/* ============ 牛仁教育官网 VIS（与 51niuren.cn 同源）============ */
:root{
  --red:#D1144A; --red-l:#E55679; --red-d:#B30F3D; --red-dd:#8A0B2F;
  --ink:#14152B; --ink-2:#3D3E5C; --ink-3:#6B6C85; --ink-4:#9C9DB0;
  --bg:#F7F8FC; --bg-2:#F1F2F9; --bg-soft:#EEF0F6;
  --white:#fff;
  --line-light:rgba(20,21,46,.08);
  --line-dark:rgba(255,255,255,.09);
  --r-sm:12px; --r-lg:20px; --r-xl:28px; --r-full:999px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,sans-serif;
  --font-num:"DIN Alternate","Bebas Neue",var(--font);
  --fs-h2:clamp(28px,3.4vw,42px);
  --ease:cubic-bezier(.4,0,.2,1);
  --sh-1:0 10px 30px rgba(20,21,46,.06);
  --sh-2:0 18px 44px rgba(20,21,46,.10);
  --indigo:linear-gradient(165deg,#14152E 0%,#1E1B4B 100%);
  --muted:#9C9DB0;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
a{text-decoration:none}
a:focus-visible{outline:2px solid var(--red-l);outline-offset:3px;border-radius:6px}

/* NAV（唯一常驻） */
.nav{position:sticky;top:0;z-index:50;background:rgba(20,21,46,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-dark);transition:background .3s,box-shadow .3s}
.nav.scrolled{background:rgba(20,21,46,.96);box-shadow:0 12px 32px rgba(20,21,46,.35)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;letter-spacing:.01em}
.brand-logo{width:34px;height:34px;border-radius:9px;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;box-shadow:var(--sh-1)}
.nav-links{display:flex;gap:32px}
.nav-links a{color:rgba(255,255,255,.72);font-size:15px;transition:.25s}
.nav-links a:hover,.nav-links a.on{color:#fff}
.nav-cta{background:var(--red);color:#fff;padding:10px 22px;border-radius:var(--r-full);font-size:14px;font-weight:600;transition:.25s}
.nav-cta:hover{background:var(--red-l);transform:translateY(-1px)}
/* 汉堡菜单按钮（仅移动端显示） */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:0;margin:0;border:none;background:transparent;cursor:pointer;border-radius:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav-toggle span:nth-child(2){opacity:0}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* 移动端导航：汉堡按钮 + 下拉整列（避免横向滚动/挤爆） */
@media(max-width:860px){
  .nav-in{height:auto;flex-wrap:nowrap;justify-content:flex-start;padding:9px 0}
  .logo{font-size:16px;white-space:nowrap}
  .logo .brand-logo{width:30px;height:30px;font-size:14px}
  .nav-cta{margin-left:auto;padding:8px 15px;font-size:13px;white-space:nowrap}
  .nav-toggle{display:flex}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:rgba(20,21,46,.98);padding:6px 0 12px;border-top:1px solid var(--line-dark);box-shadow:0 14px 32px rgba(0,0,0,.4)}
  .nav.open .nav-links{display:flex}
  .nav-links a{padding:14px 20px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-links a.on{border-left:3px solid var(--red);padding-left:17px}
  .nav-links a:last-child{border-bottom:none}
}
@media(max-width:400px){
  .logo{font-size:15px}
  .nav-cta{padding:7px 12px;font-size:12px}
}

