:root{
  --bg:#0a0e1a;
  --bg-2:#0f1626;
  --panel:rgba(255,255,255,.04);
  --panel-strong:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.10);
  --text:#e8edf7;
  --muted:#9aa6bf;
  --accent:#36e0c8;
  --accent-2:#7c5cff;
  --accent-3:#ff5c8a;
  --radius:16px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,14,26,.72);border-bottom:1px solid var(--border)}
.nav__inner{max-width:1180px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700}
.brand__logo{font-size:22px;filter:drop-shadow(0 0 10px var(--accent))}
.brand__name{font-size:19px;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand__tag{font-size:11px;color:var(--muted);border:1px solid var(--border);padding:2px 8px;border-radius:999px}
.nav__links{margin-left:auto;display:flex;gap:22px;font-size:14.5px;color:var(--muted)}
.nav__links a{transition:color .2s}
.nav__links a:hover{color:var(--text)}
.cart-btn{position:relative;display:flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;background:var(--panel-strong);border:1px solid var(--border);color:var(--text);cursor:pointer;transition:.2s}
.cart-btn:hover{border-color:var(--accent);color:var(--accent)}
.cart-btn__count{position:absolute;top:-6px;right:-6px;min-width:20px;height:20px;padding:0 5px;
  background:var(--accent-3);color:#fff;font-size:12px;font-weight:700;border-radius:999px;display:flex;align-items:center;justify-content:center}

/* ---------- Hero ---------- */
.hero{position:relative;padding:90px 22px 70px;overflow:hidden}
.hero__bg{position:absolute;inset:0;
  background:
    radial-gradient(620px 380px at 78% 8%,rgba(124,92,255,.28),transparent 60%),
    radial-gradient(560px 360px at 12% 22%,rgba(54,224,200,.22),transparent 60%),
    linear-gradient(180deg,#0b1120,#0a0e1a)}
.hero__bg::after{content:"";position:absolute;inset:0;opacity:.5;
  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:42px 42px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 75%)}
.hero__content{position:relative;max-width:880px;margin:0 auto;text-align:center}
.hero__pill{display:inline-block;font-size:13px;color:var(--accent);
  border:1px solid rgba(54,224,200,.35);background:rgba(54,224,200,.08);padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero__title{font-size:clamp(28px,5vw,48px);line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero__title span{background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--accent-3));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{margin:20px auto 0;max-width:640px;color:var(--muted);font-size:16px}
.hero__actions{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.hero__stats{display:flex;gap:34px;justify-content:center;margin-top:46px;flex-wrap:wrap}
.hero__stats strong{display:block;font-size:30px;background:linear-gradient(90deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero__stats span{font-size:13px;color:var(--muted)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.2s}
.btn--primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#06121a;box-shadow:0 10px 30px rgba(54,224,200,.25)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(124,92,255,.35)}
.btn--ghost{background:var(--panel-strong);border-color:var(--border);color:var(--text)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn--block{width:100%}

/* ---------- 通用区块 ---------- */
.section-head{max-width:1180px;margin:0 auto;padding:0 22px;text-align:center}
.section-head h2{font-size:30px;font-weight:800}
.section-head p{color:var(--muted);margin-top:8px}

/* ---------- 目录 ---------- */
.catalog{padding:70px 0 50px}
.catalog__toolbar{max-width:1180px;margin:30px auto 0;padding:0 22px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:space-between}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{padding:9px 16px;border-radius:999px;background:var(--panel);border:1px solid var(--border);color:var(--muted);cursor:pointer;font-size:14px;transition:.2s}
.tab:hover{color:var(--text)}
.tab.is-active{color:#06121a;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-color:transparent;font-weight:600}
.search{flex:1;min-width:200px;max-width:300px;padding:10px 14px;border-radius:12px;background:var(--panel);border:1px solid var(--border);color:var(--text);font-size:14px}
.search:focus{outline:none;border-color:var(--accent)}

