/* roulang page: index */
:root{
  --ink-900:#050D18;
  --ink-800:#0A1A2E;
  --ink-700:#10263F;
  --aqua-400:#35E3C6;
  --aqua-600:#12A98F;
  --coral-500:#FF7A45;
  --paper:#EAF4FF;
  --slate-300:#A9BDD1;
  --line:rgba(53,227,198,.16);
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-card:0 0 0 1px rgba(53,227,198,.14), 0 18px 40px -22px rgba(0,0,0,.72);
  --ease:0.24s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--paper);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
@media (max-width:1024px){.container-x{padding-left:28px;padding-right:28px;}}
@media (max-width:640px){.container-x{padding-left:20px;padding-right:20px;}}

.section{padding:96px 0;}
@media (max-width:1024px){.section{padding:72px 0;}}
@media (max-width:640px){.section{padding:48px 0;}}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--aqua-400);
  outline-offset:2px;
  border-radius:6px;
}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,13,24,.72);
  backdrop-filter:blur(16px) saturate(1.2);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
.nav-inner{height:68px;display:flex;align-items:center;gap:22px;}
@media (max-width:900px){.nav-inner{height:60px;gap:12px;}}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:500;color:var(--paper);white-space:nowrap;}
.logo strong{color:var(--aqua-400);font-weight:800;}
.logo-mark{width:26px;height:26px;flex:0 0 26px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:10px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--slate-300);padding:8px 0;
  transition:color var(--ease);
}
.nav-links a:hover{color:var(--aqua-400);}
.nav-links a.active{color:var(--paper);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 10px rgba(53,227,198,.85);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:38px;width:200px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:rgba(10,26,46,.6);
  transition:width var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{width:260px;border-color:var(--aqua-400);box-shadow:0 0 0 3px rgba(53,227,198,.14);}
.search-box i{font-size:13px;color:var(--slate-300);}
.search-box input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:14px;}
.search-box input::placeholder{color:#6E8296;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;color:var(--paper);align-items:center;justify-content:center;}
@media (max-width:900px){
  .nav-links,.search-box,.nav-right .btn-login,.nav-right .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
}
.nav-mask{position:fixed;inset:0;background:rgba(5,13,24,.6);opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:90;}
.nav-mask.show{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;top:0;left:0;bottom:0;width:82vw;max-width:340px;z-index:95;
  background:linear-gradient(180deg,rgba(16,38,63,.98),rgba(10,26,46,.98));
  border-right:1px solid var(--line);padding:22px 20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(-104%);transition:transform var(--ease);
}
.nav-drawer.open{transform:translateX(0);}
.nav-drawer .drawer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:rgba(5,13,24,.5);}
.nav-drawer .drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:14px;}
.nav-drawer .drawer-links{display:flex;flex-direction:column;gap:4px;margin-top:6px;}
.nav-drawer .drawer-links a{padding:12px 10px;border-radius:10px;color:var(--slate-300);font-size:15px;transition:background var(--ease),color var(--ease);}
.nav-drawer .drawer-links a:hover{background:rgba(53,227,198,.1);color:var(--aqua-400);}
.nav-drawer .drawer-links a.active{color:var(--paper);background:rgba(53,227,198,.12);}
.nav-drawer .drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--aqua-400),var(--aqua-600));color:#04121C;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.35);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--paper);}
.btn-ghost:hover{background:rgba(53,227,198,.12);border-color:var(--aqua-400);transform:translateY(-2px);}
.btn-coral{background:var(--coral-500);color:#180B04;}
.btn-coral:hover{filter:brightness(1.08);box-shadow:0 0 16px rgba(255,122,69,.5);transform:translateY(-2px);}
.btn-login{background:transparent;border:0;color:var(--slate-300);font-size:15px;cursor:pointer;padding:8px 6px;transition:color var(--ease);}
.btn-login:hover{color:var(--aqua-400);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--aqua-400);font-size:15px;font-weight:600;position:relative;}
.btn-text::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--aqua-400);transition:width var(--ease);}
.btn-text:hover::after{width:100%;}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}

/* ============ badges / cards ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:8px;font-size:12.5px;line-height:1;background:rgba(53,227,198,.12);color:var(--aqua-400);border:1px solid rgba(53,227,198,.22);}
.badge-time{background:rgba(169,189,209,.1);color:var(--slate-300);border-color:transparent;}
.card{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,38,63,.72),rgba(10,26,46,.55));
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.28);border-color:rgba(53,227,198,.3);}
.card-pad{padding:28px;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--aqua-400);letter-spacing:.08em;margin-bottom:14px;}
.sec-tag::before{content:"";width:22px;height:1px;background:var(--aqua-400);}
h1.hero-title{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;}
h2.sec-title{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
h3.card-title{font-size:19px;font-weight:600;line-height:1.5;}
h4.mini-title{font-size:17px;font-weight:600;line-height:1.5;}
p.sec-desc{color:var(--slate-300);font-size:16px;line-height:1.8;margin-top:14px;}
.text-muted{color:var(--slate-300);}
.text-aqua{color:var(--aqua-400);}
.img-frame{border-radius:14px;overflow:hidden;border:1px solid rgba(53,227,198,.18);background:linear-gradient(135deg,rgba(18,169,143,.35),rgba(53,227,198,.16));}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1);}
.card:hover .img-frame img,.case-card:hover .img-frame img{transform:scale(1.03);}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(5,13,24,.96) 0%,rgba(5,13,24,.86) 40%,rgba(5,13,24,.42) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,227,198,.18) 0%,rgba(53,227,198,.05) 45%,transparent 70%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:104px 0 76px;}
.hero-copy{max-width:620px;width:56%;}
@media (max-width:900px){.hero-copy{width:100%;max-width:100%;}}
@media (max-width:640px){.hero-inner{padding:64px 0 48px;}}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--aqua-400);border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:rgba(16,38,63,.6);margin-bottom:22px;}
.hero-sub{color:var(--slate-300);font-size:17px;line-height:1.85;margin-top:20px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-strip{
  margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(16,38,63,.72),rgba(10,26,46,.55));
  backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);
  overflow:hidden;
}
.hero-strip li{padding:20px 22px;border-left:1px solid var(--line);}
.hero-strip li:first-child{border-left:0;}
.hero-strip .strip-k{font-size:15px;font-weight:600;color:var(--paper);display:flex;align-items:center;gap:8px;}
.hero-strip .strip-k i{color:var(--aqua-400);font-size:13px;}
.hero-strip .strip-v{font-size:13.5px;color:var(--slate-300);margin-top:6px;line-height:1.7;}
@media (max-width:900px){
  .hero-strip{grid-template-columns:repeat(2,1fr);}
  .hero-strip li{border-left:1px solid var(--line);}
  .hero-strip li:nth-child(odd){border-left:0;}
}
@media (max-width:520px){.hero-strip{grid-template-columns:1fr;}.hero-strip li{border-left:0;border-top:1px solid var(--line);}.hero-strip li:first-child{border-top:0;}}