/* HERO（官网原样：深墨蓝 + 双红光晕 + 居中） */
.hero{position:relative;background:var(--indigo);color:#fff;padding:clamp(92px,11vw,140px) 0 clamp(72px,9vw,112px);overflow:hidden;text-align:center}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(229,86,121,.5),transparent);z-index:3}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(ellipse 75% 65% at 50% 35%,#000 30%,transparent 78%);pointer-events:none}
.hero-glow{position:absolute;border-radius:50%;filter:blur(110px);opacity:.55}
.g1{width:560px;height:560px;background:var(--red);top:-200px;left:-120px}
.g2{width:460px;height:460px;background:rgba(209,20,74,.35);bottom:-220px;right:-140px;opacity:.26}
.hero-in{position:relative;z-index:2;max-width:860px;margin:0 auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--red-l);padding:7px 18px;border-radius:var(--r-full);border:1px solid rgba(209,20,74,.35);background:rgba(209,20,74,.1);margin-bottom:28px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red-l);box-shadow:0 0 0 4px rgba(209,20,74,.16)}
.section-soft .eyebrow,.section:not(.section-dark) .eyebrow{color:var(--red-d);border-color:rgba(179,15,61,.38);background:rgba(179,15,61,.07)}
.section-soft .eyebrow::before,.section:not(.section-dark) .eyebrow::before{background:var(--red-d);box-shadow:0 0 0 4px rgba(179,15,61,.14)}
.hero h1{font-size:clamp(40px,6vw,66px);line-height:1.12;font-weight:800;letter-spacing:-.02em;margin-bottom:24px}
.hero h1 .hl{color:var(--red-l)}
@supports(-webkit-background-clip:text){.hero h1 .hl{background:linear-gradient(100deg,#fff 8%,var(--red-l) 92%);-webkit-background-clip:text;background-clip:text;color:transparent}}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:rgba(255,255,255,.74);max-width:560px;margin:0 auto 38px;line-height:1.75}
.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:var(--red);color:#fff;padding:14px 30px;border-radius:var(--r-full);font-size:15px;font-weight:600;transition:.25s;box-shadow:0 10px 30px rgba(209,20,74,.35);display:inline-flex;align-items:center;gap:6px;border:1px solid transparent}
.btn-primary:hover{background:var(--red-l);transform:translateY(-2px)}
.btn-outline{border:1px solid rgba(255,255,255,.32);color:#fff;padding:14px 30px;border-radius:var(--r-full);font-size:15px;font-weight:600;transition:.25s;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.05)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.btn-sm{padding:11px 24px;font-size:14px}
.hero-trust{display:flex;justify-content:center;align-items:center;margin-top:54px;flex-wrap:wrap}
.hero-trust .ti{display:flex;flex-direction:column;align-items:center;padding:0 34px}
.hero-trust .ti b{font-family:var(--font-num);font-size:26px;font-weight:700;color:#fff;line-height:1.1}
.hero-trust .ti span{font-size:13px;color:rgba(255,255,255,.62);margin-top:5px}
.hero-trust .td{width:1px;height:34px;background:rgba(255,255,255,.15)}
@media(max-width:640px){.hero-trust .td{display:none}.hero-trust .ti{padding:10px 18px}}

/* SECTION */
.section{padding:clamp(68px,8vw,104px) 0}
.section-soft{background:var(--bg)}
.section-dark{background:var(--indigo);color:#fff;position:relative;overflow:hidden}
.sec-head{max-width:780px;margin:0 auto clamp(38px,4.6vw,58px);text-align:center}
.eyebrow.center{margin-left:auto;margin-right:auto}
.sec-title{font-size:var(--fs-h2);font-weight:800;line-height:1.25;letter-spacing:-.01em;margin:14px 0 16px;color:var(--ink)}
.section-dark .sec-title{color:#fff}
.sec-sub{font-size:clamp(15px,1.4vw,18px);color:var(--ink-3);max-width:640px;margin:0 auto;line-height:1.7}
.section-dark .sec-sub{color:rgba(255,255,255,.64)}

/* 轻引导（非拦截，替代原向导+Path） */
.guide{background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-bottom:1px solid var(--line-light)}
.guide-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.gstep{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:20px 22px;transition:.28s var(--ease);box-shadow:0 1px 2px rgba(20,21,46,.04)}
.gstep:hover{transform:translateY(-4px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-1)}
.gstep b{font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--red);letter-spacing:.1em}
.gstep .gt{font-size:16px;font-weight:700;color:var(--ink)}
.gstep .gs{font-size:13px;color:var(--ink-3);line-height:1.5}
@media(max-width:760px){.guide-steps{grid-template-columns:repeat(2,1fr)}}

/* COURSE TIERS */
.tier{margin-top:56px;scroll-margin-top:96px}
.tier:first-of-type{margin-top:0}
.tier-label{display:flex;align-items:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.tier-badge{font-family:var(--font-num);font-size:12px;font-weight:700;color:#fff;background:var(--red);padding:6px 14px;border-radius:var(--r-full);letter-spacing:.06em}
.tier-name{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.tier-desc{font-size:15px;color:var(--ink-3);margin-left:auto;max-width:360px;text-align:right}
@media(max-width:760px){.tier-desc{width:100%;text-align:left;margin-left:0;margin-top:4px}}

