked ~ .menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== HERO ===== */
.hero{
  position:relative;padding:70px 0 90px;overflow:hidden;
  background:
    radial-gradient(ellipse 900px 600px at 85% 10%,rgba(59,91,253,.1),transparent 60%),
    radial-gradient(ellipse 700px 500px at 5% 90%,rgba(255,90,95,.07),transparent 60%),
    #fff;
}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2;}

.hero-copy .pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--blue-soft);color:var(--navy);
  font-size:.8rem;font-weight:700;
  padding:8px 16px;border-radius:999px;margin-bottom:22px;
}
.hero-copy .pill .star{color:var(--coral);}
.hero-copy h1{font-size:2.9rem;line-height:1.25;font-weight:800;letter-spacing:-.8px;color:var(--ink);margin-bottom:22px;}
.hero-copy h1 .grad{background:linear-gradient(120deg,var(--blue),var(--navy));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero-copy h1 .coral{color:var(--coral);}
.hero-copy .lead{font-size:1rem;color:var(--ink-soft);line-height:1.85;margin-bottom:32px;max-width:540px;}

.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px;}
.btn-main{
  background:var(--coral);color:#fff;padding:15px 40px;border-radius:999px;
  font-weight:700;font-size:1rem;box-shadow:0 12px 28px rgba(255,90,95,.32);
  transition:transform .2s,box-shadow .2s,background .2s;
  display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;
}
.btn-main:hover{transform:translateY(-3px);background:var(--coral-dark);box-shadow:0 16px 36px rgba(255,90,95,.42);}
.btn-second{
  background:#fff;color:var(--navy);border:1.5px solid var(--line);
  padding:15px 34px;border-radius:999px;font-weight:700;font-size:1rem;
  transition:all .2s;display:inline-flex;align-items:center;gap:8px;
}
.btn-second:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft);}

.hero-trust{display:flex;align-items:center;gap:18px;padding-top:28px;border-top:1px solid var(--line);flex-wrap:wrap;}
.trust-avatars{display:flex;}
.trust-avatars .av{
  width:36px;height:36px;border-radius:50%;border:2px solid #fff;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:.82rem;margin-left:-10px;
}
.trust-avatars .av:first-child{margin-left:0;}
.av.a1{background:linear-gradient(135deg,#3b5bfd,#1e2a78);}
.av.a2{background:linear-gradient(135deg,#ff5a5f,#e94b50);}
.av.a3{background:linear-gradient(135deg,#8b5cf6,#6d28d9);}
.av.a4{background:linear-gradient(135deg,#14b8a6,#0d9488);}
.trust-text{font-size:.84rem;color:var(--ink-soft);}
.trust-text strong{color:var(--ink);}

/* Hero 右侧报名卡 */
.hero-card{background:#fff;border-radius:24px;padding:32px 30px;box-shadow:0 30px 70px rgba(30,42,120,.14);border:1px solid var(--line);position:relative;}
.hero-card::before{content:"";position:absolute;top:0;left:32px;right:32px;height:3px;background:linear-gradient(90deg,var(--blue),var(--coral));border-radius:0 0 3px 3px;}
.hero-card .ch{display:flex;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:22px;}
.hero-card .ch h2,.hero-card .ch h3{font-size:1.1rem;font-weight:800;color:var(--navy);}
.hero-card .ch .badge{background:var(--coral-soft);color:var(--coral);font-size:.74rem;font-weight:700;padding:4px 12px;border-radius:999px;}
.hero-card .ch .badge::before{content:"🔥 ";}
.proj-row{
  display:flex;align-items:center;gap:14px;padding:14px;border-radius:14px;
  border:1px solid var(--line);margin-bottom:10px;transition:all .25s;
}
.proj-row:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateX(4px);}
.proj-row .ic{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;}
.ic.c1{background:#eef2ff;}
.ic.c2{background:#ecfdf5;}
.ic.c3{background:#fff7ed;}
.ic.c4{background:#fdf4ff;}
.proj-row .tt{flex:1;min-width:0;display:block;}
.proj-row .tt .n{display:block;font-size:.94rem;font-weight:700;color:var(--ink);}
.proj-row .tt .d{display:block;font-size:.76rem;color:var(--ink-mute);margin-top:2px;}
.proj-row .arr{color:var(--ink-mute);font-size:.95rem;flex-shrink:0;}
.hero-card .cf{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--ink-mute);}
.hero-card .cf strong{color:var(--coral);font-size:1.15rem;font-weight:800;}

