/* ============================================================
   peixun-youhui · 培训优惠 · 原型：促销活动版面（大色块）
   纯白+浅蓝+浅紫 · 荷叶舒展
   ============================================================ */

/* ---------- 首屏 ---------- */
.yh-hero{position:relative;min-height:520px;display:flex;align-items:center;padding:130px 0 90px;overflow:hidden}
.yh-hero-bg{position:absolute;inset:0;z-index:0}
.yh-hero-bg img{width:100%;height:100%;object-fit:cover}
.yh-hero-mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(115deg,rgba(124,111,208,.85) 0%,rgba(59,143,212,.55) 60%,rgba(29,43,58,.4) 100%)}
.yh-hero-inner{position:relative;z-index:2;max-width:820px;color:#fff}
.yh-kicker{display:inline-block;padding:6px 16px;border-radius:999px;background:rgba(255,255,255,.2);
  border:1px solid rgba(255,255,255,.4);font-size:.84rem;letter-spacing:2px;margin-bottom:20px;backdrop-filter:blur(6px)}
.yh-title{font-size:clamp(1.9rem,4vw,3rem);font-weight:800;line-height:1.25;margin-bottom:18px}
.yh-title em{font-style:normal;color:#ffe9a8}
.yh-sub{font-size:1.06rem;line-height:1.9;color:rgba(255,255,255,.93);max-width:680px;margin-bottom:30px}
.yh-actions{display:flex;flex-wrap:wrap;gap:14px}
.yh-hero .btn-ghost{border-color:#fff;color:#fff}
.yh-hero .btn-ghost:hover{background:rgba(255,255,255,.18)}
.yh-hero-wave{position:absolute;left:0;right:0;bottom:-1px;z-index:3;line-height:0}
.yh-hero-wave svg{width:100%;height:70px;display:block}

/* ---------- 大色块活动主视觉 ---------- */
.yh-blocks{background:
  radial-gradient(420px 320px at 8% 20%,rgba(99,176,232,.14),transparent 70%),
  radial-gradient(400px 320px at 95% 70%,rgba(164,143,232,.16),transparent 70%),
  var(--paper)}
.yh-blockgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.yh-big{position:relative;padding:40px 32px;color:#fff;overflow:hidden;
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);box-shadow:var(--shadow-2);
  transition:transform .35s}
.yh-big:nth-child(2){transform:translateY(18px)}
.yh-big:hover{transform:translateY(-8px)}
.yh-big:nth-child(2):hover{transform:translateY(10px)}
.yh-b1{background:linear-gradient(150deg,#3b8fd4,#63b0e8)}
.yh-b2{background:linear-gradient(150deg,#7c6fd0,#a48fe8)}
.yh-b3{background:linear-gradient(150deg,#4a90d9,#8f7fe0)}
.yh-big::after{content:"";position:absolute;right:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;
  background:rgba(255,255,255,.14)}
.yh-bigno{position:relative;display:inline-block;font-size:2.4rem;font-weight:800;letter-spacing:2px;
  margin-bottom:14px;opacity:.95}
.yh-big h3{position:relative;font-size:1.3rem;font-weight:800;margin-bottom:12px}
.yh-big p{position:relative;font-size:.95rem;line-height:1.9;color:rgba(255,255,255,.95);margin-bottom:18px}
.yh-bigtag{position:relative;display:inline-block;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.35);font-size:.82rem}

/* ---------- 优惠规则 ---------- */
.yh-rules{background:var(--mix-bg)}
.yh-rulelist{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:980px;margin:0 auto}
.yh-rule{display:flex;gap:14px;background:#fff;border:1px solid var(--line);padding:22px 24px;
  border-radius:var(--r-md) var(--r-sm) var(--r-md) var(--r-sm);box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s}
.yh-rule:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.yh-rule-dot{flex-shrink:0;width:12px;height:12px;border-radius:50%;margin-top:7px;
  background:linear-gradient(135deg,var(--blue),var(--purple))}
.yh-rule h3{font-size:1.05rem;font-weight:800;margin-bottom:6px}
.yh-rule p{color:var(--ink-2);font-size:.9rem;line-height:1.85}
.yh-notebar{display:flex;gap:12px;align-items:flex-start;max-width:980px;margin:24px auto 0;
  background:#fff;border:1px dashed var(--purple-2);border-radius:var(--r-md);padding:16px 20px}
.yh-notebar .ico{width:22px;height:22px;color:var(--purple);flex-shrink:0;margin-top:3px}
.yh-notebar p{color:var(--ink-2);font-size:.9rem;line-height:1.8}