/* 产品线 / 进阶路径 */
.flow{display:flex;align-items:center;gap:10px;margin-bottom:22px;flex-wrap:wrap;font-size:13.5px}
.flow-item{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-full);padding:7px 16px;box-shadow:0 1px 2px rgba(20,21,46,.04)}
.flow-item .fi-name{font-weight:700;color:var(--ink)}
.flow-item .fi-price{font-family:var(--font-num);color:var(--red);font-weight:700}
.flow-arrow{color:var(--red);font-weight:800;font-size:18px}
.flow-cap{color:var(--ink-3);margin-left:auto}
@media(max-width:760px){.flow{flex-direction:column;align-items:flex-start;gap:8px}.flow-cap{margin-left:0}}
.upgrade-link{display:inline-flex;align-items:center;gap:5px;margin-top:10px;font-size:13px;font-weight:700;color:var(--red);background:rgba(209,20,74,.06);border:1px solid rgba(209,20,74,.18);padding:7px 13px;border-radius:var(--r-full);align-self:flex-start;transition:.2s}
.upgrade-link:hover{background:rgba(209,20,74,.12);border-color:var(--red)}

/* CARDS */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cards.cols2{grid-template-columns:repeat(2,1fr)}
.cards.triple{grid-template-columns:repeat(3,1fr)}
.cards.single{grid-template-columns:minmax(0,720px);justify-content:center}
@media(max-width:980px){.cards{grid-template-columns:repeat(2,1fr)}.cards.cols2,.cards.triple{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.cards,.cards.cols2,.cards.triple{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:0;transition:.35s var(--ease);position:relative;overflow:hidden;box-shadow:0 1px 2px rgba(20,21,46,.04);display:flex;flex-direction:column}
.card::after{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(229,86,121,.55),transparent);opacity:0;transition:opacity .35s}
.card:hover{transform:translateY(-5px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-2)}
.card:hover::after{opacity:1}
.card:hover .c-img img{transform:scale(1.05)}
/* 调和后的图片：统一红×海军蓝罩 + 降饱和，退为背景，不再抢眼 */
.c-img{height:118px;background:#14152B;overflow:hidden;position:relative}
.c-img img{width:100%;height:100%;object-fit:cover;filter:saturate(.82) contrast(.96) brightness(.98);transition:transform .6s var(--ease)}
.c-img::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(158deg,rgba(20,21,46,.34) 0%,rgba(209,20,74,.18) 100%)}
.c-img .ctag{position:absolute;top:11px;left:11px;background:rgba(209,20,74,.92);color:#fff;font-size:12px;font-weight:700;letter-spacing:.08em;padding:5px 12px;border-radius:var(--r-full);backdrop-filter:blur(4px);z-index:2}
.c-img .rec-tag{position:absolute;top:11px;right:11px;background:#fff;color:var(--red-d);font-size:12px;font-weight:800;padding:5px 12px;border-radius:var(--r-full);box-shadow:var(--sh-1);display:none;z-index:2}
.card.recommended{border-color:var(--red);box-shadow:0 0 0 1px var(--red),var(--sh-2)}
.card.recommended .rec-tag{display:block}
.c-body{padding:20px 22px;flex:1;display:flex;flex-direction:column;gap:10px}
.card-top{display:flex;align-items:flex-start;gap:14px}
.card-icon{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,rgba(209,20,74,.16),rgba(209,20,74,.05));box-shadow:inset 0 0 0 1px rgba(209,20,74,.14);color:var(--red);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex-shrink:0;font-family:var(--font)}
.card h4{font-size:17px;font-weight:700;color:var(--ink);line-height:1.4}
.price{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--red);margin-top:2px}
.card p{font-size:14px;color:var(--ink-3);line-height:1.65}
.more-btn{margin-top:2px;align-self:flex-start;background:none;border:1px solid var(--line-light);color:var(--red);font-size:13px;font-weight:600;padding:7px 15px;border-radius:var(--r-full);cursor:pointer;transition:.2s;font-family:inherit}
.more-btn:hover{border-color:var(--red);background:rgba(209,20,74,.05)}
.card-detail{display:none;border-top:1px dashed var(--line-light);margin-top:6px;padding-top:14px}
.card.open .card-detail{display:block}
.card-detail .cd-h{font-size:13px;color:var(--red-d);font-weight:800;margin:12px 0 6px;letter-spacing:.5px}
.card-detail .cd-h:first-child{margin-top:0}
.card-detail p{font-size:13.5px;color:var(--ink-2);line-height:1.62}
.card-detail ul{list-style:none}
.card-detail ul li{font-size:13.5px;color:var(--ink);padding:4px 0 4px 17px;position:relative;line-height:1.55}
.card-detail ul li:before{content:"";position:absolute;left:3px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--red)}
.card .apply-btn{margin-top:14px;align-self:flex-start}