.float-tag{
  position:absolute;background:#fff;border-radius:14px;padding:12px 16px;
  box-shadow:0 16px 36px rgba(30,42,120,.14);
  font-size:.8rem;font-weight:700;display:flex;align-items:center;gap:8px;border:1px solid var(--line);
}
.float-tag.t1{top:-18px;left:-26px;animation:float-y 6s ease-in-out infinite;}
.float-tag.t2{bottom:-22px;right:-20px;animation:float-y 8s ease-in-out infinite reverse;}
.float-tag .em{font-size:1.05rem;}

/* ===== 数据条 ===== */
.data-strip{background:var(--navy);color:#fff;padding:34px 0;}
.data-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.d-cell{text-align:center;padding:10px;border-right:1px solid rgba(255,255,255,.1);}
.d-cell:last-child{border-right:none;}
.d-cell .v{font-size:2rem;font-weight:800;color:#ffd166;letter-spacing:-.5px;line-height:1;}
.d-cell .v small{font-size:.95rem;font-weight:700;}
.d-cell .l{font-size:.82rem;color:rgba(255,255,255,.7);margin-top:8px;}

/* ===== 区块 ===== */
.section{padding:80px 0;}
.section.alt{background:#fff;}
.section.grey{background:var(--bg);}

.sec-title{margin-bottom:48px;}
.sec-title.mid{text-align:center;}
.sec-title .k{display:inline-block;font-size:.74rem;font-weight:800;color:var(--blue);letter-spacing:3px;background:var(--blue-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px;}
.sec-title h2{font-size:2rem;font-weight:800;letter-spacing:-.4px;line-height:1.35;color:var(--ink);margin-bottom:12px;}
.sec-title h2 .c{color:var(--coral);}
.sec-title p{color:var(--ink-soft);font-size:.95rem;}
.sec-title.mid p{max-width:640px;margin:0 auto;}

/* ===== 优势卡片 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.adv{background:#fff;border-radius:20px;padding:32px 24px;border:1px solid var(--line);transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden;}
.adv:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(30,42,120,.1);border-color:transparent;}
.adv::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--blue-soft),transparent 60%);opacity:0;transition:opacity .3s;pointer-events:none;}
.adv:hover::after{opacity:1;}
.adv .ic-circle{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px;position:relative;z-index:2;}
.adv h3,.adv h4{font-size:1.05rem;font-weight:800;margin-bottom:10px;position:relative;z-index:2;}
.adv p{font-size:.86rem;color:var(--ink-soft);line-height:1.7;position:relative;z-index:2;}

/* ===== 授权资质 ===== */
.auth-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.auth-card{background:#fff;border-radius:20px;padding:30px 24px;border:1px solid var(--line);text-align:center;transition:all .3s;}
.auth-card:hover{border-color:var(--blue);box-shadow:0 20px 44px rgba(59,91,253,.12);transform:translateY(-5px);}
.auth-card .logo-badge{width:64px;height:64px;border-radius:20px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1rem;color:#fff;letter-spacing:.5px;}
.lb1{background:linear-gradient(135deg,#3b5bfd,#1e2a78);}
.lb2{background:linear-gradient(135deg,#14b8a6,#0d9488);}
.lb3{background:linear-gradient(135deg,#f97316,#ea580c);}
.lb4{background:linear-gradient(135deg,#8b5cf6,#6d28d9);}
.auth-card h3,.auth-card h4{font-size:1.02rem;font-weight:800;margin-bottom:6px;}
.auth-card .iss{font-size:.8rem;color:var(--ink-mute);margin-bottom:16px;line-height:1.5;}
.auth-card .tag-pill{display:inline-block;background:var(--coral-soft);color:var(--coral);font-size:.74rem;font-weight:700;padding:5px 14px;border-radius:999px;}

