/* roulang page: index */
:root{
  --bg:#050A12;
  --bg-soft:#0A1524;
  --panel:#0B1424;
  --panel-2:#0E1A2C;
  --primary:#2FD8E8;
  --primary-hover:#63E6F2;
  --primary-active:#16B4C4;
  --primary-deep:#0E7C93;
  --amber:#F2B33D;
  --success:#37D39A;
  --danger:#FF6B6B;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#64748B;
  --hair:rgba(150,215,255,.10);
  --hair-strong:rgba(150,215,255,.14);
  --glass:rgba(150,215,255,.055);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-card:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(2,8,18,.45);
  --sh-lift:0 18px 44px rgba(2,8,18,.55);
  --sh-glow:0 8px 24px rgba(47,216,232,.28);
  --nav-h:78px;
  --ease:.22s ease;
  --bs-primary:#2FD8E8;
  --bs-body-bg:#050A12;
  --bs-body-color:#E9F2FA;
  --bs-border-color:rgba(150,215,255,.10);
  --bs-link-color:#2FD8E8;
  --bs-link-hover-color:#63E6F2;
  --bs-border-radius:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:linear-gradient(180deg,#050A12 0%,#0A1524 100%);
  z-index:-1;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--text)}
h3{font-size:20px;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
.num{font-family:"Inter","Roboto Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
.sec{padding:88px 0}
.sec-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:30px}
.sec-head .sec-desc{color:var(--text-2);font-size:14px;margin-top:10px;max-width:640px}
.sec-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap}
.sec-more svg{transition:transform var(--ease)}
.sec-more:hover svg{transform:translateX(4px)}

/* ============ 顶部条 ============ */
.topbar{height:36px;background:#040810;border-bottom:1px solid var(--hair);display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topbar-note{font-size:13px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{font-size:13px;color:var(--text-2)}
.topbar-links a:hover{color:var(--primary)}
.topbar-icon{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border:1px solid var(--hair-strong);border-radius:8px;color:var(--text-2)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.nav-shell{
  height:var(--nav-h);
  background:rgba(11,20,36,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hair);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-stuck .nav-shell{background:rgba(8,15,28,.86);box-shadow:0 12px 30px rgba(2,8,18,.55),inset 0 1px 0 rgba(255,255,255,.06)}
.nav-inner{display:flex;align-items:center;gap:20px;height:100%}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04121A;font-weight:700;font-size:16px;letter-spacing:.5px;
  font-family:"Inter",sans-serif;
  box-shadow:var(--sh-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.5px}
.brand-sub{font-size:12px;color:var(--text-2);white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-card{
  display:inline-flex;align-items:center;
  height:44px;padding:0 16px;
  font-size:14px;font-weight:600;color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--hair);
  border-radius:var(--r-sm);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:all var(--ease);
  white-space:nowrap;
}
.nav-card:hover{border-color:var(--primary);color:var(--text);background:rgba(47,216,232,.10)}
.nav-card.active{color:#04121A;background:linear-gradient(135deg,var(--primary),var(--primary-deep));border-color:transparent;box-shadow:0 6px 18px rgba(47,216,232,.22)}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--hair-strong);border-radius:var(--r-sm);
  color:var(--text);
}
.nav-toggle:hover{border-color:var(--primary)}

/* ============ 按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  font-size:15px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  border:0;border-radius:var(--r-sm);
  box-shadow:var(--sh-glow);
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
  cursor:pointer;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 12px 30px rgba(47,216,232,.36);color:#04121A}
.btn-main:active{transform:translateY(0);background:var(--primary-active);box-shadow:0 4px 14px rgba(47,216,232,.24)}
.btn-main:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  font-size:15px;font-weight:600;color:var(--primary);
  background:var(--glass);
  border:1px solid var(--primary);
  border-radius:var(--r-sm);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:all var(--ease);
  cursor:pointer;
}
.btn-ghost:hover{background:rgba(47,216,232,.12);color:var(--primary-hover)}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--text-2);
  background:none;border:0;padding:0;cursor:pointer;
  transition:color var(--ease);
}
.btn-line svg{transition:transform var(--ease)}
.btn-line:hover{color:var(--primary)}
.btn-line:hover svg{transform:translateX(4px)}

/* ============ 倒计时条 ============ */
.countdown-bar{
  position:sticky;top:var(--nav-h);z-index:1020;
  height:48px;
  background:rgba(150,215,255,.055);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hair);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.countdown-inner{display:flex;align-items:center;gap:20px;height:100%;width:100%;overflow-x:auto;scrollbar-width:none}
.countdown-inner::-webkit-scrollbar{display:none}
.cd-title{font-size:13px;color:var(--text-2);white-space:nowrap;display:inline-flex;align-items:center;gap:8px}
.cd-dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(55,211,154,.18)}
.cd-clock{display:flex;align-items:center;gap:6px;margin-left:auto}
.cd-cell{display:inline-flex;align-items:baseline;gap:3px}
.cd-num{font-family:"Inter","Roboto Mono",monospace;font-variant-numeric:tabular-nums;font-size:16px;font-weight:700;color:var(--amber);letter-spacing:.5px}
.cd-unit{font-size:12px;color:var(--text-3)}
.cd-sep{color:var(--text-3);font-size:14px}
.cd-link{font-size:13px;font-weight:600;color:var(--primary);white-space:nowrap;margin-left:12px}

/* ============ Hero ============ */
.hero{position:relative;padding:72px 0 88px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.16;background:var(--panel)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,18,.72) 0%,rgba(5,10,18,.94) 62%,var(--bg) 100%)}
.hero-bg::before{
  content:"";position:absolute;inset:0;z-index:1;opacity:.05;
  background-image:linear-gradient(rgba(150,215,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(150,215,255,.6) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero .shell{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;margin-bottom:20px;font-size:12px;font-weight:600;color:var(--primary);
  background:var(--glass);border:1px solid var(--hair-strong);border-radius:999px;
}
.hero h1{font-size:42px;letter-spacing:-.5px}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-safe{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:13px;color:var(--text-3)}
.hero-safe svg{flex:0 0 auto;color:var(--success)}
.hero-stats{display:flex;gap:36px;margin-top:36px;padding-top:26px;border-top:1px solid var(--hair);flex-wrap:wrap}
.hero-stat b{display:block;font-size:24px;color:var(--text);font-family:"Inter","Roboto Mono",monospace;font-variant-numeric:tabular-nums}
.hero-stat span{font-size:13px;color:var(--text-3)}

/* 登录面板 */
.login-panel{
  border-radius:var(--r-lg);
  padding:26px;
  background:rgba(150,215,255,.055);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 18px 44px rgba(2,8,18,.55);
}
.login-panel h2{font-size:20px;font-weight:700}
.login-panel .lp-desc{font-size:13px;color:var(--text-2);margin-top:8px}
.lp-field{margin-top:18px}
.lp-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.lp-input{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;
  background:#0A1524;
  border:1px solid var(--hair-strong);
  border-radius:var(--r-sm);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.lp-input:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,232,.14)}
.lp-input svg{color:var(--text-3);flex:0 0 auto}
.lp-input input{
  flex:1;min-width:0;height:100%;
  background:transparent;border:0;outline:none;
  color:var(--text);font-size:15px;
}
.lp-input input::placeholder{color:#64748B}
.lp-eye{background:none;border:0;padding:4px;color:var(--text-3);cursor:pointer;display:inline-flex;border-radius:6px}
.lp-eye:hover{color:var(--primary)}
.lp-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:13px}
.lp-check{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);cursor:pointer}
.lp-check input{accent-color:#2FD8E8;width:16px;height:16px}
.lp-row a{color:var(--primary);font-weight:600}
.lp-submit{width:100%;margin-top:20px}
.lp-note{margin-top:14px;font-size:13px;color:var(--text-3);min-height:20px}
.lp-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--hair);font-size:12px;color:var(--text-3);line-height:1.7}