/* INSTRUCTOR */
.instructor{background:#fff;border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
.inst-grid{display:grid;grid-template-columns:360px 1fr;gap:48px;align-items:center}
.inst-photo{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:1/1;background:var(--bg-2)}
.inst-photo img{width:100%;height:100%;object-fit:cover;display:block}
.inst-photo::after{content:"";position:absolute;inset:0;border-radius:var(--r-xl);box-shadow:inset 0 0 0 1px rgba(20,21,46,.08)}
.inst-content h3{font-size:var(--fs-h2);font-weight:800;color:var(--ink);margin-bottom:14px;line-height:1.25}
.inst-role{display:inline-flex;align-items:center;gap:8px;background:rgba(209,20,74,.08);color:var(--red-d);font-size:13px;font-weight:700;padding:6px 14px;border-radius:var(--r-full);margin-bottom:18px}
.inst-content p{font-size:15px;color:var(--ink-3);line-height:1.8;margin-bottom:14px}
.inst-stats{display:flex;gap:28px;margin-top:24px;flex-wrap:wrap}
.inst-stat b{display:block;font-family:var(--font-num);font-size:26px;color:var(--red);line-height:1}
.inst-stat span{font-size:13px;color:var(--ink-3)}
@media(max-width:920px){.inst-grid{grid-template-columns:1fr}.inst-photo{max-width:320px;margin:0 auto}}

/* CTA（联报）*/
.cta{position:relative;background:var(--indigo);color:#fff;padding:clamp(68px,8vw,104px) 0;text-align:center;overflow:hidden}
.cta-bg{position:absolute;inset:0;opacity:.25;pointer-events:none}
.cta-bg img{width:100%;height:100%;object-fit:cover;filter:grayscale(30%)}
.cta-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,21,46,.82) 0%,rgba(20,21,46,.92) 100%)}
.cta-glow{position:absolute;width:520px;height:520px;border-radius:50%;background:var(--red);filter:blur(120px);opacity:.32;top:-160px;left:50%;transform:translateX(-50%)}
.cta-in{position:relative;z-index:2;max-width:760px;margin:0 auto}
.cta h2{font-size:var(--fs-h2);font-weight:800;margin-bottom:16px;line-height:1.25;color:#fff}
.cta p{font-size:17px;color:rgba(255,255,255,.74);margin-bottom:30px;max-width:620px;margin-left:auto;margin-right:auto;line-height:1.7}
.cta .big{font-family:var(--font-num);font-size:clamp(46px,7vw,68px);font-weight:700;color:#fff;line-height:1}
.save-badge{display:inline-block;background:#fff;color:var(--red-d);font-size:13px;font-weight:800;padding:6px 16px;border-radius:var(--r-full);margin-bottom:12px}

/* APPLY FORM */
.apply{background:var(--bg)}
.apply-form{max-width:560px;margin:0 auto;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:34px 32px;box-shadow:var(--sh-1)}
.apply-form .fld{margin-bottom:18px}
.apply-form label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.apply-form .req{color:var(--red)}
.apply-form .opt{color:var(--ink-3);font-weight:400}
.apply-form input,.apply-form select{width:100%;padding:12px 14px;border:1px solid var(--line-light);border-radius:10px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink)}
.apply-form input:focus,.apply-form select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(209,20,74,.14)}
.submit-btn{width:100%;background:var(--red);color:#fff;border:none;padding:14px;border-radius:10px;font-size:16px;font-weight:800;cursor:pointer;margin-top:6px;transition:.2s}
.submit-btn:hover{background:var(--red-l)}
.form-ok{margin-top:16px;text-align:center;color:#1a8a3c;font-weight:700;font-size:15px}

