/* roulang page: index */
:root{
  --brand:#176B87;
  --brand-dark:#0F556B;
  --brand-soft:#E7F2F6;
  --brand-line:#BEDCE6;
  --accent:#F08A3C;
  --accent-soft:#FDEEE1;
  --green:#2D9C74;
  --green-soft:#E5F4EE;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --ink:#152434;
  --muted:#5B6B7C;
  --line:#DCE5EE;
  --dark:#0F2430;
  --dark-2:#16323F;
  --radius-lg:24px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(21,36,52,.08);
  --shadow-hover:0 16px 36px rgba(21,36,52,.12);
  --space:5.5rem;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:1.0625rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1rem;}
h1,h2,h3,h4,h5{color:var(--ink);margin:0;line-height:1.35;font-weight:700;}
h1{font-size:clamp(2.25rem,4vw,3.75rem);font-weight:800;letter-spacing:-.5px;}
h2{font-size:clamp(1.75rem,2.6vw,2.5rem);font-weight:700;}
h3{font-size:1.375rem;font-weight:700;}
.container{max-width:1240px;padding-left:1.25rem;padding-right:1.25rem;}
.section{padding:var(--space) 0;}
.section-tight{padding:3.5rem 0;}
.section-head{max-width:760px;margin-bottom:2.5rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.875rem;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-soft);border-radius:999px;padding:.35rem .9rem;margin-bottom:1rem;
}
.section-head h2{margin-bottom:.85rem;}
.section-head p{color:var(--muted);font-size:1.0625rem;margin:0;}
.text-muted-c{color:var(--muted);}

/* 按钮 */
.btn-main,.btn-ghost,.btn-soft,.btn-dark-line{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  min-height:50px;padding:0 1.75rem;border-radius:var(--radius-sm);
  font-size:1rem;font-weight:700;border:1.5px solid transparent;
  cursor:pointer;transition:all .22s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(23,107,135,.24);}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(23,107,135,.3);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-soft{background:var(--brand-soft);color:var(--brand);border-color:transparent;}
.btn-soft:hover{background:#D7EAF1;color:var(--brand-dark);}
.btn-dark-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-dark-line:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(240,138,60,.28);}
.btn-accent:hover{background:#DC7628;color:#fff;}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible,.btn-dark-line:focus-visible,.btn-accent:focus-visible{
  outline:3px solid rgba(23,107,135,.35);outline-offset:3px;
}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(21,36,52,.05);
  backdrop-filter:saturate(120%);
}
.site-header .navbar{padding:.75rem 0;min-height:80px;}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  background:linear-gradient(140deg,var(--brand) 0%,#1E8AA8 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;box-shadow:0 6px 16px rgba(23,107,135,.28);flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:1.125rem;font-weight:800;color:var(--ink);letter-spacing:-.2px;}
.brand-sub{font-size:.75rem;color:var(--muted);font-weight:500;letter-spacing:.06em;}
.brand:hover .brand-name{color:var(--brand);}
.navbar-nav.nav-links{gap:.3rem;align-items:center;}
.nav-links .nav-link{
  color:var(--ink);font-weight:600;font-size:1rem;
  padding:.55rem 1rem;border-radius:999px;transition:all .2s ease;
}
.nav-links .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links .nav-link.active{color:var(--brand);background:var(--brand-soft);}
.nav-actions{display:flex;align-items:center;gap:.65rem;}
.nav-actions .btn-main,.nav-actions .btn-ghost{min-height:46px;padding:0 1.35rem;font-size:.95rem;}
.navbar-toggler{border:1px solid var(--line);border-radius:12px;padding:.45rem .65rem;color:var(--ink);}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(23,107,135,.25);}
@media (max-width:991.98px){
  .navbar-collapse{
    margin-top:1rem;padding:1rem;border:1px solid var(--line);
    border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);
  }
  .navbar-nav.nav-links{align-items:stretch;gap:.35rem;}
  .nav-links .nav-link{display:block;padding:.8rem 1rem;}
  .nav-actions{flex-direction:column;align-items:stretch;margin-top:1rem;padding-top:1rem;border-top:1px dashed var(--line);}
  .nav-actions .btn-main,.nav-actions .btn-ghost{width:100%;}
}

/* Hero */
.hero{position:relative;overflow:hidden;padding:4.5rem 0 5rem;background:linear-gradient(180deg,#FFFFFF 0%,#F1F6FA 100%);}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.12;
}
.hero::after{
  content:"";position:absolute;right:-220px;top:-160px;width:560px;height:560px;
  border:2px dashed rgba(23,107,135,.18);border-radius:50%;
}
.hero .container{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:.5rem;
  background:#fff;border:1px solid var(--brand-line);color:var(--brand);
  font-size:.875rem;font-weight:700;border-radius:999px;padding:.4rem 1rem;margin-bottom:1.4rem;
  box-shadow:0 4px 14px rgba(23,107,135,.08);
}
.hero h1{margin-bottom:1.2rem;color:var(--ink);}
.hero h1 .hl{color:var(--brand);position:relative;}
.hero-lead{font-size:1.125rem;color:var(--muted);max-width:560px;margin-bottom:1.75rem;}
.hero-meta{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.6rem;}
.meta-chip{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.8125rem;font-weight:600;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:.32rem .8rem;
}
.meta-chip i{color:var(--green);}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:0 24px 50px rgba(21,36,52,.16);
}
.hero-shot img{width:100%;aspect-ratio:16/11;object-fit:cover;background:#E8EFF5;}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:.85rem 1.05rem;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:.7rem;min-width:190px;
}
.hero-float .dot{width:38px;height:38px;border-radius:11px;background:var(--green-soft);color:var(--green);display:flex;align-items:center;justify-content:center;font-size:1rem;}
.hero-float strong{display:block;font-size:.95rem;color:var(--ink);line-height:1.2;}
.hero-float span{font-size:.78rem;color:var(--muted);}
@media (max-width:991.98px){
  .hero{padding:3rem 0 3.5rem;}
  .hero-lead{max-width:none;}
  .hero-visual{margin-top:2.5rem;}
  .hero-float{left:auto;right:12px;bottom:-18px;}
}

/* 截图画廊 */
.shot-nav{display:flex;gap:.6rem;}
.track-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  font-size:1rem;transition:all .2s ease;
}
.track-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px rgba(23,107,135,.22);}
.track-btn:focus-visible{outline:3px solid rgba(23,107,135,.3);outline-offset:2px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;flex-wrap:wrap;margin-bottom:2.2rem;}
.head-row .section-head{margin-bottom:0;}
.shot-track{
  display:flex;gap:1.25rem;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:.35rem .35rem 1.4rem;margin:-.35rem;
  scrollbar-width:thin;
}
.shot-track::-webkit-scrollbar{height:6px;}
.shot-track::-webkit-scrollbar-thumb{background:#CBD9E4;border-radius:99px;}
.shot-item{
  flex:0 0 calc(33.333% - .84rem);scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.shot-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.shot-item img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#E8EFF5;}
.shot-body{padding:1.15rem 1.25rem 1.35rem;}
.shot-body h3{font-size:1.125rem;margin-bottom:.45rem;}
.shot-body p{font-size:.9375rem;color:var(--muted);margin:0;line-height:1.7;}
@media (max-width:991.98px){.shot-item{flex:0 0 calc(50% - .625rem);}}
@media (max-width:575.98px){
  .shot-item{flex:0 0 86%;}
  .head-row{gap:1rem;}
  .shot-nav{display:none;}
}