/* ============ service grid ============ */
.svc-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch;}
.svc-main{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.svc-main .img-frame{border-radius:var(--r-lg) var(--r-lg) 0 0;border-left:0;border-right:0;border-top:0;height:280px;}
.svc-main-body{padding:28px;}
.svc-mini{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.svc-item{padding:22px;border-radius:var(--r-md);border:1px solid var(--line);background:linear-gradient(180deg,rgba(16,38,63,.6),rgba(10,26,46,.42));transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.svc-item:hover{transform:translateY(-2px);border-color:rgba(53,227,198,.3);box-shadow:0 0 22px rgba(53,227,198,.22);}
.svc-num{font-size:32px;font-weight:800;line-height:1;color:var(--aqua-400);opacity:.6;letter-spacing:-.02em;}
.svc-item h3{margin-top:14px;font-size:17px;font-weight:600;}
.svc-item p{margin-top:8px;font-size:14px;color:var(--slate-300);line-height:1.75;}
@media (max-width:900px){
  .svc-grid{grid-template-columns:1fr;}
  .svc-mini{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:560px){.svc-mini{grid-template-columns:1fr;}}

/* ============ stats ============ */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(16,38,63,.66),rgba(10,26,46,.5));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;
}
.stats-band li{padding:30px 26px;border-left:1px solid var(--line);}
.stats-band li:first-child{border-left:0;}
.stat-num{font-size:40px;font-weight:800;line-height:1;color:var(--aqua-400);letter-spacing:-.02em;}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--slate-300);}
.stat-desc{margin-top:12px;font-size:14px;color:var(--slate-300);line-height:1.75;}
@media (max-width:900px){
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stats-band li{border-left:1px solid var(--line);}
  .stats-band li:nth-child(odd){border-left:0;}
  .stats-band li:nth-child(n+3){border-top:1px solid var(--line);}
}

/* ============ cases ============ */
.case-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.case-card{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease);}
.case-card:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.28);}
.case-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.case-card:hover img{transform:scale(1.04);}
.case-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,13,24,.12) 0%,rgba(5,13,24,.86) 78%);}
.case-body{position:relative;z-index:2;padding:24px;display:flex;flex-direction:column;justify-content:flex-end;height:100%;min-height:inherit;}
.case-body h3{font-size:19px;font-weight:600;margin-top:12px;}
.case-body p{font-size:14px;color:var(--slate-300);margin-top:8px;line-height:1.75;}
.case-a{grid-column:span 4;min-height:400px;}
.case-b{grid-column:span 2;min-height:400px;}
.case-c{grid-column:span 3;min-height:250px;}
.case-d{grid-column:span 3;min-height:250px;}
.case-corner{position:absolute;top:18px;right:18px;z-index:3;background:var(--coral-500);color:#180B04;font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;}
@media (max-width:900px){
  .case-grid{grid-template-columns:1fr;}
  .case-a,.case-b,.case-c,.case-d{grid-column:span 1;min-height:240px;}
}

/* ============ flow ============ */
.flow-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.flow-sticky{position:sticky;top:110px;}
.flow-item{position:relative;padding:0 0 34px 26px;border-left:2px solid var(--line);transition:border-color var(--ease);}
.flow-item:last-child{padding-bottom:0;}
.flow-item:hover{border-left-color:var(--aqua-400);}
.flow-item::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--ink-900);border:2px solid var(--aqua-400);}
.flow-item .flow-idx{font-size:13px;color:var(--aqua-400);letter-spacing:.1em;}
.flow-item h3{margin-top:8px;font-size:19px;font-weight:600;}
.flow-item p{margin-top:10px;font-size:15px;color:var(--slate-300);line-height:1.8;}
@media (max-width:900px){
  .flow-grid{grid-template-columns:1fr;gap:28px;}
  .flow-sticky{position:static;}
}

/* ============ faq ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-radius:var(--r-md);border:1px solid var(--line);background:linear-gradient(180deg,rgba(16,38,63,.62),rgba(10,26,46,.45));margin-bottom:14px;overflow:hidden;position:relative;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--aqua-400);opacity:0;transition:opacity var(--ease);}
.faq-item.open{border-color:rgba(53,227,198,.34);box-shadow:0 0 22px rgba(53,227,198,.18);}
.faq-item.open::before{opacity:1;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;background:transparent;border:0;text-align:left;padding:20px 24px;font-size:17px;font-weight:600;cursor:pointer;color:var(--paper);}
.faq-q i{color:var(--aqua-400);font-size:14px;transition:transform var(--ease);}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease);}
.faq-item.open .faq-a{max-height:280px;}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--slate-300);line-height:1.85;}

/* ============ news ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr;}}
.news-card{display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(180deg,rgba(16,38,63,.66),rgba(10,26,46,.48));box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.news-card:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.26);border-color:rgba(53,227,198,.3);}
.news-cover{display:block;height:172px;overflow:hidden;background:linear-gradient(135deg,rgba(18,169,143,.42),rgba(53,227,198,.18));}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1);}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{transition:color var(--ease);}
.news-body h3 a:hover{color:var(--aqua-400);}
.news-body .news-sum{font-size:14px;color:var(--slate-300);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;border-radius:var(--r-lg);border:1px dashed rgba(53,227,198,.3);
  background:linear-gradient(180deg,rgba(16,38,63,.5),rgba(10,26,46,.35));text-align:center;padding:32px;
}
.news-empty i{font-size:30px;color:var(--aqua-400);opacity:.8;}
.news-empty p{color:var(--slate-300);font-size:15px;}