/* 报名表单：蜜罐字段 / 隐私告知 / 错误提示 */
.apply-form .hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;
opacity:0;pointer-events:none}
.apply-form .form-note{font-size:12.5px;color:var(--ink-3);margin:12px 0 0;line-height:1.65;
text-align:center}
.form-err{margin-top:12px;text-align:center;color:var(--red-d);font-weight:700;font-size:14px}


/* FOOTER */
.footer{background:#14152E;color:rgba(255,255,255,.55);padding:52px 0 30px;font-size:14px;border-top:1px solid var(--line-dark)}
.footer-top{display:grid;grid-template-columns:1.4fr .85fr .85fr 1fr;gap:44px;align-items:start}
.footer .brand{display:flex;align-items:center;gap:12px}
.footer .brand-logo{width:38px;height:38px;border-radius:9px;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.footer .logo{font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer .contact{display:flex;flex-direction:column;gap:14px}
.footer .c-item{display:flex;align-items:baseline;gap:14px}
.footer .c-label{font-size:11px;letter-spacing:.18em;color:var(--red-l);font-weight:700;flex-shrink:0}
.footer .c-val{font-size:14px;color:rgba(255,255,255,.78);letter-spacing:.02em}
.footer .c-val a{color:rgba(255,255,255,.78);text-decoration:none;border-bottom:1px solid rgba(229,86,121,.35);transition:.25s}
.footer .c-val a:hover{color:#fff;border-bottom-color:var(--red-l)}
.trust-band{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;max-width:1080px;margin:34px auto 0}
.t-pill{display:flex;flex-direction:column;align-items:center;gap:3px;background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:16px 26px;text-align:center;transition:.3s var(--ease)}
.t-pill:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.25)}
.t-pill b{font-size:15px;color:#fff}
.t-pill small{font-size:12.5px;color:rgba(255,255,255,.6)}
.footer-bottom{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.footer .note{font-size:12px;color:rgba(255,255,255,.42);letter-spacing:.02em;line-height:1.7}
.footer .fb-slogan{font-size:12px;color:rgba(255,255,255,.42);letter-spacing:.06em}
.footer-col .f-title{font-size:12px;letter-spacing:.16em;color:var(--red-l);font-weight:700;margin-bottom:18px;text-transform:uppercase}
.f-links{display:flex;flex-direction:column;gap:11px}
.f-links a{font-size:14px;color:rgba(255,255,255,.62);text-decoration:none;transition:.25s}
.f-links a:hover{color:#fff}
.brand-desc{margin-top:18px;font-size:14px;color:rgba(255,255,255,.52);line-height:1.7;max-width:270px}
.contact-col .contact{gap:12px}
.fb-links{display:flex;gap:22px}
.fb-links a{font-size:12px;color:rgba(255,255,255,.42);text-decoration:none;border-bottom:1px solid transparent;transition:.25s}
.fb-links a:hover{color:rgba(255,255,255,.72);border-bottom-color:rgba(229,86,121,.4)}

/* SCROLL REVEAL */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}
.js .cards .card:nth-child(2){transition-delay:.06s}
.js .cards .card:nth-child(3){transition-delay:.12s}
.js .cards .card:nth-child(4){transition-delay:.18s}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1!important;transform:none!important}}
@media(max-width:860px){
  .footer-top{grid-template-columns:1fr 1fr;gap:30px 36px}
  .footer .brand{grid-column:1/-1}
}
@media(max-width:640px){
  .hero-trust .ti{padding-right:18px;margin-right:18px}
  .hero-trust .ti:last-child{padding-right:0;margin-right:0}
  .btn-row{justify-content:center}
  .hero-in{text-align:center;max-width:100%}
  .hero h1 br{display:none}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer .brand{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}


  /* tier 业务类型小标 */
  .biz-type{display:inline-block;margin-left:10px;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:700;vertical-align:middle}
  .biz-type.training{background:rgba(37,99,235,.12);color:#2563EB}
  .biz-type.consult{background:rgba(209,20,74,.12);color:var(--red)}
  .biz-type.escort2{background:rgba(14,124,102,.14);color:#0E7C66}
  /* 教研与师资 band */
  .faculty-band{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:10px}
  .fb-item{background:#fff;border:1px solid var(--line-light);border-radius:16px;padding:22px}
  .fb-item b{display:block;font-size:16px;font-weight:800;color:#14152B;margin-bottom:10px}
  .fb-item p{font-size:14px;line-height:1.7;color:#54595F;margin:0}

