/* roulang page: index */
:root{
  --c-brand-900:#1E1740;
  --c-brand-950:#14102A;
  --c-brand-700:#2A2159;
  --c-accent:#FF7A3D;
  --c-accent-hover:#F2651F;
  --c-teal:#2FD6C0;
  --c-teal-soft:#E4FBF8;
  --c-bg:#F7F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0EFF7;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05), 0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08), 0 18px 40px rgba(30,23,64,.12);
  --tr:220ms cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-900);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--c-teal)}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.35;letter-spacing:.01em;margin:0}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(47,214,192,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (min-width:1200px) and (max-width:1399px){.container{max-width:1140px}}
@media (min-width:992px) and (max-width:1199px){.container{max-width:960px}}

/* ---------- buttons ---------- */
.btn-accent,.btn-line,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:all var(--tr);min-height:46px;
}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 18px rgba(255,122,61,.28)}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(242,101,31,.32)}
.btn-line{background:transparent;color:var(--c-brand-900);border-color:rgba(30,23,64,.35)}
.btn-line:hover{background:rgba(30,23,64,.06);color:var(--c-brand-900);border-color:var(--c-brand-900)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-light{background:#fff;color:var(--c-brand-900)}
.btn-light:hover{background:var(--c-teal);color:var(--c-brand-950);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--c-accent)}
.link-arrow i{transition:transform var(--tr)}
.link-arrow:hover{color:var(--c-accent-hover)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:18px;font-weight:800;color:var(--c-brand-900);letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--c-teal)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;min-width:0}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-text-2);white-space:nowrap;
}
.nav-menu a:hover{color:var(--c-brand-900);background:var(--c-surface-2)}
.nav-menu a.active{color:var(--c-brand-900);font-weight:700}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-teal);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{position:relative;display:none}
.search-box input{
  width:220px;height:42px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface-2);
  padding:0 42px 0 18px;font-size:14px;color:var(--c-text);transition:all var(--tr);
}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box input:focus{outline:none;background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.22)}
.search-box button{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  border:0;background:none;color:var(--c-text-3);cursor:pointer;font-size:14px;
}
.search-box button:hover{color:var(--c-accent)}
.nav-login{font-size:15px;font-weight:600;color:var(--c-text-2);padding:8px 6px}
.nav-login:hover{color:var(--c-brand-900)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-brand-900);font-size:17px;cursor:pointer;align-items:center;justify-content:center;
}
@media (min-width:1200px){.search-box{display:block}}
@media (max-width:1199px){.nav-login{display:none}}
@media (min-width:992px){.nav-toggle{display:none}}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{height:56px;gap:12px}
  .brand-text{font-size:16px}
  .btn-accent.nav-start{padding:10px 16px;font-size:14px;min-height:40px}
}
.mobile-panel{background:#fff;border-bottom:1px solid var(--c-line)}
.mobile-panel .inner{padding:16px 0 22px}
.mobile-panel a{display:block;padding:12px 4px;font-size:16px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.mobile-panel a.active{color:var(--c-brand-900);font-weight:700;border-left:3px solid var(--c-teal);padding-left:12px}
.mobile-search{position:relative;margin:14px 0 6px}
.mobile-search input{width:100%;height:46px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface-2);padding:0 44px 0 18px;font-size:15px}
.mobile-search input:focus{outline:none;background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.22)}
.mobile-search i{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--c-text-3)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-hero);
  background:linear-gradient(135deg,#1E1740 0%,#2A2159 100%);
  margin-top:28px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.55;
}
.hero::after{content:"";position:absolute;inset:0;background:rgba(20,16,42,.62)}
.hero-inner{position:relative;z-index:2;padding:78px 56px;color:#fff}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(47,214,192,.16);color:var(--c-teal);
  border:1px solid rgba(47,214,192,.4);border-radius:var(--r-pill);
  font-size:13px;font-weight:600;padding:6px 14px;margin-bottom:22px;letter-spacing:.01em;
}
.hero h1{
  font-size:40px;font-weight:800;color:#fff;max-width:20em;margin-bottom:18px;
}
.hero-sub{font-size:18px;color:#C9C6E0;max-width:34em;margin-bottom:30px;line-height:1.75}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.trust-bar{
  display:grid;grid-template-columns:repeat(5,1fr);gap:12px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:24px;
}
.trust-item .t-num{font-family:var(--mono);font-size:20px;font-weight:700;color:#fff;display:block;letter-spacing:.02em}
.trust-item .t-label{font-size:13px;color:#C9C6E0;margin-top:2px;display:block}
@media (max-width:991px){
  .hero-inner{padding:52px 28px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .trust-bar{grid-template-columns:repeat(2,1fr);gap:18px}
}
@media (max-width:575px){
  .hero-inner{padding:40px 20px}
  .hero-ctas .btn-accent,.hero-ctas .btn-ghost{width:100%}
}

/* ---------- section base ---------- */
.section{padding:92px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-teal);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:28px;font-weight:700;color:var(--c-brand-900);margin-bottom:14px}
.section-head p{font-size:17px;color:var(--c-text-2);margin-bottom:0}
.section-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
@media (max-width:991px){
  .section{padding:64px 0}
  .section-head h2{font-size:22px}
  .section-head.row-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:767px){.section{padding:48px 0}}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain-card{
  border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;
  padding:24px 22px;transition:all var(--tr);
}
.pain-card:hover{border-color:rgba(30,23,64,.28);transform:translateY(-4px)}
.pain-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--c-teal);letter-spacing:.08em;display:block;margin-bottom:12px}
.pain-card:hover .pain-num{color:var(--c-accent)}
.pain-card h3{font-size:17px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.7}
@media (max-width:991px){.pain-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.pain-grid{grid-template-columns:1fr}}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:1.15fr .95fr;gap:24px;align-items:start}
.plan-main{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all var(--tr);
}
.plan-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.plan-main .pic{aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2)}
.plan-main .pic img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr)}
.plan-main:hover .pic img{transform:scale(1.04)}
.plan-main .body{padding:28px 28px 30px}
.plan-main h3{font-size:20px;font-weight:600;color:var(--c-brand-900);margin-bottom:12px}
.plan-main p{font-size:15px;color:var(--c-text-2);margin-bottom:18px}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--c-text);margin-bottom:10px;line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:5px;
  background:var(--c-teal-soft);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:13px;width:5px;height:9px;
  border-right:2px solid var(--c-teal);border-bottom:2px solid var(--c-teal);transform:rotate(42deg);
}
.plan-side{display:grid;gap:16px}
.plan-mini{
  display:flex;gap:16px;align-items:flex-start;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;transition:all var(--tr);
}
.plan-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,214,192,.6)}
.mini-icon{
  width:40px;height:40px;border-radius:12px;background:var(--c-surface-2);
  display:flex;align-items:center;justify-content:center;color:var(--c-brand-900);
  font-size:16px;flex-shrink:0;transition:all var(--tr);
}
.plan-mini:hover .mini-icon{background:var(--c-teal);color:var(--c-brand-950)}
.plan-mini h3{font-size:17px;font-weight:600;color:var(--c-text);margin-bottom:6px}
.plan-mini p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.7}
@media (max-width:991px){.plan-grid{grid-template-columns:1fr}}

/* ---------- stats ---------- */
.band{
  background:linear-gradient(135deg,#1E1740 0%,#2A2159 100%);
  border-radius:var(--r-hero);padding:56px 48px;color:#fff;position:relative;overflow:hidden;
}
.band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.28;
}
.band::after{content:"";position:absolute;inset:0;background:rgba(20,16,42,.6)}
.band-inner{position:relative;z-index:2}
.band h2{font-size:28px;font-weight:700;color:#fff;margin-bottom:12px}
.band .band-lead{color:#C9C6E0;font-size:16px;max-width:38em;margin-bottom:36px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:36px}
.stat-item .s-num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--c-accent);letter-spacing:.02em;display:block;line-height:1.2}
.stat-item .s-num small{font-size:15px;color:#C9C6E0;margin-left:4px;font-weight:500}
.stat-item .s-label{font-size:14px;color:#C9C6E0;margin-top:6px;display:block}
.bar{height:4px;border-radius:999px;background:rgba(255,255,255,.16);margin-top:14px;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:var(--c-teal)}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.case-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:24px;transition:all var(--tr);
}
.case-card:hover{background:rgba(255,255,255,.1)}
.case-card h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px}
.case-card p{font-size:14px;color:#C9C6E0;margin:0;line-height:1.75}
.case-card .tag{
  display:inline-block;font-size:12px;color:var(--c-teal);
  background:rgba(47,214,192,.14);border-radius:var(--r-pill);padding:3px 10px;margin-bottom:12px;
}
@media (max-width:991px){
  .band{padding:40px 24px}
  .band h2{font-size:22px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .case-grid{grid-template-columns:1fr}
}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;transition:all var(--tr);height:100%;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr)}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.post-card h3{
  font-size:18px;font-weight:600;color:var(--c-text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card h3 a{color:inherit}
.post-card h3 a:hover{color:var(--c-accent)}
.post-card .excerpt{
  font-size:14px;color:var(--c-text-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding-top:14px;
}
.badge-teal{
  display:inline-block;background:var(--c-teal-soft);color:var(--c-brand-900);
  border-radius:var(--r-pill);padding:3px 10px;font-size:12px;font-weight:600;
}
.post-time{font-family:var(--mono);font-size:13px;color:var(--c-text-3)}
.post-empty{
  grid-column:1/-1;min-height:220px;border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:40px 24px;text-align:center;
}
.post-empty i{font-size:44px;color:var(--c-text-3)}
.post-empty p{font-size:14px;color:var(--c-text-2);margin:0}
@media (max-width:991px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.post-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq .accordion-item{
  border:1px solid var(--c-line);border-radius:12px;background:#fff;
  margin-bottom:10px;overflow:hidden;
}
.faq .accordion-button{
  background:#fff;color:var(--c-text);font-size:17px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-radius:12px;
}
.faq .accordion-button:not(.collapsed){color:var(--c-brand-900);border-left:3px solid var(--c-teal)}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(47,214,192,.22);z-index:3}
.faq .accordion-button::after{
  content:"";width:12px;height:12px;background:none;border-right:2px solid var(--c-text-2);
  border-bottom:2px solid var(--c-text-2);transform:rotate(45deg);flex-shrink:0;
  transition:transform var(--tr);margin-left:16px;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--c-accent)}
.faq .accordion-body{font-size:15px;color:var(--c-text-2);padding:4px 20px 22px;line-height:1.8}

