/* roulang page: index */
:root{
  --brand:#4B22A8;
  --brand-hover:#3A1A82;
  --brand-soft:#F0EBFB;
  --brand-soft-2:#E3DAF7;
  --accent:#00D6A4;
  --accent-soft:#EAFBF6;
  --coral:#FF5B3A;
  --coral-hover:#E84526;
  --bg:#F5F3FA;
  --surface:#FFFFFF;
  --text:#16101F;
  --muted:#6B6478;
  --line:#E4E0EF;
  --dark:#140F24;
  --dark-2:#1C1633;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 2px 8px rgba(26,18,48,.06);
  --sh-2:0 12px 32px rgba(26,18,48,.10);
  --ring:0 0 0 3px rgba(108,76,241,.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-hover);}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;color:var(--text);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-sm);}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.wrap{padding:0 24px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(26,18,48,.09);}
.header-inner{display:flex;align-items:center;gap:18px;height:70px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text);white-space:nowrap;}
.logo:hover{color:var(--brand);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:0;
}
.logo-sub{color:var(--muted);font-weight:500;margin-left:2px;}
@media (max-width:575.98px){.logo-sub{display:none;}.logo{font-size:16px;}}
.nav-links{display:none;align-items:center;gap:2px;margin-left:14px;}
@media (min-width:768px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;display:inline-block;padding:9px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.header-link{font-size:14px;font-weight:600;color:var(--brand);display:none;text-decoration:underline;text-underline-offset:3px;}
.header-link:hover{color:var(--brand-hover);}
@media (min-width:768px){.header-link{display:inline-block;}}

/* ---------- buttons ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-x:focus-visible{outline:none;box-shadow:var(--ring);}
.btn-primary-x{background:var(--brand);color:#fff;}
.btn-primary-x:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost-x{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost-x:hover{background:var(--brand-soft);color:var(--brand-hover);}
.btn-light-x{background:#fff;border-color:var(--line);color:var(--text);}
.btn-light-x:hover{border-color:var(--brand);color:var(--brand);}
.btn-coral-x{background:var(--coral);color:#fff;}
.btn-coral-x:hover{background:var(--coral-hover);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,91,58,.28);}
.btn-coral-x:active{transform:translateY(0);}
.btn-sm-x{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg-x{height:50px;padding:0 26px;font-size:16px;}
.btn-block-x{width:100%;}

/* ---------- hero ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;background:var(--dark);padding:52px 0 60px;}
@media (min-width:768px){.hero{padding:72px 0 84px;}}
@media (min-width:1200px){.hero{padding:84px 0 96px;}}
.hero-bg{position:absolute;inset:0;z-index:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.hero-veil{position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(20,15,36,.95) 0%,rgba(24,17,48,.88) 46%,rgba(75,34,168,.62) 100%);}
.hero .wrap{position:relative;z-index:2;}
.hero-inner{display:grid;gap:32px;align-items:center;}
@media (min-width:992px){.hero-inner{grid-template-columns:1.15fr .85fr;gap:56px;}}
.hero-copy{color:#fff;max-width:640px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:rgba(0,214,164,.14);border:1px solid rgba(0,214,164,.42);
  color:#7FF3D6;font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.22;font-weight:700;color:#fff;margin-bottom:18px;
}
.hero-sub{font-size:clamp(15px,1.2vw,17px);line-height:1.85;color:rgba(255,255,255,.82);margin-bottom:26px;}
.hero-points{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:10px;}
@media (min-width:576px){.hero-points{grid-template-columns:repeat(2,1fr);}}
.hero-points li{position:relative;padding-left:22px;font-size:14.5px;color:rgba(255,255,255,.76);line-height:1.7;}
.hero-points li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:linear-gradient(135deg,var(--accent),#7d5ce0);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* login card */
.login-card{
  background:#fff;border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-2);
  width:100%;max-width:420px;
}
@media (min-width:992px){.login-card{justify-self:end;padding:28px;}}
.login-card h2{font-size:19px;font-weight:700;margin-bottom:6px;}
.login-card .hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:6px;}
.field input{
  width:100%;height:48px;border-radius:var(--r-md);border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:15px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:#A9A3B5;}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.16);}
.field .help{font-size:13px;color:var(--muted);margin-top:6px;}
.login-links{display:flex;justify-content:space-between;gap:12px;font-size:13px;margin-top:14px;flex-wrap:wrap;}
.login-links a{color:var(--muted);}
.login-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.login-note{
  margin-top:16px;padding:10px 12px;border-radius:10px;background:var(--accent-soft);
  color:#0A6E56;font-size:13px;line-height:1.7;
}

/* ---------- stats strip ---------- */
.stats-strip{
  display:grid;gap:1px;grid-template-columns:repeat(2,1fr);
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);
}
@media (min-width:768px){.stats-strip{grid-template-columns:repeat(4,1fr);}}
.stat{background:#fff;padding:22px 20px;}
.stat b{display:block;font-size:24px;font-weight:700;color:var(--brand);line-height:1.25;font-variant-numeric:tabular-nums;}
.stat span{font-size:13px;color:var(--muted);}

/* ---------- section ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:88px 0;}}
@media (min-width:1200px){.section{padding:104px 0;}}
.section-tight{padding-top:0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.section-title{font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;}
.section-desc{color:var(--muted);font-size:15px;margin-top:10px;max-width:660px;}
.eyebrow-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.tag-x{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--accent-soft);color:#0A7A5E;}
.tag-brand{background:var(--brand-soft);color:var(--brand);}
.tag-light{background:rgba(255,255,255,.22);color:#fff;}