/* ============ 卖点卡 ============ */
.point-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.point-card{
  position:relative;overflow:hidden;
  padding:26px 24px;
  background:var(--panel);
  border:1px solid var(--hair);
  border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.point-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--primary);transform:scaleY(0);transform-origin:top;
  transition:transform var(--ease);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:var(--hair-strong)}
.point-card:hover::before{transform:scaleY(1)}
.point-ico{
  width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(47,216,232,.22),rgba(14,124,147,.10));
  color:var(--primary);
  border:1px solid var(--hair-strong);
}
.point-ico.amber{background:linear-gradient(135deg,rgba(242,179,61,.22),rgba(242,179,61,.06));color:var(--amber)}
.point-card h3{margin-top:18px;font-size:18px}
.point-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ 图墙 ============ */
.wall{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:172px;gap:18px}
.wall-item{
  position:relative;overflow:hidden;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--hair);
  box-shadow:var(--sh-card);
}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease}
.wall-item:hover img{transform:scale(1.03)}
.wall-item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,18,.05) 35%,rgba(5,10,18,.88) 100%)}
.wall-cap{position:absolute;left:20px;right:20px;bottom:18px;z-index:2;font-size:15px;font-weight:600;color:var(--text);line-height:1.5}
.wall-item.big{grid-column:span 2;grid-row:span 2}
.wall-item.big .wall-cap{font-size:19px;left:24px;bottom:22px}
.wall-badge{position:absolute;left:20px;top:18px;z-index:2}

/* ============ 徽章 ============ */
.badge-tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;font-size:12px;font-weight:600;
  border-radius:999px;
  background:rgba(47,216,232,.14);color:var(--primary);
  border:1px solid rgba(47,216,232,.28);
}
.badge-tag.amber{background:rgba(242,179,61,.14);color:var(--amber);border-color:rgba(242,179,61,.3)}
.badge-tag.ok{background:rgba(55,211,154,.14);color:var(--success);border-color:rgba(55,211,154,.3)}

/* ============ 资讯列表 ============ */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--panel);
  border:1px solid var(--hair);
  border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  color:var(--text);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:rgba(47,216,232,.36);color:var(--text)}
.nc-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.nc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease}
.news-card:hover .nc-thumb img{transform:scale(1.03)}
.nc-body{padding:20px;display:flex;flex-direction:column;flex:1}
.nc-title{margin-top:12px;font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nc-sum{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.nc-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}
.nc-meta time{font-family:"Inter","Roboto Mono",monospace;font-variant-numeric:tabular-nums}
.nc-arrow{color:var(--primary);display:inline-flex;transition:transform var(--ease)}
.news-card:hover .nc-arrow{transform:translateX(4px)}
.news-card.is-feature{grid-column:1 / -1;flex-direction:row}
.news-card.is-feature .nc-thumb{flex:0 0 44%;aspect-ratio:auto;min-height:250px}
.news-card.is-feature .nc-body{padding:28px;justify-content:center}
.news-card.is-feature .nc-title{font-size:22px;-webkit-line-clamp:2}
.empty-state{
  grid-column:1 / -1;
  padding:56px 24px;text-align:center;
  background:var(--panel);border:1px dashed var(--hair-strong);border-radius:var(--r-md);
  color:var(--text-2);
}
.empty-state svg{color:var(--text-3);margin-bottom:14px}
.empty-state p{font-size:15px}
.empty-state .btn-ghost{margin-top:20px}

/* ============ CTA ============ */
.cta-wrap{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px;
  background:rgba(150,215,255,.055);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 18px 44px rgba(2,8,18,.5);
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.cta-bg{position:absolute;inset:0;z-index:0}
.cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.12}
.cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,10,18,.9),rgba(10,21,36,.75))}
.cta-wrap>*:not(.cta-bg){position:relative;z-index:1}
.cta-wrap h2{font-size:28px}
.cta-wrap .cta-desc{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.8}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;
  background:#0A1524;border:1px solid var(--hair-strong);border-radius:var(--r-sm);
  color:var(--text);font-size:15px;outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:#64748B}
.cta-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,232,.14)}
.cta-form .btn-main{min-height:48px;white-space:nowrap}
.cta-tip{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.7}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:1000px;margin:0 auto}
.faq-item{
  background:rgba(150,215,255,.055);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.open{border-color:rgba(47,216,232,.42);box-shadow:0 0 0 1px rgba(47,216,232,.18),0 10px 26px rgba(2,8,18,.45)}
.faq-btn{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 22px;
  background:none;border:0;text-align:left;
  color:var(--text);cursor:pointer;
  transition:color var(--ease);
}
.faq-btn:hover{color:var(--primary)}
.faq-idx{font-family:"Inter","Roboto Mono",monospace;font-variant-numeric:tabular-nums;font-size:14px;color:var(--primary);flex:0 0 auto}
.faq-q{font-size:16px;font-weight:600;flex:1;line-height:1.5;margin:0}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--hair-strong);color:var(--primary);
  transition:transform var(--ease),background var(--ease);
}
.faq-item.open .faq-sign{background:rgba(47,216,232,.14);transform:rotate(180deg)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-ans{padding:0 22px 22px 60px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:#040810;border-top:1px solid var(--hair)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:40px;height:40px;font-size:14px;border-radius:10px}
.footer-brand b{font-size:16px}
.footer-brand span{display:block;font-size:12px;color:var(--text-3)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.5px}
.footer-col p{font-size:13.5px;color:var(--text-2);line-height:1.8}
.footer-col li+li{margin-top:10px}
.footer-col li a{font-size:13.5px;color:var(--text-2)}
.footer-col li a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid var(--hair);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}
.footer-note{padding:0 0 26px;font-size:12px;color:var(--text-3);line-height:1.8}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .point-grid{grid-template-columns:repeat(2,1fr)}
  .news-list{grid-template-columns:repeat(2,1fr)}
  .news-card.is-feature{flex-direction:column}
  .news-card.is-feature .nc-thumb{flex:none;aspect-ratio:16/9;min-height:0}
  .cta-wrap{grid-template-columns:1fr;gap:28px;padding:36px}
  .wall{grid-template-columns:repeat(2,1fr)}
  .wall-item.big{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  :root{--nav-h:66px}
  .nav-toggle{display:inline-flex}
  .nav-menu.collapse{display:none}
  .nav-menu.collapse.show{
    display:flex;flex-direction:column;align-items:stretch;gap:10px;
    position:absolute;left:20px;right:20px;top:calc(var(--nav-h) + 8px);
    padding:16px;
    background:rgba(11,20,36,.96);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid var(--hair-strong);
    border-radius:var(--r-md);
    box-shadow:0 18px 44px rgba(2,8,18,.6);
  }
  .nav-menu.collapse.show .nav-card{height:46px;justify-content:flex-start}
  .nav-cta{display:none}
  .nav-inner{position:relative}
  .hero h1{font-size:34px}
  .hero{padding:56px 0 64px}
  .sec{padding:64px 0}
  .sec-head h2{font-size:25px}
  .hero-stats{gap:26px}
}
@media (max-width:575.98px){
  .shell{padding:0 16px}
  .topbar-note{font-size:12px}
  .topbar-links{gap:12px}
  .brand-sub{font-size:11px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .hero-stats{gap:20px;justify-content:space-between}
  .hero-stat b{font-size:20px}
  .point-grid{grid-template-columns:1fr}
  .news-list{grid-template-columns:1fr}
  .wall{grid-template-columns:1fr;grid-auto-rows:200px}
  .wall-item.big{grid-column:span 1;grid-row:span 1}
  .cd-clock{margin-left:0}
  .cd-num{font-size:13px}
  .faq-ans{padding-left:22px}
  .cta-form{flex-direction:column}
  .cta-form .btn-main{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 32px}
  .sec{padding:48px 0}
  body{line-height:1.8}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bs-primary:#2FD8E8;
  --bs-body-bg:#050A12;
  --bs-body-color:#E9F2FA;
  --bs-border-color:rgba(150,215,255,.10);
  --bs-link-color:#2FD8E8;
  --bs-link-hover-color:#63E6F2;
  --bs-border-radius:12px;

  --bg:#050A12;
  --bg-2:#0A1524;
  --panel:#0B1424;
  --panel-2:#0E1A2C;
  --glass:rgba(150,215,255,.055);
  --glass-line:rgba(150,215,255,.14);
  --primary:#2FD8E8;
  --primary-hover:#63E6F2;
  --primary-active:#16B4C4;
  --primary-deep:#0E7C93;
  --amber:#F2B33D;
  --success:#37D39A;
  --warn:#FF6B6B;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#64748B;
  --hair:rgba(150,215,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 1px 2px rgba(0,0,0,.4), 0 10px 28px rgba(2,8,18,.45);
  --shadow-lift:0 18px 44px rgba(2,8,18,.55);
  --shadow-glow:0 8px 24px rgba(47,216,232,.28);
  --ease:.22s ease;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","Roboto Mono",ui-monospace,SFMono-Regular,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:700;letter-spacing:.2px}
h1{font-size:40px}
h2{font-size:28px;font-weight:700}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1.1em;color:var(--text-2)}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.shell{max-width:1320px}}