.grid{max-width:1180px;margin:28px auto 0;padding:0 22px;display:grid;gap:20px;
  grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}
.card{position:relative;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;display:flex;flex-direction:column;gap:12px;transition:.25s;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;
  background:linear-gradient(135deg,rgba(54,224,200,.5),rgba(124,92,255,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card__top{display:flex;align-items:center;justify-content:space-between}
.card__icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;
  background:var(--panel-strong);border:1px solid var(--border)}
.card__cat{font-size:12px;color:var(--muted);border:1px solid var(--border);padding:3px 10px;border-radius:999px}
.card__cat.ai{color:var(--accent-2);border-color:rgba(124,92,255,.4)}
.card__cat.c3{color:var(--accent);border-color:rgba(54,224,200,.4)}
.card__cat.virtual{color:var(--accent-3);border-color:rgba(255,92,138,.4)}
.card__cat.service{color:#ffb74d;border-color:rgba(255,183,77,.4)}
.card__cat.course{color:#5ca8ff;border-color:rgba(92,168,255,.4)}
.price--consult{font-size:18px;color:var(--muted)}
.card__cover{position:relative;height:118px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;overflow:hidden}
.card__cover-ico{font-size:46px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.35))}
.card__cover.ai{background:linear-gradient(135deg,rgba(124,92,255,.32),rgba(124,92,255,.07))}
.card__cover.c3{background:linear-gradient(135deg,rgba(54,224,200,.32),rgba(54,224,200,.07))}
.card__cover.virtual{background:linear-gradient(135deg,rgba(255,92,138,.32),rgba(255,92,138,.07))}
.card__cover.service{background:linear-gradient(135deg,rgba(255,183,77,.32),rgba(255,183,77,.07))}
.card__cover.course{background:linear-gradient(135deg,rgba(92,168,255,.32),rgba(92,168,255,.07))}
.card__badge{position:absolute;top:10px;right:10px;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#06121a;font-size:12px;font-weight:700;padding:3px 11px;border-radius:999px;box-shadow:0 4px 12px rgba(0,0,0,.3)}
.card__sales{font-size:12px;color:var(--muted)}
.card h3{font-size:18px;font-weight:700;line-height:1.35}
.card__desc{color:var(--muted);font-size:13.5px;flex:1}
.card__meta{font-size:12px;color:var(--muted);border-top:1px dashed var(--border);padding-top:10px}
.card__foot{display:flex;align-items:center;justify-content:space-between;margin-top:4px}
.price{font-size:22px;font-weight:800;color:var(--accent)}
.price small{font-size:13px;color:var(--muted);font-weight:500}
.card__btns{display:flex;gap:8px}
.mini{border:1px solid var(--border);background:var(--panel-strong);color:var(--text);padding:8px 12px;border-radius:10px;font-size:13px;cursor:pointer;transition:.2s}
.mini:hover{border-color:var(--accent);color:var(--accent)}
.mini--buy{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#06121a;border-color:transparent;font-weight:600}
.mini--buy:hover{transform:translateY(-1px)}
.empty{text-align:center;color:var(--muted);margin-top:30px}

/* ---------- 购买流程 ---------- */
.how{padding:60px 0;background:linear-gradient(180deg,transparent,rgba(124,92,255,.05))}
.steps{max-width:1180px;margin:34px auto 0;padding:0 22px;display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.step{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:relative}
.step__no{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#06121a;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}