/* 系统要求 */
.req-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:2.5rem;box-shadow:var(--shadow);
}
.req-list{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.req-item{
  display:flex;gap:.9rem;align-items:flex-start;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:1.05rem 1.15rem;transition:all .2s ease;
}
.req-item:hover{background:#fff;border-color:var(--brand-line);box-shadow:0 8px 20px rgba(21,36,52,.07);}
.req-ico{
  width:40px;height:40px;flex:none;border-radius:11px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:1rem;
}
.req-item:nth-child(2n) .req-ico{background:var(--accent-soft);color:var(--accent);}
.req-item:nth-child(3n) .req-ico{background:var(--green-soft);color:var(--green);}
.req-item strong{display:block;font-size:1rem;color:var(--ink);line-height:1.4;margin-bottom:.15rem;}
.req-item span{font-size:.9375rem;color:var(--muted);}
.req-note{display:flex;align-items:center;gap:.6rem;margin-top:1.6rem;font-size:.9375rem;color:var(--muted);}
.req-note i{color:var(--accent);}
@media (max-width:767.98px){
  .req-wrap{padding:1.5rem;}
  .req-list{grid-template-columns:1fr;}
}

/* 评价墙 */
.review-band{background:linear-gradient(180deg,#FFFFFF 0%,#EEF4F8 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.review-track{
  display:flex;gap:1.15rem;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:.35rem .35rem 1.3rem;margin:-.35rem;
}
.review-track::-webkit-scrollbar{height:6px;}
.review-track::-webkit-scrollbar-thumb{background:#CBD9E4;border-radius:99px;}
.review-card{
  flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:1.35rem 1.4rem;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:.75rem;margin-bottom:.85rem;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:none;
  background:var(--brand-soft);color:var(--brand);font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:.95rem;
}
.review-name{font-weight:700;font-size:.98rem;line-height:1.3;}
.review-dev{font-size:.78rem;color:var(--muted);}
.stars{color:var(--accent);font-size:.82rem;letter-spacing:.1em;margin-bottom:.5rem;}
.review-card p{font-size:.98rem;color:var(--ink);margin:0;line-height:1.7;}
@media (max-width:575.98px){.review-card{flex:0 0 84%;}}

/* 下载区 */
.download-band{
  background:radial-gradient(1200px 400px at 15% 0%,#1C4557 0%,var(--dark) 55%);
  border-radius:var(--radius-lg);padding:3.25rem;color:#fff;position:relative;overflow:hidden;
}
.download-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;
  border:2px solid rgba(255,255,255,.08);border-radius:50%;
}
.download-band h2{color:#fff;margin-bottom:.85rem;}
.download-band p{color:#BFD2DD;margin-bottom:1.6rem;max-width:520px;}
.download-band .btn-row{position:relative;z-index:2;}
.qr-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:1.1rem;display:flex;gap:1rem;align-items:center;
}
.qr-box{
  width:104px;height:104px;flex:none;border-radius:12px;background:#fff;padding:8px;
}
.qr-inner{
  width:100%;height:100%;border-radius:6px;
  background-image:
    repeating-linear-gradient(90deg,#152434 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#152434 0 6px,transparent 6px 12px);
  background-blend-mode:multiply;opacity:.9;
  border:3px solid #fff;
}
.qr-card strong{display:block;font-size:.98rem;color:#fff;line-height:1.4;}
.qr-card span{font-size:.82rem;color:#A9C1CE;}
.platform-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.2rem;}
.platform-tags span{
  font-size:.8125rem;color:#CFE0E8;border:1px solid rgba(255,255,255,.2);
  border-radius:999px;padding:.28rem .8rem;
}
@media (max-width:991.98px){
  .download-band{padding:2.25rem 1.5rem;}
  .qr-card{margin-top:1.75rem;}
}

/* 资讯 */
.news-feature{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.news-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#E8EFF5;}
.news-feature .nf-body{padding:1.6rem 1.75rem 1.9rem;}
.news-feature h3{font-size:1.375rem;margin:.7rem 0 .6rem;color:var(--ink);line-height:1.45;}
.news-feature p{font-size:.98rem;color:var(--muted);margin:0;line-height:1.75;}
.news-tag{
  display:inline-flex;align-items:center;gap:.35rem;font-size:.78rem;font-weight:700;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:.22rem .7rem;
}
.news-tag.tag-alt{color:var(--accent);background:var(--accent-soft);}
.news-meta{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;font-size:.8125rem;color:var(--muted);}
.news-list{display:flex;flex-direction:column;gap:.9rem;}
.news-item{
  display:flex;gap:1rem;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:1rem;box-shadow:0 6px 18px rgba(21,36,52,.05);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.news-item img{width:112px;height:80px;flex:none;border-radius:12px;object-fit:cover;background:#E8EFF5;}
.news-item h3{font-size:1rem;line-height:1.5;margin-bottom:.35rem;color:var(--ink);}
.news-item:hover h3{color:var(--brand);}
.news-item .news-meta{font-size:.78rem;}
.empty-state{
  background:#fff;border:1px dashed var(--brand-line);border-radius:var(--radius-lg);
  padding:3.5rem 1.5rem;text-align:center;color:var(--muted);
}
.empty-state i{font-size:1.8rem;color:var(--brand-line);display:block;margin-bottom:.75rem;}
.empty-state p{margin:0;font-size:1rem;}
@media (max-width:575.98px){
  .news-item img{width:88px;height:66px;}
  .news-feature .nf-body{padding:1.25rem;}
}

/* FAQ */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius)!important;margin-bottom:.85rem;
  background:#fff;overflow:hidden;box-shadow:0 6px 18px rgba(21,36,52,.05);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--brand-line);box-shadow:var(--shadow);}
.faq-accordion .accordion-button{
  background:#fff;color:var(--ink);font-weight:700;font-size:1.0625rem;
  padding:1.15rem 1.4rem;min-height:56px;box-shadow:none;border:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);background:var(--brand-soft);}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(23,107,135,.2);outline-offset:-3px;}
.faq-accordion .accordion-button::after{display:none;}
.faq-mark{
  width:30px;height:30px;border-radius:50%;flex:none;margin-left:auto;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;
  transition:all .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed) .faq-mark{background:var(--brand);color:#fff;}
.faq-accordion .accordion-body{padding:0 1.4rem 1.35rem;color:var(--muted);font-size:1rem;line-height:1.8;background:#fff;}
.faq-accordion .accordion-button:not(.collapsed)+.accordion-collapse .accordion-body{background:var(--brand-soft);}