/* ============ 顶部条 ============ */
.topbar{background:rgba(5,10,18,.92);border-bottom:1px solid var(--hair)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-note{font-size:13px;color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-links{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.topbar-links a{font-size:13px;color:var(--text-2)}
.topbar-links a:hover{color:var(--primary)}
.topbar-icon{display:inline-flex;width:24px;height:24px;align-items:center;justify-content:center;border:1px solid var(--glass-line);border-radius:8px;background:var(--glass)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.nav-shell{
  background:rgba(11,20,36,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(9,16,30,.92);box-shadow:0 14px 34px rgba(2,8,18,.55),inset 0 1px 0 rgba(255,255,255,.06)}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:46px;height:46px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:14px;font-weight:800;letter-spacing:.6px;
  color:#04141b;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap}
.brand-sub{font-size:12px;color:var(--text-3);white-space:nowrap}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--glass-line);background:var(--glass);color:var(--text);
  margin-left:auto;cursor:pointer;transition:border-color var(--ease),background var(--ease)
}
.nav-toggle:hover{border-color:rgba(47,216,232,.5);background:rgba(47,216,232,.1)}
.nav-menu{display:flex;align-items:center;gap:10px;margin:0 auto}
.nav-card{
  display:inline-flex;align-items:center;height:44px;padding:0 18px;
  border-radius:var(--r-sm);border:1px solid var(--glass-line);background:var(--glass);
  color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease)
}
.nav-card:hover{color:var(--text);border-color:rgba(47,216,232,.5);background:rgba(47,216,232,.1);transform:translateY(-2px)}
.nav-card.active{color:var(--primary);border-color:rgba(47,216,232,.7);background:rgba(47,216,232,.14)}
.nav-cta{flex:0 0 auto}

/* ============ 按钮 ============ */
.btn-main,.btn-glass,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease),filter var(--ease);
}
.btn-main{
  border:0;color:#04141b;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-glow);
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 12px 30px rgba(47,216,232,.36);color:#04141b}
.btn-main:active{transform:translateY(0);background:linear-gradient(135deg,var(--primary-active),var(--primary-deep))}
.btn-glass{
  border:1px solid rgba(47,216,232,.5);background:var(--glass);color:var(--primary);
}
.btn-glass:hover{background:rgba(47,216,232,.12);color:var(--primary-hover);border-color:var(--primary)}
.btn-ghost{
  border:0;background:transparent;color:var(--text-2);padding:0 4px;
}
.btn-ghost:hover{color:var(--primary);background:transparent}
.btn-ghost svg{transition:transform var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;border:1px solid transparent;
}
.badge-primary{color:var(--primary);background:rgba(47,216,232,.12);border-color:rgba(47,216,232,.34)}
.badge-amber{color:var(--amber);background:rgba(242,179,61,.12);border-color:rgba(242,179,61,.34)}
.badge-success{color:var(--success);background:rgba(55,211,154,.12);border-color:rgba(55,211,154,.32)}

/* ============ 面包屑 ============ */
.breadcrumb-nav{border-bottom:1px solid var(--hair);background:rgba(5,10,18,.6)}
.breadcrumb-inner{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:13px;color:var(--text-3);overflow:hidden}
.breadcrumb-inner a{color:var(--text-2)}
.breadcrumb-inner a:hover{color:var(--primary)}
.breadcrumb-inner .sep{color:var(--text-3);opacity:.7}
.breadcrumb-inner .current{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ============ Banner ============ */
.page-banner{position:relative;overflow:hidden;background:#0B1424}
.banner-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34}
.banner-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,18,.55) 0%,rgba(5,10,18,.86) 58%,var(--bg) 100%)}
.banner-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(150,215,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(150,215,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.banner-inner{position:relative;z-index:2;padding:64px 0 56px;max-width:820px}
.banner-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--amber);font-weight:600;letter-spacing:.4px;margin-bottom:16px}
.banner-inner h1{font-size:42px;margin-bottom:16px}
.banner-lead{font-size:16px;color:var(--text-2);max-width:720px;margin-bottom:26px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 通用板块 ============ */
.section{padding:76px 0}
.section-alt{border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);background:linear-gradient(180deg,rgba(10,21,36,.55),rgba(5,10,18,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head .head-text{max-width:720px}
.section-head h2{margin-bottom:10px}
.section-head .sub{font-size:15px;color:var(--text-2);margin:0}

/* ============ 步骤条 ============ */
.step-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-item{
  position:relative;background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--shadow-card);transition:transform var(--ease),border-color var(--ease)
}
.step-item:hover{transform:translateY(-4px);border-color:rgba(47,216,232,.35)}
.step-num{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--primary);margin-bottom:10px}
.step-item h3{font-size:18px;margin-bottom:8px}
.step-item p{font-size:14px;margin:0}

/* ============ 图墙 ============ */
.wall-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.wall-card{
  position:relative;display:block;border-radius:var(--r-md);overflow:hidden;
  background:var(--panel);border:1px solid var(--hair);box-shadow:var(--shadow-card);
  aspect-ratio:16/9;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)
}
.wall-card:hover{transform:translateY(-4px);border-color:rgba(47,216,232,.4);box-shadow:var(--shadow-lift)}
.wall-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .28s ease}
.wall-card:hover img{transform:scale(1.04)}
.wall-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,18,.15) 0%,rgba(5,10,18,.55) 48%,rgba(5,10,18,.94) 100%)}
.wall-body{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;z-index:2}
.wall-body .badge{margin-bottom:8px}
.wall-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.45}
.wall-desc{font-size:13px;color:var(--text-2);margin:6px 0 0;line-height:1.6}