/* ---------- 定制服务流程 ---------- */
.service-flow{padding:64px 0;background:linear-gradient(180deg,rgba(54,224,200,.05),transparent)}
.sf{max-width:1180px;margin:34px auto 0;padding:0 22px;display:grid;gap:26px;grid-template-columns:1.35fr 1fr;align-items:start}
.sf__cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));align-content:start}
.sf-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:.25s}
.sf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(255,183,77,.45)}
.sf-card__ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;background:var(--panel-strong);border:1px solid var(--border);margin-bottom:12px}
.sf-card h3{font-size:17px;margin-bottom:8px}
.sf-card p{color:var(--muted);font-size:13.5px}
.sf-card__list{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:7px}
.sf-card__list li{font-size:13px;color:var(--text);padding-left:18px;position:relative}
.sf-card__list li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.sf__flow{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.sf__flow-title{font-size:18px;margin-bottom:18px}
.sf__steps{list-style:none;display:flex;flex-direction:column;gap:15px}
.sf__steps li{display:flex;flex-direction:column;gap:3px;padding-left:18px;border-left:2px solid rgba(54,224,200,.4);position:relative}
.sf__steps li::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.sf__steps b{font-size:14.5px}
.sf__steps span{font-size:13px;color:var(--muted)}
.sf__note{margin-top:18px;font-size:12.5px;color:var(--accent-3);border-top:1px dashed var(--border);padding-top:12px;line-height:1.5}
@media(max-width:880px){.sf{grid-template-columns:1fr}}

/* ---------- 培训课程介绍 ---------- */
.course-intro{padding:64px 0;background:linear-gradient(180deg,transparent,rgba(92,168,255,.05))}
.ci{max-width:1180px;margin:34px auto 0;padding:0 22px;display:grid;gap:26px;grid-template-columns:1fr 1.35fr;align-items:start}
.ci__path{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.ci__title{font-size:18px;margin-bottom:18px}
.ci__steps{list-style:none;display:flex;flex-direction:column;gap:15px}
.ci__steps li{display:flex;flex-direction:column;gap:3px;padding-left:18px;border-left:2px solid rgba(92,168,255,.5);position:relative}
.ci__steps li::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:#5ca8ff;box-shadow:0 0 10px #5ca8ff}
.ci__steps b{font-size:14.5px}
.ci__steps span{font-size:13px;color:var(--muted)}
.ci__note{margin-top:18px;font-size:12.5px;color:var(--accent-3);border-top:1px dashed var(--border);padding-top:12px;line-height:1.5}
.ci__cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));align-content:start}
.ci-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:.25s}
.ci-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(92,168,255,.45)}
.ci-card__ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;background:var(--panel-strong);border:1px solid var(--border);margin-bottom:12px}
.ci-card h3{font-size:17px;margin-bottom:6px}
.ci-card__who{font-size:12.5px;color:#5ca8ff;margin-bottom:10px}
.ci-card ul{list-style:none;display:flex;flex-direction:column;gap:7px}
.ci-card li{font-size:13px;color:var(--text);padding-left:18px;position:relative}
.ci-card li::before{content:"✓";position:absolute;left:0;color:#5ca8ff;font-weight:700}
@media(max-width:880px){.ci{grid-template-columns:1fr}}

/* ---------- 关于 ---------- */
.about{padding:60px 22px}
.about__card{max-width:760px;margin:0 auto;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:34px}
.about__card h2{font-size:24px;margin-bottom:12px}
.about__card p{color:var(--muted)}
.about__list{list-style:none;margin:18px 0;display:flex;flex-direction:column;gap:10px}
.about__list li{background:var(--panel-strong);border:1px solid var(--border);border-radius:12px;padding:12px 16px;font-size:14.5px}
.about__contact{margin-top:10px;font-size:15px}
.about__contact b{color:var(--accent)}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--border);padding:24px 22px;text-align:center;color:var(--muted);font-size:13px}