/* ============ contact ============ */
.contact-card{border-radius:20px;border:1px solid var(--line);padding:40px;background:linear-gradient(180deg,rgba(16,38,63,.72),rgba(10,26,46,.55));backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);position:relative;overflow:hidden;box-shadow:var(--shadow-card);}
.contact-card::before{content:"";position:absolute;left:-80px;top:-80px;width:340px;height:340px;background:radial-gradient(circle,rgba(53,227,198,.16),transparent 68%);pointer-events:none;}
.contact-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1.05fr;gap:44px;}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr;gap:30px;}}
@media (max-width:640px){.contact-card{padding:26px;}}
.contact-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--slate-300);}
.contact-list li:last-child{border-bottom:0;}
.contact-list i{color:var(--aqua-400);margin-top:5px;font-size:14px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--slate-300);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;background:var(--ink-800);border:1px solid var(--line);border-radius:10px;
  padding:12px 16px;font-size:15px;color:var(--paper);outline:0;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#6E8296;}
.field input:focus,.field textarea:focus{border-color:var(--aqua-400);box-shadow:0 0 0 3px rgba(53,227,198,.14);}
.field textarea{min-height:120px;resize:vertical;}
.form-tip{display:none;margin-top:14px;font-size:14px;color:var(--aqua-400);}
.form-tip.show{display:block;}

/* ============ footer ============ */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,26,46,.6),rgba(5,13,24,1));padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
@media (max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-col h4{font-size:14px;font-weight:600;color:var(--aqua-400);margin-bottom:16px;letter-spacing:.02em;}
.footer-col p{font-size:14px;color:var(--slate-300);line-height:1.8;}
.footer-col li{margin-bottom:10px;}
.footer-col li a{font-size:14px;color:var(--slate-300);transition:color var(--ease);}
.footer-col li a:hover{color:var(--paper);}
.footer-icons{display:flex;gap:10px;margin-top:16px;}
.footer-icons a{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);color:var(--slate-300);transition:color var(--ease),border-color var(--ease),background var(--ease);}
.footer-icons a:hover{color:var(--aqua-400);border-color:var(--aqua-400);background:rgba(53,227,198,.1);}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:var(--slate-300);}

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

/* roulang page: category1 */
:root{
  --ink-900:#050D18;
  --ink-800:#0A1A2E;
  --ink-700:#10263F;
  --aqua-400:#35E3C6;
  --aqua-600:#12A98F;
  --coral-500:#FF7A45;
  --paper:#EAF4FF;
  --slate-300:#A9BDD1;
  --line:rgba(53,227,198,.16);
  --line-soft:rgba(169,189,209,.14);
  --radius-xl:20px;
  --radius-lg:18px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-card:0 0 0 1px rgba(53,227,198,.14), 0 18px 40px -22px rgba(0,0,0,.72);
  --shadow-hover:0 0 24px rgba(53,227,198,.28), 0 22px 44px -24px rgba(0,0,0,.8);
  --ease:0.24s cubic-bezier(.2,.7,.3,1);
  --glass:linear-gradient(180deg, rgba(16,38,63,.72), rgba(10,26,46,.55));
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--paper);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--aqua-400);text-decoration:none;transition:color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--aqua-400);outline-offset:2px;border-radius:6px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,13,24,.72);
  backdrop-filter:blur(16px) saturate(1.2);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--paper);font-size:17px;font-weight:400;letter-spacing:.01em;}
.logo strong{color:var(--aqua-400);font-weight:800;}
.logo-mark{width:26px;height:26px;flex:none;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px;}
.nav-links a{position:relative;color:var(--slate-300);font-size:15px;padding:6px 2px;white-space:nowrap;}
.nav-links a:hover{color:var(--aqua-400);}
.nav-links a.active{color:var(--paper);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 12px rgba(53,227,198,.7);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 14px;
  background:rgba(10,26,46,.75);
  border:1px solid var(--line);border-radius:999px;
  transition:width var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.search-box i{color:var(--slate-300);font-size:13px;}
.search-box input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--paper);}
.search-box input::placeholder{color:rgba(169,189,209,.7);}
.search-box:focus-within{width:260px;border-color:var(--aqua-400);box-shadow:0 0 18px rgba(53,227,198,.22);}
.btn-login{background:none;border:0;color:var(--paper);font-size:15px;cursor:pointer;padding:8px 6px;min-height:44px;transition:color var(--ease);}
.btn-login:hover{color:var(--aqua-400);}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--paper);cursor:pointer;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--aqua-400),var(--aqua-600));color:#04121C;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.35);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--aqua-400);}
.btn-ghost:hover{background:rgba(53,227,198,.12);border-color:var(--aqua-400);}
.btn-coral{background:var(--coral-500);color:#1B0A03;}
.btn-coral:hover{filter:brightness(1.08);box-shadow:0 0 16px rgba(255,122,69,.45);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn:active{transform:translateY(0) scale(.99);}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(5,13,24,.6);opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:70;}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:82vw;max-width:340px;
  background:var(--ink-800);border-right:1px solid var(--line);
  transform:translateX(-100%);transition:transform var(--ease);
  z-index:80;padding:24px 20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:20px;
}
.drawer.open{transform:none;}
.drawer .drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer .drawer-links a{color:var(--slate-300);font-size:15px;padding:12px 10px;border-radius:var(--radius-btn);}
.drawer .drawer-links a:hover,.drawer .drawer-links a.active{background:rgba(53,227,198,.1);color:var(--aqua-400);}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-actions .btn{width:100%;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;min-height:300px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(5,13,24,.94) 0%, rgba(5,13,24,.78) 52%, rgba(5,13,24,.52) 100%);
}
.cat-hero .container-x{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--slate-300);margin-bottom:18px;}
.crumb a{color:var(--slate-300);}
.crumb a:hover{color:var(--aqua-400);}
.crumb span.sep{opacity:.55;}
.crumb .now{color:var(--paper);}
.cat-hero h1{
  font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.25;letter-spacing:-.02em;
  max-width:820px;margin-bottom:16px;
}
.cat-hero h1 em{font-style:normal;color:var(--aqua-400);}
.hero-lead{max-width:700px;font-size:17px;color:var(--slate-300);line-height:1.85;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(53,227,198,.12);color:var(--aqua-400);border:1px solid var(--line);
}
.tag.gray{background:rgba(169,189,209,.1);color:var(--slate-300);border-color:transparent;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.tight{padding-top:64px;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;margin-bottom:14px;}
.section-head p{color:var(--slate-300);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--aqua-400);
  letter-spacing:.08em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--aqua-400);opacity:.8;}

/* stat strip */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--glass);backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.stat-item{padding:26px 24px;border-right:1px solid var(--line-soft);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:30px;font-weight:800;color:var(--aqua-400);line-height:1.2;text-shadow:0 0 22px rgba(53,227,198,.35);}
.stat-num small{font-size:14px;font-weight:600;margin-left:4px;color:var(--slate-300);text-shadow:none;}
.stat-label{font-size:14px;color:var(--slate-300);margin-top:6px;}