/* ===== 课程卡片 ===== */
.course-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.course{background:#fff;border-radius:24px;padding:34px 30px;border:1px solid var(--line);display:flex;flex-direction:column;position:relative;transition:all .3s;overflow:hidden;}
.course::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--coral));transform:scaleX(0);transform-origin:left;transition:transform .4s;}
.course:hover{transform:translateY(-6px);box-shadow:0 28px 60px rgba(30,42,120,.12);border-color:transparent;}
.course:hover::before{transform:scaleX(1);}
.course .c-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px;gap:12px;}
.course .c-head .title h3{font-size:1.55rem;font-weight:800;color:var(--navy);letter-spacing:-.3px;}
.course .c-head .title .cn{font-size:.88rem;color:var(--ink-soft);font-weight:600;margin-top:2px;}
.course .c-head .ribbon{background:var(--coral-soft);color:var(--coral);font-size:.72rem;font-weight:800;padding:5px 12px;border-radius:999px;letter-spacing:.3px;white-space:nowrap;}
.course .issuer{font-size:.82rem;color:var(--ink-mute);padding:10px 0;margin-bottom:18px;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);}
.course .body{font-size:.88rem;color:var(--ink-soft);line-height:1.7;margin-bottom:20px;}
.course .feat{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin-bottom:24px;}
.course .feat li{font-size:.84rem;color:var(--ink-soft);padding-left:22px;position:relative;}
.course .feat li::before{content:"";position:absolute;left:0;top:6px;width:14px;height:14px;background:var(--blue-soft);border-radius:50%;}
.course .feat li::after{content:"✓";position:absolute;left:4px;top:1px;font-size:.68rem;color:var(--blue);font-weight:800;}
.course .c-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:22px;border-top:1px solid var(--line);gap:12px;}
.course .c-foot .price{font-size:.9rem;font-weight:800;color:var(--coral);}
.course .c-foot .price small{font-weight:500;color:var(--ink-mute);font-size:.76rem;display:block;}
.btn-go{background:var(--navy);color:#fff;padding:12px 30px;border-radius:999px;font-size:.88rem;font-weight:700;border:none;cursor:pointer;transition:all .25s;display:inline-block;}
.btn-go:hover{background:var(--blue);transform:translateY(-2px);box-shadow:0 10px 22px rgba(59,91,253,.3);}

/* ===== 流程 ===== */
.step-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.step{background:#fff;border-radius:18px;padding:26px 20px;border:1px solid var(--line);text-align:center;transition:all .3s;position:relative;}
.step:hover{transform:translateY(-4px);border-color:var(--blue);box-shadow:0 16px 36px rgba(59,91,253,.1);}
.step .n{width:48px;height:48px;margin:0 auto 16px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;font-weight:800;font-size:1.05rem;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 22px rgba(59,91,253,.28);}
.step h3,.step h4{font-size:.96rem;font-weight:800;margin-bottom:8px;}
.step p{font-size:.82rem;color:var(--ink-soft);line-height:1.6;}

/* ===== 师资 ===== */
.teacher-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.tch{background:#fff;border-radius:22px;padding:32px 22px;border:1px solid var(--line);text-align:center;transition:all .3s;}
.tch:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(30,42,120,.1);border-color:transparent;}
.tch .av{width:80px;height:80px;border-radius:24px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:800;color:#fff;}
.av-a{background:linear-gradient(135deg,#3b5bfd,#1e2a78);}
.av-b{background:linear-gradient(135deg,#14b8a6,#0d9488);}
.av-c{background:linear-gradient(135deg,#f97316,#ea580c);}
.av-d{background:linear-gradient(135deg,#8b5cf6,#6d28d9);}
.tch h3,.tch h4{font-size:1.02rem;font-weight:800;margin-bottom:4px;}
.tch .role{font-size:.78rem;color:var(--blue);font-weight:700;margin-bottom:12px;}
.tch p{font-size:.82rem;color:var(--ink-soft);line-height:1.65;}

/* ===== 表格 ===== */
.tbl-box{background:#fff;border-radius:24px;border:1px solid var(--line);overflow:hidden;box-shadow:0 16px 40px rgba(30,42,120,.05);}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.sched,table.dtable{width:100%;border-collapse:collapse;min-width:620px;}
table.sched thead,table.dtable thead{background:var(--navy);}
table.sched th,table.dtable th{color:#fff;text-align:left;padding:18px 22px;font-size:.82rem;font-weight:700;letter-spacing:.5px;white-space:nowrap;}
table.sched td,table.dtable td{padding:20px 22px;font-size:.88rem;color:var(--ink-soft);border-bottom:1px solid var(--line);}
table.sched tbody tr:last-child td,table.dtable tbody tr:last-child td{border-bottom:none;}
table.sched tbody tr:hover,table.dtable tbody tr:hover{background:#f8f9ff;}
table.sched .proj,table.dtable .proj{font-weight:800;color:var(--navy);}