/* ---------- 购物车抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden}
.drawer[aria-hidden="false"]{visibility:visible}
.drawer__mask{position:absolute;inset:0;background:rgba(0,0,0,.55);opacity:0;transition:.25s}
.drawer[aria-hidden="false"] .drawer__mask{opacity:1}
.drawer__panel{position:absolute;top:0;right:0;height:100%;width:min(420px,92vw);background:var(--bg-2);
  border-left:1px solid var(--border);box-shadow:var(--shadow);transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column}
.drawer[aria-hidden="false"] .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--border)}
.drawer__head h3{font-size:18px}
.icon-btn{background:var(--panel-strong);border:1px solid var(--border);color:var(--text);width:34px;height:34px;border-radius:10px;cursor:pointer;font-size:15px}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
.drawer__body{flex:1;overflow-y:auto;padding:16px 22px;display:flex;flex-direction:column;gap:12px}
.cart-item{display:flex;gap:12px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px}
.cart-item__icon{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;background:var(--panel-strong);flex-shrink:0}
.cart-item__main{flex:1;min-width:0}
.cart-item__name{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-item__price{font-size:13px;color:var(--accent);margin-top:2px}
.qty{display:flex;align-items:center;gap:8px;margin-top:8px}
.qty button{width:26px;height:26px;border-radius:8px;background:var(--panel-strong);border:1px solid var(--border);color:var(--text);cursor:pointer}
.qty span{font-size:14px;min-width:18px;text-align:center}
.cart-item__del{background:none;border:none;color:var(--muted);cursor:pointer;font-size:13px;align-self:flex-start}
.cart-item__del:hover{color:var(--accent-3)}
.cart-empty{color:var(--muted);text-align:center;margin-top:40px;font-size:14px}
.drawer__foot{padding:18px 22px;border-top:1px solid var(--border)}
.drawer__total{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:15px}
.drawer__total strong{font-size:22px;color:var(--accent)}

/* ---------- 结算弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:90;visibility:hidden}
.modal[aria-hidden="false"]{visibility:visible}
.modal__mask{position:absolute;inset:0;background:rgba(0,0,0,.6);opacity:0;transition:.25s}
.modal[aria-hidden="false"] .modal__mask{opacity:1}
.modal__card{position:absolute;top:50%;left:50%;transform:translate(-50%,-46%) scale(.96);opacity:0;transition:.25s;
  width:min(680px,94vw);max-height:92vh;overflow-y:auto;background:var(--bg-2);border:1px solid var(--border);
  border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.modal[aria-hidden="false"] .modal__card{transform:translate(-50%,-50%) scale(1);opacity:1}
.modal__close{position:absolute;top:16px;right:16px}
.modal__title{font-size:22px;margin-bottom:22px}
.pay{display:flex;gap:26px;flex-wrap:wrap}
.pay__qr{display:flex;flex-direction:column;align-items:center;gap:10px;flex-shrink:0}
.pay__qr img{width:200px;height:200px;border-radius:14px;background:#fff;padding:10px;border:1px solid var(--border)}
.pay__qr-tag{font-size:13px;color:var(--muted)}
.pay__info{flex:1;min-width:240px}
.pay__amount{display:flex;align-items:baseline;justify-content:space-between;background:var(--panel);border:1px solid var(--border);
  border-radius:12px;padding:14px 16px;margin-bottom:16px}
.pay__amount span{color:var(--muted);font-size:14px}
.pay__amount strong{font-size:28px;color:var(--accent)}
.pay__steps{margin:0;padding-left:20px;color:var(--muted);font-size:14px;display:flex;flex-direction:column;gap:8px}
.pay__steps b{color:var(--text)}
.pay__order{margin-top:16px;background:var(--panel);border:1px dashed var(--border);border-radius:12px;padding:12px 14px;font-size:13px;color:var(--muted)}
.pay__order div{display:flex;justify-content:space-between;padding:3px 0}
.pay__order b{color:var(--text)}
.pay__note{margin-top:14px;font-size:12.5px;color:var(--accent-3);line-height:1.5}

/* ---------- 资源领取 ---------- */
.resource__item{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-bottom:12px}
.resource__name{font-weight:600;margin-bottom:10px}
.resource__links{display:flex;gap:10px;flex-wrap:wrap}
.resource__link{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:10px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#06121a;font-weight:600;font-size:14px;transition:.2s}
.resource__link:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(54,224,200,.3)}
.resource__fallback{color:var(--muted);font-size:13.5px}