/* ---------- compare table ---------- */
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-head{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;background:var(--dark-2);}
.compare-head .ch{padding:18px 16px;color:#fff;font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;}
.compare-head .ch.is-rec{background:var(--brand);}
.compare-row{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;}
.compare-row.is-alt{background:#FAF9FE;}
.compare-row .cc{padding:16px;font-size:14.5px;color:var(--muted);border-top:1px solid var(--line);}
.compare-row .cc-item{color:var(--text);font-weight:600;}
.compare-row .cc.is-rec{background:var(--brand-soft);color:var(--brand);font-weight:600;}
@media (max-width:767.98px){
  .compare-head{display:none;}
  .compare-row{display:block;padding:4px 0;}
  .compare-row .cc{display:flex;justify-content:space-between;align-items:baseline;gap:16px;border-top:none;padding:9px 16px;}
  .compare-row .cc::before{content:attr(data-label);color:var(--muted);font-weight:500;font-size:13px;flex:0 0 auto;}
  .compare-row .cc-item{padding:14px 16px 4px;font-size:16px;border-top:1px solid var(--line);}
  .compare-row .cc-item::before{content:"";}
  .compare-row .cc.is-rec{background:var(--brand-soft);border-radius:0;}
}

/* ---------- tiers ---------- */
.tier-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){.tier-grid{grid-template-columns:repeat(3,1fr);gap:22px;align-items:center;}}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-soft-2);}
.tier-card.is-feature{border-color:var(--brand);box-shadow:var(--sh-2);padding:32px 24px;}
@media (min-width:992px){
  .tier-card.is-feature{transform:scale(1.02);}
  .tier-card.is-feature:hover{transform:scale(1.02) translateY(-2px);}
}
.tier-bar{height:6px;border-radius:999px;margin-bottom:18px;background:linear-gradient(135deg,var(--accent),var(--brand));}
.tier-bar.lv1{background:linear-gradient(135deg,#A98CEF,#4B22A8);}
.tier-bar.lv2{background:linear-gradient(135deg,#00D6A4,#4B22A8);}
.tier-bar.lv3{background:linear-gradient(135deg,#00D6A4,#2A1160);}
.tier-badge{
  position:absolute;top:-12px;right:20px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:12px;font-weight:600;display:inline-flex;align-items:center;
}
.tier-name{font-size:19px;font-weight:700;margin-bottom:6px;}
.tier-desc{font-size:13.5px;color:var(--muted);line-height:1.7;min-height:44px;}
.tier-list{list-style:none;padding:0;margin:18px 0 20px;display:grid;gap:10px;}
.tier-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--muted);line-height:1.7;}
.tier-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:var(--brand-soft-2);
}
.tier-list li.ok::before{background:linear-gradient(135deg,var(--accent),var(--brand));}
.tier-price{font-size:24px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:4px;}
.tier-price small{font-size:13px;color:var(--muted);font-weight:500;margin-left:4px;}
.tier-note{font-size:12.5px;color:var(--muted);margin-bottom:18px;}

/* ---------- content cards ---------- */
.content-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:576px){.content-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.content-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.c-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.c-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.c-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.c-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.c-card:hover .c-thumb img{transform:scale(1.03);}
.c-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.c-body h3{font-size:17px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.c-card:hover .c-body h3{color:var(--brand);}
.c-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.c-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px;}

/* ---------- news / cms ---------- */
.news-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:576px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);color:inherit;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-soft-2);color:inherit;}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:9px;flex:1;}
.news-body h3{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-body h3{color:var(--brand);}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:4px;}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:40px;height:40px;stroke:var(--brand-soft-2);fill:none;stroke-width:1.6;margin:0 auto 16px;display:block;}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ---------- faq ---------- */
.accordion.faq-boot{--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:#fff;--bs-accordion-active-color:var(--brand);--bs-accordion-btn-padding-x:20px;--bs-accordion-body-padding-x:20px;}
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item .accordion-button{
  position:relative;display:flex;align-items:center;gap:12px;
  background:#fff;color:var(--text);font-size:15.5px;font-weight:600;
  padding:18px 20px;line-height:1.5;border-radius:0;
}
.faq-item .accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.faq-item .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.faq-item .accordion-button::after{display:none;}
.faq-item .chev{
  margin-left:auto;flex:0 0 10px;width:10px;height:10px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .25s ease,border-color .25s ease;
}
.faq-item .accordion-button:not(.collapsed) .chev{transform:rotate(-135deg);border-color:var(--brand);}
.faq-item .accordion-body{padding:4px 20px 20px;font-size:15px;color:var(--muted);line-height:1.9;}

/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(135deg,#140F24 0%,#1C1633 52%,#3A1A82 100%);
  border-radius:var(--r-xl);padding:40px 24px;color:#fff;
  display:grid;gap:24px;align-items:center;
  border:1px solid rgba(255,255,255,.08);
}
@media (min-width:768px){.cta-band{padding:52px 44px;grid-template-columns:1.5fr auto;gap:40px;}}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;line-height:1.35;margin-bottom:12px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.74);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.52);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 0;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(3,1fr);gap:28px;}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:24px;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;margin-bottom:14px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,var(--accent),#7d5ce0);}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-col a:hover{color:#B79BFF;}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:44px;
  padding:20px 0 calc(20px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:grid;grid-template-columns:repeat(3,1fr);
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:768px){.tabbar{display:none;}}
.tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  height:58px;font-size:11.5px;color:var(--muted);font-weight:500;
}
.tabbar a svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tabbar a:hover{color:var(--brand);}
.tabbar a.active{color:var(--brand);font-weight:600;}
.tabbar a.active::before{
  content:"";position:absolute;top:0;width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);
}
@media (max-width:767.98px){
  body{padding-bottom:70px;}
}