/* ============ 要点清单 ============ */
.key-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.key-card{
  position:relative;display:flex;gap:18px;align-items:flex-start;
  background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)
}
.key-card::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  opacity:0;transition:opacity var(--ease)
}
.key-card:hover{transform:translateY(-4px);border-color:rgba(47,216,232,.35);box-shadow:var(--shadow-lift)}
.key-card:hover::before{opacity:1}
.key-num{font-family:var(--font-num);font-size:18px;font-weight:700;color:var(--primary);flex:0 0 auto;padding-top:2px}
.key-card h3{font-size:17px;margin-bottom:6px}
.key-card p{font-size:14px;margin:0;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glass-line);
  border-radius:var(--r-md);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .25s ease,box-shadow .25s ease
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,216,232,.6);
  box-shadow:0 0 0 1px rgba(47,216,232,.18),0 14px 34px rgba(2,8,18,.5);
}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  display:flex;align-items:center;gap:16px;width:100%;
  padding:18px 22px;background:transparent;border:0;box-shadow:none;
  color:var(--text);font-size:16px;font-weight:600;text-align:left;line-height:1.5
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.faq-accordion .accordion-button::after{display:none}
.faq-num{font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--primary);flex:0 0 auto}
.faq-sig{position:relative;width:16px;height:16px;flex:0 0 auto;margin-left:auto}
.faq-sig::before,.faq-sig::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease
}
.faq-sig::before{left:0;top:7px;width:16px;height:2px}
.faq-sig::after{left:7px;top:0;width:2px;height:16px}
.faq-accordion .accordion-button:not(.collapsed) .faq-sig::after{transform:scaleY(0);opacity:0}
.faq-accordion .accordion-body{padding:0 22px 22px 60px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16}
.cta-band .cta-mask{position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,10,18,.9) 0%,rgba(10,21,36,.72) 100%)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:38px 40px;flex-wrap:wrap}
.cta-text{max-width:640px}
.cta-text h2{margin-bottom:10px}
.cta-text p{margin:0;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--hair);background:linear-gradient(180deg,rgba(10,21,36,.6),rgba(5,10,18,1));margin-top:88px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand b{font-size:15px;font-weight:700;color:var(--text);display:flex;flex-direction:column;line-height:1.35}
.footer-brand b span{font-size:12px;font-weight:400;color:var(--text-3)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-2)}
.footer-col ul li a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer-note{
  margin:40px 0 0;padding:18px 20px;border:1px solid var(--hair);border-radius:var(--r-md);
  background:rgba(11,20,36,.6);font-size:13px;color:var(--text-3);line-height:1.8
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:24px;padding-top:22px;border-top:1px solid var(--hair);font-size:13px;color:var(--text-3)
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:var(--text-3)}
.fb-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wall-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .nav-inner{flex-wrap:wrap;padding:12px 0;min-height:auto}
  .nav-menu{display:none}
  .nav-menu.collapse{display:none}
  .nav-cta{display:none}
  .nav-menu.show{
    display:flex;flex-direction:column;align-items:stretch;gap:10px;
    width:100%;margin:12px 0 4px;padding-top:12px;border-top:1px solid var(--hair)
  }
  .nav-menu .nav-card{height:46px;justify-content:flex-start;padding:0 16px;font-size:15px}
  .banner-inner{padding:52px 0 46px}
  .banner-inner h1{font-size:34px}
  .step-strip{grid-template-columns:1fr;gap:16px}
  .key-grid{grid-template-columns:1fr}
  .cta-inner{padding:30px 26px}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex !important}
}
@media (max-width:767px){
  h2{font-size:24px}
  .section{padding:52px 0}
  .banner-inner h1{font-size:29px}
  .banner-lead{font-size:15px}
  .brand-mark{width:42px;height:42px;font-size:13px}
  .brand-name{font-size:14px}
  .brand-sub{font-size:11px}
  .topbar-note{font-size:12px}
  .wall-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:60px;padding-top:48px}
  .btn-main,.btn-glass{min-height:48px;width:100%}
  .banner-actions,.cta-actions{width:100%}
  .faq-accordion .accordion-body{padding:0 18px 20px 18px}
}
@media (max-width:575px){
  .shell{padding:0 16px}
  .banner-inner h1{font-size:28px}
  .section-head{margin-bottom:24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg:#050A12;
  --bg-2:#0A1524;
  --panel:#0B1424;
  --panel-2:#0E1A2C;
  --primary:#2FD8E8;
  --primary-h:#63E6F2;
  --primary-a:#16B4C4;
  --primary-d:#0E7C93;
  --amber:#F2B33D;
  --ok:#37D39A;
  --danger:#FF6B6B;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#64748B;
  --line:rgba(150,215,255,.10);
  --line-2:rgba(150,215,255,.14);
  --glass:rgba(150,215,255,.055);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-card:0 1px 2px rgba(0,0,0,.4), 0 10px 28px rgba(2,8,18,.45);
  --sh-lift:0 18px 44px rgba(2,8,18,.55);
  --sh-glow:0 8px 24px rgba(47,216,232,.28);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --mono:"Inter","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --bs-primary:#2FD8E8;
  --bs-primary-rgb:47,216,232;
  --bs-body-bg:#050A12;
  --bs-body-color:#E9F2FA;
  --bs-border-color:rgba(150,215,255,.14);
  --bs-link-color:#2FD8E8;
  --bs-link-hover-color:#63E6F2;
  --bs-border-radius:10px;
  --bs-font-sans-serif:var(--sans);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(47,216,232,.10), transparent 62%),
    linear-gradient(180deg,#050A12 0%,#071021 42%,#0A1524 100%);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-h);}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--text);font-weight:700;}
p{margin:0 0 1.4em;}
ul,ol{margin:0 0 1.4em;padding-left:1.2em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media(min-width:1400px){.shell{max-width:1320px;}}

/* ---------- 顶部条 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{background:rgba(5,10,18,.9);border-bottom:1px solid var(--line);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;font-size:13px;color:var(--text-2);}
.topbar-note{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-links a{color:var(--text-2);font-size:13px;}
.topbar-links a:hover{color:var(--primary-h);}
.topbar-icon{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:1px solid var(--line-2);border-radius:6px;}

/* ---------- 导航面板 ---------- */
.nav-shell{
  background:linear-gradient(180deg,rgba(150,215,255,.07),rgba(150,215,255,.035));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), 0 10px 30px rgba(2,8,18,.45);
}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:76px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:44px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--primary),var(--primary-d));
  color:#052029;font-family:var(--mono);font-weight:700;font-size:16px;letter-spacing:.5px;
  box-shadow:var(--sh-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--text);}
.brand-sub{font-size:12.5px;color:var(--text-2);white-space:nowrap;}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line-2);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-menu{display:flex;gap:10px;align-items:center;flex:1 1 auto;}
.nav-card{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line-2);
  color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.nav-card:hover{border-color:var(--primary);color:var(--text);background:rgba(47,216,232,.10);}
.nav-card.active{border-color:var(--primary);color:var(--text);background:rgba(47,216,232,.14);}
.nav-cta{margin-left:auto;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:0;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-d) 100%);
  color:#04212A;font-weight:600;font-size:15px;
  box-shadow:var(--sh-glow);cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{color:#04212A;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(47,216,232,.36);}
.btn-main:active{transform:translateY(0);}
.btn-sub{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--primary);color:var(--primary);
  font-weight:600;font-size:15px;cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.btn-sub:hover{background:rgba(47,216,232,.12);color:var(--primary-h);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 4px;border:0;background:none;
  color:var(--text-2);font-size:14px;font-weight:600;cursor:pointer;
}
.btn-ghost svg{transition:transform .2s ease;}
.btn-ghost:hover{color:var(--primary-h);}
.btn-ghost:hover svg{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(11,20,36,.6);}
.breadcrumb-nav .shell{padding-top:12px;padding-bottom:12px;}
.breadcrumb-nav nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:nowrap;overflow:hidden;}
.breadcrumb-nav a{color:var(--text-2);}
.breadcrumb-nav a:hover{color:var(--primary-h);}
.breadcrumb-nav .sep{color:var(--text-3);}
.breadcrumb-nav .current{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52%;}

/* ---------- 主体布局 ---------- */
.page-main{padding:48px 0 72px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
@media(min-width:1200px){.layout{grid-template-columns:minmax(0,1fr) 300px;}}

.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-primary{background:rgba(47,216,232,.14);color:var(--primary);border:1px solid rgba(47,216,232,.32);}
.badge-amber{background:rgba(242,179,61,.14);color:var(--amber);border:1px solid rgba(242,179,61,.32);}
.badge-ok{background:rgba(55,211,154,.14);color:var(--ok);border:1px solid rgba(55,211,154,.32);}

.article-head{padding-bottom:40px;border-bottom:1px solid var(--line);margin-bottom:32px;}
.article-head h1{font-size:38px;letter-spacing:-.4px;margin:18px 0 16px;}
@media(max-width:767px){.article-head h1{font-size:29px;}}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-2);}
.meta-sep{width:1px;height:14px;background:var(--line-2);}
.meta-item .num{color:var(--text);}

/* ---------- 正文阅读区 ---------- */
.article-body{
  max-width:760px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:36px;box-shadow:var(--sh-card);
}
@media(max-width:767px){.article-body{padding:22px;border-radius:var(--r-md);}}
.article-body > *:first-child{margin-top:0;}
.article-body p{font-size:16px;line-height:1.8;color:#D8E5F1;}
.article-body h2{
  font-size:27px;margin:40px 0 14px;padding-top:24px;
  border-top:1px solid var(--line);position:relative;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:32px;width:4px;height:22px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-d));
}
.article-body h3{
  font-size:20px;margin:30px 0 12px;padding-left:14px;position:relative;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:6px;border-radius:3px;background:var(--amber);
}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul > li{position:relative;padding-left:22px;margin-bottom:10px;font-size:16px;line-height:1.8;color:#D8E5F1;}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:13px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.article-body ol > li{margin-bottom:10px;font-size:16px;line-height:1.8;color:#D8E5F1;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text-2);font-size:15.5px;
}
.article-body img{border-radius:var(--r-sm);margin:24px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body .table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:var(--r-md);}
.article-body table{width:100%;border-collapse:collapse;min-width:560px;background:var(--panel);}
.article-body thead th{
  background:var(--glass);color:var(--text);font-weight:600;font-size:14px;
  padding:14px 16px;text-align:left;border-bottom:1px solid var(--line-2);
}
.article-body tbody td{padding:13px 16px;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even) td{background:rgba(150,215,255,.035);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body tbody td:first-child{color:var(--primary);font-weight:600;}
.article-body hr{border:0;height:1px;background:var(--line-2);max-width:120px;margin:34px auto;}
.article-body a{border-bottom:1px solid rgba(47,216,232,.4);}
.article-body strong{color:var(--text);}