.stat-pill{display:inline-block;padding:5px 13px;border-radius:999px;font-size:.74rem;font-weight:700;white-space:nowrap;}
.sp-hot{background:var(--coral-soft);color:var(--coral);}
.sp-ok{background:#ecfdf5;color:#059669;}
.sp-soon{background:#fff7ed;color:#c2410c;}

.btn-inline{background:var(--blue-soft);color:var(--blue);border:none;cursor:pointer;padding:8px 20px;border-radius:999px;font-weight:700;font-size:.84rem;transition:all .2s;display:inline-block;}
.btn-inline:hover{background:var(--blue);color:#fff;}

/* ===== 报名区块 ===== */
.signup{background:linear-gradient(135deg,#1e2a78 0%,#3b5bfd 100%);position:relative;overflow:hidden;color:#fff;}
.signup::before{content:"";position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(255,90,95,.28),transparent 65%);border-radius:50%;}
.signup::after{content:"";position:absolute;bottom:-120px;left:-80px;width:360px;height:360px;background:radial-gradient(circle,rgba(255,209,102,.18),transparent 65%);border-radius:50%;}
.signup .wrap{position:relative;z-index:2;display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center;}
.sg-copy .k{display:inline-block;background:rgba(255,255,255,.14);color:#fff;font-size:.74rem;font-weight:800;letter-spacing:3px;padding:6px 14px;border-radius:999px;margin-bottom:18px;}
.sg-copy h2{font-size:2.1rem;font-weight:800;line-height:1.35;letter-spacing:-.4px;margin-bottom:20px;}
.sg-copy h2 em{font-style:normal;color:#ffd166;}
.sg-copy p{font-size:.95rem;color:rgba(255,255,255,.8);line-height:1.9;margin-bottom:28px;}
.sg-copy ul li{font-size:.88rem;color:rgba(255,255,255,.9);padding:9px 0 9px 28px;position:relative;}
.sg-copy ul li::before{content:"✓";position:absolute;left:0;top:9px;width:20px;height:20px;border-radius:50%;background:rgba(255,255,255,.16);color:#fff;font-size:.72rem;font-weight:800;display:flex;align-items:center;justify-content:center;}

.form-box{background:#fff;border-radius:24px;padding:40px 36px;box-shadow:0 30px 70px rgba(0,0,0,.28);color:var(--ink);}
.form-box h2,.form-box h3{font-size:1.25rem;font-weight:800;margin-bottom:6px;}
.form-box .sub{font-size:.85rem;color:var(--ink-mute);margin-bottom:26px;}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.fld{display:flex;flex-direction:column;}
.fld.full{grid-column:1 / -1;}
.fld label{font-size:.84rem;font-weight:700;color:var(--ink-soft);margin-bottom:7px;}
.fld label .rq{color:var(--coral);}
.fld input,.fld select,.fld textarea{padding:13px 16px;border:1.5px solid var(--line);border-radius:12px;font-size:.94rem;color:var(--ink);background:#f9fafc;transition:all .2s;outline:none;width:100%;}
.fld textarea{min-height:110px;resize:vertical;line-height:1.7;}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(59,91,253,.1);}
.fld input::placeholder,.fld textarea::placeholder{color:var(--ink-mute);}

.btn-submit{width:100%;padding:16px;background:var(--coral);color:#fff;border:none;border-radius:12px;font-size:1.05rem;font-weight:800;letter-spacing:.5px;cursor:pointer;box-shadow:0 14px 30px rgba(255,90,95,.32);transition:all .25s;margin-top:8px;}
.btn-submit:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 18px 38px rgba(255,90,95,.42);}
.form-tips{display:flex;justify-content:center;gap:18px;margin-top:18px;flex-wrap:wrap;}
.form-tips span{font-size:.78rem;color:var(--ink-mute);display:flex;align-items:center;gap:5px;}
.form-tips span::before{content:"✓";color:#059669;font-weight:800;}

/* ===== 学员评价 ===== */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.vcard{background:#fff;border-radius:22px;padding:30px 26px;border:1px solid var(--line);position:relative;transition:all .3s;}
.vcard:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(30,42,120,.1);border-color:transparent;}
.vcard .q{position:absolute;top:18px;right:24px;font-size:3.4rem;line-height:1;color:var(--blue-soft);font-weight:800;}
.vcard .stars{color:#f59e0b;font-size:.9rem;letter-spacing:2px;margin-bottom:14px;position:relative;z-index:2;}
.vcard .txt{font-size:.9rem;color:var(--ink-soft);line-height:1.8;margin-bottom:20px;position:relative;z-index:2;}
.vcard .who{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line);}
.vcard .who .av2{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;font-weight:800;font-size:.9rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.vcard .who .info .n{font-size:.9rem;font-weight:800;}
.vcard .who .info .m{font-size:.76rem;color:var(--ink-mute);margin-top:2px;}