/* ---------- 悬浮客服 ---------- */
.contact{position:fixed;right:22px;bottom:22px;z-index:70;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.contact__fab{width:54px;height:54px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#06121a;cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(54,224,200,.4);transition:.25s}
.contact__fab:hover{transform:translateY(-3px) scale(1.05)}
.contact__panel{width:248px;background:var(--bg-2);border:1px solid var(--border);border-radius:16px;
  padding:14px;box-shadow:var(--shadow);opacity:0;transform:translateY(10px) scale(.96);pointer-events:none;transition:.25s}
.contact__panel.is-open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.contact__head{font-weight:700;font-size:15px;margin-bottom:12px}
.contact__row{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:12px;background:var(--panel);
  border:1px solid var(--border);margin-bottom:9px;cursor:pointer;transition:.2s;text-decoration:none;color:var(--text)}
.contact__row:hover{border-color:var(--accent);background:var(--panel-strong)}
.contact__ico{font-size:20px;width:34px;height:34px;border-radius:9px;background:var(--panel-strong);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact__txt{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.contact__txt b{font-size:14px}
.contact__txt small{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.contact__tip{font-size:11.5px;color:var(--muted);text-align:center;margin-top:4px}

/* ---------- 联系我们 ---------- */
.contact-us{padding:60px 22px;background:linear-gradient(180deg,rgba(124,92,255,.04),transparent)}
.cu{max-width:640px;margin:28px auto 0;display:flex;flex-direction:column;gap:14px}
.cu__row{display:flex;align-items:center;gap:14px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--text);transition:.2s}
.cu__row:hover{border-color:var(--accent);background:var(--panel-strong)}
.cu__ico{width:48px;height:48px;border-radius:12px;background:var(--panel-strong);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.cu__info{flex:1;min-width:0}
.cu__info b{font-size:16px}
.cu__info small{display:block;font-size:14px;color:var(--muted);margin-top:2px;word-break:break-all}
.cu__tip{font-size:12.5px;color:var(--muted);text-align:center;margin-top:6px}

/* ---------- 会员 / 订单 ---------- */
.user-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:12px;font-size:14px;font-weight:600;
  background:linear-gradient(90deg,rgba(54,224,200,.15),rgba(124,92,255,.15));border:1px solid rgba(54,224,200,.4);color:var(--accent);cursor:pointer;transition:.2s;white-space:nowrap}
.user-btn:hover{border-color:var(--accent);box-shadow:0 4px 16px rgba(54,224,200,.25)}
.modal__card--sm{width:min(420px,94vw)}
.auth__tip{font-size:13px;color:var(--muted);margin:-10px 0 16px;line-height:1.6}
.auth__form{display:flex;flex-direction:column;gap:12px}
.input{padding:12px 14px;border-radius:12px;background:var(--panel);border:1px solid var(--border);color:var(--text);font-size:14.5px;width:100%}
.input:focus{outline:none;border-color:var(--accent)}
.auth__err{color:var(--accent-3);font-size:13px;margin:-4px 0}
.pay__orderno{margin-top:14px;background:rgba(54,224,200,.07);border:1px dashed rgba(54,224,200,.45);border-radius:12px;padding:12px 14px;font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:8px}
.pay__orderno b{color:var(--accent)}
.pay__orderno-row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pay__orderno-row b{font-size:19px;letter-spacing:1px}
.order-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-bottom:12px}
.order-card__head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.order-no{font-size:14px;letter-spacing:.5px}
.order-status{font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid var(--border);color:var(--muted)}
.order-status.st-claimed{color:#ffb74d;border-color:rgba(255,183,77,.4)}
.order-status.st-shipped{color:var(--accent);border-color:rgba(54,224,200,.4)}
.order-card__items{font-size:13.5px;color:var(--muted);line-height:1.7}
.order-card__total{margin-top:8px;font-size:14px;color:var(--text)}
.order-card__total b{color:var(--accent)}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);z-index:120;
  background:rgba(20,28,46,.95);border:1px solid var(--border);color:var(--text);padding:12px 22px;border-radius:12px;
  font-size:14px;box-shadow:var(--shadow);opacity:0;transition:.3s;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ================= 移动端自适应 ================= */