.empty-state{
  text-align:center;padding:64px 24px;color:var(--text-2);
}
.empty-state svg{color:var(--text-3);margin-bottom:16px;}
.empty-state h2{font-size:22px;margin-bottom:10px;padding:0;border:0;}
.empty-state h2::before{display:none;}
.empty-state .btn-sub{margin-top:18px;}

/* ---------- 标签与操作 ---------- */
.tag-row{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:28px;max-width:760px;}
.tag-list{display:flex;gap:10px;flex-wrap:wrap;}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--panel-2);border:1px solid var(--line-2);color:var(--text-2);font-size:12.5px;}
.tag:hover{border-color:var(--primary);color:var(--primary);}
.action-row{display:flex;gap:20px;}

/* ---------- 上/下一篇 ---------- */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px;max-width:760px;}
@media(max-width:575px){.pager{grid-template-columns:1fr;}}
.pager-card{
  display:flex;align-items:center;gap:14px;padding:20px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);color:var(--text-2);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.pager-card:hover{transform:translateY(-3px);border-color:rgba(47,216,232,.5);box-shadow:var(--sh-lift);color:var(--text);}
.pager-card .label{display:block;font-size:12px;color:var(--text-3);margin-bottom:4px;}
.pager-card .title{display:block;font-size:15px;font-weight:600;color:var(--text);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.pager-card.next{justify-content:flex-end;text-align:right;}

/* ---------- 相关推荐 ---------- */
.section{margin-top:72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:24px;}
.section-head h2{font-size:27px;}
.section-head p{font-size:14px;color:var(--text-2);margin:8px 0 0;}
.news-list{display:grid;grid-template-columns:1fr;gap:22px;}
@media(min-width:576px){.news-list{grid-template-columns:1fr 1fr;}}
@media(min-width:1200px){.news-list{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);color:var(--text);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,216,232,.5);box-shadow:var(--sh-lift);color:var(--text);}
.news-thumb{position:relative;aspect-ratio:16/9;background:var(--panel-2);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-3);margin-top:auto;}

/* ---------- 侧栏 ---------- */
.side-col{display:none;}
@media(min-width:1200px){
  .side-col{display:block;}
  .side-sticky{position:sticky;top:120px;display:flex;flex-direction:column;gap:22px;}
}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-card);}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.toc-link{display:block;font-size:13.5px;color:var(--text-2);padding:8px 10px;border-radius:8px;border-left:2px solid transparent;line-height:1.5;}
.toc-link:hover{background:rgba(47,216,232,.08);color:var(--text);}
.toc-link.is-sub{padding-left:22px;font-size:13px;color:var(--text-3);}
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), var(--sh-card);
}
.mini-login p{font-size:13.5px;color:var(--text-2);margin:0 0 16px;}
.field{position:relative;margin-bottom:12px;}
.field svg.prefix{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-3);}
.form-control{
  height:44px;background:#070E1B;border:1px solid var(--line-2);border-radius:var(--r-sm);
  color:var(--text);font-size:14.5px;padding:0 14px 0 38px;width:100%;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{background:#070E1B;color:var(--text);border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,232,.14);outline:none;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;}
.accordion-item{
  background:var(--glass);border:1px solid var(--line-2);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(47,216,232,.45);box-shadow:0 0 0 1px rgba(47,216,232,.18), 0 10px 26px rgba(2,8,18,.45);}
.accordion-button{
  display:flex;align-items:center;gap:14px;width:100%;
  background:transparent;border:0;padding:18px 20px;
  color:var(--text);font-size:15.5px;font-weight:600;text-align:left;
  box-shadow:none;
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px;}
.accordion-button::after{display:none;}
.faq-index{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--primary);font-size:13px;flex-shrink:0;}
.faq-sign{margin-left:auto;position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-sign::before{left:0;top:7px;width:16px;height:2px;}
.faq-sign::after{left:7px;top:0;width:2px;height:16px;transition:transform .25s ease,opacity .25s ease;}
.accordion-button:not(.collapsed) .faq-sign::after{transform:scaleY(0);opacity:0;}
.accordion-body{padding:0 20px 20px 48px;font-size:15px;line-height:1.8;color:var(--text-2);}
.accordion-collapse{transition:height .25s ease;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:80px;
  border-radius:var(--r-lg);padding:44px;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), var(--sh-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.16;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  z-index:0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(90deg,rgba(5,10,18,.94) 0%,rgba(5,10,18,.72) 55%,rgba(5,10,18,.55) 100%);
}
.cta-inner{position:relative;z-index:1;display:grid;gap:28px;grid-template-columns:1fr;}
@media(min-width:992px){.cta-inner{grid-template-columns:1.15fr 1fr;align-items:center;gap:44px;}}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form .form-control{flex:1 1 220px;padding-left:14px;}
.cta-form .btn-main{flex:0 0 auto;}
@media(max-width:575px){.cta-form .form-control,.cta-form .btn-main{flex:1 1 100%;width:100%;}}
.form-hint{font-size:12px;color:var(--text-3);margin:12px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:#070E1B;margin-top:96px;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand b{font-size:16px;font-weight:700;display:flex;flex-direction:column;line-height:1.35;}
.footer-brand b span{font-size:12.5px;color:var(--text-2);font-weight:400;}
.footer-col p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin:0;}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--text);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:13.5px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary-h);text-decoration:underline;text-underline-offset:4px;}
.footer-note{font-size:12.5px;color:var(--text-3);line-height:1.7;margin:36px 0 0;padding-top:22px;border-top:1px solid var(--line);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:22px;font-size:12.5px;color:var(--text-3);}
.fb-links{display:flex;gap:18px;}
.fb-links a{color:var(--text-3);}
.fb-links a:hover{color:var(--primary-h);}

/* ---------- 响应式导航 ---------- */
@media(max-width:767px){
  .nav-toggle{display:inline-flex;}
  .nav-menu{flex-basis:100%;flex-direction:column;align-items:stretch;padding:14px 0 4px;gap:10px;}
  .nav-menu.collapse:not(.show){display:none;}
  .nav-card{width:100%;justify-content:flex-start;}
  .nav-cta{width:100%;margin-left:0;}
  .topbar-note{display:none;}
  .page-main{padding:32px 0 48px;}
}
@media(min-width:768px){
  .nav-toggle{display:none;}
  .nav-menu{display:flex !important;}
}

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

/* roulang page: category2 */
:root{
  --bg:#050A12;
  --bg-soft:#0A1524;
  --panel:#0B1424;
  --panel-2:#0E1A2C;
  --primary:#2FD8E8;
  --primary-hover:#63E6F2;
  --primary-active:#16B4C4;
  --primary-deep:#0E7C93;
  --amber:#F2B33D;
  --success:#37D39A;
  --danger:#FF6B6B;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#64748B;
  --hair:rgba(150,215,255,.10);
  --hair-strong:rgba(150,215,255,.14);
  --glass:rgba(150,215,255,.055);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(2,8,18,.45);
  --shadow-lift:0 18px 44px rgba(2,8,18,.55);
  --glow:0 8px 24px rgba(47,216,232,.28);
  --mono:"Inter","Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --bs-primary:#2FD8E8;
  --bs-primary-rgb:47,216,232;
  --bs-body-bg:#050A12;
  --bs-body-color:#E9F2FA;
  --bs-border-color:rgba(150,215,255,.14);
  --bs-link-color:#2FD8E8;
  --bs-link-hover-color:#63E6F2;
  --bs-border-radius:12px;
  --bs-border-radius-sm:10px;
  --bs-border-radius-lg:16px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.78;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,216,232,.28)}
.num,.idx,time,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.shell{max-width:1320px}}
@media(max-width:520px){.shell{padding:0 16px}}

/* ============ 顶部条 + 卡片化导航面板 ============ */
.site-header{position:sticky;top:0;z-index:80}
.topbar{background:#040810;border-bottom:1px solid var(--hair)}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--text-2)}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.topbar-links a{color:var(--text-2);transition:color .2s ease}
.topbar-links a:hover{color:var(--primary)}
.topbar-icon{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:6px;border:1px solid var(--hair)}