/* ---------- form ---------- */
.form-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-hero);
  padding:40px;box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.form-field{display:flex;flex-direction:column}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13px;color:var(--c-text-2);margin-bottom:8px;font-weight:600}
.form-field input,.form-field select,.form-field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface-2);padding:13px 16px;font-size:15px;color:var(--c-text);
  font-family:inherit;transition:all var(--tr);
}
.form-field textarea{min-height:110px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.22);
}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:8px}
.form-actions .btn-accent{flex:0 0 auto}
.form-hint{font-size:13px;color:var(--c-accent)}
.privacy-row{
  display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--c-text-2);
  margin-top:18px;line-height:1.7;
}
.privacy-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--c-teal)}
@media (max-width:767px){
  .form-wrap{padding:24px}
  .form-grid{grid-template-columns:1fr}
  .form-actions .btn-accent{width:100%}
}

/* ---------- modal ---------- */
.modal-content{border:0;border-radius:20px;padding:32px;box-shadow:var(--shadow-2)}
.modal-content h3{font-size:22px;font-weight:700;color:var(--c-brand-900);margin-bottom:8px}
.modal-content .modal-lead{font-size:14px;color:var(--c-text-2);margin-bottom:24px}
.modal-content .btn-close{position:absolute;top:18px;right:18px;opacity:.6}
.modal-content .btn-close:hover{opacity:1}
@media (max-width:575px){.modal-content{padding:22px;border-radius:16px}}

/* ---------- cta strip ---------- */
.cta-strip{
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:var(--r-hero);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-strip h2{font-size:22px;font-weight:700;color:var(--c-brand-900);margin-bottom:6px}
.cta-strip p{font-size:15px;color:var(--c-text-2);margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-950);color:#C9C6E0;padding:64px 0 0;margin-top:92px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand .brand-text{color:#fff;font-size:18px;display:block;margin-bottom:14px}
.footer-brand .brand-text em{color:var(--c-teal)}
.footer-brand p{font-size:14px;color:#C9C6E0;margin:0;line-height:1.75;max-width:24em}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#C9C6E0}
.footer-col a:hover{color:var(--c-teal)}
.footer-contact p{font-size:14px;color:#C9C6E0;margin:0 0 10px}
.qr-box{
  width:92px;height:92px;border-radius:12px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;
  color:#C9C6E0;font-size:12px;text-align:center;line-height:1.4;
}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;font-size:13px;color:#8C8FA3;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:64px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
}
@media print{
  .site-header,.site-footer,.form-wrap,.modal,.cta-strip{display:none !important}
}

/* roulang page: category1 */
:root{
  --c-brand-900:#1E1740;
  --c-brand-950:#14102A;
  --c-brand-700:#2A2159;
  --c-accent:#FF7A3D;
  --c-accent-hover:#F2651F;
  --c-teal:#2FD6C0;
  --c-teal-soft:#E4FBF7;
  --c-bg:#F7F7FB;
  --c-bg-soft:#F0EFF7;
  --c-surface:#FFFFFF;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05),0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08),0 18px 40px rgba(30,23,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-gap:92px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-900);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-teal)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.01em}
h1{font-size:40px;font-weight:800}
h2{font-size:28px;font-weight:700}
h3{font-size:20px;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(255,122,61,.45);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){.container{max-width:1280px}}
@media (min-width:992px) and (max-width:1199px){.container{max-width:960px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--c-brand-900);
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
}
.logo:hover{color:var(--c-brand-900)}
.logo-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:var(--c-brand-900);
  display:grid;place-items:center;
  flex-shrink:0;
}
.logo-mark svg{width:17px;height:17px;display:block}
.logo .em{color:var(--c-teal)}
.nav-menu{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1 1 auto;
}
@media (min-width:992px){.nav-menu{display:flex}}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  color:var(--c-text-2);
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:transparent;
  transition:background .2s var(--ease);
}
.nav-menu a:hover{color:var(--c-brand-900);background:var(--c-bg-soft)}
.nav-menu a.active{color:var(--c-brand-900)}
.nav-menu a.active::after{background:var(--c-teal)}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex-shrink:0;
}
.nav-search{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:var(--c-surface);
  width:220px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.18)}
.nav-search i{color:var(--c-text-3);font-size:13px}
.nav-search input{
  border:0;outline:none;background:transparent;
  width:100%;font-size:14px;color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3)}
@media (min-width:1200px){.nav-search{display:flex}}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  color:var(--c-brand-900);
  cursor:pointer;
}
@media (min-width:992px){.nav-toggle{display:none}}
.mobile-panel{
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:14px 0 20px;
}
@media (min-width:992px){.mobile-panel{display:none!important}}
.mobile-panel .container{display:flex;flex-direction:column;gap:6px}
.mobile-panel a{
  display:block;
  padding:12px 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  color:var(--c-text-2);
  min-height:44px;
}
.mobile-panel a:hover{background:var(--c-bg-soft);color:var(--c-brand-900)}
.mobile-panel a.active{background:var(--c-bg-soft);color:var(--c-brand-900);box-shadow:inset 3px 0 0 var(--c-teal)}
.mobile-search{
  display:flex;align-items:center;gap:8px;
  margin-top:6px;
  padding:0 14px;
  height:46px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:var(--c-bg);
}
.mobile-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}
.mobile-search i{color:var(--c-text-3)}

/* ---------- Buttons ---------- */
.btn-main,.btn-line,.btn-light,.btn-light-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-main{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,61,.24)}
.btn-main:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-2px)}
.btn-line{background:transparent;color:var(--c-brand-900);border-color:var(--c-brand-900)}
.btn-line:hover{background:var(--c-bg-soft);color:var(--c-brand-900);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-brand-900)}
.btn-light:hover{background:#F2F1FA;color:var(--c-brand-900);transform:translateY(-2px)}
.btn-light-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-light-line:hover{border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-brand-900);
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px}
.link-arrow:hover{color:var(--c-teal)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- Badges / breadcrumb ---------- */
.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--c-teal-soft);
  color:#12655A;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.01em;
}
.breadcrumb-bar{padding:18px 0 0;font-size:14px;color:var(--c-text-3)}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px}
.breadcrumb-bar .sep{color:#C6C8D6}
.breadcrumb-bar a{color:var(--c-text-3)}
.breadcrumb-bar a:hover{color:var(--c-teal)}
.breadcrumb-bar .current{color:var(--c-brand-900);font-weight:600}

/* ---------- Hero (light) ---------- */
.cat-hero{
  background:var(--c-bg-soft);
  border-bottom:1px solid var(--c-line);
  padding:26px 0 72px;
  position:relative;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(30,23,64,.06),rgba(47,214,192,.10));
  pointer-events:none;
}
.cat-hero .container{position:relative}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:center;
}
@media (min-width:992px){.hero-grid{grid-template-columns:1.15fr .85fr;gap:56px}}
.hero-copy h1{color:var(--c-brand-900);margin:18px 0 16px}
.hero-copy .lead{
  font-size:17px;
  color:var(--c-text-2);
  max-width:34em;
  margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{
  border-radius:var(--r-hero);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--c-surface);
  border:1px solid var(--c-line);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--c-text-3);
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
}

/* ---------- Sections ---------- */
.section{padding:var(--sec-gap) 0}
.section.tight{padding:64px 0}
.section.soft{background:var(--c-bg-soft)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{color:var(--c-brand-900);margin-bottom:14px}
.section-head p{font-size:16px;color:var(--c-text-2);margin:0}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Two column feature ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:center;
}
@media (min-width:992px){
  .feature-row{grid-template-columns:1fr 1fr;gap:56px}
  .feature-row.reverse .feature-media{order:2}
}
.feature-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--c-line);background:var(--c-surface)}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .22s var(--ease)}
.feature-media:hover img{transform:scale(1.04)}
.feature-body h3{margin-bottom:12px;color:var(--c-brand-900)}
.feature-body>p{color:var(--c-text-2);font-size:16px;max-width:34em}