  /* 业务线导航（轻量，替代大块三大业务板块） */
  .biz-nav{display:flex;flex-wrap:wrap;gap:12px;margin:0 auto 52px;max-width:820px}
  .bn-item{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--r-full);font-size:14px;font-weight:700;background:#fff;border:1px solid var(--line-light);color:var(--ink-2);transition:.25s}
  .bn-item:hover{transform:translateY(-2px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-1)}
  .bn-item.current{background:var(--red);color:#fff;border-color:transparent}
  .bn-item:not(.current){color:var(--red-d)}

  /* 跨业务引导条 */
  .cross-banner{background:var(--indigo);color:#fff;padding:clamp(40px,5vw,64px) 0}
  .cross-in{max-width:880px;margin:0 auto;text-align:center}
  .cross-in h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-bottom:12px}
  .cross-in p{color:rgba(255,255,255,.7);margin-bottom:26px;font-size:16px}
  .cross-links{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
  .cross-card{flex:1;min-width:240px;max-width:330px;background:rgba(255,255,255,.05);border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:22px;text-align:left;transition:.3s var(--ease)}
  .cross-card:hover{transform:translateY(-3px);border-color:var(--red-l)}
  .cross-card b{display:block;font-size:17px;color:#fff;margin-bottom:6px}
  .cross-card span{font-size:14px;color:rgba(255,255,255,.66);line-height:1.6}
  .cross-card .cl-go{display:inline-block;margin-top:14px;color:var(--red-l);font-weight:700;font-size:14px}

  /* 业务页：交付步骤 / SLA 时间线（4 步） */
  .proc{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:14px}
  .proc-step{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:22px 20px;position:relative;transition:.3s}
  .proc-step:hover{transform:translateY(-4px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-1)}
  .proc-no{font-family:var(--font-num);font-size:13px;font-weight:700;color:#fff;background:var(--red);width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
  .proc-step h4{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:8px}
  .proc-step p{font-size:14px;color:var(--ink-3);line-height:1.65}
  @media(max-width:860px){.proc{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:520px){.proc{grid-template-columns:1fr}}

  /* 业务页定义区三栏对比 */
  .vs3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:14px}
  .vs-card{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:24px}
  .vs-card.active{border-color:var(--red);box-shadow:0 0 0 1px var(--red),var(--sh-1)}
  .vs-card .vt{display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;margin-bottom:12px;color:#fff}
  .vs-card h4{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:8px}
  .vs-card p{font-size:14px;color:var(--ink-3);line-height:1.7}
  @media(max-width:760px){.vs3{grid-template-columns:1fr}}

/* ============ 官网组件库补全（对齐 www.51niuren.cn）============ */

/* 漏斗步骤条 */
.funnel-steps{display:flex;align-items:center;justify-content:center;max-width:880px;margin:0 auto 52px}
.fs-item{display:flex;align-items:baseline;gap:9px;white-space:nowrap}
.fs-num{font-family:var(--font-num);font-size:12px;font-weight:700;color:var(--red);letter-spacing:.1em}
.fs-txt{font-size:14px;font-weight:600;color:var(--ink-2)}
.fs-line{flex:1;height:1px;background:linear-gradient(90deg,rgba(209,20,74,.35),rgba(20,21,46,.12));margin:0 18px;min-width:24px}
@media(max-width:760px){.funnel-steps{flex-wrap:wrap;gap:10px 0;max-width:420px}.fs-line{display:none}.fs-item{width:50%}}