/* CTA 条 */
.cta-strip{
  background:linear-gradient(120deg,var(--brand) 0%,#1E8AA8 100%);
  border-radius:var(--radius-lg);padding:2.75rem 3rem;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(23,107,135,.24);
}
.cta-strip h2{color:#fff;font-size:clamp(1.5rem,2.2vw,2rem);margin-bottom:.4rem;}
.cta-strip p{color:rgba(255,255,255,.85);margin:0;font-size:1rem;}
.cta-strip .btn-ghost{background:#fff;border-color:#fff;color:var(--brand);}
.cta-strip .btn-ghost:hover{background:rgba(255,255,255,.86);color:var(--brand-dark);}
@media (max-width:767.98px){.cta-strip{padding:1.9rem 1.5rem;}}

/* 页脚 */
.site-footer{background:var(--dark);color:#C4D5DF;padding:4rem 0 0;margin-top:var(--space);}
.site-footer h3,.site-footer h4{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:.65rem;margin-bottom:1rem;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8FA9B7;}
.footer-desc{font-size:.9375rem;color:#9DB4C1;line-height:1.8;max-width:320px;}
.footer-col strong{
  display:block;color:#fff;font-size:.9375rem;font-weight:700;margin-bottom:1rem;letter-spacing:.04em;
}
.footer-links li{margin-bottom:.6rem;}
.footer-links a{color:#AFC5D1;font-size:.9375rem;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:.875rem;color:#8FA9B7;line-height:1.8;}
.footer-bottom{
  margin-top:3rem;border-top:1px solid rgba(255,255,255,.1);padding:1.5rem 0;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  font-size:.8125rem;color:#8FA9B7;
}
.footer-bottom a{color:#AFC5D1;}
.footer-bottom a:hover{color:#fff;}
@media (max-width:767.98px){
  .site-footer{padding-top:2.75rem;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;gap:.5rem;}
}

/* roulang page: article */
:root{
  --brand:#176B87;
  --brand-deep:#11526A;
  --brand-soft:#E7F2F6;
  --accent:#F08A3C;
  --accent-soft:#FDF0E4;
  --green:#2D9C74;
  --green-soft:#E5F5EE;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --ink:#152434;
  --muted:#5B6B7C;
  --line:#DCE5EE;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 10px 30px rgba(21,36,52,.08);
  --shadow-hover:0 16px 36px rgba(21,36,52,.12);
  --sp-1:.5rem;
  --sp-2:1rem;
  --sp-3:1.5rem;
  --sp-4:2rem;
  --sp-5:3rem;
  --sp-6:5rem;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:1rem;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.15rem}
.container{max-width:1240px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1240px}}
::selection{background:var(--brand-soft);color:var(--brand-deep)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(21,36,52,.05);
}
.site-header .container{position:relative}
.site-header .navbar{min-height:80px;display:flex;align-items:center;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  background:linear-gradient(150deg,var(--brand),#1E8AA8);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:1.1rem;box-shadow:0 8px 18px rgba(23,107,135,.28);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:1.125rem;font-weight:800;color:var(--ink);letter-spacing:.2px}
.brand-sub{font-size:.72rem;color:var(--muted);letter-spacing:.4px}
.nav-links{display:flex;align-items:center;gap:.35rem}
.nav-links .nav-link{
  position:relative;
  color:var(--ink);font-weight:600;font-size:.95rem;
  padding:.55rem .9rem;border-radius:999px;
  transition:color .18s ease,background .18s ease;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--brand);transition:width .22s ease;
}
.nav-links .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links .nav-link:hover::after{width:22px}
.nav-links .nav-link.active{color:var(--brand);background:var(--brand-soft)}
.nav-links .nav-link.active::after{width:22px}
.nav-actions{display:flex;align-items:center;gap:.65rem;padding:.4rem 0}
.btn-main,.btn-ghost,.btn-soft,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-weight:700;font-size:.95rem;border:1px solid transparent;
  transition:transform .16s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(23,107,135,.24)}
.btn-main:hover{background:var(--brand-deep);color:#fff;box-shadow:0 14px 28px rgba(23,107,135,.3)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#BFD9E3}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand)}
.btn-soft{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(240,138,60,.26)}
.btn-soft:hover{background:#DE7A2C;color:#fff}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible,.btn-line:focus-visible,
.nav-link:focus-visible,a:focus-visible,button:focus-visible{
  outline:3px solid rgba(23,107,135,.35);outline-offset:2px;
}
.btn-main:active,.btn-ghost:active,.btn-soft:active,.btn-line:active{transform:translateY(1px)}
.navbar-toggler{
  border:1px solid var(--line);border-radius:12px;padding:.45rem .7rem;
  color:var(--brand);background:#fff;box-shadow:none;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(23,107,135,.2)}
.navbar-toggler i{font-size:1.05rem}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:2.5rem 0 3rem;
  background:
    linear-gradient(180deg,rgba(246,248,251,.94),rgba(246,248,251,.98)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:260px;height:260px;
  border:2px dashed rgba(23,107,135,.16);border-radius:50%;pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:.85rem;color:var(--muted);margin-bottom:1.15rem}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:.62rem;opacity:.7}
.crumb .current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:.45rem;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:.8rem;font-weight:700;letter-spacing:.5px;
  padding:.35rem .8rem;border-radius:999px;margin-bottom:1rem;
}
.article-hero h1{
  font-size:clamp(1.85rem,3.4vw,2.9rem);
  font-weight:800;line-height:1.35;letter-spacing:-.2px;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin-top:1.25rem}
.chip{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.82rem;font-weight:600;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:.32rem .8rem;
}
.chip i{color:var(--brand);font-size:.82rem}
.chip.tag{background:var(--accent-soft);border-color:#F6D8BE;color:#A65B18}
.chip.tag i{color:var(--accent)}