.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.point-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px 18px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:12px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.point-list li:hover{border-color:#CFC9EC;transform:translateY(-2px);box-shadow:var(--shadow-1)}
.point-list .idx{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--c-teal);
  font-weight:700;
  line-height:1.6;
  flex-shrink:0;
}
.point-list li:hover .idx{color:var(--c-accent)}
.point-list strong{display:block;font-size:16px;font-weight:600;color:var(--c-brand-900);margin-bottom:2px}
.point-list span{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ---------- Method cards ---------- */
.method-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){.method-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1200px){.method-grid{grid-template-columns:repeat(4,1fr)}}
.method-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 22px;
  height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.method-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D8D3F0}
.method-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--c-bg-soft);
  color:var(--c-brand-900);
  display:grid;place-items:center;
  margin-bottom:16px;
  font-size:18px;
}
.method-card h3{font-size:18px;margin-bottom:10px;color:var(--c-brand-900)}
.method-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;margin:0}
.method-meta{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--c-line);
  font-size:13px;
  color:var(--c-text-3);
  font-family:var(--font-mono);
}

/* ---------- Steps ---------- */
.step-list{display:flex;flex-direction:column;gap:0;counter-reset:step}
.step-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:22px;
  padding:26px 0;
  border-bottom:1px solid var(--c-line);
}
.step-item:first-child{border-top:1px solid var(--c-line)}
.step-num{
  width:56px;height:56px;
  border-radius:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  display:grid;place-items:center;
  font-family:var(--font-mono);
  font-size:18px;
  font-weight:700;
  color:var(--c-brand-900);
}
.step-item:hover .step-num{border-color:var(--c-teal);color:var(--c-accent)}
.step-body h3{margin-bottom:8px;color:var(--c-brand-900)}
.step-body p{font-size:15.5px;color:var(--c-text-2);margin:0;max-width:60em}

/* ---------- Data band ---------- */
.data-band{
  background:linear-gradient(135deg,#1E1740 0%,#2A2159 100%);
  color:#fff;
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.data-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
  pointer-events:none;
}
.data-band .container{position:relative;z-index:1}
.data-band h2{color:#fff;margin-bottom:12px}
.data-band .sub{color:#C9C6E0;font-size:16px;max-width:44em;margin-bottom:40px}
.stat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px 24px;
}
@media (min-width:992px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:32px}}
.stat-item{border-left:2px solid rgba(255,255,255,.16);padding-left:18px}
.stat-item .num{
  font-family:var(--font-mono);
  font-size:34px;
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
  line-height:1.1;
}
.stat-item .num em{font-style:normal;color:var(--c-teal);font-size:20px;margin-left:2px}
.stat-item .lbl{font-size:14px;color:#C9C6E0;margin-top:8px;line-height:1.6}
.bar{
  height:4px;
  border-radius:99px;
  background:rgba(255,255,255,.14);
  margin-top:12px;
  overflow:hidden;
}
.bar span{display:block;height:100%;border-radius:99px;background:var(--c-teal)}

/* ---------- Compare table ---------- */
.table-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow-x:auto;
}
table.compare{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare caption{
  caption-side:top;
  text-align:left;
  padding:20px 24px 4px;
  font-size:13px;
  color:var(--c-text-3);
}
table.compare th,table.compare td{
  padding:16px 24px;
  text-align:left;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
table.compare thead th{
  background:var(--c-bg-soft);
  font-size:14px;
  font-weight:700;
  color:var(--c-brand-900);
  white-space:nowrap;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover{background:#FAFAFE}
table.compare td:first-child{font-weight:600;color:var(--c-brand-900)}
table.compare td{color:var(--c-text-2)}
.pill{
  display:inline-block;
  padding:2px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
}
.pill.ok{background:var(--c-teal-soft);color:#12655A}
.pill.warn{background:#FFF0E8;color:#B04A12}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:#D8D3F0}
.faq-item.is-open{border-left:3px solid var(--c-teal);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--c-brand-900);
  cursor:pointer;
  min-height:44px;
}
.faq-q .mark{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
}
.faq-q .mark::before,
.faq-q .mark::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-brand-900);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-q .mark::before{width:14px;height:2px}
.faq-q .mark::after{width:2px;height:14px}
.faq-item.is-open .faq-q .mark::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.is-open .faq-q .mark::before{background:var(--c-teal)}
.faq-a{
  display:none;
  padding:0 22px 20px;
  font-size:15.5px;
  color:var(--c-text-2);
  line-height:1.85;
}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA form ---------- */
.cta-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-hero);
  box-shadow:var(--shadow-1);
  padding:40px;
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
}
@media (min-width:992px){.cta-panel{grid-template-columns:.9fr 1.1fr;padding:48px;gap:56px}}
.cta-copy h2{color:var(--c-brand-900);margin-bottom:14px}
.cta-copy p{color:var(--c-text-2);font-size:16px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text-2)}
.cta-points i{color:var(--c-teal);margin-top:5px;font-size:13px}
.form-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:576px){.form-grid .col-2{grid-column:span 2}}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--c-text-3);font-weight:600;letter-spacing:.01em}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  font-size:15px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:var(--c-surface);
  color:var(--c-text);
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.75}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-teal);
  box-shadow:0 0 0 3px rgba(47,214,192,.18);
}
.field input::placeholder,.field textarea::placeholder{color:#B4B6C6}
.form-actions{grid-column:1/-1;display:flex;justify-content:flex-start}
.form-actions .btn-main{width:100%}
@media (min-width:576px){.form-actions .btn-main{width:auto;min-width:200px}}
.form-msg{grid-column:1/-1;font-size:13px;color:var(--c-accent);display:none}
.form-msg.show{display:block}
.privacy-row{
  grid-column:1/-1;
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:13.5px;
  color:var(--c-text-3);
  line-height:1.7;
}
.privacy-row input[type="checkbox"]{
  width:18px;height:18px;
  margin-top:3px;
  accent-color:var(--c-teal);
  flex-shrink:0;
}
.form-success{
  display:none;
  grid-column:1/-1;
  padding:28px;
  border-radius:var(--r-card);
  background:var(--c-teal-soft);
  border:1px solid #B6EFE6;
  color:#12655A;
  font-size:15px;
}
.form-success.show{display:block}
.form-success strong{display:block;font-size:17px;margin-bottom:6px;color:#0E4F46}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-brand-950);
  color:#fff;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:44px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand-text{
  display:inline-block;
  font-size:18px;
  font-weight:800;
  color:#fff;
  margin-bottom:12px;
  letter-spacing:.01em;
}
.footer-brand .brand-text em{font-style:normal;color:var(--c-teal)}
.footer-brand p{font-size:14px;color:#C9C6E0;line-height:1.8;max-width:28em;margin:0}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#C9C6E0}
.footer-col a:hover{color:var(--c-teal)}
.footer-contact p{font-size:14px;color:#C9C6E0;margin:0 0 8px}
.qr-box{
  margin-top:14px;
  width:104px;height:104px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.24);
  display:grid;place-items:center;
  text-align:center;
  font-size:12px;
  line-height:1.6;
  color:#9C98BC;
  padding:8px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:#9C98BC;
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .nav-menu a{padding:8px 10px;font-size:14.5px}
}
@media (max-width:991px){
  body{font-size:16px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  :root{--sec-gap:64px}
  .hero-copy .lead{font-size:16px}
  .cta-panel{padding:28px}
}
@media (max-width:767px){
  :root{--sec-gap:48px}
  .container{padding:0 16px}
  .header-inner{height:56px;gap:12px}
  .cat-hero{padding:18px 0 48px}
  .section.tight{padding:48px 0}
  .data-band{padding:48px 0}
  .step-item{grid-template-columns:44px 1fr;gap:16px;padding:20px 0}
  .step-num{width:44px;height:44px;border-radius:12px;font-size:16px}
  .footer-bottom{justify-content:flex-start}
  .btn-main,.btn-line{width:100%}
  .hero-cta .btn-main,.hero-cta .btn-line{width:100%}
}
@media (max-width:575px){
  .stat-item .num{font-size:26px}
  .cta-panel{padding:22px}
  table.compare th,table.compare td{padding:13px 16px}
}
@media print{
  .site-header,.site-footer,.cta-panel,.faq-q .mark{display:none!important}
  body{background:#fff}
}