.nav-shell{
  background:rgba(11,20,36,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hair);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.nav-inner{min-height:78px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#03151B;font-size:13px;font-weight:700;letter-spacing:.08em;
  box-shadow:var(--glow);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:700;color:var(--text)}
.brand-sub{font-size:12px;color:var(--text-3);white-space:nowrap}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  background:var(--glass);border:1px solid var(--hair);color:var(--text-2);
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:rgba(47,216,232,.5);color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-card{
  display:inline-flex;align-items:center;height:44px;padding:0 14px;
  border-radius:10px;background:var(--glass);border:1px solid var(--hair);
  color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.nav-card:hover{color:var(--text);border-color:rgba(47,216,232,.55);background:rgba(47,216,232,.10)}
.nav-card.active{
  color:var(--primary);border-color:rgba(47,216,232,.55);
  background:rgba(47,216,232,.12);box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.nav-cta{flex:0 0 auto}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:10px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;color:#03151B;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 14px 32px rgba(47,216,232,.36);color:#03151B}
.btn-main:active{transform:translateY(0);background:linear-gradient(135deg,var(--primary-active),var(--primary-deep))}
.btn-second{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:10px;
  background:var(--glass);border:1px solid rgba(47,216,232,.5);
  color:var(--primary);font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-second:hover{background:rgba(47,216,232,.12);transform:translateY(-2px);color:var(--primary-hover)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;padding:0;min-height:44px;
  color:var(--text-2);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;transition:color .2s ease;
}
.btn-ghost svg{transition:transform .2s ease}
.btn-ghost:hover{color:var(--primary)}
.btn-ghost:hover svg{transform:translateX(4px)}
:where(a,button){transition-duration:.2s;transition-timing-function:ease}

/* ============ 页头 ============ */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bg),var(--bg-soft));
  border-bottom:1px solid var(--hair);
  padding:44px 0 52px;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.72),rgba(5,10,18,.96) 70%);
}
.page-head .shell{position:relative;z-index:1}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:20px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .cur{color:var(--text-3)}

.page-head h1{font-size:clamp(28px,3.6vw,42px);margin-bottom:16px}
.page-head .lede{max-width:820px;color:var(--text-2);font-size:16px;line-height:1.8}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(47,216,232,.10);border:1px solid rgba(47,216,232,.28);color:var(--primary);
}
.tag.amber{background:rgba(242,179,61,.10);border-color:rgba(242,179,61,.30);color:var(--amber)}
.tag.plain{background:var(--panel-2);border-color:var(--hair);color:var(--text-2)}

/* ============ 分栏布局 ============ */
.layout{display:grid;grid-template-columns:1fr;gap:28px;padding:48px 0 72px}
@media(min-width:992px){
  .layout{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:32px;padding:56px 0 88px}
}
.side{display:flex;flex-direction:column;gap:18px}
@media(min-width:992px){
  .side{position:sticky;top:132px;align-self:start}
}

.card-solid{
  background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-lg);
  box-shadow:var(--shadow);
}
.anchor-card{padding:18px}
.anchor-card .card-title{
  display:flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--text-2);letter-spacing:.06em;margin-bottom:14px;
}
.anchor-list{list-style:none;display:flex;flex-direction:column;gap:8px}
.anchor-link{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:10px;background:var(--panel-2);border:1px solid transparent;
  color:var(--text-2);font-size:14px;font-weight:600;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.anchor-link .idx{font-size:12px;color:var(--text-3)}
.anchor-link:hover{color:var(--text);border-color:rgba(47,216,232,.4)}
.anchor-link.active{
  color:var(--primary);border-color:rgba(47,216,232,.5);background:rgba(47,216,232,.10);
}
.anchor-link.active .idx{color:var(--primary)}

.glass{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  border-radius:var(--r-lg);
}
.login-card{padding:20px}
.login-card h2{font-size:17px;margin-bottom:8px}
.login-card p{font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:14px}
.login-card .btn-second{width:100%}
.side-note{padding:18px;display:flex;gap:12px;align-items:flex-start}
.side-note svg{color:var(--amber);flex:0 0 auto;margin-top:4px}
.side-note p{font-size:13px;color:var(--text-2);margin:0;line-height:1.75}
.side-note b{display:block;color:var(--text);font-size:14px;margin-bottom:6px}

/* ============ 右侧内容流 ============ */
.stream{display:flex;flex-direction:column;gap:28px;min-width:0}
.block{
  background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:24px;
  scroll-margin-top:140px;
}
@media(min-width:1200px){.block{padding:28px}}
.block h2{font-size:24px;margin-bottom:14px;display:flex;align-items:flex-start;gap:10px}
.block h2::before{
  content:"";width:4px;height:20px;border-radius:2px;background:var(--primary);
  margin-top:5px;flex:0 0 auto;
}
.block p{color:var(--text-2)}
@media(max-width:520px){
  .block{padding:18px}
  .block h2{font-size:20px}
}

.media-block{display:grid;grid-template-columns:1fr;gap:20px;margin-top:6px}
@media(min-width:768px){
  .media-block{grid-template-columns:5fr 7fr;align-items:center;gap:24px}
  .media-block.reverse .media-figure{order:2}
  .media-block.reverse .media-text{order:1}
}
.media-figure{margin:0}
.media-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-md);background:var(--panel-2);
  border:1px solid var(--hair);
}
.media-figure figcaption{font-size:13px;color:var(--text-3);margin-top:8px}
.media-text p{font-size:15.5px}

.plain-list{list-style:none;display:flex;flex-direction:column;gap:12px;margin-top:4px}
.plain-list li{display:flex;gap:10px;color:var(--text-2);font-size:15px}
.plain-list li .dot{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;margin-top:9px;
  background:var(--primary);box-shadow:0 0 0 3px rgba(47,216,232,.14);
}
.plain-list li b{color:var(--text);font-weight:600}

/* 时间轴 */
.timeline{position:relative;list-style:none;margin:8px 0 0;padding:0 0 0 26px}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(47,216,232,.6),rgba(47,216,232,.08));
}
.timeline li{position:relative;padding-bottom:22px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-26px;top:7px;width:13px;height:13px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(47,216,232,.12);
}
.timeline .stage{
  display:inline-block;font-family:var(--mono);font-size:12px;font-weight:700;
  letter-spacing:.08em;color:var(--amber);
}
.timeline h3{font-size:18px;margin:6px 0 6px}
.timeline p{margin:0;font-size:15px;color:var(--text-2)}

/* 检查清单 */
.check-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:6px}
@media(min-width:768px){.check-grid{grid-template-columns:1fr 1fr}}
.check-item{
  display:flex;gap:12px;background:var(--panel-2);
  border:1px solid var(--hair);border-radius:var(--r-md);padding:16px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.check-item:hover{border-color:rgba(47,216,232,.42);transform:translateY(-2px);box-shadow:var(--shadow-lift)}
.check-item .num{
  font-size:14px;font-weight:700;color:var(--primary);
  line-height:1.5;flex:0 0 auto;
}
.check-item h3{font-size:16px;margin-bottom:4px}
.check-item p{margin:0;font-size:14px;color:var(--text-2)}

/* FAQ 手风琴 */
.faq-wrap{margin-top:6px}
.accordion-item{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair-strong)!important;
  border-radius:var(--r-md)!important;
  overflow:hidden;margin-bottom:12px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,216,232,.55)!important;
  box-shadow:0 0 0 1px rgba(47,216,232,.18),0 10px 30px rgba(2,8,18,.5);
}
.accordion-header{margin:0}
.accordion-button{
  display:flex;align-items:center;gap:12px;width:100%;
  background:transparent!important;color:var(--text)!important;
  font-size:16px;font-weight:600;padding:16px 18px;
  box-shadow:none!important;border-radius:0!important;
}
.accordion-button::after{display:none!important}
.accordion-button:not(.collapsed){color:var(--primary)!important}
.accordion-button .faq-idx{font-family:var(--mono);font-size:13px;color:var(--primary);flex:0 0 auto}
.accordion-button .pm{position:relative;width:20px;height:20px;margin-left:auto;flex:0 0 auto}
.accordion-button .pm::before,
.accordion-button .pm::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);transition:transform .25s ease,background .25s ease;
}
.accordion-button .pm::before{width:14px;height:1.5px;border-radius:2px}
.accordion-button .pm::after{width:1.5px;height:14px;border-radius:2px}
.accordion-button:not(.collapsed) .pm::after{transform:translate(-50%,-50%) scaleY(0)}
.accordion-button:not(.collapsed) .pm::before{background:var(--primary)}
.accordion-body{padding:0 18px 18px 46px;font-size:15px;line-height:1.8;color:var(--text-2)}
@media(max-width:520px){.accordion-body{padding-left:18px}}