/* ---------- 主体布局 ---------- */
.article-wrap{padding:var(--sp-6) 0}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--shadow);padding:clamp(1.35rem,3vw,2.75rem);
}
.prose{max-width:780px;margin:0 auto;font-size:1.0625rem;line-height:1.9;color:#22303F}
.prose > *:first-child{margin-top:0}
.prose h2{
  font-size:clamp(1.35rem,2.2vw,1.65rem);font-weight:700;line-height:1.5;
  margin:2rem 0 1rem;padding-left:.85rem;border-left:4px solid var(--brand);
}
.prose h3{font-size:1.25rem;font-weight:700;margin:1.5rem 0 .75rem;color:var(--ink)}
.prose h4{font-size:1.0625rem;font-weight:700;margin:1.25rem 0 .6rem}
.prose p{margin:0 0 1.05em}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.35rem}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--brand)}
.prose img{width:100%;height:auto;border-radius:14px;margin:1.35rem 0;box-shadow:var(--shadow)}
.prose blockquote{
  margin:1.5rem 0;padding:1rem 1.25rem;
  background:var(--brand-soft);border-left:4px solid var(--brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:#25414E;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--brand-deep)}
.prose table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:1.4rem 0;font-size:.95rem;
}
.prose table th,.prose table td{border:1px solid var(--line);padding:.6rem .85rem;text-align:left}
.prose table th{background:var(--brand-soft);font-weight:700;color:var(--brand-deep)}
.prose hr{border:none;border-top:1px solid var(--line);margin:2rem 0}
.prose code{background:#EEF3F7;border-radius:6px;padding:.1rem .35rem;font-size:.92em}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:100px;display:flex;flex-direction:column;gap:1.25rem}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:1.5rem;
}
.side-card h2,.side-card .side-title{
  font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:.9rem;
  display:flex;align-items:center;gap:.5rem;
}
.side-card .side-title i{color:var(--brand)}
.side-dl{
  background:linear-gradient(160deg,#123A4B,#176B87 70%);
  color:#DCEBF2;border:none;box-shadow:0 18px 36px rgba(18,58,75,.28);
}
.side-dl .side-title{color:#fff}
.side-dl .side-title i{color:var(--accent)}
.side-dl p{font-size:.9rem;line-height:1.75;color:#C6DDE7;margin-bottom:1.1rem}
.side-dl .btn-main{width:100%;background:var(--accent);box-shadow:0 10px 22px rgba(240,138,60,.3);margin-bottom:.6rem}
.side-dl .btn-main:hover{background:#DE7A2C}
.side-dl .btn-ghost{width:100%;background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.side-dl .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.1rem}
.side-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:.6rem;
  padding:.6rem .1rem;font-size:.925rem;color:#2B3B4B;border-bottom:1px dashed var(--line);
}
.side-list li:last-child a{border-bottom:none}
.side-list li a:hover{color:var(--brand);padding-left:.25rem}
.side-list li a i{font-size:.7rem;color:var(--brand);opacity:.7}
.side-note{font-size:.86rem;color:var(--muted);line-height:1.8;margin:0}
.spec-row{display:flex;align-items:center;justify-content:space-between;font-size:.88rem;padding:.5rem 0;border-bottom:1px dashed var(--line)}
.spec-row:last-child{border-bottom:none}
.spec-row span{color:var(--muted)}
.spec-row strong{color:var(--ink);font-weight:700}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:780px;margin:0 auto;text-align:center;padding:3rem 1.25rem;
  background:#FBFDFE;border:1px dashed #C9DCE5;border-radius:var(--r-lg);
}
.empty-state i{font-size:2rem;color:#9CB6C3;margin-bottom:1rem;display:block}
.empty-state h2{font-size:1.25rem;font-weight:700;margin-bottom:.6rem;color:var(--ink)}
.empty-state p{color:var(--muted);font-size:.95rem;margin-bottom:1.35rem}

/* ---------- 相关推荐 ---------- */
.reco-section{padding:0 0 var(--sp-6)}
.section-head{margin-bottom:2rem}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:.45rem;
  color:var(--brand);font-weight:700;font-size:.85rem;letter-spacing:.6px;margin-bottom:.6rem;
}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700}
.section-head p{color:var(--muted);margin-top:.6rem;font-size:.95rem}
.reco-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#B9D6E2}
.reco-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E4EDF2;border-radius:0}
.reco-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.reco-card:hover .reco-thumb img{transform:scale(1.04)}
.reco-body{padding:1.15rem 1.25rem 1.35rem;display:flex;flex-direction:column;gap:.55rem;flex:1}
.reco-body h3{font-size:1.0625rem;font-weight:700;line-height:1.55;color:var(--ink)}
.reco-body p{font-size:.9rem;color:var(--muted);line-height:1.7;margin:0}
.reco-link{margin-top:auto;font-size:.875rem;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:.4rem}
.reco-card:hover .reco-link{color:var(--brand-deep)}

/* ---------- 底部 CTA ---------- */
.dl-band{
  background:linear-gradient(135deg,#0F3546,#176B87 60%,#1F87A5);
  border-radius:var(--r-xl);
  padding:clamp(1.8rem,4vw,3rem);
  color:#fff;position:relative;overflow:hidden;
  box-shadow:0 22px 44px rgba(18,58,75,.24);
}
.dl-band::before,.dl-band::after{
  content:"";position:absolute;border-radius:50%;border:2px solid rgba(255,255,255,.13);pointer-events:none;
}
.dl-band::before{width:320px;height:320px;right:-110px;top:-140px}
.dl-band::after{width:190px;height:190px;right:40px;bottom:-120px}
.dl-band h2{font-size:clamp(1.4rem,2.4vw,1.95rem);font-weight:700;color:#fff;margin-bottom:.7rem}
.dl-band p{color:#CBE2EC;font-size:.98rem;max-width:560px;margin-bottom:1.5rem}
.dl-band .btn-main{background:var(--accent);box-shadow:0 12px 26px rgba(240,138,60,.3)}
.dl-band .btn-main:hover{background:#DE7A2C}
.dl-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.dl-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.dl-meta{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.25rem}
.dl-meta span{
  font-size:.8rem;color:#D5E8F0;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:.3rem .75rem;
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E2331;color:#B9CBD6;padding:4rem 0 1.5rem;margin-top:var(--sp-6)}
.footer-brand{display:flex;align-items:center;gap:.65rem;margin-bottom:1.1rem}
.footer-brand .brand-name{color:#fff;font-size:1.1rem}
.footer-brand .brand-sub{color:#8FA9B7}
.footer-desc{font-size:.92rem;line-height:1.85;color:#9FB6C3;margin:0;max-width:360px}
.footer-col strong{display:block;color:#fff;font-size:.95rem;margin-bottom:1rem;font-weight:700}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.55rem}
.footer-links a{color:#A9C0CC;font-size:.9rem}
.footer-links a:hover{color:#fff}
.footer-note{font-size:.88rem;line-height:1.85;color:#9FB6C3;margin:0}
.footer-bottom{
  margin-top:2.75rem;padding-top:1.25rem;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:.75rem;justify-content:space-between;
  font-size:.82rem;color:#8AA2B0;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .side-sticky{position:static}
}
@media (max-width:991.98px){
  .site-header .navbar{min-height:auto;padding:.7rem 0}
  .navbar-collapse{margin-top:.85rem;border-top:1px solid var(--line);padding-top:.85rem}
  .nav-links{align-items:stretch;gap:.15rem;margin:0 0 .75rem}
  .nav-links .nav-link{padding:.7rem .85rem;border-radius:10px}
  .nav-links .nav-link::after{display:none}
  .nav-actions{flex-direction:column;align-items:stretch;gap:.6rem;padding-bottom:.6rem}
  .nav-actions .btn-main,.nav-actions .btn-ghost{width:100%}
  .article-wrap{padding:3.25rem 0}
  .article-card{padding:1.6rem 1.25rem}
  .side-sticky{margin-top:1.5rem}
}
@media (max-width:767.98px){
  body{font-size:.98rem}
  .article-hero{padding:1.75rem 0 2rem}
  .crumb{font-size:.8rem}
  .crumb .current{white-space:normal}
  .prose{font-size:1rem;line-height:1.85}
  .prose h2{margin:1.6rem 0 .8rem}
  .footer-brand{flex-wrap:wrap}
  .footer-bottom{flex-direction:column;gap:.4rem}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:.95rem}
  .brand-name{font-size:1rem}
  .brand-sub{font-size:.66rem}
  .article-card{border-radius:var(--r-lg);padding:1.25rem 1rem}
  .reco-body{padding:1rem}
  .dl-band .d-flex{flex-direction:column;align-items:stretch !important}
  .dl-band .btn-main,.dl-band .btn-ghost{width:100%}
  .side-card{padding:1.2rem}
}