/* 横条卡（380px 左图右文，官网最具辨识度组件） */
.card-row{position:relative;overflow:hidden;display:grid;grid-template-columns:380px 1fr;gap:0;align-items:stretch;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:0;transition:.35s var(--ease);box-shadow:0 1px 2px rgba(20,21,46,.04)}
.cr-img{background-size:cover;background-position:center;min-height:280px;transition:transform .6s var(--ease)}
.cr-main{padding:32px 36px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.cr-head{display:flex;align-items:center;gap:15px;min-width:0}
.cr-head h4{font-size:18px;font-weight:700;color:var(--ink);line-height:1.4}
.cr-body p{font-size:14px;color:var(--ink-3);line-height:1.65;margin-bottom:14px}
.cr-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.cr-meta .take{margin-bottom:0}
.card-row::after{content:"";position:absolute;top:0;left:26px;right:26px;height:1px;background:linear-gradient(90deg,transparent,rgba(229,86,121,.55),transparent);opacity:0;transition:opacity .35s}
.card-row:hover::after{opacity:1}
.card-row:hover{transform:translateY(-4px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-2)}
.card-row:hover .cr-img{transform:scale(1.06)}
.row-hl{background:linear-gradient(135deg,#fff 55%,rgba(209,20,74,.05));border-color:rgba(209,20,74,.35)}
.row-hl:hover{border-color:rgba(209,20,74,.55)}
.card-kicker{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--red);background:rgba(209,20,74,.08);border-radius:var(--r-full);padding:4px 12px;margin-bottom:14px}
.take{font-size:13px;color:var(--ink-2);background:var(--bg-soft);border-radius:10px;padding:11px 14px;line-height:1.55;display:inline-block}
.take b{color:var(--red)}
.fit{font-size:12.5px;font-weight:600;color:var(--red);letter-spacing:.02em}
@media(max-width:860px){.card-row{grid-template-columns:1fr}.cr-img{min-height:220px}.cr-meta{flex-direction:column;align-items:flex-start;gap:10px}}

/* 三栏证据卡 */
.evidence{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:left}
.ev{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:30px 28px;box-shadow:0 1px 2px rgba(20,21,46,.05);transition:.35s var(--ease)}
.ev:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(20,21,46,.08);border-color:rgba(209,20,74,.28)}
.ev .head{display:flex;align-items:center;justify-content:space-between}
.ev .n{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--red);letter-spacing:.12em}
.ev .k{font-size:18px;font-weight:700;color:var(--ink);margin-top:10px;line-height:1.4}
.ev .l{font-size:14px;color:var(--ink-2);margin-top:10px;line-height:1.65}
.ill{display:block;width:44px;height:44px}
@media(max-width:860px){.evidence{grid-template-columns:1fr}}

/* 大编号步卡 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-item{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:32px;transition:.35s var(--ease);position:relative;overflow:hidden}
.step-item::after{content:"";position:absolute;top:0;left:26px;right:26px;height:1px;background:linear-gradient(90deg,transparent,rgba(229,86,121,.55),transparent);opacity:0;transition:opacity .35s}
.step-item:hover::after{opacity:1}
.step-item:hover{transform:translateY(-5px);border-color:rgba(209,20,74,.4);box-shadow:var(--sh-2)}
.step-item .sn{font-family:var(--font-num);font-size:40px;font-weight:700;color:var(--red);opacity:.85;margin-bottom:14px}
.step-item h4{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--ink)}
.step-item p{font-size:14px;color:var(--ink-3);line-height:1.65;margin-bottom:16px}
.step-item .sl{font-size:13px;font-weight:600;color:var(--red)}
.step-item .ill{position:absolute;top:26px;right:26px;width:40px;height:40px}
@media(max-width:860px){.steps{grid-template-columns:1fr}}

/* 数据带 */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);box-shadow:0 1px 2px rgba(20,21,46,.05);margin-top:56px;overflow:hidden}
.stat-band .stat{padding:30px 18px;text-align:center;position:relative}
.stat-band .stat+.stat::before{content:"";position:absolute;left:0;top:24%;height:52%;width:1px;background:var(--line-light)}
.stat-band .stat .v{font-size:clamp(28px,3vw,40px)}
.stat .v{font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--red)}
.stat .l{font-size:13px;color:var(--ink-3);margin-top:2px}
.stat-row{display:flex;gap:36px;margin-top:28px;flex-wrap:wrap}
@media(max-width:860px){.stat-band{grid-template-columns:1fr 1fr;margin-top:40px}.stat-band .stat+.stat::before{display:none}.stat-band .stat:nth-child(2n){border-left:1px solid var(--line-light)}.stat-band .stat:nth-child(n+3){border-top:1px solid var(--line-light)}}

/* 信任胶囊墙 */
.trust-band{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;max-width:1080px;margin:0 auto}
.t-pill{display:flex;flex-direction:column;align-items:center;gap:3px;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);padding:18px 30px;text-align:center;box-shadow:0 1px 2px rgba(20,21,46,.05);transition:.3s var(--ease)}
.t-pill:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(20,21,46,.08)}
.t-pill b{font-size:15.5px;color:var(--ink)}
.t-pill small{font-size:12.5px;color:var(--ink-3)}
.band-note{text-align:center;font-size:13px;color:var(--ink-4);margin:30px 0 18px;letter-spacing:.02em}
@media(max-width:640px){.t-pill{width:100%;max-width:340px}}