/* ===== 合作企业 ===== */
.logo-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;}
.lcell{background:#fff;border-radius:14px;border:1px solid var(--line);padding:22px 12px;text-align:center;font-size:.9rem;font-weight:700;color:var(--ink-soft);transition:all .25s;}
.lcell:hover{background:var(--navy);color:#fff;border-color:var(--navy);transform:translateY(-3px);box-shadow:0 14px 30px rgba(30,42,120,.18);}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq{background:#fff;border-radius:16px;border:1px solid var(--line);margin-bottom:12px;overflow:hidden;transition:all .25s;}
.faq.on{border-color:var(--blue);box-shadow:0 14px 32px rgba(59,91,253,.1);}
.faq-h{padding:22px 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:.96rem;font-weight:700;cursor:pointer;transition:color .2s;}
.faq-h:hover{color:var(--blue);}
.faq-h .sym{width:26px;height:26px;border-radius:8px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1rem;transition:all .3s;flex-shrink:0;}
.faq.on .faq-h .sym{background:var(--blue);color:#fff;transform:rotate(45deg);}
.faq-b{max-height:0;overflow:hidden;padding:0 26px;font-size:.88rem;color:var(--ink-soft);line-height:1.85;transition:max-height .35s ease,padding .35s ease;}
.faq.on .faq-b{max-height:600px;padding:0 26px 22px;}
/* 无 JS 兜底：用 details/summary 版 FAQ */
details.faq > summary{cursor:pointer;list-style:none;}
details.faq > summary::-webkit-details-marker{display:none;}
details.faq[open] .faq-b{max-height:none;padding:0 26px 22px;}

/* ===== 关于我们 ===== */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:start;}
.about-copy p{font-size:.94rem;color:var(--ink-soft);line-height:1.95;margin-bottom:16px;}
.about-copy .hl{background:var(--blue-soft);color:var(--navy);padding:2px 8px;border-radius:6px;font-weight:700;}
.about-facts{background:#fff;border-radius:22px;padding:32px 28px;border:1px solid var(--line);box-shadow:0 18px 44px rgba(30,42,120,.06);}
.about-facts h3,.about-facts h4{font-size:.96rem;font-weight:800;color:var(--navy);margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.fact{display:flex;justify-content:space-between;align-items:center;padding:14px 0;font-size:.88rem;color:var(--ink-soft);border-bottom:1px dashed var(--line);gap:12px;}
.fact:last-child{border-bottom:none;}
.fact strong{color:var(--navy);font-weight:800;text-align:right;}

/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.cbox{background:#fff;border-radius:22px;padding:36px 32px;border:1px solid var(--line);transition:all .3s;}
.cbox:hover{box-shadow:0 20px 44px rgba(30,42,120,.08);}
.cbox h3{font-size:1.1rem;font-weight:800;padding-bottom:18px;margin-bottom:24px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;}
.cbox h3 .hi{width:32px;height:32px;border-radius:10px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:.95rem;flex-shrink:0;}
.cinfo{display:flex;gap:12px;margin-bottom:16px;font-size:.92rem;color:var(--ink-soft);line-height:1.7;}
.cinfo .kk{width:22px;text-align:center;flex-shrink:0;}
.cinfo strong{color:var(--ink);font-weight:700;}
.cinfo a{color:var(--blue);font-weight:700;}
.cinfo a:hover{text-decoration:underline;}

.proj-ul li{padding:16px 0;border-bottom:1px dashed var(--line);font-size:.88rem;color:var(--ink-soft);}
.proj-ul li:last-child{border-bottom:none;}
.proj-ul .pn{font-weight:800;color:var(--navy);display:block;margin-bottom:4px;font-size:.94rem;}
.proj-ul .pd{font-size:.8rem;color:var(--ink-mute);}