/* zigzag rows */
.zig-list{display:flex;flex-direction:column;gap:0;}
.zig-row{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line-soft);
}
.zig-row:first-child{border-top:0;padding-top:8px;}
.zig-row.reverse .zig-media{order:2;}
.zig-row.reverse .zig-text{order:1;}
.zig-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(135deg, rgba(53,227,198,.22), rgba(10,26,46,.9));
  box-shadow:var(--shadow-card);
}
.zig-media img{width:100%;height:320px;object-fit:cover;transition:transform var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-index{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  color:var(--aqua-400);letter-spacing:.06em;margin-bottom:14px;
}
.zig-index b{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;
  background:rgba(53,227,198,.14);border:1px solid var(--line);
  font-size:14px;font-weight:800;
}
.zig-text h3{font-size:21px;font-weight:600;margin-bottom:14px;}
.zig-text p{color:var(--slate-300);font-size:15.5px;margin-bottom:12px;}
.zig-points{list-style:none;display:flex;flex-direction:column;gap:8px;margin-top:16px;}
.zig-points li{position:relative;padding-left:20px;font-size:15px;color:var(--paper);}
.zig-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 10px rgba(53,227,198,.5);
}

/* key list block */
.key-block{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.key-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform var(--ease), box-shadow var(--ease);
}
.key-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.key-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.key-card .desc{font-size:14.5px;color:var(--slate-300);margin-bottom:18px;}
.key-list{list-style:none;display:flex;flex-direction:column;gap:14px;}
.key-list li{position:relative;padding-left:22px;font-size:15px;color:var(--paper);line-height:1.75;}
.key-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 10px rgba(53,227,198,.5);
}
.key-list li span{display:block;font-size:13.5px;color:var(--slate-300);margin-top:4px;}

/* notice strip */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(180deg, rgba(16,38,63,.6), rgba(10,26,46,.45));
  border:1px solid var(--line);border-left:3px solid var(--aqua-400);
  border-radius:var(--radius-md);padding:20px 24px;margin-top:36px;
}
.notice i{color:var(--aqua-400);font-size:18px;margin-top:5px;}
.notice p{font-size:14.5px;color:var(--slate-300);}
.notice strong{color:var(--paper);}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--glass);backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:44px 48px;box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle, rgba(53,227,198,.35), rgba(53,227,198,0) 68%);
  opacity:.5;pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;position:relative;}
.cta-band p{color:var(--slate-300);font-size:15px;max-width:620px;position:relative;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;}

/* footer */
.site-footer{
  margin-top:96px;padding:64px 0 28px;
  background:var(--ink-800);border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--aqua-400);margin-bottom:16px;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:var(--slate-300);font-size:14px;}
.footer-col a:hover{color:var(--paper);}
.footer-col p{color:var(--slate-300);font-size:14px;max-width:320px;margin-bottom:18px;}
.footer-icons{display:flex;gap:12px;}
.footer-icons a{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--aqua-400);font-size:14px;
}
.footer-icons a:hover{background:rgba(53,227,198,.12);box-shadow:0 0 16px rgba(53,227,198,.25);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:48px;padding-top:20px;
  font-size:12.5px;color:var(--slate-300);
}

/* responsive */
@media (max-width:1024px){
  .container-x{padding:0 28px;}
  .search-box{display:none;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line-soft);}
  .zig-row{grid-template-columns:1fr;gap:28px;padding:44px 0;}
  .zig-row.reverse .zig-media{order:0;}
  .zig-row.reverse .zig-text{order:0;}
  .zig-media img{height:280px;}
  .key-block{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px;}
}
@media (max-width:640px){
  .container-x{padding:0 20px;}
  .nav-inner{height:60px;gap:12px;}
  .logo{font-size:15.5px;}
  .btn-login,.nav-right .btn-ghost{display:none;}
  .cat-hero{min-height:260px;}
  .cat-hero .container-x{padding-top:44px;padding-bottom:44px;}
  .hero-lead{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .stat-item{padding:20px 18px;}
  .stat-num{font-size:24px;}
  .zig-media img{height:210px;}
  .zig-text h3{font-size:18px;}
  .key-card{padding:22px;}
  .cta-band{padding:28px 22px;gap:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink-900:#050D18;
  --ink-800:#0A1A2E;
  --ink-700:#10263F;
  --aqua-400:#35E3C6;
  --aqua-600:#12A98F;
  --coral-500:#FF7A45;
  --paper:#EAF4FF;
  --slate-300:#A9BDD1;
  --line:rgba(53,227,198,.16);
  --radius-lg:18px;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow:0 0 0 1px rgba(53,227,198,.14), 0 18px 40px -22px rgba(0,0,0,.72);
  --ease:cubic-bezier(.2,.7,.3,1);
  --glass:linear-gradient(180deg,rgba(16,38,63,.72),rgba(10,26,46,.55));
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--paper);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--aqua-400);outline-offset:2px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:var(--shadow);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,13,24,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;color:var(--paper);white-space:nowrap}
.logo-mark{width:22px;height:22px;flex:none}
.logo strong{color:var(--aqua-400);font-weight:700}
.nav-links{display:flex;align-items:center;gap:26px;font-size:15px;margin-left:10px}
.nav-links a{position:relative;padding:6px 0;color:var(--slate-300);transition:color .24s var(--ease)}
.nav-links a:hover{color:var(--aqua-400)}
.nav-links a.active{color:var(--paper)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 12px rgba(53,227,198,.7);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;width:200px;padding:8px 14px;
  border:1px solid var(--line);border-radius:999px;background:rgba(16,38,63,.5);
  transition:width .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search-box i{color:var(--slate-300);font-size:13px}
.search-box input{width:100%;border:0;background:transparent;color:var(--paper);outline:none;font-size:14px}
.search-box input::placeholder{color:rgba(169,189,209,.65)}
.search-box:focus-within{width:260px;border-color:rgba(53,227,198,.5);box-shadow:0 0 0 3px rgba(53,227,198,.12)}
.btn-login{background:none;border:0;color:var(--paper);font-size:14px;padding:8px 4px;cursor:pointer;transition:color .24s var(--ease)}
.btn-login:hover{color:var(--aqua-400)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),filter .24s var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--aqua-400),var(--aqua-600));color:#04121C}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 24px rgba(53,227,198,.35)}
.btn-ghost{border-color:rgba(53,227,198,.45);color:var(--aqua-400);background:transparent}
.btn-ghost:hover{background:rgba(53,227,198,.12)}
.btn-coral{background:var(--coral-500);color:#1B0A02}
.btn-coral:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 16px rgba(255,122,69,.45)}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--paper);cursor:pointer;
}
.nav-toggle:hover{color:var(--aqua-400);border-color:rgba(53,227,198,.45)}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--slate-300);padding:22px 0 0}
.breadcrumb a{color:var(--slate-300);transition:color .24s var(--ease)}
.breadcrumb a:hover{color:var(--aqua-400)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{
  color:var(--paper);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章头部 ============ */
.article-hero{padding:20px 0 38px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;
  color:var(--aqua-400);background:rgba(53,227,198,.12);
  border-radius:8px;padding:5px 10px;line-height:1.4;
}
.badge-gray{background:rgba(169,189,209,.12);color:var(--slate-300)}
.article-hero h1{
  font-size:clamp(26px,4vw,40px);line-height:1.3;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 18px;max-width:920px;
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:12.5px;color:var(--slate-300)}
.meta-row i{color:var(--aqua-600);margin-right:6px}