/* roulang page: article */
:root{
  --purple:#4B22A8;
  --purple-deep:#3A1A82;
  --purple-bright:#A98BFF;
  --purple-soft:#F2EEFC;
  --cyan:#00D6A4;
  --cyan-soft:#EAFBF6;
  --coral:#FF5B3A;
  --coral-deep:#E8431F;
  --ink:#16101F;
  --muted:#6B6478;
  --line:#E4E0EF;
  --bg:#F5F3FA;
  --surface:#FFFFFF;
  --dark:#140F24;
  --dark-2:#1C1633;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 2px 8px rgba(26,18,48,.06);
  --sh-2:0 12px 32px rgba(26,18,48,.10);
  --focus-ring:0 0 0 3px rgba(108,76,241,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--purple);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--purple-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--r-sm)}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tnum{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:var(--dark);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(10,6,24,.35)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;font-size:17px;font-weight:700;white-space:nowrap;
}
.logo:hover{color:#fff}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--cyan),var(--purple) 90%);
  color:#fff;font-size:17px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-sub{font-size:12px;font-weight:500;color:rgba(255,255,255,.62);margin-left:6px;letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:12px}
.nav-links a{
  position:relative;color:rgba(255,255,255,.72);font-size:15px;padding:24px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  border-radius:2px;background:var(--purple-bright);transform:scaleX(0);transition:transform .2s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:#fff;font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.header-link{color:rgba(255,255,255,.8);font-size:15px}
.header-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm)}
.btn-purple-x{background:var(--purple);color:#fff}
.btn-purple-x:hover{background:var(--purple-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-purple-x:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost-x{background:transparent;color:var(--purple);border-color:var(--purple)}
.btn-ghost-x:hover{background:var(--purple-soft);color:var(--purple-deep)}
.btn-coral-x{background:var(--coral);color:#fff}
.btn-coral-x:hover{background:var(--coral-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,91,58,.28)}
.btn-line-x{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.btn-line-x:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-text-x{
  background:none;border:0;padding:0;color:var(--purple);font-weight:600;font-size:15px;
  text-decoration:underline;text-underline-offset:3px;cursor:pointer;
}
.btn-text-x:hover{color:var(--purple-deep)}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);padding:14px 0;
}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#C6BFD8}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--purple)}
.crumb .cur{color:var(--muted);max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.post-head{padding:44px 0 0}
.post-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;background:var(--purple-soft);
  color:var(--purple);font-size:13px;font-weight:600;
}
.post-head h1{
  font-size:clamp(28px,4vw,48px);
  line-height:1.2;
  margin:18px 0 18px;
  max-width:900px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  font-size:13px;color:var(--muted);padding-bottom:28px;
}
.post-meta span{display:inline-flex;align-items:center;gap:7px}
.post-meta i{color:var(--cyan)}
.post-cover{
  border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-1);
  background:#fff;border:1px solid var(--line);
}
.post-cover img{width:100%;aspect-ratio:16/8;object-fit:cover}
.post-cover figcaption{font-size:13px;color:var(--muted);padding:12px 18px;border-top:1px solid var(--line)}

/* ============ 布局 ============ */
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:40px 0 72px}
.main-col{min-width:0}
.side-col{display:flex;flex-direction:column;gap:24px}

/* ============ 正文排版 ============ */
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 40px;box-shadow:var(--sh-1);
}
.article-body{max-width:100%;font-size:16.5px;line-height:1.9;color:#241C31}
.article-body>*+*{margin-top:1.2em}
.article-body p{margin:1.2em 0 0}
.article-body h2{
  font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-top:40px;padding-left:14px;
  border-left:4px solid var(--purple);
}
.article-body h3{font-size:19px;margin-top:24px}
.article-body h4{font-size:17px;margin-top:20px;color:var(--purple-deep)}
.article-body a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--purple-deep)}
.article-body ul,.article-body ol{margin-top:1em;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-top:10px}
.article-body ul>li::before{
  content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--purple);
}
.article-body ol{counter-reset:olc}
.article-body ol>li{counter-increment:olc}
.article-body ol>li::before{
  content:counter(olc);position:absolute;left:0;top:4px;
  width:18px;height:18px;border-radius:50%;background:var(--purple-soft);color:var(--purple);
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--purple-soft);
  border-left:4px solid var(--purple);border-radius:0 var(--r-md) var(--r-md) 0;
  color:#33255A;font-size:16px;
}
.article-body img{border-radius:var(--r-md);margin:22px 0;border:1px solid var(--line)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:22px 0;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;font-size:15px;
}
.article-body th{background:var(--dark);color:#fff;font-weight:600;text-align:left;padding:12px 14px}
.article-body td{padding:12px 14px;border-top:1px solid var(--line)}
.article-body tbody tr:nth-child(even) td{background:#FAF9FE}
.article-body code{
  background:var(--purple-soft);color:var(--purple-deep);padding:2px 6px;
  border-radius:6px;font-size:.92em;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.notice-box{
  background:var(--cyan-soft);border-left:4px solid var(--cyan);border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 20px;margin:24px 0;font-size:15.5px;color:#0C4A3C;
}
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--line);border-radius:var(--r-lg);background:#FBFAFE;
}
.empty-state i{font-size:34px;color:var(--purple-bright)}
.empty-state h2{font-size:22px;margin:16px 0 8px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* ============ 文末导航 ============ */
.post-nav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px;
}
.post-nav a{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px 20px;display:block;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D7CFF2}
.post-nav .dir{font-size:13px;color:var(--muted);display:block;margin-bottom:6px}
.post-nav .t{color:var(--ink);font-weight:600;font-size:15.5px;display:block;line-height:1.5}
.post-nav a:hover .t{color:var(--purple)}
.back-home{margin-top:22px;display:flex;justify-content:center}