/* CTA */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:28px;margin-top:4px;
  display:grid;grid-template-columns:1fr;gap:20px;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.16;
}
.cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,10,18,.88),rgba(5,10,18,.96));
}
.cta>*{position:relative;z-index:1}
@media(min-width:768px){
  .cta{grid-template-columns:1.25fr .75fr;align-items:center;padding:32px}
}
.cta h2{font-size:22px;margin-bottom:10px}
.cta p{font-size:14.5px;color:var(--text-2);margin:0}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media(max-width:767px){.cta-actions .btn-main,.cta-actions .btn-second{width:100%}}

/* ============ 页脚 ============ */
.site-footer{background:#040810;border-top:1px solid var(--hair);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand b{display:flex;flex-direction:column;font-size:15px;font-weight:700;line-height:1.4}
.footer-brand b span{font-size:12px;font-weight:400;color:var(--text-3)}
.footer-col h4{font-size:14px;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-note{
  border-top:1px solid var(--hair);margin:34px 0 0;padding-top:20px;
  font-size:13px;color:var(--text-3);line-height:1.8;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--hair);margin-top:20px;padding-top:18px;
  font-size:13px;color:var(--text-3);
}
.fb-links{display:flex;flex-wrap:wrap;gap:16px}
.fb-links a{color:var(--text-3)}
.fb-links a:hover{color:var(--primary)}

/* ============ 响应式导航 ============ */
@media(min-width:992px){
  .nav-menu.collapse{display:flex}
}
@media(max-width:991px){
  .nav-inner{padding-top:12px;padding-bottom:12px}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-menu.collapse.show{
    display:flex;flex-direction:column;gap:10px;
    flex-basis:100%;width:100%;padding-top:6px;
  }
  .nav-menu .nav-card{width:100%;height:48px;justify-content:flex-start}
  .nav-cta{flex-basis:100%;width:100%}
  .side{position:static}
}
@media(max-width:520px){
  .btn-main,.btn-second{min-height:48px}
  .topbar-note{font-size:12px}
  .brand-sub{font-size:11px}
}

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

/* roulang page: category3 */
:root{
  --bs-primary:#2FD8E8;
  --bs-primary-rgb:47,216,232;
  --bs-body-bg:#050A12;
  --bs-body-color:#E9F2FA;
  --bs-border-color:rgba(150,215,255,.14);
  --bs-border-radius:12px;
  --bs-link-color:#2FD8E8;
  --bs-link-hover-color:#63E6F2;
  --bs-emphasis-color:#E9F2FA;
  --bs-secondary-color:#93A6BC;

  --bg:#050A12;
  --bg-soft:#0A1524;
  --panel:#0B1424;
  --panel-2:#0E1A2C;
  --primary:#2FD8E8;
  --primary-hover:#63E6F2;
  --primary-active:#16B4C4;
  --primary-deep:#0E7C93;
  --amber:#F2B33D;
  --ok:#37D39A;
  --warn:#FF6B6B;
  --text:#E9F2FA;
  --text-2:#93A6BC;
  --text-3:#64748B;
  --hair:rgba(150,215,255,.10);
  --hair-strong:rgba(150,215,255,.18);
  --glass-bg:rgba(150,215,255,.055);
  --glass-border:rgba(150,215,255,.14);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(0,0,0,.4), 0 10px 28px rgba(2,8,18,.45);
  --sh-lift:0 18px 44px rgba(2,8,18,.55);
  --sh-glow:0 8px 24px rgba(47,216,232,.28);
  --max:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  background-image:linear-gradient(180deg,#050A12 0%,#0A1524 100%);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary-hover);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:700;color:var(--text);}
h2{font-size:30px;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 1.4em;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- layout ---------- */
.shell{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 20px;
}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{margin:10px 0 0;color:var(--text-2);font-size:15px;max-width:640px;}
.section-head .head-side{flex:0 0 auto;}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:0 24px;
  border:0;
  border-radius:var(--r-sm);
  background:linear-gradient(135deg,#2FD8E8 0%,#0E7C93 100%);
  color:#EAFBFF;
  font-weight:600;
  font-size:15px;
  letter-spacing:.02em;
  box-shadow:var(--sh-glow);
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{color:#EAFBFF;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 12px 30px rgba(47,216,232,.36);}
.btn-main:active{transform:translateY(0);filter:brightness(.95);}
.btn-main[disabled],.btn-main.is-disabled{opacity:.4;box-shadow:none;pointer-events:none;}

.btn-sub{
  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 rgba(47,216,232,.45);
  background:var(--glass-bg);
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-sub:hover{background:rgba(47,216,232,.12);border-color:var(--primary);color:var(--primary-hover);transform:translateY(-2px);}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 2px;
  border:0;
  border-bottom:1px solid rgba(47,216,232,.35);
  background:none;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  cursor:pointer;
}
.btn-ghost svg{transition:transform .2s ease;}
.btn-ghost:hover{color:var(--primary-hover);border-bottom-color:var(--primary);}
.btn-ghost:hover svg{transform:translateX(4px);}

/* ---------- badges ---------- */
.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
}
.badge-primary{background:rgba(47,216,232,.14);color:var(--primary);border-color:rgba(47,216,232,.3);}
.badge-amber{background:rgba(242,179,61,.14);color:var(--amber);border-color:rgba(242,179,61,.32);}
.badge-ok{background:rgba(55,211,154,.14);color:var(--ok);border-color:rgba(55,211,154,.3);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,10,18,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(2,8,18,.55);}
.topbar{border-bottom:1px solid var(--hair);background:rgba(11,20,36,.7);}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
}
.topbar-note{font-size:13px;color:var(--text-2);}
.topbar-links{display:flex;align-items:center;gap:18px;font-size:13px;}
.topbar-links a{color:var(--text-2);}
.topbar-links a:hover{color:var(--primary);}
.topbar-icon{
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--hair-strong);
  border-radius:8px;
  color:var(--text-2);
}
.topbar-icon:hover{color:var(--primary);border-color:rgba(47,216,232,.45);}

.nav-shell{
  background:var(--glass-bg);
  border-bottom:1px solid var(--glass-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(47,216,232,.22),rgba(14,124,147,.3));
  border:1px solid rgba(47,216,232,.32);
  color:var(--primary);
  font-family:var(--font-num);
  font-weight:700;
  font-size:15px;
  letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:700;color:var(--text);}
.brand-sub{font-size:12px;color:var(--text-2);white-space:nowrap;}

.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--hair-strong);
  background:var(--glass-bg);
  color:var(--text-2);
  cursor:pointer;
}
.nav-toggle:hover{color:var(--primary);border-color:rgba(47,216,232,.45);}

.nav-menu{gap:10px;}
.nav-card{
  display:flex;
  align-items:center;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--hair);
  background:var(--glass-bg);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.nav-card:hover{color:var(--primary);border-color:rgba(47,216,232,.45);background:rgba(47,216,232,.08);transform:translateY(-2px);}
.nav-card.active{color:var(--primary);border-color:rgba(47,216,232,.55);background:rgba(47,216,232,.1);}
.nav-cta{margin-left:auto;white-space:nowrap;}

/* ---------- breadcrumb ---------- */
.breadcrumb-nav{
  border-bottom:1px solid var(--hair);
  background:rgba(11,20,36,.55);
}
.breadcrumb-nav .shell{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:46px;
  font-size:13px;
  color:var(--text-3);
  overflow:hidden;
}
.breadcrumb-nav a{color:var(--text-2);}
.breadcrumb-nav a:hover{color:var(--primary);}
.breadcrumb-nav .crumb-sep{color:var(--text-3);}
.breadcrumb-nav .crumb-current{
  color:var(--text-3);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--hair);
  background:linear-gradient(180deg,#050A12 0%,#0A1524 100%);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.2;
}
.page-hero-tex{
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(150,215,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(150,215,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 70%);
  mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 70%);
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(900px 420px at 15% 100%,rgba(47,216,232,.16),transparent 62%),
             linear-gradient(180deg,rgba(5,10,18,.35),rgba(5,10,18,.9));
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:310px;
  padding:72px 0 48px;
}
.page-hero h1{
  font-size:42px;
  margin:14px 0 16px;
  max-width:820px;
}
.page-hero p{
  max-width:760px;
  margin:0;
  color:var(--text-2);
  font-size:16px;
  line-height:1.8;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ---------- table ---------- */
.table-panel{
  background:var(--panel);
  border:1px solid var(--hair);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.rule-table{
  width:100%;
  min-width:720px;
  border-collapse:separate;
  border-spacing:0;
  margin:0;
  color:var(--text-2);
}
.rule-table caption{
  caption-side:top;
  padding:16px 22px;
  text-align:left;
  color:var(--text-3);
  font-size:13px;
  border-bottom:1px solid var(--hair);
}
.rule-table thead th{
  padding:14px 22px;
  background:rgba(150,215,255,.06);
  border-bottom:1px solid var(--glass-border);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  white-space:nowrap;
}
.rule-table tbody td{
  padding:18px 22px;
  border-bottom:1px solid var(--hair);
  vertical-align:top;
  font-size:15px;
  line-height:1.75;
}
.rule-table tbody tr:last-child td{border-bottom:0;}
.rule-table tbody tr:nth-child(even) td{background:rgba(150,215,255,.025);}
.rule-table tbody td:first-child{
  color:var(--primary);
  font-weight:600;
  white-space:nowrap;
}
.rule-table td .val{
  display:inline-block;
  padding:3px 12px;
  border-radius:var(--r-pill);
  background:rgba(242,179,61,.12);
  border:1px solid rgba(242,179,61,.3);
  color:var(--amber);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
}