/* ============ 封面 ============ */
.cover-wrap{margin:34px 0 0}
.article-cover{
  border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,#0A1A2E,#0E3B4A);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-caption{font-size:12.5px;color:var(--slate-300);padding:12px 2px 0}

/* ============ 主体布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;
  padding:48px 0 56px;align-items:start;
}
.article-body{max-width:760px;font-size:17px;line-height:1.9;overflow-wrap:break-word}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.5;
  margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--aqua-400);
}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 12px}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--aqua-400);border-bottom:1px solid rgba(53,227,198,.4);transition:color .24s var(--ease)}
.article-body a:hover{color:#7FF3DE}
.article-body ul{list-style:none;padding:0;margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.75em;width:8px;height:8px;border-radius:2px;
  background:var(--aqua-400);box-shadow:0 0 10px rgba(53,227,198,.6);
}
.article-body ol{padding-left:24px;margin:0 0 1.2em}
.article-body ol li{margin-bottom:10px}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;border-left:3px solid var(--aqua-400);
  background:linear-gradient(180deg,rgba(16,38,63,.72),rgba(10,26,46,.5));
  border-radius:12px;color:var(--paper);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px 0;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12.5px;color:var(--slate-300);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th{
  color:var(--aqua-400);font-weight:600;text-align:left;
  padding:12px 14px;background:rgba(16,38,63,.7);border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 14px;border-bottom:1px solid rgba(53,227,198,.08);color:var(--paper)}
.article-body tr:nth-child(even) td{background:rgba(16,38,63,.35)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 28px;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:var(--glass);
}
.empty-state i{font-size:34px;color:var(--aqua-400)}
.empty-state h2{border-left:0;padding-left:0;margin:18px 0 10px;font-size:22px;text-align:center}
.empty-state p{color:var(--slate-300);font-size:15px;max-width:460px;margin:0 auto 22px}

/* ============ 标签 / 分享 ============ */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--slate-300)}
.tag{
  display:inline-flex;align-items:center;font-size:13px;padding:6px 12px;border-radius:8px;
  background:rgba(53,227,198,.1);color:var(--aqua-400);border:1px solid rgba(53,227,198,.2);
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.tag:hover{background:rgba(53,227,198,.2);transform:translateY(-2px)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px}
.share-row span.share-label{font-size:13px;color:var(--slate-300)}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;padding:9px 14px;border-radius:10px;
  border:1px solid var(--line);background:rgba(16,38,63,.55);color:var(--slate-300);cursor:pointer;
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.share-btn:hover{color:var(--aqua-400);border-color:rgba(53,227,198,.45);transform:translateY(-2px)}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:92px;display:grid;gap:20px}
.side-card{padding:22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px)}
.side-card h3{font-size:16px;font-weight:600;margin:0 0 14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--aqua-400);font-size:14px}
.side-list{list-style:none;margin:0;padding:0}
.side-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14px;color:var(--slate-300);
  border-bottom:1px dashed rgba(53,227,198,.14);
  transition:color .24s var(--ease),transform .24s var(--ease);
}
.side-list li:last-child a{border-bottom:0}
.side-list li a:hover{color:var(--aqua-400);transform:translateX(4px)}
.side-note{font-size:14px;color:var(--slate-300);margin:0 0 16px}
.side-card .btn{width:100%}

/* ============ 上下篇 ============ */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:8px 0 56px}
.pager-card{
  display:block;padding:20px 22px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--glass);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.pager-card:hover{transform:translateY(-3px);box-shadow:0 0 24px rgba(53,227,198,.2);border-color:rgba(53,227,198,.35)}
.pager-card small{display:block;font-size:12.5px;color:var(--aqua-400);margin-bottom:8px}
.pager-card strong{display:block;font-size:16px;font-weight:600;line-height:1.6;color:var(--paper)}
.pager-card span{display:block;font-size:12.5px;color:var(--slate-300);margin-top:8px}
.pager-card.next{text-align:right}