/* ---------- 时间轴 ---------- */
.yh-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.yh-track::before{content:"";position:absolute;top:11px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--purple))}
.yh-node{position:relative;padding:34px 18px 0;text-align:center}
.yh-node-dot{position:relative;z-index:1;display:block;width:22px;height:22px;border-radius:50%;
  margin:0 auto 16px;background:#fff;border:6px solid var(--blue);box-shadow:0 0 0 4px var(--blue-bg)}
.yh-node:nth-child(even) .yh-node-dot{border-color:var(--purple);box-shadow:0 0 0 4px var(--purple-bg)}
.yh-node h3{font-size:1.05rem;font-weight:800;margin-bottom:6px}
.yh-node p{color:var(--ink-2);font-size:.88rem;line-height:1.8}

/* ---------- 参与方式 ---------- */
.yh-join-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.yh-join-text .section-title{text-align:left;font-size:clamp(1.4rem,2.6vw,1.9rem)}
.yh-join-text p{color:var(--ink-2);line-height:2;margin:14px 0}
.yh-join-actions{display:flex;gap:14px;margin-top:22px;flex-wrap:wrap}
.yh-join-img{border-radius:var(--r-sm) var(--r-lg) var(--r-sm) var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2)}
.yh-join-img img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .6s}
.yh-join-img:hover img{transform:scale(1.04)}

/* ---------- FAQ ---------- */
.yh-faq{background:var(--paper)}
.yh-faqgrid{max-width:860px;margin:0 auto;display:grid;gap:14px}
.yh-faqitem{background:#fff;border:1px solid var(--line);padding:18px 22px;
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);transition:box-shadow .3s,transform .3s}
.yh-faqitem:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.yh-faqitem summary{cursor:pointer;font-weight:700;font-size:1.02rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center}
.yh-faqitem summary::-webkit-details-marker{display:none}
.yh-faqitem summary::after{content:"+";font-size:1.4rem;color:var(--purple);font-weight:400;transition:transform .3s}
.yh-faqitem[open] summary::after{transform:rotate(45deg)}
.yh-faqitem p{margin-top:12px;color:var(--ink-2);line-height:1.9;font-size:.95rem}
.yh-faqitem p a{color:var(--blue);font-weight:600}

/* ---------- 互链 ---------- */
.yh-linkgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.yh-lcard{background:var(--purple-bg);border:1px solid transparent;padding:24px 22px;
  border-radius:var(--r-sm) var(--r-lg) var(--r-sm) var(--r-lg);transition:transform .3s,box-shadow .3s,background .3s}
.yh-lcard:nth-child(3n+2){transform:translateY(14px)}
.yh-lcard:nth-child(3n+2):hover{transform:translateY(8px)}
.yh-lcard:hover{transform:translateY(-6px);background:#fff;box-shadow:var(--shadow-2)}
.yh-lcard b{display:block;font-size:1.08rem;margin-bottom:6px;color:var(--ink)}
.yh-lcard span{color:var(--ink-3);font-size:.88rem}

/* ---------- 资讯 ---------- */
.yh-newsgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.yh-ncard{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.yh-ncard:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.yh-nthumb{overflow:hidden;aspect-ratio:3/2}
.yh-nthumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.yh-ncard:hover .yh-nthumb img{transform:scale(1.06)}
.yh-ncard h3{font-size:1rem;padding:16px 18px 4px;color:var(--ink);line-height:1.5}
.yh-ncard p{padding:0 18px 18px;color:var(--ink-3);font-size:.86rem}
.yh-newsmore{display:flex;justify-content:center;gap:12px;margin-top:34px;flex-wrap:wrap}

/* ---------- CTA ---------- */
.yh-cta{padding-top:20px}
.yh-cta-box{position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(135deg,#7c6fd0 0%,#3b8fd4 100%);color:#fff;
  border-radius:var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);padding:60px 30px;box-shadow:var(--shadow-2)}
.yh-cta-glow{position:absolute;border-radius:50%;filter:blur(40px);opacity:.55}
.yh-cta-glow.g1{width:280px;height:280px;background:#ffd27a;top:-90px;left:-60px}
.yh-cta-glow.g2{width:220px;height:220px;background:#63b0e8;bottom:-70px;right:-50px}
.yh-cta-box h2{position:relative;font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;margin-bottom:12px}
.yh-cta-box>p{position:relative;max-width:560px;margin:0 auto 26px;color:rgba(255,255,255,.94)}
.yh-cta-contact{position:relative;display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-bottom:28px}
.yh-cta-item{display:inline-flex;align-items:center;gap:12px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:12px 22px;color:#fff;backdrop-filter:blur(6px);
  transition:background .25s,transform .25s}
.yh-cta-item:hover{background:rgba(255,255,255,.26);transform:translateY(-2px)}
.yh-cta-item svg{width:20px;height:20px;flex-shrink:0}
.yh-cta-item span{display:flex;flex-direction:column;line-height:1.3;text-align:left}
.yh-cta-item small{font-size:.72rem;opacity:.85}
.yh-cta-item b{font-size:1.05rem;letter-spacing:.5px}