/* ---------- split (text + image) ---------- */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
.split-text .eyebrow{
  display:inline-block;
  margin-bottom:12px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--amber);
  font-weight:600;
}
.split-text h2{font-size:30px;margin-bottom:14px;}
.split-text p{color:var(--text-2);max-width:620px;}
.check-list{display:grid;gap:12px;margin-top:6px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  color:var(--text-2);
  font-size:15px;
}
.check-list li svg{flex:0 0 auto;margin-top:4px;color:var(--primary);}
.split-media img{
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  border-radius:var(--r-md);
  border:1px solid var(--hair);
  background:var(--panel);
  box-shadow:var(--sh-card);
}

/* ---------- strip cards ---------- */
.strip-list{display:grid;gap:20px;}
.strip-card{
  display:flex;
  align-items:center;
  gap:22px;
  padding:24px 26px;
  background:var(--panel);
  border:1px solid var(--hair);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.strip-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,216,232,.35);
  box-shadow:var(--sh-lift);
}
.strip-icon{
  flex:0 0 54px;
  width:54px;height:54px;
  display:grid;
  place-items:center;
  border-radius:14px;
  border:1px solid rgba(47,216,232,.28);
  background:linear-gradient(135deg,rgba(47,216,232,.22),rgba(14,124,147,.24));
  color:var(--primary);
}
.strip-icon.is-amber{
  border-color:rgba(242,179,61,.32);
  background:linear-gradient(135deg,rgba(242,179,61,.22),rgba(150,100,20,.22));
  color:var(--amber);
}
.strip-body{flex:1 1 auto;min-width:0;}
.strip-body h3{font-size:20px;margin-bottom:8px;}
.strip-body p{margin:0;color:var(--text-2);font-size:15px;}
.strip-side{flex:0 0 auto;}
.strip-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:10px;
}

/* ---------- faq ---------- */
.faq-wrap .accordion-item{
  background:var(--glass-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);
  border-radius:var(--r-md);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-wrap .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,216,232,.55);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 0 0 1px rgba(47,216,232,.18),0 14px 34px rgba(2,8,18,.5);
}
.faq-wrap .accordion-header{margin:0;}
.faq-wrap .accordion-button{
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  box-shadow:none;
  text-align:left;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none;}
.faq-wrap .accordion-button:focus{box-shadow:none;border:0;}
.faq-wrap .accordion-button::after{
  content:"+";
  margin-left:auto;
  width:auto;height:auto;
  background-image:none;
  font-family:var(--font-num);
  font-size:20px;
  line-height:1;
  color:var(--text-2);
  transition:transform .25s ease,color .25s ease;
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  content:"−";
  color:var(--primary);
  transform:rotate(180deg);
}
.faq-num{
  flex:0 0 auto;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  opacity:.9;
}
.faq-wrap .accordion-body{
  padding:0 22px 22px 60px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.faq-wrap .accordion-body p:last-child{margin-bottom:0;}

/* ---------- cta ---------- */
.cta-band{padding:0 0 96px;}
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--glass-border);
  background:var(--glass-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-lift);
}
.cta-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-panel::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(5,10,18,.94),rgba(10,21,36,.78));
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  gap:28px;
  padding:44px 40px;
}
.cta-title{font-size:30px;font-weight:700;line-height:1.25;margin:0 0 12px;}
.cta-panel p{margin:0;color:var(--text-2);font-size:15px;max-width:520px;}
.cta-form{display:flex;gap:12px;align-items:stretch;}
.cta-form .form-control{
  min-height:48px;
  border-radius:var(--r-sm);
  background:rgba(11,20,36,.85);
  border:1px solid var(--hair-strong);
  color:var(--text);
  padding:0 16px;
  font-size:15px;
}
.cta-form .form-control::placeholder{color:var(--text-3);}
.cta-form .form-control:focus{
  background:rgba(11,20,36,.95);
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,216,232,.14);
  color:var(--text);
}
.form-note{margin-top:12px;font-size:12px;color:var(--text-3);}
.anchor-offset{display:block;position:relative;top:-110px;visibility:hidden;}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--hair);
  background:linear-gradient(180deg,#050A12 0%,#0A1524 100%);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding-bottom:34px;
  border-bottom:1px solid var(--hair);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand b{display:flex;flex-direction:column;font-size:16px;line-height:1.35;}
.footer-brand b span{
  font-size:12px;
  font-weight:400;
  color:var(--text-2);
  white-space:nowrap;
}
.footer-col p{color:var(--text-2);font-size:14px;line-height:1.85;margin:0;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{
  color:var(--text-2);
  font-size:14px;
  text-underline-offset:4px;
}
.footer-col ul a:hover{color:var(--primary);text-decoration:underline;}
.footer-note{
  margin:24px 0 0;
  color:var(--text-3);
  font-size:13px;
  line-height:1.8;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  justify-content:space-between;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--hair);
  color:var(--text-3);
  font-size:13px;
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:var(--text-3);text-underline-offset:4px;}
.fb-links a:hover{color:var(--primary);text-decoration:underline;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:36px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .cta-inner{padding:36px 28px;}
}
@media (max-width:767.98px){
  body{line-height:1.8;}
  .shell{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:26px;}
  .section-head h2,.split-text h2{font-size:24px;}
  .page-hero-inner{min-height:auto;padding:52px 0 40px;}
  .page-hero h1{font-size:29px;}
  .topbar-note{font-size:12px;line-height:1.5;padding:8px 0;}
  .topbar-inner{min-height:auto;padding:6px 0;}
  .nav-inner{min-height:68px;gap:12px;}
  .brand-mark{width:42px;height:42px;font-size:14px;}
  .nav-menu{
    width:100%;
    padding:14px 0 4px;
    gap:10px;
  }
  .nav-menu.show,
  .nav-menu.collapsing{
    display:flex;
    flex-direction:column;
  }
  .nav-card{width:100%;height:48px;justify-content:flex-start;}
  .nav-cta{margin-left:0;width:100%;order:5;}
  .nav-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;}
  .strip-card{flex-direction:column;align-items:flex-start;gap:16px;padding:20px;}
  .strip-side{width:100%;}
  .cta-form{flex-direction:column;}
  .cta-form .btn-main{width:100%;min-height:48px;}
  .rule-table thead th,.rule-table tbody td{padding-left:16px;padding-right:16px;}
  .faq-wrap .accordion-body{padding-left:22px;}
  .footer-grid{gap:28px;padding-bottom:26px;}
}
@media (max-width:575.98px){
  .page-hero h1{font-size:26px;}
  .cta-title{font-size:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (min-width:768px){
  .nav-toggle{display:none;}
  .nav-menu{
    display:flex !important;
    flex:1 1 auto;
    align-items:center;
    justify-content:center;
  }
}
@media (min-width:992px){
  .split{grid-template-columns:1.05fr .95fr;gap:44px;}
  .cta-inner{grid-template-columns:1.1fr .9fr;align-items:center;padding:48px 44px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;}
}
@media (min-width:1200px){
  .page-hero-inner{padding:88px 0 56px;}
}
@media (min-width:1400px){
  .shell{max-width:1320px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .strip-card:hover,.btn-main:hover,.btn-sub:hover,.nav-card:hover{transform:none;}
}