/* roulang page: category1 */
:root{
  --brand:#176B87;
  --brand-dark:#11556C;
  --brand-soft:#E8F3F7;
  --orange:#F08A3C;
  --orange-dark:#DC7526;
  --green:#2D9C74;
  --bg:#F6F8FB;
  --bg-alt:#EEF4F9;
  --card:#FFFFFF;
  --ink:#152434;
  --muted:#5B6B7C;
  --line:#DCE5EE;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(21,36,52,.08);
  --shadow-lg:0 16px 36px rgba(21,36,52,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",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);
  background:var(--bg);
  color:var(--ink);
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--ink);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(23,107,135,.35);outline-offset:2px;}

.container{max-width:1240px;padding-left:20px;padding-right:20px;}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:.95rem;font-weight:700;line-height:1;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(23,107,135,.24);}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(23,107,135,.3);}
.btn-main:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(23,107,135,.24);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#BFDCE6;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-soft{background:var(--brand-soft);color:var(--brand-dark);border-color:transparent;}
.btn-soft:hover{background:#D8EBF2;color:var(--brand-dark);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(240,138,60,.3);}
.btn-orange:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);}
.btn-lg-x{height:52px;padding:0 30px;font-size:1rem;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(21,36,52,.05);
}
.site-header .navbar{min-height:78px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:44px;height:44px;border-radius:14px;flex:0 0 44px;
  background:linear-gradient(135deg,#1B7E9C,#176B87);
  color:#fff;display:grid;place-items:center;font-size:18px;
  box-shadow:0 6px 16px rgba(23,107,135,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:1.06rem;font-weight:800;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:.72rem;color:var(--muted);letter-spacing:.4px;}
.nav-links{gap:4px;}
.nav-link{
  position:relative;
  font-size:.95rem;font-weight:600;color:#3C4E60;
  padding:.55rem .95rem !important;border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;height:2px;width:0;
  background:var(--brand);transform:translateX(-50%);border-radius:2px;
  transition:width .25s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:22px;}
.nav-link.active{color:var(--brand);background:var(--brand-soft);}
.nav-link.active::after{width:0;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.navbar-toggler{
  border:1px solid var(--line);border-radius:12px;padding:.35rem .6rem;
  color:var(--brand);font-size:18px;background:#fff;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(23,107,135,.2);}

/* ============ 分类页头图 ============ */
.page-banner{
  position:relative;
  padding:56px 0 60px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(9,40,54,.94) 0%,rgba(15,66,86,.88) 46%,rgba(23,107,135,.62) 100%);
}
.page-banner::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 0 0 60px rgba(255,255,255,.04),0 0 0 120px rgba(255,255,255,.03);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.8);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb i{font-size:.62rem;opacity:.7;}
.crumb .now{color:#fff;font-weight:600;}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);
  color:#fff;font-size:.8rem;font-weight:600;letter-spacing:.5px;margin-bottom:18px;
}
.banner-tag i{color:var(--orange);}
.page-banner h1{
  color:#fff;font-size:clamp(2rem,3.6vw,3rem);font-weight:800;
  letter-spacing:.5px;margin-bottom:18px;max-width:900px;
}
.banner-lead{
  color:rgba(255,255,255,.87);font-size:1.02rem;line-height:1.9;
  max-width:780px;margin-bottom:28px;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:10px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.9);font-size:.82rem;
}
.meta-chip i{color:#7ED0B4;}

/* ============ 主体两栏 ============ */
.cat-main{padding:56px 0 64px;}
.cat-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:40px;align-items:start;}

.cat-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow);
}
.side-title{
  font-size:.82rem;font-weight:700;color:var(--muted);letter-spacing:1.2px;
  text-transform:uppercase;margin-bottom:16px;display:flex;align-items:center;gap:8px;
}
.side-title i{color:var(--brand);}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  font-size:.92rem;font-weight:600;color:#3C4E60;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.side-nav a span.num{
  width:22px;height:22px;border-radius:6px;flex:0 0 22px;
  background:var(--bg-alt);color:var(--muted);
  display:grid;place-items:center;font-size:.72rem;font-weight:700;
}
.side-nav a:hover{background:var(--brand-soft);color:var(--brand-dark);border-left-color:var(--brand);padding-left:14px;}
.side-nav a:hover span.num{background:var(--brand);color:#fff;}
.side-cta{background:linear-gradient(160deg,#123E4E,#176B87);border:none;color:#fff;}
.side-cta .side-cta-title{font-size:1.05rem;font-weight:800;color:#fff;margin-bottom:8px;}
.side-cta p{color:rgba(255,255,255,.82);font-size:.86rem;line-height:1.75;margin-bottom:18px;}
.side-cta .btn-main{width:100%;background:var(--orange);box-shadow:0 8px 20px rgba(240,138,60,.32);}
.side-cta .btn-main:hover{background:var(--orange-dark);}
.side-cta .btn-ghost{width:100%;margin-top:10px;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);color:#fff;}
.side-cta .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;border-color:#fff;}

/* ============ 内容分节 ============ */
.cat-body{display:flex;flex-direction:column;gap:28px;}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px;box-shadow:var(--shadow);
  scroll-margin-top:100px;
}
.panel-head{margin-bottom:20px;}
.panel-head .eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.78rem;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 12px;margin-bottom:12px;
}
.panel-head h2{font-size:clamp(1.4rem,2.1vw,1.75rem);font-weight:700;margin-bottom:10px;}
.panel-head .sub{color:var(--muted);font-size:.94rem;margin:0;}
.panel p{color:#3E4E5E;font-size:1rem;line-height:1.85;}

.feature-split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:28px;align-items:center;margin-top:26px;
}
.feature-split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-alt);box-shadow:0 8px 22px rgba(21,36,52,.07);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.split-media:hover img{transform:scale(1.03);}
.split-text h3{font-size:1.16rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:9px;}
.split-text h3 i{color:var(--green);font-size:1rem;}
.split-text p{font-size:.95rem;color:#43556A;line-height:1.85;}

.tick-list{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.tick-list li{
  position:relative;padding-left:28px;font-size:.94rem;color:#3E4E5E;line-height:1.75;
}
.tick-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:.78rem;color:var(--green);
}
.tick-list li strong{color:var(--ink);font-weight:700;}