/* ===== 页脚 ===== */
.foot{background:var(--navy-dark);color:rgba(255,255,255,.62);padding:56px 0 26px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.foot h3,.foot h5{color:#fff;font-size:.94rem;font-weight:800;margin-bottom:18px;}
.foot p,.foot li{font-size:.84rem;line-height:1.95;}
.foot a:hover{color:#ffd166;}
.foot .hot{color:#ffd166;font-size:1.3rem;font-weight:800;margin-top:10px;letter-spacing:.5px;display:block;}
.foot .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot .foot-brand .logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0;}
.foot .foot-brand .nm{color:#fff;font-weight:800;font-size:1rem;}
.foot-base{
  max-width:var(--wrap);margin:36px auto 0;padding:22px 24px 0;
  border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:.78rem;color:rgba(255,255,255,.42);
}
.foot-base .fb-links{margin-bottom:10px;}
.foot-base .fb-links a{color:rgba(255,255,255,.6);}
.foot-base .fb-links a:hover{color:#ffd166;}
.foot-base .fb-links span{color:rgba(255,255,255,.2);margin:0 8px;}
.foot-base .fb-beian{margin-top:8px;display:flex;justify-content:center;align-items:center;gap:14px;flex-wrap:wrap;}
.foot-base .fb-beian a{color:rgba(255,255,255,.62);display:inline-flex;align-items:center;gap:5px;}
.foot-base .fb-beian a:hover{color:#ffd166;text-decoration:underline;}
.foot-base .fb-beian img{display:inline-block;width:16px;height:16px;}

/* ===== 悬浮按钮 ===== */
.float-col{position:fixed;right:22px;bottom:88px;z-index:999;display:flex;flex-direction:column;gap:12px;}
.fbtn{
  width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;color:#fff;cursor:pointer;box-shadow:0 10px 26px rgba(0,0,0,.18);
  transition:transform .2s;position:relative;border:none;text-decoration:none;
}
.fbtn:hover{transform:scale(1.08);}
.fbtn.call{background:linear-gradient(135deg,var(--coral),var(--coral-dark));}
.fbtn.wx{background:linear-gradient(135deg,#10b981,#059669);}
.fbtn.msg{background:linear-gradient(135deg,var(--blue),var(--navy));}
.fbtn.up{background:linear-gradient(135deg,#6b7280,#4b5563);}
.fbtn .tip{
  position:absolute;right:66px;top:50%;transform:translateY(-50%);
  background:#111827;color:#fff;font-size:.8rem;font-weight:600;
  padding:8px 14px;border-radius:10px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s;
}
.fbtn:hover .tip{opacity:1;}

/* ===== 通用提示 ===== */
.notice{background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:12px;padding:14px 18px;font-size:.88rem;line-height:1.7;margin-bottom:20px;}
.notice.ok{background:#ecfdf5;border-color:#a7f3d0;color:#065f46;}
.notice.err{background:#fef2f2;border-color:#fecaca;color:#991b1b;}

/* ===== 导航二级菜单（纯 CSS 悬浮，不依赖 JS） ===== */
.nav-item{position:relative;}
.nav-item > a{display:inline-flex;align-items:center;gap:4px;}
.nav-item .caret{font-style:normal;font-size:.7rem;opacity:.55;transition:transform .25s;}
.nav-item:hover .caret{transform:rotate(180deg);}
.sub-menu{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:288px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 54px rgba(30,42,120,.14);padding:10px;
  opacity:0;visibility:hidden;transition:opacity .22s,transform .22s,visibility .22s;
  z-index:20;
}
.sub-menu::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px;}
.nav-item:hover .sub-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.sub-menu a{display:block;padding:11px 14px;border-radius:10px;transition:background .2s;}
.sub-menu a:hover{background:var(--blue-soft);}
.sub-menu a::after{display:none;}
.sub-menu .st{display:block;font-size:.9rem;font-weight:700;color:var(--ink);}
.sub-menu .sd{display:block;font-size:.76rem;color:var(--ink-mute);margin-top:2px;}
.sub-menu a:hover .st{color:var(--blue);}

/* ===== FAQ 无 JS 版（details/summary） ===== */
details.faq > summary.faq-h{list-style:none;}
details.faq > summary.faq-h::-webkit-details-marker{display:none;}
details.faq[open]{border-color:var(--blue);box-shadow:0 14px 32px rgba(59,91,253,.1);}
details.faq[open] .faq-h .sym{background:var(--blue);color:#fff;transform:rotate(45deg);}
details.faq .faq-b{max-height:none;}