/* ============ 相关内容 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;margin:0}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--slate-300)}
.text-link{font-size:14px;color:var(--aqua-400);border-bottom:1px solid rgba(53,227,198,.4);padding-bottom:2px;white-space:nowrap}
.text-link:hover{color:#7FF3DE}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-bottom:72px}
.rel-card{
  display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--glass);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:0 0 24px rgba(53,227,198,.22);border-color:rgba(53,227,198,.35)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0A1A2E,#0E3B4A)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.rel-card:hover .thumb img{transform:scale(1.03)}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{margin:0;font-size:17px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card p{margin:0;font-size:14px;color:var(--slate-300);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:12.5px;color:var(--slate-300)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;padding:48px;
  border:1px solid var(--line);background:var(--glass);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  margin-bottom:88px;
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto auto;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,227,198,.16),transparent 65%);pointer-events:none;
}
.cta-band h2{position:relative;margin:0 0 10px;font-size:clamp(22px,2.6vw,30px);font-weight:700}
.cta-band p{position:relative;margin:0;font-size:15px;color:var(--slate-300);max-width:560px}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--ink-800);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--aqua-400);margin:0 0 16px}
.footer-col p{font-size:14px;color:var(--slate-300);margin:0 0 16px;max-width:300px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:var(--slate-300);transition:color .24s var(--ease)}
.footer-col ul a:hover{color:var(--paper)}
.footer-icons{display:flex;gap:10px}
.footer-icons a{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;color:var(--slate-300);
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.footer-icons a:hover{color:var(--aqua-400);border-color:rgba(53,227,198,.45);transform:translateY(-2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--slate-300);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container-x{padding:0 28px}
  .nav-links{
    position:fixed;top:0;left:0;width:82vw;max-width:340px;height:100vh;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;
    padding:88px 24px 28px;background:var(--ink-800);
    border-right:1px solid var(--line);z-index:60;
    transform:translateX(-102%);transition:transform .24s var(--ease);
  }
  .nav-links a{padding:12px 0;border-bottom:1px solid rgba(53,227,198,.1);font-size:15px}
  .nav-links a.active::after{display:none}
  body.nav-open .nav-links{transform:none}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(5,13,24,.6);z-index:55}
  .search-box{display:none}
  .nav-right .btn-ghost,.nav-right .btn-coral{display:none}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:1fr;gap:36px;padding:36px 0 40px}
  .article-side{position:static}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;margin-bottom:64px}
}
@media (max-width:768px){
  .article-hero h1{font-size:clamp(24px,6vw,32px)}
  .nav-inner{height:60px}
  .logo{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:520px){
  .container-x{padding:0 20px}
  .breadcrumb{padding-top:18px}
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;font-size:14px}
  .cta-band{padding:28px 22px}
  .side-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
    --ink-900:#050D18;
    --ink-800:#0A1A2E;
    --ink-700:#10263F;
    --aqua-400:#35E3C6;
    --aqua-600:#12A98F;
    --coral-500:#FF7A45;
    --paper:#EAF4FF;
    --slate-300:#A9BDD1;
    --line:rgba(53,227,198,.16);
    --r-lg:18px;
    --r-md:16px;
    --r-sm:10px;
    --shadow-soft:0 0 0 1px rgba(53,227,198,.14), 0 18px 40px -22px rgba(0,0,0,.72);
    --shadow-hover:0 0 24px rgba(53,227,198,.28), 0 22px 44px -24px rgba(0,0,0,.8);
    --ease:.24s cubic-bezier(.2,.7,.3,1);
  }

  *{ box-sizing:border-box; }

  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

  body{
    margin:0;
    background:
      radial-gradient(1100px 520px at 88% -6%, rgba(53,227,198,.10), transparent 60%),
      radial-gradient(900px 480px at 4% 24%, rgba(18,169,143,.08), transparent 62%),
      var(--ink-900);
    color:var(--paper);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
    min-height:100vh;
  }

  h1,h2,h3,h4{ margin:0; color:var(--paper); letter-spacing:-.01em; }
  p{ margin:0; }
  ul{ margin:0; padding:0; list-style:none; }
  img{ display:block; max-width:100%; }
  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible{
    outline:2px solid var(--aqua-400);
    outline-offset:2px;
    border-radius:6px;
  }

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(5,13,24,.72);
    -webkit-backdrop-filter:blur(16px) saturate(1.2);
    backdrop-filter:blur(16px) saturate(1.2);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    gap:24px;
    height:68px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:17px;
    color:var(--paper);
    white-space:nowrap;
    transition:opacity var(--ease);
  }
  .logo:hover{ opacity:.86; }
  .logo-mark{ width:26px; height:26px; flex:0 0 auto; }
  .logo strong{ color:var(--aqua-400); font-weight:700; }

  .nav-links{
    display:flex;
    align-items:center;
    gap:22px;
    margin-left:8px;
    font-size:15px;
  }
  .nav-links a{
    position:relative;
    padding:6px 2px;
    color:var(--slate-300);
    transition:color var(--ease);
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-2px;
    height:2px;
    width:0;
    background:linear-gradient(90deg,var(--aqua-400),var(--aqua-600));
    box-shadow:0 0 10px rgba(53,227,198,.6);
    transition:width var(--ease);
  }
  .nav-links a:hover{ color:var(--aqua-400); }
  .nav-links a:hover::after{ width:100%; }
  .nav-links a.active{ color:var(--paper); font-weight:600; }
  .nav-links a.active::after{ width:100%; }

  .nav-right{
    display:flex;
    align-items:center;
    gap:12px;
    margin-left:auto;
  }

  .search-box{
    display:flex;
    align-items:center;
    gap:8px;
    width:200px;
    height:38px;
    padding:0 14px;
    border:1px solid var(--line);
    border-radius:999px;
    background:rgba(16,38,63,.55);
    color:var(--slate-300);
    transition:width var(--ease), border-color var(--ease), box-shadow var(--ease);
  }
  .search-box i{ font-size:13px; color:var(--aqua-400); }
  .search-box input{
    flex:1;
    min-width:0;
    border:0;
    background:transparent;
    color:var(--paper);
    font-size:14px;
    outline:none;
  }
  .search-box input::placeholder{ color:rgba(169,189,209,.7); }
  .search-box:focus-within{
    width:260px;
    border-color:var(--aqua-400);
    box-shadow:0 0 0 4px rgba(53,227,198,.12);
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
  }
  .btn-sm{ min-height:38px; padding:0 16px; font-size:14px; }
  .btn-primary{
    background:linear-gradient(120deg,var(--aqua-400),var(--aqua-600));
    color:#04121C;
    box-shadow:0 12px 28px -16px rgba(53,227,198,.8);
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 0 24px rgba(53,227,198,.34), 0 18px 34px -18px rgba(0,0,0,.8);
  }
  .btn-primary:active{ transform:translateY(0); }
  .btn-ghost{
    background:transparent;
    border-color:rgba(53,227,198,.5);
    color:var(--aqua-400);
  }
  .btn-ghost:hover{
    background:rgba(53,227,198,.12);
    transform:translateY(-2px);
  }
  .btn-coral{
    background:var(--coral-500);
    color:#1B0A02;
    border-color:transparent;
  }
  .btn-coral:hover{
    transform:translateY(-2px);
    box-shadow:0 0 16px rgba(255,122,69,.45);
  }
  .btn-login{
    background:transparent;
    border:0;
    color:var(--slate-300);
    font-size:15px;
    min-height:38px;
    padding:0 8px;
    cursor:pointer;
    border-bottom:1px solid transparent;
    transition:color var(--ease), border-color var(--ease);
  }
  .btn-login:hover{ color:var(--aqua-400); border-color:rgba(53,227,198,.5); }

  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    border-radius:var(--r-sm);
    background:rgba(16,38,63,.6);
    color:var(--paper);
    font-size:17px;
    cursor:pointer;
  }