/* roulang page: article */
:root{
  --c-brand-900:#1E1740;
  --c-brand-800:#14102A;
  --c-brand-700:#2A2159;
  --c-accent:#FF7A3D;
  --c-accent-hover:#F2651F;
  --c-teal:#2FD6C0;
  --c-bg:#F7F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0EFF7;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05), 0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08), 0 18px 40px rgba(30,23,64,.12);
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"PingFang SC",monospace;
  --bs-primary:#FF7A3D;
  --bs-link-color:#1E1740;
  --bs-link-hover-color:#F2651F;
  --bs-body-font-family:var(--font-sans);
  --bs-body-bg:#F7F7FB;
  --bs-body-color:#191A26;
  --bs-border-radius:10px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-900);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(255,122,61,.45);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-brand-900);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:2000;}
.skip-link:focus{left:0;color:#fff;}
.container{width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1140px;}}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
}
.brand-mark::before{
  content:"";position:absolute;inset:0;margin:auto;width:0;height:0;
  border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:11px solid var(--c-teal);
}
.brand-text{font-size:18px;font-weight:800;color:var(--c-brand-900);letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--c-teal);}
.nav-menu{display:flex;align-items:center;justify-content:center;gap:22px;flex:1 1 auto;min-width:0;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--c-text-2);padding:6px 2px;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:var(--c-teal);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
}
.nav-menu a:hover{color:var(--c-brand-900);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-brand-900);font-weight:600;}
.nav-menu a.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:14px;flex:none;}
.search-box{
  display:flex;align-items:center;gap:8px;width:230px;padding:9px 16px;
  background:var(--c-surface-2);border:1px solid transparent;border-radius:999px;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.18);}
.search-box i{font-size:13px;color:var(--c-text-3);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--c-text);}
.search-box input::placeholder{color:var(--c-text-3);}
.link-login{font-size:15px;color:var(--c-text-2);white-space:nowrap;}
.link-login:hover{color:var(--c-brand-900);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:10px;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand-900);border-radius:2px;}
.mobile-panel{
  border-top:1px solid var(--c-line);background:#fff;
  max-height:calc(100vh - 56px);overflow-y:auto;padding:18px 0 24px;
}
.mobile-panel .search-box{width:100%;margin-bottom:14px;}
.mobile-links{display:flex;flex-direction:column;}
.mobile-links a{
  padding:12px 4px;font-size:16px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);
  min-height:44px;display:flex;align-items:center;
}
.mobile-links a.active{color:var(--c-brand-900);font-weight:600;}

/* ---------- Buttons ---------- */
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  padding:12px 24px;border:0;border-radius:var(--r-btn);min-height:44px;cursor:pointer;
  transition:background .22s cubic-bezier(.2,.7,.3,1),transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,122,61,.28);}
.btn-accent:active{transform:translateY(0);}
.btn-accent:focus-visible{outline:3px solid rgba(255,122,61,.35);outline-offset:2px;}
.btn-accent--sm{padding:10px 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--c-brand-900);font-weight:600;font-size:15px;
  padding:11px 22px;border:1px solid var(--c-brand-900);border-radius:var(--r-btn);min-height:44px;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-brand-900);transform:translateY(-2px);}
.btn-ghost--light{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost--light:hover{background:rgba(255,255,255,.12);color:#fff;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-900);font-weight:600;font-size:15px;}
.text-link i{transition:transform .22s cubic-bezier(.2,.7,.3,1);}
.text-link:hover{color:var(--c-accent);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- Article top ---------- */
.article-top{
  position:relative;padding:34px 0 46px;color:#fff;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.article-top::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(30,23,64,.9),rgba(42,33,89,.82));
}
.article-top .container{position:relative;z-index:1;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:#C9C6E0;margin-bottom:18px;padding:0;list-style:none;}
.breadcrumb-nav a{color:#C9C6E0;}
.breadcrumb-nav a:hover{color:var(--c-teal);}
.breadcrumb-nav .sep{color:rgba(201,198,224,.6);}
.breadcrumb-nav .current{
  color:#fff;max-width:42ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;
}
.article-title{
  font-size:40px;font-weight:800;line-height:1.35;letter-spacing:.01em;
  color:#fff;margin:0 0 20px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:#C9C6E0;}
.meta-badge{
  display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;
  background:rgba(47,214,192,.16);color:#7FF0E0;font-size:13px;font-weight:600;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.meta-item i{font-size:13px;color:rgba(201,198,224,.85);}

/* ---------- Layout ---------- */
.article-section{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
@media (min-width:992px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start;}
}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-hero);
  box-shadow:var(--shadow-1);padding:40px 30px;
}
@media (min-width:768px){.article-card{padding:52px 56px;}}
.article-content{max-width:780px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--c-text);}
.article-content>*:first-child{margin-top:0;}
.article-content p{margin:0 0 20px;}
.article-content h2{
  font-size:25px;font-weight:700;line-height:1.4;margin:44px 0 16px;color:var(--c-brand-900);
  padding-left:14px;border-left:4px solid var(--c-accent);scroll-margin-top:96px;
}
.article-content h3{font-size:20px;font-weight:600;line-height:1.45;margin:30px 0 12px;color:var(--c-brand-900);scroll-margin-top:96px;}
.article-content h4{font-size:18px;font-weight:600;margin:24px 0 10px;}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:0;list-style:none;}
.article-content ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-teal);
}
.article-content ol{counter-reset:item;}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:item;}
.article-content ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--font-mono);font-size:13px;color:var(--c-teal);font-weight:700;
}
.article-content blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--c-teal);
  background:var(--c-surface-2);border-radius:0 12px 12px 0;color:var(--c-text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:24px auto;}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px;}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto;}
.article-content th,.article-content td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
.article-content th{background:var(--c-surface-2);font-weight:600;color:var(--c-brand-900);}
.article-content a{color:var(--c-brand-900);text-decoration:underline;text-decoration-color:var(--c-teal);text-underline-offset:3px;}
.article-content a:hover{color:var(--c-accent);text-decoration-color:var(--c-accent);}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}
.article-content code{font-family:var(--font-mono);font-size:14px;background:var(--c-surface-2);padding:2px 6px;border-radius:6px;}

/* ---------- Empty / foot ---------- */
.empty-state{
  max-width:640px;margin:0 auto;text-align:center;padding:56px 20px;
}
.empty-state i{font-size:48px;color:var(--c-text-3);margin-bottom:18px;display:block;}
.empty-state p{font-size:15px;color:var(--c-text-2);margin:0 0 22px;}
.article-foot{
  max-width:780px;margin:36px auto 0;padding-top:28px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-foot .note{font-size:13px;color:var(--c-text-3);margin:0;}

/* ---------- Side ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;}
@media (min-width:992px){
  .article-side{position:sticky;top:96px;}
}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.side-card h3{font-size:16px;font-weight:700;color:var(--c-brand-900);margin:0 0 14px;}
.toc-list{list-style:none;margin:0;padding:0;max-height:340px;overflow-y:auto;}
.toc-list li{margin-bottom:8px;}
.toc-list a{font-size:14px;color:var(--c-text-2);display:block;padding:2px 0;border-left:2px solid transparent;padding-left:10px;}
.toc-list a:hover{color:var(--c-brand-900);border-left-color:var(--c-teal);}
.toc-list li.toc-sub a{padding-left:22px;font-size:13.5px;color:var(--c-text-3);}
.is-hidden{display:none !important;}
.side-links{list-style:none;margin:0;padding:0;}
.side-links li{margin-bottom:10px;}
.side-links a{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--c-text-2);min-height:32px;}
.side-links a i{font-size:12px;color:var(--c-teal);}
.side-links a:hover{color:var(--c-brand-900);}

/* ---------- Related ---------- */
.rel-block{margin-top:56px;}
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:24px;}
.block-head h2{font-size:26px;font-weight:700;color:var(--c-brand-900);margin:0;line-height:1.35;}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.rel-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD9EC;}
.rel-card .thumb{overflow:hidden;aspect-ratio:16/10;background:var(--c-surface-2);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s cubic-bezier(.2,.7,.3,1);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card h3{font-size:18px;font-weight:600;color:var(--c-brand-900);margin:0;line-height:1.45;}
.rel-card p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.7;}
.rel-card .meta{font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:10px;font-variant-numeric:tabular-nums;}
.tag{
  display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;
  background:rgba(47,214,192,.14);color:#147F72;font-size:12.5px;font-weight:600;
}