/* ============ 相关推荐 ============ */
.section{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,32px)}
.section-head p{color:var(--muted);font-size:14px;margin-top:8px}
.more-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D7CFF2}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#EEEAF8}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .pc-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge-x{
  align-self:flex-start;padding:4px 10px;border-radius:999px;
  background:var(--cyan-soft);color:#0A6B54;font-size:12px;font-weight:600;
}
.badge-purple-x{background:var(--purple-soft);color:var(--purple-deep)}
.post-card h3{font-size:17.5px;line-height:1.45}
.post-card h3 a{color:var(--ink)}
.post-card:hover h3 a{color:var(--purple)}
.post-card .excerpt{font-size:14px;color:var(--muted);line-height:1.7}
.pc-meta{margin-top:auto;display:flex;gap:14px;font-size:13px;color:var(--muted);padding-top:6px}

/* ============ 侧栏 ============ */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:15px;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.side-card h3 i{color:var(--cyan)}
.toc-list li+li{margin-top:6px}
.toc-list a{
  display:block;font-size:14px;color:var(--muted);padding:7px 10px;border-radius:var(--r-sm);
  border-left:2px solid transparent;line-height:1.5;
}
.toc-list a:hover{background:var(--purple-soft);color:var(--purple-deep);border-left-color:var(--purple)}
.hot-list li+li{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.hot-list a{font-size:14.5px;color:var(--ink);font-weight:500;line-height:1.55;display:block}
.hot-list a:hover{color:var(--purple)}
.hot-list span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.side-member{background:linear-gradient(135deg,var(--dark),var(--dark-2));border:1px solid rgba(255,255,255,.08);color:#fff}
.side-member h3{color:#fff}
.side-member p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.7;margin-bottom:16px}
.side-member .btn-x{width:100%}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(135deg,var(--dark) 0%,#2A1656 100%);
  border-radius:var(--r-xl);padding:40px;display:flex;align-items:center;gap:32px;
  justify-content:space-between;border:1px solid rgba(255,255,255,.08);
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,28px)}
.cta-band p{color:rgba(255,255,255,.7);font-size:14.5px;margin-top:10px;max-width:640px}
.cta-note{font-size:13px;color:rgba(255,255,255,.52);margin-top:16px}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:32px;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{color:rgba(255,255,255,.68);font-size:13.5px}
.footer-col a:hover{color:var(--purple-bright)}
.footer-col address{font-style:normal;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:44px;padding:20px 0 calc(24px + env(safe-area-inset-bottom));
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;display:none;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(26,18,48,.06);
}
.mobile-tab ul{display:flex}
.mobile-tab li{flex:1}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:58px;font-size:11.5px;color:var(--muted);position:relative;
}
.mobile-tab a i{font-size:17px}
.mobile-tab a.active{color:var(--purple);font-weight:600}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--purple);
}

/* ============ 断点 ============ */
@media (min-width:992px){
  .layout{grid-template-columns:minmax(0,1fr) 320px;gap:36px}
  .side-col{position:sticky;top:96px;align-self:start}
}
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-links{gap:20px}
  .nav-links a{font-size:14.5px}
  .article-card{padding:28px 24px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .post-cover img{aspect-ratio:16/9}
}
@media (max-width:767.98px){
  body{padding-bottom:76px}
  .wrap{padding:0 20px}
  .mobile-tab{display:block}
  .nav-links{display:none}
  .header-inner{height:60px;gap:12px}
  .header-link{display:none}
  .logo{font-size:15.5px}
  .logo-sub{display:block;font-size:11px;margin-left:5px}
  .logo-mark{width:30px;height:30px;flex:0 0 30px;font-size:15px;border-radius:9px}
  .section{padding:48px 0}
  .post-head{padding:28px 0 0}
  .post-head h1{margin:14px 0 14px}
  .post-meta{gap:14px;padding-bottom:20px}
  .layout{padding:28px 0 48px;gap:24px}
  .article-card{padding:22px 18px;border-radius:var(--r-md)}
  .article-body{font-size:16px}
  .post-nav{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .side-col{position:static}
}
@media (max-width:575.98px){
  .card-grid{grid-template-columns:1fr}
  .badge-x{font-size:11.5px}
  .cta-band{border-radius:var(--r-lg)}
}