/* 系统要求卡 */
.req-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px;}
.req-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  background:#FCFDFE;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.req-card:hover{border-color:#A9D2E0;box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.req-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.req-icon{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;
  display:grid;place-items:center;font-size:17px;
  background:var(--brand-soft);color:var(--brand);
}
.req-icon.orange{background:#FDF0E4;color:var(--orange);}
.req-icon.green{background:#E5F5EE;color:var(--green);}
.req-icon.slate{background:var(--bg-alt);color:#4A6B80;}
.req-top h3{font-size:1.02rem;font-weight:700;margin:0;}
.req-top .ver{font-size:.76rem;color:var(--muted);font-weight:600;}
.req-list{display:flex;flex-direction:column;gap:8px;}
.req-list li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:.88rem;color:#43556A;line-height:1.65;
}
.req-list li span.k{color:var(--muted);flex:0 0 76px;font-weight:600;}
.req-list li span.v{color:var(--ink);font-weight:600;}

/* 步骤 */
.steps{display:flex;flex-direction:column;gap:2px;margin-top:24px;position:relative;}
.step{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;position:relative;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:27px;top:52px;bottom:0;width:2px;
  background:linear-gradient(180deg,#CDE4ED,transparent);
}
.step:last-child::before{display:none;}
.step-num{
  width:52px;height:52px;border-radius:16px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:1.05rem;font-weight:800;
  border:1px solid #CFE6EE;position:relative;z-index:2;background:#fff;
  box-shadow:0 6px 16px rgba(23,107,135,.1);
}
.step-body h3{font-size:1.02rem;font-weight:700;margin-bottom:6px;}
.step-body p{font-size:.92rem;color:#4A5B6B;margin:0;line-height:1.8;}

/* 提示条 */
.note-bar{
  display:flex;gap:14px;align-items:flex-start;
  background:#F3F9FB;border:1px solid #CFE6EE;border-left:4px solid var(--brand);
  border-radius:14px;padding:18px 20px;margin-top:24px;
}
.note-bar i{color:var(--brand);font-size:1.1rem;margin-top:3px;}
.note-bar p{font-size:.9rem;color:#3B5568;margin:0;line-height:1.8;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#A9D2E0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:none;text-align:left;cursor:pointer;
  padding:18px 22px;min-height:60px;
  font-size:1rem;font-weight:700;color:var(--ink);line-height:1.55;
}
.faq-q:hover{color:var(--brand);}
.faq-q .faq-ico{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:.78rem;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-q[aria-expanded="true"]{color:var(--brand);}
.faq-q[aria-expanded="true"] .faq-ico{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{
  padding:0 22px 20px;color:#43556A;font-size:.94rem;line-height:1.85;
  background:#FAFCFD;
}
.faq-a::before{content:"";display:block;height:1px;background:var(--line);margin-bottom:16px;}

/* 底部下载条 */
.download-bar{
  background:linear-gradient(120deg,#123E4E 0%,#176B87 62%,#1B7E9C 100%);
  border-radius:var(--radius-lg);padding:44px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  position:relative;overflow:hidden;scroll-margin-top:100px;
}
.download-bar::after{
  content:"";position:absolute;right:-80px;bottom:-110px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 48px rgba(255,255,255,.05);
  pointer-events:none;
}
.download-bar .dl-text{position:relative;z-index:2;}
.download-bar h2{color:#fff;font-size:clamp(1.4rem,2.2vw,1.8rem);margin-bottom:10px;}
.download-bar p{color:rgba(255,255,255,.84);font-size:.94rem;margin:0;max-width:620px;}
.download-bar .dl-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}
.download-bar .btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.download-bar .btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.dl-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.dl-tags span{
  font-size:.78rem;color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.26);border-radius:999px;padding:4px 12px;
  display:inline-flex;align-items:center;gap:6px;
}
.dl-tags span i{color:#8FD9C0;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0F2C3A;color:#C6D6DF;padding:64px 0 0;margin-top:20px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8AA6B5;}
.footer-desc{color:#9DB4C1;font-size:.9rem;line-height:1.85;max-width:330px;}
.footer-col strong{
  display:block;font-size:.86rem;font-weight:700;color:#fff;
  letter-spacing:.5px;margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#A7BECA;font-size:.9rem;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:#fff;padding-left:4px;}
.footer-note{color:#9DB4C1;font-size:.86rem;line-height:1.85;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:.82rem;color:#7E97A5;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .cat-layout{grid-template-columns:280px minmax(0,1fr);gap:30px;}
  .panel{padding:28px;}
}
@media (max-width:991.98px){
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:26px;}
  .cat-side{position:static;order:2;}
  .cat-body{order:1;}
  .nav-actions{margin-top:16px;flex-wrap:wrap;}
  .navbar-collapse{
    border-top:1px solid var(--line);margin-top:14px;padding-top:14px;
  }
  .nav-link{padding:.6rem .8rem !important;}
  .page-banner{padding:44px 0 46px;}
  .download-bar{grid-template-columns:minmax(0,1fr);padding:34px;}
  .req-grid{grid-template-columns:minmax(0,1fr);}
  .feature-split{grid-template-columns:minmax(0,1fr);gap:20px;}
  .feature-split.reverse .split-media{order:0;}
  .footer-desc{max-width:100%;}
}
@media (max-width:767.98px){
  .cat-main{padding:36px 0 46px;}
  .panel{padding:24px 20px;border-radius:20px;}
  .banner-actions .btn-main,.banner-actions .btn-ghost{width:100%;}
  .banner-lead{font-size:.96rem;}
  .brand-sub{display:none;}
  .brand-name{font-size:1rem;}
  .site-header .navbar{min-height:68px;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .step-num{width:44px;height:44px;border-radius:13px;font-size:.95rem;}
  .step::before{left:22px;top:44px;}
  .download-bar{padding:28px 22px;border-radius:20px;}
  .download-bar .dl-actions{width:100%;}
  .download-bar .dl-actions .btn-main,.download-bar .dl-actions .btn-ghost{width:100%;}
  .side-card{padding:20px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .page-banner h1{font-size:1.72rem;}
  .req-list li span.k{flex:0 0 66px;}
  .faq-q{font-size:.95rem;padding:16px 16px;}
  .faq-a{padding:0 16px 18px;font-size:.9rem;}
  .note-bar{padding:16px;}
}

/* roulang page: category2 */
:root{
  --brand:#176B87;
  --brand-dark:#12566C;
  --brand-deep:#0F3546;
  --brand-light:#E6F2F6;
  --brand-soft:#F0F7FA;
  --orange:#F08A3C;
  --orange-soft:#FDF1E7;
  --green:#2D9C74;
  --green-soft:#EAF6F1;
  --ink:#152434;
  --muted:#5B6B7C;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --line:#DCE5EE;
  --footer-bg:#0F2231;
  --footer-text:#B9C7D3;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(21,36,52,.08);
  --shadow-hover:0 16px 36px rgba(21,36,52,.12);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:1rem;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{max-width:var(--container);padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
.section{padding:5.5rem 0;}
.section-tight{padding:4rem 0;}
.section-head{max-width:760px;margin-bottom:2.75rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:.8125rem;font-weight:700;letter-spacing:.04em;
  margin-bottom:1rem;
}
.eyebrow i{font-size:.75rem;}
h1{font-size:clamp(2.25rem,4vw,3.75rem);font-weight:800;line-height:1.22;letter-spacing:-.01em;}
h2{font-size:clamp(1.75rem,2.6vw,2.5rem);font-weight:700;line-height:1.3;}
h3{font-size:1.375rem;font-weight:700;line-height:1.45;}
.section-head p{color:var(--muted);margin-top:.9rem;font-size:1.0625rem;line-height:1.85;}
.text-muted-2{color:var(--muted);}
.text-brand{color:var(--brand);}