/* ---------- CTA / Form ---------- */
.cta-section{padding:0 0 72px;}
.cta-card{
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  border-radius:var(--r-hero);padding:40px 30px;color:#fff;
  display:grid;grid-template-columns:1fr;gap:34px;
}
@media (min-width:992px){.cta-card{grid-template-columns:1fr 1fr;padding:52px;gap:48px;}}
.cta-copy .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.08em;color:var(--c-teal);
  border:1px solid rgba(47,214,192,.4);border-radius:999px;padding:3px 12px;margin-bottom:16px;
}
.cta-copy h2{font-size:28px;font-weight:700;line-height:1.35;margin:0 0 14px;color:#fff;}
.cta-copy p{font-size:15.5px;color:#C9C6E0;margin:0 0 20px;max-width:34em;}
.cta-points{list-style:none;margin:0;padding:0;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#C9C6E0;margin-bottom:10px;}
.cta-points i{color:var(--c-teal);font-size:13px;margin-top:6px;}
.form-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:26px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:#C9C6E0;margin-bottom:6px;font-weight:500;}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.96);
  color:var(--c-text);outline:none;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.25);
}
.form-actions{margin-top:20px;}
.form-actions .btn-accent{width:100%;}
.privacy-note{
  display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--c-text-3);
  max-width:820px;margin:18px auto 0;line-height:1.7;
}
.privacy-note input{margin-top:5px;width:16px;height:16px;accent-color:var(--c-accent);flex:none;}
.form-success{font-size:15px;color:#fff;background:rgba(47,214,192,.14);border:1px solid rgba(47,214,192,.4);border-radius:12px;padding:20px;}
.form-success i{color:var(--c-teal);margin-right:8px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-brand-800);color:#C9C6E0;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;}}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:800;display:inline-block;margin-bottom:14px;}
.footer-brand .brand-text em{font-style:normal;color:var(--c-teal);}
.footer-brand p{font-size:14px;line-height:1.8;color:#C9C6E0;margin:0;max-width:26em;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin:0 0 16px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#C9C6E0;}
.footer-col a:hover{color:var(--c-teal);}
.footer-contact p{font-size:14px;color:#C9C6E0;margin:0 0 8px;}
.qr-box{
  margin-top:14px;width:104px;height:104px;border:1px dashed rgba(255,255,255,.3);border-radius:12px;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#8F8BB0;line-height:1.6;padding:8px;
}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8F8BB0;
}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .search-box{width:200px;}
  .nav-menu{gap:16px;}
  .brand-text{font-size:17px;}
}
@media (max-width:991.98px){
  .nav-menu{display:none;}
  .search-box{display:none;}
  .link-login{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:56px;gap:12px;}
  .brand{margin-right:auto;}
  .brand-text{font-size:16px;}
  .article-title{font-size:28px;}
  .article-top{padding:26px 0 34px;}
  .article-section{padding:36px 0 56px;}
  .article-card{padding:32px 24px;}
  .rel-block{margin-top:40px;}
  .cta-section{padding:0 0 56px;}
  .article-content{font-size:16px;line-height:1.8;}
  .article-content h2{font-size:22px;margin-top:36px;}
  .article-content h3{font-size:18px;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .article-meta{gap:10px;font-size:13px;}
  .article-title{font-size:26px;}
  .btn-accent,.btn-ghost{width:100%;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{gap:28px;}
}
@media print{
  .site-header,.cta-section,.article-side,.site-footer,.mobile-panel,.skip-link{display:none !important;}
  body{background:#fff;font-size:12pt;}
  .article-card{border:0;box-shadow:none;padding:0;}
}

/* roulang page: category2 */
:root{
  --c-brand-900:#1E1740;
  --c-brand-950:#14102A;
  --c-brand-700:#2A2159;
  --c-accent:#FF7A3D;
  --c-accent-hover:#F2651F;
  --c-teal:#2FD6C0;
  --c-teal-soft:rgba(47,214,192,.12);
  --c-bg:#F7F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0EFF7;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05),0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08),0 18px 40px rgba(30,23,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-y:92px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand-900);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--c-teal);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(47,214,192,.35);
  border-radius:var(--r-btn);
}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.01em;color:var(--c-text);}
h1{font-size:40px;font-weight:800;}
h2{font-size:28px;font-weight:700;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 18px;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(255,122,61,.25);}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(150%) blur(8px);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);background:rgba(255,255,255,.92);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  color:var(--c-teal);font-size:16px;
}
.brand-text{font-size:18px;font-weight:800;color:var(--c-brand-900);letter-spacing:.01em;}
.brand-text em{font-style:normal;color:var(--c-teal);}
.nav-menu{display:flex;align-items:center;gap:22px;margin-left:8px;}
.nav-menu a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--c-teal);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-menu a:hover{color:var(--c-brand-900);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-brand-900);font-weight:700;}
.nav-menu a.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--c-line);border-radius:999px;
  padding:7px 14px;background:var(--c-surface-2);
  width:220px;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{border-color:var(--c-teal);background:#fff;}
.search-box i{color:var(--c-text-3);font-size:13px;}
.search-box input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);width:100%;
}
.search-box input::placeholder{color:var(--c-text-3);}
.btn-ghost{
  font-size:14px;font-weight:600;color:var(--c-brand-900);
  padding:9px 14px;border-radius:var(--r-btn);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-brand-900);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-main:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,101,31,.28);}
.btn-main:active{transform:translateY(0);}
.btn-main.sm{padding:9px 18px;font-size:14px;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--c-brand-900);font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:var(--r-btn);border:1px solid var(--c-brand-900);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-line:hover{background:var(--c-surface-2);color:var(--c-brand-900);transform:translateY(-2px);}
.btn-onDark{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;color:var(--c-brand-900);font-weight:600;font-size:15px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid #fff;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-onDark:hover{color:var(--c-brand-900);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.28);}
.btn-onDark-line{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.6);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-onDark-line:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.menu-toggle{
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-brand-900);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.menu-toggle:hover{border-color:var(--c-teal);color:var(--c-brand-900);}
.offcanvas-brand{font-size:17px;font-weight:800;color:var(--c-brand-900);}
.offcanvas-brand em{font-style:normal;color:var(--c-teal);}
.mobile-nav{display:flex;flex-direction:column;gap:4px;margin-top:18px;}
.mobile-nav a{
  padding:12px 4px;font-size:16px;font-weight:500;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-nav a.active{color:var(--c-brand-900);font-weight:700;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--c-surface-2);}
.section-dark{
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  color:#fff;
}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head p{color:var(--c-text-2);margin-bottom:0;}
.section-head.on-dark p{color:#C9C6E0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-accent);text-transform:none;margin-bottom:12px;
}
.tag{
  display:inline-flex;align-items:center;
  background:var(--c-teal-soft);color:var(--c-brand-900);
  border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;
}

/* ---------- Hero ---------- */
.cat-hero{padding:36px 0 0;}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--c-text-3);margin-bottom:20px;
}
.breadcrumb-nav a{color:var(--c-text-3);}
.breadcrumb-nav a:hover{color:var(--c-teal);}
.breadcrumb-nav .sep{color:var(--c-text-3);}
.breadcrumb-nav .current{color:var(--c-brand-900);font-weight:600;}
.hero-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-hero);
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  min-height:430px;display:flex;align-items:center;
}
.hero-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.6;
}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(20,16,42,.88),rgba(30,23,64,.62));
}
.hero-panel-inner{position:relative;z-index:2;padding:60px 56px;max-width:760px;color:#fff;}
.hero-panel-inner h1{color:#fff;margin:16px 0 18px;}
.hero-lead{color:#C9C6E0;font-size:17px;max-width:34em;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  margin-top:22px;
}
.hero-facts li{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;padding:16px 18px;
}
.hero-facts strong{display:block;font-size:15px;font-weight:700;color:var(--c-brand-900);}
.hero-facts span{font-size:13px;color:var(--c-text-2);}

/* ---------- 双列卡 ---------- */
.grid-two{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.ui-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  height:100%;display:flex;flex-direction:column;
}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DAD9EA;}
.ui-card .thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);
}
.ui-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.ui-card:hover .thumb img{transform:scale(1.04);}
.ui-card .card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1;}
.ui-card h3{margin:0;}
.ui-card p{color:var(--c-text-2);font-size:15px;margin:0;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-accent);margin-top:auto;
}
.text-link i{transition:transform .2s var(--ease);font-size:12px;}
.text-link:hover{color:var(--c-accent-hover);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 图文要点块 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--shadow-1);
}
.check-list{margin-top:10px;display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;padding:14px 18px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.check-list li:hover{border-color:#CFD0E4;transform:translateY(-2px);}
.check-list i{
  flex:0 0 22px;height:22px;border-radius:999px;margin-top:4px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-teal-soft);color:#17A895;font-size:11px;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--c-text);}
.check-list span{font-size:14px;color:var(--c-text-2);line-height:1.7;}

/* ---------- 数据条 ---------- */
.stats-band{
  background:linear-gradient(135deg,var(--c-brand-900),var(--c-brand-700));
  color:#fff;border-radius:var(--r-hero);
  padding:44px 40px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{border-left:1px solid rgba(255,255,255,.14);padding-left:20px;}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:38px;font-weight:700;color:#fff;line-height:1.2;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--c-teal);margin-left:6px;letter-spacing:0;}
.stat-label{font-size:14px;color:#C9C6E0;margin-top:6px;}
.stat-bar{height:3px;border-radius:999px;background:rgba(255,255,255,.16);margin-top:14px;overflow:hidden;}
.stat-bar i{display:block;height:100%;background:var(--c-teal);border-radius:999px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-list .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:12px;overflow:hidden;
}
.faq-list .accordion-button{
  background:#fff;color:var(--c-text);font-weight:600;font-size:16px;
  padding:18px 22px;box-shadow:none;border-left:3px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-list .accordion-button:not(.collapsed){
  color:var(--c-brand-900);background:#fff;
  border-left:3px solid var(--c-teal);
  box-shadow:none;
}
.faq-list .accordion-button:focus{box-shadow:none;}
.faq-list .accordion-button::after{
  content:"";width:11px;height:11px;
  background-image:none;
  border-right:2px solid var(--c-accent);
  border-bottom:2px solid var(--c-accent);
  transform:rotate(45deg);transition:transform .22s var(--ease);
  margin-left:auto;flex:0 0 auto;
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.faq-list .accordion-body{
  padding:0 22px 20px;font-size:15.5px;color:var(--c-text-2);line-height:1.85;
}