/* ---------- 优惠规则明细 ---------- */
.yh-ruledetail{background:var(--mix-bg)}
.yh-rdgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.yh-rdcard{background:#fff;border:1px solid var(--line);padding:28px 24px;
  border-radius:var(--r-lg) var(--r-md) var(--r-lg) var(--r-md);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.yh-rdcard.purple{background:linear-gradient(150deg,#f4eefc,#fff);border-color:#e3d5f7}
.yh-rdcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.yh-rdcard h3{font-size:1.12rem;font-weight:800;margin-bottom:10px;color:var(--blue)}
.yh-rdcard.purple h3{color:var(--purple)}
.yh-rdcard p{color:var(--ink-2);font-size:.92rem;line-height:1.9}
.yh-rdtag{display:inline-block;margin-top:14px;font-size:.8rem;color:var(--purple);
  background:var(--purple-bg);padding:5px 12px;border-radius:999px}
.yh-mergebar{display:flex;align-items:center;gap:14px;max-width:860px;margin:26px auto 0;
  background:var(--blue-bg);border-radius:var(--r-md);padding:16px 22px}
.yh-mergebar .ico{width:22px;height:22px;color:var(--blue);flex-shrink:0}
.yh-mergebar p{color:var(--ink-2);font-size:.92rem;line-height:1.85;margin:0}

/* ---------- 优惠适合谁 ---------- */
.yh-audience{background:var(--paper)}
.yh-ad-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.yh-ad-text .section-title{text-align:left;font-size:clamp(1.4rem,2.6vw,1.9rem)}
.yh-ad-text p{color:var(--ink-2);line-height:2;margin:13px 0}
.yh-ad-img{border-radius:var(--r-sm) var(--r-lg) var(--r-sm) var(--r-lg);overflow:hidden;box-shadow:var(--shadow)}
.yh-ad-img img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .6s}
.yh-ad-img:hover img{transform:scale(1.04)}

/* ---------- 怎么凑团 ---------- */
.yh-hjsteps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:hj}
.yh-hj{background:#fff;border:1px solid var(--line);padding:28px 24px;position:relative;
  border-radius:var(--r-md) var(--r-lg) var(--r-md) var(--r-lg);box-shadow:var(--shadow)}
.yh-hjno{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;font-weight:800;margin-bottom:14px}
.yh-hj h3{font-size:1.05rem;font-weight:800;margin-bottom:8px}
.yh-hj p{color:var(--ink-2);font-size:.9rem;line-height:1.85}

/* ---------- 报名前再唠两句 ---------- */
.yh-say{background:var(--paper)}
.yh-saybody{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-left:4px solid var(--blue);border-radius:var(--r-md);padding:30px 32px;box-shadow:var(--shadow)}
.yh-saybody p{color:var(--ink);line-height:2.1;margin-bottom:16px;font-size:.98rem}
.yh-saybody p:last-child{margin-bottom:0}

/* ---------- 页脚图标 ---------- */
.footer-contact .ico{width:20px;height:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .yh-blockgrid{grid-template-columns:1fr 1fr}
  .yh-big:nth-child(2){transform:none}
  .yh-rulelist{grid-template-columns:1fr}
  .yh-track{grid-template-columns:1fr 1fr;gap:24px}
  .yh-track::before{display:none}
  .yh-join-layout,.yh-ad-layout{grid-template-columns:1fr;gap:30px}
  .yh-linkgrid,.yh-newsgrid,.yh-rdgrid{grid-template-columns:repeat(2,1fr)}
  .yh-hjsteps{grid-template-columns:1fr}
  .yh-lcard:nth-child(3n+2){transform:none}
}
@media (max-width:767px){
  .yh-hero{min-height:auto;padding:110px 0 70px}
  .yh-blockgrid,.yh-linkgrid,.yh-newsgrid,.yh-rdgrid{grid-template-columns:1fr}
  .yh-track{grid-template-columns:1fr}
  .yh-actions .btn{width:100%}
  .yh-mergebar{flex-direction:column;align-items:flex-start}
}