/* 按钮 */
.btn-main,.btn-ghost,.btn-soft,.btn-solid-light,.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-weight:700;font-size:.9875rem;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-main{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px rgba(23,107,135,.18);}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(23,107,135,.24);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#B9D3DD;}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);}
.btn-soft{background:var(--brand-light);color:var(--brand);border-color:transparent;}
.btn-soft:hover{background:#D5E9EF;color:var(--brand-dark);}
.btn-solid-light{background:#fff;color:var(--brand-deep);border-color:#fff;box-shadow:0 10px 24px rgba(4,25,35,.22);}
.btn-solid-light:hover{background:#EAF3F6;color:var(--brand-deep);transform:translateY(-2px);}
.btn-ghost-light{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible,.btn-solid-light:focus-visible,.btn-ghost-light:focus-visible,
.nav-link:focus-visible,.footer-links a:focus-visible,.related-card:focus-visible{
  outline:3px solid rgba(23,107,135,.38);outline-offset:3px;
}
.btn-solid-light:focus-visible,.btn-ghost-light:focus-visible{outline-color:rgba(255,255,255,.7);}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;}
.btn-row.center{justify-content:center;}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:700;color:var(--brand);}
.link-arrow:hover{gap:11px;color:var(--brand-dark);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 18px rgba(21,36,52,.05);
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header .navbar{min-height:80px;}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;}
.brand-mark{
  width:46px;height:46px;border-radius:14px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--brand) 0%,#2196B4 100%);
  color:#fff;font-size:1.125rem;box-shadow:0 8px 18px rgba(23,107,135,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:1.0625rem;font-weight:800;color:var(--ink);letter-spacing:.01em;}
.brand-sub{font-size:.72rem;color:var(--muted);letter-spacing:.08em;margin-top:2px;}
.brand:hover .brand-name{color:var(--brand);}
.navbar-toggler{
  width:46px;height:46px;border:1px solid var(--line);border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:1.15rem;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:none;padding:0;
}
.navbar-toggler:focus{box-shadow:0 0 0 4px rgba(23,107,135,.18);}
.nav-links{gap:4px;align-items:center;}
.nav-links .nav-link{
  padding:10px 16px;border-radius:999px;
  color:var(--ink);font-weight:600;font-size:.95rem;
  position:relative;transition:color .2s ease,background-color .2s ease;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-links .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links .nav-link:hover::after{transform:scaleX(1);}
.nav-links .nav-link.active{color:var(--brand);background:var(--brand-light);}
.nav-links .nav-link.active::after{transform:scaleX(0);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-actions .btn-ghost,.nav-actions .btn-main{height:46px;min-height:46px;padding:0 20px;font-size:.9375rem;}

/* 分类页头图 */
.category-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(105deg,rgba(9,38,51,.95) 0%,rgba(12,57,72,.86) 48%,rgba(15,70,86,.62) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;
  padding:3.25rem 0 4rem;
  border-radius:0 0 32px 32px;
}
.category-hero::after{
  content:"";position:absolute;right:-120px;top:-90px;width:420px;height:420px;
  border:1px solid rgba(255,255,255,.16);border-radius:50%;pointer-events:none;
}
.category-hero::before{
  content:"";position:absolute;right:20px;bottom:-150px;width:320px;height:320px;
  border:1px dashed rgba(255,255,255,.14);border-radius:50%;pointer-events:none;
}
.category-hero .container{position:relative;z-index:2;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.875rem;color:rgba(255,255,255,.72);margin-bottom:1.5rem;}
.breadcrumb-nav a{color:rgba(255,255,255,.88);}
.breadcrumb-nav a:hover{color:#fff;text-decoration:underline;}
.breadcrumb-nav .sep{opacity:.55;}
.category-hero .hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);
  color:#E8F5F9;font-size:.8125rem;font-weight:700;letter-spacing:.05em;margin-bottom:1.1rem;
}
.category-hero h1{color:#fff;max-width:940px;}
.category-hero .hero-lead{
  max-width:760px;margin-top:1.15rem;font-size:1.0625rem;line-height:1.9;
  color:rgba(255,255,255,.86);
}
.category-hero .btn-row{margin-top:1.9rem;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;
  margin-top:2.5rem;padding-top:1.6rem;
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats .stat{padding-right:2.5rem;margin-right:2.5rem;border-right:1px solid rgba(255,255,255,.18);}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats .stat strong{display:block;font-size:1.5rem;font-weight:800;color:#fff;line-height:1.2;}
.hero-stats .stat span{font-size:.8125rem;color:rgba(255,255,255,.7);}

/* 自查步骤 */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:30px 26px 28px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  height:100%;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C3DCE5;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;
  background:var(--brand-light);color:var(--brand);
  font-weight:800;font-size:1.125rem;margin-bottom:1.1rem;
}
.step-card:nth-child(2) .step-num{background:var(--orange-soft);color:#C46A21;}
.step-card:nth-child(3) .step-num{background:var(--green-soft);color:var(--green);}
.step-card h3{font-size:1.1875rem;margin-bottom:.65rem;}
.step-card p{color:var(--muted);font-size:.95rem;line-height:1.8;}
.step-tip{display:inline-flex;align-items:center;gap:7px;margin-top:1rem;font-size:.8125rem;font-weight:700;color:var(--brand);}
.step-tip i{font-size:.75rem;}

/* 评价墙 */
.review-wall{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.review-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background-color .22s ease;
  height:100%;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C3DCE5;background:#fff;}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:.9rem;}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);font-weight:800;font-size:1rem;
  border:1px solid #CFE5EC;
}
.review-card:nth-child(2n) .avatar{background:var(--orange-soft);color:#C46A21;border-color:#F2D9C4;}
.review-card:nth-child(3n) .avatar{background:var(--green-soft);color:var(--green);border-color:#CBE7DC;}
.review-user{display:flex;flex-direction:column;line-height:1.35;}
.review-user strong{font-size:.95rem;font-weight:700;}
.review-user span{font-size:.75rem;color:var(--muted);}
.stars{margin-left:auto;color:var(--orange);font-size:.8125rem;letter-spacing:2px;white-space:nowrap;}
.review-text{font-size:.9875rem;line-height:1.8;color:var(--ink);}
.review-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:1rem;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;font-size:.75rem;font-weight:700;
  background:#fff;border:1px solid var(--line);color:var(--muted);
}
.tag.brand{background:var(--brand-light);border-color:#CFE5EC;color:var(--brand);}
.tag.green{background:var(--green-soft);border-color:#CBE7DC;color:#1F7F5D;}
.tag.orange{background:var(--orange-soft);border-color:#F2D9C4;color:#B9611F;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line)!important;border-radius:var(--radius)!important;
  background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:0 4px 14px rgba(21,36,52,.04);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  width:100%;padding:19px 22px;background:#fff;color:var(--ink);
  font-size:1.0625rem;font-weight:700;line-height:1.6;text-align:left;
  border:0;box-shadow:none!important;display:flex;align-items:center;gap:14px;
}
.accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-deep);}
.accordion-button:hover{background:var(--brand-soft);}
.accordion-button::after{
  content:"+";background-image:none!important;transform:none!important;
  width:32px;height:32px;flex:0 0 auto;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);
  font-size:1.35rem;font-weight:700;line-height:1;margin-left:auto;
  transition:background-color .2s ease,color .2s ease;
}
.accordion-button:not(.collapsed)::after{content:"−";background:var(--brand);color:#fff;}
.accordion-body{padding:4px 22px 22px;color:var(--muted);font-size:.9875rem;line-height:1.9;background:#fff;}
.accordion-button:not(.collapsed)+.accordion-collapse .accordion-body{background:var(--brand-soft);}
.accordion-body strong{color:var(--ink);}