/* ---------- 表单 ---------- */
.inquiry-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:36px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--c-text-2);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-input);
  padding:11px 14px;font-size:15px;color:var(--c-text);background:#fff;
  font-family:inherit;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.22);
}
.privacy-row{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;color:var(--c-text-3);margin-top:18px;
}
.privacy-row input{margin-top:4px;accent-color:var(--c-teal);width:16px;height:16px;}
.form-actions{display:flex;justify-content:flex-end;margin-top:22px;}
.form-success{
  display:none;padding:28px 4px;text-align:center;
}
.form-success i{font-size:34px;color:var(--c-teal);margin-bottom:12px;display:block;}
.form-success strong{display:block;font-size:18px;color:var(--c-brand-900);margin-bottom:6px;}
.form-success span{font-size:14px;color:var(--c-text-2);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-hero);
  padding:44px 40px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--c-text-2);margin:0;max-width:34em;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-brand-950);color:#C9C6E0;
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand .brand-text{color:#fff;font-size:18px;display:block;margin-bottom:12px;}
.footer-brand .brand-text em{color:var(--c-teal);font-style:normal;}
.footer-brand p{font-size:14px;color:#C9C6E0;line-height:1.8;margin:0;}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#C9C6E0;}
.footer-col a:hover{color:var(--c-teal);}
.footer-contact p{font-size:14px;margin:0 0 8px;}
.qr-box{
  margin-top:14px;width:104px;height:104px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#9E9BB8;line-height:1.6;padding:10px;
}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#9E9BB8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .site-container{max-width:1140px;}
}
@media (max-width:1199px){
  .site-container{max-width:960px;}
  .search-box{width:190px;}
  h1{font-size:34px;}
}
@media (max-width:991px){
  :root{--section-y:64px;}
  .site-container{max-width:100%;}
  .hero-panel{min-height:360px;}
  .hero-panel-inner{padding:40px 32px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .hero-facts{grid-template-columns:repeat(2,1fr);}
  .grid-two{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:28px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .stat-item{border-left:0;padding-left:0;}
  .stat-num{font-size:30px;}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .site-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;line-height:1.8;}
  h1{font-size:28px;}
  .hero-panel{border-radius:16px;min-height:auto;}
  .hero-panel-inner{padding:32px 22px;}
  .hero-actions .btn-main,.hero-actions .btn-onDark,.hero-actions .btn-onDark-line{width:100%;}
  .form-grid{grid-template-columns:1fr;}
  .inquiry-wrap{padding:24px 20px;}
  .form-actions .btn-main{width:100%;}
  .stats-band{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .ui-card .card-body{padding:18px 18px 22px;}
}
@media print{
  .site-header,.site-footer,.inquiry-wrap,.cta-band,.menu-toggle{display:none !important;}
  body{background:#fff;}
}

/* roulang page: category3 */
:root{
  --c-brand-900:#1E1740;
  --c-brand-950:#14102A;
  --c-accent:#FF7A3D;
  --c-accent-dark:#F2651F;
  --c-teal:#2FD6C0;
  --c-bg:#F7F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0EFF7;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05),0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08),0 18px 40px rgba(30,23,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand-900);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-teal);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{line-height:1.35;letter-spacing:.01em;margin:0;color:var(--c-text);}
h1{font-size:40px;font-weight:800;}
h2{font-size:28px;font-weight:700;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 18px;color:var(--c-text-2);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1140px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){ .container{max-width:1280px;} }
:focus-visible{outline:3px solid rgba(47,214,192,.45);outline-offset:2px;border-radius:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--c-surface-2);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:16px;}
.section-head p{font-size:17px;color:var(--c-text-2);}
.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-teal);
  background:rgba(47,214,192,.12);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:16px;
  font-weight:600;
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:600;font-size:16px;padding:12px 24px;border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);min-height:44px;}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,122,61,.28);}
.btn-accent:focus-visible{outline:3px solid rgba(255,122,61,.35);outline-offset:2px;}
.btn-outline-brand{background:transparent;color:var(--c-brand-900);border-color:var(--c-brand-900);}
.btn-outline-brand:hover{background:var(--c-surface-2);color:var(--c-brand-900);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--c-text-2);border-color:transparent;padding:8px 14px;}
.btn-ghost:hover{color:var(--c-brand-900);background:var(--c-surface-2);}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-brand-900);font-size:15px;}
.link-more::after{content:"›";font-size:18px;line-height:1;transition:transform .2s var(--ease);}
.link-more:hover::after{transform:translateX(4px);}
.link-more:hover{color:var(--c-teal);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-brand-900),#2A2159);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;display:block;}
.brand-text{font-size:18px;font-weight:800;color:var(--c-brand-900);letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--c-teal);}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
.nav-menu a{
  position:relative;
  display:block;
  padding:9px 12px;
  font-size:14.5px;
  font-weight:500;
  color:var(--c-text-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-menu a:hover{color:var(--c-brand-900);background:var(--c-surface-2);}
.nav-menu a.active{color:var(--c-brand-900);font-weight:700;}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  border-radius:2px;background:var(--c-teal);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.search-box{position:relative;display:none;}
.search-box input{
  width:220px;height:40px;border-radius:999px;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  padding:0 40px 0 16px;
  font-size:14px;color:var(--c-text);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--c-text-3);}
.search-box input:focus{outline:none;background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.18);}
.search-box button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;border:none;background:transparent;
  display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:999px;color:var(--c-text-3);
}
.search-box button:hover{color:var(--c-brand-900);background:var(--c-surface-2);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand-900);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{
  display:none;border-top:1px solid var(--c-line);background:#fff;
  padding:16px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-panel .mobile-search{display:flex;gap:8px;margin-bottom:14px;}
.mobile-panel .mobile-search input{
  flex:1;height:44px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-surface-2);padding:0 16px;font-size:15px;
}
.mobile-panel .mobile-search input:focus{outline:none;border-color:var(--c-teal);background:#fff;}
.mobile-panel nav{display:flex;flex-direction:column;}
.mobile-panel nav a{
  padding:12px 4px;font-size:16px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);
}
.mobile-panel nav a.active{color:var(--c-brand-900);font-weight:700;}
@media (min-width:992px){ .mobile-panel{display:none !important;} }
@media (min-width:1200px){ .search-box{display:block;} }
@media (max-width:1199px){
  .nav-menu a{padding:9px 8px;font-size:14px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:56px;gap:12px;}
  .nav-actions .btn-ghost{display:none;}
  .nav-actions .btn-accent{padding:10px 18px;font-size:15px;}
}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  background:var(--c-surface-2);
  border-bottom:1px solid var(--c-line);
  padding:44px 0 64px;
}
.breadcrumb-nav{font-size:14px;color:var(--c-text-3);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb-nav a{color:var(--c-text-3);}
.breadcrumb-nav a:hover{color:var(--c-teal);}
.breadcrumb-nav .sep{color:var(--c-text-3);}
.breadcrumb-nav .current{color:var(--c-brand-900);font-weight:600;}
.cat-hero h1{max-width:820px;margin-bottom:18px;}
.cat-hero .lead{font-size:18px;line-height:1.8;color:var(--c-text-2);max-width:720px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px;}
.hero-facts{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
}
.hero-facts div{padding:16px 20px;border-right:1px solid var(--c-line);}
.hero-facts div:last-child{border-right:none;}
.hero-facts .k{display:block;font-family:var(--mono);font-size:12px;color:var(--c-text-3);letter-spacing:.06em;margin-bottom:4px;}
.hero-facts .v{display:block;font-size:15px;font-weight:600;color:var(--c-brand-900);}
@media (max-width:991px){
  .cat-hero{padding:32px 0 48px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .lead{font-size:16px;}
  .hero-facts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-facts div:nth-child(2){border-right:none;}
  .hero-facts div:nth-child(1),.hero-facts div:nth-child(2){border-bottom:1px solid var(--c-line);}
}
@media (max-width:575px){
  .hero-facts{grid-template-columns:1fr;}
  .hero-facts div{border-right:none;border-bottom:1px solid var(--c-line);}
  .hero-facts div:last-child{border-bottom:none;}
  .hero-actions .btn{width:100%;}
}

/* ---------- 频道说明（左右两列） ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.split .txt h2{margin-bottom:18px;}
.split .txt p{margin-bottom:20px;}
.media-frame{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--shadow-1);background:#fff;
}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:32px;}
}

/* ---------- 清单列表 ---------- */
.tick-list{display:grid;gap:12px;}
.tick-list li{position:relative;padding-left:28px;font-size:16px;color:var(--c-text-2);line-height:1.7;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--c-teal);border-bottom:2px solid var(--c-teal);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- 步骤列表（本页主版式） ---------- */
.step-list{list-style:none;margin:0;padding:0;}
.step-item{position:relative;display:grid;grid-template-columns:72px minmax(0,1fr);gap:28px;padding-bottom:40px;}
.step-item::before{content:"";position:absolute;left:35px;top:76px;bottom:8px;width:1px;background:var(--c-line);}
.step-item:last-child{padding-bottom:0;}
.step-item:last-child::before{display:none;}
.step-num{
  width:72px;height:72px;border-radius:20px;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:20px;font-weight:800;color:var(--c-brand-900);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.step-item:hover .step-num{border-color:var(--c-teal);color:var(--c-accent);transform:translateY(-2px);}
.step-body{padding-top:6px;}
.step-body h3{margin-bottom:12px;}
.step-body p{margin-bottom:16px;max-width:34em;}
@media (max-width:767px){
  .step-item{grid-template-columns:52px minmax(0,1fr);gap:18px;padding-bottom:32px;}
  .step-num{width:52px;height:52px;border-radius:14px;font-size:16px;}
  .step-item::before{left:25px;top:56px;}
}