/* roulang page: category1 */
:root{
  --brand:#4B22A8;
  --brand-dark:#3A1A82;
  --brand-soft:#EFEAFB;
  --brand-soft-2:#FAF9FE;
  --cyan:#00D6A4;
  --coral:#FF5B3A;
  --coral-dark:#E84A2A;
  --dark:#140F24;
  --dark-2:#1C1633;
  --bg:#F5F3FA;
  --surface:#FFFFFF;
  --text:#16101F;
  --muted:#6B6478;
  --line:#E4E0EF;
  --mint:#EAFBF6;
  --danger:#E5484D;
  --radius-sm:8px;
  --radius-btn:12px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-1:0 2px 8px rgba(26,18,48,.06);
  --shadow-2:0 12px 32px rgba(26,18,48,.10);
  --focus:0 0 0 3px rgba(108,76,241,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  padding-bottom:76px;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-button:focus-visible{
  outline:none;box-shadow:var(--focus);border-radius:6px;
}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:992px){.wrap{padding:0 24px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--dark);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(10,6,24,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px;}
@media(min-width:768px){.header-inner{height:72px;}}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.01em;}
.logo:hover{color:#fff;}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cyan) 0%,var(--brand) 100%);
  color:#fff;font-size:17px;font-weight:700;
}
.logo-sub{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.6);letter-spacing:.06em;line-height:1.2;}
.nav-links{display:none;align-items:center;gap:6px;}
@media(min-width:768px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;color:rgba(255,255,255,.72);font-size:15px;
  padding:8px 12px;border-radius:var(--radius-sm);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--cyan);
}
.header-right{display:flex;align-items:center;gap:10px;}
.header-link{display:none;color:rgba(255,255,255,.8);font-size:14px;padding:6px 4px;}
.header-link:hover{color:#fff;}
@media(min-width:768px){.header-link{display:inline-block;}}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;line-height:1;
  transition:transform .18s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-sm-x{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary-x:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost-x{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost-x:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-coral-x{background:var(--coral);color:#fff;box-shadow:0 2px 8px rgba(255,91,58,.24);}
.btn-coral-x:hover{background:var(--coral-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,91,58,.28);}
.btn-coral-x:active{transform:translateY(0);}
.btn-light-x{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.28);}
.btn-light-x:hover{background:rgba(255,255,255,.18);color:#fff;}

/* ---------- Breadcrumb ---------- */
.crumb{background:#fff;border-bottom:1px solid var(--line);}
.crumb-inner{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding:14px 0;flex-wrap:wrap;}
.crumb-inner a{color:var(--muted);}
.crumb-inner a:hover{color:var(--brand);}
.crumb-inner .sep{color:#C9C3DA;}
.crumb-inner .current{color:var(--muted);}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(20,15,36,.9) 0%,rgba(75,34,168,.78) 100%);
}
.page-hero .wrap{position:relative;z-index:2;}
.hero-inner{padding:56px 0 60px;max-width:820px;}
@media(min-width:992px){.hero-inner{padding:88px 0 92px;}}
.tag-x{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(0,214,164,.16);color:#6FF3D4;border:1px solid rgba(0,214,164,.36);
}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);line-height:1.24;font-weight:700;letter-spacing:.01em;
  margin:20px 0 18px;color:#fff;
}
.page-hero h1 em{font-style:normal;color:#7BF0D2;}
.hero-lead{font-size:16px;line-height:1.9;color:rgba(255,255,255,.84);max-width:680px;}
@media(min-width:992px){.hero-lead{font-size:17px;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;
  margin-top:36px;max-width:640px;
}
.hero-stat{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);padding:14px 16px;
}
.hero-stat b{display:block;font-size:22px;font-weight:700;color:#fff;letter-spacing:.01em;}
.hero-stat span{display:block;font-size:12.5px;color:rgba(255,255,255,.66);margin-top:2px;line-height:1.5;}
.hero-deco{
  position:absolute;right:-40px;top:-40px;width:280px;height:280px;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:16px 16px;opacity:.09;
}
.hero-deco-2{
  position:absolute;left:-60px;bottom:-70px;width:220px;height:220px;pointer-events:none;
  background:linear-gradient(45deg,rgba(0,214,164,.32),rgba(0,214,164,0));transform:rotate(45deg);
  opacity:.5;border-radius:32px;
}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media(min-width:992px){.section{padding:96px 0;}}
.section-tight{padding:44px 0;}
@media(min-width:992px){.section-tight{padding:64px 0;}}
.sec-head{max-width:760px;margin-bottom:32px;}
.sec-head h2{
  font-size:clamp(22px,2.4vw,30px);line-height:1.34;font-weight:700;letter-spacing:.01em;
  margin-bottom:12px;
}
.sec-head p{color:var(--muted);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);letter-spacing:.06em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--cyan);}

/* ---------- Two column layout ---------- */
.layout-2col{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:992px){.layout-2col{grid-template-columns:258px minmax(0,1fr);gap:44px;align-items:start;}}
.anchor-nav{position:relative;}
@media(min-width:992px){.anchor-nav{position:sticky;top:104px;}}
.anchor-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:20px;
}
.anchor-card h2{font-size:15px;font-weight:700;letter-spacing:.02em;margin-bottom:14px;}
.anchor-card h2 i{color:var(--cyan);margin-right:6px;}
.anchor-list{display:flex;flex-wrap:wrap;gap:8px;}
@media(min-width:992px){.anchor-list{flex-direction:column;gap:2px;flex-wrap:nowrap;}}
.anchor-list a{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);
  padding:9px 12px;border-radius:10px;border-left:3px solid transparent;
}
.anchor-list a:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.anchor-list a .num{
  font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);
  width:22px;height:22px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 22px;
}
.anchor-note{
  margin-top:16px;padding:14px;border-radius:var(--radius-btn);
  background:var(--mint);border-left:3px solid var(--cyan);
  font-size:13px;line-height:1.7;color:#0E5E4C;
}