  /* 移动抽屉 */
  .drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(5,13,24,.6);
    opacity:0;
    visibility:hidden;
    transition:opacity var(--ease), visibility var(--ease);
    z-index:80;
  }
  .drawer-mask.open{ opacity:1; visibility:visible; }
  .drawer{
    position:fixed;
    top:0;
    left:0;
    width:82vw;
    max-width:340px;
    height:100dvh;
    z-index:90;
    padding:22px 20px 28px;
    background:linear-gradient(180deg,var(--ink-800),var(--ink-900));
    border-right:1px solid var(--line);
    transform:translateX(-102%);
    transition:transform var(--ease);
    overflow-y:auto;
    display:flex;
    flex-direction:column;
    gap:22px;
  }
  .drawer.open{ transform:translateX(0); }
  .drawer-head{ display:flex; align-items:center; gap:10px; }
  .drawer-head .search-box{ width:100%; }
  .drawer-head .search-box:focus-within{ width:100%; }
  .drawer-close{
    width:40px; height:40px; flex:0 0 auto;
    border:1px solid var(--line);
    border-radius:var(--r-sm);
    background:transparent;
    color:var(--paper);
    cursor:pointer;
  }
  .drawer-links{ display:flex; flex-direction:column; gap:6px; }
  .drawer-links a{
    padding:13px 14px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    color:var(--slate-300);
    font-size:15px;
    min-height:44px;
    display:flex;
    align-items:center;
    transition:background var(--ease), color var(--ease), border-color var(--ease);
  }
  .drawer-links a:hover{ background:rgba(53,227,198,.1); color:var(--paper); }
  .drawer-links a.active{ border-color:var(--line); color:var(--aqua-400); background:rgba(53,227,198,.08); }
  .drawer-actions{ margin-top:auto; display:flex; flex-direction:column; gap:10px; }
  .drawer-actions .btn{ width:100%; }

  /* ---------- 通用组件 ---------- */
  .glass{
    background:linear-gradient(180deg, rgba(16,38,63,.72), rgba(10,26,46,.55));
    -webkit-backdrop-filter:blur(14px) saturate(1.2);
    backdrop-filter:blur(14px) saturate(1.2);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    box-shadow:var(--shadow-soft);
  }

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:8px;
    background:rgba(53,227,198,.12);
    border:1px solid rgba(53,227,198,.24);
    color:var(--aqua-400);
    font-size:13px;
    font-weight:600;
    letter-spacing:.04em;
  }

  .section{ padding:86px 0; }
  .section-tight{ padding:64px 0; }
  .section-head{ max-width:760px; margin-bottom:40px; }
  .section-head h2{
    font-size:clamp(24px,3.2vw,36px);
    line-height:1.3;
    font-weight:700;
    margin-bottom:14px;
  }
  .section-head p{ color:var(--slate-300); font-size:16px; }

  .hairline{
    height:1px;
    background:linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
    margin:0;
  }

  /* ---------- 小 Hero ---------- */
  .page-hero{
    position:relative;
    padding:56px 0 72px;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-hero::before{
    content:"";
    position:absolute;
    right:-120px;
    top:-160px;
    width:520px;
    height:520px;
    border-radius:50%;
    background:radial-gradient(circle at center, rgba(53,227,198,.20), transparent 66%);
    pointer-events:none;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    left:-180px;
    bottom:-200px;
    width:420px;
    height:420px;
    border-radius:50%;
    border:1px solid rgba(53,227,198,.10);
    box-shadow:0 0 0 60px rgba(53,227,198,.03), 0 0 0 120px rgba(53,227,198,.02);
    pointer-events:none;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--slate-300);
    margin-bottom:22px;
  }
  .breadcrumb a{ transition:color var(--ease); }
  .breadcrumb a:hover{ color:var(--aqua-400); }
  .breadcrumb i{ font-size:10px; opacity:.7; }
  .breadcrumb span{ color:var(--paper); }

  .hero-title{
    font-size:clamp(26px,4vw,40px);
    line-height:1.26;
    font-weight:800;
    margin:18px 0 16px;
  }
  .hero-lead{
    color:var(--slate-300);
    font-size:17px;
    line-height:1.85;
    max-width:520px;
  }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:26px; }

  .hero-facts{
    display:flex;
    flex-wrap:wrap;
    gap:14px 28px;
    margin-top:30px;
    padding-top:22px;
    border-top:1px solid var(--line);
  }
  .hero-facts div{ display:flex; flex-direction:column; gap:2px; }
  .hero-facts b{
    font-size:22px;
    color:var(--aqua-400);
    font-weight:800;
    letter-spacing:-.01em;
  }
  .hero-facts span{ font-size:13px; color:var(--slate-300); }

  .hero-visual{ position:relative; }
  .hero-visual img{
    width:100%;
    aspect-ratio:4 / 3;
    object-fit:cover;
    border-radius:var(--r-lg);
    border:1px solid var(--line);
    background:linear-gradient(140deg, rgba(53,227,198,.22), rgba(10,26,46,.9));
    box-shadow:var(--shadow-soft);
  }
  .hero-badge{
    position:absolute;
    left:-14px;
    bottom:26px;
    padding:14px 18px;
    border-radius:var(--r-sm);
    background:linear-gradient(180deg, rgba(16,38,63,.94), rgba(10,26,46,.9));
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    max-width:230px;
  }
  .hero-badge strong{
    display:block;
    color:var(--aqua-400);
    font-size:15px;
    margin-bottom:4px;
  }
  .hero-badge span{ font-size:13px; color:var(--slate-300); line-height:1.6; }

  /* ---------- 卡片 2×2 ---------- */
  .sec-card{
    position:relative;
    padding:26px 24px 24px;
    border-radius:var(--r-md);
    background:linear-gradient(180deg, rgba(16,38,63,.72), rgba(10,26,46,.55));
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    transition:transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    height:100%;
  }
  .sec-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-hover);
    border-color:rgba(53,227,198,.3);
  }
  .sec-num{
    font-size:32px;
    font-weight:800;
    color:var(--aqua-400);
    opacity:.6;
    line-height:1;
    letter-spacing:-.02em;
  }
  .sec-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    margin:14px 0 16px;
    border-radius:12px;
    background:rgba(53,227,198,.12);
    border:1px solid rgba(53,227,198,.24);
    color:var(--aqua-400);
    font-size:17px;
  }
  .sec-card h3{ font-size:19px; font-weight:600; margin-bottom:12px; }
  .sec-card p{
    color:var(--slate-300);
    font-size:14.5px;
    line-height:1.85;
    margin-bottom:8px;
  }
  .sec-card p:last-child{ margin-bottom:0; }
  .sec-card p i{ color:var(--aqua-600); font-size:9px; margin-right:8px; vertical-align:middle; }