/* ---------- 场景卡片 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D9D7EC;}
.scene-card .tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--c-brand-900);
  background:rgba(47,214,192,.14);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{font-size:15px;line-height:1.75;}
@media (max-width:991px){ .scene-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:767px){ .scene-grid{grid-template-columns:1fr;} }

/* ---------- 数据条 ---------- */
.data-band{
  background:linear-gradient(135deg,var(--c-brand-900),#2A2159);
  border-radius:20px;
  padding:56px 40px;
  color:#fff;
}
.data-band h2{color:#fff;margin-bottom:14px;}
.data-band .desc{color:#C9C6E0;max-width:640px;font-size:16px;margin-bottom:40px;}
.data-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;}
.data-item .num{
  font-family:var(--mono);font-size:36px;font-weight:800;line-height:1.1;
  color:var(--c-accent);letter-spacing:-.01em;
}
.data-item .unit{font-size:15px;font-weight:600;color:#fff;margin-left:4px;}
.data-item .label{display:block;margin-top:10px;font-size:14px;color:#C9C6E0;line-height:1.7;}
.data-item .bar{height:3px;border-radius:999px;background:rgba(255,255,255,.14);margin-top:14px;overflow:hidden;}
.data-item .bar i{display:block;height:100%;border-radius:999px;background:var(--c-teal);}
@media (max-width:991px){
  .data-band{padding:40px 24px;border-radius:16px;}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:575px){
  .data-grid{grid-template-columns:1fr;}
  .data-item .num{font-size:30px;}
}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  border:1px solid var(--c-line);border-radius:12px;background:#fff;
  margin-bottom:10px;overflow:hidden;
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--c-teal);}
.faq-acc .accordion-button{
  background:#fff;color:var(--c-text);font-size:16px;font-weight:600;
  padding:18px 52px 18px 20px;box-shadow:none;border-radius:0;position:relative;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-brand-900);background:#fff;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::before{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:2px;border-radius:2px;
  background:var(--c-text-2);transform:translateY(-50%);
}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:28px;top:50%;width:2px;height:14px;border-radius:2px;
  background:var(--c-text-2);transform:translateY(-50%);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
  background-image:none;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) scaleY(0);opacity:0;}
.faq-acc .accordion-button:not(.collapsed)::before{background:var(--c-teal);}
.faq-acc .accordion-body{padding:0 20px 20px;font-size:16px;line-height:1.85;color:var(--c-text-2);}
.faq-acc .accordion-body p{font-size:16px;margin-bottom:10px;}
.faq-acc .accordion-body p:last-child{margin-bottom:0;}

/* ---------- 表单 ---------- */
.cta-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  padding:48px;box-shadow:var(--shadow-1);
}
.cta-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start;}
.cta-grid .intro h2{margin-bottom:16px;}
.cta-grid .intro p{font-size:16px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:6px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface-2);padding:12px 14px;font-size:15px;color:var(--c-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  min-height:44px;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(47,214,192,.18);
}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.form-note{font-size:13px;color:var(--c-text-3);margin-top:14px;}
.form-success{
  display:none;background:rgba(47,214,192,.12);border:1px solid rgba(47,214,192,.4);
  border-radius:var(--r-btn);padding:16px 18px;font-size:15px;color:var(--c-brand-900);font-weight:600;
}
.form-success.show{display:block;}
.privacy-line{
  display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--c-text-3);line-height:1.7;margin-top:8px;
}
.privacy-line input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-teal);flex-shrink:0;}
@media (max-width:991px){
  .cta-panel{padding:28px 20px;border-radius:16px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-brand-950);color:#fff;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand-text{font-size:18px;font-weight:800;color:#fff;display:block;margin-bottom:14px;}
.footer-brand .brand-text em{font-style:normal;color:var(--c-teal);}
.footer-brand p{color:#C9C6E0;font-size:14px;line-height:1.8;max-width:30em;margin:0;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#C9C6E0;font-size:14px;}
.footer-col a:hover{color:var(--c-teal);}
.footer-contact p{color:#C9C6E0;font-size:14px;margin-bottom:8px;}
.qr-box{
  margin-top:16px;width:110px;height:110px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12px;color:#C9C6E0;line-height:1.6;padding:8px;
}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#C9C6E0;
}
@media (max-width:991px){
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* ---------- 响应式板块间距 ---------- */
@media (max-width:991px){
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:16px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .container{padding-left:16px;padding-right:16px;}
  p{font-size:16px;line-height:1.8;}
}
@media print{
  .site-header,.site-footer,.cta-panel,.nav-toggle,.mobile-panel{display:none !important;}
}

/* roulang page: category4 */
:root{
  --c-brand-900:#1E1740;
  --c-brand-950:#14102A;
  --c-brand-800:#2A2159;
  --c-accent:#FF7A3D;
  --c-accent-hover:#F2651F;
  --c-teal:#2FD6C0;
  --c-bg:#F7F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0EFF7;
  --c-text:#191A26;
  --c-text-2:#5A5C70;
  --c-text-3:#8C8FA3;
  --c-line:#E6E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(25,26,38,.05),0 8px 24px rgba(30,23,64,.06);
  --shadow-2:0 4px 10px rgba(25,26,38,.08),0 18px 40px rgba(30,23,64,.12);
  --dur:220ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-brand-900);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--c-teal);}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:.01em;line-height:1.35;}
h1{font-size:40px;font-weight:800;}
h2{font-size:28px;font-weight:700;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(255,122,61,.35);outline-offset:2px;}

.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:var(--c-brand-900);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark span{
  width:0;height:0;
  border-left:9px solid transparent;
  border-right:9px solid transparent;
  border-bottom:15px solid var(--c-teal);
  transform:translateY(-1px);
}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:var(--c-brand-900);
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  color:var(--c-teal);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:22px;
  flex:1;
  min-width:0;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-teal);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-menu a:hover{color:var(--c-brand-900);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{
  color:var(--c-brand-900);
  font-weight:600;
}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:var(--c-surface-2);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-box:focus-within{
  border-color:var(--c-teal);
  background:#fff;
  box-shadow:0 0 0 3px rgba(47,214,192,.18);
}
.search-box svg{width:16px;height:16px;flex-shrink:0;color:var(--c-text-3);}
.search-box input{
  border:0;background:transparent;outline:none;
  font-size:14px;width:100%;color:var(--c-text);
}
.search-box input::placeholder{color:var(--c-text-3);}
.link-tool{
  font-size:14px;
  font-weight:500;
  color:var(--c-text-2);
}
.link-tool:hover{color:var(--c-teal);}
.btn-start{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 20px;
  border-radius:var(--r-btn);
  background:var(--c-accent);
  color:#fff;
  font-size:14px;
  font-weight:600;
  border:0;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-start:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-2px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  cursor:pointer;
}
.nav-toggle i{
  display:block;width:18px;height:2px;background:var(--c-brand-900);border-radius:2px;
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:16px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-panel .nav-menu{
  flex-direction:column;
  align-items:flex-start;
  gap:0;
  width:100%;
}
.mobile-panel .nav-menu a{
  width:100%;
  padding:12px 0;
  border-bottom:1px solid var(--c-line);
  font-size:15px;
}
.mobile-panel .nav-menu a::after{display:none;}
.mobile-panel .search-box{width:100%;margin-top:16px;}

/* ============ 通用按钮 ============ */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  background:var(--c-accent);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:1px solid var(--c-accent);
  cursor:pointer;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-main:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff;transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--c-brand-900);
  font-size:15px;
  font-weight:600;
  border:1px solid var(--c-brand-900);
  cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-brand-900);transform:translateY(-2px);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-brand-900);
}
.text-link::after{
  content:"›";
  font-size:17px;
  transform:translateX(0);
  transition:transform var(--dur) var(--ease);
}
.text-link:hover{color:var(--c-teal);}
.text-link:hover::after{transform:translateX(4px);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-teal);}
.crumb .sep{color:var(--c-text-3);}
.crumb .current{color:var(--c-brand-900);font-weight:600;}

/* ============ 分类 Hero ============ */
.hero-cat{
  background:var(--c-surface-2);
  border-bottom:1px solid var(--c-line);
  padding:56px 0 64px;
  position:relative;
  overflow:hidden;
}
.hero-cat::before{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,214,192,.16),rgba(47,214,192,0) 68%);
  pointer-events:none;
}
.hero-cat-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
  position:relative;
  z-index:1;
}
.hero-cat h1{
  color:var(--c-brand-900);
  margin-bottom:18px;
}
.hero-cat .lead{
  font-size:17px;
  color:var(--c-text-2);
  max-width:34em;
  margin-bottom:26px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:28px;
}
.hero-cat-media{
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  aspect-ratio:4/3;
  background:var(--c-brand-950);
}
.hero-cat-media img{
  width:100%;height:100%;object-fit:cover;
}
.trust-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
  padding-top:22px;
  border-top:1px solid rgba(30,23,64,.1);
}
.trust-row .t-item{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.trust-row .t-num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:20px;
  font-weight:700;
  color:var(--c-brand-900);
  line-height:1.3;
}
.trust-row .t-label{
  font-size:13px;
  color:var(--c-text-2);
}