.story-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.story-block + .story-block{margin-top:24px;}
.story-grid{display:grid;grid-template-columns:1fr;gap:0;}
@media(min-width:768px){.story-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);}}
.story-grid.rev .story-media{order:-1;}
@media(min-width:768px){.story-grid.rev .story-media{order:0;}}
.story-media{position:relative;min-height:210px;background:var(--dark-2);}
.story-media img{width:100%;height:100%;min-height:210px;object-fit:cover;border-radius:0;}
@media(min-width:768px){.story-media img{min-height:100%;}}
.story-media .badge-float{
  position:absolute;left:14px;top:14px;height:26px;padding:0 12px;border-radius:999px;
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  background:rgba(20,15,36,.72);color:#fff;border:1px solid rgba(255,255,255,.18);
}
.story-body{padding:24px 22px 26px;}
@media(min-width:992px){.story-body{padding:30px 30px 32px;}}
.story-body h3{font-size:19px;font-weight:600;line-height:1.44;margin-bottom:12px;}
.story-body p{font-size:15.2px;color:#3B3448;line-height:1.9;}
.story-body p + p{margin-top:12px;}
.check-list{margin-top:16px;display:grid;gap:8px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:#3B3448;line-height:1.7;}
.check-list li i{color:var(--cyan);font-size:13px;margin-top:7px;flex:0 0 14px;}

/* ---------- HUD panel ---------- */
.hud{
  margin-top:24px;background:var(--dark);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);padding:26px 22px;color:#fff;
}
@media(min-width:992px){.hud{padding:34px 34px;}}
.hud h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.hud > p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;}
.hud-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:22px;}
@media(min-width:768px){.hud-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.hud-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);padding:16px;
}
.hud-item b{display:block;font-size:24px;font-weight:700;color:#7BF0D2;letter-spacing:.01em;}
.hud-item span{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:4px;line-height:1.6;}
.hud-bar{margin-top:22px;}
.hud-bar .row-line{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.hud-bar .row-line .name{font-size:13.5px;color:rgba(255,255,255,.78);width:110px;flex:0 0 110px;}
.hud-bar .row-line .track{flex:1;height:6px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;}
.hud-bar .row-line .fill{height:100%;border-radius:999px;background:linear-gradient(135deg,var(--cyan),var(--brand));}
.hud-bar .row-line .val{font-size:13px;color:rgba(255,255,255,.6);width:42px;text-align:right;flex:0 0 42px;}