/* 平板及以下（≤880px） */
@media(max-width:880px){
  .nav__inner{padding:12px 14px;gap:10px}
  .nav__links{display:none}
  .user-btn{padding:8px 12px;font-size:13px}
  .section-head h2{font-size:25px}
  .hero{padding:60px 18px 48px}
  .hero__sub{font-size:15px}
  .hero__stats{gap:22px;margin-top:34px}
  .hero__stats strong{font-size:25px}
  .catalog{padding:52px 0 40px}
  .catalog__toolbar{flex-direction:column;align-items:stretch;gap:12px}
  .search{max-width:none;width:100%}
  .tabs{justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;flex-wrap:nowrap}
  .tab{white-space:nowrap;flex-shrink:0}
  .grid{gap:14px;padding:0 14px}
  .card{padding:16px}
  .card__cover{height:96px;margin-bottom:10px}
  .card__cover-ico{font-size:38px}
  .card h3{font-size:16.5px}
  .price{font-size:20px}
  .steps{padding:0 14px}
  .about__card{padding:24px 18px}
  .modal__card{padding:22px 16px;border-radius:16px}
  .modal__title{font-size:19px;margin-bottom:16px}
  .contact{right:14px;bottom:14px}
}

/* 手机（≤680px） */
@media(max-width:680px){
  /* 消除点按高亮，输入 16px 防 iOS 聚焦缩放 */
  *{-webkit-tap-highlight-color:transparent}
  input,select,textarea,button{font-size:16px}
  .tab,.mini,.btn{font-size:14.5px}

  .brand__tag{display:none}
  .brand__name{font-size:17px}
  .cart-btn{width:38px;height:38px}
  .user-btn{padding:7px 10px;font-size:12.5px}

  .hero{padding:48px 16px 40px}
  .hero__pill{font-size:12px;padding:5px 12px;margin-bottom:16px}
  .hero__title{font-size:clamp(24px,7.2vw,32px)}
  .hero__sub{margin-top:14px;font-size:14.5px}
  .hero__actions{gap:10px;margin-top:22px}
  .hero__actions .btn{width:100%;max-width:300px}
  .hero__stats{gap:16px;margin-top:28px}
  .hero__stats strong{font-size:22px}
  .hero__stats span{font-size:12px}

  .section-head{padding:0 16px}
  .section-head h2{font-size:22px}
  .section-head p{font-size:14px}

  .grid{grid-template-columns:1fr 1fr;gap:10px;padding:0 12px}
  .card{padding:12px;border-radius:13px}
  .card__cover{height:70px;border-radius:9px;margin-bottom:8px}
  .card__cover-ico{font-size:30px}
  .card__top{flex-direction:column;align-items:flex-start;gap:6px}
  .card h3{font-size:14.5px}
  .card__desc{font-size:12.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .card__meta{font-size:11px;padding-top:8px}
  .card__foot{flex-direction:column;align-items:stretch;gap:8px}
  .price{font-size:18px}
  .card__btns{display:grid;grid-template-columns:1fr 1fr;gap:6px}
  .mini{padding:9px 6px;text-align:center;font-size:12.5px}

  .step{padding:18px}
  .sf-card,.ci-card,.ci__path,.sf__flow{padding:18px}

  /* 购物车抽屉全宽 */
  .drawer__panel{width:100vw;border-left:none}
  .drawer__body{padding:12px 14px}
  .drawer__foot{padding:14px}
  .cart-item{padding:10px}

  /* 结算弹窗：收款码置顶居中，信息纵向排 */
  .pay{flex-direction:column;gap:16px}
  .pay__qr{margin:0 auto}
  .pay__qr img{width:180px;height:180px}
  .pay__info{width:100%;min-width:0}
  .pay__amount strong{font-size:24px}
  .pay__orderno-row b{font-size:16px}

  /* 悬浮客服 */
  .contact__fab{width:48px;height:48px}
  .contact__panel{position:fixed;right:12px;left:12px;bottom:74px;width:auto}
  .toast{bottom:84px;width:max-content;max-width:92vw;font-size:13px;padding:10px 16px}

  .footer{padding:18px 14px;font-size:12px}
}

/* 小屏手机（≤400px）商品单列 */
@media(max-width:400px){
  .grid{grid-template-columns:1fr}
}