/* 影带（官网原样：浅灰蓝底 + 双行反向） */
.gallery{padding:clamp(64px,8vw,100px) 0;background:var(--bg-2);overflow:hidden}
.tg-row{margin-top:22px;overflow-x:auto;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.tg-row::-webkit-scrollbar{display:none}
.tg-row:first-of-type{margin-top:44px}
.tg-track{display:flex;gap:18px;width:max-content;padding:4px 0 8px}
.js .tg-row .tg-track{animation:tg-scroll 64s linear infinite}
.tg-row:hover .tg-track{animation-play-state:paused}
.tg-row-rev .tg-track{animation-direction:reverse}
@keyframes tg-scroll{to{transform:translateX(-50%)}}
.tg-card{position:relative;width:360px;flex-shrink:0;border-radius:var(--r-lg);overflow:hidden;background:var(--ink);box-shadow:var(--sh-1);transition:.35s var(--ease)}
.tg-card:hover{transform:translateY(-6px) scale(1.02);box-shadow:var(--sh-2)}
.tg-card img{width:100%;height:225px;object-fit:cover;display:block;transition:.5s var(--ease)}
.tg-card:hover img{transform:scale(1.05)}
.tg-cap{position:absolute;inset:auto 0 0 0;padding:46px 18px 14px;background:linear-gradient(transparent,rgba(10,10,20,.82));color:#fff;display:flex;align-items:baseline;gap:10px}
.tg-cap span{font-size:13px;color:rgba(255,255,255,.88);line-height:1.4}
@media(max-width:640px){.tg-card{width:270px}.tg-card img{height:172px}}
@media(prefers-reduced-motion:reduce){.js .tg-row .tg-track{animation:none}.tg-row{scroll-behavior:smooth}}

/* 紧凑区块头 / 联报注 / 数字增长 */
.sec-head-compact{margin-bottom:24px}
.sec-title-sm{font-size:clamp(22px,2.6vw,30px);margin:12px 0 10px}
.sec-sub-sm{font-size:14px}
.bundle-note{font-size:12px;color:var(--ink-2);text-align:center;padding:8px 0 0;letter-spacing:.02em}

/* A11Y 跳转链接 */
.skip-link{position:absolute;left:-999px;top:8px;z-index:200;background:var(--red);color:#fff;padding:10px 18px;border-radius:var(--r-full);font-size:14px;font-weight:600}
.skip-link:focus{left:16px;outline:2px solid #fff;outline-offset:2px}

/* 页脚内的胶囊墙（深底作用域，与正文浅底版区分） */
.footer .trust-band{margin:34px auto 0}
.footer .t-pill{background:rgba(255,255,255,.04);border-color:var(--line-dark);box-shadow:none}
.footer .t-pill:hover{box-shadow:0 8px 20px rgba(0,0,0,.25)}
.footer .t-pill b{color:#fff}
.footer .t-pill small{color:rgba(255,255,255,.6)}

/* 师资阵容墙（圆形头像，取自牛仁电商学院师资库） */
.fac-wall{display:grid;grid-template-columns:repeat(8,1fr);gap:24px 14px;max-width:1080px;margin:0 auto}
.fac-card{text-align:center}
.fac-card img{width:100%;aspect-ratio:1/1;border-radius:50%;display:block;background:var(--bg-2);box-shadow:var(--sh-1);border:2px solid #fff;transition:.35s var(--ease)}
.fac-card:hover img{transform:translateY(-4px);border-color:rgba(209,20,74,.35);box-shadow:var(--sh-2)}
.fac-card b{display:block;margin-top:10px;font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.fac-note{text-align:center;font-size:13px;color:var(--ink-4);margin:32px auto 0;max-width:780px;line-height:1.85;letter-spacing:.02em}
@media(max-width:1080px){.fac-wall{grid-template-columns:repeat(6,1fr)}}
@media(max-width:760px){.fac-wall{grid-template-columns:repeat(4,1fr);gap:18px 10px}.fac-card b{font-size:12.5px}}
@media(max-width:420px){.fac-wall{grid-template-columns:repeat(3,1fr)}}