/* ---------- Cards grid ---------- */
.grid-cards{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:576px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media(min-width:992px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.point-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6CEEF;}
.point-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.point-card p{font-size:14.6px;color:var(--muted);line-height:1.85;}
.point-card p + p{margin-top:8px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12.5px;font-weight:500;background:var(--brand-soft-2);color:var(--brand);
  border:1px solid var(--line);
}
.chip.mint{background:var(--mint);color:#0E5E4C;border-color:#C6F0E4;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion-x .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
}
.accordion-x .accordion-item:last-child{margin-bottom:0;}
.accordion-x .accordion-button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 20px;background:#fff;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);cursor:pointer;box-shadow:none;
  transition:color .2s ease,background-color .2s ease;
}
.accordion-x .accordion-button:hover{color:var(--brand);background:var(--brand-soft-2);}
.accordion-x .accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.accordion-x .accordion-button::after{display:none;}
.accordion-x .chev{
  flex:0 0 18px;width:18px;height:18px;color:var(--muted);
  transition:transform .25s ease,color .2s ease;
}
.accordion-x .accordion-button:not(.collapsed) .chev{transform:rotate(180deg);color:var(--brand);}
.accordion-x .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--brand);}
.accordion-x .accordion-body{padding:0 20px 20px;font-size:15px;color:var(--muted);line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 56px;}
@media(min-width:992px){.cta-band{padding:0 0 96px;}}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,var(--dark) 0%,var(--brand) 100%);
  color:#fff;padding:38px 24px;
}
@media(min-width:992px){.cta-box{padding:52px 48px;}}
.cta-box::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:260px;height:260px;
  border-radius:40px;transform:rotate(45deg);
  background:linear-gradient(45deg,rgba(0,214,164,.24),rgba(0,214,164,0));
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:992px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px;}}
.cta-inner h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.36;margin-bottom:10px;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.74);line-height:1.85;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:48px 0 0;margin-top:0;}
@media(min-width:992px){.site-footer{padding:64px 0 0;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;}}
@media(min-width:992px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:28px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px;}
.footer-about{font-size:13.6px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:13.6px;color:rgba(255,255,255,.6);}
.footer-col a:hover{color:#A98BFF;}
.footer-col address{font-style:normal;font-size:13.6px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 calc(20px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Mobile tab bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:flex;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:768px){.tabbar{display:none;}}
.tabbar a{
  flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11.5px;color:var(--muted);position:relative;
}
.tabbar a i{font-size:17px;}
.tabbar a.active{color:var(--brand);font-weight:600;}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);
}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --purple:#4B22A8;
  --purple-dark:#3A1A82;
  --purple-soft:#EDE8FB;
  --purple-line:rgba(75,34,168,.18);
  --cyan:#00D6A4;
  --cyan-soft:#EAFBF6;
  --coral:#FF5B3A;
  --coral-dark:#E8482A;
  --ink:#16101F;
  --muted:#6B6478;
  --line:#E4E0EF;
  --bg:#F5F3FA;
  --card:#FFFFFF;
  --dark:#140F24;
  --dark-2:#1C1633;
  --r-sm:8px;
  --r-btn:12px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,18,48,.06);
  --sh-2:0 12px 32px rgba(26,18,48,.10);
  --gap:24px;
  --sec-y:96px;
  --focus-ring:0 0 0 3px rgba(108,76,241,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--purple);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--purple-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;color:var(--ink);}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:6px;}
/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .wrap{padding-left:24px;padding-right:24px;}
}
.section{padding:56px 0;}
@media (min-width:992px){
  .section{padding:var(--sec-y) 0;}
}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--purple);
  background:var(--purple-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;margin-bottom:12px;}
.section-head p{font-size:15px;color:var(--muted);margin:0;}
/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  min-height:68px;
  display:flex;align-items:center;gap:20px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;color:var(--ink);
  letter-spacing:.01em;white-space:nowrap;
}
.logo:hover{color:var(--purple);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  color:#fff;font-size:17px;font-weight:700;
}
.logo-sub{
  display:block;font-size:11px;font-weight:500;color:var(--muted);
  line-height:1.2;letter-spacing:0;
}
.nav-links{
  display:none;
  margin-left:auto;
  gap:26px;
}
.nav-links a{
  position:relative;
  font-size:15px;color:#3C3549;padding:22px 0;
  display:inline-block;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--purple);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--purple);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--purple);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-links + .header-right{margin-left:0;}
.header-link{font-size:14px;color:#3C3549;}
.header-link:hover{color:var(--purple);}
@media (min-width:768px){
  .nav-links{display:flex;}
}
/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  padding:12px 22px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  line-height:1.2;
}
.btn-sm-x{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-primary-x{background:var(--purple);color:#fff;}
.btn-primary-x:hover{background:var(--purple-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(75,34,168,.24);}
.btn-primary-x:active{transform:translateY(0);box-shadow:none;}
.btn-ghost-x{background:transparent;color:var(--purple);border-color:var(--purple-line);}
.btn-ghost-x:hover{background:var(--purple-soft);color:var(--purple-dark);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.36);}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-coral-x{background:var(--coral);color:#fff;}
.btn-coral-x:hover{background:var(--coral-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,91,58,.28);}
.btn-coral-x:active{transform:translateY(0);box-shadow:none;}
.btn-link-x{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--purple);
  text-decoration:underline;text-underline-offset:3px;
}
.btn-link-x:hover{color:var(--purple-dark);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
/* ============ 页面标题带 ============ */
.page-hero{
  position:relative;
  color:#fff;
  background-image:linear-gradient(105deg,rgba(20,15,36,.94) 0%,rgba(28,22,51,.86) 52%,rgba(75,34,168,.66) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  padding:76px 0 68px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:280px;height:280px;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  opacity:.12;transform:rotate(45deg);border-radius:32px;pointer-events:none;
}
.page-hero .wrap{position:relative;z-index:1;}
.page-hero h1{
  color:#fff;
  font-size:clamp(26px,3.8vw,44px);
  line-height:1.25;font-weight:700;