/* ============ 板块 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section.alt{background:var(--c-surface-2);}
.section-head{
  max-width:780px;
  margin-bottom:36px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-teal);
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--c-teal);
  border-radius:2px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--c-text-2);font-size:16px;}
.section-head.with-action{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}

/* ============ 混合栅格：数据 + 卡片 ============ */
.mix-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:20px;
}
.stat-tile{
  grid-column:span 3;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.stat-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(30,23,64,.18);}
.stat-tile .num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:30px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.2;
}
.stat-tile .num small{font-size:15px;font-weight:600;margin-left:2px;color:var(--c-text-2);}
.stat-tile h3{font-size:17px;margin-bottom:2px;}
.stat-tile p{font-size:14px;color:var(--c-text-2);line-height:1.7;margin:0;}
.info-card{
  grid-column:span 4;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.info-card .thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--c-surface-2);
}
.info-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform var(--dur) var(--ease);
}
.info-card:hover .thumb img{transform:scale(1.04);}
.info-card .body{padding:20px 22px 22px;}
.info-card h3{font-size:18px;margin-bottom:10px;}
.info-card p{font-size:15px;color:var(--c-text-2);line-height:1.75;margin-bottom:14px;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(47,214,192,.14);
  color:var(--c-brand-900);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.info-card .badge-soft{margin-bottom:12px;}

/* ============ 安全设置卡片网格 ============ */
.check-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:18px;
}
.check-card{
  grid-column:span 4;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 22px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,214,192,.5);}
.check-card .idx{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:13px;
  font-weight:700;
  color:var(--c-teal);
  letter-spacing:.08em;
  display:block;
  margin-bottom:10px;
}
.check-card:hover .idx{color:var(--c-accent);}
.check-card h3{font-size:18px;margin-bottom:8px;}
.check-card p{font-size:15px;color:var(--c-text-2);line-height:1.72;margin:0;}
.check-card.wide{grid-column:span 8;}

/* ============ 步骤流程 ============ */
.step-flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  counter-reset:step;
}
.step-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 22px 24px;
  position:relative;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step-item .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--c-brand-900);
  color:#fff;
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:14px;
  font-weight:700;
  margin-bottom:14px;
}
.step-item h3{font-size:17px;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--c-text-2);line-height:1.72;margin:0;}
.step-item .bar{
  height:3px;
  border-radius:3px;
  background:var(--c-line);
  margin-top:16px;
  overflow:hidden;
}
.step-item .bar i{
  display:block;
  height:100%;
  background:linear-gradient(90deg,var(--c-teal),rgba(47,214,192,.3));
  border-radius:3px;
}
.step-item:nth-child(1) .bar i{width:25%;}
.step-item:nth-child(2) .bar i{width:50%;}
.step-item:nth-child(3) .bar i{width:75%;}
.step-item:nth-child(4) .bar i{width:100%;}

/* ============ 深色数据区 ============ */
.band-dark{
  position:relative;
  background:linear-gradient(135deg,#1E1740 0%,#2A2159 100%);
  color:#fff;
  padding:88px 0;
  overflow:hidden;
}
.band-dark .bg-layer{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
}
.band-dark .bg-mask{
  position:absolute;
  inset:0;
  background:rgba(20,16,42,.62);
}
.band-dark .container-x{position:relative;z-index:1;}
.band-dark h2{color:#fff;}
.band-dark .eyebrow{color:var(--c-teal);}
.band-dark .section-head p{color:#C9C6E0;}
.band-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-bottom:28px;
}
.band-stat{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
  padding:24px 22px;
}
.band-stat .num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:32px;
  font-weight:700;
  color:var(--c-teal);
  line-height:1.2;
  margin-bottom:6px;
}
.band-stat h3{color:#fff;font-size:17px;margin-bottom:6px;}
.band-stat p{color:#C9C6E0;font-size:14px;line-height:1.7;margin:0;}
.case-strip{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.case-chip{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-left:3px solid var(--c-teal);
  border-radius:12px;
  padding:20px 22px;
}
.case-chip h3{color:#fff;font-size:16px;margin-bottom:8px;}
.case-chip p{color:#C9C6E0;font-size:14px;line-height:1.72;margin:0;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:900px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item.open{
  border-color:rgba(47,214,192,.55);
  box-shadow:var(--shadow-1);
  border-left:3px solid var(--c-teal);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
}
.faq-q:hover{color:var(--c-brand-900);}
.faq-q .sign{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-brand-900);
  border-radius:2px;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-q .sign::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-q .sign::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item.open .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item.open .sign::before{background:var(--c-teal);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms var(--ease);
}
.faq-a .inner{
  padding:0 22px 20px;
  font-size:16px;
  color:var(--c-text-2);
  line-height:1.85;
  border-top:1px solid var(--c-line);
  padding-top:16px;
  margin:0 22px 20px;
  padding-left:0;
  padding-right:0;
}

/* ============ CTA 表单 ============ */
.cta-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:20px;
  box-shadow:var(--shadow-1);
  padding:40px;
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:40px;
}
.cta-panel h2{margin-bottom:14px;}
.cta-panel .cta-text{color:var(--c-text-2);font-size:16px;margin-bottom:22px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--c-text-2);
}
.cta-points li::before{
  content:"";
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-teal);
  flex-shrink:0;
  margin-top:9px;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:span 2;}
.field label{
  font-size:13px;
  color:var(--c-text-2);
  font-weight:500;
}
.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  padding:11px 14px;
  font-size:15px;
  font-family:inherit;
  color:var(--c-text);
  outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--c-teal);
  box-shadow:0 0 0 3px rgba(47,214,192,.18);
}
.form-actions{
  grid-column:span 2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:4px;
}
.form-tip{font-size:13px;color:var(--c-text-3);}
.form-success{
  display:none;
  grid-column:span 2;
  background:rgba(47,214,192,.12);
  border:1px solid rgba(47,214,192,.45);
  border-radius:var(--r-btn);
  padding:18px 20px;
  font-size:15px;
  color:var(--c-brand-900);
}
.form-success.show{display:block;}
.privacy-line{
  margin-top:18px;
  font-size:13px;
  color:var(--c-text-3);
  display:flex;
  align-items:flex-start;
  gap:8px;
}
.privacy-line input{margin-top:5px;accent-color:var(--c-teal);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-brand-950);
  color:#fff;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand-text{
  display:block;
  font-size:18px;
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand .brand-text em{font-style:normal;color:var(--c-teal);}
.footer-brand p{
  font-size:14px;
  color:#C9C6E0;
  line-height:1.8;
  max-width:30em;
  margin:0;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#C9C6E0;}
.footer-col a:hover{color:var(--c-teal);}
.footer-contact p{font-size:14px;color:#C9C6E0;margin:0 0 8px;}
.qr-box{
  margin-top:14px;
  width:104px;height:104px;
  border:1px dashed rgba(255,255,255,.28);
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  line-height:1.6;
  color:#C9C6E0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#C9C6E0;
}

/* ============ 响应式 ============ */
@media (min-width:1400px){
  .container-x{max-width:1280px;}
}
@media (max-width:1199px){
  .search-box{width:170px;}
  .nav-menu{gap:16px;}
}
@media (max-width:991px){
  .nav-menu,.nav-tools .search-box,.nav-tools .link-tool{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:56px;gap:14px;}
  .nav-tools{margin-left:auto;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  body{font-size:16px;}
  .hero-cat{padding:36px 0 44px;}
  .hero-cat-inner{grid-template-columns:1fr;gap:28px;}
  .hero-cat-media{aspect-ratio:16/10;order:-1;}
  .trust-row{grid-template-columns:repeat(2,1fr);gap:16px;}
  .section{padding:64px 0;}
  .stat-tile{grid-column:span 6;}
  .info-card{grid-column:span 6;}
  .check-card{grid-column:span 6;}
  .check-card.wide{grid-column:span 12;}
  .step-flow{grid-template-columns:repeat(2,1fr);}
  .band-grid{grid-template-columns:repeat(2,1fr);}
  .case-strip{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;padding:28px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container-x{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .section.tight{padding:44px 0;}
  .stat-tile{grid-column:span 6;}
  .info-card{grid-column:span 12;}
  .check-card{grid-column:span 12;}
  .check-card.wide{grid-column:span 12;}
  .step-flow{grid-template-columns:1fr;}
  .band-dark{padding:56px 0;}
  .band-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .field.full,.form-actions,.form-success{grid-column:span 1;}
  .cta-panel{padding:22px;}
  .favq-a .inner{}
  .faq-a .inner{margin:0 18px 18px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
}
@media (max-width:520px){
  .trust-row{grid-template-columns:1fr 1fr;}
  .stat-tile{grid-column:span 12;}
  h1{font-size:26px;}
}
@media print{
  .site-header,.site-footer,.cta-panel,.nav-toggle{display:none !important;}
}