/* ===== 零碎工具类 ===== */
.hide-sm{display:inline;}
.foot-base .fb-copy{margin-top:2px;}
@media (max-width:768px){ .hide-sm{display:none;} }

/* ===== 响应式 ===== */
@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:48px;}
  .hero-copy h1{font-size:2.3rem;}
  .adv-grid,.auth-grid,.teacher-grid{grid-template-columns:repeat(2,1fr);}
  .step-flow{grid-template-columns:repeat(3,1fr);}
  .logo-grid{grid-template-columns:repeat(4,1fr);}
  .signup .wrap{grid-template-columns:1fr;gap:40px;}
  .about-grid{grid-template-columns:1fr;gap:36px;}
  .contact-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .float-tag{display:none;}
}

/* 中等宽度：先把导航压缩，避免横向溢出 */
@media (max-width:1180px){
  .brand .name{font-size:1.02rem;}
  .navlist{gap:16px;font-size:.87rem;}
  .navlist .btn-nav{padding:10px 18px;font-size:.83rem;}
  .navlist .nav-tel{font-size:.88rem;}
}

/* 移动端：导航折叠为按钮式 */
@media (max-width:1040px){
  .menu-toggle{display:flex;}
  .navlist{
    position:absolute;top:100%;left:0;right:0;
    margin-left:0;display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 20px 40px rgba(17,24,39,.12);
    padding:8px 20px 18px;font-size:1rem;
  }
  .nav-toggle-cb:checked ~ .navlist{display:flex;}
  .navlist a{padding:14px 4px;border-bottom:1px solid var(--line);}
  .navlist a::after{display:none;}
  .navlist a.on{color:var(--blue);}
  .navlist .btn-nav{margin-top:14px;text-align:center;border-bottom:none;}
  .navlist .nav-tel{text-align:center;border-bottom:none;padding-bottom:0;}
  /* 二级菜单在手机上改为展开显示 */
  .nav-item{width:100%;}
  .nav-item > a{display:flex;justify-content:space-between;width:100%;}
  .nav-item .caret{display:none;}
  .sub-menu{
    position:static;transform:none;opacity:1;visibility:visible;
    min-width:0;background:transparent;border:none;box-shadow:none;
    padding:0 0 6px 14px;
  }
  .sub-menu a{padding:11px 4px;border-bottom:1px dashed var(--line);}
  .sub-menu a:last-child{border-bottom:none;}
  .sub-menu .sd{display:none;}
}

@media (max-width:768px){
  /* 顶部信息条压成一行，提示语过长时省略，避免占两行把首屏顶下去 */
  .top-strip{font-size:.74rem;padding:7px 0;}
  .top-strip .wrap{flex-wrap:nowrap;gap:10px;}
  .top-strip .flash{min-width:0;flex:1;}
  .top-strip .flash span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .top-strip .ts-r{flex-shrink:0;}
  .top-strip .ts-r a{white-space:nowrap;}

  .hero-copy h1{font-size:1.9rem;}
  .sec-title h2{font-size:1.6rem;}
  .sg-copy h2{font-size:1.55rem;}
  .adv-grid,.auth-grid,.teacher-grid,.course-grid{grid-template-columns:1fr;}
  .step-flow{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:1fr;}
  .logo-grid{grid-template-columns:repeat(2,1fr);}
  .f-grid{grid-template-columns:1fr;}
  .form-box{padding:30px 22px;}
  .section{padding:60px 0;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .data-strip .wrap{grid-template-columns:repeat(2,1fr);gap:24px 12px;}
  .d-cell:nth-child(2){border-right:none;}
  .wrap{padding:0 20px;}
  .brand .name{font-size:1.02rem;}
  .brand .sub{display:none;}
  .float-col{right:14px;bottom:70px;}
  .fbtn{width:48px;height:48px;font-size:1.15rem;}
  .fbtn .tip{display:none;}
}

@media (max-width:480px){
  .hero-copy h1{font-size:1.55rem;}
  .btn-main,.btn-second{padding:13px 26px;font-size:.9rem;}
  .hero-cta{gap:10px;}
  .data-strip .wrap{grid-template-columns:1fr 1fr;}
  .d-cell .v{font-size:1.5rem;}
  .course{padding:26px 22px;}
  .course .c-head .title h3{font-size:1.3rem;}
  .course .feat{grid-template-columns:1fr;}
  .hero{padding:48px 0 64px;}
}

@media print{
  .mainnav,.top-strip,.float-col,.foot{display:none;}
}