  max-width:820px;margin:16px 0 16px;
}
.page-hero p{
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);
  max-width:660px;margin:0;
}
.page-hero .pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:var(--r-pill);
  background:rgba(0,214,164,.14);
  border:1px solid rgba(0,214,164,.4);
  color:#7CF0D2;font-size:13px;font-weight:600;
}
.crumb{
  font-size:13px;color:rgba(255,255,255,.62);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:20px;
}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(255,255,255,.35);}
.crumb .current{color:rgba(255,255,255,.62);}
/* ============ 数据指标条 ============ */
.stat-strip{
  display:grid;gap:16px;
  grid-template-columns:repeat(2,1fr);
  margin-top:-38px;position:relative;z-index:2;
}
@media (min-width:768px){ .stat-strip{grid-template-columns:repeat(4,1fr);} }
.stat-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 18px;box-shadow:var(--sh-1);
}
.stat-card .num{
  font-size:26px;font-weight:700;color:var(--purple);line-height:1.2;
  display:block;letter-spacing:0;
}
.stat-card .label{font-size:13px;color:var(--muted);margin-top:6px;display:block;}
/* ============ 两栏对照 ============ */
.compare-list{display:flex;flex-direction:column;gap:48px;}
@media (min-width:992px){ .compare-list{gap:72px;} }
.compare-row{
  display:grid;gap:28px;align-items:center;
  grid-template-columns:1fr;
}
@media (min-width:992px){
  .compare-row{grid-template-columns:1.02fr .98fr;gap:56px;}
  .compare-row.is-flipped .compare-media{order:2;}
  .compare-row.is-flipped .compare-text{order:1;}
}
.compare-media{
  position:relative;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:#fff;
}
.compare-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;}
.compare-media .tagline{
  position:absolute;left:16px;bottom:16px;
  background:rgba(20,15,36,.78);color:#fff;
  font-size:12px;padding:6px 12px;border-radius:var(--r-pill);
}
.compare-text h2{font-size:clamp(21px,2.2vw,28px);line-height:1.35;margin-bottom:14px;}
.compare-text > p{color:var(--muted);font-size:15.5px;margin-bottom:20px;}
.text-list{display:flex;flex-direction:column;gap:14px;}
.text-list li{
  display:flex;gap:12px;font-size:15px;line-height:1.75;color:#2C2536;
}
.text-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:9px;
  border-radius:2px;background:linear-gradient(135deg,var(--cyan),var(--purple));
}
/* ============ 横向图文卡片网格 ============ */
.feature-grid{
  display:grid;gap:16px;
  grid-template-columns:1fr;
}
@media (min-width:576px){ .feature-grid{grid-template-columns:1fr;gap:16px;} }
@media (min-width:768px){ .feature-grid{grid-template-columns:repeat(2,1fr);gap:20px;} }
@media (min-width:992px){ .feature-grid{grid-template-columns:repeat(3,1fr);gap:var(--gap);} }
.feature-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--purple-line);}
.feature-card .thumb{
  flex:0 0 96px;width:96px;height:78px;border-radius:12px;overflow:hidden;
}
.feature-card .thumb img{width:96px;height:78px;object-fit:cover;}
.feature-card h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:6px;}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.7;margin:0;}
.feature-card .meta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--purple);font-weight:600;
  background:var(--purple-soft);border-radius:var(--r-pill);
  padding:3px 10px;margin-bottom:8px;
}
/* ============ 深色会员引导条 ============ */
.member-cta{
  position:relative;
  background:linear-gradient(120deg,var(--dark) 0%,var(--dark-2) 46%,var(--purple) 100%);
  border-radius:var(--r-lg);
  padding:40px 28px;
  color:#fff;
  overflow:hidden;
}
.member-cta::before{
  content:"";position:absolute;left:-40px;top:-40px;width:180px;height:180px;
  background:repeating-linear-gradient(45deg,rgba(0,214,164,.16) 0 6px,transparent 6px 14px);
  opacity:.5;
}
.member-cta .inner{
  position:relative;z-index:1;
  display:grid;gap:24px;align-items:center;
  grid-template-columns:1fr;
}
@media (min-width:992px){
  .member-cta{padding:52px 48px;}
  .member-cta .inner{grid-template-columns:1fr auto;gap:40px;}
}
.member-cta h2{color:#fff;font-size:clamp(21px,2.2vw,28px);line-height:1.35;margin-bottom:12px;}
.member-cta p{color:rgba(255,255,255,.76);font-size:15px;margin:0;max-width:620px;}
.member-cta .cta-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:14px;}
.member-cta .actions{display:flex;flex-wrap:wrap;gap:14px;}
/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.faq-list .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-list .accordion-item:last-child{margin-bottom:0;}
.faq-list .accordion-header{margin:0;}
.faq-list .accordion-button{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:14px 20px;
  font-size:16px;font-weight:600;color:var(--ink);
  background:#fff;
  border:0;border-radius:0;
  box-shadow:none;
  transition:color .2s ease,background .2s ease;
}
.faq-list .accordion-button:not(.collapsed){
  color:var(--purple);
  background:#FBFAFE;
  box-shadow:inset 3px 0 0 0 var(--purple);
}
.faq-list .accordion-button:hover{color:var(--purple);}
.faq-list .accordion-button::after{
  content:"";flex:0 0 18px;width:18px;height:18px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%236B6478' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:18px 18px;
  margin-left:0;
  transition:transform .25s ease;
}
.faq-list .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%234B22A8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}
.faq-list .accordion-body{
  padding:2px 20px 20px;
  font-size:15px;line-height:1.9;color:var(--muted);
  background:#FBFAFE;
}
/* ============ 提示块 ============ */
.tip-box{
  background:var(--cyan-soft);
  border-left:4px solid var(--purple);
  border-radius:var(--r-sm);
  padding:16px 18px;
  font-size:14px;line-height:1.8;color:#215A4A;
}
/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:56px 0 24px;
  margin-top:8px;
  padding-bottom:calc(24px + 72px);
}
@media (min-width:768px){ .site-footer{padding-bottom:24px;} }
.footer-grid{
  display:grid;gap:32px;
  grid-template-columns:1fr;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(3,1fr);} }
@media (min-width:992px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;} }
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:16px;font-weight:700;margin-bottom:14px;
}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin:0;max-width:340px;}
.footer-col h3{
  color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.68);font-size:13.5px;}
.footer-col a:hover{color:#B79BFF;}
.footer-col address{
  font-style:normal;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);margin:0;
}
.footer-bottom{
  margin-top:36px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:flex;
  background:#fff;
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 12px rgba(26,18,48,.06);
}
.mobile-tab a{
  flex:1 1 0;
  min-width:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;
  height:60px;
  position:relative;
  font-size:11px;color:var(--muted);
  letter-spacing:.01em;
}
.mobile-tab a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tab a.active{color:var(--purple);font-weight:600;}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--purple);
}
.mobile-tab a.active svg{stroke:var(--purple);}
@media (min-width:768px){ .mobile-tab{display:none;} }
@media (max-width:767.98px){ body{padding-bottom:72px;} }
/* ============ 其他 ============ */
.grid-2{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){ .grid-2{grid-template-columns:repeat(2,1fr);gap:var(--gap);} }
.note-line{
  font-size:13px;color:var(--muted);
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;
}
.note-line span{display:inline-flex;align-items:center;gap:6px;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block;}