  /* ---------- 时间线 ---------- */
  .step-track{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:24px;
    position:relative;
  }
  .step-track::before{
    content:"";
    position:absolute;
    top:27px;
    left:6%;
    right:6%;
    height:1px;
    background:linear-gradient(90deg, rgba(53,227,198,.4), rgba(53,227,198,.12));
  }
  .step-item{ position:relative; padding-top:0; }
  .step-dot{
    position:relative;
    z-index:2;
    width:54px;
    height:54px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:linear-gradient(180deg, rgba(16,38,63,.98), rgba(10,26,46,.92));
    border:1px solid rgba(53,227,198,.4);
    color:var(--aqua-400);
    font-weight:700;
    font-size:15px;
    box-shadow:0 0 18px rgba(53,227,198,.18);
    margin-bottom:20px;
  }
  .step-item h3{ font-size:17px; font-weight:600; margin-bottom:10px; }
  .step-item p{ color:var(--slate-300); font-size:14.5px; line-height:1.8; }

  /* ---------- 双栏要点 ---------- */
  .note-col{
    padding:28px 26px;
    border-radius:var(--r-md);
    background:linear-gradient(180deg, rgba(16,38,63,.6), rgba(10,26,46,.42));
    border:1px solid var(--line);
    height:100%;
  }
  .note-col h3{
    font-size:18px;
    font-weight:600;
    margin-bottom:18px;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .note-col h3 i{ color:var(--aqua-400); font-size:15px; }
  .note-list li{
    position:relative;
    padding-left:22px;
    margin-bottom:14px;
    color:var(--slate-300);
    font-size:15px;
    line-height:1.85;
  }
  .note-list li:last-child{ margin-bottom:0; }
  .note-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:11px;
    width:8px;
    height:8px;
    border-radius:2px;
    background:linear-gradient(140deg,var(--aqua-400),var(--aqua-600));
  }
  .note-list li strong{ color:var(--paper); font-weight:600; }

  /* ---------- FAQ ---------- */
  .faq-list{ max-width:820px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
  .faq-item{
    position:relative;
    border-radius:var(--r-md);
    background:linear-gradient(180deg, rgba(16,38,63,.72), rgba(10,26,46,.55));
    border:1px solid var(--line);
    overflow:hidden;
    transition:border-color var(--ease), box-shadow var(--ease);
  }
  .faq-item::before{
    content:"";
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    width:3px;
    background:var(--aqua-400);
    transform:scaleY(0);
    transform-origin:top;
    transition:transform var(--ease);
  }
  .faq-item.open::before{ transform:scaleY(1); }
  .faq-item.open{ box-shadow:var(--shadow-hover); border-color:rgba(53,227,198,.3); }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:20px 24px;
    background:transparent;
    border:0;
    color:var(--paper);
    font-size:17px;
    font-weight:600;
    text-align:left;
    cursor:pointer;
    line-height:1.6;
  }
  .faq-q i{
    color:var(--aqua-400);
    font-size:14px;
    flex:0 0 auto;
    transition:transform var(--ease);
  }
  .faq-item.open .faq-q i{ transform:rotate(180deg); }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height var(--ease);
  }
  .faq-a p{
    padding:0 24px 22px;
    color:var(--slate-300);
    font-size:15px;
    line-height:1.85;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    border-radius:20px;
    padding:40px 38px;
    border:1px solid var(--line);
    background:
      radial-gradient(520px 220px at 12% 0%, rgba(53,227,198,.16), transparent 66%),
      linear-gradient(180deg, rgba(16,38,63,.82), rgba(10,26,46,.66));
    box-shadow:var(--shadow-soft);
    overflow:hidden;
  }
  .cta-band h2{
    font-size:clamp(22px,3vw,30px);
    font-weight:700;
    margin-bottom:12px;
  }
  .cta-band p{
    color:var(--slate-300);
    font-size:15.5px;
    max-width:560px;
  }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:12px; }

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:20px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(10,26,46,.5), rgba(5,13,24,.9));
    padding:64px 0 26px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:36px;
  }
  .footer-col h4{
    font-size:14px;
    font-weight:600;
    color:var(--aqua-400);
    margin-bottom:16px;
    letter-spacing:.03em;
  }
  .footer-col ul li{ margin-bottom:10px; }
  .footer-col ul li a,
  .footer-col p{
    color:var(--slate-300);
    font-size:14px;
    line-height:1.8;
    transition:color var(--ease);
  }
  .footer-col ul li a:hover{ color:var(--paper); }
  .footer-icons{ display:flex; gap:10px; margin-top:18px; }
  .footer-icons a{
    width:38px;
    height:38px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    border:1px solid var(--line);
    background:rgba(16,38,63,.5);
    color:var(--slate-300);
    transition:color var(--ease), border-color var(--ease), transform var(--ease);
  }
  .footer-icons a:hover{
    color:var(--aqua-400);
    border-color:rgba(53,227,198,.4);
    transform:translateY(-2px);
  }
  .footer-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
    color:rgba(169,189,209,.85);
    font-size:13px;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .section{ padding:72px 0; }
    .footer-grid{ grid-template-columns:1.3fr 1fr 1fr; gap:30px; }
  }
  @media (max-width:900px){
    .nav-links, .nav-right .search-box, .nav-right .btn-login, .nav-right .btn-ghost, .nav-right .btn-coral{
      display:none;
    }
    .nav-toggle{ display:inline-flex; }
    .step-track{ grid-template-columns:repeat(2,1fr); }
    .step-track::before{ display:none; }
  }
  @media (max-width:768px){
    .section{ padding:56px 0; }
    .page-hero{ padding:40px 0 56px; }
    .hero-facts{ gap:12px 22px; }
    .cta-band{ padding:30px 22px; }
    .footer-grid{ grid-template-columns:1fr 1fr; gap:26px; }
    .footer-bottom{ flex-direction:column; }
  }
  @media (max-width:520px){
    .step-track{ grid-template-columns:1fr; }
    .hero-badge{ position:static; margin-top:14px; max-width:none; }
    .footer-grid{ grid-template-columns:1fr; }
    .cta-actions .btn{ width:100%; }
    .hero-actions .btn{ width:100%; }
  }

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