/* 相关链接卡 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;color:inherit;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#B9D3DD;color:inherit;}
.related-thumb{position:relative;aspect-ratio:16/10;background:var(--brand-light);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.related-body h3{font-size:1.125rem;margin-bottom:.55rem;}
.related-body p{color:var(--muted);font-size:.925rem;line-height:1.75;margin-bottom:1.1rem;}
.related-body .link-arrow{margin-top:auto;font-size:.9rem;}

/* 反馈表单 */
.feedback-section{background:linear-gradient(180deg,#EFF5F9 0%,#F6F8FB 100%);border-top:1px solid var(--line);}
.feedback-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);
  box-shadow:var(--shadow);padding:38px;
}
.feedback-intro h2{margin-bottom:.8rem;}
.feedback-intro p{color:var(--muted);font-size:1rem;line-height:1.85;}
.feedback-list{margin-top:1.5rem;display:grid;gap:12px;}
.feedback-list li{display:flex;gap:10px;align-items:flex-start;font-size:.925rem;color:var(--muted);}
.feedback-list i{color:var(--green);margin-top:6px;font-size:.8125rem;}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:.875rem;font-weight:700;margin-bottom:7px;color:var(--ink);}
.form-control,.form-select{
  height:48px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#fff;color:var(--ink);padding:0 14px;font-size:.9375rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:#93A3B1;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,107,135,.14);outline:none;
}
.form-note{font-size:.8125rem;color:var(--muted);margin-top:.9rem;line-height:1.7;}
.form-note a{text-decoration:underline;}
.form-result{
  display:none;margin-top:14px;padding:12px 16px;border-radius:var(--radius-sm);
  background:var(--green-soft);border:1px solid #CBE7DC;color:#1F7F5D;font-size:.875rem;font-weight:700;
}
.form-result.show{display:block;}

/* 底部 CTA */
.cta-band{padding:0 0 5.5rem;}
.cta-inner{
  position:relative;overflow:hidden;
  background:linear-gradient(115deg,#0F3546 0%,#134B5E 55%,#176B87 100%);
  color:#fff;border-radius:var(--radius-xl);padding:3.5rem;
  box-shadow:0 24px 48px rgba(15,53,70,.22);
}
.cta-inner::after{
  content:"";position:absolute;right:-100px;bottom:-140px;width:340px;height:340px;
  border:1px solid rgba(255,255,255,.18);border-radius:50%;pointer-events:none;
}
.cta-inner h2{color:#fff;max-width:680px;}
.cta-inner p{color:rgba(255,255,255,.78);margin-top:.8rem;max-width:620px;font-size:1rem;}
.cta-inner .btn-row{margin-top:1.8rem;}
.cta-side{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-side .tag{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#E8F5F9;}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding:4.5rem 0 0;margin-top:0;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.5);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:1.1rem;}
.footer-desc{font-size:.925rem;line-height:1.85;color:var(--footer-text);max-width:340px;}
.footer-col strong{display:block;color:#fff;font-size:.875rem;font-weight:700;letter-spacing:.06em;margin-bottom:1rem;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:var(--footer-text);font-size:.925rem;}
.footer-links a:hover{color:#7FD3E8;}
.footer-note{font-size:.875rem;line-height:1.85;color:var(--footer-text);}
.footer-bottom{
  margin-top:3rem;padding:1.4rem 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:.8125rem;color:rgba(255,255,255,.56);
}
.site-footer .brand-mark{background:linear-gradient(150deg,#1E8CAB 0%,#2AA6C4 100%);box-shadow:none;}

/* 响应式 */
@media (max-width:1199.98px){
  .container{max-width:100%;}
  .hero-stats .stat{padding-right:1.8rem;margin-right:1.8rem;}
}
@media (max-width:991.98px){
  .site-header .navbar{min-height:72px;}
  .navbar-collapse{
    margin-top:14px;background:#fff;border:1px solid var(--line);
    border-radius:18px;padding:16px;box-shadow:var(--shadow);
  }
  .nav-links{gap:2px;align-items:stretch;width:100%;}
  .nav-links .nav-link{padding:12px 14px;border-radius:12px;}
  .nav-links .nav-link::after{display:none;}
  .nav-actions{flex-direction:column;gap:10px;margin-top:14px;width:100%;}
  .nav-actions .btn-ghost,.nav-actions .btn-main{width:100%;}
  .category-hero{padding:2.5rem 0 3.25rem;border-radius:0 0 24px 24px;}
  .section{padding:4rem 0;}
  .steps-grid{grid-template-columns:1fr;gap:16px;}
  .related-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .feedback-card{padding:28px;}
  .cta-inner{padding:2.5rem;}
}
@media (max-width:767.98px){
  body{font-size:.9875rem;}
  .category-hero h1{font-size:clamp(1.9rem,7vw,2.6rem);}
  .hero-stats{flex-direction:column;gap:14px;padding-top:1.3rem;}
  .hero-stats .stat{padding-right:0;margin-right:0;border-right:0;display:flex;align-items:baseline;gap:10px;}
  .hero-stats .stat strong{font-size:1.25rem;}
  .review-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .btn-row .btn-main,.btn-row .btn-ghost,.btn-row .btn-solid-light,.btn-row .btn-ghost-light{width:100%;}
  .cta-band{padding-bottom:4rem;}
  .cta-inner{padding:2rem;border-radius:20px;}
  .site-footer{padding-top:3.25rem;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-button{font-size:1rem;padding:16px 18px;}
  .accordion-body{padding:2px 18px 18px;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-mark{width:42px;height:42px;border-radius:12px;}
  .brand-name{font-size:1rem;}
  .brand-sub{font-size:.68rem;letter-spacing:.04em;}
  .category-hero{padding:2rem 0 2.75rem;}
  .hero-stats .stat strong{font-size:1.15rem;}
  .review-card,.step-card{padding:22px 20px;}
  .feedback-card{padding:22px 18px;}
  .cta-inner{padding:1.6rem;}
  .related-body{padding:18px;}
  .btn-main,.btn-ghost,.btn-soft,.btn-solid-light,.btn-ghost-light{padding:0 20px;}
}